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VI. ROUTINE MAINTENANCE ON LOCATION:
Self-Test routines are written into the game design.
They are particularly useful for routine maintenance.
The tests are described below. The first test is automatic
and occurs on power-up. This test causes the MPU module A4
to examine itself for failures. Seven flashes of an LED
indicates proper operation. The second series of self-diag-
nostic tests causes the t~U to 'exercise' each of the other
modules in such a way as to make their faults, if any, obvious.
See Figure III and Page ii.
It is recommended that these tests be used several times a
week to check out the games before play. If faults are
discovered, they may be corrected on location if the oper-
ator has a stock of replacement modules. See "Trouble Shoot-
ing on Location".
r1PU HOnULE SELF-TEST:
At power on, the LED on the MPU module flashes once. (Flicker-
Flash). After a pause, it flashes six ~ore times and goes out.
A power-up tune is played to announce game readiness. This
indicates proper HPU operating condition and successful com-
pletion of the powe r+up test.
GAME SELF-DIAGNOSTIC TESTS: .
1) Pressing the Self-Test button inside the door initiates
the Self-Test routine. See Figures III and IV. All
switched lamps flash off and on continuously.
2) Pressing the Self-Test button again causes each digit
on each display to cycle from 0 thru 9, and repeat
continuously.
3) Pressing the Self-Test button again causes each solenoid
to be energized, one at a time, in a continuous sequence.
Hold both flipper buttons 'in' during this test. The
number appearing on the Player Score displays is the
same as the number assigned to the solenoid. The sound
of a solenoid pulling-in as a number appears indicates
proper operation. The absence of sound is improper.
If sound is absent, see Page 21 for help in Solenoid
identification.
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