Ricoh Pro 8300S - Charge Grid Voltage Error; Sc304-00

1.SC Codes
57
Execute "Reset Charger Unit" (SP7-622-012).
7. CGB power pack board damaged
Replace the CGB Power Pack (PCB1).
SC304-00
Error Name
Charge Grid Voltage Error
Pattern
D
Error Condition
The charge grid voltage of "Charge grid/G output" falls below the prescribed value.
Major Cause
 Drum charge unit is not set correctly.
 Leakage occurred at some point in the circuit.
 Connector of electric signal wires (harnesses) is not set properly.
 Electric signal wires (harnesses) are damaged.
 Charge grid is defective (damaged or deformed).
 Drum charge unit is defective.
 CGB power pack board is damaged.
Solution
1. Check whether the drum charge unit is installed correctly
Re-install the drum charge unit if necessary.
2. Check the location of leakage
If there is paper dust, spilled toner, etc, clean the area. If there is bending, contact, etc, repair as
necessary.
3. Check whether the connector of signal harness is connected properly
Reconnect the drum charge unit harness connector.
4. Check if the signal harness is damaged
Replace the drum charge unit harness.
5. Charge grid defective (damaged or deformed)
Replace the charge grid.
Execute "Reset Charger Grid" (SP7-622-013).
6. Drum charge unit defective
Replace the drum charge unit.
Execute "Reset Charger Unit" (SP7-622-012).
7. CGB power pack board damaged