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CPU Board I..ED. Error Codes
Center L.E.D. blinks one time
Center L.E.D. blinks two times
Center L.E.D. blinks three times
ROMErrorU6
RAM ErrorU8
CustomChip Failure U9
MAINTENANCE INFORMATION
Regular maintenance is essential to a game's continuing contribution to the operator's earnings.
LUBRICATION
The two main lubrication points of the Ball Shooter Lane Feeder mechanism are the pivots for the
ann. Note that the mechanism of other playfield devices are somewhat similar to the Ball Shooter
Lane Feeder Device; and have the same lubrication requirements as the Ball Shooter Lane Feeder
Device.
A
medium viscosity oil (20Wor
30W)
is satisfactory for these devices.
Because of the functional design (arm-actuated via solenoidplunger operation), the pivot points of
the Left and Right Kickers ("Slingshots") all require lubrication as a regular servicing
procedure.
Lubrication to ensure proper operation also applies to the target blades of the Drop Targets. MBl
Instrument Grease, also known as Drop Target Switch Lubricant, with a Williams' part number of
20-8886, is a recommended lubricant.
SWITCH CONTACTS
For proper game operation, switch contacts should be free of dust, dirt, contamination, and
corrosion. Blade switch contacts are plated to resist corrosion. Cleaning blade switch contacts
requires gentle closing of the contacts on a clean business card or piece of paper, and then pulling
the paper about 2 inches, which should restore the clean contact surface. Adjust the switch contacts
to a 1116-inchgap.
CLEANING
Good g-ameaction and extended playfield life are the result of regular playfield cleaning. During
each collection stop, the playfield glass should be removed and thoroughly cleaned and the
playfield should be wiped off with a clean, lint-free doth. The game balls should be cleaned and
inspected for any chips, nicks, or pits. Replace any damaged balls to prevent playfield damage.
Regular, more extensive, playfield cleaning is recommended. However, avoid excessive use of
water and caustic or abrasive cleaners because they tend to damage the playfield surface.
Playfield wax (or any carnauba based wax), or polish may be used sparingly, to prevent a buildup
on the playfield surface. Do not use cleaners containing petroleum distillates on any playfield
plastics because they may dissolve the plastic material or damage the artwork.
THE MACHINE 145