Panasonic UF-8300 / UF-8200 / UF-7300 / UF-7200 (serv.man4) Service Manual ▷ View online
109
UF-7300/7200
UF-8300/8200
4.3.9.
Horizontal White Lines
Paper Travel
P
END
No
Yes
Clean, or replace the rollers.
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).
Unit (HVPS).
2. Replace the Power Supply Unit
(HVPS).
(HVPS).
Yes
No
1. Clean the BTR with a soft, dry
cloth.
cloth.
2. Replace the BTR.
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?
110
UF-7300/7200
UF-8300/8200
4.3.10. Improper Fusing (Printed image does not bond to the paper)
4.3.11. Voids in Solid Areas
END
Is the Fuser Unit normal?
No
Yes
Replace the Fuser Unit. (See Note)
START
No
Yes
Is the recording paper damp?
Replace the recording paper.
P
P
Paper Travel
END
No
Yes
Clean, or replace the rollers.
START
No
Yes
Is the recording paper damp?
Replace the recording paper.
Is the Toner Cartridge
operational?
operational?
Yes
No
Replace the Toner Cartridge.
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
111
UF-7300/7200
UF-8300/8200
4.3.12. Black Dots
4.3.13. Recording Paper Creases
P
Paper Travel
END
No
Yes
Clean, or replace the rollers.
START
Is the Toner Cartridge
operational?
operational?
Yes
No
Replace the Toner Cartridge.
Are the Fuser, and Pressure
Roller surfaces clean?
Roller surfaces clean?
START
No
Yes
Is the recording paper damp?
Replace the recording paper.
END
Are there any foreign particles
in the Fuser Unit?
Are the Fuser Rollers normal?
in the Fuser Unit?
Are the Fuser Rollers normal?
1. Remove any foreign particles, or
clean the stains.
clean the stains.
Are there any foreign particles
or damage in the paper path?
or damage in the paper path?
Yes
No
Remove any obstructions, and
clean the paper path.
clean the paper path.
No
Yes
Is the recording paper skewing?
Ensure the paper is set under the
Paper Separation Clips in the
Cassette.
Paper Separation Clips in the
Cassette.
No
Yes
2. Replace the Fuser Unit.
Paper Travel
112
UF-7300/7200
UF-8300/8200
4.3.14. Poor Printed Copy Quality
START
Is the Test Pattern printout
in Service Mode 3 normal?
in Service Mode 3 normal?
1. Replace the SC PCB.
2. Replace the Laser Unit (LSU).
3. Replace the Power Supply Unit.
4. Replace the Toner Cartridge .
2. Replace the Laser Unit (LSU).
3. Replace the Power Supply Unit.
4. Replace the Toner Cartridge .
END
Perform a receiving test
with the reference fax unit.
with the reference fax unit.
Is the printed copy correct?
Yes
No
Make a local copy.
No
Yes
Check the Transmission Block.
(CIS PCB, and SDR PCB)
(CIS PCB, and SDR PCB)
Is the received copy correct?
1. Check the SC PCB.
2. Check the FXB PCB.
3. Check the Telephone Line Cable.
4. Replace the SC PCB.
2. Check the FXB PCB.
3. Check the Telephone Line Cable.
4. Replace the SC PCB.
Yes
No
Is a poor copy printed only
when receiving from a
specific transmitter?
when receiving from a
specific transmitter?
Yes
No
Telephone line quality is poor.
(Refer to 4.5.)
(Refer to 4.5.)
The transmitting machine
may be defective.
may be defective.
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