Installation
4.
Try using the existing connectors. Cut the original
wire approximately 3 inches from the original con-
nector. Strip off about one-half inch
of
the insula-
tion.
5.
Slip
the
shrink
tubing
over
the
wire
you
just
stripped.
6.
Solder the
new
wire designated for that position to
the original wire
you
just stripped.
WARNING
Do
not simply tie
the
wires together. This
can cause nagging intermittent problems
through loose connections, oxidation, or
both, or a
fire
in
the
electrical system.
7. Slide shrink tubing
down
over
the
soldered wire.
Melt shrink tubing
around
all uninsulated in-line
wire connections. Do not
use
electrical tape.
It
can
unravel
and
cause problems with the electrical sys-
tem.
8.
Use wire tie wraps
and
secure the cable to the cabi-
net
where
it seems necessary.
Connecting
Power
Wires
1.
Connect
the
wires
that
are
designated
for
your
power
supply. You will
need
a supply
of
+5V
and
+ 12V The
new
game
may
not
require all
of
the
voltages
used
in the original game. Tie off any un-
used
wires.
2.
You will notice that there
is
more than
one
wire for
each
voltage. You must
double
up
some
wires as
called
out
in the footnotes
of
Table 1-2. This will
help to ensure that you
do
not overload the edge
connector
and
cause it to burn.
Connecting
Video
Display
Wires
Connect
the
wires designated for
the
RED,
GREEN,
and
BLUE
video guns along with the sync
and
ground
wires.
NOTE
JAMMA provides only negative compos-
ite sync. Most video displays accept neg-
ative
composite
or
separate
positive
sync. If your video display requires sepa-
rate positive sync, see page
3-1
of
this
manual or call
TELEHELP
at Atari Games
Customer Service.
Connecting
Speaker
Wires
Find the two wires (twisted pair) that are designated
for the
speaker
and
hook
them up.
1-6
Tetris
Connecting
Coin
Door
Wires
1.
Connect the designated wires to the coin switches
and
meter.
2.
Connect the
door
lamps to the appropriate voltage
on
the
power
supply. Some games have separate
power
supply outputs for the coin
door
lamps.
3.
Be sure to clean
and
lubricate the
old
coin mecha-
nisms.
Grounding
the
Cabinet
Find
the
ground lead
~reen)
of
the
115V input
power
line. Connect this
lead
in
daisy-chain fashion to
the
coin
door, control panel,
video
display,
and
power
supply. This
is
a safety requirement
for
the players'
protection.
This
AC
ground must
be
of
#18
AWG
wire
or
larger.
Cabinet
System
Checkout
Do the following before plugging
in
the Game
PCB:
1.
Apply
power
to the game,
and
check for the fol-
lowing voltages. If
any
voltage
is
incorrect, remove
power
and
correct the
problem
before proceeding
any further.
•
+5
volts
on
pins 3,
4,
C,
and
D
of
the 56-pin
PCB
connector
• +12 volts
on
pins F
and
6
of
the 56-pin
PCB
con-
nector
2.
Check that the display has
power
by
observing the
glow
of
the filament inside the neck
of
the picture
tube.
3.
Check that the attraction shield lamp has power.
4.
Check that
the
system ON/OFF switch functions
properly. Now
turn
off
the
power
to
the
game.
Tetris Printed-Circuit
Board
Installation
1. Find
the
Tetris
Game
PCB
(part no. A044809-0l)
and
install it
inside
the
cabinet.
Use
the
nylon
standoffs to secure the
PCB
through its mounting
feet.
2.
Connect the 56-pin connector to the
PCB
with the
label
on
the same side as the components
on
the
PCB.
The connector
is
keyed for
proper
orientation.
Table
1-2
shows the
JAMMA
pin
assignments.
3. Apply
power
to
the
game. Check that
the
Game
PCB
functions.
If
a video picture is
not
present, re-
fer to Chapter
3,
Troubleshooting, for suggestions
on
what
to do.
Testing
After Power-Up
The Tetris kit tests itself
and
provides visual
and
audi-
ble indications
of
the condition
of
the game circuitry
and
controls. Self-test information
is
displayed
on
the
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