Ricoh A-C4 - Page 206

20 June 2005 SERVICE CALL CONDITIONS
4-5
Trouble-
shooting
LD unit beam pitch adjusted incorrectly 329 D
The LD unit HP sensor does not detect
the ON condition while changing the LD
unit position for correcting the LD
position or changing the dpi.
• After initialization of the SP modes,
SP2-109-3 or SP2-109-4 was not
executed.
• The harness is blocking the LD drive
(PCB), preventing adjustment of the
pitch.
Polygon motor error 1: On timeout 335 D
The XSCRDY signal did not go LOW
(Active) within 10 sec. after the polygon
motor was turned on.
• Polygon motor drive board I/F
harness loose, disconnected, or
damaged
• Polygon motor drive board defective
• Polygon motor defective
Polygon motor error 2: Off timeout 336 D
The XSCRDY signal did not go HIGH
(Inactive) within 3 sec. after the polygon
motor was turned off.
• Polygon motor drive board I/F
harness loose, disconnected, or
damaged
• Polygon motor drive board defective
• Polygon motor defective
Polygon motor error 3: XSCRDY signal
error
337 D
The XSCRDY signal did not go HIGH
(Inactive) after the polygon motor had
been rotating normally for 200 ms.
• Polygon motor drive board I/F
harness loose, disconnected, or
damaged
• Polygon motor drive board defective
• Polygon motor defective
Polygonal Mirror Motor Error 4:
Unstable Timeout
338 D
The XSCRDY signal is detected LOW)
(Active) after the polygonal mirror motor
switches on, but the signal is not
detected LOW after 1 s has elapsed,
and not detected after another 500 ms
has elapsed.
• I/F harness of the polygonal mirror
motor disconnected or defective.
• Polygonal mirror motor or polygonal
mirror motor driver defective.
• Polygonal mirror motor drive pulse is
not output incorrectly.
ID sensor pattern test error 350 D
One of the following ID sensor output
voltages was detected twice
consecutively when checking the ID
sensor pattern.
1) Vsp ≥ 2.5V
2) Vsg ≤ 2.5V
3) Vsp = 0V
4) Vsg = 0V
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• High voltage supply board defective
• ID sensor dirty
• Defect at ID sensor pattern writing
area of the drum
ID sensor Vsg test error 351 D
When the ID sensor was checked, the
ID sensor output voltage was 5.0V
while the PWM signal input to the ID
sensor was 0.
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connection
• I/O board (IOB) defective
• Scanning system defective
• High voltage supply board defective
• ID sensor dirty
• Defect at the ID sensor pattern
writing area of the drum