Williams Electronics WHIRLWIND - C-Side Test; Ending the Diagnostic Tests

TEST/DIAGNOSTIC
PROCEDURES
(Continued)
SWITCH
TESTS
(Continued).
2.
Switch
Edges.
From
the Switch Levels
Test,
press
ADVANCE.
Observe that the upper display shows the
message,
SWITCH
EDGES;
the lower
display
shows 07
(Switch Edges
Test identifier).
The right
portion of the lower
display
is
blank,
indicating
that
no switch is actuated.
This
test permits
the
operator
to
test
whether
actuating
a
switch
provides
the proper signal to the
System-11B switch
testing
program.
When
actuating
a
switch,
the
operator
should see the
switch's name
and
number in
the
displays.
If
no
indication appears
at the
time the switch
is
actuated, the
operator
then
knows
that there is
a
malfunction
associated with that
switch.
Using this
technique,
the
operator
can test each switch
appearing
in
the Whirlwind
switch
problem
reporting
displays
(either
at
game
Turn-On
or at
the beginning of the Diagnostic
Tests)
to determine
whether
the
switch
can be
actuated.
If
the
switch's
name and number are
displayed
while
the operator checks its
operation, the operator then knows that the reported
problem
with
that
switch
is
NOT
currently caused
by a switch
malfunction.
The operator
can then seek
other
causes
for
the reported
problem,
being
almost
certain
now
that
the
switch
did not fail. This test
is
also useful
when
the
operator
is
adjusting
the
sensitivity
of a particular switch
's actuation
mechanism.
Among
the
possibilities
is
the
fact
that
the
players
have not actuated that
switch because
of
some
other
problem;
the
operator should
try to
analyze what could cause the switch
to
be
missed
during game play,
and remedy
that
problem
cause.
Vlfi th
these new
tests,
switch
problems
are,
therefore, more
easily
isolated.
3.
Playfi eld
or
CPU
Board?
To
determine
whether
a
switch
problem
is in the playfield or the CPU
Board,
remove
connectors 1P8
and 1P10
from
the CPU Board. Begin the Switch Test.
Use a
jumper
wire
to simulate
switch actuation. For
example, placing a
jumper
between 1J10-9
and
1J8-2
should
(based on the
Switch-Matrix
Table)
should
produce an indication of switch
09
being actuated.
C-SIDE
TEST
From
the
Switch
Test,
press
ADVANCE.
Observe
that the upper
display shows a message,
C-SIDE
TEST,
and
that the lower display
shows 08
(C-Side
Test identifier). This
test confirms that Solenoid
A/C
Select Relay
(Sol.
12)
does
alternate between the
“A” and
“C"
sides of
the circuitry.
The
upper
display
then changes
to
show
the
‘side’
of the
circuit
being
tested, alternating
the
relay
between "SELECTED A-SlDE"
and
"SELECTED
C-SlDE", while
the
lower display
shows the state
of
the
C-Side Switch.
While
the
“SELECTED
C-SIDE” test
is
occurring,
when
the C-Side
Switch
closes, the
lower
display
shows
"C-SlDE".
when
the
“SELECTED
A-SlDE”
message appears,
the
word
“Err”
appears
in
the lower
display
to
indicate
that
there is no
electrical
connnection
from
the
C-
side to
the A-side.
The
message "Err" also
appears
whenever the C-Side
Switch
is
not operating
properly.
Causes of
improper
operation
can
be
blown
fuses
(F8
or
F2C) or
a faulty
relay
on the
Aux
Power Driver Board; failure
of
the 12
or 24
volt power
circuits; a
switch
matrix
failure;
or
faulty
connections
between
the
circuit boards
in
the
game's
backbox
(CPU
Board,
Aux
Power
Driver
Board, Backbox
Interconnect
Board).
To
halt the A/C
Flelay's
operation,
press
MANUAL-DOWN
and press
ADVANCE
to
activate
the A/C
Relay
manually.
ENDING
THE
DIAGNOSTIC
TESTS.
To
end the
Diagnostic Tests,
reach the
Car
Test
(09
in
the
Player
3 display),
use
AUTO-UP
and
press
ADVANCE.
The
backbox
displays should
show
the Whirlwind
game's
Identification
information (the
Id
00 screen). Use
MANUAL-DOWN, and
press
ADVANCE
to
reach
Adjustment
item 70
(INSTALL
FACTORY).
Use
AUTO-UP,
and
press
ADVANCE
to go
to
the
.
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