Internal Use Only Website http://biz.lgservice.com SERVICE MANUAL MODEL: MCT806 (MCT806, MCS1306F/W)
Mini Hi-Fi System SERVICE MANUAL MODEL: MCT806
(MCT806, MCS1306F/W)
CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL.
P/NO : AFN75496351
JUNE, 2011
CONTENTS SECTION SECTION SECTION SECTION
1 ........ GENERAL 2 ........ CABINET & MAIN CHASSIS 3 ........ ELECTRICAL 4 ........ REPLACEMENT PARTS LIST
1-1
SECTION 1 SUMMARY CONTENTS
SERVICING PRECAUTIONS ................................................................................................................... 1-3 ESD PRECAUTIONS .................................................................................................................................. 1-5 SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-6 PROGRAM DOWNLOAD GUIDE ........................................................................................................... 1-7 SPECIFICATIONS ..................................................................................................................................... 1-10
1-2
SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact.
Storage in conductive bag
Drop impact
2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may damage the eyes! Absolutely never permit laser beams to enter the eyes! Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged. NEVER look directly at the laser beam, and don’t allow contact with fingers or other exposed skin.
5) Cleaning the lens surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort lens. Pressure Magnet
Pressure
How to hold the pick-up Cotton swab
Conductive Sheet 6) Never attempt to disassemble the pick-up. Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
1-3
NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care. 2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnetism is present, or where there is excessive dust.
2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire from the unit 2) All equipment, measuring instruments and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.) 4) To prevent AC leakage, the metal part of the soldering iron should be grounded. 5) Workers should be grounded by an armband (1 M立) 6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent static electricity changes in the clothing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Armband
Resistor (1 M立)
Resistor (1 M立) Conductive Sheet
1-4
ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.
1-5
SERVICE INFORMATION FOR EEPROM POWER ON
FLD no disc status
Remote control ‘ ’ + Front ‘STOP’ push same timing during 5s
FLD ‘OP-0….
Move to appropriate position and make changes with remote control. ( , , /■ , REPEAT )
DETECT NEW EEPROM (OPTION EDIT SCREEN) NAME
HEX
OP0 OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP8 OP9
05 00 00 00 00 69 90 07 B0 09
Press STOP key
FLD ‘write ok’
Remote control ‘ ’ + Front ‘STOP’ push same timing
FLD ‘E2P CLR’
Completed
1-6
PROGRAM DOWNLOAD GUIDE 1. AUDIO PROGRAM Download program file name must be MCT806_YYMMDDX.HEX If security program (Water Wall) is activated on your PC, you must save the file to the usb storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the usb device, change to the other function, nor power off the device. Usb device must be unplugged when the downloading process is completed.
ON VFD DISPLAY SCREEN NO USB
↓
← Insert usb device at usb function
READ
↓ FIRMWARE
↓ WRITE 00 .. 100
↓ UPDATED
↓ POWER OFF AUTOMATICALLY
← When completed, remove usb device.
1-7
2. CD PROGRAM Download program file name must be HD003_DATE_00.BIN If security program (Water Wall) is activated on your PC, you must save the file to the usb storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the usb device, change to the other function, nor power off the device. Usb device must be unplugged when the downloading process is completed.
ON VFD DISPLAY SCREEN NO USB
↓
← Insert usb device at usb function
READ
↓ FIRMWARE
↓ FINISH
↓ UPDATED
↓ POWER OFF AUTOMATICALLY
← When completed, remove usb device.
1-8
3. BEAT BOX PROGRAM Download program file name must be BEAT_BIN_DATE_00.BIN If security program (Water Wall) is activated on your PC, you must save the file to the usb storage device and disable the security software, then download the file to your set. Caution: When downloading the file, you should neither unplug the usb device, change to the other function, nor power off the device. Usb device must be unplugged when the downloading process is completed.
ON VFD DISPLAY SCREEN NO USB
↓
← Insert usb device at usb function
READ
↓ FIRMWARE
↓ FINISH
↓ UPDATED
↓ POWER OFF AUTOMATICALLY
← When completed, remove usb device.
1-9
SPECIFICATIONS • GENERAL Power requirements Power consumption Dimensions (W x H x D) Net Weight (Approx.) Operating temperature Operating humidity Bus Power Supply
Refer to main label Refer to main label 285 x 390 x 380 mm without foot 7 kg 5 °C to 35 °C (41 °F to 95 °F) 5 % to 90 % USB DC 5 V 500 mA iPod DC 5 V 1A
• INPUTS/ OUTPUTS ANALOG AUDIO IN PORT. IN ANALOG AUDIO OUT
1.2 Vrms (1 kHz), 600 Ω, RCA jack (L, R) x 1 0.5 Vrms (3.5 mm stereo jack) 800 mVrms (1 kHz), 600 Ω, RCA jack (L, R) x 1
• TUNER FM Tuning Range AM Tuning Range
87.5 to 108.0 MHz or 87.50 to 108.00 MHz 522 to 1 620 kHz, 520 to 1 710 kHz or 522 to 1 710 kHz
• AMPLIFI ER Stereo mode Surround mode
270 W + 270 W (4 Ω at 1 kHz) Front 270 W + 270 W (4 Ω at 1 kHz, THD 10 %) Subwoofer 270 W (4 Ω at 60 Hz, THD 10 %)
• CD Frequency Response Signal-to-noise ratio Dynamic range
40 to 20 000 Hz 75 dB 80 dB
• SPEAKERS Front speaker Type Impedance Rated Input Power Max. Input power Net Dimensions (W x H x D) Net Weight
2 Way 2 speaker 4Ω 270 W 540 W 263 x 465 x 360 mm 7.9 kg
Passive subwoofer Type Impedance Rated Input Power Max. Input power Net Dimensions (W x H x D) Net Weight
1 Way 1 speaker 4Ω 270 W 540 W 350 x 456 x 357 mm 9.4 kg
• Design and specifications are subject to change without notice.
1-10
SECTION 2 CABINET & MAIN CHASSIS CONTENTS
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803) ........................ 2-2 1. ORDER OF DISASSEMBLY FOR MECHANISM DECK .......................................................................... 2-2 2. ORDER OF ASSEMBLY FOR MECHANISM DECK ................................................................................ 2-6
EXPLODED VIEWS................................................................................................................................... 2-11 1. 2. 3. 4.
CABINET AND MAIN FRAME SECTION (MCT806) .............................................................................. 2-11 MECHANISM DECK SECTION (CDM-H1803)....................................................................................... 2-13 PACKING ACCESSORY SECTION ....................................................................................................... 2-15 SPEAKER SECTION .............................................................................................................................. 2-16
2-1
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803)
1. ORDER OF DISASSEMBLY FOR MECHANISM DECK
1) Disassemble the Cover Guide Disc.
Figure 1
2) Disassemble the Loading FFC from the Main PCB Assy. Turn the Gear in OPEN direction as shown in Figure 2 to take out the Tray Loading Assy in 3 direction.
2
1
3
Figure 2
1
3) Pull up the Holder 1 to completely disassemble the Tray Loading Assy from the Base Main Assy.
2
Figure 3 2-2
ORDER OF DISASSEMBLY FOR MECHANISM DECK 1
4) Loosen the screw to pull up and disassemble the Tray Disc.
2
Figure 4
5) Loosen the screw to pull up and disassemble the Gear Tray CAM.
Figure 5
6) Disassemble the Gear Tray, Tray Motor Assy and Loading PCB Assy from the Tray Loading.
Figure 6 2-3
ORDER OF DISASSEMBLY FOR MECHANISM DECK 3
1
2
1
Figure 7 7) Disassemble the Harness Cable from the Base Main. Disassemble the Base Sled Assy from the Base Main by referring to Figure. 2
3
1
Figure 9 2
9) Push the Guide UD in direction 1 to disassemble it from the Base Main.
Figure 8 8) Disassemble each gear part, Clamp Disc, Clamp Magnet and Cover Plate from the Base Main. Disassemble the Loading Motor Assy by being careful of the hook on the surface of the Base Main.
2-4
ORDER OF DISASSEMBLY FOR MECHANISM DECK 10) Use a solder to remove the Motor Jump Wire from the Main PCB Assy and then disassemble the FFC Cable. Loosen the screw to disassemble the Main PCB Assy.
1
2
4
3
Figure 10
2-5
2. ORDER OF ASSEMBLY FOR MECHANISM DECK 1) Assemble the Loading Motor Assy to the Base Main. (When assembling the Motor Assy, use the hook on the surface of the Base Main to preassemble, and then tighten the screws.)
Figure 1
2) Set the Guide UD on the Base Main. After setting the part, push it in direction 3.
