Gem Realpiano Grp800 Service Manual.pdf

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Opening & Keyboard Disassembling Instructions.

Repair Instructions & Timing Table.

Block Diagram, Mains Filter Board Schematics.

Power Supply & Amplifier Board, Phones Board Schematics.

Left & Right Controls Panel Board Schematics.

Left & Right Contacts Board (JPN & PRC Version) Schematics.

CPU & Sound Generator Board Schematic.

Keyboard Interface, In/Out Board & Three Pedals Schematics.

In/Out, CPU & Sound Generator Board Pcb Layouts.

Power Supply & Amplifier , Mains Filter, Phones Board Pcb Layouts.

Left & Right Controls Panel, Keyboard Interface Board Pcb Layouts.

Spare Part List.

Notice Service must be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period will forfeit the right to guarantee.

For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.

To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.

All components marked by this symbol have special safety characteristics, when replacing any of these components use only

service manual

✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

schematic diagrams

CODE: 270309

manufacturer's specified parts.

The (µ) micro symbol of capacitance value is substituted by U. The (Ω) omega symbol of resistance value is substituted by E. The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified.

All resistors are 1/8W unless otherwise specified.

All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V. Soldering point.

Supply voltage.

Logic supply ground.

Test point.

Analog supply ground.

Male connector.

Female connector.

M/F faston connector.

Flag joined with one or more flags with the same signal name inscribed.

Chassis ground.

Earth ground.

ATTENTION Observe precautions when handling electrostatic sensitive devices.

✒ ☎

GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 Phone +39(0)541/959511 - Fax +39(0)541/957404 - Internet: www.generalmusic.com

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HOW TO OPEN THE GRP800 CABINET: A) Lift up the rear cover fixing it with the long pole.

B) Unscrew the 3 screws on front cover rear side, see photo 1.

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C) Slide toward the front cover from rear side and lift up to remove it from piano cabinet, see photo 2.

D) Unscrew the 2+2 screws on sides of front cover upper finish and remove it from piano cabinet, see photo 3.

E) Slide the keyboard cover on toward position and remove it from cabinet, see photo 4.

F) Unscrew the 1+1 screw on sides and the 2+2 screws on centre metal supports, to remove the controls panel (after having disconnected the 2 flat cables on cn2, cn4 connectors, see photo 5, 6.

G) To remove the I/O board group unscrew the 4 fixing screws from inner space of cabinet, see photo 7.

HOW TO INSPECT THE KEYBOARD AND TO REPLACE THE SINGLE KEYS: H) To remove the keyboard group, unscrew the 8+8 fixing screws on frame inner side and on cabinet bottom side, see photo 8, 9; then, lift up the keyboard group (after having disconnected the 2 flat cables from interface board CN2, CN5 connectors) and place it on flat surface to inspect the contacts boards, hammers, frame and the 88 keys.

I) To inspect the keyboard contacts pcb and rubber strips need to remove the keys and hammers from metal frame as follows: L) To remove/replace the white & black keys, bend the key plastic pole on fulcrum and push the key on back arrow direction, then lift up it from metal frame as shown on photo 10.

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M) To remove the hammers, push the plastic retention under fulcrum and lift up them from metal frame as shown on photo 11.

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GRP800 REPAIR INSTRUCTIONS This model doesn't provide an autotest procedure, then in case of electr. fault we suggest to proceed on its repairing as follows: [1] Switch ON the Piano and check if the led on cabinet is lighted and the dot digit leds are lighted in sequence (three times) before to visualize 120 value on digit leds.

[2] Then, after having opened the GRP800 cabinet, check the presence of supply voltages on power board ass.y (+5V, +/-12V, and +/-20Vcc for power amplifiers TDA 7296].

