Star Tech Journal

Issue: 1980-December - Vol 2 Issue 10

4 _ _ _ _ _ _ _ _ _ _ S~~TECH
Universal
"Magical Spot''
Audio Modification
MAIN TRANSFORMER
In the first "Magical Spot" Upright
games, the Audio Voltage to I.C.'s 7 & 8
is too high.
The symptoms of this problem are either
no audio or audio fades out after turn-on.
To correct this problem, disconnect the
two yellow wires on the main transformer
and reconnect them to the two green
wires on the same transformer. This
lowers the Audio Voltage from 20.3 volts
to 18 volts.
MAIN TRANSFORMER
Midway
"Space Encounters"
Monitor Adjustment
Subject: Special Wells Gardner Monitor
Adjustment to prevent Distortion
1. Measure collector voltage at
Transistor 0203 and adjust to 64VDC
using the Video Bias pot R206 (with
contrast control at minimum setting).
2. Adjust brightness control to a
minimum setting (counter-clockwise).
3. Adjust contrast control to 20 degrees
of maximum (clockwise).
S~R-TECH _ _ _ _ _ _ _ _ _ _ 5
Centuri "Eagle" Pricing Mod
Option Switch Settings with Original Program
In order to change the coin setting on the
"Eagle" to 50¢ play, three roms (1, 6 and
Switch: On/Off: Description:
10) must be changed.
1
OFF
Replay for 30,000 Points
These roms are available through your
1
ON
Replay for 50,000 Points
distributor; check with them for availability.
2
OFF Japanese Docking
The switch setting for coins per game
Instructions
should be:
2
ON
English Docking
Number of Coins:
S4
S3
Instructions
1
( 25¢)
OFF
OFF
3
Not Used
2
( 50¢)
OFF
ON
4
Not Used
3
( 75¢)
ON
OFF
5
6
ON
ON
4
(1.00 )
OFF
OFF
1 Coin for 1 Play
Note: 5 or 6 must be off. With both switches
ON
OFF
1 Coin for 2 Plays
5 and 6 on, the game is set for free
OFF
ON
1 Coin for 3 Plays
play.
Free Play
ON
ON
R;
Cinematronics has received many inquiries
as to what modifications are necessary to
use your CPU exorcisor on Vectorbeam
Inc., CPU boards.
The modifications are as follows:
1) Cut trace as shown in Fig. A.
2) Tie pin one (1) of IC L 11 to +5 volt (vcc).
3) Install jumper from IC F6 pin 6 to IC 8
pin 11 .
Modification of
Vectorbeam
CPU Boards
FOR USE WITH
Cinematronics
CPU Exorcisors
Figure A
...-iii~~~~~~iiiiiiij;
-
Q-·-:::::o . .. ..
• :;)_-;,,•
.'.~::_
-
~;~.=q~:=f~~¾"~~rl'li:t::::IF--k:~~ ~-:__ __
•••••··
•,),.
The CPU board can now be trouble-shot in
the same manner as a Cinematronics
board.
After repair is complete, remove jumpers
and repair cut trace.

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