Process Control Error Conditions 
 
501 
No.  Result  Description  Possible Causes/Action 
Minimum  Gamma < 0.15  too low. 
•  Hardware defective. 
1.  Same as 53 
2.  Replace the toner supply 
pump 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 
Same as 53 
59  Sampling data error 
during gamma 
correction 
Not enough data can be sampled during 
the gamma correction. 
•  ID sensor pattern density is 
too high or low. 
•  Hardware defective 
Same as 53 
99  Unexpected error  Process control fails. 
•  Power Failure 
Check the power source. 
Vsg Adjustment Result 
SP3-323-001 to -010 (Vsg Adjustment Result) 
No.  Result  Description  Possible Causes/Action 
1  O.K  Vsg adjustment is correctly done.  - 
2  ID sensor 
adjustment error 
Vsg cannot be adjusted within 4.0 ±0.5V. 
•  Dirty ID sensor (toner, dust, or 
foreign material) 
•  Dirty transfer belt 
•  Scratched image transfer belt 
•  Defective ID sensor 
•  Poor connection 
•  Defective BICU 
1.  Clean the ID sensor. 
2.  Check the belt cleaning. Clean or 
replace the transfer belt. 
3.  Replace the image transfer belt. 
4.  Replace the ID sensor.