[3] POWER ON/OFF, MASTER RESET, MUTE TIMING check Using dual channel oscilloscope, try to visualise +5V Power Supply, VOK, Reset , Mute, OE signals timing during GRP800 POWER ON, as by timing 1; Starting from the POWER ON event the GRP800 remains in Reset condition until the +5V Supply rises 4.75V value on IC17 pin2 (MAX709) setting the active VOK (after 200ms) and Reset controls; the VOK and Reset signal are connected to pin 209 and to pin 206 of DRAKE Chip (IC9); the RST delay should be >60uS refer to VOK rise time . The Mute signal is controlled by GRP800 O.S., after the finish of start-up phase, it actives the analogue signals on IN/OUT's plugs and on speakers, through RL2 & RL1 relais of 731083 power supply board.

The OE signal is generated by hardware circuit on 810712 pcb.a as by specified on timing 1.

[4] MAIN (CPU) BOARD ASS.Y CHECK The GRP800 Digital Piano provides a main (CPU 761300) board ass.y that requires a specific knowledge of DRAKE (Dsp Risc Advanced Keyboard Engine) custom chip, no easy to extend and to check outside of GM factory; so, we suggest the replacement of main board when the GRP800 doesn't work at all or work partially on sounds generation and on keys & controls playng. In any case the following informations can be useful to locate a specific problem on main board, before to replace it: [4.a] MASTER & BIT CLOCK The Master clock (MCLK) of main board is generated on DRAKE chip (pin 160-161) with XT1 quartz oscillator (fo =11.2896MHz)that you can check by oscilloscope on pin 2 IC19 as by fig. 1: The Bit Clock (BCLK) of main board is generated inside DRAKE chip (pin 230) dividing 4 times the MCLK; its frequency is: =2.8224MHz that you can check by oscilloscope on pin 26 IC19 as by fig. 2:

[4.b] CONTROLS PANEL BUS TIMING It is generated by DRAKE chip (IC9) through the GRP800 O.S.; the relative signals can be checked by oscilloscope as shown on timing 2. (for the read of control panel button swt's) and on timing 3 (for the write of control panel leds).

[4.c] CPU-KEYBOARD INTERFACE TIMING It is generated by DRAKE chip (IC9) through the GRP800 O.S.; the relative signals can be checked by oscilloscope as shown on timing 4.

[4.d] DRAKE - DAC SERIAL BUS TIMING : It is generated by DRAKE chip (IC9) through the GRP800 O.S.; the relative signals for the D-Sigma stereo D/A converter can be checked by oscilloscope as shown by timing 5.

[4.e] If the previous checks on main board are OK, the GRP800 has to generate sounds; to verify this condition, press the DEMO button to active the musical sequence with PRESET leds flashing, etc. Now a sound pattern sequence should be played by CPU board, in line with the O.S. release installed; in absence of sound from speaker verify with oscilloscope the presence of the audio signal on CN7 connector, pin 14, 16. At last try to reload the O.S. on Main board as by following instruction.

[5] OPERATING SYSTEM UPDATE The O.S. of main board is preload into (IC2) NAND FLASH Memory from GM factory; the 256Kbit NAND FLASH Memory is formatted and written with O.S. pattern using PC system with RS232 serial port and hardware interface kit.The update of O.S. must be taken out from qualified Personal; before to make it please check the current O.S. installed by pressing the FUNCTIONS and TOUCH button at same time to visualize O.S. release on led digits. The are two possibility to update the O.S. pattern of GRP800: the first, without open the instrument (to update the upgraded O.S. release), using the computer RS232 port on I/O box with proper serial cable and PC tools: the second by opening the GRP800 cabinet (to fully reprogram the OS release) and connecting the serial cable with proper interface module to CPU board CN1; it requires also the J1 Jumper shifting from E2 to UART position on CPU board; to execute carefully these operations, please refer to the separate document O.S. update installation instructions procedure.

