NorthStar GM1708 961X Installation Manual page 43

Table 2: Troubleshooting the installation (continued)
Problem Area Symptom
POWER (cont'd) The control head powers-up, but not the
processor (the processor's power indicator
at the back of the unit is not lit).
POWER (cont'd) The control head powers up, beeps, 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 the display screen
flashing a pulsing white flash in a continu-
ous repeating pattern.
961 INSTALLATION MANUAL Revision A
SECTION TWO - Installation
Possible Solutions/Reasons
•
Check the fuse and the power to the
processor.
•
Check the coax cable between the
head and the processor.
TEST-POWER
•
Set the
TEST
the processor to the
the processor doesn't power-up, then
power to the processor is faulty, or the
entire unit may be defective.
•
Verify that the processor's power indi-
cator 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 con-
nected. If a spare known-good cable
is available, temporarily substitute it to
see if the problem goes away.
•
Verify that the processor's power indi-
cator 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 con-
nected. If a spare known-good cable
is available, temporarily substitute it to
see if the problem goes away.
•
If a test setup with a VGA monitor and
keyboard is available, call Northstar
technical support for guidance con-
cerning in-depth troubleshooting of
the system to determine if the prob-
lem is the display or the processor.
•
This may be radar interference; for
additional guidance, see Table 4,
"Troubleshooting the radar interface,"
on page 42.
switch on
position; if
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