April, 2007 SERVICE CALL CONDITIONS 4-57
BICU-MUSIC communication error SC680 D
The main CPU fails to
communicate with the MUSIC
CPU within 5 sec. and three
attempts failed.
• UART communication failure; replace the
BICU
Memory address command error SC687 D
The BICU does not receive a
memory address command from
the controller 120 seconds after
paper is in the position for
registration.
• BICU-Controller connection loose,
defective
• BICU defective
• Controller defective
07/04