Ricoh PRO C7200X - Page 106

1.SC Codes
102
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
 Thermistor disconnection
 Connecter contact failure
 Replace the Heating Roller Thermistor
 Reconnect the connector.
 Replace the Fuser unit.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC547-
01
D
Zero Cross Error 1 (Relay contact welded)
Fusing relay contact welded
 Fusing relay defective (contact welded)
 Fusing relay drive circuit defective
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again,
do the following steps. Check if the SC reoccurs by cycling the power after each
step.
1. Check the connectivity from CN418 on the AC drive board to CN322 on the
IOB.
2. Replace the AC drive board.
3. Replace the IOB.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC547-
02
D
Zero Cross Error 1 (Relay contact defective)
Fusing relay contact defective
 Fusing relay defective (contact opened)
 Fusing relay drive circuit defective
Check if the SC occurs by turning the power OFF then ON. If the SC occurs again,
do the following steps. Check if the SC reoccurs by cycling the power after each
step.
 Check the connectivity of the harnesses listed below:
 CN418 on the AC drive board to CN322 on the IOB.
 CN411 on the AC drive board to CN401 on the ACRY.
 Replace the AC drive board.
 Replace the IOB.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC547-
03
D
Zero Cross Error 1 (low frequency error)
The AC power supply frequency is low or unstable.
 Unstable commercial power supply frequency