Replace Toner; Toner Low - Konica Minolta Bizhub 20p Service Manual

■ REPLACE TONER

Toner life end is detected. The number of the rotation for the develop roller reached upper
limit.
<User Check>
- Replace the toner cartridge.
Step
Harness connection failure of
toner sensor PCB ASSY
1
2 Toner sensor PCB ASSY failure
3 Panel PCB ASSY failure
4 Main PCB ASSY failure

■ TONER LOW

Low on toner.
<User Check>
- Replace the toner cartridge.
Step
Harness connection failure of
toner sensor PCB ASSY
1
2 Toner sensor PCB ASSY failure
3 Panel PCB ASSY failure
4 Main PCB ASSY failure
■ MAIN PCB FAILURE
<User Check>
- Turn the power off and on.
Step
1 Bug in the software
2 Main PCB failure
Cause
Cause
Cause
3-23
Remedy
Check the sensor performance following
the procedure in "Factory Inspection Mode"
in 1.3 Service Mode in Chapter
If any problem occurs, check the harness
connection of the toner sensor PCB ASSY,
then reconnect it.
Replace the toner sensor PCB ASSY.
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the sensor performance following
the procedure in "Factory Inspection Mode"
in 1.3 Service Mode in Chapter
If any problem occurs, check the harness
connection of the toner sensor PCB ASSY,
then reconnect it.
Replace the toner sensor PCB ASSY.
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
Remedy
Reinstall the latest firmware.
Replace the main PCB ASSY.
6.
6.
Confidential