HP LASERJET 3800 User Manual

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HP Color LaserJet 3000, 3600, and

Paper

3800 Series Printer - Toner Cartridge

Shutters not closing/opening

Security Level: For HP and Channel Partner Internal Use
Date Written/Updated: September 19, 2006

Document Summary

 Customers may experience trouble with shutters on the toner cartridges not opening or closing
 Follow the troubleshooting steps below to determine the root cause

Issue Description:

The customer may experience issues with the toner cartridge shutters not opening or closing
when opening or closing the front door.

Solution or Workaround:

• Reseat all the cartridges

• Check for a broken part that controls the movement of the cartridge engagement arm, the cartridge

shutters, and the OPC drive. (See picture below – it outlines where the break occurs in the picture to the
left, and where this part is located for the picture on the right. The red arrows show where the part
should be.) You can easily check this without taking off the covers by reaching over to the white rod arm
on the right hand side of the ETB, and “wiggle” it. If it moves easily, then this part is broken. Replace
this part if broken (RC1-6645-000CN).

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NOTE: If these break, this can also cause a 10.92.XX error.

In order to replace this part, please see the documentation below.

SERVICE ACTION
To Be Performed By: Service Technicians

1. Remove the toner cartridges and ETB.

2. Remove the upper cover (Page 80 in the Service Manual).

3. Remove the right cover (Page 87 in the service Manual).

4. For duplex models: Remove the wires to the duplex fan in the front cover. Simply follow
instructions 5 and 6 on page 77 – 78 in the service manual. This allows for easier removal of the
cable harnesses.

5. Unplug the following connectors from the driver PCA and remove the wires from the cable
harnesses: a. J209, b. J406, c. J404, d. J213, e. J207, f. J203, g. J402, h. J206, I. J410, j. J208.

6. Remove the interlock switch assembly by removing the one screw attaching it to the chassis. Be
aware of the clip at the top and the alignment knob when removing the assembly.

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7. Remove the bottom cable harness. There is one screw at the top to remove. Hint: when you
reinstall the guide, make sure that the rear locking tab is seated in the sheet-metal chassis. (See
page 120 - 121 in the service manual). It may be necessary to disconnect the white door latch
from the front door. (Notice the red arrow call-out).

8. Remove the main drive assembly (MDA). There are six screws attaching the MDA to the chassis.
Carefully note the locations of the screws to be removed.

CAUTION: Removing the incorrect screws could lead to opening up the MDA, requiring a uni t
replacement!

NOTE: Two gears may fall off, there are instructions in step 16 on how to align them during the
re-installation process.

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Remove the metal case by removing two screws. Remove the White Link Arm (see arrow in
figure below)

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9. At this point, check to see if the white slide lever is broken. If the lever is broken (see picture
below), replace it with part number RC1-6643-000CN.

10. Remove the white slide lever by pushing down from the top to release it from the two tabs.
Carefully remove the lever by pulling out, be aware that four springs are attached to this lever and
the individual cartridge locks.

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To reinstall and perform the correct timing for different parts, follow these

procedures:

11. Attach one end the four springs to the white slide lever and install the lever back into the
machine. (** Attach the other end of the spring in step 14.) Place the white slide lever so the two
metal tabs are in place (circled below), then adjust all the black cartridge locks to be “under” the
tabs on the white slide lever. Bend the top of the white slide lever out to put the top black
cartridge lock in place. Slide the white slide lever up when all the black cartridge locks are in
place.

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