CET Ricoh IM C2000 - User Manual

Installation & Maintenance Instruction
CET Group Co., Ltd. www.cetgroupco.com
Ricoh IM C2000 drum unit rebuild instructions.
(See video as well)
Tools and materials needed to rebuild the drum unit:

PH#2 screwdriver
 Small flat bit screwdriver

Toner vacuum cleaner
 Cotton swabs
 Conductive grease

Disposable gloves
 CET part number CET501012
Step #
Rebuilding Steps
1.
Start with the Ricoh OEM D0BK-2205 Drum Unit for
Ricoh IM C2000, C2000A, C2500, C2500A (also used in Lanier and Savin)
2.
Remove the screw from the rear PCDU end cover using a PH#2 screwdriver, then pull off
the rear PCDU end cover
3.
Remove the three screws from the rear OPC drum support hub using a PH#2 screwdriver
4.
Carefully pry the rear OPC drum support hub from the drum unit with a small flat bit
screwdriver and then pull it off the drum unit
5.
Remove the two screws from the front OPC drum support hub using a PH#2 screwdriver
6.
Carefully pry the front OPC drum support hub from the drum unit with a small flat bit
screwdriver and then pull it off the drum unit.
7.
Disconnect the connector, then unwind the toner sensor cable from the drum unit
section
8.
Separate the PCU (drum unit) section from the developer unit section
9.
Remove the OPC drum from the drum unit section
10.
Remove the two screws on the PCR assembly in the drum unit section using a PH#2
screwdriver
11.
Remove the PCR assembly from the drum unit section and set aside
12.
Remove the two screws on the drum cleaning blade using a PH#2 screwdriver
13.
Remove the cleaning blade by carefully prying it out with a small flat bit screwdriver and
lifting it off the drum unit section
14.
Remove waste toner in the drum unit section with a toner vacuum.
Do not use a conventional vacuum cleaner.
15.
Unpack the new CET501012 drum unit rebuild kit
16.
Kit contents:
- OPC Drum
- Drum cleaning blade
- Primary Charge Roller (PCR)
- PCR cleaning roller
17.
Take out the new CET drum cleaning blade
18.
Reinstall the drum cleaning blade and secure it with two screws using a PH#2 screwdriver

Summary

Ricoh IM C2000 Drum Unit Rebuild Instructions

Tools and Materials for Rebuild

Lists all necessary tools and materials for a successful drum unit rebuild.

Rebuilding Steps Overview

Step-by-step guide for disassembling and reassembling the drum unit components.

Overview

1. Function Description
2. Important Technical Specifications (Implied from Rebuild Steps)
3. Usage Features (Implied from Maintenance)
4. Maintenance Features

This document outlines the rebuild instructions for Ricoh IM C2000 series drum units, providing a detailed guide for technicians to replace key components and restore the unit's functionality. The process involves disassembling the drum unit, replacing worn parts from a rebuild kit, and reassembling the unit, ensuring proper alignment and connection of all components.

Function Description

The Ricoh IM C2000 series drum unit is a critical component in laser printing systems, responsible for forming the electrostatic image that will eventually be transferred to paper. It houses the Organic PhotoConductor (OPC) drum, which is charged, exposed to laser light to create a latent image, and then attracts toner. Other essential components include the Primary Charge Roller (PCR), which uniformly charges the OPC drum, and the cleaning blade, which removes residual toner from the OPC drum after image transfer. The developer unit, which is separated and reconnected during the rebuild process, supplies toner to the OPC drum. Proper functioning of the drum unit is paramount for high-quality print output, as issues with any of its components can lead to print defects such as streaks, spots, or faded images. The rebuild process aims to extend the life of the drum unit by replacing these wear-prone components, offering a cost-effective alternative to purchasing a new OEM unit.

