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SECTION SEVEN: Troubleshooting and servicing the 957 system
Page 56 957 INSTALLATION MANUAL, Revision C1
DISPLAY (cont.)
•
The display screen dims, either slightly
or more, after the 957 has been on for a
certain time.
•
The message
8117 FAILURE
appears
where the video input image should be.
•
Color bars appear where the video
overlay image should be.
•
The 957 may be implementing its
auto-dimming mode. Auto-dimming
helps maintain the integrity of the
display and reduce power
consumption when the 957 is on and
running too hot for its current
environment. In this case the display
screen may automatically dim.
•
The internal 8117 has failed; contact
the Northstar Service Department.
(This failure affects only the video
image, nothing else.)
•
Check that the video image is turned
on (press
STAR
to display the
VIDEO SETUP
screen).
•
Check the cables and the connectors.
•
Check that the video equipment is
working properly.
SYSTEM
System lock-ups
Hardware-related:
•
The system locks up on a random basis
with no apparent pattern.
•
The system locks up when using a chart
card.
•
System fails any initial self-tests.
•
Possible internal hardware failure; call
the Northstar Service Department.
•
Possible bad chart card. Remove the
card, and inspect the pin area of the
card and the 957 for damage. If the
pins in the 957 are bent or damaged,
to prevent further damage, don’t
insert another card. If you’re sure that
the card pins aren’t bent, try inserting
a new card (turn power off before
inserting the card).
•
Possible internal hardware or
software failure; call the Northstar
Service Department.
Table 10: Troubleshooting the 957 installation (continued)
Problem Area Symptom Possible Solutions/Reasons