Service Call 622-691
D255/D256/M281/M282 6-54 SM
6.7.2 SC600 (CONTROLLER)
SC No. Type
Details (Symptom, Possible Cause, Troubleshooting
Procedures)
SC641-00 D Communication error between BiCU and Controller board.
Controller board does not respond after BiCU tries to
communicate three times.
 Controller board software error
 Connect error between BiCU and Controller board
 BiCU software error
 Check connections between Controller board and BiCU.
 Turn the main power OFF then ON.
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC670-01 D Engine does not start up during the staring up
 /ENGRDY signal was not asserted when the machine was
turned on.
 PCI I/F is not linked up when the machine returns from
energy saver mode.
 EC/PC/SC response was not received within specified time
from power on.
 Writing to Rapi driver failed (the other party not found
through PCI).
 Connection defect between controller board and BiCU.
 BiCU is down / unstable
Engine board does not start up.
Refer to page 6-118 "SC670 (engine start up error) is displayed".
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