Ricoh V-C3 D081 Field Service Manual page 662

3. Appendix: Service Call Conditions
3
SC304 D
SC308 D
SC313 D
SC314 D
SC315 D
84
• Disconnect the high voltage cable from Terminal C of the multiple high-voltage
supply board.
• Attach a voltmeter to the terminal.
• If there is no output from the terminal, replace the high voltage power supply.
-or-
• If there is output from the terminal, test the resistance between the high voltage
cable and the ground. If resistance is nearly "0", check the high-voltage harness
for defects and replace it if necessary.
• Test the conductivity between the OPC unit and the ground. If there is no
conductivity between the OPC unit and ground, replace the OPC unit.
• If there is no charge PWM signal, replace the harness and/or VBCU.
Charge corona error: charge leak (K PCU)
A abnormal detection signal (H) was detected for longer than 250 ms.
• Turn the machine power off/on
• CGB power pack harness connectors loose, broken, defective
• Corona wire caps loose, missing
• CGB power pack defective
Charge corona unit connectors loose, broken, defective
Charge corona error: wire cleaner error (K PCU)
The charge corona wire cleaner motor remained locked after the motor was switched
on, or failed to switch off within the prescribed time after cleaning started.
• Turn the machine power off/on
• Motor overloaded due to a physical obstruction
• Motor defective
Charge, development error: M
Charge, development error: C
Charge, development error: Y
After the M, C, or Y drum started to rotate, the feedback for the charge unit of the
color dropped below 0.3V.