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MAINTENANCE INFORMATION
LUBRICATION
The two main lubrication points of the Ball Shooter Lane Feeder mechanism are the pivots for the arm.
The mechanism of other playfield devices are somewhat similar and have the same lubrication
requirements. A medium viscosity oil (switch target grease) is satisfactory for these devices.
Because of the functional design (arm-actuated via solenoid plunger 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 Drop Targets.
MBI
Instrument Grease, also known as Drop Target Switch Lubricant, (Bally part number of EI 165), is a
recommended lubricant.
SWITCH CONTACTS
Playfield Switches
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 1/16-inch gap.
Flipper Switches
This game uses the new Fliptronic II Electronic Flipper System.
The end-of-Stroke switches are
NORMALL Y OPEN and should close when the flipper is energized. All end-of-stroke switches and
flipper button cabinet switches are gold flashed computer grade leaf switches.
Only low computer
current is carried through these switches. DO NOT FILE or abrasively clean these switches! DO NO
REPLACE these switches with the old style tungsten high current type switches, as intermittent
operation could occur. Please note that unlike the old style of flipper, an end-of-stroke switch failure will
not harm the flipper. The game will notify the operator of a switch being mis-adjusted in the test report,
but will continue to play. The end-of-stroke switches are a means by which the new electronic flippers
feel and play with all of the subtleties of the old flippers.
CLEANING
Good game action and extended playfield life are the results 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 cloth. 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.
DOCTOR WHO 1-50