Ricoh Aficio MP C2050 Service Manual

Process Control Error Conditions
SM Appendix 5-3 D037/D038/D040/D041
Appendix:
Process
Control Error
Conditions
No. Result Description Possible Causes/Action
1. Replace the development unit.
2. Replace the BCU board.
53
ID sensor
coefficient
(K5) detection
error
Not enough data can
be sampled.
 Solid image is not sufficient density:
1. Retry the process control.
2. Replace the ID sensors.
3. Replace the BCU board.
 Solid image is O.K.
1. Replace the ID sensors.
2. Replace the BCU board.
 ID sensor is dirty:
1. Clean the ID sensors.
2. Retry the process control.
54
ID sensor
coefficient
(K5)
maximum/
minimum error
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.
 ID sensor pattern density is too high
or low.
 ID sensor or shutter is defective.
Same as 53
55
Gamma error:
Maximum
Gamma is out of
range. 5.0 < Gamma
 ID sensor pattern density is too high.
 Hardware defective.
Same as 53
56
Gamma error:
Minimum
Gamma is out of
range.
Gamma < 0.15
 ID sensor pattern density is too low.
 Hardware defective.
1. Same as 53
2. Replace the toner hopper unit.
57
Vk error:
Maximum
Vk is out of range.
150 < Vk
 ID sensor pattern density is too low.
 Hardware defective.
Same as 53
58
Vk error:
Minimum
Vk is out of range.
Vk < –150
 ID sensor pattern density is too high.
 Background dirty
 Hardware defective

Ricoh Aficio MP C2050 Specifications