Panasonic UF-8300 / UF-8200 / UF-7300 / UF-7200 (serv.man4) Service Manual ▷ View online
105
UF-7300/7200
UF-8300/8200
4.3.5.
Vertical Dark Lines
Carefully wipe the Corona Wire in the Toner Cartri]ge by sliding a dry Cotton Swab
from end to end a few times.
from end to end a few times.
Paper Travel
P
START
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
operational?
No
Yes
Are there any foreign particles
or stains on the BTR?
or stains on the BTR?
Yes
No
2. Replace the Toner Cartridge.
1. Clean the BTR with a soft, dry
cloth.
2. Replace the BTR.
cloth.
2. Replace the BTR.
Is the Laser Unit (LSU)
normal?
normal?
No
Yes
Replace the Laser Unit (LSU).
END
No
Yes
Clean, or replace the rollers.
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
1. Clean the Corona Wire as
illustrated below.
illustrated below.
Corona Wire
106
UF-7300/7200
UF-8300/8200
4.3.6.
Horizontal Dark Lines
Paper Travel
P
START
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
Yes
No
Replace the Toner Cartridge.
1. Clean the BTR with a soft,
dry cloth.
dry cloth.
2. Replace the BTR.
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
operational?
No
Yes
Is the Laser Unit (LSU) normal?
No
Yes
Replace the Laser Unit (LSU).
Is the Power Supply Unit
(HVPS)
(HVPS)
1. Check all connectors, and
voltages on the Power
Supply Unit .
2. Check the Connector, and
voltage on the Power Supply
Unit (HVPS).
voltages on the Power
Supply Unit .
2. Check the Connector, and
voltage on the Power Supply
Unit (HVPS).
3. Replace the Power Supply
Unit (HVPS).
Unit (HVPS).
Yes
No
END
No
Yes
Clean, or replace the rollers.
Are there any foreign
particles, or stains on the BTR?
particles, or stains on the BTR?
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
normal?
107
UF-7300/7200
UF-8300/8200
4.3.7.
Dark Background
Paper Travel
P
Is the Laser Unit (LSU) normal?
No
Yes
Replace the Laser Unit (LSU).
START
No
Yes
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
operational?
No
Yes
Is the recording paper damp?
Yes
No
Replace the recording paper.
Replace the Toner Cartridge.
Is the Power Supply Unit
(HVPS) normal?
(HVPS) normal?
1. Check all connectors, and
voltages on the Power Supply
Unit (HVPS).
voltages on the Power Supply
Unit (HVPS).
2. Replace the Power Supply Unit
(HVPS).
(HVPS).
Yes
No
END
No
Yes
Clean, or replace the rollers.
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
108
UF-7300/7200
UF-8300/8200
4.3.8.
Light Print
Paper Travel
END
No
Yes
START
No
Yes
Is the printout in Service
Mode 3 normal?
Mode 3 normal?
Check the Scanner mechanism.
Is the Toner Cartridge
operational?
operational?
No
Yes
Is the recording paper damp?
Yes
No
Replace the paper.
Replace the Toner Cartridge.
Are there any foreign particles, or
stains blocking the Laser Unit
path?
stains blocking the Laser Unit
path?
Yes
No
1. Remove the particles from the
laser beam path, or clean the stains.
2. Replace the LSU.
laser beam path, or clean the stains.
2. Replace the LSU.
Is the Power Supply Unit (HVPS)
normal?
normal?
1. Check all connectors, and
voltages on the Power Supply Unit
(HVPS).
2. Replace the Power Supply Unit
(HVPS) .
voltages on the Power Supply Unit
(HVPS).
2. Replace the Power Supply Unit
(HVPS) .
Yes
No
Clean, or replace the rollers.
Are the Fuser, and Pressure Roller
surfaces clean?
surfaces clean?
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