Ricoh D131 Service Manual page 484

ID sensor adjustment error: LED output abnormal
One of the following ID sensor output voltages is detected at ID
sensor initialization.
C


SC370-01




-




ID sensor adjustment error: Timeout error
C
Vsg falls out of the adjustment target (4.0 ±0.2V) during Vsg
checking within 20 sec.


SC370-11


-




SM Appendix
Vsg less than 4.0V when the maximum PWM input (255) is
applied to the ID sensor.
Vsg greater than or equal to 4.0V when the minimum PWM
input (0) is applied to the ID sensor.
ID sensor defective
ID sensor harness disconnected
ID sensor connector defective
IOB defective
ID sensor pattern not written correctly
Incorrect image density
Charge power pack defective
ID sensor dirty
ID sensor defective
ID sensor harness disconnected
ID sensor connector defective
IOB defective
ID sensor pattern not written correctly
Incorrect image density
Charge power pack defective
ID sensor dirty
2-17
SC300: Image Development 1
D131/D132/D133