STAR*TECH Journal
September 1993
WILLIAMS
DRACULA
WELLS-
DATA EAST
GARDNER
JURASSIC
BALL
K7000
PARK
EJECT
WASHED OUT
PINCHED
PROBLEM
PIX
WmEs
Pat Lawlor
Williams Electronics Games
Chicago, Illinois
Adam Spector
Recreational Concepts Inc.
Huntingdon, Pennsylvania
Steve Brittner
Three Rivers Coin
Pittsburgh, Pennsylvania
PROBLEM
PROBLEM
TEcHTIP
Washed-out picture on K7000
series monitors. Contrast and
brightness controls do not
help.
Beware of wires shorting to-
gether and/or being cut on the
upper right flipper coil stop.
Game will put out one ball
upon start, automatically eject
it onto the field then place an-
other ball into the shooter
lane. After you lose the first
_ ball, you are then able to play
~he ball that was in the shooter
lane.
1
SYMPTOM
SOLUTION
Ql, Q2, Q3 are bad. Although
they measure good, replace all
three.
SYMPTOMS
The auto shoot function is
turned off. Also there are no
errors showing through the
magnet test. All switches func-
tion in test.
This just happened to me. The
lower right flipper was turn-
ing on by itself.
SOLUTION
On some 13" monitors there
are 3 unmarked 9. lV Zener
diodes above R7, R8 and R9.
These may be open, also.
Re-route the harness and loose
wires away from the coil stop.
SOLUTION
The most likely candidates for
this problem description are
the trough switches. It is pos-
sible the right-most switch is
hanging up on the lift arm that
delivers the ball to the shooter.
This problem does not always
show itself in switch test. Any
~ne of the 3 switches could
Jause this problem.
STAR~*
TECH~
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