Specifications
Symptom
l Sloppy, unpredictable
or ineffective steering
l Video
IS
present
l Video Game Machine
(VGM) operates nor-
mally
Cause
Blocked or faulty
fan
--
Faulty mechani-
cal parts
-~
Faulty Wheel
Driver Board
-0ose or worn
irive
be/t
Required Action
__.~
1.
Fan located on power supply acts as an exhaust
fan; with power switched on, check fan airflow to
assure that nothing blocks airflow.
1,
Inspect motor for faulty or worn belts, bearings,
couplings, gears, etc. Refer to the Steering
Assembly Service instructions in Chapter 3 for
complete details.
Inspect Wheel Driver Board under low-light condi-
tions. To indicate presence of AC from the trans-
former the LED’s glow when voltage is recerved.
However, voltages or signals may not be normal.
Examtne fuses and cables on Wheel Driver Board.
Replace bad fuses.
Use drgital voltmeter to verify AC voltage between
each fuse holder and ground. Measure approxr-
mately 25V. See Wiring Diagram.
Use the 20-VAC setting on digital voltmeter to
measure DC voltage at motor. Do not move steer-
ing wheel, drive belt, or motor while making this
measurement. Any reading indicates unstable
supply that may contain ripple or noise.
Select CONTROLLER TEST from the Diagnostic
Menu. Follow on-screen instructions to verify
operation of the wheel motor and steering position
sensor.
1
5.
6.
Verify proper operatron of Wheel Driver Board by
placing it in working VGM.
1.
Inspect motor for faulty or worn belts, bearings,
couplings, gears, etc. Refer to the Steering
Assembly Service instructions in Chapter 3 for
complete details.
2.
If drive belt isn’t worn or damaged, check its tight-
ness.
I
WARNING
/
The Wheel Driver Board heatsink, power resistors, and other components may be very hot.
~
The DC Motor in the steering wheel may also be hot.
TROUBLESHOOTING
-
8
MIDWAY AMUSEMENT GAMES, LLC