Ricoh SP5 Series Service Manual page 388

SERVICE CALL CONDITIONS
SC329: Laser beam pitch adjustment error
-Definition- [B]
The LD unit home position sensor does not detect an on condition while
changing the LD unit position for correcting the LD position or changing the dpi.
- Possible causes -
• The laser beam pitch adjustment (SP2-109-3 and 4) was not done after
replacing the NVRAM or doing an NVRAM clear.
• The laser beam pitch adjustment (SP2-109-3 and 4) was not done after
replacing the LD unit.
• LD unit movement blocked because of incorrect connector routing
SC350-1: ID sensor error 1
-Definition- [D]
One of the following ID sensor output voltages was detected twice consecutively
when checking the ID sensor pattern.
1) Vsp ≥ 2.5V
2) Vsp = 0V
- Possible causes -
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• Charge or development power pack defective
• Dirty ID sensor
• Defect at ID sensor pattern writing area of the drum
SC350-2: ID sensor error 2
-Definition- [D]
One of the following ID sensor output voltages was detected twice consecutively
when checking the ID sensor pattern.
1) Vsg< 2.5V
2) Vsg = 0V
3) The ID sensor output voltage is 5.0V and the PWM signal input to the ID
sensor is 0 when checking the ID sensor pattern
- Possible causes -
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• Charge or development power pack defective
• Dirty ID sensor
• Defect at the ID sensor pattern writing area of the drum
7-6
June 30, 1998