Ricoh SP 8400DN Field Service Manual page 1313

SC No. Type
3.
4.
SC No. Type
SC727 Internal Multi-fold Unit FD3000 Error
SC727- B Connection Error to Downstream Unit
01
Communication error has occurred with the serial interface of the downstream unit.
This is displayed as an SC code from its initial detection.
•
•
•
•
Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by
turning the main 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.
2.
3.
4.
SC727- B Protection Device Intercept Error 1
03
•
•
This is displayed as an SC code from its initial detection.
•
•
•
Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by
turning the main 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.
•
Error Name/Error Condition/Major Cause/Solution
Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly
driven. Replace the parts if there are any defects.
Check if there are any signs of a short circuit. Replace the parts if there are any defects.
Error Name/Error Condition/Major Cause/Solution
Harness defective
Downstream unit defective
Controller board defective
I/F connector defective
Turn the power off, disconnect the interface connector connected to the machine,
connect the interface connector of the downstream unit to the machine, and then turn the
power on.
If the downstream unit does not operate, resulting in connection error, there is a problem
with the downstream unit, so repair the downstream unit.
Check the harness connections between the controller board and each connector.
Replace the harness if it is damaged, or connect it if it is disconnected.
Check if there are any signs of a short circuit. Replace the parts if there are any defects.
Fuse (FU3) break is detected
24-V power supply line error
Fuse (FU3) is blowout
Controller board defective
24-V harness entrapment (short circuit)
The target parts are all the motors and the sensors.
6.Troubleshooting
575