Panasonic DP-3510 Service Manual page 164

4.3.14. Poor Printed Copy Quality
Is the Test Pattern printout
in Copier F1 Mode or Fax
Service Mode 3 normal?
Make a local copy.
Is the printed copy correct?
Perform a receiving test
with the reference fax unit.
Is the received copy correct?
Is a poor copy printed only
when receiving from a
specific transmitter?
The transmitting machine
may be defective.
Ver. 5.2
START
No
Yes
No
Yes
No
Yes
No
Yes
END
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
1. Replace the SPC PCB.
2. Replace the LSU.
3. Replace the HVPS.
4. Replace the Developer Unit.
Check the connections of
CN850/851 on the CCD PCB,
CN 55/56 on the SC PCB,
the Scanning Lamp.
1. Check CN390 on the FXB PCB.
2. Check CN22/25 on MJR PCB.
3. Check the Telephone Line Cord.
4. Replace the FXB PCB.
Telephone line quality is poor.
164
JAN 2006