Table 2: Troubleshooting The Installation - NorthStar 961 Install Manual

Symptom
Power
Pressing the button doesn't power-up
the 961/962.
The head powers-up, but not the processor
(the processor's power indicator at the back
is not lit).
The head powers up, beeps when you
press its keys, and the backlight can be
operated up and down, but there isn't any
video.
Display
There is continuous or intermittent system
failure as evidenced by the display screen
flashing a "plaid" or multi-colored "waffle
weave" pattern.
There is continuous or intermittent system
failure as evidenced by a pulsing white flash
in a continuous repeating pattern on the
display screen.
961/962 INSTALLATION MANUAL Revision A

Table 2: Troubleshooting the installation

Possible solutions/reasons
•
Check the fuse and the power to the control head.
• Check the fuse and the power to the processor.
•
Check the coax cable between the head and the processor.
•
Set the
TEST
power to the processor is faulty, or the entire 961/962 may be
defective.
•
Verify that the processor's power indicator at the back of the
unit is lit.
•
Check the fuse and the power to the processor.
•
Check the coax cable between the head and the processor
and make sure it's properly terminated and connected. If a
spare known-good cable is available, temporarily substitute it
to see if the problem goes away.
•
Verify that the processor's power indicator at the back of the
unit is lit.
• Check the fuse and the power to the processor.
•
Check the coax cable between the head and the processor
and make sure it's properly terminated and connected. If a
spare known-good cable is available, temporarily substitute it
to see if the problem goes away. Be sure that the cable
length is more than 20 feet but less than 50 feet.
• If a test setup with a VGA monitor and keyboard is available,
call the Northstar Service Department for guidance
concerning in-depth troubleshooting of the system to
determine if the problem is the display or the processor.
•
This may be radar interference; for additional guidance, see
Table 4, "Troubleshooting radar interference," on page 41.
switch on the processor to the
position; if the processor doesn't power-up, then
SECTION TWO - Installation
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