Ricoh A-P4, Руководство по обслуживанию

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• Polygon motor defective
337 D
Polygon motor error 3: XSCRDY signal er-
ror
• Polygon motor drive board I/F har-
ness loose, disconnected, or dam-
aged
• Polygon motor drive board defective
• Polygon motor defective
The XSCRDY signal did not go HIGH (In-
active) after the polygon motor had been
rotating normally for 200 ms.
338 D
Polygonal Mirror Motor Error 4: Unstable
Timeout
• I/F harness of the polygonal mirror
motor disconnected or defective.
• Polygonal mirror motor or polygonal
mirror motor drive board defective.
The XSCRDY signal was detected LOW)
(Active) after the polygonal mirror motor
switched on, but the signal was not detect-
ed LOW after 1 sec., and was not detected
after another 500 ms.
350 D
ID sensor pattern test error
• ID sensor defective
• ID sensor harness or connector loose, bro-
ken, defective
• IOB defective
• HVPS board defective
• ID sensor dirty
One of the following ID sensor output
voltages was detected twice consecu-
tively when checking the ID sensor pat-
tern.
1. Vsp greater/equal 2.5V
2. Vsg less than/equal 2.5V
3. Vsp = 0V
4. Vsg = 0V
351 D
ID sensor Vsg measurement error • ID sensor connector or harness loose,
broken, or defective
• ID sensor defective
• IOB defective
• HVPS defective
• ID sensor dirty
When the ID sensor was checked twice, the
ID sensor output voltage was 5.0V while the
PWM signal input to the ID sensor was 0.
352 D
ID sensor pattern edge detection error
• ID sensor connector or harness loose,
broken, or defective
4. Troubleshooting
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