[6] FLASH MEMORY RESET TO FACTORY SET-UP To active the factory reset with OS release 1.03, switch ON the GRP800 with SOFT & SOSTENUTO pedal pressed until the 3 digit leds visualize 120 value; from OS release 1.05 switch ON the GRP800 only, then press at same time the following 8 PRESET buttons: PIANO1, PIANO2, RHOD1, RHOD2, STRINGS1, STRINGS2, PAD1, PAD2.

[7] GRP800 MODEL SETTING To active this function on common RP/GRP/PRP OS releases, switch ON the GRP800, then press DEMO button and after press DEMO again with FUNCTION button at same time to visualize the setted release; to change the setted release to other, press the DATA< button to select GRP; switch OFF the GRP800 to active the new setted release.

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761300 CPU & SOUND GENERATOR BOARD

731085 IN/OUT BOARD

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731083 POWER SUPPLY & AMPLIFIER BOARD

768197 MAINS FILTER BOARD

731086 PHONES BOARD

761226 KEYBOARD INTERFACE BOARD

810716 ON/OFF LED BOARD

810712 RIGHT CONTROLS PANEL BOARD

810715 LEFT CONTROLS PANEL BOARD

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SPARE PART LIST LEGEND Abbreviation explanation: (EU) =European Version (230Vac) (US) =U.S. Version (115Vac) (I) =Italian Version (F) =French Version (D) =German Version (UK) =English Version (HPE) =High Polished Ebony (HPW) =High Polished White (HPM) =High Polished Mahogany (HPC) =High Polished Cherry CODE

DESCRIPTION

Accessories 271423 271438 130274 130276 970486 970487 970488 970489 XNG265092 XNG265093 XNG265094 XNG265095 XNG265096 XNG265097 XNG265098 XNG265099 XNG525000

Owner’s Manual (UK-I-F-D) Music Book Mains Cable 10A (EU) Mains Cable 10A (US) Pianist’s Bench (HPE) Pianist’s Bench (HPW) Pianist’s Bench (HPM) Pianist’s Bench (HPC) * Legs Bench (HPE) * Legs Bench (HPW) * Legs Bench (HPM) * Legs Bench (HPC) * Seat Bench (HPE) * Seat Bench (HPW) * Seat Bench (HPM) * Seat Bench (HPC) * Bench Screws Kit

XNG805000 XNG805001 XNG805002 XNG805003 XNG265017 XNG265065 XNG265066 XNG265067 XNG175012 XNG725001 XNG725003 XNG725004 XNG725005 XNG725002 XNG265026 XNG265083 XNG265084 XNG265085 XNG265025 XNG265080 XNG265081 XNG265082 XNG265016 XNG265062 XNG265063 XNG265064 XNG265015 XNG265059 XNG265060 XNG265061 XNG265013 XNG265053 XNG265054 XNG265055 XNG175002

Cabinet Legs Assembly (HPE) Cabinet Legs Assembly (HPW) Cabinet Legs Assembly (HPM) Cabinet Legs Assembly (HPC) * Cabinet Legs (HPE) * Cabinet Legs (HPW) * Cabinet Legs (HPM) * Cabinet Legs (HPC) * Brassed Revolving Wheel Complete Pedals Group (HPE) Complete Pedals Group (HPW) Complete Pedals Group (HPM) Complete Pedals Group (HPC) * Brass Triple Pedal Assembly * Base for Pedals Group (HPE) * Base for Pedals Group (HPW) * Base for Pedals Group (HPM) * Base for Pedals Group (HPC) * Three Pedals Chassis (HPE) * Three Pedals Chassis (HPW) * Three Pedals Chassis (HPM) * Three Pedals Chassis (HPC) * Pedals Column Cover (HPE) * Pedals Column Cover (HPW) * Pedals Column Cover (HPM) * Pedals Column Cover (HPC) * Pedals Column for Wire (HPE) * Pedals Column for Wire (HPW) * Pedals Column for Wire (HPM) * Pedals Column for Wire (HPC) * Pedals Column (HPE) * Pedals Column (HPW) * Pedals Column (HPM) * Pedals Column (HPC) * Brass Stay for Pedals

