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Troubleshooting/Maintenance
: Functional checks
144
High-voltage power supply check
The high-voltage power supply PCA provides the necessary voltages for the
electrophotographic processes.
Checking the toner cartridge connection points
Visually inspect the three connection points on the underside, right end of the toner
cartridge: charging (callout 1), drum ground (callout 2), and developing roller (callout
3). If they are dirty or corroded, clean the connections, or, if they are damaged,
replace the toner cartridge.
Note
Use only alcohol to clean the connections.
Figure 5-5 Toner cartridge high-voltage connection points
Checking the high-voltage connector assembly
The assembly uses three spring-loaded pins to contact the toner cartridge: charging
(callout 1), drum ground (callout 2), and developing roller (callout 3). Verify that the
pins are not dirty or corroded and that the spring-loading action is functional. If the
pins are dirty, clean them using alcohol only. If they are damaged, replace the high
voltage connector assembly.
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