Ricoh D025 Service Manual page 554

Process Control Error Conditions
No. Result
ID sensor
coefficient
54 (K5)
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
D023/D025
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.
4-4 SM Appendix