1.SC Codes
312
4. Check if the spring of the pick-up solenoid is released or defective. (pick-up roller lowered)
5. Check that the 1st upper limit sensor connector is connected correctly.
6. Replace the 2nd upper limit sensor.
7. Check that 2nd upper limit sensor harness with the relay connectors is connected correctly.
8. Replace the 2nd upper limit sensor harness.
9. Check if an appropriate amount of paper is loaded.
10. Check that the pick-up solenoid harness with the relay connectors is connected correctly.
11. Replace the pick-up solenoid harness.
12. Replace the 2nd upper limit sensor.
13. Replace the main controller board.
SC740-23
Error Name
2nd Blower Fan Error (Cover Interposer Tray)
Pattern
B
Error Condition
An error is detected from the 2nd blower fan of the cover interposer tray.
Major Cause
ï‚· Power of downstream unit is not turned on.
ï‚· 2nd blower fan is defective / connector is disconnected.
ï‚· Harness is damaged.
ï‚· Main controller board is defective.
Solution
Not only check the sensor/actuator by eye, but also perform Input/Output Check.
1. Check if the relay connector of the I/F cable between the main controller board and the 2nd blower
fan is connected correctly.
2. Check if the 2nd blower fan connector is connected correctly.
3. Replace the 2nd blower fan harness.
4. If the 2nd blower fan is defective or damaged, replace the fan.
5. Replace the main controller board.
SC740-50
Error Name
Double Feed Detection Error (Cover Interposer Tray)
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