Basic HTML Version
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TEST/DIAGNOSTIC PROCEDURES (Continued)
SYSTEM~11 B SOUND CIRCUITRY TESTS (Continued)
If the previous checks did not isolate the problem, turn the Volume Control for maximum output.
Momentarily touch a powered-up AC soldering pencil on the center tap of the Volume Control.
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DO NOT use a soldering iron over 40 watts. Note also that cordless soldering
irons will NOT work for this test.
Hearing a low hum or a 'click' indicates that the power amplifier (Ut, TDA2002), the Volume Con-
trol, and the speaker are operating satisfactorily, as is the sound circuit cabling. Not hearing a
sound requires repeating the test with the Volume Control turned part way down, to determine
whether the Volume Control is faulty. Also, check the cable connectors for proper mating, and
that no broken wires affect this circuit .
PROBLEM ANALYSIS MESSAGES.
The SYSTEM 11B game program has a great capability to aid the operator and service
personnel:
At Game Turn-on (and also at the beginning of the ITesVDiagnostic Procedures)
after the game has been operating for an extended period, the player
score
displays now
may
signal with a message, "Press ADVANCE for Report", that the game program has detected a
possible problem with the game.
To obtain details of the problem, open ttl'e coin door and press the AUTO-UP/MANUAl-DOWN
switch to MANUAL-DOWN.
Press the ADVANCE button to begin displaying the message(s).
The following messages apply to your [email protected]~ IF@OO©:~game.
Adjust
Switch
#11.
This message indicates that at least one switch was stuck 'On' at game
tum-on or has NOT been actuated during ball play (for 90 balls or ••30 games) by displaying the
message "Adjust Switch ##", listing each problem switch by number.
(The game program
compensates the game play requirements affected by each disabled switch to allow 'nearly
normal' play. This helps keeplP@I!.D©1§I?©OO©~earning good profits!)
.
To verify the problem, refer to the Test/ Diagnostic Procedures text describing Switch Testing,
and check each reported switch using applicable Switc~ levels and Switch Edges tests. Always
check switch operation using a ball to Simulate game conditions. (Switch problems may often be
resolved by adjusting the wire switch actuators. fixing electric switch problems, securing loose
connectors. etc. Mechanisms using 'opto switches' (drop targets, etc.) need to be checked for
proper power connections (12V de and ground).
Pinball
Missing.
~@1!.8©~I?@~©I§ normally uses two balls; however,
it
will operate with only
one ball. This message announces that one is missing or stuck somewhere. When the ball is
located,
return it to the game via the Outhole.
Other possibilities for this problem could be
malfunctions of the Ball Trough switches (#11 and 12), the Ball Shooter switch (#14). or the
'Ramp to Wire' lock switch (#38).
Car Up Error
I
Car Down Error.
This message indcates that the car posinon is improper.
Perform the Car Test portion of the Test/Diagnostic Procedures to check several cycles of
operation. which should be error-free. Problem causes can include switch operation ("Car Up",
#31; or "Car Down", #32); slipping car belt, which requires cleaning or adjustment; intermittent or
inconsistent "Car Up/Down" relay (Solenoid 16), etc.
Dlverter
In Err.
I
Dlverter
Out Err.
This message means that the diverter is not
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positioning itself properly. Perfonn the Coil Test to verify that the diverter is functional; repair, jf
necessary.
If the diverter is functional, go to the Switch Edges Test to check the 'Diverter In'
switch (#36). An improperly attached spring can also result in a diverter error message, as can