HP Color LaserJet CP5525 User Manual

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Introduction
When the Main Drive Assembly on the CP5525 is removed from the printer, care must be taken
when this part is reinstalled to ensure the gears in this assembly do not become misaligned.
There are two reasons why the Main Drive Assembly would need to be removed from this product
1. The part is defective and must be replaced with a new part. In this case, the new part is
shipped with orange alignment pins in place to ensure the gears stay aligned until the
assembly is installed on the printer.
2. The Fuser Drive Assembly must be replaced and the Main Drive Assembly must be
removed to access this part. In this case, where the Main Drive Assembly is removed and
the same assembly is reinstalled, some additional steps need to be taken in order to
maintain the alignment of the gears. This document explains the steps that must be
executed in order to successfully remove and reinstall a Main Drive Assembly.
Remove the Main Drive Assembly
Follow the instructions in the Service Manual for preparing to remove the Main Drive Assembly
through Step 16, but DO NOT YET REMOVE THE MAIN DRIVE ASSEMBLY ITSELF.
Checking and Realigning Main Drive Assembly Gears
To check for correct alignment of the gears, look through the alignment hole on the right end of the
assembly. Shine a flashlight behind the assembly in order to see if all the holes are lined up as
shown below:
Work
Instruction
Security Level: HP and Channel Partner Internal Use
Date Written/Updated: 11/22/10
Document Number:
Top Issue: No Top issue date range:
Document keywords: Main Drive Assembly Remove Replace Reinstall Alignment
Document description:
 Describes how to ensure Main Drive Assembly part stays in alignment when it has to be
removed and replaced in order to access the Fuser Drive Assembly.
 Describes how to realign gears in the Main Drive Assembly should they become
misaligned.
Color LaserJet CP5525 –Removing
and Reinstalling Main Drive
Assembly – Alignment Instructions

HP Color LaserJet CP5525 Specifications

General

Print Technology	Laser
Print Resolution Black	Up to 600 x 600 dpi
Print Resolution Color	Up to 600 x 600 dpi
Recommended Monthly Page Volume	2, 500 to 10, 000 pages
Processor Speed	800 MHz
Standard Memory	512 MB
Maximum Memory	1 GB
Duplex Printing	Automatic (standard)
Standard Paper Trays	2
Maximum Paper Trays	5
Output Capacity	Up to 500 sheets
Operating System Compatibility	Windows, Mac OS, Linux
Monthly Duty Cycle	120, 000 pages
Hard Disk	Optional
Input Capacity	Up to 850 sheets
Media Sizes Supported	A4, A5, A6, B5 (JIS)
Media Types	Plain, bond, glossy, labels, transparencies, envelopes, cardstock, recycled, rough
Connectivity	1 Hi-Speed USB 2.0
Network Ready	Standard
Print Speed Black	Up to 30 ppm
Print Speed Color	Up to 30 ppm

Summary

Introduction to Main Drive Assembly Maintenance

Main Drive Assembly Removal and Reinstallation

Checking and Realigning Main Drive Assembly Gears

Procedure to check and realign gears in the Main Drive Assembly for proper function.

Checking Gear Alignment

Check for correct alignment of gears by looking through the alignment hole.

Resolving Gear Misalignment

Steps to resolve gear misalignment by removing the Developing Disengagement Motor.

Installing Alignment Pins

Alignment Pin Insertion Points

Photograph showing insertion holes for alignment pins in the Main Drive Assembly.

Alignment Pin Installation Details

Notes on installing alignment pins at different angles for clearance and seating.

Main Drive Assembly Removal Continuation

Main Drive Assembly Reinstallation