B140 SERIES AND G126 SERVICE MODE
B064 Series/B140 Series/G126 4-52 SM
SC No. Symptom Possible Cause
Engine startup error 670 D
The machine engine, controlled by
the BICU (Base Image Control
Unit), was operating incorrectly
when the machine was switched on
or returned to normal operation
from the energy save mode.
• Check the connections between BICU
and controller
• BICU defective
• Controller board defective
• PSU defective
Controller startup error 672 B
• After power on, the line between
the controller and the operation
panel did not open for normal
operation.
• After normal startup,
communication with the
controller stopped.
• Controller stalled
• Controller installed incorrectly
• Controller board defective
• Operation panel harness disconnected or
defective
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