Midway Sportstation 25in Conversion Kit Operation Manual

							Troubleshooting          6-7
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 SW ITCH 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 connect properly to
control input wires.
4.  Reconnect loose cables.
5.  Check joystick cable ground connections.
6.  Check that cabinet wiring is correct for this VGM
(video game machine).
7.  Repair faulty wiring.
Faulty mechanical
parts1.  Inspect joystick for: Missing, loose or damaged
parts, torn rubber T-band, etc.
2.  Replace bad parts.
Dirty optosClean dust out of optos with swab and cleaner.
Don’t apply cleaner directly into opto. Never use
solvents!
Faulty joystick fuse1.  Check fuses on I-40 Joystick Interface Board
inside player control panel. Each joystick has its
own fuse.
2.  Replace bad fuses.
Faulty joystick
electronics1.  If joystick fuses are okay, install joystick in
working VGM (video game machine) and retest
it.
2.  If joystick still doesn’t work, replace it.
•  Players complain that
joystick operates erratically
or unreliably
•  Game starts normally
Faulty I-40 Joystick
Interface Board1.  If joystick works in second VGM, I-40 Joystick
Interface Board may be bad.
2.  Replace board and retest joystick.
Joystick Parts 
						

							Troubleshooting          6-8
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 caught on chassis or
mounting brackets.
Improper monitor
adjustments1. Check that BRIGHTNESS (intensity) and
CONTRAST are set above their minimum levels.
2.  If necessary, adjust these settings.
•  Monitor appears non-
functional
•  Audio is present
• VGM (video game machine)
controls operate normally
Faulty monitor
circuitry1.  Examine AC line fuse on Video Monitor Board. If
fuse is faulty, replace it with identical fuse.
2.  If fuse is good: Verify that video monitor
operates correctly by placing it in working VGM.
3.  If monitor is bad: Check monitor power supply.
4.  If power supply is good: Check monitor
horizontal output transistor and related circuitry.
WARNING: HIGH VOLTAGE. 
VGM monitors 
generate and store potentially lethal high
voltages. 
Avoid touching any part of the monitor until power has been off for some time.
A picture tube can maintain a hazardous charge for up to several days. Only qualified
technicians should service monitors. Turn off the power, unplug the VGM and
discharge the CRT before attempting service. Even properly discharged tubes can
revert to a highly charged state, without reapplication of power.
WARNING: 
In normal operation, the monitor doesn’t require isolation from AC line
voltage. During bench servicing, you may need to operate the monitor outside the
cabinet. If you do, isolate the monitor from line voltage with an isolation transformer.
CAUTION: 
Don’t operate the monitor without the Remote Adjustment Board.
Typical Cutaway Rear View 
						

							Troubleshooting          6-9
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 number and software
version.
4.  Replace improper ROMs with correct ones.•  Game screens don’t appear
• No audio
•  Power-up self-test runs
Hard drive problems1.  Turn VGM on. Immediately look under hard
drive. Hard Drive Activity LED flashes if drive is
operating properly.
2.  Allow VGM to load normally. Note and record
any error messages that occur during self-test.
3.  Remove hard drive and install it in working VGM.
If symptom recurs there, hard drive is faulty.
Replace it.
•  Blotches of color appear on
screenPicture tube aperture
mask is magnetizedRemove diskettes from room. Demagnetize
monitor with external degaussing coil. Take care
not to magnetize neighboring VGMs. Monitor
may be on or off for this procedure.
•  W hite areas in center of
screen appear tinged with
color
•  Object edges have fringe of
one or more colorsPicture tube purity or
static convergence is
out of alignment1.  Turn on VGM (video game machine).
2.  Press and hold TEST MODE to enter Menu
System. At Main Menu, select Monitor Tests
Menu. Run through Crosshatch, Red, Green and
Blue screens to find clearest display of problem.
3.  Display screen with greatest problem.
4.  Display Crosshatch Screen. Locate purity and
static convergence ring magnets on back of
monitor neck. W atch screen in mirror. Adjust
magnets to minimize problem. Follow
instructions from monitor manufacturer.
5. Display Crosshatch Screen. Touch up
adjustments while watching screen in mirror.
•  Background of Attract Mode
screens seems out of sync
•  W ords on screen read OKMedium resolution
monitor, and DIP
switch set for low
resolution1.  Press and hold TEST MODE to enter Menu
System. At Main Menu, select Diagnostics. Then
select DIP Switch Tests Menu.
2.  Locate DIP switch bank U12 on the Sound I/O
Board.
3.  Turn off switch 2.
4.  Reenter Attract Mode and check screens.
CAUTION: 
Don’t operate the monitor without its Remote Adjustment Board.
WARNING: HANDLE FLUORESCENT TUBE AND CRT WITH CARE. 
If you drop a
fluorescent tube or CRT and it breaks, it will implode! Shattered glass can fly eight feet
or more from the implosion. 
						

