Specifications

3
Flowcharts and TablesTroubleshooting
All-Black Page (Continued)
Step Check Result Action
3 Connect the multimeter
between connectors P15-7
and P15-1 on the DC
controller board. Does the
voltage measure +24 VDC
when you switch on the
printer?
No Go to Table 11, Power Supply Failure
(+24 VDC).
4 Is there continuity between
CRU (spring plate) on the
high-voltage contact
assembly and jack CR on
the high-voltage power
supply?
No Replace the high-voltage contact
assembly.
5 Is there continuity between
P15 on the DC controller
board and P111 on the
high-voltage power supply?
Yes Replace the toner cartridge sensor
and high-voltage power supply cable.
6 Replace the DC controller
board. Does the print
quality improve?
Ye s
No
Problem solved.
Replace the high-voltage power
supply.
Table 17. Light/Faded Image
Step Check Result Action
1 Replace the toner cartridge.
Does the print quality
improve?
Yes Problem solved.
2 Reload the paper cassette
tray with known-good
paper. Does the print quality
improve?
Yes Problem solved.