Ricoh Aficio 480W Dolphin-C2 Service Manual page 156

SERVICE CALL CONDITIONS
SC351 D ID sensor error 2 - Vsg
Vsg is 0V or more than 2.5 V.
During the copy cycle, this SC is
displayed after the copy is
executed.
SC352 D ID sensor error 3 - Pattern
Pattern voltage less was less
than 2.5 V and cannot be
detected. During the copy cycle,
this SC is displayed after the
copy is executed.
SC353 D ID sensor error 4 - LED
LED drive current (PWM value)
is 255 or 0. This SC could occur
while the ID sensor is initializing.
SC354 D ID sensor error 5 - Timeout
Vsg cannot be adjusted to 4
±0.2V within 20 s. This SC could
occur while the ID sensor is
initializing.
• ID sensor defective
• ID sensor connector defective
• IOB malfunction
• CBG power pack defective
• Dirty ID sensor
• VDB defective
• LPH defective
• Possible Cause
• ID sensor defective
• ID sensor connector defective
• IOB malfunction
• CBG power pack defective
• Dirty ID sensor
• VDB defective
• LPH defective
• Possible Cause
• ID sensor defective
• ID sensor connector defective
• IOB malfunction
• CBG power pack defective
• Dirty ID sensor
• VDB defective
• LPH defective
• ID sensor defective
• ID sensor connector defective
• IOB malfunction
• CBG power pack defective
• Dirty ID sensor
• VDB defective
• LPH defective
4-4
28 April 2005