Atari TETRIS User manual

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Corrections/ Clarifications to
Tetl·is* IUt Il1stallatioll 111St1
9uctiOl1.S
\\i7Jen installing the Tetris parts onto the control panel,
please follow these instruc/ions (they replace the in-
s/ntctiollS 012 page 1-3 -COl/troL Pane/):
1. Unpack the control pancl cover (part: no. 046507-
01) and comrol panel dec:J.I (p:J.rt: no. 046505-01).
!\'ie::!sure the size required and cut the control panel
dec:J.I and cover to fit the existing control panel.
., Determine the loc:ttion of [he player pushbu[(ons
and joysticks on tile control paneL (See Figure 1-2.)
3. Cut holes in (he control panel and cover to loc:lte
the buttons, joysticks, and mounting screws, Note:
You c:m use the new cover to protect unused holes
in the control pando
4. Install the comrol panel deal onto the control pan-
el. Cut the :J.ppropriatc holes in the decal.
5. 11lSl:dl lhe LHIllLlll I:lbds Ull tht: t:ul1lrul p:l1ld 1.1I.:c.::11.
(Set.: Figure 1-2.)
6. Inst:J.ll the instruction bbel (part no. 046506-01) on
the control panel decal. (See Figure 1-2.)
7. Mount the control panel cover on the control p:mel
using the bolts and nuts provided.
S. Ins(::tll (he red player control buttons (part no.
178237-001) for the left player. (See Figure 1-2.)
9. Install the blue player control burtons (part no.
173237-005) for the right player. (See Figure
1-2.)
When installing the harness in the cabinet:
PLWER 1 controls are on the left side of the Clbiner,
:lIlU PLAYER 2 controls ;'Irc on thc right sidc of tile
cabinet.
Be sure to connect the Y/GN wire to me N.O. termi-
nals of both of the ROTATE button switches for player
2 (right player). Similarly, connect the W/GN wire to
the N.O. terminals of both of the ROTATE bu[[on
switches for player 1 (left player). Connect the com-
mon terminais of the switches to one of the BK.I\V
wires.
~fter (be installalion is complete:
Some gJ.me c:lbinets with switching power supplies
exhibit video noise interference. If your c::Ibinet pro-
UlIl:c.::; this cefc.:t:t, try Ill:ilalliJlg a .1 ~F. 50 volt (or
gre:Hl.!r) ceramic capac.:itor between tht! earth ground
and logic ground terminals on the switching power
supply.
If you need technic:ll assistance, call your distributor
or AWri Games Customer Service :It [phone].
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ATARf
GAM E S
Atari Games Customer Service • 675 Sycamore Drive • P.O. Box 361110 • Milpitas, California 95035
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ATARf
GAM E S
Kit Installation Instructions
no and © 1987, AcademySoft-Elorg. All rights reserved. Tetris licensed to Andromeda Soft-
ware Ltd.; and sublicensed to MIRRORSOfT LTD and Sphere, Inc.
© 1988 Alari Games Corp. All rights reserved, Original concept, design, and program by
Alexey Pazhitnov and Vadirn Gerasimov, respectively.

