Ricoh D124-17 Service Manual page 623

SC669-64 D
SC669-65 D
SC669-66 D
SC670 D Engine startup error
The MCU failed to respond within the prescribed time when the machine was
turned on.
Controller start up error
• After the machine was powered on, communication between the controller
• After startup reset of the operation panel, the attention code (FDH) or the
• After the controller issued a command to check the communication line with
SC672 D
• Controller stalled
• Controller board installed incorrectly
• Controller board defective
• Operation panel connector loose, broken, or defective
• The controller did not completely shut down when the switch was turned off.
• Check the setting of SP5-875-001.
• If this SP is set to "1 (OFF)", change it to "0 (ON)"
SC680-01 D DSP Start Error
Operation Stop Error at EEPROM Maintenance Log Data Read
Buffer Full Error at EEPROM Maintenance Log Data Read
No Error Code at EEPROM Maintenance Log Data Read
• Connections between MCU and controller board are loose,
disconnected, or damaged
• MCU defective
• Controller board defective
and the operation panel was not established, or communication with
controller was interrupted after a normal startup.
attention acknowledge code (FEH) was not sent from the controller within
30 sec..
the controller at 30-second intervals, the controller failed to respond twice.
SC600: Communication
CTL
CTL
621