1 2 3
Figure 2 2-6
ORDER OF ASSEMBLY FOR MECHANISM DECK 3) Set the Gear Loading 1 and Gear Pulley 2 on the Base Main. Hang the belt between the Gear Pulley and Motor Pulley. Assemble the Clamp Disc, Clamp Magnet and Cover Plate to the Base Main.
2 1
Figure 3
4) After setting the Gear Main 2, Gear Pu Up 3 and Gear Pu Down 4 on the Base Main, tighten the screws. After assembling the Gear Main, align the location as shown in Figure.
1
2
4
3
Figure 4 2-7
ORDER OF ASSEMBLY FOR MECHANISM DECK 1
2
1 2
3
4 5
Figure 5
Figure 6
5) After setting the Main PCB Assy on the Base Main, tighten the screw. (Set the part accurately on the hook) Solder the Motor Jump Wire on the PCB set on the Base Main.
6) Set the Base Sled Assy on the Base Main. (When setting the part, assemble with the CAM part of the Guide UD inserted in two locations of the Boss of Frame UD) Align the FFC to the Guide and connect the Harness Cable.
2-8
ORDER OF ASSEMBLY FOR MECHANISM DECK 1
2
Figure 7
Figure 8
7) After setting the Gear Tray, Tray Motor Assy and Loading PCB Assy on the Tray Loading, tighten the screw.
8) Assemble the Gear Tray CAM on the Tray Loading and set the Tray Disc. (When assembling, check the location of the Gear Tray CAM and Tray Disc as shown in the Figure)
2-9
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
3
Figure 9
Figure 10
9) Assemble the Tray Loading Assy on the Base Main Assy as shown in the Figure. After assembling, insert the Loading FFC to the 5 Pin Wafer of Main PCB Assy.
10) After setting the Cover Guide Disc, tighten the screw.
2-10
EXPLODED VIEWS
NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.
1. CABINET AND MAIN FRAME SECTION (MCT806) 464
268 464
CABLE6
A43
270
464
464 CABLE1
A49
H
VFD
269
CABLE7
464
464
E
464 264
J
VOLUME
iPod 464
F
464
463
A42 I
464
A26 C D
SMPS A47
A B
463 265
255B 267
255A
464 A44 464
I
300
463
251
C
D
255C
H J
G
464
USB
266 271
MAIN
G
272
464 A46
A45
CN101
F
CABLE2
E
464
B
CN102
2-11
2-12
A
MEMO
2. MECHANISM DECK SECTION (CDM-H1803) 416
151 A26 443
153A
155 153
156
443
422 443
182 159 177
416 173
001 002
417
A02
003
172 166
A01 421
417 012 167
010
012B
440
421
137 012
421 162 164
175
012B
012 012A 180
163
421 012
165
422
2-13
2-14
3. PACKING ACCESSORY SECTION
801 Owner’s Manual
900 Remote Control
824 AM Loop Antenna
910 Cover
825 FM Wire Antenna
803 Packing
804 Bag
802 Box
2-15
4. SPEAKER SECTION 4-1. FRONT SPEAKER (MCS1306F)
A60L A60R
2-16
4-2. PASSIVE SUBWOOFER (MCS1306W)
A90
2-17
MEMO
2-18
SECTION 3 ELECTRICAL CONTENTS TRAINING MASTER ................................................................................................................................... 3-2 1. 2. 3. 4. 5. 6. 7. 8.
NO NO NO NO NO NO NO NO
SOUND FROM SPEAKERS ............................................................................................................ 3-2 SOUND IN AUX FUNCTION............................................................................................................ 3-3 SOUND IN PORT. IN FUNCTION ................................................................................................... 3-4 SOUND IN IPOD FUNCTION .......................................................................................................... 3-5 SOUND IN AM/FM FUNCTION ....................................................................................................... 3-6 SOUND IN CD FUNCTION .............................................................................................................. 3-7 SOUND IN USB FUNCTION............................................................................................................ 3-9 POWER .......................................................................................................................................... 3-10
ONE POINT REPAIR GUIDE................................................................................................................. 3-11 1. 2. 3. 4. 5.
NO POWER .......................................................................................................................................... 3-11 NO BOOTING WHEN POWER ON THE SET ..................................................................................... 3-13 VFD IS NOT DISPLAYED WHEN POWER ON THE SET................................................................... 3-14 NO OPERATION OF MD ..................................................................................................................... 3-15 NO SOUND .......................................................................................................................................... 3-21
ELECTRICAL TROUBLESHOOTING GUIDE.................................................................................. 3-29 1. 2. 3. 4.
POWER SUPPLY ON SMPS BOARD ................................................................................................. 3-29 SYSTEM PART .................................................................................................................................... 3-33 NO AUDIO PART ................................................................................................................................. 3-34 DIGITAL AUDIO AMP CHECK ............................................................................................................. 3-39
WAVEFORMS............................................................................................................................................. 3-40 WIRING DIAGRAM ................................................................................................................................... 3-43 BLOCK DIAGRAMS ................................................................................................................................. 3-45
1. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-45 2. SMPS BLOCK DIAGRAM..................................................................................................................... 3-47 3. POWER BLOCK DIAGRAM ................................................................................................................. 3-49
CIRCUIT DIAGRAMS ............................................................................................................................... 3-51
1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-51 2. MICOM CIRCUIT DIAGRAM ................................................................................................................ 3-53 3. PWM CIRCUIT DIAGRAM.................................................................................................................... 3-55 4. AMP CIRCUIT DIAGRAM..................................................................................................................... 3-57 5. DSP CIRCUIT DIAGRAM ..................................................................................................................... 3-59 6. RF SERVO CIRCUIT DIAGRAM .......................................................................................................... 3-61 7. ADC CIRCUIT DIAGRAM ..................................................................................................................... 3-63 8. BEAT BOX CIRCUIT DIAGRAM .......................................................................................................... 3-65 9. VFD CIRCUIT DIAGRAM ..................................................................................................................... 3-67 10. VOLUME CIRCUIT DIAGRAM ............................................................................................................. 3-69 11. USB CIRCUIT DIAGRAM ..................................................................................................................... 3-71 12. IPOD CIRCUIT DIAGRAM.................................................................................................................... 3-73 13. MIC CIRCUIT DIAGRAM (OPTIONAL PART) ..................................................................................... 3-75
CIRCUIT VOLTAGE CHART ................................................................................................................. 3-77 PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-81 1. 2. 3. 4. 5. 6. 7.
MAIN P.C.BOARD ................................................................................................................................ 3-81 SMPS P.C.BOARD ............................................................................................................................... 3-85 VFD P.C.BOARD .................................................................................................................................. 3-87 VOLUME P.C.BOARD .......................................................................................................................... 3-89 USB P.C.BOARD.................................................................................................................................. 3-91 IPOD P.C.BOARD ................................................................................................................................ 3-91 MIC P.C.BOARD (OPTIONAL PART) .................................................................................................. 3-91
3-1
TRAINING MASTER 1. NO SOUND FROM SPEAKERS Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
Make sure to connect the cables to each specified connector tightly on the unit. Connect the woofer cables to the WOOF SYSTEM connectors on the rear panel.
YES
Does the customer select correctly the input function he or she wants to listen to?
NO
Make sure to connect some cables like A/V cables and FM/AM antenna cables.
NO
Make sure to select the desired input function pressing FUCTION button.
NO
The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up.
NO
Refer to a device’s instruction manual and then check if there is sound output from it connecting another audio system.
YES
After pressing FUNCTION, is “CD, USB, AUX, IPOD, AM or FM” displayed?
YES
Turn the master volume clockwise for the volume up.
YES
Is there any sound from the selected input source? (AUX IN, USB, TUNER or CD Disc)
YES Are the sound spectrum level LEDs on the left and right side of the front panel being changed up and down according to the sound input gain?
NO
YES
The sound is output from the speakers.
YES
Sound OK
3-2
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. The speakers cables might be short-circuited with the chassis ground. Be careful not to be shorted each other.
TRAINING MASTER 2. NO SOUND IN AUX FUNCTION Does the customer select correctly the AUX function he or her wants to listen to?
NO
Make sure to connect some cables between the AUX IN jacks of the unit and the Audio output jacks of a external Audio device.
NO
Make sure to select the AUX IN function pressing the AUX/IPOD/PORT. IN button.
NO
The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up.
NO
Refer to a device’s instruction manual and then check if there is sound output from it connecting another audio system
YES
After pressing the FUNCTION, is “AUX” displayed on VFD?
YES
Turn the master volume clockwise for the volume up.
YES
Is there any sound from the selected input source?
YES Are the sound spectrum level LED’s on the left and right side of the front panel being changed up and down according to the sound input gain?
NO
The sound spectrum level LED’s will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
YES
The sound is output from the speakers.
YES
Sound OK
3-3
Make sure to connect the cables to each specified connector tightly on the unit.
TRAINING MASTER 3. NO SOUND IN PORT. IN FUNCTION Does the customer select correctly the PORT. IN function he or her wants to listen to?
NO
Make sure to connect a cable between the PORT. IN jack of the unit and the Audio output jack of a portable device like a MP3 player.
NO
Make sure to select the PORT. IN function pressing the AUX/IPOD/PORT. IN button.
NO
The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up.
NO
Refer to a portable device’s instruction manual and then check if there is sound output from it connecting another audio system.
YES
Is “PORT. IN” displayed on VFD?
YES
Turn the master volume clockwise for the volume up.
YES
Is there any sound from the selected input source?
YES Are the sound spectrum level LED’s on the left and right side of the front panel being changed up and down according to the sound input gain?
NO
The sound spectrum level LED’s will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
YES
The sound is output from the speakers.
YES
Sound OK
3-4
Make sure to connect the cables to each specified connector tightly on the unit.
TRAINING MASTER 4. NO SOUND IN IPOD FUNCTION Does the customer select correctly the iPod function he or she wants to listen to?
NO
Make sure to put a iPod or a iPhone on the docking system on the top of the unit.
YES
Does the customer use the compatible iPod?
NO
Make sure that The unit supports the models as follows/iPod nano 1 G, 2 G, 3 G, 4 G, 5 G, 6 G/ iPod classic/ iPod 4 G, 5 G/ iPod touch 2 G, 3 G, 4 G/ iPhone 3 G, 4 G/.
YES
After displaying “Loading”, is “IPOD” displayed on VFD?
NO
If “ERROR”message is displayed, make sure firmly to put a iPod or a iPhone on the docking system on the top of the unit. When the battery of a iPod or a iPhone is fully discharged, the unit can not detect IPOD function, Please wait for a moment and then it will work after charging a little.
YES After selecting desired songs using the user interface of a iPod or a iPhone, press PALY button and turn the master volume clockwise for the volume up.
NO
The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up.
NO
Refer to a device’s instruction manual and then check if there is sound output from it connecting another audio system.
YES
Is there any sound from iPod or iPhone?
YES Are the sound spectrum level LED’s on the left and right side of the front panel being changed up and down according to the sound input gain?
NO
The sound spectrum level LED’s will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
Make sure to connect the cables to each specified connector tightly on the unit.
YES
The sound is output from the speakers.
YES
3-5
Sound OK
TRAINING MASTER 5. NO SOUND IN AM/FM FUNCTION Does the customer select correctly the AM/FM function he or she wants to listen to?
NO
Make sure to connect AM/FM antennas on the rear panel of the unit.
NO
Make sure to select AM or FM function pressing the FUNC button.
YES
Is “AM or FM” displayed on VFD?
YES After tuning a desired channel using the TUNING± button, is the sound quality good to listen to the music?
NO
To prevent noise pickup, keep the AM Loop antenna away from the unit and other components. Be sure to fully extend the FM wire antenna. After connecting the FM wire antenna, keep it horizontal.
YES
Is the signal strength of the radio station too week?
NO
Make sure to tune the station manually.
YES Are the sound spectrum level LED’s on the left and right side of the front panel being changed up and down according to the sound input gain?
NO
The sound spectrum level LED’s will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
YES
The sound is output from the speakers.
YES
Sound OK
3-6
Make sure to connect the cables to each specified connector tightly on the unit.
TRAINING MASTER 6. NO SOUND IN CD FUNCTION Does the customer select correctly the CD function he or she wants to listen to?
NO
Make sure to put on a CD disc on the tray.
YES
Is a CD disc put on the tray correctly?
NO
Make sure to insert the CD disc upside down.
YES
Does the unit display “NO DISC” on VFD when a disc is inserted on the tray?
NO
Place the disc with the label or printed side facing upwards.
NO
Check the playable disc. Make sure that the file extensions are “.mp3” or “.wma”.
NO
Make sure to check the supported MP3/WMA music file on the CD disc. Refer to the owner’s manual.
NO
The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up.
YES
Does the customer use the supported mp3 or WMA music files on the disc?
YES When the unit searches music files in a CD disc, are the following messages displayed on VFD? “SELECTED” “TRACKING #” and “TIME”
YES After selecting a track number using the SCAN or DISC# button, press PLAY button and turn the master volume clockwise for the volume up.
YES
Is the sound quality good to listen to the music?
NO
Make sure to clean CD discs with a commercially available cleaner. If the surface of the disc is polluted or scratched, the sound quality can become bad or the customer can not listen to the music.
YES Are the sound spectrum level LED’s on the left and right side of the front panel changed up and down according to the sound input gain?
NO
YES 3-7
The sound spectrum level LED’s will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground. Be careful not to be shorted each other.
TRAINING MASTER YES Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
Make sure to connect the cables to each specified connector tightly on the unit.
YES
The sound is output from the speakers.
NO
3-8
Sound OK
TRAINING MASTER 7. NO SOUND IN USB FUNCTION Does the customer select correctly the USB function he or she wants to listen to?
NO
Make sure to insert a USB on the USB ports on the bottom of the unit.
NO
Make sure to select the USB function pressing the CD/USB button.
NO
When “No USB” is displayed, make sure that the customer uses the recommended USB which support USB2.0 or USB1.1.
NO
Check if it is the playable disc or not. Make sure that the file extensions are “.mp3”or “.wma”.
NO
Make sure to check the compatible USB device and the supported MP3/WMA music file requirement. Refer to the owner’s manual.
NO
The volume level LEDs around the master volume will be turned on more and more while turning it clockwise for the volume up.
YES
Is “USB” displayed on VFD?
YES
Does the unit display “SELECTED” on VFD when a USB is inserted into the USB port?
YES
Does the customer use the supported mp3 or WMA music files on the disc?
YES When the unit searches music files in a USB, are the following messages displayed on VFD? “SELECTED” “TRACKING #” and “TIME”
YES After selecting a track number using the SCAN button, press PLAY button and turn the master volume clockwise for the volume up.
YES Are the sound spectrum level on the left and right side of the front panel being changed up and down according to the sound input gain?
NO
The sound spectrum level will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES Are the speaker cables connected correctly between the speaker terminals on the unit and the speakers?
NO
YES 3-9
Make sure to connect the cables to each specified connector tightly on the unit.
TRAINING MASTER YES
The sound is output from the speakers.
NO
Sound OK
8. NO POWER Is the power cord plugged into a electrical outlet?
NO
Make sure to plug the power cord of the unit into a electrical outlet.
YES
Does the Standby LED light in red color?
NO
If the customer can not see the red light on the front panel, the SMPS might have any problem. Please solve the problem referring to the service manual.
YES Is the Standby LED turned off after pressing the Power button on the remote control?
NO
Replace the batteries with new ones if the remote control doesn’t work.
NO
The SMPS might be not able to supply the power to drive the VFD. Refer to the service manual to fix it.
YES Are the messages displayed in the following order on VFD? “HELLOW” “VOLUME 15” “FUNCTION”
YES
Is there any sound from the speakers each input function?
NO
YES
Power & Sound OK
3-10
Make sure to connect speaker cables.
ONE POINT REPAIR GUIDE 1. NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-1. FUSE & BRIDGE DIODE 1-1-1. Solution Please check and replace F901, BD901, TH901, TH903 on SMPS board.
1-1-2. How to troubleshoot (Countermeasure) 1) Check if the fuse F901 is open or short-circuit. 2) Check if the bridge diode DB901 is short-circuit by over current with a digital multi meter. 3) Check if the NTC thermistor TH901 and TH902 is normal or open.
1-1-3. Service hint (Any picture / Remark)
< F901 > If F901 is not short-circuit, replace it with a same specifications one.
< BD901 > If BD901 is short-circuit, replace it with a new one.
3-11
< TH901, TH903 > If TH901 or TH902 is open, replace it with a new one.
ONE POINT REPAIR GUIDE NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-2. D951, ZD951 1-2-1. Solution Please check and replace D951, ZD951 on SMPS board.
1-2-2. How to troubleshoot (Countermeasure) 1) Check the Anode-Cathod Voltage of D951 with a digital multi-meter, it is normally 0.2 ~ 0.3 V. If it doesn’t have any voltage, it’s destroyed. Replace it with a new one. 2) Check if ZD951 is short-circuit. If it is short-circuit, and then replace it with a new one.
1-2-3. Service hint (Any picture / Remark)
< SMPS schematic diagram > 3-12
ONE POINT REPAIR GUIDE 2. NO BOOTING WHEN POWER ON THE SET The set doesn’t work when press the power button on the front board or the remote control. 2-1. FLASH MEMORY 2-1-1. Solution Please check and replace IC101 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure) 1) Check the 3.7VA to CN102, CN103, and CN104 in standby mode. If there is no 3.7 VA, check the SMPS. 2) Check 5.6 V, 12 VA, FL+, FL- and 32 V when power on the set. - If the set doesn’t work regardless of what the KEY1 changes high to low while pressing the power button. X100 and X101 work normally but, if you can not power on the set, replace the IC101 with a new one on the main board.
2-1-3. Service hint (Any picture / Remark)
w~ y j{ys OyX[`P
rl X O X[P XWW O`UZ_ZWto¡P
XWX OZYU^]_ro¡P
< Signal check point >
3-13
ONE POINT REPAIR GUIDE 3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET When power on the set, any icons or characters on VFD are not displayed. 3-1. VFD 3-1-1. Solution Please check and replace DIG301 on FRONT board.
3-1-2. How to troubleshoot (Countermeasure) 1) Check if 32 V, FL+ and FL- are output from SMPS to VFD via the MAIN board. 2) Check if the IC101 outputs VFD_RST, VFD_CLK, VFD_STB, and VFD_STB to the FRONT board. 3) Check if the VFD grid current amplifier circuit (Q301, Q303, Q304) on the FRONT board. Check the drive signal to the transistor’s base. If the control signals from VFD (TP302, TP303, TP304) isn’t output, replace VFD with a new one. If the transistor doesn’t work, replace it.
3-1-3. Service hint (Any picture / Remark)
kpnZWXG} mk
{wZWYSG {wZWZSG {wZW[
yZY^O{wZW[P xZWXGl xZWX
xZWZ
G ZW} T
xZW[
j G G SG G G G G G U j G G G G U
< Waveform of the grid current driver >
3-14
ONE POINT REPAIR GUIDE 4. NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the SPINDLE MOTOR among them. 4-1. SPinDLE MOTOR 4-1-1. Solution Please check and replace IC407, IC408 on MAIN board.
4-1-2. How to troubleshoot (Countermeasure) 1) Check the SPDO signal from Pin16 of IC407. If no signal, check 3.3V(RF) and X402. 2) Check the SP- & SP+ from IC408 to CN405 for driving SPinDLE motor. It is about 3.6 Vp-p. If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD. If the sPindle motor is sort-circuit or has any trouble, it can not rotate CD discs. Please check the function after changing another MD.
4-1-3. Service hint (Any picture / Remark)
G ZU]} T
zwR YG Gju[W\
zwT Gju[W\ zwRG Gju[W\
zwT XG Gju[W\
< Waveform of SP- & SP+ for driving SPinDLE motor >
< Signal check point >
3-15
pj[W_
ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the SLED MOTOR among them. 4-2. SLED MOTOR 4-2-1. Solution Please check and replace IC407, IC408 on MAIN board.
4-2-2. How to troubleshoot (Countermeasure) 1) Check the SLDO signal from Pin15 of IC407. If no signal, check 3.3V(RF) and X402. 2) Check the SLED+ & SLED-from IC408 to CN405 for driving SPinDLE motor. It is about 2.9 Vp-p. If no signal, check +1.8V and +5V for IC408. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD. If the sled motor is sort-circuit or has any trouble, it can not move the pickup module. Please check the function after changing another MD.
4-2-3. Service hint (Any picture / Remark)
h G YU`} T
zsR [G Gju[W\ zsT Gju[W\ zwT Gju[W\ zsRG Gju[W\ zwRG Gju[W\
zsT ZG Gju[W\ < Waveform of SLED- & SLED+ for driving SLED motor >
< Signal check point >
3-16
pj[W_
ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the TRAY MOTOR among them. 4-3. TRAY MOTOR 4-3-1. Solution Please check and replace IC407, IC408 on MAIN board.
4-3-2. How to troubleshoot (Countermeasure) 1) Check TUR+ & TUR-signals from Pin56 & 57 of IC501 to IC406. If no signal, check +5 V to IC406. 2) Check TUR_M+ & TUR_M- from IC406 to CN405 for driving TRAY motor. It is about 3.8 Vp-p. If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD. If the tray motor is sort-circuit or has any trouble, it can not rotate the tray. Please check the function after changing another MD.
4-3-3. Service hint (Any picture / Remark)
h G ZU_} T
{|y tT _G Gju[W\
{|y tRG Gju[W\ {|y tT Gju[W\
{|y tR ^G Gju[W\ < Waveform of TUR_M± for driving TRAY motor >
< Signal check point >
3-17
pj[W_
ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD don’t work. This step is for checking the TRAY OPEN/CLOSE MOTOR among them. 4-4. TRAY OPEN / CLOSE MOTOR 4-4-1. Solution Please check and replace IC407, IC408 on MAIN board.
4-4-2. How to troubleshoot (Countermeasure) 1) Check MOT_OPEN & MOT_CLOSE signals from Pin104 & 105 of IC501 to IC408. If no signal, check +1.8 V & + 5 V to IC408. 2) Check LOAD± from IC406 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p. If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one. 3) Check if the FFC cable is solidly connected between CN405 and MD. 4) Check the MD. If the tray motor is sort-circuit or has any trouble, it can not open or close the tray. Please check the function after changing another MD.
4-4-3. Service hint (Any picture / Remark)
ju[W\ h G ZU_\} T
svR XZG Gju[W\ tv{ vwlu ^ G Gpj[W_ tv{ jsvzl
tv{ vwlu tv{ jsvzl svT Gju[W[ svRG Gju[W[
] G Gpj[W_ svT XYG Gju[W\
< Waveform for driving TRAY open / close motor >
< Signal check point >
3-18
pj[W_
ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesn’t work. This step is for checking the LASER TRACKING ACTUATOR. 4-5. LASER TRACKING ACTUATOR 4-5-1. Solution Please check and replace IC407, IC408 on MAIN board.
4-5-2. How to troubleshoot (Countermeasure) The tracking actuator makes the laser beam be positioned in the center of a track on CD disc. 1) Check the TRD signal from Pin14 of IC407. If no signal, check 3.3 V(RF) and X402. 2) Check T- & T+ from IC408 to CN404 for driving the tracking actuator. If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN404 and MD. 4) Check the MD. If the pickup module has any trouble, it can not move the laser beam on the left or right side. Please check the function after changing another MD.
4-5-3. Service hint (Any picture / Remark)
ju[W[
{R ZG Gju[W[ {T Gju[W[ {RG Gju[W[
{T YG Gju[W[
< Waveform of T± for driving TRACKING actuator >
< Signal check point >
3-19
ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesn’t work. This step is for checking the LASER FOCUSING ACTUATOR. 4-6. LASER FOCUSING ACTUATOR 4-6-1. Solution Please check and replace IC407, IC408 on MAIN board.
4-6-2. How to troubleshoot (Countermeasure) The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc. 1) Check the FOD signal from Pin13 of IC407. If no signal, check 3.3 V(RF) and X402. 2) Check F- & F+ from IC408 to CN404 for driving the focusing actuator. If no signal, check +1.8 V and +5 V for IC408. 3) Check if the FFC cable is solidly connected between CN404 and MD. 4) Check the MD. If the pickup module has any trouble, it can not move the laser beam on the top or bottom side. Please check the function after changing another MD.
4-6-3. Service hint (Any picture / Remark)
{T
ju[W[
mR [G Gju[W[ mRG Gju[W[ mT Gju[W[
mT XG Gju[W[
< Waveform of TR± for driving FOCUSING actuator >
< Signal check point >
3-20
ONE POINT REPAIR GUIDE 5. NO SOUND There is no sound output in the CD FUNCTION, repair the set according to the following guide. 5-1. IN THE CD FUNCTION 5-1-1. Solution Please check and replace IC501, IC602, IC801 on MAIN board.
5-1-2. How to troubleshoot (Countermeasure) 1) Check CD_BCK, CD_LRCK, & CD_DATA signals from IC407 to IC501. If no signal, check if the RF & servo signals from MD is entered to IC407. Refer to the “No operation of MD” guide on Item 4. 2) Check the following I2S signal flow. < I2S audio signal Interface > - DAC_BCK: IC501_87Pin --> IC507_16Pin --> IC602_4Pin - DAC_LRCK : IC501_88Pin --> IC507_5Pin --> IC602_4Pin (44.1 kHz) - DAC_DATA : IC501_83Pin --> R817 next to IC01 --> IC602_6/9Pin - DAC_MCLK : IC501_86Pin --> R818 next to IC801 If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 3) Check if “Digital audio AMP block” on Item 5-2 is normal.
5-1-3. Service hint (Any picture / Remark) {T
IC407 BU9543KV
IC501 MLC9800 BEAT_DATA
DAC_BCK DAC_LRCK
IC602 PS9850 PWM
AMP IC TAS5631
DAC_MCLK
khj tjsrGOX]U`Zto¡P khj ijrGOXU[to¡P khj kh{h khj syjrGO[[UXro¡P
IC801 FS502B BEAT BOX
< Waveform of I2S audio interface signals >
< I2S Signal Flow >
3-21
ONE POINT REPAIR GUIDE NO SOUND There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide. 5-2. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS) 5-2-1. Solution Please check and replace IC701, IC702, IC703 on MAIN board.
