NorthStar Navigation 978/897-6600, 800/628-4487 installation manual Video Setup screen

SECTION SEVEN: Troubleshooting and servicing the 958 system

TABLE 11: Troubleshooting the 958 installation (cont.)

Problem Area	Symptom		Possible Solutions/Reasons
DISPLAY (cont.)	• The display screen dims, either slightly		• The 958 may be going into auto-dim-
		or more, after the 958 has been on for a	ming mode. Auto-dimming helps
		certain time.	maintain the integrity of the display
			and reduce power consumption when
			the 958 is on and running too hot for
			its current environment. In this case,
			the display screen may automatically
			dim.
	•	The message 8117 FAILURE appears	• The internal 8117 video chip has
		where the video input image should be.	failed; contact the Northstar Service
			Department. (This failure affects only
			the video image, nothing else.)
	•	Color bars appear where the video	• Check that the video image is turned
		overlay image should be.
			on (press STAR to display the
			VIDEO SETUP screen).
			• Check the cables and the connectors.
			• Check that the video equipment is
			working properly.
SYSTEM	Hardware-related:
System lock-ups			• Possible internal failure; call your
	• The system locks up on a random basis
			Northstar dealer or the Northstar Ser-
		with no apparent pattern.
			vice Department.
	• The system locks up when using a chart		• Possible bad chart card. Remove the
		card.	card, and inspect the pin area of the
			card and the 958 for damage. If the
			pins in the 958 are bent or damaged,
			to prevent further damage, don’t
			insert another card. If you’re sure the
			card pins aren’t bent, try inserting a
			new card (turn power off before
			inserting).
	• System fails any initial self-tests.		• Possible internal failure; call your
			Northstar dealer or the Northstar Ser-
			vice Department.

Page 36 958 Installation Manual, Rev. A1