Df Communication Error - Ricoh A151 Field Service Manual

2.15 DF COMMUNICATION ERROR

- Problem -
The original misfeed indicator blinks (no SC code is indicated).
- Definition -
The DF CPU does not receive the "DF confirmed" signal from the copier
CPU when the main switch is turned on.
- Possible Causes -
The optical fiber cable is not correctly connected to the DF main board
•
or the DF interface board.
CN2 on the DF interface board or CN120 on the main board is not
•
correctly connected.
Defective optics fiber cable
•
Defective main board
•
Defective DF main board
•
Defective DF interface board
•
Defective dc harness between CN2 and CN120
•
FSM 6-49 A151/A152