Ricoh MP 7503SP Field Service Manual page 1342

7. Troubleshooting
SC672-11
SC672-12
1340
D Controller start up error
After the machine was powered on, communication between the
controller and the operation panel was not established, or
communication with controller was interrupted after a normal startup.
• Controller stalled
• Board installed incorrectly
• Controller board defective
• Operation panel connector loose, broken, or defective
• Controller late
• Turn the main power off/on.
• Check the connection of the controller board.
• Replace the controller board.
• Check the control panel harness.
D Controller start up error
Communication with controller was interrupted after a normal startup.
• Controller stalled
• Board installed incorrectly
• Controller board defective
• Operation panel connector loose, broken, or defective
• Controller late
• Turn the main power off/on.
• Check the connection of the controller board.
• Replace the controller board.
• Check the control panel harness.
CTL
CTL