Important Technical Specifications (Implied from Rebuild Steps)

• Compatibility: The rebuild instructions are specifically for Ricoh OEM DOBK-2205 Drum Units, compatible with Ricoh IM C2000, C2000A, C2500, C2500A, and also used in Lanier and Savin models.
• Rebuild Kit (CET501012): This kit includes the essential wear components:
  • OPC Drum: The core imaging component.
  • Drum Cleaning Blade: Removes residual toner from the OPC drum.
  • Primary Charge Roller (PCR): Charges the OPC drum.
  • PCR Cleaning Roller: Cleans the PCR.
• Tools Required:
  • PH#2 screwdriver: For removing and securing screws.
  • Small flat bit screwdriver: For prying components.
  • Toner vacuum cleaner: Essential for safe removal of waste toner.
  • Cotton swabs: For cleaning contacts and applying grease.
  • Conductive grease: Applied to PCR and conductive saddle for proper electrical contact.
  • Disposable gloves: Recommended for handling components, especially the PCR, to prevent contamination.
• Electrical Connections: The drum unit involves electrical connections for the toner sensor cable and conductive paths for the PCR, which are crucial for its operation.
• Mechanical Alignment: Precise alignment of the OPC drum, PCR assembly, and the connection between the drum unit and developer unit sections are critical for correct operation. Notches and tabs are used for proper alignment.

Usage Features (Implied from Maintenance)

• Modular Design: The drum unit is designed with separable sections (PCU/drum unit and developer unit) to facilitate maintenance and component replacement.
• Screw-Based Assembly: Most components are secured with screws, allowing for straightforward disassembly and reassembly with common tools.
• Sensor Integration: The toner sensor cable is an integral part of the drum unit, indicating its role in monitoring toner levels or other operational parameters.
• PM Counter Reset: After a rebuild, the corresponding PM (Preventive Maintenance) counters must be reset via the printer's service menu (SP3-701 or "PM Counter / New Unit Set"). This ensures the printer accurately tracks the life of the new components and avoids premature error messages or service calls.

Maintenance Features

• Component Replacement: The primary maintenance feature is the ability to replace individual wear components (OPC drum, cleaning blade, PCR, PCR cleaning roller) rather than the entire drum unit. This significantly reduces maintenance costs and waste.
• Cleaning Procedures:
  • Waste toner removal: A toner vacuum is specified for safely removing waste toner from the drum unit section. The explicit warning "Do not use a conventional vacuum cleaner" highlights the fine nature of toner and the risk of damage or health hazards with improper equipment.
  • Contact cleaning: Cotton swabs are used to clean the PCR contact and the black conductive saddle, ensuring good electrical conductivity.
• Lubrication: Conductive grease is applied to the PCR contact and the conductive saddle to maintain proper electrical connection and reduce wear.
• Protective Measures:
  • Protective sleeve on PCR: The new PCR comes with a protective sleeve that must be removed just before installation, protecting its delicate surface.
  • Protective wrap on OPC drum: Similarly, the new OPC drum is protected by a wrap that needs to be removed before placement.
  • Handling precautions: The instruction "Wear clean disposable gloves or do not touch the PCR working surface with bare hands" emphasizes the sensitivity of the PCR surface to oils and contaminants, which can degrade print quality.
• Detailed Disassembly/Reassembly Steps: The manual provides a step-by-step guide, ensuring that technicians can systematically perform the rebuild without missing critical steps. This includes specific instructions for prying components carefully to avoid damage.
• Troubleshooting (Implied): The emphasis on proper connection, alignment, and cleaning of contacts suggests that these are common points of failure or issues that can arise during a rebuild if not handled correctly. Ensuring the PCR is "moveable and spring loaded" is a specific check for correct installation.
• Video Support: The mention "See video as well" indicates that visual aids are available to complement the written instructions, which is particularly helpful for complex mechanical procedures.
• Parts Sourcing: The instruction to visit the website for components ("To find the components used in this video please visit our web site www.cetgroupco.com") highlights the availability of specific rebuild kits and parts from CET Group.

CET Ricoh IM C2000 Specifications

General

Brand	CET
Model	Ricoh IM C2000
Category	Computer Hardware
Language	English