Ricoh A-P3 Service Manual page 116

6 November, 2001
SC Level
327 B LD unit H.P. error 1
The LD unit H.P. sensor does not
detect the on condition when the LD
unit moves to its home position.
328 B LD unit H.P. error 2
The LD unit H.P. sensor does not
detect an off condition when the LD
unit moves from its home position.
329 B LD unit beam pitch adjusted
incorrectly
The LD unit H.P. sensor does not
detect the ON condition while
changing the LD unit position to
correct the LD position or to adjust
the dpi.
ID S
ENSOR
350 C ID sensor pattern test error
One of the following ID sensor output
voltages was detected twice
consecutively when checking the ID
sensor pattern.
Vsp ≥ 2.5 V
Vsg ≤ 2.5 V
Vsp = 0 V
351 C ID sensor Vsg test error
When ID sensor checks the drum
surface, V
352 C ID sensor edge detect pattern error
At 800 ms intervals, the value of the
ID sensor edge pattern voltage was
not 2.5 V for 2 consecutive attempts.
Symptom
= 0, or PWM = 0
SG
4-3
SERVICE CALL CONDITIONS
Possible Cause
• H.P. sensor/harness defective
• LD unit home position sensor
defective
• LD positioning motor harness
defective
• LD unit movement blocked
because of incorrect connector
routing
• H.P. sensor/harness defective
• LD positioning/harness motor
defective
• LD unit movement blocked
because of incorrect connector
routing
• After initialization of the SP
modes, SP2109-03 or SP2109-04
was not executed.
• The harness is blocking the LD
drive (PCB), preventing
adjustment of the pitch
• 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 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
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector
connection
• I/O board (IOB) defective
• High voltage supply board
defective
• Dirty ID sensor
• Defect at the ID sensor pattern
writing area of the drum