ROUTINE MAINTENANCE
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D. SERVICE HINTS
1. ELECTRON IC
Bally recommends checking out electronic games weekly by performing the diagnostic tests
described in Section V I. A complete set of schematic diagrams is provided in Section VII I to use in
conjunction with the tests and help locate faulty components.
2. MECHANICAL SWITCHES
a. Tilt Switches
Front door and cabinet tilt switches should be adjusted to have about a 1/16" gap between
contacts. The
weighted
blade should be positioned to achieve this gap. A larger gap is less sensitive
to tripping and a smaller gap increases sensitivity.
b. Other Switch Assemblies
Tighten assembl; mounting screws (closest to contact end first) before adjusting to prevent
le?ves from fc>nning out. Leaf springs should be adjusted for a 1/16" gap between contacts in the
L
'en position and .010 additional travel upon closing. All contacts are gold plated and must not
be
filed. Cle;--n by closing on a clean business card and pulling it back and forth three times.
CAUTION: Damage to contacts may occur if abrasive tools are used. Pitted or damaged contacts
must be replaced as an assembly. Lubrication should not be used.
3. General
Periodic cleaning of the playfield will extend the life and maintain the appearance of
its
finish. An excellent cleaner to use is Wildcat #125- compound. If not available locally, ask
your
distributor to order it from the Wildcat Chemical Company, 1333 Seminary Drive,
Ft.
Worth,
Texas, 76115. Avoid waxing or polishing with products that accumulate residue and yellow
with
age.
CAUTION: Do not use large amounts of water, caustic or abrasive cleaners.
Inspect each ball every month and polish with a clean cloth. Replace any chipped balls
promptly - a chipped ball can damage the playfield
in
a
short time.
Use the printed circuit board removal tool (M-165 1 -96) when replacing or working
on
modules. Always disconnect game from main power source
first
and touch the ground braid.
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