Ricoh MP 7503SP Field Service Manual page 1331

• Cycle the machine off/on.
• If the error persists, first determine if there is any electronic noise on the
• Remove the rear upper cover and inspect the NVRAM on the BICU.
• Confirm that the NVRAM is installed, undamaged, and installed correctly.
• Make sure that the pins of the NVRAM are seated correctly (not bent out
• Replace NVRAM.
• Replace BICU.
SC669-20 Channel error when reading data from NVRAM
An error occurred during communication with the NVRAM on the BICU. Three
attempts to communicate with NVRAM failed.
• Electronic noise
• NVRAM missing, not mounted on BICU
• NVRAM not installed correctly
• NVRAM damaged
• BICU damaged
• Cycle the machine off/on.
• If the error persists, first determine if there is any electronic noise on the
• Remove the rear upper cover and inspect the NVRAM on the BICU.
• Confirm that the NVRAM is installed, undamaged, and installed correctly.
• Make sure that the pins of the NVRAM are seated correctly (not bent out
• Replace NVRAM.
• Replace BICU.
SC669-21 Device error when reading data from NVRAM
An error occurred during communication with the NVRAM on the BICU. Three
attempts to communicate with NVRAM failed.
power line or around the machine.
of place).
power line or around the machine.
of place).
SC600: Data Communication
1329