Nighthawk SILVER STRIKE BOWLING operation manual Sound Problems

Sound Problems

Symptom	Probable Cause	Solution
No Sound	Audio Cable between the I/O board	Verify audio cables are connected.
	and the Nighthawk Chassis are not	See diagram on page 45.
	connected.
	Speakers are not connected	Verify continuity from the I/O board
	properly.	speaker output pins to the speakers.
		Refer to pin out diagram - page 43.
	Volume is set to the lowest level.	Adjust the volume to an audible
		level.
	Attract mode sounds may be set to	Choose one of the 5 Attract Mode
	all off. You will have sounds when	sound options in Sound
	playing the game.	Adjustments.
	Defective Nighthawk Chassis.	Be certain all other possibilities are
		explored before replacing the
		Nighthawk Chassis.
Distorted or scratchy game sounds	Bad speaker.	Replace blown speaker.
	Loose speaker or grill cover is	Verify all components are installed
	causing vibration.	properly and securely.
	Loose/defective audio cables from	Check the audio cable connections.
	the Nighthawk Chassis to the I/O	Replace cable.
	board.
	Defective I/O board.	Verify on a known working system.
		Replace if necessary.

Control Problems

Symptom	Probable Cause	Solution
Button does not work.	Switches Common post is not	Verify continuity to digital/power
	connected to digital ground.	supply ground.
	Signal wire is not connected to the	Verify continuity from the I/O board
	Normally Open post of the switch.	to the Normally Open post of the
		switch.
	Switch is defective.	Replace defective switch.
Button always indicates closed in	Signal wire is connected to the	Connect signal wire to the Normally
the player control test. Pressing it	Normally Closed post of the switch.	Open post of the switch.
will show it is not depressed.
Button always indicates closed in	Defective I/O board.	Test on a known good system.
player control test even with the		Replace if necessary.
switch disconnected entirely.
Trackball is not functioning in any	Trackball is not connected to the	Verify the trackball is connected to
direction.	I/O board properly.	J208 labeled trackball on the I/O
		board.
	Defective trackball Interconnect	Verify continuity on the trackball
	cable.	Interconnect cable.
	Trackball is defective.	Replace trackball.
	I/O board is defective	Replace I/O board. Try it on a
		known good system.
Trackball does not work in a	Trackball cable is defective.	Verify continuity on the trackball
certain direction.		cable. Repair or replace if needed.
	Trackball is defective.	Repair or replace the trackball. Try it
		on a known working system.
	I/O board is defective.	Repair or replace the I/O board. Try
		it on a known working system.
Trackball works intermittently.	Inside of the trackball is dirty.	Clean the inside of the trackball.
	Rollers are worn.	Replace the rollers and bearings.
	Trackball is over-tightened.	Do not over-tighten the trackball.
		Tighten just enough to flatten the
		lock washers.
Silver Strike Bowling™	Version 08/04	Page 41

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