1.SC Codes
39
5. Replace the SBU board (lens block).
6. Replace the BiCU board.
7. Harnesses defective
Replace the harness between the SBU the BiCU (shielded cables/separate cables) and/or the
harness between the SBU and LEDB (FFC).
SC120-00
Error Name
Scanner Home Position Error 1
Pattern
D
Error Condition
The scanner HP sensor does not go OFF.
The machine falsely detects that the carriage is still in its home position, though it has already moved
away.
Major Cause
1. Timing belt, pulley, wire, or carriage are not installed correctly
2. Connectors are not connected properly
3. Scanner HP sensor (SEN104) is defective.
4. BiCU is defective.
5. Scanner motor is (STM107) is defective.
6. Harnesses are defective.
Solution
1. Timing belt, pulley, wire, or carriage not installed correctly
Check that the timing belt, pulley, or wire are installed correctly.
Reinstall if necessary.
2. Connectors not connected properly
Check all the connectors are properly connected.
Reconnect the connectors if necessary.
3. Replace the scanner HP sensor (SEN104).
4. Scanner motor driver/scanner drive control board (BiCU) defective
Replace the BiCU board.
5. Replace the scanner motor (STM107).
6. Replace the harnesses.
Check the scanner HP sensor by turning on/off the sensor. (SP5-803-200)
If the single-digit value of SP5-803-200 does not change, check the scanner HP sensor.
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