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1A)
SYMPTOM:
Game does not play power-up tune when power is turned on. General
Illumination is present.
ACTION:
A) Turn power OFF. Open back box. Locate light emitting diode (LED)
on MPU module A4.
B) Turn Power ON. LED must flash 7X to indicate that module A4 is
good. Correct flash sequence is fticker/Ilash-pause-anc then six more
flashes and LED goes out.
C. If LED does not come on, or does not flash, or flashes, but less than
7X, turn off power. Replace MPU module A4.
CAUTION:
Replacement
MPU Module must have same Part Number or Incor-
rect operation will result! See Parts List for MPU Module Part
Number.
Turn power ON.
D) If game is correct, it is now ready for play. If game is not correct, refer
to Module Replacement procedure. (See Parts List.)
2A)
SYMPTOM:
Not all feature lamps light during game play.
ACTION:
A) With power ON, open front door. Press button (Self-Test switch)
once. If the game is correct, all feature lamps flash ON and OFF.
B) Carefully raise playfield or open back box to gain access to lamps.
C) Replace bulbs that do not flash.
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D) If game is correct, it is now ready for play.
E) If game is not correct, turn power OFF. Replace Lamp Driver Module
A5. Turn power ON and repeat A.
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F) If game is correct, if is now ready for play."
G) If game is not correct, turn power OFF. Replace MPU module A4.
See CAUTION, 1C. Turn power ON and repeat A.
H) If game is correct, it is now ready for play: If game is not correct, refer
to Module Replacement procedure. (See Parts List.)
28)
SYMPTOM:
One or some switched lamps always ON.
ACTION:
Repeat 2AA, AB, AE, and AF and, if necessary AG & AH.
3A)
SYMPTOM:
Display digits improper on one or several, but less than all Display
Driver module(s), A1. Improper: One or several segments always OFF,
digits mottled or several segments or digit(s) always ON.
ACTION:
A) With power ON, open front door. Press button (Self-Test switch)
twice. If the game is correct, each digit on each Display Driver Module A 1
(5 used/game) displays the count 1-9 and 0 continuously in all 6 digit
positions. Note defective Display Driver modules.
B) Turn power OFF.
CAUTION: High Voltage is supplied to the Display Driver Modules,
A 1, from the Solenoid Driver IVoltage Regulator Module A,3. Wait 30
seconds for High Voltage to Bleed Off.
G) Replace Display Driver module(s) A1. Turn power ON. Repeat A.
D) If game is correct, it is now ready to play.' If game is not correct, refer
to Module Replacement procedure. (See Parts List.)
3B)
SYMPTOM:
All displays improper (all five display Driver modules). Improper: Digit(s)
always on or off/segment(s) always on or off, all displays.
ACTION:
A) Repeat 3AA, and AB.
B) Replace MPU module A4. See CAUTION, NOTE, 1C. Turn power
ON. Repeat A.
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