Section Seven: Troubleshooting And Servicing The 972 System; Troubleshooting Installation Problems - NorthStar 972 Installation Manual

SECTION SEVEN: Troubleshooting and
servicing the 972 system

Troubleshooting installation problems

Problem Area Symptom
POWER •
SYSTEM •
•
DISPLAY •
•
•
972 Installation Manual, Rev. B

SECTION SEVEN: Troubleshooting and servicing the 972 system

CAUTION! Make sure that the 972 doesn't interfere with any other on-board
systems. Check all other systems to ensure that their performance
doesn't degrade when the 972 is turned on.
PWR
pressing doesn't start the 972
the system locks up on a random basis
with no apparent pattern
system fails any initial self-tests
the 972 powers up, beeps, but there
isn't any video
the display screen dims after the 972
has been on for a certain time
color bars appear where the video
overlay image should be.
Possible Solutions/Reasons
•
check the fuse and the power to both
the 972 Control Head and Black Box
• PWR
press the briefly to turn the sys-
tem on
•
possible internal failure; call your
Northstar dealer or the Northstar Ser-
vice Department for advice
•
Possible internal failure; Check all wir-
ing, then call your Northstar dealer or
the Northstar Service Department for
advice
•
DVI cable may not be connected
•
input voltage may be too low
•
the display may have failed. Call your
Northstar dealer or the Northstar Ser-
vice Department
•
the 972 may be going into auto-dim-
ming mode (Auto-dimming helps
maintain the integrity of the display
and reduces power consumption
when the 972 is on and running too
hot for its current environment.)
•
check the video cables and the con-
nectors.
•
check that the video equipment is
working properly
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