Ricoh S-P2 Service Manual page 59

2nd beam laser synchronization error
With all doors closed the polygon motor is
326 B
locked and not rotating, or the laser
synchronization detector could not detect 2nd
beam laser detection signal within 500 ms.
Development bias leak
391 B
A development bias leak signal was detected
for 200 ms.
Main motor error
The machine does not detect a main motor lock
signal within 700 ms after the main motor
started to rotate.
-or-
The machine detects a main motor lock signal
500 B
within 500 ms after the main motor started to
rotate, after that, the main motor lock signal
does not detect within 200ms.
-or-
The machine does not detect a main motor lock
signal within 200 ms after the main motor
switched off.
Fusing thermistor error
The fusing temperature did not rise higher than
o
20 C within 10 sec. after the main motor
switched off.
541 A
-or-
The fusing temperature was detected lower
o
than 0 C for over 1 sec. after the power relay
switched on.
Fusing temperature warm-up error
542 A
Service Call Conditions
• Laser synchronization detector
board out of position
• LD unit defective
• Engine board defective
• High voltage supply board
defective
• Defective cartridge connection
• Main motor defective
• Mechanical overload on the drive
mechanism
• Thermistor disconnected, defective
• Fusing lamp disconnected,
defective
• Fuse blown
• Power supply board defective
• Fusing unit connected improperly
• Thermistor defective
• Fusing lamp open
4
57