Hp color laserjet 3550 - error message "cartridges not engaged"

turn it off, and unplug from power. Then try it.

10.92.00 The Black print cartridge are not engaged correctly.

? Open and then close the front door.
? If the message persists, make sure all the print cartridges are seated correctly.
? Clean the contacts on the memorycontroller PCA.
? Make sure that connectors J302, J303, J304, and J305 on the memorycontroller PCA are seated correctly. Also make sure that connector J1020 on the DC controller is seated correctly.
? Replace the memory-controller PCA if it is damaged.
? Check the gears on the print-cartridge drive motors. Replace defective motors.
? Replace the DC controller.

Often when you get this error, there is a jam that is very difficult to see. You need to open the printer, remove the bottom two cartridges and the transfer belt. Then close the door part way and look straight down inside the printer. That part of the printer is called the registraion assembly and there is a paper sensor in there that often gets stuck with a small piece of paper after a paper jam is removed. You can carefully lift up on that assembly to unseat it and have a look underneath..

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HP Color LaserJet 3500, 3550, and 3700 Series Printers - 59.99.00 Error Displayed on the Control Panel Issue

When faced with a 59.99 error, we have found additional ways to solve the issue since the service manual was written.
Error: 59.99.00 Description: An error occurred in the secondary transfer engaging mechanism. Solution

Follow the troubleshooting steps below:

1. Fuser seated improperly. Reseat the fuser.
   NOTE: You may hear grinding sounds from the right, rear of the printer associated with this specific failure also.

2. Faulty secondary transfer engagement sensor. Replace the secondary transfer engagement sensor. (PS16, part of paper pickup/feed assembly)
   

3. Faulty secondary transfer engaging solenoid. Replace the secondary transfer engaging solenoid. (SL4, part of paper pickup/feed assembly)
   

4. Faulty feed motor. Replace the feed motor. (M1)
   

5. Faulty DC controller PCB. Replace the DC controller PCB.
   

6. If the 59.99 error only occurred after removing and reinstalling the paper pickup/feed assembly, what may have happened is that the secondary transfer engaging solenoid SL4 may have become dislocated. See figure below. Verify position of tab on top of solenoid.
   

   Figure (See Link)
   
   h30499.www3.hp.com/hpeb/attachments/hpeb/bsc-413/.../1/343540.em
   Parts associated with this fix:
   

   Pickup/Feed Assm - RM1-0765-070CN).(Includes solenoid & sensor)
   

   DC Controller PCB (RM1-0510-000) DC Controller, CLJ 3500/3550
   

   Primary Transfer Roller Engaging Motor (M-5) RK2-0139
   

   Drum Motor (M-3) RM1-0733Drum motor - Provides power to turn cartridge drums
   

   Delivery Motor (M-2) RK2-0138
   

   Feed Motor (M-1) - RK2-0137 Located on lower left front of main right side plate assembly
   

   Secondary transfer engagement sensor. (PS-10) (Part of Pickup/Feed Assembly)
   

   Secondary transfer engaging solenoid. (SL-4) RK2-0145-000CN
   

   Formatter Assembly Q1319-67903
   
   
   Parts sources:
   http://lbrty.com/Products/HP/parts_hp/pnC3500.html (Very Good Parts Vender Catalog) http://www.feedroller.com/Store/clj3500.php (Parts Vender) http://www.laserprinterservices.com/hp3500/hp3500.html (Parts Vender) HP Customer: To order HP computer parts and printer parts by phone please call 1-800-227-8164 , Monday-Friday, 7:00am to 7:00pm CST.
   Thank you for using FixYa. Hope this helps helps. Please keep us updated and remember to rate this answer.
   

Thank you for contacting FixYa with your printer issue.
www.hp.com Support Document (110993)

10.XX.YY SUPPLY MEMORY ERROR Description The printer cannot read or write to at least one print cartridge memory tag, or at least one memory tag is missing. Action

1. Open and close the front door.
2. Remove the print cartridges, and then reinstall them.
3. Close the front door.
4. Turn the printer off and then on.
5. If the error persists, contact HP Support.

Helpful CLJ 3600 Error Message Tables:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c00047478&prodTypeId=18972&prodSeriesId=501044
Hope this helps helps. Please keep us updated and remember to rate this answer.