Copyright © 1989 by Atarl Games
Corporation. All rights reserved.
No part of this publication may be reproduced by any me-
chanical, photographic or electronic process, or in the form
of a phonographic recording, nor may it be stored in a re-
trieval system, transmitted, or othetwise copied for public or
private use, without permission from the publisher.
The game play,
all graphic designs, and this technical manu-
al are protected by the U.S. Copyright Act of 1976.
This Act provides for substantial penalties for violating feder-
al copyright laws. Courts can impound infringing articles
while legal action
is pending. If infringers are convicted,
courts can order destruction of the infringing articles.
In addition, the Act provides for payment of statutory dam-
ages of up to $50,000 per infringing transaction in certain
cases. Infringers may also have to pay costs and attorneys'
fees and face an imprisonment of up to five years as well as
fines of up to $250,000 in the case of individuals and up to
$500,000 in the case of corporations.
Atari Games Corporation will aggressively enforce its copy-
rights against infringers. We will use all legal means to imme-
diately halt any manufacture, distribution, or operation of a
copy of video games made by us. Anyone who purchases
such copies risks forfeiting such a game.
Published by:
Atari Games Corporation
675 Sycamore Drive
P.O. Box 361110
Milpitas, California 95035
Printed in the U.S.A IT
Produced by the Atari Games Technical Publications
Department.
Editing and Design: Andrea Dencker
Illustration: Mary Ohanessian Sumner
ii
Tetris
Notice Regarding Non-Atarl® Parts
WARNING
Use of non-Atari parts or modifications of
any Atari game circuitry may adversely
affect the safety of your game, and may
cause injury to you and your players.
You may void the game warranty (printed on the inside back
cover
of this manual) if you do any of the following:
• Substitute non-Atari parts in the game.
• Modify or alter any circuits in the game by using kits or
parts notsupplied by
Atari Games Corporation.
NOTE
This equipment generates, uses, and can radiate radio fre-
quency energy, and if not installed and used in accordance
with the instruction manual, may cause interference to radio
communications.
It has been tested and found to comply
with the limits for a Class A computing device pursuant to
Subpart] of Part 15 of Federal Communications Commission
(FCC) Rules, which are designed to provide reasonable pro-
tection against such interference when operated in a com-
mercial environment. Operation of this equipment in a resi-
dential area or modification to this equipment is likely to
cause interference, in which case the user, at his own ex-
pense,
will be required to take whatever measures may be
required to correct the interference. If you suspect interfer-
ence from an Atari game at your location, check the follow-
ing:
• All ground wires in the game are properly connected as
shown in the game wiring diagram.
• The power cord is properly plugged into a grounded
three-wire outlet.
• On games proVided with an Electromagnetic Interference
(EM!) ground cage, be sure that the game printed-circuit
boards (PCBs) are properly installed on the EMI ground
cage and that the end board is securely installed with all
screws in place and tightened.
If you are still unable to solve the interference problem,
please contact Customer Service at
Atari Games Corporation.
See the inside front cover of this manual for service in your
area.

Tetris
Table of Contents
1 Installation
3 Troubleshooting
How to Use This Manual .................................. 1-1
Video Display Sync Problems........................... 3-1
JAMMA Cabinet Requirements........................... 1-1
Horizontal Shifting............................................. 3-1
Power Supply Requirements.............................. l-l
In Case of Difficulty........................................... 3-1
Video Display Requirements.............................. 1-1
Installation Precautions ...................................... 1-1
Warranty
Tools Required....................................................1-2
Preparing the Existing Game for Conversion .. 1-2
Inspecting
the Kit ...............................................1-2
Installing
the Kit Parts ........................................ 1- 2
Testing After Power-Up......................................1-7
Adjusting
the Video Display...............................1-7
Setting
the Coin and Game Options..................1-7
Game Play...........................................................1-7
Tetris
Game Statistics..........................................1-8
2 Self-Test
RAM Test............................................................ 2-1
ROM Test ........................................................... 2-1
Switch Test......................................................... 2-1
Statistics Screen.................................................. 2-1
Coin Options ..................................................... 2-2
Game Options ................................................... 2-2
EEROM Reset Options........................................2-2
Video Display Tests ............................................2-2
Audio Test.......................................................... 2-2
iii

Tetris
Safety Summary
The following safety precautions apply to all game op-
erators and service personneL Specific warnings and
cautions will be found in this manual whenever they
apply.
WARNING
Properly Ground the Game. Players may receive an
electrical shock if this game is not properly grounded!
To avoid electrical shock, do not plug in the game un-
til it has been inspected and properly grounded. This
game should only be plugged into a grounded three-
wire outlet. If you have only a two-wire outlet, we rec-
ommend you hire a licensed electrician to install a
three-wire grounded outlet. If the control panel is not
properly grounded, players may receive an electrical
shock! After servicing any part on the control panel,
check that the grounding wire is firmly secured to the
inside of the control panel. After you have checked
this, lock up the game.
AC Power Connection. Before you plug in the game,
be sure that the game's power supply can accept the
AC line voltage in your location. The line voltage re-
quirements are listed in the first chapter of this man-
ual.
Disconnect Power During Repairs. To avoid electri-
cal shock, disconnect the game from the AC power be-
fore removing or repairing any part of the game. If
you remove or repair the video display, be very care-
ful to avoid electrical shock. High voltages continue to
exist even after power is disconnected in the display
circuitry and the cathode-ray tube (CRn. Do not touch
the internal parts of the display with your hands or
with metal objects! Always discharge the high voltage
from the CRT before servicing it. Do this after you dis-
connect it from the power source. First, attach one end
iv
of a large, well-insulated, IS-gauge
jumper wire to ground. Then
momentarily touch the free
end of the grounded
jumper wire to the CRT
anode by sliding the
wire under the anode
cap. Wait two minutes
and do this again.
Use Only Atari Parts. To maintain the safety of your
Atari game, use only Atari parts when you repair it.
Using non-Atari parts or modifying the game circuitry
may be dangerous, and could injure you and your
players.
Handle the CRT With Care. If you drop the CRT and
it breaks, it may implode! Shattered glass from the im-
plosion can fly six feet or more.
Use the Proper Fuses. To avoid electrical shock, use
replacement fuses which are specified for your original
game. Replacement fuses must match those replaced
in fuse type, voltage rating, and current rating.
CAUTION
Properly Attach All Connectors. Make sure that the
connectors on each printed circuit board (PCB) are
properly plugged in. The connectors are keyed to fit
only one way. If they do not slip on easily, do not
force them. If you reverse a connector, it may damage
your game and void your warranty.
Ensure the Proper AC Line Frequency. Video
games manufactured for operation on 60 Hz line pow-
er (used in the United States) must not be operated in
countries with 50 Hz line power (used in Europe). If a
60 Hz machine operates on 50 Hz line power, the fluo-
rescent line ballast transformer will overheat and cause
a potential fire hazard. Check the product identifica-
tion label on your machine for the line frequency re-
quired.
ABOUT NOTES, CAUTIONS, AND
WARNINGS
In Atari publications, notes, cautions, and warnings
have the following meaning:
NOTE -A highlighted piece of information.
CAUTION -Equipment and/or parts can be damaged
or destroyed if instructions are not followed. You will
void the warranty on Atari printed-circuit boards, parts
thereon, and video displays if equipment or parts are
damaged or destroyed due to failure of following in-
structions.
WARNING -Players and/or technicians can be killed
or injured if instructions are not followed.

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.
WARNING
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 QAMMA)-compatible cabinet:
• Speaker: 8 ohms 10 watts
• On/Off Switch: 6 amp (or greater) 120 VAC
• Coin Door: Dual coin acceptors
• Coin Meter: +5 VDC or +12 VDC
• Power Cord: Three-conductor with ground
CAUTION
00 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.
Chapter 1
Installation
Power Supply
Requirements
General requirements:
• +5 VDC ± 0.25V @ 2.0 amps
• +12 VDC ± O.5V @ 1.0 amp
CAUTION
Regarding switching power supplies:
Tetris uses much less current from the 5V
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-
1ation with only a 1 amp load. Otherwise,
the
switcher may produce a voltage
greater than 5V and seriously damage
the game
PCB.
Video Display
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.
1-1

