Ricoh MP C6502SP Field Service Manual page 1066

5. Troubleshooting
SC No.
SC No.
SC371-01
SC371-02
SC371-03
1064
Level Error Name/Error Condition/Major Cause/Solution
The voltage reading during process control for Vsg_reg was not within
the correct range (4.0 ± 0.5 V).
Details:
Vsg_reg is the voltage reading of the light reflected directly from the bare
surface of the ITB. ID sensor calibration adjusts the LED current so that
Vsg_reg becomes 4.0 ± 0.5 V.
Adjustment flow:
1. Vsg_reg confirmation
If Vsg_reg is smaller than 0.5V, SC371-0X is issued and process
control ends.
2. ID sensor calibration
Fluctuates the LED current and measures Vsg_reg.
3. LED current upper limit check
OK: Proceeds to Vsg upper/lower limit check
NG: SC372-0X is issued; proceeds to Vsg upper/lower limit check
4. Vsg upper/lower limit check
OK: Process control continued
NG: SC370-0X is issued and process control ends.
• ITB deformed, out of position or damaged
• Check the ITB.
• Fix the ITB if it is deformed, out of position, etc.
Level Error Name/Error Condition/Major Cause/Solution
D ID sensor output error (F)
D ID sensor output error (C)
D ID sensor output error (R)