G147 4-16 SM
the paper tray unit due to receiving a
break signal.
connection defective
Optional paper tray unit
interface board defective
BICU board defective
Communication timeout error
between BICU and LCT
626 D
The BICU cannot receive a response
within 100 ms after 3 attempts after
attempting to communicate with the
LCT.
Serial line connecting BICU and
LCT unit unstable
External noise
BICU board and LCT main
board connection defective or
loose
LCT interface board defective
BICU board defective
Communication break error between
BICU and LCT
627 D
The BICU cannot communicate with
the LCT unit due to receiving a break
signal.
Serial line connecting BICU and
LCT unit unstable
External noise
BICU board and LCT main
board connection defective or
loose
LCT interface board defective
BICU board defective
Engine startup error
670 D
The BICU failed to respond with the
prescribed time when the machine
was turned on.
Connections between BICU
and controller board are loose,
disconnected, or damaged
Replace the BICU
Replace the controller board
Controller startup error
672 D
After power on, the line between Controller stalled
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