Panasonic UF-8300 / UF-8200 / UF-7300 / UF-7200 (serv.man4) Service Manual ▷ View online
101
UF-7300/7200
UF-8300/8200
4.3.
Printed Copy Quality Problems
4.3.1.
Black Copy
Paper Travel
START
No
Yes
Check the Scanner mechanism.
Is the Power Supply
Unit normal?
Unit normal?
Is the SC PCB normal?
Is the Toner Cartridge
operational?
operational?
Replace the Toner Cartridge.
1. Check all connectors, and voltages
on the Power Supply Unit.
2. Check the contacts between PSU,
and Toner Cartridge.
3. Replace the PSU.
on the Power Supply Unit.
2. Check the contacts between PSU,
and Toner Cartridge.
3. Replace the PSU.
Yes
No
Yes
Yes
No
No
1. Check all connectors, and voltages
on the SC PCB.
2. Replace the SC PCB.
on the SC PCB.
2. Replace the SC PCB.
END
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
Is the SPC PCB normal?
Yes
No
1. Check all connectors, and voltages
on the SPC PCB.
2. Replace the SPC PCB.
on the SPC PCB.
2. Replace the SPC PCB.
102
UF-7300/7200
UF-8300/8200
4.3.2.
Blank Copy
Paper Travel
START
Check the Scanner mechanism.
Are there any foreign particles or
stains on the BTR?
stains on the BTR?
Is the Toner Cartridge operational?
Is the Power Supply Unit normal?
END
Yes
Yes
Yes
No
No
No
Replace the Toner Cartridge.
Yes
No
1. Clean the BTR with a soft, dry cloth.
2. Replace the BTR.
2. Replace the BTR.
1. Check all connectors, and
voltages on the Power Supply Unit.
2. Check the Connector, and
voltage on the Power Supply Unit.
3. Replace the Power Supply Unit.
voltages on the Power Supply Unit.
2. Check the Connector, and
voltage on the Power Supply Unit.
3. Replace the Power Supply Unit.
Are there any foreign particles or
stains blocking the Laser Beam path?
stains blocking the Laser Beam path?
Yes
No
Is the SC PCB normal?
1. Remove the particles from the
laser beam path, or clean the stains.
2. Replace the Laser Unit (LSU).
laser beam path, or clean the stains.
2. Replace the Laser Unit (LSU).
1. Check all connectors, and voltages
on the SC PCB.
2. Replace the SC PCB.
on the SC PCB.
2. Replace the SC PCB.
Yes
No
Is the printout in Service Mode 3
normal?
normal?
Yes
No
Is the SPC PCB normal?
1. Check all connectors, and voltages
on the SPC PCB.
2. Replace the SPC PCB.
on the SPC PCB.
2. Replace the SPC PCB.
103
UF-7300/7200
UF-8300/8200
4.3.3.
Vertical White Lines
Paper Travel
P
START
END
Replace the recording paper.
Yes
No
Replace the Toner Cartridge .
Are there any foreign particles
or stains blocking the Laser
Beam path?
or stains blocking the Laser
Beam path?
No
1. Clean the BTR with a soft, dry cloth.
2. Replace the BTR.
2. Replace the BTR.
Yes
No
Clean, or replace the rollers.
No
Yes
Check the Scanner mechanism.
No
Yes
Yes
Is the recording paper damp?
Is the Toner Cartridge
operational?
operational?
1. Remove the particles from the laser
beam path, or clean the stains.
2. Replace the Laser Unit (LSU).
beam path, or clean the stains.
2. Replace the Laser Unit (LSU).
Are there any foreign particles
or stains on the BTR?
or stains on the BTR?
No
Yes
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
104
UF-7300/7200
UF-8300/8200
4.3.4.
Ghost Images
Paper Travel
A
A
A A A
START
END
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
operational?
No
Yes
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
No
Yes
Is the recording paper damp?
Are there any foreign particles
or stains on the BTR?
or stains on the BTR?
No
Yes
Yes
No
Replace the recording paper.
Replace the Toner Cartridge.
1. Clean the BTR with a soft,
dry cloth.
2. Replace the BTR.
dry cloth.
2. Replace the BTR.
Clean, or replace the rollers.
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
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