Poor Transmitted Copy Quality - Panasonic DF-1100 Service Manual

Panasonic DF–1100

4.6.2 Poor Transmitted Copy Quality

START
Make a copy.
Is the printed copy normal?
Yes
Perform a transmission test
to a reference fax unit.
Is the transmitted copy
normal?
Yes
Does poor transmitted copy
appear when transmitting to
a specific receiver?
Yes
The receiving unit may be
defective.
END
4–38
No
Is the Xenon Lamp lit?
Yes
Are CN12 (FCB PCB) and No
CN30 (CCD PCB)
connected properly?
1. Replace the Scanner
Block.
2. Replace the FCB PCB.
No
1. Check CN7 (FCB PCB)
and CN25 (LCE PCB).
2. Check the telephone cord.
Replace if necessary.
No
Telephone line quality is
poor.
No
No
Does CN 10, pins 1 and 2, of
the FCB PCB measure
+24 VDC?
Yes
No
Does nLEDON go Low when
the scan starts?
Yes
Check CN 11 on the FCB
PCB and the LED harness.
Does the problem still
occur?
Yes
Replace the Xenon Lamp
and Inverter PCB.
Connect them correctly.
Replace the LVPS.
Replace the FCB PCB.