XNG715002 XNG715009 XNG715010 XNG715011 XNG665001 XNG265005 XNG265035 XNG265036 XNG265037 XNG715001 XNG715006 XNG715007 XNG715008

Grand Cabinet with Accessory (HPE) Grand Cabinet with Accessory (HPW) Grand Cabinet with Accessory (HPM) Grand Cabinet with Accessory (HPC) * Speakers Protection Grid * Keyboard Cross Bar (HPE) * Keyboard Cross Bar (HPW) * Keyboard Cross Bar (HPM) * Keyboard Cross Bar (HPC) Cabinet Front Cover Assembly (HPE) Cabinet Front Cover Assembly (HPW) Cabinet Front Cover Assembly (HPM) Cabinet Front Cover Assembly (HPC)

Stand & Pedal Assembly

Cabinet Assembly

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XNG265012 XNG265050 XNG265051 XNG265052 XNG265100 XNG265089 XNG265090 XNG265091 210139 170612 XNG715000 XNG715003 XNG715004 XNG715005 XNG265009 XNG265047 XNG265048 XNG265049 171944 XNG265027 XNG265086 XNG265087 XNG265088 XNG265007 XNG265041 XNG265042 XNG265043 XNG265023 XNG265074 XNG265075 XNG265076 XNG265022 XNG265071 XNG265072 XNG265073 XNG265021 XNG265068 XNG265069 XNG265070 XNG265014 XNG265056 XNG265057 XNG265058 XNG265008 XNG265044 XNG265045 XNG265046 220120 220087

Wooden Front Cover (HPE) Wooden Front Cover (HPW) Wooden Front Cover (HPM) Wooden Front Cover (HPC) * Music Stand (HPE) * Music Stand (HPW) * Music Stand (HPM) * Music Stand (HPC) * Alcantara Black Music Holder Cloth * Music Stand Hinge Keyboard Cover Assembly (HPE) Keyboard Cover Assembly (HPW) Keyboard Cover Assembly (HPM) Keyboard Cover Assembly (HPC) * Wooden Keyboard Cover (HPE) * Wooden Keyboard Cover (HPW) * Wooden Keyboard Cover (HPM) * Wooden Keyboard Cover (HPC) * Keyboard Cover Black Alluminium Handle Cabinet Rear Cover Long Pole (HPE) Cabinet Rear Cover Long Pole (HPW) Cabinet Rear Cover Long Pole (HPM) Cabinet Rear Cover Long Pole (HPC) Cabinet Rear Cover Short Pole (HPE) Cabinet Rear Cover Short Pole (HPW) Cabinet Rear Cover Short Pole (HPM) Cabinet Rear Cover Short Pole (HPC) Right Wooden Cheek Block (HPE) Right Wooden Cheek Block (HPW) Right Wooden Cheek Block (HPM) Right Wooden Cheek Block (HPC) Left Wooden Cheek Block (HPE) Left Wooden Cheek Block (HPW) Left Wooden Cheek Block (HPM) Left Wooden Cheek Block (HPC) Keyboard Cover Side Guide (HPE) Keyboard Cover Side Guide (HPW) Keyboard Cover Side Guide (HPM) Keyboard Cover Side Guide (HPC) Cabinet Front Cover Upper Finish (HPE) Cabinet Front Cover Upper Finish (HPW) Cabinet Front Cover Upper Finish (HPM) Cabinet Front Cover Upper Finish (HPC) Cabinet Rear Cover (HPE) Cabinet Rear Cover (HPW) Cabinet Rear Cover (HPM) Cabinet Rear Cover (HPC) 6” Full-range 20W 8E Speaker 8E 30W Tweeter Speaker

