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SYMPTOM: WEAK FLIPPERS
If flipper action is weak, transistor 07 or the flipper relay may
be faulty. Both parts reside on the Control Board. The relay
seldom fails. However a shorted or leaky driver transistor
07 occasionally produces weak flipper action. 07 is the
transistor that drives the flipper relay .
SYMPTOM: FLIPPERS OPERATE DURING
GAME-OVER MODE
If flippers operate during Game-Over Mode, they're picking
up ground when they shouldn't be. Expect a shorted Con-
trol Board transistor Q7. This transistor drives the flipper-
enable relay on the Control Board. The relay itself seldom
fails. Check the transistor first. If 07 is shorted or leaky,
replace it. Then reenter Game-Over Mode and recheck
those flippers.
COILS NOT OPERATING CORRECTLY
Some coils don't energize (pulse on) during gameplay. See
the Coil Table later in this chapter.
ACTION TO TAKE
[ ] 1.With power on, select COIL TEST from the Game
Checkup category. Use the right flipper button. To ad-
vance to the next test, press the right flipper button. To
back up to the previous test, press the left flipper button .
[ ] 2.Start the test by pressing the CREDIT button. When
the test starts, the game displays the words SINGLE COIL.
As each item is tested, the game displays it. ..
• The First Coil
.10
Number
.Output Number
.Connector Number
.Pin Number
This information remains displayed until you exit the test.
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