Olivetti FK-507 Service Manual page 107

8. Troubleshooting
Item
Symptom
No.
2 Any improvement after replacing
Received
the imaging unit?
image is too
light or faded.
Received 1 Are characters of copied image or
image is a test image also squeezed?
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.
B.
C.
2 Any improvement after replacing
the imaging unit?
Clock mal- 1 Improper operation?
functions
2 Any improvement after replacing
RAMU board?
3 Any improvement after replacing
MFBU board?
Neither 1 Is an alarm message on screen?
"Sending" nor
"Receiving"
2 Is the external telephone on
are displayed.
hook?
3 Are you printing something such
as report?
4 Any improvement after replacing
operating panel?
5 Any improvement after replacing
the cable between operating
panel and BCRU board?
6 Any improvement after replacing
FAXU board?
7 Any improvement after replacing
MFBU board?
100
Cause
Failure in board of scanner
unit
Improper adjustment of opti-
cal focus
Dew on optical lenses (Pro-
ceed antidew procedure.)
Service Manual
Field Service Ver. 2.0 Dec. 2008
Remedy
YES Replace the imaging unit.
NO For details see main service manual
"Image quality problem".
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.
YES Replace the imaging unit.
NO For details see main service manual
"Image quality problem".
YES Refer User's Guide for operation.
NO Go to item 2.
YES Replace RAMU board.
NO Go to item 3.
YES Replace MFBU board.
NO Replace the machine.
YES Correct the failure and reset the alarm.
NO Go to item 2.
YES Go to item 3.
NO Set the external telephone off-hook
then press the communication switch.
YES Proceed to communication after com-
pleting print jobs.
NO Go to item 4.
YES Replace operating panel.
NO Go to item 5.
YES Replace the cable between operating
panel and BCRU board.
NO Go to item 6.
YES Replace FAXU board.
NO Go to item 7.
YES Replace MFBU board.
NO Replace the machine.
Y109971-7