5-2-2. How to troubleshoot (Countermeasure) 1) Check FL±, FR±, RL±, RR±, SW1±, & SW2± signals from IC602 to IC701, 702 & 703 each input function. If no signal, check if I2S audio signals are entered to IC602. Refer to “I2S audio signal interface” on Item 5-1. 2) Check PVDD_48V. If 48 V is abnormal, check the SMPS. 3) Check +12 for driving the gate of AMP IC. a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged. b. Remove a ferrite bead among FB703, FB707 and FB713 one by one. When removed a ferrite bead, if +12 V is recovered, the IC connected to it was damaged. c. Replace the IC with a new one. 4) Check the impedance between SPK+ & GND and SPK- & GND. a. If the impedance is 0 Ω, the IC must be damaged. b. After removing the heat sink, replace it with a new one. Comments !! If a AMP IC among three is damaged, “AMP_PDN” to R103 changes HIGH to LOW at regular intervals. The sound is not output by AMP power down function.
5-2-3. Service hint (Any picture / Remark) yXWZOhtw wkuP khj kh{h
pj^WX
pj^WY
pj^WZ
ilhk
< Signal check point >
3-22
pjXWX
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the following guide. 5-3. IN THE USB FUNCTION 5-3-1. Solution Please check and replace IC501, IC504 on MAIN board & IC3U01 on USB board.
5-3-2. How to troubleshoot (Countermeasure) 1) Check +5VU to USB board. If the USB LEDs are turned on, the voltage is okay, if so not, check +5.6 V to Pin8 of CN602. 2) Check USB D± from main board to USB board. a. Check USB_HUB_DN/DP signals to IC501(Pin116, 117) b. Check USB1/2_DN/DP signals from IC504 to CN602 (Pin10, 11, 13, & 14) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one. 3) Check if “Digital audio AMP block” on item 5-2 is normal.
5-3-3. Service hint (Any picture / Remark)
{T
IC504 USB2512B DAC_MCLK
USB Board
USB
ADC_DATA DAC_BCK DAC_LRCK
IC501 MLC9800 DAC_DATA
USB_D
IC602 PS9850 PWM
AMP IC TAS5631
DAC_MCLK
kT G XWG Gju]WY
IC801 FS502B BEAT_DATA BEAT BOX
kRG G GXXG Gju]WY
< Waveform of USB D± signal >
< USB function signal flow >
3-23
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the AUX FUNCTION, repair the set according to the following guide. 5-4. IN THE AUX FUNCTION 5-4-1. Solution Please check and replace IC202 on MAIN board.
5-4-2. How to troubleshoot (Countermeasure) 1) Check AUX_L/R signals to IC202 (Pin7, 8). 2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202. 3) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one. 4) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2. If AMP is damaged, replace it with a new one.
5-4-3. Service hint (Any picture / Remark) {T
IC202 CS5346 DAC_MCLK
AUX
h| yG GyYWZ
h| sG GyYWY
ADC_DATA
IC501 MLC9800 DAC_DATA
AUX_L/R
hkj tjsrG GyYYX DAC_BCK DAC_LRCK
IC602 PS9850 PWM
AMP IC TAS5631
DAC_MCLK
pjYWY hkj kh{hGG GyYX\
IC801 FS502B BEAT_DATA BEAT BOX
hkj ijrG GyYX] kRG G GXXG Gju]WY hkj syjrG GyYX`
< AUX function signal flow >
< Signal check point >
3-24
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the IPOD FUNCTION, repair the set according to the following guide. 5-5. IN THE IPOD FUNCTION 5-5-1. Solution Please check and replace IC201, IC202, IC203 on MAIN board.
5-5-2. How to troubleshoot (Countermeasure) 1) Check USB VBUS_+5V to Pin3 of CN201 after inserting the iPod to IPOD Docking System. If no power, check if IPOD_P_CTRL to Pin3 of IC203 change Low to High. 2) Check if IPOD Audio L/R signals are entered from Pin11 & 12 of CN201 to Pin10 & 6 of IC201. 3) Check if the IPOD Audio L/R that some noise is removed to IC201 are output from Pin1 & 5 of IC201. If no signal, replace the IC with a new one. 4) Check IPOD_L/R signals from 1 & 5 of IC201 to IC202(Pin26, 27). 5) Check if ADC_BCK, ADC_LRCK & DAC_MCLK are entered from IC501 to IC202. 6) Check if ADC_DATA is entered from IC202 to IC501. If there is no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one. 7) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one. 8) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2. If an AMP is damaged, replace it with a new one
5-5-3. Service hint (Any picture / Remark) {T
IC202 CS5346 DAC_MCLK
IPOD_L/R
hkj tjsrG GyYYX
ADC_DATA
IC501 MLC9800 DAC_DATA
iPod
DAC_BCK DAC_LRCK
IC602 PS9850 PWM
pjYWY
AMP IC TAS5631
hkj sy GyYX`
DAC_MCLK
IC801 FS502B BEAT_DATA BEAT BOX
pwvk sG GyYY]X
< iPod function signal flow >
< Signal check point >
3-25
hkj ijrG GyY
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the PORT. IN FUNCTION, repair the set according to the following guide. 5-6. IN THE PORT. IN FUNCTION 5-6-1. Solution Please check and replace IC202 on MAIN board.
5-6-2. How to troubleshoot (Countermeasure) 1) 2) 3) 4) 5)
Check PT_L/R signal from Main board to USB board. Check if PT_LR is entered from Pin1 & 3 of CN3U01 to Pin1 & 3 to CN502. Check POT_L/R signals to IC202(Pin21, 22). Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202. Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one. 6) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one. 7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2. If AMP is damaged, replace it with a new one
5-6-3. Service hint (Any picture / Remark) {T
IC202 CS5346 DAC_MCLK
USB Board
POT. IN
h| sG GyYWY
ADC_DATA
IC501 MLC9800 DAC_DATA
POT_L/R
hkj tjsrG GyYYX DAC_BCK DAC_LRCK
IC602 PS9850 PWM
AMP IC TAS5631
w{ sG G YX w{ yG G YY
DAC_MCLK
pjYWY hkj kh{hGG GyYX\
IC801 FS502B BEAT_DATA BEAT BOX
hkj ijrG GyYX] kRG G GXXG Gju]WY hkj syjrG GyYX`
< PORT. IN function signal flow >
< Signal check point >
3-26
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the TUNER FUNCTION, repair the set according to the following guide. 5-7. IN THE TUNER FUNCTION 5-7-1. Solution Please check and replace IC202, TU101 on MAIN board.
5-7-2. How to troubleshoot (Countermeasure) 1) Check if TUNER_LR is entered from Pin1 & 3 of T1U01 to IC202(Pin23, 24). If no signals, Check +3.3 V for Tuner power. Check if the Tuner control signals (CLK, DAT, CE, RST, GPO2) are entered from IC101 to TU101. If it doesn’t work, replace TUNER with a new one. 2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202. 3) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one. 4) Check the following I2S audio signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one. 5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2. If AMP is damaged, replace it with a new one.
5-7-3. Service hint (Any picture / Remark) {T
IC202 CS5346 DAC_MCLK
TUNER
h| sG GyYWY
ADC_DATA
IC501 MLC9800 DAC_DATA
TUNER_L/R
DAC_BCK DAC_LRCK
{|uly sG G YZ
IC602 PS9850 PWM
AMP IC TAS5631
DAC_MCLK
{|uly yG G Y[
hkj tjsrG GyYYX pjYWY
hkj kh{hGG GyYX\
IC801 FS502B BEAT_DATA BEAT BOX
hkj ijrG GyYX] kRG G GXXG Gju]WY hkj syjrG GyYX`
< TUNER function signal flow >
< Signal check point >
3-27
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the MIC IN FUNCTION, repair the set according to the following guide. 5-8. IN THE MIC IN FUNCTION 5-8-1. Solution Please check and replace IC603, IC605 on MAIN board.
5-8-2. How to troubleshoot (Countermeasure) 1) Check MIC_SIG signal to Pin 27 of CN104. If no signal, Check the signal to Pin 3 of CN301 on the FRONT board. Check if the signal is entered from Pin3 of CN301 to MAIN board. 2) Check if MIC_SIG is entered from Pin27 of CN104 to Pin3 to IC605 (MIC AMP). 3) Check if the amplified signal is entered from Pin4 of IC605. If no signal output, check +12 V for IC605, replace IC605 with a new one if it has a problem. 4) Check if MIC_BCK & MIC_LRCK is entered from IC507 to IC603 and DAC_MLCK from IC501 to IC603. Check if MIC_DATA is entered from Pin 9 of IC603I to Pin 7 of IC602. If no signal, check +5 V & +3.3 V for IC603. If it is abnormal, change replace it a new one. 6) Check the following I2S signal flow from IC603 to IC602. If there is any trouble, check the power for each IC. If the signals are abnormal, replace it a new one. 7) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2. If AMP is damaged, replace it with a new one.
