Midway Sportstation 39in Deluxe Operation Manual

7-4
VGM Startup Troubleshooting Table, continued
SYMPTOM CAUSE REQUIRED ACTION
Power problem1. Inspect circuit boards under low-light
conditions. LEDs glow if processor circuits
receive voltage. Fan should be turning. These
indications prove presence of DC from power
supply. Still, voltages or signals may not be
normal.
2.  Turn on VGM power. Using 20-volt DC setting
on digital voltmeter, measure DC voltages at
power connector pins.
3.  Using 2-volt AC setting on digital voltmeter,
measure same DC...

7-5
VGM Startup Troubleshooting Table, continued
SYMPTOM CAUSE REQUIRED ACTION
Faulty coin
mechanism1.  Unlock and open coin door. Check each
currency acceptor to assure proper mounting.
Verify that each release latch is closed and
locked. Does mechanism accept and reject
currency correctly? Test mechanism with good
and bad coins.
2.  Inspect to see if external acceptor indicators
(Pricing, Flashing Arrows, etc.) are lit.
3.  Verify that each acceptor operates properly by
placing it in working VGM....

7-6
Audio Troubleshooting Table
SYMPTOM CAUSE REQUIRED ACTION
Improper volume
setting1.  From Main Menu, choose VOLUME LEVEL.
Check that Attract Music is on (enabled). Verify
that all volume levels are set well above zero.
2.  If necessary, change levels to make VGM
audible.•
 No audio
•
  Video is present
•
 VGM (video game machine)
appears to operate normally
Faulty SIO Board1.  From Main Menu, enter Diagnostics Menu.
Select SOUND SUBSYSTEM TEST. Test
checks entire sound system.
2.  Run power-up...

7-7
Joystick Troubleshooting Table
SYMPTOM CAUSE REQUIRED ACTION
Faulty switchEnter game Menu System by pressing and
holding TEST MODE switch inside coin door.
From Diagnostics Menu, choose SWITCH TEST.
Operate joystick in question. Check for proper
readings of up, down, left and right.
Faulty switch wiring1.  Check for wires caught in door hinges, latches or
switch contacts.
2.  Verify that harness connectors are attached and
fully seated.
3.  Assure that joystick switches connector properly
to control...

7-8
Video Troubleshooting Table
SYMPTOM CAUSE REQUIRED ACTION
Power problemVerify connection of AC Power to video
monitor. Inspect CRT neck in dim light.
Glowing filament near CRT base proves that
some monitor circuits receive power. Still,
voltages or signals may not be normal.
Faulty wiring1.  Turn off VGM power. Verify that video signal
and Remote Adjustment Board connectors
seat properly on Video Monitor Board.
2.  Assure that video cables connect to circuit
boards.
3.  Assure that no wires are...

7-9
Typical Cutaway Rear View 

7-10
Video Troubleshooting Table, continued
SYMPTOM CAUSE REQUIRED ACTION
Improper components1.  Verify that hard disk drive is correct for this VGM
(video game machine). Label on drive records
manufacturer name, assembly number and
program version.
2.  Verify that circuit boards are correct for this
VGM. Label on each board records manufacturer
name, assembly number and hardware version.
3.  Verify that ROM instruction set is correct for this
VGM. VGM set only has one ROM. Label on
ROM records assembly...

7-11
Video Troubleshooting Table, continued
SYMPTOM CAUSE REQUIRED ACTION
•
  White areas at screen edges
appear tinged with color
•
  Dots at screen edges appear
oval or cylindricalPicture tube dynamic
convergence is out of
alignmentHave service bureau dynamically reconverge
monitor. This procedure requires removing and
repositioning yoke. Service bureau must follow
instructions from monitor manufacturer.
Faulty wiring1. Check connectors and cables for wiring
continuity. Video cables connect graphics...

7-12
•
 Keystone-shaped pictureShorted turns in yoke1.  Substitute working yoke.
2.  Have service bureau converge monitor.
3. Retest monitor. 

7-13
Software Update Troubleshooting Table
SYMPTOM CAUSE REQUIRED ACTION
You skipped steps or
performed them out
of sequence.Return update components to kit, reinstall
original parts in cabinet, and try process again.•
  Update didn’t work
•
 
After update procedure,
screen reports lower than
latest versionInstallation error may
have damaged
device.1.  Inspect for bent or broken pins.
2.  If you have another kit, try it.
3.  Ask your distributor to check your floppy disk.
Mismatched boot
update version...