Midway Nba Showtime Gold Edition Nba On Nbc Operation Manual

							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 upgrade ROM.
Mismatched boot
ROM update version
and hard drive.Boot ROM and disk version numbers must
match. If necessary, replace boot ROM or disk.
You installed boot
ROM in wrong
socket.1.  Be certain that boot ROM device resides in
proper socket.
2.  If necessary, move boot ROM to proper location.
You installed upgrade
ROM in wrong
socket.1.  Install disk ROM. Only use upgrade socket for
hard disk drive updates.
2.  Load ROM contents onto drive.
3.  Remove ROM from game.
•  No Attract Mode screens
•  Board indicators illuminate,
but screen is completely
blank
Upgrade ROM
remains in VGM
(video game
machine) during
game play.1.  During game play, upgrade ROM must be
empty. Switch off VGM.
2.  Remove upgrade ROM.
3.  Switch on VGM.
4.  Retest Game Mode.
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 
						

							Parts          7-1

	


	





	

	


C H A P T E R
SEVEN
PARTS
WARNING: 
Use of non-Midway parts or circuit modifications may cause serious injury or
equipment damage! Use only Midway authorized parts.
For safety and reliability, don’t substitute parts or modify Midway products. Substitute parts or
modifications may void the game’s EMC directive or FCC type acceptance. 
						

							Parts          7-2
CABINET FRONT VIEW
09-96020
4308-01123-20B 4108-01193-10B 01-11262 4506-01106-24B4406-01128-00 5555-15098-00 03-9373-108-7456-403-9373-103-8252-2
31-3586
5642-14632-00
4408-01128-00 4108-01193-10B 
						

							Parts          7-3
MONITOR AND LAMP FIXTURE MOUNTING
4008-01113-06
01-10819
4420-01141-00
5675-15639-03 24-8809
08-7456-10
4420-01141-0003-8497 A-22506 
						

							Parts          7-4
CABINET REAR VIEW
4008-01003-16
01-10714A-20281
4108-01219-11 03-8326 
						

							Parts          7-5
REAR DOOR ASSEMBLY A-20281
01-7264
20-10350 4420-01141-00
01-11291
03-7602
4108-01219-11
01-8989
4320-01123-20B4320-01123-20B 4420-01141-00
01-11285
04-10149.1
REAR DOOR LOCK DETAIL
4320-01123-20B01-11285 4420-01141-00
01-11286
01-11287 
						

							Parts          7-6
CASTERS
01-9359
02-4404
20-9627 20-8712-37 4108-01219-11
LEG LEVELERS