Ricoh MP 7503SP Field Service Manual page 1348

7. Troubleshooting
SC700-06 D
SC700-07 D
1346
• Inspect the paper path for jammed paper, paper scraps, etc.
• Inspect the area around the entrance motor and remove any obstacles
that could interfere with motor operation.
• Check entrance motor harness, connector for damage and replace.
• Inspect the entrance motor bracket and motor and confirm that they are
installed correctly.
• Replace feed motor.
ADF transport motor error
The machine detected an error signal during operation of the motor.
• A problem is detected when an error is detected in register of the
transport motor encoder, in encoder channel A (B), or when the overload
signal is detected.
• However, at the second occurrence the ADF signals a jam.
• A problem occurs in the encoder channel when there is no change in the
encoder pulse even after a drive command is sent.
• An overload error occurs when the PWM duty continues high after the
prescribed has elapsed.
• Paper jammed in paper path
• Motor overload due to blockage
• Motor harness loose, broken, defective
• Motor bracket, motor installed incorrectly
• Transport motor defective
• Inspect the paper path for jammed paper, paper scraps, etc.
• Inspect the area around the transport motor and remove any obstacles
that could interfere with motor operation.
• Check relay motor harness, connector for damage and replace.
• Inspect the transport motor bracket and motor and confirm that they are
installed correctly.
• Replace transport motor.
ADF scan motor error