Ricoh D143 Field Service Manual page 876

6. Troubleshooting
No. Result
ID sensor
coefficient (K5)
54
maximum/
minimum error
Gamma error:
55
Maximum
Gamma error:
56
Minimum
Vk error:
57
Maximum
Vk error:
58
Minimum
Sampling data
error during
59
gamma
correction
Unexpected
99
error
874
Description
When the K5 is more
than the value of
SP3-362-003 or less
than the value of
SP3-362-004, the error
54 is displayed.
Gamma is out of range.
5.0 < Gamma
Gamma is out of range.
Gamma < 0.15
Vk is out of range.
150 < Vk
Vk is out of range.
Vk < –150
Not enough data can be
sampled during the
gamma correction.
Process control fails.
Possible Causes/Action
• ID sensor pattern density is too high or low.
• ID sensor or shutter is defective.
Same as 53
• ID sensor pattern density is too high.
• Hardware defective.
Same as 53
• ID sensor pattern density is too low.
• Hardware defective.
1. Same as 53
2. Replace the toner supply pump unit.
• ID sensor pattern density is too low.
• Hardware defective.
Same as 53
• ID sensor pattern density is too high.
• Background dirty
• Hardware defective
Same as 53
• ID sensor pattern density is too high or low.
• Hardware defective
Same as 53
• Power Failure
Check the power source.