							Troubleshooting          6-10
Video Troubleshooting Table, continued
SYMPTOM CAUSE REQUIRED ACTION
•  W hite 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.
Improper sync signals1.  Check to see if Video Board puts out type of
sync that your monitor requires.
2.  Adjust sync for monitor you’re using: On SIO
Board, set DIP switch bank U12, switch 2. Off =
medium resolution (default); on = low resolution.
3.  Verify that jumpers are set correctly for monitor.
4.  If necessary, add or remove video sync jumper
at Sound I/O Board jumper block J2. W ith no
pins connected (or pins 2 and 3 connected),
board outputs positive sync. W ith pins 1 and 2
connected, board outputs negative sync.
Faulty wiring1. Check connectors and cables for wiring
continuity. Video cables connect graphics card
to circuit boards, and then to video monitor.
2.  Assure connection of all cabinet ground wires,
especially at video monitor chassis.
3.  If you find faulty wiring, repair it.
Faulty monitor
circuitry1.  Check video monitor operation by connecting it
to working VGM (video game machine).
2.  Assure that monitor is correct type for this VGM.
Monitors with wrong resolution can’t lock sync.
3.  If you have wrong type monitor, replace it.
•  Video tears or rolls, or has
black bar down middle of
screen
•  Video may appear as
colored bars of dashed lines
Electromagnetic
fieldsMove cabinet far away from machines,
appliances, or competitors’ VGMs.
Faulty wiring1. Check connectors and cables for wiring
continuity from circuit boards to video monitor.
2.  Repair faulty wiring.• Missing colors
Faulty monitor color
drive circuitryVerify that video monitor operates correctly by
connecting it to working VGM.
•  One color is dimmer or
brighter than others
•  W hites appear tinted
everywhere on screenMaladjusted color
bias pots1.  Turn on VGM (video game machine).
2.  Enter Monitor Tests Menu.
3.  W atch Color Bars screen in mirror.
4.  Adjust three bias pots for best colors. (Most
monitor neck boards include these pots.)
5.  Also check W hite Screen. Touch up controls.
6.  If whites still seem tinted, have service bureau
rejuvenate picture tube.
•  Picture is dim or fadedMaladjusted
BRIGHTNESS pot or
subnormal picture
tube emission1.  W atch Color Bars screen. Adjust BRIGHTNESS
and CONTRAST pots for greatest number of
grays. You’ll find these pots on Monitor Remote
Control Board, behind coin door.
2.  If pots have no effect, have service bureau
rejuvenate picture tube. 
						

							Troubleshooting          6-11
Video Troubleshooting Table, continued
•  Picture is too narrowMaladjusted W IDTH
potEnter Monitor Tests Menu. W atch Crosshatch
Screen while adjusting W IDTH pot for best
picture. You’ll find this pot on Monitor Remote
Control Board, behind coin door.
•  Picture is too shortMaladjusted HEIGHT
pot or damaged
vertical circuit1.  Enter Monitor Tests Menu. W atch Crosshatch
Screen while adjusting HEIGHT pot for best
picture. You’ll find this pot on Monitor Remote
Control Board, behind coin door.
2.  If pot has no effect, service vertical output circuit.
•  Picture seems shifted to one
sideMaladjusted
HORIZONTAL
POSITION potEnter Monitor Tests Menu. W atch Crosshatch
Screen while adjusting HORIZONTAL POSITION
pot for best picture. You’ll find this pot on Monitor
Remote Control Board, behind coin door.
• Keystone-shaped pictureShorted turns in yoke1.  Substitute working yoke.
2.  Have service bureau converge monitor.
3. Retest monitor.
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 and
hard drive.1. Once  you’ve updated disk drive, CPU
instructions must be at correct version to make
use of new data stored on disk. Be certain that
boot ROM device resides in proper socket.•  No Attract Mode screens
•  Board indicators illuminate,
but screen is completely
blank
You may have
installed devices in
wrong sockets.1.  Install disk ROM. Only use upgrade socket for
hard disk drive updates. During game play,
upgrade socket must be empty.
2.  Load ROM contents onto drive.
3.  Remove ROM from game.
NOTICE: 
Someday, software updates for your VGM (video game machine) might
become available. These upgrades may improve your VGM’s performance or add new
VGM features. Such upgrades tend to appear sometime after factory first releases
VGM. Contact your distributor for information about updates. 
						

