Sc Codes Group 3: Image Development - 1 - Ricoh D014 Service Manual

4.2.3 SC CODES GROUP 3: IMAGE DEVELOPMENT – 1
SC300 D Drum charge corona wire error: K
The output of the charge
corona wire of the black PCU
is abnormal.
SC301 D AC charge output error: M
SC302 D AC charge output error: C
SC303 D AC charge output error: Y
An interrupt checks the status of the power pack every 10 ms. This SC is
issued if the VBCU detects a short in the AC charge for M, C, Y.
-or-
SM
CÓPIA NÃO CONTROLADA
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.
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.
4-17
CÓPIA NÃO CONTROLADA
Service Call Tables
CGB power pack connection loose,
broken defective
Check CGB power pack connection
to BCU
CGB power pack defective
BCU defective
Replace OPC drum
D014/D015/D078/D079