Tools Required
• Drill with 3/32 inch, 1/4 inch, and 7/16 inch drill
bits
•
1/4 inch plex bit
•
1/4 inch plex hole saw
• Hole cutter 1-3/16 inch
• Phillips screwdriver
• Flat blade screwdriver
• Small flat blade screwdriver
• Socket
set
• Wire cutters and strippers
• Straight
edge
• Putty knife
•
Sandpaper
• Paint
• Squeegee
•
X-ACTOTM knife
• Wood
patch
• Fast-ons (if installing a new JAMMA harness)
Preparing the Existing
Game for Conversion
1. Turn off power to the game.
2. Remove the old PCB and game harness (if not
JAMMA).
3. Remove all control panel decals, labels, and con-
trols.
4. Remove any side decals from the cabinet. If your
cabinet has woodgrain sides, remove the old
graphics and adhesive (you can remove adhesive
with lacquer thinner).
5. Remove the video display plexiglass, display bezel,
attraction shield,
and marquee, if any.
6. Paint the cabinet, if required.
7. Wipe
down and vacuum the cabinet as necessary.
Inspecting the Kit
Verify each component with the kit parts list proVided
in Table 1-1. If any part
is miSSing or damaged, please
contact
your distributor and provide the following in-
formation:
1. Tetris kit serial number
2. Part number and description of any missing or dam-
aged parts
3. Date received
1-2
Tetris
table .·lH:r~~iG.tP~~t···
A.ij:i6500~OlilI/··
Pa.rtNo.
A044809;01
136C>66-1100
136066-1101
;137329-450
'··137412-101 .
137430-001
137535-0C>6
137577~00r ...
A046501...Q1
046502,.Q1
046511~01
()46511,.Q2
()46503,.Q 1
046504,.01
046505,.Q1
039450,.Q1
TM-328
171089-101
178237-001
178237-005
160044-001
178000~002
102020-001
178265-001
72-6612
75-5116B
177010-240
178114-032
:-,';'.::?::-:.;',::::::"" "::::C::':()':: ::::::~: :=:-:,-:-<
.. J.JeScription
Te~~M~;~p¢~A;,~.·'ii~pl~ce~bl~pirts
ontliisibOardaridtheiI: l()cationsare:··
.•..• TetfiSj>rograw RQMI¢:ic45F .....
·····TetrisGraphics~OM leat 35A
...• EARO.MIC·ar65F
...SLAPStICICit 4()F .....
... POKEY IC; at35H;35](2)
RAMICif40B
.... ····95(j2AMi(:t(jpr9c~ss9qTC;<lr§6E····
Assy;JAMMAH<lrne~s
B~zt!lll)isplay
La»el, Bezel
U¥1;13
eZe1
..... ........ •. ...••............• . •.........
••• Pilm{AUraction.w!.GraphiCs
Shield, AttraCtion
.. • .
l)e<:a,I,~()nt:(()l ~anel
. G6ei;ibi;waion
COY(!f, ControlPanel
Decal, Side Panel
(2)
rabel;
pt
odl.l
ct
rD:
.. Label; FCC
Instructioris,·TetdsKitIIlStallation •
Joysti~k; ... +Position,.1.251.'13Ik.Knob ... (2)
Button Assy,lted (2)
BU1:tohASsy, Blue (2)
Microswitch, Snap-Action, ",,I Gold Con~
tacts(4)
Bag, Anti-Static, Air Cap
PilIl}, Barrier, Air cap
Standoff, LcStyle,Nylon (4)
Screw,.Type.AB,Cross~Recesse<i,#6 .·x
3/4"Lg. (4) . . .................. .
Bolt,Cariiige,Blk;"i10~24X:l!i.~g .. (12)
.
N\lt,PolyLock;tI'~0::24(12) .
Tape,~olypropyleIle,qear,2" Wide
Note: Allparts are aquantityollea.c!J,~ceptwbere
noted inparentheses.
Installing the Kit Parts
Display Bezel
1. Find the display bezel (part no. 046502-01). Mea-
sure the size
of the existing display bezel or the re-
quired size to fit and cut the cardboard display
bezel to size. (See Figure 1-1.)
2. Place the bezel labels (part nos. 046511-01 and
046511-02) in the lower left and lower right cor-
ners, respectively,
of the display bezel. (See Figure
1-1.)
Product ID and FCC Label
• Place the Tetris product ID (part no. 038158-01)
and FCC label (part no. 039450-01) on the back of
the cabinet.

