Star Tech Journal

Issue: 1995-September - Vol 17 Issue 7

September 1 995
CD
STAR*TECH
Journal
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SUPER SHOT CAUBRATION
PROCEDURE
HAPP CONTROLS
ENERGIZE YOUR GAME ROOM!
• Press the 'A:. button to make the backboard
move forward one motor pulse and then
press the 'C' button to hold it there.
OPTICAL GUN
► Steel reinforced
hydraulic rubber hose
► Will replace industry
• After the first motor pulse, the "Travel"
item on the menu display should be in the
mid-40's range (from 42-47).
• If the Travel display is less than the mid-
40's,(in the 30's, for example), you should
loosen the nylock nuts on the Rotation sen-
sor bracket and move it in slightly -it is sen-
sitive if working properly!!
standard guns

A
► Gun holster
also available
► Simply drops into exist-
ing mounting pattern
• If the range is somewhere above the mid-
40's range, you should adjust the rotation
sensor bracket away from the reflective
tape.
• After adjusting the rotation sensor bracket,
you should power down the game and
make sure that the backboard is in the
Home position.
Note: Just adjusting the rotation sensor
bracket and then pressing the 'B' button to
return the backboard to it's Home position
will not do, or you'll find yourself chasing
ghosts. The game must be powered down
and reset to obtain accurate readings.
• Repeat this procedure until the Travel dis-
play is within the tolerances both in the
Home position and after the first motor
pulse position.
Once within the acceptable ranges, the gate
timing problem should be solved.
► Fully harnessed for both
Japanese and American
shifters
DRIVING CABINET

Turns both old and new
driving games into top
earning games

Cabinets can be
attached to create dual
driver cabinet

Dimensions: 80" H x
30"Wx60"D

Weight: 475 lbs.
Call or Fax for
our Catalog
STAR*TEcH
September 1995
Journal
':Just the Facts, eh?"
John Liikala • Canadian Amusements • Burnaby, BC • Canada
WELLS GARDNER SERIES
MODEL
7000
191<7689 HALF SCREEN DEFLECTION
Max Top Deflection
PROBLEM
Vertical Foldover
Maximum deflection on the
screen is 1/2 with vertical
foldover in the same picture.
Max Bottom
Deflection
SoLurION
This type of problem was a little
hard to find, but after it was
found, it made perfect sense to
what was wrong. (See the dia-
gram which is figure number two
for component location.)
This Figure Shows the Total Deflection on the Screen
When VR104 was Adjusted to its Maximum.
....
llO-~
R82 is a 820 ohm resistor and
when measured, had found to
have a resistance of 16.23 ohms
(This measurement is done with
the yoke unplugged from the
chassis.) Therefore, it was obvi-
ous that R82 somehow was in
parallel with RSI which has a
resistance of 15 ohms.
~l
T-"a
......
RM
I -
r
A11.
·'"
Then C49 (which should have
blocked the V de path between
RSI and R82) in the deflection
circuit was found to be at fault
with a resistance measurement of
1.23 ohms. Replace and verify.
Yep! That was it.
Capacitor C49 (.01ufd) Shown in Circled Area
1.,1(,,'IW
111.0.·

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