Ricoh pro c901 - RTB 106: Skew correction error

Technical Bulletin PAGE: 1/2
Model: Aries-P1.5/C1.5, AG-P1/C1, AGL-P1/C1
Date: 07-Feb-14
No.: RM077106
Subject: Troubleshooting skew correction error (SC270,271
and 272)
Prepared by: T. Miyamoto
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
SC270: Skew correction error Y
SC271: Skew correction error M
SC272: Skew correction error C
CAUSE
The value in SP2-104-001 ~ 003 (Skew Adjustment Display) exceeds the upper limit and
locks the skew correction motor.
SOLUTION
When encountering SC270 or SC271 or SC272, do the following procedure before
replacing the laser unit.
1. Do the following SP to initialize the skew adjustment values.
SP2-117-001
Resets the skew adjustment value for the C skew correction motor
SP2-117-002
Resets the skew adjustment value for the M skew correction motor
SP2-117-003
Resets the skew adjustment value for the Y skew correction motor
2. Confirm the adjustment values are all reset to "0" in the following SP.
SP2-104-001
Displays the C skew adjustment value against Bk
SP2-104-002
Displays the M skew adjustment value against Bk
SP2-104-003
Displays the Y skew adjustment value against Bk
3. Execute MUSIC (S2-153-001; MUSIC Condition Settings 1 Manual Execute: Mode a)
4. Execute MUSIC again. (MUSIC needs to be executed twice in succession.)
5. Check if the skew amount results in the range “+15 micro m ~ -15 micro m” in the
following SP.
SP2-181-011
Skew amount C
SP2-181-027
Skew amount M
SP2-181-043
Skew amount Y