Download Print this page

Advertisement

■ Completely blank
Step
Cause
Developing bias
voltage
1
conduction
failure
Scanner harness
of the laser unit
2
connection
failure
Laser unit failure
3
HVPS PCB
4
failure
Main PCB failure Is the problem solved
5

■ Image distortion

Step
Cause
Laser unit not
assembled
1
correctly
Incorrect
radiation angle of
scanner diode of
2
laser unit.
Scanner motor
rotation failure
Main PCB failure Is the problem solved
3
<User Check>
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Check
Are the electrodes on
the drum unit and
machine body dirty?
Is the scanner harness
of the laser unit
connected securely?
Is the problem solved
after replacing the laser
unit?
Is the problem solved
after replacing the
HVPS PCB ASSY?
after replacing the main
PCB ASSY?
Check
Is the laser unit
assembled into the
machine securely?
(Check if there is no
gap.)
Is the problem solved
after replacing the laser
unit?
after replacing the main
PCB ASSY?
3-36
Result
Remedy
Clean both electrodes.
(Refer to
Fig. 3-2, Fig.
Yes
Reconnect the scanner
harness of the laser unit.
No
Replace the laser unit.
Yes
Replace the HVPS PCB
Yes
ASSY.
Replace the main PCB
Yes
ASSY.
Result
Remedy
Assemble the laser unit
correctly and secure the
No
screw.
Replace the laser unit.
Yes
Replace the main PCB
Yes
ASSY.
3-3.)
Confidential

Advertisement

Table Of Contents

Troubleshooting

   Also See for Konica Minolta Bizhub 20p

   Related Manuals for Konica Minolta Bizhub 20p

Comments to this Manuals

Symbols: 0
Latest comments: