8. Troubleshooting
Field Service Ver. 2.0 Dec. 2008
100
FK-507
T
roubleshooting
Received
image is too
light or faded.
2
Any improvement after replacing
the imaging unit?
YES Replace the imaging unit.
NO
For details see main service manual
“Image quality problem”.
Received
image is
squeezed
1
Are characters of copied image or
a test image also squeezed?
Improper setting of document
contrast: Received image of small
characters or blue copies with
“contrast” switch set “Darker”.
Error in remote machine:
The following causes are possi-
ble:
A.
Failure in board of scanner
unit
B.
Improper adjustment of opti-
cal focus
C.
Dew on optical lenses (Pro-
ceed antidew procedure.)
YES Failure in the remote side (improper
setting of document contrast, and error
in the transmission unit of the remote
terminal).
NO
Go to item 2.
2
Any improvement after replacing
the imaging unit?
YES Replace the imaging unit.
NO
For details see main service manual
“Image quality problem”.
Clock mal-
functions
1
Improper operation?
YES Refer User’s Guide for operation.
NO
Go to item 2.
2
Any improvement after replacing
RAMU board?
YES Replace RAMU board.
NO
Go to item 3.
3
Any improvement after replacing
MFBU board?
YES Replace MFBU board.
NO
Replace the machine.
Neither
“Sending” nor
“Receiving”
are displayed.
1
Is an alarm message on screen?
YES Correct the failure and reset the alarm.
NO
Go to item 2.
2
Is the external telephone on
hook?
YES Go to item 3.
NO
Set the external telephone off-hook
then press the communication switch.
3
Are you printing something such
as report?
YES Proceed to communication after com-
pleting print jobs.
NO
Go to item 4.
4
Any improvement after replacing
operating panel?
YES Replace operating panel.
NO
Go to item 5.
5
Any improvement after replacing
the cable between operating
panel and BCRU board?
YES Replace the cable between operating
panel and BCRU board.
NO
Go to item 6.
6
Any improvement after replacing
FAXU board?
YES Replace FAXU board.
NO
Go to item 7.
7
Any improvement after replacing
MFBU board?
YES Replace MFBU board.
NO
Replace the machine.
Symptom
Item
No.
Cause
Remedy
Service Manual Y109
97
1-7