Tetris
FCC and Product
10
Side Panel
Decal
(1 of 2)
Attraction Shield
Attraction Film
"Avoid Leaving Holes"
Label
Display Plexiglass
from Previous
Game
"Build Solid Lines"
Label
Figure 1-1 Installing the Tetris Kit
Side Decals
• Find the side panel decals (part no. 046508-01). Wet
the left and right side panels of the cabinet with
slightly soapy water. Then position the decals as
desired. Remove any wrinkles in the artwork using
a squeegee.
Attraction Shield
• Find the attraction shield (part no. 046504-01) and
the attraction film (part no. 046503-01). Measure the
size of the existing shield or required size to fit and
trim both parts to size. Install them on the cabinet
as shown in Figure 1-1.
Control Panel
1. Unpack the control panel cover (part no. 046507-
01) and control panel decal (part no. 046505-01).
Measure the size required and cut the control panel
decal and cover to fit the existing control panel.
2. Determine the location of the player pushbuttons
and joysticks on the control panel. (See Figure 1-2.)
3. Cut holes in the control panel, overlay, and cover
to locate the buttons and joysticks.
4. Install the button labels on the control panel. (See
Figure 1-2.)
5. Install the instruction label (part no. 046506-01) on
the control panel. (See Figure 1-2.)
6. Cut holes into the cover to match the holes cut into
the control panel. Then trim as reqUired to protect
the control panel overlay and labels. (See Figure
1-2.) Note: You can use the new cover to protect
unused holes in the control panel.
7. Mount the control panel cover on the control panel.
8. Install the red player control
buttons (part no. 178237-
001) for the left player.
(See Figure 1-2.)
9. Install the blue player
control buttons (part
no. 178237-005) for the
right player. (See Figure
1-2.)
1-3

Control Panel
Cover Red Buttons
Tetris
Figure 1-2 Converting the Control Panel
NOTE
After buttons are securely placed and
tightened on the control panel, you can
place a small amount
of clear RTV silicon
on two
or three areas of the locknut to
keep the buttons from being unscrewed
from the top.
Joysticks
1. Unpack the joysticks (part no. 171089-101). Perform
final assembly of the joysticks using the documen-
tation included with them. Use the long joystick
handle if you have a wooden control panel and the
1-4
short joystick handle if you have a metal
control panel.
Mount the joystick as-
sembly base on the
control panel by
securing it with
the following
parts:
• 10-24 x 1 inch carriage bolt (part no. 75-5116B)
• 10-24 poly locknut (part no. 177010-240)
General Harness Installation
Skip to Grounding the Cabinet if your cabinet is al-
ready equipped with a JAMMA harness.
1. Find the JAMMA harness (part no. A046501-01) and
install it.
2. Refer to Table 1-2, JAMMA Pin Assignments, for
wiring information.
3. Connect the JAMMA harness to existing component
harnessing. You can do this using crimp splices or
by butt soldering. (The following describes the butt
soldering technique.)
CAUTION
Make sure that the wire inputs are connect-
ed correctly to the JAMMA connector.

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, ora
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. Ifyour 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. Checkthat 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

Installation
Tetrls™ Game Statistics
Location: ______ _
Date: _______________ _
Accounting Information
LEFT COINS
RIGHT COINS
2 PLYR STARTS
EASY STARTS
MEDIUM STARTS
HARD STARTS
CONTINUES
oPLY TIME
1 PLY TIME
2 PLY TIME
AVG. GAME TIME
Photocopy tbis page for use at multiple locations.
Minutes:Seconds
0:00-0:15
0:15-0:30
0:30-0:45
0:45-1:00
1:00-1:15
1:15-1:30
1:30-1:45
1:45-2:00
2:00-2:15
2:!5-2:30
2:30-2:45
2:45-3:00
3:00-3:15
3:15-3:30
3:30-3:45
3:45-4:00
4:00-4:15
4:15-4:30
4:30-4:45
4:45-5:00
5:00-5:15
5:15-5:30
5:30-5:45
6:00-12:00
12:00+
TM and @ 1987, AcademySoft-Eiorg. All rigbts reserved. Tetris licensed to Andromeda Software lid.; and sublicensed to MIRRORSOFI'LTD and
Sphere, Inc.
If! 1988 Atari Games CO/po All rights reserved. Original concept, design, and program by Ale.xry Pazhitnov and Vadim Gerasimov, respectively.
Tetris

