Ricoh D146 Service Manual page 504

Service Call 312-396
SC No. Level
SC360-01 D
SC360-02 D
SC360-03 D
SC360-04 D
SC No. Level
SC361-01 D
SC361-02 D
SC361-03 D
SC361-04 D
D146/D147/D148/D149/D150
Error Name/Error Condition/Major Cause/Solution
TD sensor adjustment error (K)
TD sensor adjustment error (C)
TD sensor adjustment error (M)
TD sensor adjustment error (Y)
During TD sensor initialization, the TD sensor output voltage (Vt)
cannot be adjusted to the target range (target value ± 0.2V,
SP3-030-031 to 034) for 3 times consecutively.
§
TD sensor defective
§
Loose connection
§
Harness broken
§
Developer toner density differs from initial developer
§
Replace the development unit.
Error Name/Error Condition/Major Cause/Solution
TD sensor output error: Upper Limit (K)
TD sensor output error: Upper Limit (C)
TD sensor output error: Upper Limit (M)
TD sensor output error: Upper Limit (Y)
TD sensor output: Vt (SP3-210-001 to 004) > output upper limit
error threshold (SP3-211-002) continuously exceeded the upper
limit occurrence threshold value (SP3-211-003).
TD sensor connector dropout (connection fault)
1. TD sensor connector missing check
2. Check whether there is any error in the TD sensor harness
(disconnection, etc.)
3. If the sensor is defective, replace the development unit.
5-30 SM