Star Tech Journal

Issue: 1989-February - Vol 10 Issue 12

Bally Truck Stop Modifications
Ed Schmidt, Service Department
Bally /Williams
Chicago, Illinois
SUBJECT
Prototype to production game changes.
SYMPTOM
CHANGE
Rom Error: Intermittent game lock-up. This
Capacitor Change Affecting The n.vo Upper
Bally Flipper Assemblies: Remove the exist-
ing disc capacitor (.01 uF, lKV) wired paral-
condition occurs only in the multi-player
mode on proto 1 and 2 memory game roms
02 and 03. This condition exists from game
serial number 180000 to 182700.
SOLUTION
To correct, install new game roms, Proto 3
(12 Dec 88) on the control PC board at
positions 02 and 03.
CHANGE
Fuse Change: The flipper power supply PC
board F2 fuse value has been increased from
4 amp slow blow to 5 amp slow blow. NOTE:
The flipper power supply PC board is located
on the upper right hand comer of the back
box.
CHANGE
Play.field Fuse Value: The playfleld fuse pro-
tecting the slingshot and truck stop (upper
left vertical kicker) coils must be a 2 amp
slow blow. Note: This fuse is located on the
wiring side of the playfleld approximately
two inches to the left the lower left flipper
assembly. The fuse clip wire colors are
brown on one side and red with white trace
on the other side.
lel to the end-of-stroke switch. Install the
Williams capacitor (yellow), 2.2 uF, 250 V,
wired parallel to the end-of-stroke switch.
The Williams capacitor part number is
5045-12098-00. See Figure 1 below for.
proper Williams capacitor installation:
EtJS
sw1n:.1-1
BRACKe---~
2.2.v'I
C.APliCf rr? P.
Figure 1
Williams Capacitor Installation
A. Using a cable tie,
secure the 2.2 uF cap to the
E-0-S (U shaped) switch bracket.
B. Solder 2.2 uF cap wires
to the E-0-S switch as drawn.
New Duralink Replaces Alumilink
David E. Smith
Duralink Distributing Company
Garland, Texas
Thank you for switching to Alumilink flip-
per-links. In the past year we have been able
to distribute several thousand high strength
aircraft quality Alumilinks across the US
and abroad, in an attempt to eliminate the
burdensome problem of replacement of
other style links.
Also, it has come to our attention that a few
of our original proto-type Alumilinks (com-
posed with a lesser percentage of chromium
content, thus susceptible to elongation),
were accidentally distributed in 1988. These
protos were intended for in-house testing
purposes only.
Beginningin 1989, we'veintroducedaneven
stronger product, composed of heat-hard-
ened chrome-molly steel. We've renamed
this Duralink, to represent the added dura-
bility. This product can withstand unlimited
use.
Any vendor in possession of these parts may
return same through July 31, 1989. Upon
receipt we will redistribute to you the Dural-
ink, on a 1 to 1 basis, free of charge.
I""'\
Drew's • PO Box 632 • Fairforest, SC 29336
803/574-0162 • Fax 803/574-7680 • Telex 510601 2480

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