Nighthawk SILVER STRIKE BOWLING - Manual (Page 43)

Silver Strike Bowling™ Version 08/04 Page 41
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Sound Problems
Symptom Probable Cause Solution
Audio Cable between the I/O board
and the Nighthawk Chassis are not
connected. Verify audio cables are connected.
See diagram on page 45.
Speakers are not connected
properly. Verify continuity from the I/O board
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
all off. You will have sounds when
playing the game. Choose one of the 5 Attract Mode
sound options in Sound
Adjustments.
No Sound
Defective Nighthawk Chassis. Be certain all other possibilities are
explored before replacing the
Nighthawk Chassis.
Bad speaker. Replace blown speaker.
Loose speaker or grill cover is
causing vibration. Verify all components are installed
properly and securely.
Loose/defective audio cables from
the Nighthawk Chassis to the I/O
board. Check the audio cable connections.
Replace cable.
Distorted or scratchy game sounds
Defective I/O board. Verify on a known working system.
Replace if necessary.
Control Problems
Symptom Probable Cause Solution
Switches Common post is not
connected to digital ground. Verify continuity to digital/power
supply ground.
Signal wire is not connected to the
Normally Open post of the switch. Verify continuity from the I/O board
to the Normally Open post of the
switch.
Button does not work.
Switch is defective. Replace defective switch.
Button always indicates closed in
the player control test. Pressing it
will show it is not depressed. Signal wire is connected to the
Normally Closed post of the switch. Connect signal wire to the Normally
Open post of the switch.
Button always indicates closed in
player control test even with the
switch disconnected entirely. Defective I/O board. Test on a known good system.
Replace if necessary.
Trackball is not connected to the
I/O board properly. Verify the trackball is connected to
J208 labeled trackball on the I/O
board.
Defective trackball Interconnect
cable. Verify continuity on the trackball
Interconnect cable.
Trackball is defective. Replace trackball.
Trackball is not functioning in any
direction.
I/O board is defective Replace I/O board. Try it on a
known good system.
Trackball cable is defective. Verify continuity on the trackball
cable. Repair or replace if needed.
Trackball is defective. Repair or replace the trackball. Try it
on a known working system.
Trackball does not work in a
certain direction.
I/O board is defective. Repair or replace the I/O board. Try
it on a known working system.
Inside of the trackball is dirty. Clean the inside of the trackball.
Rollers are worn. Replace the rollers and bearings.
Trackball works intermittently.
Trackball is over-tightened. Do not over-tighten the trackball.
Tighten just enough to flatten the
lock washers.