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Chapter
1
Itmt/i
1
mtion
How
to
Use
This
Manual
This
manual
is
written for
those
who
have
knowledge
of
electricity
and
technical expertise
in
video games,
such
as
game
operators
and. service
personnel.
It
pro-
vides
information
for
installing, testing,
and
trouble-
shooting the Tetris™
kit.
The
manual
is
divided
into the
following
chapters:
Chapter
1
describes the
installation
procedure
and
the
Tetris
game
play.
Chapter
2
contains
self-test
procedures.
Chapter
3 contains
troubleshooting procedures.
Chapter
1
provides
the
information required
to
install
the
Tetris
kit.
Carefully
read
the information
in
this
chapter before attempting
to
convert
any game.
WARMING
"
To
avoid
electrical
shock
,
unplug
the
video
game
cabinet during
the
conver-
sion
.
After
inspection
,
plug
it
only
into
a
grounded
3-wire outlet
JAMMA
Cabinet
Requirements
This
section,
describes the
requirements
for installing
the
Tetris
kit
into
a
japan
Amusement
Machinery
Man-
ufacturers*
Association
(JAMMA>-eompatible
cabinet:
*
Speakers 8
ohms
10
watts
*
On/Off
Switch: 6
amp
(or greater)
120
VAC
*
Coin
Door:
Dual
coin acceptors
*
Colo,
Meter: +5
VDC
or
+12
VDC
*
Power
Cord:
Three conductor
with
ground
caution
Do
not
unplug
or
plug
in
the
Tetris
game
printed-circuit
board (PCB)
edge
connec-
tor
while the
power
is
on.
You could
seri-
ously
damage
the
PCB
.
Power
Supply
'13J
1
JIL
%t>«
WK
M-MnM&W
A, I,
General,
requirements:
*
+5
VDC
±
0.25V
m
2,0
amps
*
+12
VDC
±
0.5V
@
TO
amp
CAUTION
Regarding
switching
power
supplies:
Tetris
uses
much
less current
from
the
5
power
supply
than
most
video
games.
Not
all
switching
power
supplies
will
stay
in
regulation with
such a
low
current (ap-
proximately
1
amp).
Before plugging
in
the
Tetris
game
PCB,
make
sure
your
switching
power
supply
will
stay
in
regu
-
lation
with
only
a
1
amp
load.
Otherwise,
the
switcher
may
produce
a voltage
greater than
5V and
seriously
damage
the
game
PCB.
Vidpn Dtenlav
Requirements
*
Color
RGB
monitor
*
Video
input
IV
to
3V
peak-to-peak
positive polarity
*
Sync
TTL
positive polarity
separate horizontal
and
vertical,
or negative
polarity
composite sync
*
Horizontal,
frequency
15.750
KHz
*
Vertical
frequency 60
Hz
*
Horizontal,
mounting
*
Recommended,
size:
19 inch
Installation
Precautions
During
installation:
1.
Be
sure
to
unplug
power
while
working
on
the
ser-
vice cabinet.
2.
Be
sure
all
connections
and
harness routing
are
se-
cure.
3.
Make
sure
all
grounding connections
are secure
and
properly
affixed.
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