101
4.6.2.
Poor Transmitted Copy Quality
Make a copy.
Is the printed copy
normal?
Is the transmitted
copy normal?
The receiving unit
may be defective.
Telephone line quality
is poor.
Is the CIS LED
lit?
Replace the Low
Voltage Power
Supply Unit.
Replace the SC
PCB.
Replace the CIS.
Connect it correctly.
Does CN3, pin 7 on
SC PCB measure
+24 VDC?
Does CN3, pin 6
measure 0V when
the scan starts?
Is CN3 on the
SC PCB
connected properly?
Perform a transmission
test to a reference
fax unit.
Does poor transmitted
copy appear only
when transmitting to a
specific receiver?
(1) Replace the CIS.
(2) Replace the SC PCB.
Check the Telephone Line Cable.
Replace the SC PCB.
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
START
END
Summary of Contents for Panafax UF-490
Page 2: ...2 ...
Page 15: ...15 1 4 Control Panel For USA and Canada For Other Countries ...
Page 37: ...37 24 Remove the Pressure Roller 322 25 Remove the Exit Roller 304 24 25 ...
Page 63: ...63 3 10 ILS PC Board CN73 Refer to SC PC Board CN11 ...
Page 65: ...65 3 12 ACI PC Board Refer to Power Supply Unit CN101 ...
