NorthStar Navigation 961XD installation manual Display

SECTION TWO - Installation

Table 2: Troubleshooting the installation (continued)

Problem Area	Symptom	Possible Solutions/Reasons
POWER (cont’d)	The control head powers-up, but not the	• Check the fuse and the power to the
	processor (the processor’s power indicator	processor.
	at the back of the unit is not lit).	• Check the coax cable between the
		head and the processor.
		• Set the TEST-POWERswitch on
		the processor to the TEST position; if
		the processor doesn’t power-up, then
		power to the processor is faulty, or the
		entire unit may be defective.
POWER (cont’d)	The control head powers up, beeps, and the	• Verify that the processor’s power indi-
	backlight can be operated up and down, but	cator at the back of the unit is lit.
	there isn’t any video.	• 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.
DISPLAY	There is continuous or intermittent system	• Verify that the processor’s power indi-
	failure as evidenced by the display screen	cator at the back of the unit is lit.
	flashing a "plaid" or multi-colored "waffle	• Check the fuse and the power to the
	weave" pattern.	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.
	There is continuous or intermittent system	• This may be radar interference; for
	failure as evidenced by the display screen	additional guidance, see Table 4,
	flashing a pulsing white flash in a continu-	“Troubleshooting the radar interface,”
	ous repeating pattern.	on page 42.

961 INSTALLATION MANUAL Revision A Page 33