Ricoh G133 Service Manual page 237

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
The measured voltage is not proper when IOB measures the charge
output for each color.
Disconnected or broken high voltage cable
Defective or not installed PCU
- -
Defective high voltage power supply
1. Check or replace the connectors.
2. Replace the PCU for the affected colour.
3. Replace the high voltage power supply.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
360 D TD sensor (Vt high) error 1: K
361 D TD sensor (Vt high) error 1: M
362 D TD sensor (Vt high) error 1: C
363 D TD sensor (Vt high) error 1: Y
The Vt value of the black, magenta, cyan, or yellow TD sensor
exceeds the specified value (default: 4.7V) with SP3020-002 for
twenty counts.
The [Vt - Vtref] value of the black, magenta, cyan, or yellow TD
sensor exceeds the specified value (default: 5.0V) with
SP3020-001.
- -
Black, magenta, cyan, or yellow TD sensor disconnected
Harness between TD sensor and PCU defective
Defective TD sensor.
1. Check the black, magenta, cyan, or yellow TD sensor connector
and harness between the TD sensor and PCU for damage.
2. Check the drawer connector.
3. Replace the defective PCU.
SM 4-21
SC Table
G133