1.SC Codes
589
Pattern
B
Error Condition
A rotation error is detected when the multi bypass unit cooling fan was turned ON.
(Two multi bypass unit cooling fans are installed. This SC is generated when there is an error from one
of the fans.)
Major Cause
Power of downstream unit is not turned on.
Multi bypass unit cooling fan defective / connector disconnected
Harness is damaged
PCB defective
Solution
In addition to checking for sensor/actuator defect by eye, also execute Input/Output Check as
necessary.
1. Set (slide) the multi bypass tray again, and turn the main power OFF then ON.
2. Check and reconnect the harness.
3. Replace the multi bypass unit cooling fan.
4. Check the harness of the multi bypass unit/LCT. If it is damaged, replace the harness.
5. Replace the PCB of the multi bypass unit.
6. Replace the PCB of the LCT.
SC781-03
Error Name
LCT2: Overcurrent Protection Device Error (Vacuum Feed LCIT)
Pattern
B
Error Condition
The fuse on the PSU/PCB in LCT2 blew. (fuse blown signal “H (error)”)
Major Cause
Power of downstream unit is not turned on.
Connector on the harness between PSU and PCB on LCT2 disconnected
Harness broken
PSU defective
PCB defective
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