T-28
(1)
Image reading system: Blank or black prints
<Sample of Image Quality Problem>
<Troubleshooting Procedures>d
Step
Check
Result
Action
1
Are there no bent connector pins on the
cables connecting the control boards,
are all connectors correctly plugged in,
and are no cables broken?
NO
Correctly plug in the connectors.
Replace connection cables.
2
Defective CIS.
YES Replace the CIS.
3
Improper charging.
YES Replace the HV1.
4
Defective PC Drum.
YES Replace the Drum Cartridge.
5
Improper Print Head unit.
YES Replace Print Head unit.
6
No Drum Cartridge.
YES Install a Drum Cartridge.
7
No Toner Cartridge.
YES Install a Toner Cartridge.
4011T035AA
4011T036AA
