Ricoh D117 Service Manual page 447

Troubleshooting Guide
Test pattern check
Others
After Executing SP2-111-001
Result: "0" in SP2-194-007

Result: Color registration errors in SP2-194-010, -011, -012, -013

Test pattern check
Low image density on the output
The main scan registration is
shifted, but only at the central
area of the image on the output.
The main scan registrations of M,
C, Y, K are shifted.
D117/D118
Possible cause/Countermeasure
Skew correction upper limit error

Defective BICU

Defective laser optics housing unit

1. Replace the BICU.
2. Perform the color skew adjustment (
3. Replace the laser optics housing unit.
Possible cause/Countermeasure
Low pattern density

Do the forced process control (SP3-011-001) or
supply some toner (SP3-030-xxx).
Defective ID sensor at center

Deformed center area on the image transfer belt

Defective BICU

1. Replace the ID sensor.
2. Replace the image transfer belt.
3. Replace the BICU.
Defective laser optics housing unit

Defective ID sensor

Defective BICU

Incorrect SP value

1. Perform the color skew adjustment (
2. Replace the laser optics housing unit.
3. Replace the ID sensor.
4. Replace the BICU.
5. Adjust the value with SP2-182-004 to -021.
6-86
p.4-3).
p.4-3).
SM