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Code :

Code: SC321
Description: No laser start signal (F-GATE error)
The CPU does not detect the laser start signal (F-GATE) after the copy paper reaches the registration sensor.
Causes: • BiCU board defective • MSU board defective

Code: SC322
Description: Laser synchronization error
The laser synchronization signal cannot be detected by the main scan synchroniziation detector board for more than 5 consecutive 100 intervals.
Causes: • Poor connection of the interface harness which connects the laser synchronization detector board and the BiCU board • Laser synchronization detector board out of position • Laser synchronization detector board defective • BiCU board defective

Code: SC324
Description: LD drive current over
The LD drive board applies more than 100 mA to the LD.
Causes: • LD unit defective (not enough power, due to aging) • Poor connection of the interface harness which connects the LD unit and the BiCU board • Temperature around the LD unit is too high

Code: SC390
Description: TD sensor error 1
The TD sensor outputs less than 0.5V, 20 s after the TD sensor initial setting has been performed.
Causes: • TD sensor abnormal • Poor connection of the PCU

Code: SC391
Description: Development bias leak
A development bias leak signal is detected.
Causes: • Poor connection of the PCU • High voltage supply board defective

Code: SC393
Description: TD sensor error 2
TD sensor output voltage falls out of the adjustment range (2.0 ± 0.2 V) after the TD sensor initial setting has been finished.
Causes: • TD sensor abnormal • Poor connection of the PCU

Code: SC401
Description: Transfer roller leak error 1
A transfer roller current leak signal is detected.
Causes: • High voltage supply board defective • Poor connection of the PCU • Transfer roller damaged

Code: SC402
Description: Transfer roller leak error 2
A transfer roller current leak signal is detected.
Causes: • High voltage supply board defective • Poor connection of the PCU • Transfer roller damaged

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