5-8-3. Service hint (Any picture / Remark)
IC603 AK5358 DAC_MCLK
MIG_SIG
MIC Board
MIC IN tpj zpnG G GXMYG
MIC_DATA
IC501 MLC9800 DAC_DATA
IC605 S4308
DAC_BCK DAC_LRCK
hkj tjsrG Gy]_Y
IC602 PS9850 PWM
AMP IC TAS5631
DAC_MCLK
zkv|{X Gy][\
IC801 FS502B BEAT_DATA BEAT BOX
tpj ijrG Gy][Z
tpj syjrG Gy][[
< MIC IN function signal flow >
< Signal check point >
3-28
ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER SUPPLY ON SMPS BOARD No output 3.7 / 5.6 VA
F901 normal?
NO
Replace F901 (same fuse).
YES BD901 normal?
NO
Replace BD901.
YES D904 normal?
NO
Replace D904.
YES IC934 normal?
NO
Replace IC934.
YES D933, D937 normal?
NO
Replace D933, D937.
YES Power line of MAIN PCB is short.
3-29
ELECTRICAL TROUBLESHOOTING GUIDE
No output 12 V
F901 normal?
NO
Replace F901 (same fuse).
YES BD901 normal?
NO
Replace BD901.
YES D904 normal?
NO
Replace D904.
YES D934, D935 normal?
NO
Replace D934, D935.
YES IC931 normal?
NO
Replace IC931.
YES Power Line of Main PCB is short.
3-30
ELECTRICAL TROUBLESHOOTING GUIDE
No output FL+/FL-
P-CTRL OK?
NO
Check 3.3 V Output & P-CTRL.
YES D931, D932 OK?
NO
Replace D931, D932.
YES ZD931 OK?
NO
Replace ZD931.
YES FR931 short?
NO
Replace FR931.
YES Check soldering of PN901.
3-31
ELECTRICAL TROUBLESHOOTING GUIDE
No AMP Output
Is the VCC supplied to IC911 Pin7?
NO
YES
P-CTRL OK?
YES
NO
Replace ZD912, ZD913.
YES D951, D952 OK ?
Check 3.3V & P-CTRL.
YES Q901,D904 OK?
ZD912, ZD913 OK ?
NO
NO
Replace D951, D952.
YES Check soldering of CN902.
3-32
NO
Replace D914/ Q900/ PC901.
ELECTRICAL TROUBLESHOOTING GUIDE 2. SYSTEM PART Power on.
“HELO” Display on FLD OK?
NO
CN301 cable connection OK?
NO
Check FFC cable (Pin29).
YES
YES
CN301 Pin27, 28, 29 power OK?
NO
Check SMPS board.
YES CN301 Pin20, 21, 22 data signal OK?
NO
Check MAIN board.
YES
Volume LED (LD302~LD322) Turn on?
NO
Q301, 303, 304 grid voltage OK?
NO
CN301 Pin18 +12 V OK?
NO
Replace DIG301.
Check SMPS board.
YES
YES
CN301 Pin7, 9, 12 I2C data OK?
NO
Check MAIN board.
YES Replace LED (LD302 ~ LD322).
When turn the volume, count is change?
YES FRONT board OK.
NO
CN301 Pin13, 14 signal OK?
YES Check MAIN board.
3-33
NO
Check FFC cable.
ELECTRICAL TROUBLESHOOTING GUIDE 3. NO AUDIO PART CD FUNCTION
Can disc insert?
NO
YES
LOAD +- ok ?
NO
Is motor_open/ close OK? (IC408 Pin9,10)
YES
YES
Check IC301.
Is motor impedance about 12 立?
NO
Check Loading motor.
Check IC408.
NO Disc reading OK?
NO
OPU driving (Focusing & Tracking) OK?
NO
Focusing/ Tracking/ Sled Signal OK?
YES
YES Check OPU. (Pick-up module)
IC501 Pin100,101,102 I2S input signal OK?
NO
PD(CN404 Pin5) about 180 mV?
YES IC407 Pin34,35,36 I2S output signal OK?
NO
YES
IC501 Pin100,101,102 I2S input signal OK?
IC407 RF & Servo signal OK?
YES
NO
Check IC501.
YES A
3-34
NO
Check FFC cable to CN404, CN405.
ELECTRICAL TROUBLESHOOTING GUIDE
USB play
IC501 Pin116,117 USB_D output signal OK?
NO
Check IC501.
YES When insert USB,IC502 Pin1,2,3,4 USB_D signal OK?
IC3U01 USB power +5 V OK?
NO
NO
YES
YES
A
AUX
IC202 Pin7,8 AUX input signal OK?
NO
Check audio cable.
YES IC202 Pin42,43,44 I2S input signal OK?
NO
Check IC501.
YES IC202 Pin41 ADC data output signal OK?
NO
Replace IC202.
YES A
3-35
Replace IC3U01.
ELECTRICAL TROUBLESHOOTING GUIDE
POT. IN
IC202 Pin21,22 POT. IN input signal OK?
NO
Check USB board.
YES IC202 Pin42,43,44 I2S input signal OK?
NO
Check IC501.
YES IC202 Pin41 ADC data output signal OK?
NO
Replace IC202.
YES A
iPod
IC202 Pin25,26 iPod input signal OK?
NO
YES
YES
IC202 Pin42,43,44 I2S input signal OK?
IC203 Pin4 USB_VBUS 5 V OK?
NO
Check IC501.
YES IC202 Pin41 ADC data output signal OK?
NO
Replace IC202.
YES A
3-36
NO
Check USB_VBUS of IC203.
ELECTRICAL TROUBLESHOOTING GUIDE
TUNER
IC202 Pin21,22 TUNER_L/R input signal OK?
NO
YES
YES
IC202 Pin42,43,44 I2S input signal OK?
TU101 TUNER_L/R output signal OK?
NO
Check IC501.
YES IC202 Pin41 ADC data output signal OK?
NO
Replace IC202.
YES A
3-37
NO
Check +3.3 V of TU101.
ELECTRICAL TROUBLESHOOTING GUIDE
A
IC501 Pin83,87,88 I2S data output signal OK?
NO
Replace IC501.
YES IC507 Pin2,17 DAC_BCK/LRCK input signal OK?
NO
Check IC507.
YES IC507 Pin7,14 BEAT_LRCK/BCK output signal OK?
NO
Replace IC507.
YES IC501 Pin83 BEAT_DAC_DATA output signal OK?
NO
Check IC501.
YES IC501 Pin83 BEAT_DAC_DATA output signal OK?
NO
Check IC501.
YES IC801 I2S input signal OK?
NO
Check IC501.
YES IC801 BEAT_DATA output signal OK?
NO
Check IC801.
YES B
3-38
ELECTRICAL TROUBLESHOOTING GUIDE 4. DIGITAL AUDIO AMP CHECK B
IC602 I2S input signal OK?
NO
Check IC801 & IC501.
YES IC602 PWM data output signal OK?
NO
Replace IC602.
YES
IC701 FL±/FR± input signal OK?
YES
IC702 SW1±/SW2± input signal OK?
NO
Check IC602.
+12 VA, +48 V Power voltage OK?
NO
YES
IC703 RL±/RR± input signal OK?
NO
YES
Check IC602.
Check SMPS.
YES
IC701 SPK_FL±/FR± output OK?
YES
NO
Replace IC701.
Check L701, L702, L704, L705.
YES
IC702 SPK_SW output OK?
YES
NO
Replace IC702.
Check L708, L709, L710.
YES Check speaker cable connection.
OK
3-39
IC703 SPK_RL±/RR± output OK?
NO
YES
Replace IC703.
Check L711, L714, L715, L717.
YES
WAVEFORMS 1. WAVEFORM OF SP- & SP+ FOR DRIVING SPINDLE MOTOR
2. WAVEFORM OF SL- / SL+ FOR DRIVING SLED MOTOR
zwT
zsT
zsR
zwR
3. WAVEFORM OF TUR_M+ & TUR_ M- FOR DRIVING TRAY MOTOR
4. WAVEFORM OF LO- & LO+ FOR DRIVING PICKUP MODULE UP/DOWN MOTOR
svT
t v{ jsvzl {|y t R
svR
ZUY}
t v{ vwlu {|y t T
3-40
5. WAVEFORM OF RF SERVO
6. WAVEFORM OF I2S SIGNAL TO BEAT BOX IC (IC801)
ilh{ kh{h
ilh{ ijr
khj t jsr
ilh{ syjr
7. WAVEFORM OF BEAT BOX IC'S POWER SEQUENCE
8. WAVEFORM OF VFD GRID CURRENT DRIVER
joXayZY^O{wZW[P joYaxZWXGl
ZUZ}Oilh{P
w~y j{ys
ilh{ w~y
3-41
9. WAVEFORM OF USB_D±
kT
kR
3-42
670'4
.+0' 176
WIRING DIAGRAM
+0
( .