							Troubleshooting          6-12
Miscellaneous Problem Troubleshooting Table
SYMPTOM CAUSE REQUIRED ACTION
Faulty fluorescent
tube1.  Remove fluorescent tube from its sockets. If you
find cracks or darkened ends, install new lamp.
Clean tube.
2.  Check continuity of both fluorescent tube
filaments.
3.  Verify that fluorescent tube operates by placing it
in working VGM.
Faulty lamp fixture 1.  Verify that lamp pins make good connection with
socket contacts.
2.  Check ballast for continuity.
•  Marquee lamp is intermittent
or non-functional
• VGM (video game machine)
starts and plays normally
Faulty wiring 1.  Measure fluorescent lamp AC voltages. Check
wiring and connector continuity from AC power
chassis to lamp assembly.
2.  If you find faulty wiring, repair or replace it.
Obstructed fan1.  Check bottom and rear of cabinet for blocked
airflow.
2.  Move VGM away from sources of heat.
3.  Turn off VGM power. Remove dust from vent
holes with high-power vacuum cleaner.
Faulty wiring 1.  Check fan wiring and connectors.
2.  If you find faulty wiring, repair or replace it.
•  VGM operates normally
•  Cabinet becomes warm after
several hours of use
Faulty fan 1.  Check operation of all fans, including power
supply fan.
2.  If fan is faulty, replace it.
•  Error messages appear on
screenFaulty hardware1.  Check any assembly (RAM, ROM, Battery, etc.)
identified in error messages.
2.  Replace faulty parts.
3.  Call your authorized distributor for help with
unresolved screen messages.
Fan Location and Mounting 
						

							WARNINGS & NOTICES
WARNING
•  Use of non-Midway parts or circuit modifications may cause serious injury or equipment damage!
•  Use only Midway authorized components and parts. Failure to do so will void your warranty and may result in
incorrect or unsafe operation. Substitute parts or modifications may void the EMC directive or FCC type
acceptance.
•  Federal copyright, trademark and patent laws protect this game. Unauthorized modifications may be illegal
under Federal law. The modification ban also applies to Midway game logos, designs, publications and
assemblies. Moreover, facsimiles of Midway equipment (or any feature thereof) may be illegal under federal law,
regardless of whether or not such facsimiles are manufactured with Midway components.
WARNING
Prevent shock hazard and assure proper game operation. Plug this game into a properly grounded outlet. Do not
use a cheater plug to defeat the power cords grounding pin. Do not cut off the ground pin.
WARNING:
A small portion of the population has an epileptic condition that may cause seizures. Affected persons experience
seizures while watching some television pictures or playing certain video games. People who have not had seizures
may still have an undetected epileptic condition.
If anyone in your family has experienced epilepsy symptoms (e.g., seizures or loss of awareness), consult your
physician before using video games.
W hile children play video games, a parent should observe. Be alert to the following symptoms: Dizziness, altered
vision, eye or muscle twitching, involuntary movements, loss of awareness, disorientation, or convulsions. If you or
your child experience these symptoms, discontinue use immediately and consult your physician.
NOTICE
This kit has been tested. It complies with limits for a Class A digital device, under FCC Rules, Part 15. These limits
provide reasonable protection against harmful interference when the equipment operates in a commercial
environment. This equipment generates, uses and can radiate radio frequency energy. If not installed and used
according to the instruction manual, this equipment may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference. If interference occurs, the
user must correct it at his own expense.
CAUTION
Installation of this kit does not guarantee compliance with FCC requirements. You are solely responsible, and
Midway has no responsibility for FCC compliance of installed kits. Don’t install an FCC compliance label on the
product until the FCC acknowledges compliance.
NOTICE
You may not reproduce any part of this publication by mechanical, photographic, or electronic means. You may not
prepare phonograph recordings of this document. You may not transmit this publication or otherwise copy it for
public or private use, without permission from the publisher.
COPYRIGHT & TRADEMARK NOTICE
Entire contents of this manual copyright © 2000 Midway Amusement Games, LLC. All rights reserved. The following are
trademarks of Midway Amusement Games, LLC: Midway®, SportStation™, NBA Showtime
™, NFL Blitz 2000 Gold Edition™.
©2000 NBA. © 2000 NFLP. Team names and logos are trademarks of indicated teams. The NBA logo is a trademark of the
National Basketball Association. Officially Licensed Product of the National Basketball Association. The NFL shield, Super Bowl
and Pro Bowl are trademarks of the National Football League Players. The Players Inc.
 logo is a registered trademark of the NFL
Players. The NBC logo is a registered trademark of the National Broadcasting Company.
FOR SERVICE
Call your Authorized Midway Distributor.
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