Basic HTML Version
Lower switch going down
Lower switch going up
Upper switch going up
Upper switch going down
Lower switch going up
Upper switch going up
Upper switch going down
Lower switch going down
TEST/DIAGNOSTIC PROCEDURES
(Continued)
BALL LIFTER TEST.
From the Switch Edges Test, press ADVANCE. Observe that the Player 1 and 2 displays show the
message, LIFTER TEST, and that the Player 3 displays shows 08 (Ball Lifter Test identifier). Next,
the Player
1
and
2
displays change to the message, LIFTER OFF.
The test checks the operation of the ball lifter mechanism and the associated actuation of the
upper and lower ball lifter switches. During the test, the displays provide information concerning
the test status (Off or On), the operation of the switches, detected errors, and the number of
switch operations without an error.
Pressing the Credit button starts the Ball Lifter test, as indicated by the Player
1
and
2
displays
showing the message, LIFTER ON. (Subsequent operations of the Credit button stop or start the
ball lifter test, and cause the message to alternate between LIFTER OFF and LIFTER ON.)
Information about the ball lifter test operation is shown in the Player
2, 3,
and
4
displays; for
example:
Player 1 and 2:
Player
3
and
4
[LIFTER]
[ON
X4]
[08
UL]
[
1
,000]
The number in the rightmost (7th character) positlon of the Player 2 display identifies the portion of
the test being performed, as designated in the following chart. The Player 2 display 7th digit can
also be
b!.anIs,
which indicates that the ball lifter has not yet completed a correct switch sequence.
7th Digit
of Plyr 2
1
2
3
4
Last Switch Made
Switch Expected Next
Whenever the "Switch Expected Next" is
not
actuated, the program detects this as an error and
causes a "buzzer" sound. The program then displays the physical state of the lifter at the time of
the error in the sixth position of the Player 2 display (shown as "X" in the example display). The "X"
is a number (defined in the following chart) that represents the physical state of the lifter when the
wrong switch closed.
",
6th Digit
Expected Switch
Detected Switch
of Plyr 2
1
Lower switch
Upper switch
2
Upper switch
Lower switch
3
Upper switch
Lower switch
4
Lower switch
Upper switch
Switch errors may be reported because the "Expected Switch" is intermittent. They may also be
reported because the "Detected Switch" is actuating erroneously.
To the right of the test number (08) in the Player 3 display, the letters "U" (upper) and "L" (lower)
will appear. Each letter should appear
momentarily,
when the lifter actuates the associated switch.
If either the "U" or "L" remains on constantly, then the associated switch is stuck closed and must
be repaired to operate properly. As each switch actuates, a unique sound should be heard.
The Player 4 display shows the number of successive switches closed without error. Along with
the buzzer, this Player 4 counter is reset when an error occurs.