Read Panasonic DX-600 / DX-800 Service Manual online
121
DX-600/800
APR 2002
Edition 1.0
4.4.14.
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
(CN30 on the CCD PCB and CN7 on
the SC PCB.
(CN30 on the CCD PCB and CN7 on
the SC PCB.
Is the received copy correct?
1. Check the CN18 on the SC PCB.
2. Check the CN28 and 29 on the
MJR PCB.
3. Check the Telephone Line Cable.
4. Replace the SC PCB.
2. Check the CN28 and 29 on the
MJR 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 4.6.)
(Refer to 4.6.)
The transmitting machine
may be defective.
may be defective.
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