Ricoh CH-C1 - RTB 168: SC442

Technical Bulletin PAGE: 1/3
Reissued：26-Aug-16
Model: CH-C1
Date: 27-Jul-16
No.: RD135168b
RTB Reissue
The procedure in page 3 was added.
SYMPTOM
SC442 occurs
CAUSE
The worm gear for the DC motor is cracked.
As a result, the press-fit pressure between the gear and motor spindle is reduced, causing
the DC motor spindle to rotate in idle.
Crack in DC motor worm gear
Concave point in gear, where stress was concentrated
Subject: SC442
Prepared by: K.Kunimatsu
From: Field Quality Management Group1, FQM Dept.
Classification:
Troubleshooting
Mechanical
Paper path
Part information
Electrical
Transmit/receive
Action required
Service manual revision
Retrofit information
Product Safety
Other ( )
Tier 2