Mains & Tranformer Assembly 770949 Mains Internal Cables Assembly 110614 Power Plug-In 110320 * Power Switch XNG345005 * Black Switch Plastic Knob XNG345006 * White Switch Plastic Knob XNG665004 * Power-On/Off Painted Brass Plate 768197 Mains Filter Without Fuse Board Ass.y (Pcb#310642) 230568 * 10mH 250Vac 1A AC Line EMI Coil “Siemens” 140010 * 3 Contacts P=10 Vert Terminal Block 020493 * 100n 250Vac MKP EMI Capacitor “Siemens” 010545 * 4n7 250V Ceramic Capacitor (Iec-Ul-Csa) 230136 Transformer 230Vac 130W (EU) 230137 Transformer 115Vac 130W (US)

On/Off Led Board Group 810716 080752

* * * * * * * * * * * *

652854 731086 140217 140207

Phones Board Support * Phones Board Assembly (PCB#310733) ** Jack Stereo Slim Horizontal Socket ** Jack Horizontal F Socket (with dual switch)

T5A Fuse 5x20mm (EU) T1.6A Fuse 5x20mm (EU) T5A Fuse 6.3x32mm (US) T1.6A Fuse 6.3x32mm (US) Power Ampl.& Supply Board Ass.y (PCB#310728/1) * TO3P/TO218 Mica Washer * TO220 Mica Washer * TO220 Insulated Bush * STK Amplifier Black Zinc Plated Heatsink * 2 Contacts P=10 Vert Terminal Block * 3 Contacts P=10 Vert Terminal Block * Relay 12V / 2 Switch 1A 250V * Relay 12V / 2 Switch 5A 250V * Universal P.C.B.Fuse Clip 10A 250V

TDA7296 60W Power Amplifier MC33078 Dual LN Operational Amplifier 7805 +5V 1A Voltage Regulator 7812 +12V 1A Voltage Regulator 7912 -12V 1A Voltage Regulator BC550C TO92 LN Npn Transistor KBL02 4A 200V Rectifier Diode Bridge W02M 1.5A Rectifier Diodes Bridge 1N4002 1A 100V Rectifier Diode 1N4148 100mA 75V Signal Diode 2200u 25V 20% Vert Electrolytic Capacitor 4700u 35v 20% Snap-In Electrolytic Capacitor

XNG725000 XNG815000 XNG815001 XNG815002 XNG815003 XNG345007 XNG345008 XNG085000 XNG155000 XNG155001 XNG155002 XNG155003 XNG155004 XNG155005 XNG155006 XNG155007 XNG155008 XNG155009

Keyboard Assembly 88 Note (JPN) 16 Note Left Contacts Board (Denon-JPN-KEYS16PCB) 24 Note Left-Centre Contacts Board (Denon-JPN-KEYS24PCB-1) 24 Note Right-Centre Contacts Board (Denon-JPN-KEYS24PCB-2) 24 Note Right Contacts Board (Denon-JPN-KEYS24PCB-3) * 4Dual Contacts Rubber Strip for Denon (JPN) Keyboard * 12Dual Contacts Rubber Strip for Denon (JPN) Keyboard * Dual 1n4148 100mA 75V Smd Signal Diode with Comm. Cathode Denon Keyboard (JPN) C Key Denon Keyboard (JPN) D Key Denon Keyboard (JPN) E Key Denon Keyboard (JPN) F Key Denon Keyboard (JPN) G Key Denon Keyboard (JPN) A Key Denon Keyboard (JPN) B Key Denon Keyboard (JPN) Sharp Key Denon Keyboard (JPN) First A Key Denon Keyboard (JPN) Last C Key

Phones Board Assembly

810715 140529 103032 103028 080760 080723 731087 070551

Left Control Panel Assembly (Pcb#310735) * Touch Switch 12V 50mA 0.25mm * 74HC165D SOIC 8bit P To S Shift Register * 74HC4094M1R SOIC 8bit Shift/Latch Register * SA05-11EWA Kingb. 7 Segments Red Display * Led 3mm High Efficiency Tinted Red * Volume Board Assembly (Pcb#310743) ** 10K Linear 30mm Slider Potentiometer