Self-test
• 2P MIN shows the minutes played as a 2-player game.
• AVG shows the average game time in minutes and
seconds.
The
game time histogram is shown in the middle of the
screen. The histogram shows the length
of games played
in 15-second increments, except as indicated.
All statistical information is accumulated from the last
time the statistics were reset.
To reset the statistics, hold
the player 1 joystick to the right, the player 2 joystick to
the left, and press the player 2 start button. The message
WORKING appears for about 6 seconds and then the
screen will
be redrawn with all values zeroed.
To go on to the next test, press the player 1 start button.
Coin Options
The coin options screen indicates the current coin option
settings
and is used to change those settings.
Push the player 1 joystick left or right to select which op-
tion to change. Push the player 2 joystick left or right to
change the values
of the selected option. Note that the
factory default
of each option is highlighted in green.
• COINMODE indicates the current cost of each game.
• The
RIGHT and LEFT MECH MULTIPllER options each
allow you to set various coin denominations.
• BONUS ADDER is used to vary coin denominations or
reward players
who insert more than one coin at a
time. The option
of Free Play is also included as one
of the BONUSADDER selections.
To cancel the coin option changes and restore the origi-
nal settings, press the player 2 start button.
NOTE
If you replace the EEROM atlocation 65F or
if a hardware problem occurs, the coin op-
tions change
to the default (green) settings.
Press the player 1 start button to set the game for the op-
tions selected
and go on to the next screen. Exiting from
the coin options screen by turning off the self-test switch
will
not set the game for the selected coin options.
Game Options
The game options screen indicates the current game op-
tion settings
and is used to change those settings. Push
the player 1 joystick left or right to select which option to
change,
and push the player 2 joystick left or right to
change the value of the selected option. Note that the
factory default of each option
is highlighted in green.
• DIFFICULTY controls the overall difficulty level of the
game.
• ATTRACT MUSIC controls whether or not music is
played during the Attract mode (once every 10 minutes).
• AUTO HIGH-SCORE-TABLE RESET automatically resets
2-2
Tetris
the high-score table after 2000 games if no player has
achieved a high score in the last
200 games.
To cancel the game option changes and restore the origi-
nal settings, press the player 2 start button.
Press the player 1 start button to set the selected options
and go
on to the next screen. Exiting from the game op-
tions screen by turning off the self-test switch will
not set
the selected game options.
EEROM Reset Options
The EEROM reset options screen is used to clear or set
certain areas of the
EEROM (nonvolatile memory). Move
the player 1 joystick left or right to move the red box to
the desired option. Note that the factory default
of each
option
is highlighted in green.
• RESET HIGH-SCORE TABLE sets the High-Score Table
entries to the defaults stored in
ROM.
• SET OPTIONS TO FACTORY DEFAULTS sets the coin
and game options to the factory defaults stored in
ROM.
• INI11AIJZE EEROM initializes the data in EEROM. You
should only use this when you have replaced the
EEROM device located at 65F because this clears all
accounting information.
To cancel the
EEROM reset options and restore the origi-
nal settings, press the player 2 start button.
Press the player 1 start button to perform the selected re-
sets
and go on to the next screen. It may take up to eight
seconds to perform the requested resets. If you exit from
the EEROM reset screen by turning off the self-test
switch, none of the reset options will
be performed.
Video DisplayTests
You can use the following tests to adjust the video display:
• Screen Pattern Tests
Move the player 1 joystick left
or right to select
among the convergence, color purity, and several
other screen patterns. Press the player 2 start button
to change colors within each pattern.
• Color Test
• 256-Color Test
To move from one test to the next, press the player 1
start button.
Audio Test
The audio test indicates the condition of the music and
sound-effects circuits.
SOUND NUMBER indicates the sound selected by moving
the player 2 joystick left (decrements number)
or right
(increments number). To hear the sound, press the player
2 start button one or more times. Pulling the player 2 joy-
stick down (towards you) silences the audio.
Pressing the player 1 start button returns to the Switch
Test portion of the self-test.

Troubleshooting
No Sound
• Check the volume control adjustment.
• Check for proper voltage on the PCB edge connec-
tor.
• Check the wiring from the PCB to the speaker.
• Check the speaker for low resistance (approximate-
ly 811) between the + and -tabs.
Bad Sound
• Check the wiring to the speaker for bad solder con-
nections.
• Check the sound with another speaker.
3-2
Tetris
No Switch Input
• Check the ground connections to the switches.
• Check the wiring between the PCB and switches
for proper connection.
• Check the switches with an ohmmeter to verify
proper operation.
Switch Operates Incorrect Function
• Check the wiring between the PCB and switches
for proper orientation.
• Check the wiring for shorts between switch inputs.
Coin Meter Doesn't Function
• Check the wiring to the coin meter.
• Check that +5V to +12V is on the + side of the
meter.