HP LaserJet Pro M177 Series color toner cartridges

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Mike Josiah Remanufacturing the HP LaserJet Pro M177 Series color toner cartridges In December 2013, Hewlett Packard released the LaserJet Pro M177 series of color laser printers. The HP CP1025 series of laser printers are based on a 17 ppm black and 4ppm color, 600 x 600dpi (2400 with Ret)engine.

These cartridges and the printers take a page from the old HP color LaserJet 4500 and the more recent CP-1025 machines.

The printer is a carousel type with a central drum unit. The toner cartridges just have the toner and developer rollers. The drum and waste are in a separate cartridge. See Figure A. This diagram shows the basic parts layout and lists what each of the parts are.

The cartridges for this printer are rated for 1000 pages color and 1200 pages black. These cartridges also have a series part number and a specific cartridge part number. The part numbers, Series number and info on them is: • HP 130A Black CE350A 1300 pages $54.99 • HP 130A Cyan CE351A 1000 pages $57.99 • HP 130A Magenta CE353A 1000 pages $57.99 • HP 130A Yellow CE352A 1000 pages $57.99 • HP 126A Drum Unit CE314A 14k pages black, 7k color $79.99

▲ Figure B Issue48|www.iRecyclingTimes.com

(Pricing as of January 2014) The cartridges seen so far also do not use an Air Bag type of insert in the box; they use a cardboard fold around type.

See Figure B They do however, have a developer roller cover. See Figure C The only machine released so far in this series is the Pro MFP M177fw but the Pro MFP M176 is to follow.

The M177 series is very closely based on the Cp-1025 series. Figures D though show the physical differences between the two cartridges. By the time you read this, conversion kits should be available.

These are very simple, easy cartridges to remanufacture. While the OEM costs are low, they will be simple enough and fast enough to make doing them worthwhile.

Cartridge troubleshooting as well as running test pages, cleaning pages and some simple printer troubleshooting will be covered at the end of this article.

Supplies required • • • • • • • •

HP M176 dedicated color toner Replacement chip (Dedicated) Developer roller (Optional) Sealing Strip (Optional) Cotton Swabs Isopropyl Alcohol Drum Padding Powder Conductive Grease

▲ Figure A

Tools Required • • • •

Phillips head screw driver.

Small Common screw driver Needle nose pliers Jewelers Screwdriver set

▲ Figure C

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Remove the screw from the inner white end cap.

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Remove the two screws and doctor blade. See Figure 10

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Remove the 2 small gears.

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Clean out all the remaining toner from the hopper and feed roller.

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Remove the black plastic end cap.

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Remove the white seal plug from the chip side of the cartridge.

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With the white plastic handle on top and the label facing you, remove the left side 2 screws and white plastic end cap from the cartridge.

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Fill the hopper with the appropriate color CP1025 dedicated toner.

Remove the White plastic inner end cap.

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If you are using a seal, install it now. Make sure the tail of the seal comes out through the seal plug hole. step >

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Remove the developer roller.

Clean with a lint free cloth and place aside. We do not recommend any chemicals be used to clean this roller. step >

On the gear side of the cartridge, remove the 2 screws from the black plastic end cap. Note the spring loaded drive gear. The spring and drive gear will stay with the end cap when removed, there is no need to remove them separately. step >

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Install the two gears on the developer roller shaft and feed roller shaft.

Install the foam washer onto the feed roller shaft.

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Install the white end cap onto the gear side of the cartridge. Install the screw as shown.

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Slice the top of the chip holder off and replace the chip.

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Install the seal plug. Make sure the fins are on the bottom side and that the plug fits over the seal.

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Install the developer roller cover.

Install the black end cap and two screws. Make sure the drive gears are meshed properly and the spring on the black drive gear is in place.

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Install the developer roller long shaft side to the gear or non chip side of the cartridge.

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Install the doctor blade and two screws. NOTE the Db must be gapped for the cartridge to work properly.

Use either DB shims, or set the gap manually to 1.8mm.

NOTE: The Db gap is set from the back 90 degree edge of the blade not the top or screw side. In other words, the gap is to set the distance of the edge of the Db to the developer roller. NOT the height of the blade.

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Install the opposite side white end cap and 2 screws.

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Repetitive Defect chart OPC Drum:

95mm

ITB drive roller

76mm

Lower Pressure roller:

63mm

Upper Fuser Film:

58mm

Transfer roller:

47mm

PCR:

26mm

Developer roller:

22mm

Running Test Pages As these are MFP machines, it is easiest to just make a copy of a good test page.

However if one is not available test pages can be run from the printer.

Supplies Status Page: • Press the SETUP button

• Open the REPORTS menu • Open the SUPPLIES STATUS menu • Select PRINT SUPPLIES STATUS page • Press OK Running the Cleaning Page

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Press the SETUP button Open the Service menu Select CLEANING PAGE Press OK

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