810712 140529 103032 103028 103007 103000 081000 080747 080723

Right Control Panel Assembly (Pcb#310734) * Touch Switch 12V 50mA 0.25mm * 74HC165D SOIC 8bit P To S Shift Register * 74HC4094M1R SOIC 8bit Shift/Latch Register * 74HC74D SOIC Dual Flip-Flop * 74HC14D Soic Hex Inverter Schmitt Trigger * PMLL4148 Smd 100mA 75V Signal Diode * 2mm Dot Diffused Red Led * Led 3mm High Efficiency Tinted Red

761300 106009 106003 106001 105015 105012 104072 104066 104065 104052 103511 103501 103066 103052 103048 103047 103012 081000 055614 055612 055572 055570 055562 055552 010728

CPU Board Assembly (PCB#310726) * LM1117DTX-ADJ Voltage Reg.0,8A TO252 * MAX709 Power Monitor With Reset * MC33078P SOIC Dual Low Noise Op. Amp. * EPM3064ALC 44-4 EE Fpga * DRAKE - Cpu & Dsp Processor * TC58256AFT 3v3 TSOP 256MBit Nand Flash * K4S281632C-TC1L 128Mbitx16 Sync Dram 100MHz * IS41LV16100/S50T 16Mbitx16 Edo Dram * AT24C64 64Kbit Serial Access EEProm * I.C. 74HCT4051 8CH Analog Mux/Demux * 74HCT04 SOIC Hex Inverter * TLC548CD SOIC 8-bit A/D Converter * AD1854 Stereo 24bit Dac * 74LVC32D SOIC Quad 2-input Or Gate * 74LVC04 SOIC Hex Inverter * 74HC125D SOIC Quad Tri-State Buffer * PMLL4148 Smd 100mA 75V Signal Diode * 56K 1/16W 1% Smd Resistor 0603 * 47K 1/16W 1% Smd Resistor 0603 * 1K0 1/16w 1% Smd Resistor 0603 * 820E 1/16w 1% Smd Resistor 0603 * 390E 1/16w 1% Smd Resistor 0603 * 150E 1/16w 1% Smd Resistor 0603 * 11.2896MHz Quartz Resonator

653440 731085 230569 230527 140247 140217 140216 140212 100734 100602 100600 100035 080103 010740

Outputs In/Out * * * * * * * * * * * *

770963 841397 841396 841395 841356 841355 841287 841211 841198 841196 841046 840776 840749 840560 770945 030171

Cables Assembly * 20wires 25cm Mico-Match/Latch Flat Cable * Molex 5264 9 Wires AWG20 Cable L=50CM * Wire Jumper AWG18 Y/G L=45CM (Eyel/Fast) * 16 Wires 20cm Latch Flat Cable with Ferrite * Molex 5264 4 Wires AWG20 Cable L=90CM * 20 Wires 55cm Latch Flat Cable * 15cm Yel/Grn Solder/Faston Wire * Molex 5195 6Wires AWG18 Cable L=7.5CM * Wire Jumper AWG18 Y/G L=12.5CM (Eyel/Fast) * 14 Wires 17.5cm Latch Flat Cable * 2 Wires 25cm Crimp Terminal Cable * 20wires 35cm Latch Flat Cable * 14 Wires 20cm Latch Flat Cable Speakers Cables Assembly * 4u7 63V 20% Axial Electrolytic Bipolar Capacitor

Right Control Panel Assembly

Denon 88 Note Keyboard Assembly (JPN Version)

Denon 88 Note Keyboard Assembly (PRC Version) MDL725007 MDL815032 MDL815033 MDL345147 MDL345148 080103 MDL155010 MDL155011 MDL155012 MDL155013 MDL155014 MDL155015 MDL155016 MDL155017 MDL155018 MDL155019

