Atari Breakout - TV Monitor; Antenna Static Modification

returned.
Coins
having
little
or
no
magnetic
proper-
ties,
such
as
brass
or
zinc
coins,
will
pass
through
the
magnetic
field
so fast
that
they
will
overshoot
the
"accept"
entrance
and be
returned.
A
magnetic
gate
adjusted
with
too
large
a
gap
may pass
both
genuine
and
counterfeit
coins.
An
ad-
justment
with
too
small
a gap can
lead
to
rejection
of
some
or
even
all
coins.
Over
a
period
of
time,
the
screw
that
adjusts
the
magnet
gate has a
tendency
to
work
loose,
resulting
in
a
gradual
narrowing
of
the
gate.
At
first,
only
the
thickest
(i.e.,
newest)
coins
are
rejected.
As
time
passes,
more
and
more
coins
are
rejected
until
finally
player
complaints
lead
to
the
calling
of
the
game
repairman.
If
pressing
the
coin
rejector
button
does
not
cause
the
coin
to
be
returned,
and
if
the
game
still
does
not
respond,
then
check
the
coin
mechanism
to
see
if
the
coin
is
jammed
inside.
If
you
are
certain
that
the
coin
is
genuine,
and
that
the
coin
passes
through
the
coin
mechanism
and
into
the
cash
box,
then
the
lack
of
game
re-
sponse
is
probably
due
to
some
kind
of
electrical
trouble.
Check
for
signals at
the
electrical
contacts
of
the
coin
mechanism
before
moving
on
to
the
har:-
ness and
other
parts
of
the
circuitry.
6.3.2
TV
MONITOR:
The
TV
monitor
is a
self-
contained
unit
housed
in
its
own
chassis. A
trouble's
cause
may
be
narrowed
down
to
the
monitor-
either
by
the
substitution
method
using
a
known-
to-be-good
monitor,
or
by
verifying
presence
of
AC
power
to
the
monitor
power
supply
and presence
of
the
correct
composite
video
signal.
The
entire
monitor
can
then
be
removed
from
the
game
cabinet.
Doing
this
facilitates
troubleshooting
steps,
because
all
monitor
components
will
then
be
ac-
cessible.
A
schematic
diagram
of
the
monitor
circuitry
is
included
in Section
VII
of
this
manual.
After
discon-
necting
and
removing
the
monitor
from
the
game,
standard
TV
troubleshooting
techniques
are
adequate
for
locating
causes
of
trouble.
Additional
servicing
information
is available
from
the
monitor
manufacturer
(Motorola).
6.3.3
ANTENNA
STATIC
MODIFICATION:
This
subparagraph
gives a
procedure
for
modifying
the
antenna
wire
connected
to
pin
17
of
the
printed
cir-
cuit
board's
edge
connector.
The
antenna
is
part
of
the
credit
portion
of
the
game
circuitry.
This
static
modification
feature
is
included
so
that
it
will
not
be
possible
for
a
player
to
obtain
bonus
games (that is,
game
plays
without
having
deposited
money
into
the
game)
by
inducing
a static charge in
the
coin
en-
trance
plate
or
any
other
metal
part
of
the
game-
provided
that
the
antenna
has
been
cut
to
optimum
length.
The
antenna
is a
wire
approximately
one
foot
long,
with
one
end
.
intentionally
left
not
connected.
When
a static discharge
occurs,
an
electric
currerit
is
induced
in
this
wire
and
an
impulse
is
transmitted
to
the
credit
latch
circuit.
This
impulse
resets
the
latch,
turning
off
game
credit
and
changing
the
game
over
to
the
attract
mode.
To
test
the
static
modification
feature,
touch
the
end
of
the
antenna
wire
with
your
finger;
the
body
usually
has
enough
capacitance
to
trigger
the
circuitry.
Sensitivity
of
the
static
modifi-
cation
feature
can
be
adjusted
by
changing
the
length
of
the
antenna
wire.
Lengthening
the
wire
in-
creases
sensitivity,
so
that
a
lesser
charge
will
turn
off
game
credit.
Cutting
the
wire
shorter
decreases
sensitivity,
so
that
a
larger
charge
is
required
for
triggering
the
circuit..
If
there
are
problems
with
static
charges
acci-
dentally
shutting
off
the
game
credit,
try
cutting
the
wire
shorter,
in
increments
of
Yi
inch
at a
time.
Be
aware,
however,
that
if
the
antenna
wire
is
cut
too
short,
players may
be
able
to
obtain
free game
credit
(bonus
games)
by
inducing
a
static
charge
in
the
game.