Ricoh Pro 8320 - Buffer Pass Unit: Ctb_+24 V_Power Supply Error; IOB FPGA Startup Error; Sc605-00; Sc618-01

1.SC Codes
189
SC600
SC605-00
Error Name
IOB FPGA Startup Error
Pattern
D
Error Condition
The IC on the IOB does not start up normally.
Major Cause
IC on the IOB is defective.
Solution
Replace the IOB.
SC618-01
Error Name
Buffer Pass Unit: CTB_+24V_Power Supply Error
Pattern
D
Error Condition
+24V power off is detected at the control board.
Major Cause
 Power of downstream unit is not turned on.
 If the control board LED 4 (+24V) is off:
1. Control board circuit protector has tripped.
2. Harness is damaged or not connected properly.
3. PSU is defective.
 If the control board LED 4 (+24V) is lit:
Control board is defective (SC detection error)
Solution
1. Reset the control board circuit protector (FU1).
When the circuit protector is tripped, its white pin protrudes from the circuit protector. Push in the