Gestetner B070 Service Manual page 350

SERVICE CALL CONDITIONS
SC670: Engine Startup Error
Definition [B]
Several possible causes for this error:
At power on or after the machine leaves the energy conservation mode:
• /ENGRDY signal does not assert
• IPURDY signal does not assert
After power on and the prescribed time has elapsed:
• No EC response from the engine
• No PC response from the engine
• No SC response from the engine
During machine operation mode:
• Write to Rapi drive failure (could not locate destination on the PCI)
• After the /ENGRDY signal asserts with no effect.
Possible Causes
• BCU ! Controller Board disconnected
• BCU board defective
• Controller board defective
• Mother board defective
• Software error; switch off/on, if that fails, change the engine firmware
• PSU-E or PSU-C defective
SC672: Controller Startup Error
Definition [B]
The line between the controller board and the operation panel does not open
correctly when the machine is powered on, or after the machine was powered on
communication between the controller and operation panel is suspended.
The controller board and operation panel could not exchange the handshake (FDH)
and acknowledge (FEH) signals within 15 s of the operation panel reset after power
on, or after 2 retries there was no response to the transmission line confirmation
command issued every 30 s from the operation panel to the controller board.
Possible Causes
• Controller board defective
• Controller board installed incorrectly
• Operation panel harness connection loose or incorrect
B070/B071
CÓPIA NÃO CONTROLADA
4-30
CÓPIA NÃO CONTROLADA
SM