59.99 An error occurred in the secondary transfer engaging mechanism. following four possibilities are mention below with proposed action:-

1. Faulty secondary transfer engagement sensor. Replace the secondary transfer engagement sensor.

2. Faulty secondary transfer engaging solenoid. Replace the secondary transfer engaging solenoid.

3. Faulty feed motor. Replace the feed motor.

4. Faulty DC controller PCB Action: Replace the DC controller PCB.

Good Luck

do Rate if got gelp

ur developing motor gears worn out replace them ur problem will be resolved...............
and
This error also shows the faulty secondary transfer engaging mechanism.
1. Faulty secondary transfer engagement sensor.
Action: Replace the secondary transfer engagement sensor.
2. Faulty secondary transfer engaging solenoid.
Action: Replace the secondary transfer engaging solenoid.
3. Faulty feed motor.
Action: Replace the feed motor.
4. Faulty DC controller PCB
Action: Replace the DC controller PCB.
good luck, and do rate the solution if helps

The following error message appears on the color graphics display after you insert a cartridge: Remove and Check Print Cartridges . The printer will not print. The message does not specify which cartridge has caused the error. Solution This error message indicates that the printer cannot determine which cartridge is causing the error. Follow the steps below to solve the problem.

1. Remove the color cartridge from the left stall (which has a blue latch) and refasten the latch. Leave the other cartridge in place.
2. Close the printer, wait 10 to 15 seconds, then look at the LCD display.
   • If the LCD display reads Insert Color Cartridge in Left Stall , the color cartridge may be causing the problem. Follow the steps below:
     1. Clean the color cartridge contacts.
     2. Reinsert the color cartridge into the carriage and close the blue latch.
     3. Close the printer and wait 10 to 15 seconds.
     4. If the LCD display reads Remove and Check Print Cartridges , replace the color cartridge.
   OR
   
   • If the LCD display reads Remove and Check Print Cartridges , follow the steps below:
     1. Reinsert the color cartridge.
     2. Remove the black or photo cartridge, depending on which one is installed in the right stall. The right stall has the gray latch. Be sure to refasten the latch on the empty stall.
     3. Clean the black or photo cartridge contacts.
     4. Reinsert the black or photo cartridge.
     5. Close the printer and wait 10 to 15 seconds.
     6. If the LCD display reads Remove and Check Print Cartridges , replace the black or photo cartridge.

1. Remove and then reinsert the cartridge indicated in the error message.
2. If the error is still displayed, clean the contacts.

1. If the error message is Error. Remove and Check Black or Photo Cartridge , the following steps may help:

1. Remove both cartridges, lower the latches, and close the printer access door.
2. Turn off the unit by pressing the On button on the front panel. Wait for the printer to completely shut down.
3. Turn the printer back on by pressing the On button.
4. When the message display reads Insert Print Cartridges , open the access door and replace the cartridges.

1. If neither of the steps above fixed the problem, either the cartridge or the printer is faulty

Try this linke below.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=411171&prodTypeId=18972&prodSeriesId=411171&objectID=c00642524

Or i cut and paste text, but you should view pictures. If you cannot get to it from link. Try typing "Paper jams alternating between front and back door" It should be first link from HP about a 3550.

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HP Color LaserJet 3500, 3550, and 3700 Series Printers - Paper Jams Alternating Between Front and Back Door Issue Description Customers may see paper jams error messages with no paper seen in the paper path. The message will alternate between check the front door and the back door. Workaround The release lever engagement tabs on the rear door can be bumped into the in-correct position. The purpose for this tab is to re-engage the fuser release levers as the rear door is closed. When one or both of these are left in the in-correct position the printer goes into a cycle of alternating between a "Jam in the Front Door" message and "Jam in the Rear Door" message. There is no paper present in the paper path when this happens. When a customer gets the "Jam in the Front Door" message and opens the front door, no paper is found. After the customer closes the front door, they get the "Jam in the Rear Door" message. When they open the rear door, find not paper (even pull out the fuser), and close the rear door, they get the "Jam in the Front Door" message. This cycle will continue

Placing both engagement tabs in the "Correct" position solves the problem and allows the print job to continue.for as long as the customer is willing to keep checking.