Ricoh Neptune-P1, Service Manual

Page: 201 / 457

After normal startup, communication with
the controller stopped.
690 D VDB communication error
There was no serial communication with the VDB
within 1 sec. after power on.
• VDB-to-MCU harness or
connectors broken, loose,
defective
• VDB defective
• MCU defective
SC7XXX
720 D Fan folder transport motor error
A transport motor lock signal
was detected for more than
5 sec. while the motor was
running.
• Transport motor harness connector loose,
disconnected, broken
• Motor overload due to an obstruction
• Transport motor defective
• Fan folder unit MCU defective
762 D Front fold plate HP sensor error
The state (on/off, off/on) of the
front fold plate HP sensor in the fan
fold unit did not change 1 sec. after
the plate started to move.
• Fold plate motor (F) harness connector loose,
disconnected, broken
• Front fold plate HP sensor harness connector
loose, disconnected, broken
• Fold plate motor (F) defective
• Front fold plate HP sensor defective
• Undetected paper is jamming the action of the
motor or fold plate
• Fan folder unit MCU defective
763 D Rear fold plate HP sensor error
The state (on/off, off/on) of the
rear fold plate HP sensor in the fan • Fold plate motor (R) harness connector loose,
disconnected, broken
4. Troubleshooting
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