4 .
59
59
( 4
4 4
%0
16P
%0
%0
/& 59+6%*
18P
%0
/& 2+%-72
/& /'%*#
#WFKQ
/#+0 2%$ %0
%0
%0
+21& +2*10'
14P
15P
%0
15P
25P
%0 7
10P
%0
29P
%0
%0
%0
%0 8
75$ 2%$
(4106 2%$ 3-43
5/25 2%$ 3-44
BLOCK DIAGRAMS
1. OVERALL BLOCK DIAGRAM A,B,C,D,E,F
kljrGG tljohupzt
IC502 SDRAM
IC501 MLC9800 MCS LOGIC
TUR ·
IPOD_PCTRL/RX/TX/DET/READAY IPO L/R
ADC_EDID_PWM_DATA/CLK DAC_MCLK
DRM_WEN/CAS/RAS/SEL/CLK/CKE
IC200 CS5346
ADC_DATA
M00_15/A00_16
DAC_BCK/LRCK
SF_DI/DO
IC503 FLASH
REMOCON/KEY/
VFD DIG301
VFD_STB/CLK/DO/RST
IC101 MICOM LC87F085
IC801 FS503B LBT_RX/TX/RST BEAT BOX
LBT_DATA
FR ·
LBT_BCK /LBT_LRCK
IC602 PS9850 PWM
SPEANA
AUDIO OUT
IC501 S4308
POT. IN
AUX_L/R
AUX
MIC_SIG
IC603 AK5358
AUDIO OUT_L/R
DRV603 3-45
TU101 TUNER
AMP_OTW/SD/CLIP/READY AMP_PDN
RL· RR · SW1·
MIC
POT_L/R
TUNER_SCLK/SDIO/RST/GPIO2/SEN
FL· CLK/DATA
IC251 NJM2794
TUNER_L/R
SF_CS/SCK MICOM_CS/DO/DI/ CLK/MAIN_RESET
IC100 EEPROM
IPO AUDIO L/R
IC504 CP for IPOD
CP_RESET/SCL/SDA
MOT_MUTE/CLOSE/OPEN
IC406 S8082
USB_Ds
USB_RESET/SCL/SDA
OPEN/CLOSE/LIMIT/UPDN/D_SENSE TUR_Ms
pwvk k
USB HUB USB2512B
LBT_CLK
LOADs
SPDO/SLDO/FOD/TRD
LBT_DATA
SPINs
USB2 iPod
CD_MCK/BCK /LRCK/DATA
IC408 S3053 Motor Drive
SLEDs
CD_R/W
m·V{y·
SUBSYQ;
CD_RST
P/UP
BUSY; CD_16M
LD
CD_DIN_DOUT
PD
M
USB1
IC407 BU9543KV RF+ SERVO DSP
3-46
SDOUT1
SW2 ·
IC701 AMP IC TAS5631
F/L
IC702 AMP IC TAS5631
R/L
IC702 AMP IC TAS5631
SW1
F/R
R/R
SW2
300Wx2
150Wx2
300Wx2
2. SMPS BLOCK DIAGRAM ZY } mk
MAIN TRANS
STR-A6252 for Main Power
} rr
XY} vw htwVmhu
Rectifier Circuit (Bridge, CAPACITOR)
pw vkGVG|ziGVGtwlnVGkjkj \U]}
} mk [U\} |Tj
ZU^}h
w Tj{ys Filter Section (Varistor, Resistor, Line Filter Thermistor)
Snubber FL FR
[_} AMP Power &
AC
UC3844 for Main Power
Digital Power AMP
TRANS FET
MAIN & AMP
SW C SL SR
3-47
3-48
ms ORVTP
3. POWER BLOCK DIAGRAM
SMPS
IC605 MIC AMP S4308
IC201 IPOD AMP NJM2794
SPEANA Q601
IC701/702/703 POW AMP TAS5631
+12V
IC101 U_COM
IC103 PWR SENS DIG301 VFD
IC102 RESET KIA7027
IC603 ADC(MIC) AK5358A
IC505 278P33 IC203 IPOD PWR LM39102D
TU101 TUNER YST996
IC602 PWM PS9850
RMC301 REMOCON
IC507 74AHC244 IC506 CP2.0B
D302
IC401 TJ3965D
WOOFER EXTENDERx2
+1.8V
Q405
+3.3V IC5058 TJ3965D
IC407 RF BU9543KV
+3.3V(CD) +3.3V(CD)
Q406
VCC33 +3.3V(RF) +5V
IC3U01 USB PWR LM39102D
+48V
IC503 FLASH MX25L8005
IC502 SDRAM EM638165
D301
IC601 LDO TJ3965D
FL路
FAN Q701
IC501 MCS MLC9800
D102 D104 D101
+5.6V
VOLUME LED 9EA
VCC12
12VA
IC100 EEPROM 24CS16 +3.7VA
FRONT LED 9EA x 2
IC509 KIA1112F
+3.3V(USB)
IC604 DRV603 ADC IC202 CS5346
DIG301 IC701/702/703 AUDIO AMP TAS5631
+3.3V(ADC)
+3.3V(BEAT)
IC408 MOTOR AM3053S
IC806 74AHC244
IC406 MOTOR S8082
IC807 74AHC244
IC504 USB HUB USB2512A IC801 BEAT BOX FS-503B
VCC12A
IC803 BOOT FLASH 16MB IC805 BEAT SOURCE FLASH 32MB
3-49
3-50
IC802 TJ3965D
CIRCUIT DIAGRAMS
1. SMPS CIRCUIT DIAGRAM IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
12
COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.
NOTE : 1. Shaded( ) parts are critical for safety. Replace only with specified part number. 2. Voltages are DC-measured with a digital voltmeter during Play mode.
11
10
9
8
7
6
5
4
3
2
Warning Parts that are shaded are critical with respect to risk of fire or electrical shock.
CAUTION: Danger if fuse is incorrectly replaced. Replace only with the type identical to fuse rating and(or) model name described in main label.
1
A
B
C
SMPS EBY32630704 Rev 2.1 2011.01.25 D
E
F
G
H
I
3-51
J
K
L
3-52
M
N
O
P
Q
R
S
T
2. MICOM CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 µ-COM EBY60990001(#1) Rev 7.2 2011.01.25 A
B
C
D
E
F
G
H
I
3-53
J
K
L
3-54
M
N
O
P
Q
R
S
T
3. PWM CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
3-55
J
K
L
3-56
M
N
O
P
Q
R
PWM EBY60990001(#2) Rev 7.2 2011.01.25 S T
4. AMP CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 AMP EBY60990001(#3) Rev 7.2 2011.01.25 A
B
C
D
E
F
G
H
I
3-57
J
K
L
3-58
M
N
O
P
Q
R
S
T
5. DSP CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 DSP EBY60990001(#4) Rev 7.2 2011.01.25 A
B
C
D
E
F
G
H
I
3-59
J
K
L
3-60
M
N
O
P
Q
R
S
T
6. RF SERVO CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 RF SERVO EBY60990001(#5) Rev 7.2 2011.01.25 A
B
C
D
E
F
G
H
I
3-61
J
K
L
3-62
M
N
O
P
Q
R
S
T
7. ADC CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 ADC EBY60990001(#6) Rev 7.2 2011.01.25 A
B
C
D
E
F
G
H
I
3-63
J
K
L
3-64
M
N
O
P
Q
R
S
T
8. BEAT BOX CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 BEAT BOX EBY60990001(#7) Rev 7.2 2011.01.25 A
B
C
D
E
F
G
H
I
3-65
J
K
L
3-66
M
N
O
P
Q
R
S
T
9. VFD CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 VFD EBY61172601 Rev 2.1 2011.01.25 A
B
C
D
E
F
G
H
I
3-67
J
K
L
3-68
M
N
O
P
Q
R
S
T
10. VOLUME CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
3-69
J
K
L
3-70
M
N
O
P
Q
R
S
VOLUME EBY61172701 Rev 2.1 2011.01.25 T
11. USB CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 USB EBY61172801 Rev 2.3 2011.01.25 A
B
C
D
E
F
G
H
I
3-71
J
K
L
3-72
M
N
O
P
Q
R
S
T
12. IPOD CIRCUIT DIAGRAM 12
11
10
9
8
7
6
5
4
3
2
1 IPOD EBY60990101 Rev 3.2 2010.11.09 A
B
C
D
E
F
G
H
I
3-73
J
K
L
3-74
M
N
O
P
Q
R
S
T
13. MIC CIRCUIT DIAGRAM (OPTIONAL PART) 12
11
10
9
8
7
6
5
4
3
2
1 MIC EBY60990701 Rev 3.2 2010.11.09 A
B
C
D
E
F
G
H
I
3-75
J
K
L
3-76
M
N
O
P
Q
R
S
T
CIRCUIT VOLTAGE CHART 1. HOW TO CHECK THE VOLTAGE
Turn the SMPS board over with cable connected and check the voltage.
