Ricoh V-C3 D081 Field Service Manual page 840

4. Appendix: Service Program Mode Tables
19-22 Tnr Density Corr:K,M,C,Y
23-26 Toner Use Count:K,M,C,Y
27-30 TnrDensity:K,M,C,Y
31-38 Environ Corr 1-8:K
39-46 Environ Corr 1-8:Col
47-56 Time Lapse Corr 1-10:K
57-71 Time Lapse Corr 1-15:Col
4
3562 Display Vk
Display Vk (Development Start Voltage)
Displays Vk, the development start voltage. This development start voltage is used to indicate
whether the developer has deteriorated. However, this is only a rough measurement due to
other factors:
• A low threshold setting for the target development gamma.
• Operational variations between machines
• Precision of the ID sensor measurements
Normal range for Vk: -150V to +150V
1 K
2 M
3 C
4 Y
3563 Display Vr
Display Vr (Residual Potential)
Vr is the potential that remains on the surface of the drum after full exposure to the laser. The
existence of this residual voltage is used as an indicator to determine the level of deterioration
of the drum. Vr becomes larger as the drum deteriorates.
Normal range for Vr: -200V to 0V
262
[-300 to +300/1 V]