Reset the count no.replace transfer kit - HP Color Laserjet 3550 Printer

you need to go where it says Service then input that code and scroll to reset the belt. ( this only needs to be reset in Service mode when changing before the counter says to.)

2nd-transfer-roller assembly kit part number: Q3931-67910 needs replaced and life count reset.

This maintenance kit consists of a fuser, pick up rollers, transfer rollers. On this model you can also reset the maintenance count by entering the service mode and sometimes by scrolling down to the config menu until you see resets.

To reset the transfer unit count, do the following:

1. Press the green tick to enter the MENUS.
2. Press the down arrow to highlight CONFIGURE DEVICE.
3. Press green tick to select CONFIGURE DEVICE.
4. Press down arrow to highlight RESETS.
5. Press green tick to select RESETS.
6. Press down arrow to highlight RESET SUPPLIES.
7. Press green tick to select RESET SUPPLIES.
8. Press down arrow to highlight NEW TRANSFER KIT.
9. Press green tick to select NEW TRANSFER KIT.
10. Press down arrow to highlight YES.
11. Press green tick to reset the transfer unit count.

Go to Config by turning off the printer. Then press and hold Select and Return buttons while turning on the printer. Once in Config Menu, choose Reset Maintenance Count.

NOTE: The error indicates that the printer has already printed 300k pages, worn out transfer and charge rollers. You should've replaced the maintenance kit = fuser, charge roll, transfer roll and pick tires. Otherwise, you'll ge having print quality issues.

with the power on, press the down arrow button until the display reads " Configure Device" menu. Press the Select button and using the down arrow button, scroll through this menu until the display reads "Resets" and press the Select Button. Then press the down arrow button again until the screen reads "Reset Supplies" and press Select button. Once you get to this menu this is where you can reset the fuser and the Transfer belt count

Hi schoeller:
Hope this helps.
Replacing the transfer unit when it is not at end-of-life
If you replace the transfer unit when it is not at the end-of-life, for instance if it is defective,
you will need to reset the transfer unit count and then calibrate the printer, through the
control panel.
To reset the transfer unit count, do the following:
1. Press MENU to enter the MENUS.
2. Press down arrow to highlight Configure Device.
3. Press check to select Configure Device.
4. Press down arrow to highlight RESETS.
5. Press check arrow to select RESETS.
6. Press down arrow to highlight RESET SUPPLIES.
7. Press check to select RESET SUPPLIES.
8. Press down arrow to highlight NEW TRANSFER KIT.
9. Press check to select NEW TRANSFER KIT.
10. Press down arrow to highlight YES.
11. Press check to select YES.
To calibrate the printer, do the following:
1. Press MENU to enter the MENUS.
2. Press down arrow to highlight Configure Device.
3. Press check to select Configure Device.
4. Press down arrow to highlight PRINT QUALITY.
5. Press check to select PRINT QUALITY.
6. Press down arrow to highlight CALIBRATE NOW.
7. Press check to select CALIBRATE NOW.
8. Wait for the printer to calibrate.
The transfer unit count is reset and the printer is ready to use.
To reset the fuser count
1. Press MENU to enter the MENUS.
2. Press down arrow to highlight Configure Device.
3. Press check to select Configure Device.
4. Press down arrow to highlight RESETS.
5. Press check to select RESETS.
6. Press down arrow to highlight RESET SUPPLIES.
7. Press check to select RESET SUPPLIES.
8. Press down arrow to highlight NEW FUSER KIT.
9. Press check to select NEW FUSER KIT.
10. Press down arrow to highlight YES.
11. Press check to select YES.
The fuser count is reset and the printer is ready to use.
Hope this helps.

There is a great video that shows step by step how to install the fuser, transfer roller, charge roller, pick up tires and then reset the 80 Scheduled maintenance message

Hit the check botton on the control panel for the printer. Scroll down to "Configure Device" and hit the check button. Scroll down to "Resets" and hit the check button. Scroll to "Reset Supplies" and hit the check button. Scroll to "New Transfer Kit" and hit the check button. Scroll to "yes" and hit the check button.

Hit the return button (next to check button) until back at ready again. Transfer belt count should be reset now.

To make sure, from the info menu, scroll down to "print suply stus page" and hit the check button. Transfer belt should read as 100% now.

DON'T WORRY IF IT TAKES MORE THAN ONCE FOR IT TO TAKE. WE'VE SEEN IT TAKE 2 OR 3 TIMES OF REPEATING THE PROCESS (for no good reason) BEFORE THE MACHINE RESETS THE COUNT.

i got this info from www.partshere.com site - they have most service notes for hp printer and sell most hp parts, including maintenance kits. I hope info. bellow is helpfu.

Replacing the transfer unit
Replace the transfer unit when the printer control panel displays REPLACE TRANSFER
KIT. The image transfer kit contains a replacement transfer unit for this printer.
WARNING! Remove any jewelry or any other metal items from your body to avoid electric shock.

1. Lift the front door handle and pull down the front door.
2. Grasp the right blue handle. Press and hold down the blue button. Slightly lift the right
side of the transfer unit.
3. Grasp the left blue handle and lift to remove the transfer unit from the printer.
4. Using handles, remove the new transfer unit from the bag. Use the blue handles on both
sides to hold the transfer unit.
5. Place the new transfer unit on a flat surface. Remove the orange shipping locks.
6. Guide the left side of the transfer unit into the front door of the printer. Insert the two
pegs on the left side into the holes, and then lower the right side into the door.
7. Make sure that the blue button on the right blue handle has released (popped up). If the
button has not released, grasp the right blue handle and pull the transfer unit toward you.
8. Firmly close the front door.
9. After the front door is closed, after a short time, the printer control panel displays the
message NEW TRANSFER KIT.
10. If the message NEW TRANSFER KIT does not appear, you must reset the transfer unit
count. To reset the transfer unit count, go to step 11.
11. On the printer control panel, press to highlight YES, and then press to select it. The
transfer unit count is reset, the printer recalibrates, and then the printer is ready to use.
NOTE If the old transfer unit was not at end-of-life when it was replaced (for example, if it was
damaged), the transfer unit count must be reset using the printer control panel.
Replacing the transfer unit when it is not at end-of-life
If you replace the transfer unit when it is not at the end-of-life, for instance if it is defective,
you will need to reset the transfer unit count and then calibrate the printer, through the
control panel.


To reset the transfer unit count, do the following:

1. Press MENU to enter the MENUS.
2. Press to highlight Configure Device.
3. Press to select Configure Device.
4. Press to highlight RESETS.
5. Press to select RESETS.
6. Press to highlight RESET SUPPLIES.
7. Press to select RESET SUPPLIES.
8. Press to highlight NEW TRANSFER KIT.
9. Press to select NEW TRANSFER KIT.
10. Press to highlight YES.
11. Press to select YES.
To calibrate the printer, do the following:
1. Press MENU to enter the MENUS.
2. Press to highlight Configure Device.
3. Press to select Configure Device.
4. Press to highlight PRINT QUALITY.
5. Press to select PRINT QUALITY.
6. Press to highlight CALIBRATE NOW.
7. Press to select CALIBRATE NOW.
8. Wait for the printer to calibrate.
The transfer unit count is reset and the printer is ready to use.

see pictures on link:
http://www.partshere.com/Models/Q5990A/CLJ_3550%203500%203700Installation_n_config.PDF