2. MAJOR ICs No.
1
Location / Description
IC501 MLC9800
No.
Location / Description
Supply Voltage Pin No.
Source
IC701 TAS5631
PVDD_X
48V
25~52.5V
47.7V
8
GVDD_X
12V
10.8~13.2V
11.91V
VDD
12V
10.8~13.2V
11.91V
9
IC502 EM638165TS-6G
VDD,VDDQ
3.3V
3.0~3.6V
3.27V
10
IC503 M25L1605D2I-12G
VDD
3.3V
4.6V MAX
3.27V
11
IC507 TC74VHC244FT
VCC
3.3V
2.0~5.5V
3.27V
12
IC506 CP Chip
VCC
3.3V
7.0V MAX
3.27V
13
IC504 USB2512A
VDD33
3.3V
3.0~3.6V
3.26V
14
IC505 278R33
VOUT
3.3V
-
3.28V
VDD
3.3V
2.7~3.6V
3.27V
1.5V
1.4~1.65V
1.58V
IC408 S3053
VCC1, VCC2
5V
4.3~13.2V
5.10V
IC406 S8082
SVCC, PVCC
5V
4.3~13.2V
5.10V
VA
5V
4.75~5.25V
5.11V
Source
Spec / Rating
Measured voltage
15
IC407 BU9543KV
13,47,94-VDD12
1.2V
1.08~1.32V
1.18V
16
30,51,84,113IOVDD33
3.3V
3.0~3.6V
3.26V
17
120-PLL1VDD12
1.2V
1.08~1.32V
1.18V
124-PLL2VDD12
1.2V
1.08~1.32V
1.18V
122-PLL3VDD12
1.2V
1.08~1.32V
1.18V
115-USBVDD33
3.3V
3.0~3.6V
3.26V
14,48,95-VSS12
3.3V
3.0~3.6V
3.26V
3,52,85,109,114IOVSS33
1.2V
1.08~1.32V
1.18V
119-PLL1VSS12
3.3V
3.0~3.6V
3.26V
123-PLL2VSS12
1.2V
1.08~1.32V
1.18V
121-PLL3VSS12
1.2V
1.08~1.32V
1.18V
3-AVSS33
3.3V
3.0~3.6V
3.26V
3.3V
3.0~3.6V
3.26V
Measured voltage
VCORE
Supply Voltage Pin No.
118- USBVSS33
Spec / Rating
VD
3.3V
3.13~3.47V
3.27V
VLS
3.3V
3.13~3.47V
3.27V
VLC
3.3V
3.13~3.47V
3.27V
VOUT
5V
-
5.12V
IC201 NJM2794RB2
VCC
12V
4.3~13V
11.93V
21
IC204 LM39102D
VOUT
5V
-
5.13V
22
IC801 FS-503B
VDDK
1.2V
1.4V MAX
1.19V
VDDE
3.3V
4.0V MAX
3.27V
VDD
3.3V
4.6V MAX
3.27V
18
IC202 CS5346
19
IC203 LM39102D
20
2
IC101 LC87F085NC8A
VDD1,VDD2, VDD3,VDD4
3.3V
2.8~5.5V
3.37V
23
IC803 M25L1605D2I-12G
3
IC100 S-24CS16
VCC
3.3V
2.7~5.5V
3.37V
24
IC806 TC74VHC244FT
VCC
3.3V
2.0~5.5V
3.27V
VDD_IO
3.3V
2.97~3.63V
3.31V
VDD_CORE
1.2V
1.08~1.32V
1.25V
25
IC807 M25L1605D2I-12G
VDD
3.3V
4.6V MAX
3.27V
VDD_VIN1
3.3V
2.20~3.30V
3.30V
26
VCC
5V
2.0~5.5V
5.12V
VDD_VIN2
3.3V
2.20~3.30V
3.30V
IC807 TC74VHC244FT
VDD_A
1.2V
1.08~1.32
1.25V
27
IC807 KIA1112F
VOUT
1.2V
-
1.19V
VA
5V
6.0V MAX
5.11V
VD
3.3V
4.6V MAX
3.31V
28
IC301 BU2090
VDD
3.3V
7.0V MAX
3.66V
4
IC602 PS9850
5
IC603 AK5358
6
IC605 S4308
VCC
12V
4.5~12V
11.25V
29
IC302 BU2090
VDD
3.3V
7.0V MAX
3.66V
7
IC604 DRV603
VDD
5V
3~5.5V
5.1V
30
IC3U01 LM3912D
VOUT
5V
-
5.11V
3-77
3-78
3. CAPACITORS ON MAIN BOARD
4. CAPACITORS ON SMPS BOARD
No.
Location
Value Capacitor (uF)
Voltage Spec.
Measured voltage
01
C111
47uF
16V
3.37V
02
C145
2.2uF
16V
03
C124
1000uF
04
C109
05
100V-10%
240V/50Hz+10%
Measured voltage
Measured voltage
122.3V
190V
315V
123.9V
180.7V
450V
245.9V
370.1V
47uF
50V
18.47V
18.59V
C914
47uF
50V
12.68V
13.8V
C908
47uF
50V
15.34V
15.33V
07
C931
330uF
16V
4.81V
4.8V
08
C932
100uF
50V
31.96V
31.98V
09
C933
1000uF
16V
5.75V
5.75V
10
C935
1000uF
25V
12.63V
12.62V
11
C942
100uF
16V
11.99V
11.98V
12
C953
2200uF
80V
47.9V
48.1V
No.
Location
Value Capacitor (uF)
Voltage Spec.
3.37V
01
C903
1000uF
315V
6.3V
3.38V
02
C904
1000uF
1000uF
6.3V
3.38V
03
C905
47uF
C808
47uF
16V
1.19V
04
C912
06
C529
100uF
16V
3.30V
07
C530
470uF
16V
5.66V
05
08
C531
470uF
16V
5.65V
06
09
C533
470uF
16V
3.28V
10
C706
10uF
16V
11.92V
11
C746
10u
16V
11.92V
12
C786
10uF
16V
11.92V
13
C713
470uF
100V
47.7V
14
C734
470uF
100V
47.7V
15
C753
470uF
100V
47.7V
16
C774
470uF
100V
47.7V
17
C793
470uF
100V
47.7V
18
C784
470uF
100V
47.7V
19
C527
47uF
16V
1.19V
20
C550
47uF
16V
1.19V
21
C570
10uF
16V
3.27V
22
C525
47uF
16V
3.27V
23
C482
100uF
16V
1.65V
24
C462
47uF
16V
3.27V
25
C467
3.3uF
50V
1.65V
26
C492
47uF
16V
3.27V
27
C405
470u
16V
1.57V
28
C4H6
100uF
6.3V
1.57V
29
C406
100uF
6.3V
3.27V
30
C485
220uF
16V
5.11V
31
C221
100uF
16V
3.28V
32
C235
10uF
16V
5.7V
33
C231
47uF
16V
5.1V
34
C221
100uF
16V
5.1V
35
C210
10uF
16V
2.55V
36
C660
47uF
16V
3.31V
37
C657
47uF
16V
5.12V
38
C655
10uF
16V
2.56V
39
C681
1uF
50V
.3V
40
C679
100uF
16V
11.25V
41
C676
22uF
16V
1.96V
42
C122
100uF
16V
3.31V
43
C620
100uF
6.3V
1.25V
44
C621
1000uF
6.3V
3.30V
45
C682
1000uF
6.3V
3.30V
46
C601
100uF
16V
3.31V
47
C3U25
100uF
16V
5.1V
3-79
3-80
PRINTED CIRCUIT BOARD DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW)
3-81
3-82
MAIN P.C.BOARD (BOTTOM VIEW)
3-83
3-84
2. SMPS P.C.BOARD NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock.
3-85
3-86
3. VFD P.C.BOARD (BOTTOM VIEW)
EAX64004201 Rev 2.3
3-87
3-88
4. VOLUME P.C.BOARD
3-89
3-90
5. USB P.C.BOARD (TOP VIEW)
(BOTTOM VIEW)
6. IPOD P.C.BOARD (TOP VIEW)
(BOTTOM VIEW)
7. MIC P.C.BOARD (OPTIONAL PART)
3-91
3-92
MEMO
MEMO
3-93
3-94