VIII. ROUTINE MAINTENANCE
ON
LOCATION:
Self- Test routines are
written into the game design. They are particularly useful
for routine
maintenance.
The tests are described below. The first test is automatic and occurs
on
power-up.
This test
causes
the MPU module
A4 to
examine itself for failures. Seven flashes
of
an
LED indicates proper operation. The second
series of
self-diagnostic tests
causes
the MPU
to 'exercise' each of the other modules in
such a way as to
make their faults, if any,
obvious.
See
Figure
III and Page ii.
It is recommended
that these tests be used several times a
week
to
check out the games
before play. If faults
are discovered, they may
be
corrected on location if the
operator has
a
stock of
replacement modules.
See
"Trouble Shooting on Location."
MPU
Module Self-Test:
At power on, the LED on the MPU module flashes once. (Flicker-Flash). After
a
pause, it
flashes
six more times and
goes
out. A power-up tune is played to announce game readiness.
This
indicates proper MPU operating
condition and successful completion
of
the
power-up
test.
Game Self-Diagnostic
Tests:
1. Pressing
the Self-Test button inside the door initiates the Self-Test routine. See Figures III
and IV
All switched lamps flash off and on continuously.
2. Pressing the Self-Test
button again causes each digit on each display to
cycle from thru
9,
and repeat continuously.
3. Pressing
the Self-Test button again
causes
each solenoid to
be
energized, one at a time,
in
a continuous sequence. Hold both flipper
buttons
'in'
during
this test. The number
appearing on the Player
Score displays is the same as the number assigned to the
solenoid,
The
sound of
a
solenoid
pulling-in as a number appears indicates proper
operation. The
absence of
sound
is
improper. If sound is absent, see Page 17 for help in Solenoid
identification.
4.
Pressing Self-Test button again
causes the
sound module
to play the
"Game Over" tune
repeatedly.
5. Pressing the
Self-Test button again
causes
the MPU to search each switch assembly for
stuck
contacts. If any are found, the number of the
first set
encountered is flashed on the
Player
Score displays. The number remains until the fault is cleared.
See
Page 1
7
for help in
Stuck
Switch identification.
Other
numbers
may follow if more stuck contacts are
present. If
there
are
no stuck switches, the Match/Ball
in Play display flashes
'0'.
6.
Pressing the Self-Test button 20 more times causes the MPU to step thru the threshold
and
bookkeeping functions described previously and finally to repeat the power-up test.
For
more rapid exit to power-up, turn the game off, then on. The game is now ready to play.
After
successful completion of the Self Diagnostic Test procedure, set the
game
up
for play.
Exercise each rollover, thumper-bumper, slingshot, etc.,
by
hand until each switch
assembly
on
the playfield has been checked for
proper
operation. If actuating
a
switch
assembly
results in intermittent
or no response, clean contacts by gently closing
them on
a
clean
business card
or piece of paper and wiping until they wipe clean. Regap,
if necessary, to
1/16".
Do not burnish or file Gold Plated Switch Contacts.
IX. TROUBLESHOOTING ON LOCATION
The
game
is
designed to make troubleshooting
easy. Several simple procedures are
given
herein that cover the
greatest percentage of game failures. They are written for an
operator on
location
and require module replacement.
(See
Figure III) Symptoms and the action to be
taken
are given for each
type
of
problem.
If the problem
is more complicated and is not solved
by
following this procedure,
more detailed
procedures are available
from Bally.
See
the Parts List for ordering information.
13
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