Star Tech Journal

Issue: 1988-November - Vol 10 Issue 9

Leland Quarterback
Springstick Action
Erickson and myself have been thinking of
putting together such a list and dividing
each game into arcade and street settings.
This is a huge undertaking and something
that the Industry desperately needs.
There are thousands of techs out there
reading STAR*TECH Journal. If most of you
would pick just one video game and put its
name and your recommended dip switch
settings (street or arcade) on a post card, I
would volunteer to put together such a list
for the Industry (if I get at least 50 cards). I
challenge you to take me up on that offer:
Send your cards to Alpha-Omega Amuse-
ments & Sales, 6 Sutton Place, Edison, NJ
~ 0881 7 or call me at (201) 287-4990.
Data East
Fuse Change
Phillip Stewart
Data East U.S.A. Inc.
San Jose, California
PROBLEM
We have found that under certain line volt-
age conditions, the three (3) amp line fuse in
the upright game is occasionally blowing
because of in-rush current. The steady state
current is one and one half (1.5) to one and
three quarter (1.75) amp.
SOLUTION
~
For both the nineteen ( 19) inch and the
twenty-five (25) inch monitor. You should
replace the fast-blow line fuse with a slow-
blow fuse. Effective immediately, we are
changing the three (3) amp fuse to a three (3)
amp slow-blow fuse in all factory games.
Dennis Sable
The Leland Corporation
El Cajon, California
SUBJECT
The Springsticks (Passing and Kicking) on
Leland football games are set to act in the
same manner as an actual throwing arm.
When the quarterback cocks his arm to the
left, his aim is to the right and vice-versa. It
might help to think of the springstick as a
slingshot -pull back left to aim right.
OUR CONCLUSION
Our design staff, after extensive testing of
this action, has concluded that the pull-left/
aim-right configuration is very popular and
extremely well suited to the feel of real foot-
ball.
YOUR CONCLUSIONS
You may like to perform your own test.
Simply switch the violet(+ 12VDC) and green
(Ground) wires on the horizontal pot on the
springstick and readjust this pot to factory
specifications. (See BUI'TONS AND CON-
TROL TESTin the diagnostics section of your
manual.) I am sure that, once you have tried
this test, you will agree with our findings.
NOTE
Be sure to change the wires on the horizontal
pot only.
***
SNK POW PCB Modification
Neal Zook
SNK Corporation of America
Sunnyvale, California
MODIFICATION
NOTE
SNK Corporation of America would like to
inform field service personnel of a modifica-
tion to the Prisoners of War PCB. The modi-
fications to the PCB consist of adding two or
three resistors onto the PCB to ensure
proper operation. This modification corrects
the following symptoms:
Please check the access time rating of the
Main Program Eproms DG 1 and DG2. These
Eproms must be 200 nsec (or faster) devices.
The access time rating can be determined by
the suffIXlisted on the device. Refer to the list
below for suitable devices. If your PCB has
Roms that are not listed below, or have -25
suffIXes, please contact SNK's Customer
Service department to get further informa-
tion or replacement Roms;
• Intermittent lock-up during Attract Mode
and Game Play Mode
• Games switches to Game Play Mode while
in Attract Mode
• Pressing Start to continue current game
deducts credits, does not start game
• Punch and Kick sounds go away during
game play
PROCEDURE
If your game experiences these symptoms,
please check and/ or add the following
modifications to the Prisoners of War PCB:
Mod 1 - Add a lK ohm 1 / 4 watt resistor from
pin 25 to pin 28 of HM6264 Ram at location
12K. If this resistor is already installed,
check the quality of the soldering as this may
have a bad solder connection.
If you have any questions regarding Prison-
ers of War or these modifications, please
contact SNK's Customer Service depart-
ment Monday thru Friday between 8:00 am
to 5:00 pm Pacific Time at (408) 736-8844.
Mod 2 - Add a lK ohm 1 / 4 watt resistor from
pin 6 to pin 16 of 7 4LS 15 7 at location l 5R.
If this resistor is already installed, check the
quality of the soldering as this may have a
bad solder connection.
Mod 2a - If the 7 4LS 157 at location l 5R was
produced by Motorola (as identified by the
"M" logo on the device), add another lKohm
1/4 watt resistor from.pin 10 to pin 16.
Murphy's Law #109

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