Ricoh CH-C1 User Manual

Technical Bulletin PAGE: 1/1
Model: Model CH-C1
Date: 09-Nov-13
No.: RD135047
Subject: SC548-00 / Noise
Prepared by: Takeshi Toriumi
From: 1st Tech Service Sect. MFP/P Tech Service Dept.
Classification:
Troubleshooting
Mechanical
Paper path
Product Safety
Part information
Electrical
Transmit/receive
Other ( )
Action required
Service manual revision
Retrofit information
Tier 2
Symptom
SC548-00 (Fusing rotation detection) or a rattling noise may occur from the fusing unit.
Cause
The grounding plate [A] inside the heat roller may not be set in the normal position during factory assembly.
The grounding plate moves during operation and may contact shielding plates [B]. As a result, SC548-00
and/or noise occur.
*This picture shows the inside of the heat roller taken with an X-ray photograph.
Solution
Production line
Assembly procedure is corrected to ensure that the grounding plate does not drop. The heat roller was
modified and applied to the following S/Ns.
Model
S/N
Model
S/N
D135-17
E233C700565
D136-17
TBA
D135-21
TBA
D136-21
TBA
D135-27
E233C830033
D136-27
E243C830001
D135-29
TBA
D136-29
TBA
In the field
Replace the heat roller with the modified one (P/N: D1364184).
Shielding plate [B]
Grounding plate [A]

Ricoh CH-C1 Specifications

General

Brand	Ricoh
Model	CH-C1
Category	Printer Accessories
Language	English