Ricoh pro c901 - RTB 109: Troubleshooting color misalignment

Technical Bulletin PAGE: 1/4
Model: Aries-P1.5/C1.5, AG-P1/C1, AGL-P1/C1
Date: 19-Mar-14
No.: RM077109
Subject: Troubleshooting color misalignment
Prepared by: T. Miyamoto/Hiroaki H
Matsui
From: PP Tech Service Dept., 1st PP Tech Service Sect.
Classification:
Troubleshooting
Mechanical
Paper path
Product Safety
Part information
Electrical
Transmit/receive
Other ( )
Action required
Service manual revision
Retrofit information
Tier 2
SYMPTOM
Color misalignment in Main and/or Sub scan direction even after executing MUSIC
CAUSE
Laser beam is not emitted to the correct position on the drum due to the change in size of
the image creation related components (laser unit, drum and ITB) as a result of change in
temperature and humidity in and around the machine.
SOLUTION
Adjust the laser emitting position for each color (Cyan, Magenta and Yellow) according to
the following procedure.
NOTE: Black is the reference for all other colors and does not have to be adjusted.
Paper Feed Direction
Sub Scan Direction
Main Scan Direction