Keyboard Assembly 88 Note (PRC) 40 Note Left Contacts Board (Denon-PRC-LX_KEY-V02) 48 Note Right Contacts Board (Denon-PRC-RX_KEY-V02) * 4Dual Contacts Rubber Strip for Denon (PRC) Keyboard * 12Dual Contacts Rubber Strip for Denon (PRC) Keyboard * 1N4148 100mA 75V Signal Diode Denon Keyboard (PRC) C Key Denon Keyboard (PRC) D Key Denon Keyboard (PRC) E Key Denon Keyboard (PRC) F Key Denon Keyboard (PRC) G Key Denon Keyboard (PRC) A Key Denon Keyboard (PRC) B Key Denon Keyboard (PRC) Sharp Key Denon Keyboard (PRC) First A Key Denon Keyboard (PRC) Last C Key

761226 103015 103000 091001 081000

Keyboard Interface Board Assembly (Pcb#310697) * 74HC164D SOIC 8bit S To P Shift Register * 74HC14D Soic Hex Inverter Schmitt Trigger * BC857B/C TO236 Smd Pnp Transistor (9BB/C-3F/G) * PMLL4148 Smd 100mA 75V Signal Diode

Keyboard Interface Board Assembly

On/Off Led Board Assembly (Pcb#310744) * Led 3mm Red

Power Amplifier & Supply Board Assembly 110020 110012 110021 110055 731083 340154 340079 340078 170717 140085 140010 110305 110304 110119

100969 100919 100059 100045 100043 090183 080605 080168 080156 080103 030805 030554

Controls Panel Group Assembly XNG825000 XNG825001 XNG665002 XNG665003 340512 340820 340976 653641 653640 653531 340983 340979 340972 210258

Controls Controls * * * * * * * * * * * *

Panel Group Assembly (Black) Panel Group Assembly (White) Painted Front Panel(Black) Painted Front Panel(White) Slider Potentiometer Guide (Black) Slider Potentiometer Knob (Black) Red Display Cover “>-Stop-Track1-Track2” Silkscreened Quad Actuator “REC” Silkscreened Quad Actutor “< >” Silkscreened Dual Actuator 7x13 Dark Gray Quad Actuator 7x13 Dark Gray Quad Actuator with Gem 9.6x13 Dark Gray Quad Actuator with Gem Slider Potentiometer Felt

Left Control Panel Assembly

CPU Board Assembly

In/Out Board Assembly Panel Board Assembly (PCB#310749) FL5R200PNT EMI Coil For Signal BL02RN2-R62 EMI Coil For Signal 8 Poles Mini Din Female Socket Jack Stereo Slim Horizontal Socket 6 Poles Din Horizontal Female Socket 5 Poles Din Horizontal Female Socket MAX202E RS232 Drivers/Receiver 74HC04 Hex Inverter 74HC00 Quad 2-Input Nand Gate 6N138 Optocoupler 1N4148 100mA 75V Signal Diode 1MHz Ceramic Resonator

Wiring Connections

Note: All dimensions are in mm unless otherwise specified.

The screw description is defined as follows: type of screw + diameter + X + length + type of head where type of screw is one of these: M = Metric thread B = Self-tapping screw for metal WL = Self-tapping screw for wood and type of head is one of these: tc = cylinder Phillips head ts = flared Phillips head tt = rounded Phillips head te = hexagonal nut head tsp = flat flared Phillips head tce = cylinder Allen hexagonal head The washer description is defined as follow: hole diameter + X + external diameter + X + thick Each spare part is single quantity unless otherwise specified.

Asterisk prefix explanation: Omitted = First level spare part. (*) One asterisk = Second level, part of previous listed first level part. (**) Two asterisk = Third level, part of previous listed second level part. (***) Three asterisk = ............

Any request for not above mentioned part must encompass specific description including: 1) Model name, 2) 3) 4) 5)

Section name, Module code, Reference name, Quantity number.

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