Konica Minolta bizhub 250 Service Manual page 538

Field Service Ver. 1.0 Aug. 2005
Item
Symptom
No.
Received 1
image is
squeezed
2
Clock mal- 1
functions
2
3
Neither 1
"Sending" nor
"Receiving"
2
are displayed.
3
4
5
6
7
EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Cause
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
(Proceed to anti-dew.)
Any improvement after replacing
the imaging unit?
No improper operation?
Any improvement after replacing
RAMS board?
Any improvement after replacing
MFBS board?
Is an alarm message on screen? YES Correct the failure and reset the alarm.
Is the external telephone on-
hooked?
Are you printing something such
as report?
Any improvement after replacing
Operating panel?
Any improvement after replacing
the cable between Operating
panel and BCRS?
Any improvement after replacing
FAX board?
Any improvement after replacing
MFBS board?
12. Troubleshooting
Remedy
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 Copier service manual
"Image quality problem".
YES Refer User's Guide for operation.
NO Go to item 2.
YES Replace RAMS board.
NO Go to item 3.
YES Replace MFBS board.
NO Replace the PWB-A.
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 BCRS.
NO Go to item 6.
YES Replace FAX board.
NO Go to item 7.
YES Replace MFBS board.
NO Replace the PWB-A
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