Ricoh D124-17 Service Manual page 634

6. Troubleshooting
[50B2]
SC834 D Self-diagnostic error: optional memory
[5101]
SC838 D
[2701]
SC840 D
SC841 D
632
SSCG register value was incorrect.
• Defective connection bus
• Defective SSCG
• Replace the motherboard (engine I/F board).
An error occurred after write/verify check for optional RAM on the motherboard..
• Defective memory device
• Replace the motherboard (engine I/F board).
Self-diagnostic error: Clock generator
A verify error occurred when setting data was read from the clock generator via
the I2C bus
• Defective clock generator
• Defective I2C bus
• Defective I2C port on the CPU
• Replace the controller board.
EEPROM access error
A read error occurred during I/O processing. The failure of the 3rd attempt to
read caused this error.
• Defective EEPROM
• Replace the EEPROM.
EEPROM read error
Mirrored data of the EEPROM is different from the original data in EEPROM.
• Data in the EEPROM was overwritten for some reason.
• Cycle the machine off/on
CTL
CTL
CTL
CTL