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Video Troubleshooting Table, continued
SYMPTOM
Game doesn't appear
No audio
Power-up self-test runs
Blotches of color appear on
screen
White areas in center of
screen appear tinged with
color
Object edges have fringe of
one or more colors
Background of Attract Mode
screens seems out of sync
Words on screen read OK
CAUTION:
WARNING: HANDLE FLUORESCENT TUBE AND CRT WITH CARE.
FRAGILE
fluorescent tube or CRT and it breaks, it will implode! Shattered glass can fly eight feet
or more from the implosion.
CAUSE
Improper
components
Hard drive problems
Picture tube aperture
mask is magnetized
Picture tube purity or
static
convergence
out of alignment
Someone set DIP
switch
for
resolution
ower than VGA
Don't operate the monitor without its Remote Adjustment Board.
7 - 1 1
REQUIRED ACTION
1. Verify that hard disk drive is correct for this
VGM. Label on drive records manufacturer
name, assembly number and program version.
2. Verify that circuit boards are correct for this
VGM.
Label
manufacturer name, assembly number and
hardware version.
3.
. =:I My ,I IUL I I",., II l".,
VGM. VGM set only has one ROM. Label on
ROM records assembly number and software
version.
1. Turn VGM on. lmmediatelv look under hard
drive. Hard Drive Activity LED flashes if drive is
operating property.
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.
Replace
it.
Remove 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.
1.
Turn on VGM.
2. Press and hold TEST MODE to enter Menu
is
System. At Self-Test (Main) Menu, select
Monitor Tests Menu. Run through Crosshatch,
Red, Green and Blue screens to find clearest
display of problem.
3.
Display
screen
static convergence ring magnets on back of
monitor neck. Watch screen in mirror. Adjust
m a g n e t s t o
instructions from monitor manufacturer.
C r o s s h a t c h S c r e e n . T o u c h
adjustments while watching screen in mirror.
1.
VGM onlv outputs VGA video. Press and hold
TEST k&DE to enter Menu System. At Self-Test
(Main) Menu, select DIP Switch Test Menu.
Locate DIP switch bank U17 on the Sound I/O
Board.
3.
Turn on switch 1.
Turn off switch 2.
Reenter Attract Mode and check screens.
on
each
board
with
greatest
problem.
minimize
problem.
If you drop a
records
Follow
U P
1 1
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