Atari Breakout - Maintenance and Adjustments; Routine Maintenance; Adjustments on TV Monitor; Adjustment of Speaker Volume

V. MAINTENANCE AND ADJUSTMENTS
5.1 ROUTINE MAINTENANCE
Due to its solid-state electronic circuitry, this
Atari game should require very little maintenance
and only occasional adjustment.
5.1.1 CLEANING: Game cabinets and glass may be
cleaned with any non-abrasive household cleaner. If
desired, special coin machine cleaners which leave
no residue can be obtained from distributors.
5.1.2 LUBRICATION: About once every three
months lightly spray the rejector linkage portion of
the coin acceptor inside each coin mechanism. Use
WD-40®
or similar lubricant, and avoid spraying the
entire coin acceptor. Potentiometer shafts must
never be lubricated in any way.
5.2 ADJUSTMENTS ON TV MONITOR
The TV monitor need be adjusted only when the
picture is distorted, or if the contrast or brightness
seem out of adjustment.
NOTE: The TV monitor is accessible only
from inside the game cabinet and these
adjustments have to be done while the
game is energized. Therefore only per-
sons familiar with safety measures and re-
pair procedures on electrical equipment
should perform them.
The monitor's adjustments function like those
of a conventional commercial television set, except
that the volume adjustment has no effect. Instead
the game produces its sound in a speaker separate
from the TV monitor. Figure 5-1 shows the location
of the adjustments on the rear of the chassis. When
making the adjustments follow these general
guidelines:
BRITE (Brightness)-Perform this adjustment before
the contrast. Adjust so that the white lines
covering the screen just barely disappear,
when the brightness is turned up.
CONT (Contrast)-Adjust so that the images are as
bright as possible against the dark
background without being blurred.
HORIZ HOLD (Horizontal Hold)-Adjust if the pic-
ture is slightly off-center horizontally, if the
images appear warped, or if the picture is
broken up into a series of diagonal lines. Ad-
just for a stable, centered picture.
VERT HOLD (Vertical Hold)- This needs adjustment
only if the picture appears to be rolling up or
down the screen. Adjust for a stable, cen-
tered picture.
5.3 ADJUSTMENT OF SPEAKER VOLUME
The speaker electronic drive circuit is provided
with a potentiometer that controls the volume of
sounds produced during play. This potentiometer is
mounted on a printed circuit board inside the game
cabinet and it can be manually adjusted to give the
volume level desired. The following procedure tells
how to make this adjustment.
For a game in the upright cabinet unlock and
remove the access panel at - ttie rear of the cabinet.
On the cocktail table cabinet the access panel is on
the side of the table base opposite from the coin
mechanisms. Removing the access panel should
cause the interlock switch to de-energize the game,
as described in subparagraph 4.2.2. If the switch fails
to de-energize the game, immediatlely replace and
lock the panel, unplug the power cord, and refer to
Section VI of this manual to adjust and / or replace
the switch.
While being careful to avoid touching any parts
of the body against the TV chassis components or
other wiring connections inside the cabinet, find the
metal enclosure that houses the game PCB . Unplug
the edge connector that connects the wire harness
to the RF board mounted on the front of the metal
enclosure . Note how this connector plugs in; it
must be reconnected in exactly the same way after
the volume adjustment has been made. Next re-
move the screws that hold the RF board onto the
front of the metal enclosure, and then unplug the RF
board from the game PCB. The game PCB is now
-free to move out of the enclosure.
Slide the PCB on its guides until it is partway out
and the volume adjustment potentiometer is ac-
cessible. Figure 4-1 shows its approximate location.
(Its exact location is shown as RSO on drawing
· number A004533 in Section VII of this manual.) To
increase speaker volume, move the stud on top of
the potentiometer body in the direction shown by
the arrow in Figure 4-1 . To decrease speaker vol-
ume, move the stud in the opposite direction.
After making the adjustment, push the game
PCB all the way back into the enclosure, replug the
RF board onto the game PCB, and then secure it in
place on the front of the enclosure. Next replug the
wire harness edge connector back onto the RF
board, making sure that it is reconnected in the way
originally found. Then replace the cabinet panel and
energize the game.
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