Basic HTML Version
A) Schematics
The schematic as
drawn
shows
the
power-on
and
game illumination
only condition.
The lock relay ;s de-energized.
(See
Figure
II-I).
Figure
111-1
shows
the
location of specific game functions
on the
schematic.
This figure can
be
used
to
localize
the
area
of
interest on the schematic for a given type of game fault. For
example, if the game were coined and the credit button pressed,
Figure
11-3
shows that the lock relay should be energized.
The schematic shows it should be self-holding in the energized
position.
If 'game over' is lit on the insert, the fault must
either be in the lock relay self-holding or
in. the coin
relay
contact. Visual inspection will usually revea1 the source of
the trouble.
A volt-ohmmeter will always locate the trouble.
The schematic, therefore, allows us to trace each circuit
through the game to the power source (the transformer secondary).
A
color code is given for each lead to facilitate this tracing
in the game.
The numbers on the bottom of the schematic and the letters on
the left hand margin of the schematic can be used with the coil
location chart at the right hand side to locate relays and
solenoids.
If
the coil number is not recognizable in
the game,
the schematic will give the number for re-order;ng (for example,
reset relay
G-31-2000).
The nominal resistance of each coil
is
also
given.
Score motor operation
;s
detailed on
the
schematic.
See A-29
on the schematic.
The score motor is used in the coining,
reset and scoring operations.
The
sequence of operation table
indicates that the score motor, when energized, will actuate
contacts associated with cams one through twelve in the
positions indicated.
Cam
#1
is physically closest to the motor.
Cam switches are lettered alphabetically
starting with
itA"
for
the bottom of a switch stack. For example, the switch 2C, SCM,
on the schematic is driven
by
the cam in the second position
from
the motor and is physically the third switch assembly above the
cam in the switch stack. It is actuated by the score motor
driven second cam in positions
1, 2, 3, 4
and
5.
The motor receives a starting pulse from various sources.
It
will index itself one-half revolution
(180
0 )
by means
of a self-holding switch associated with Cam
#1.
Relays shown on the schematic are shown de-energized.
(See
A-2S).
A
relay consists
of
a coil of wire (electromagnet,
when energized)
armature or heel plate, plastic switch actuator, switch assemblies
and frame. When the coil
is
energized, the armature is pulled
to the coil
by
the electromagnetic
force created
by
the current
flowing through the turns of the coil. The plastic switch
actuator ;s connected to the armature. The moving armature
pulls the actuator and the long switch blades to the
energized position. Contacts that were closed in the
A