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1-3.
Diagnosis by Symptoms
• Possible causes of various problems and their remedies are shown below. Carry out trou-
bleshooting according to this table.
Note
• Print out the service call report and activity reports (TX/RX) to understand the system
settings and status before replacing boards or the system entirely, or correct a failure.
Item
Symptom
No.
No TX marker
stamps on docu-
ment
Cause
1
Is TX marker ON?
(Do you have TX marker
option?)
2
Does TX marker have ink
in it?
3
Any improvement after
replacing TX marker?
4
Are there any disconnec-
tions or hurts on TX
marker cable?
5
Is the voltage of +24V
supplied to CN10-1 of
ACR?
6
Any improvement after
replacing the cable
between MFB2 and
ACR?
7
Any improvement after
replacing ACR board?
8
Any improvement after
replacing MFB2 board?
YES Go to item 2.
Turn ON TX marker. (Install TX
NO
marker option.)
YES Go to item 3.
NO Replace TX marker.
YES Replace TX marker.
NO Go to item 4.
YES Replace TX marker.
NO Go to item 5.
YES Go to item 6.
Check the cable between ACR
NO
and PSU (including the fuse). If
the cable is OK, replace PSU.
Replace the cable between
YES
MFB2 and ACR.
NO Go to item 7.
YES Replace ACR board.
NO Go to item 8.
YES Replace MFB2 board.
NO Replace the PWB-A
T-9
Remedy
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