Service manual

FrameMaker Ver5.5E(PC) CF3102/CF2002 TROUBLESHOOTING

02.06.13

T- 7 1

4. IMAGE QUALITY PROBLEMS

4-1. Descriptions of the “State Confirm” Function of Tech. Rep.

Mode Concerning Image Quality Problems

• As part of troubleshooting procedures, the numeric values set for “State Confirm” avail-

able from “Tech.Rep.Mode” canbeusedtoisolatethecauseoftheimageproblem.

(1) Table #

4025T568CA

Vb-C/-M/-Y/-Bk

• Shows the developing bias value of each

color of toner when an image is produced.

• Standard values: Around 400 V

Acorrectionismadetomaketheimage

lighter when the numeric value is greater.

Acorrectionismadetomaketheimage

darker when the numeric value is smaller.

IU, High Voltage Unit (Developing Bias)

Vg-C/-M/-Y/-Bk

• Shows the grid voltage value of each color

of toner when an image is produced.

• Standard values: Around 550 V

Acorrectionismadetomaketheimage

lighter when the numeric value is greater.

Acorrectionismadetomaketheimage

darker when the numeric value is smaller.

IU, High Voltage Unit (Developing Bias)

4025T569CA