Gp 9.4 Developer Bias Voltage - Xerox DocuPrint C55 Service Manual

GP 9.4 DEVELOPER BIAS
VOLTAGE CHECK
PURPOSE
The purpose of this check is to ensure that the
Developer Bias Voltage is within specifications.
Note: During normal operation the Developer
Bias voltage is determined by the Process
Control Setup. It will be between –450 and
-650 volts when the color is being developed.
1. Set up the multimeter to read 500 VDC.
2. Enter Normal Diagnostics (Menu [3] +
Enter [7], Power ON).
3. Use Menu [3] to scroll to VOL TEST MAIN
CH.
4. Use Next [6]/Previous [5] to scroll to VOL
TEST DV BIAS.
5. Press Form Feed [1] to switch on the High
Voltage Power Supply Developer Bias.
6. (Figure 1): Connect the Meter to the Bias
voltage to be checked.
7. The voltage should be – 400 ±50 V.
8. Press Media Server [2] to switch the
Power Supply off.
NOTE: Do not keep the power supply on any
longer than necessary.
NOTE: During print expect the voltage to be from
– 250 to – 500 volts
DocuPrint C55/C55mp/[NC60]
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Figure 1. Checking the Developer Bias
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GENERAL PROCEDURES
GP 9.4