Rear View

ITEM NO. PART NO. QTY. REQ'D DESCRIPTION REF. DESG. Junction Box Metal Conn Quick Fem Fully .250 X .032 AWG 18-22 Conn Quick Fem Fully .187 X .020 AWG 18-22 Decal 2 Amp Fuse Switch SPDT Cherry Fuse 2 AMP 250V S.B. Holder Fuse Cord Line 3 Cond. ITEM NO. PART NO. QTY. REQ'D DESCRIPTION REF. DESG. 24 284-0007 1 Washer Flat Std O.D. l 4 25 283-0025 1 Nut Hex HD 10-24 Mach 26 282-0005 1 Bolt Carriage 10-24 27 310-0016 1 Insul TBG .187 ID 28 284-0004 2 Washer Flat Std O.D. 8 Button Plunger Yellow...

List of Illustrations

Figure 3 International Voltage Plug Selection 4 Figure 4 Interlock and Power On Off Switches 5 Figure 6 Location of Self-Test Switch, Volume Control and Option Switches 7 Figure 8 Game Option Figure 9 Game Price Figure 10 Coin Counter Option Figure 11 Opening the Control Panel and Replacing Switches 20 Figure 12 Control Panel Wiring Figure 13 Encoder Wheel Maintenance and Repair 22 Figure 14 Video Display Figure 15 Printed-Circuit Board Removal 25 Figure 16 Speaker and Fan Figure 17 Power...

Aztarac Table Of Contents

I. GENERAL INFORMATION PAGE NO. User Information Introduction Game Description Game Diagnostics Game Optional Switch Settings Installation amp Electrical Requirements ------------------------------14 110 220 VAC Conversion 110 220 VAC Interconnect Diagram 904-0006 Fig.l --------16 Routine Maintenace amp Service- Power Supply ----------------------17 Power Supply PSR-1105AP Troubleshooting Guide 18 Display PCB X-Y Monitor Adjustment Procedure 19 III. GAME PARTS DRAWINGS- PARTS LIST amp...

Starting Up

Switch on power to the game. A rug pattern appears on the CRT screen. When the rug pattern ends, the screen shows CHECKING SCRATCH RAMS, and then CHECKING ROMS. The next screen shows SUPER HIGH IMPACT FOOTBALL REVISION LEVEL, CMOS TEST OK and the COIN SETTING. The game then moves to the Attract Mode. Insert the desired amount of coins or tokens. Select which player receives the credit by pressing the appropriate Player Start Button. Continue pressing the Player Start button until all credits...

2 Specifications

Connected to JAMMA standard terminal 5V 5 2.5A or more and 12V 5 2.0A or more Temperature 0 C - 50 C, Humidity 10 - 85 no condensation Cabinets corresponding to JAMMA standard Direction of the monitor and the monitor signal Type of scanning retrace line Switchable to non-interlace interlace Horizontal synchronizing frequency 15.75kHz Vertical synchronizing frequency 60.0Hz 4-direction joystick 1x2 Button switch 1 x 2 Startswitch 1x2 Fix to the wooden install board of the cabinet 1 JAMMA...

To mount trackball to a wooden control panel without routing capability use

1. Fill any existing holes in the wooden control panel. 2. Place and secure Template 3 to your control panel in the desired location. NOTE The trackball should be as far away from the monitor as possible. 3. Carefully cut the hole for the trackball in the shape indicated on the template. The trackball should fit the hole shape exactly. 4. Drill the mounting holes as indicated. 5. Remove template and file down any rough edges. 6. Using the Trackball Orientation Template, cut a 3 hole in the...

Inspection

1. Remove the game from its shipping crate. 2. Inspect the entire outside of it for any signs of damage. Any scratches Dents Cracks Any broken glass or plastic Just look it over closely and make a note of any signs of damage. 3. Remove the shipping cleats from the bottom of the cabinet. UPRIGHT MODELS ONLY In order to help prevent easy theft of your game, you may wish to remove the Caster Wheel Assemblies from the bottom of your cabinet at this time. 4. Install the four levelers, one at each...

Model No Tpp2up Model No Tpp2upus

This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions 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 J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area...

Install Electronics Tray Components

CAUTION Board set electronic components are static sensitive. Prepare an anti-static work area. Ground yourself before removing circuit boards from their protective shipping materials. WARNING Don't connect cables to the circuit boards or power supply when the power is on. Otherwise, you'll damage VGM electronics and void your warranty. CAUTION Hard disk drives are fragile. Don't stack or drop hard disk drives. NOTICE If your monitor requires positive sync, remove jumper J2 on the SIO Board. 1....

Wire The Circuit Boards

NOTICE You must install the Main JAMMA Wiring Harness supplied with this conversion kit. This VGM's 49-way joysticks require wires and circuits not found in earlier VGMs. If the connectors in your cabinet don't fit onto the CPU Board or wire colors don't match the JAMMA Chart, contact your authorized distributor for assistance. CAUTION Insulate unused wires within the JAMMA cable, especially red, yellow, orange and black power wires. Secure unused connectors away from the CPU Board and its...

A New Features

The Centipede game has several new parts. Even if you are familiar with Atari games, you should note these important differences. The new parts are Mini-Trak Ball Assembly. The widely used Trak Ball assembly has been redesigned. The basis for this compact, simplified design is a two-part molded plastic frame. Fewer parts in this control make servicing easier, and its very smooth action is designed for greater player accuracy. The circuitry has non-volatile memory for part of the high score...

Inspection

Unpack the materials from the carton and inspect for obvious signs of damage. Use this checklist to be sure your kit is complete. 8 X 5 8 TAMPER RESISTANT SCREW

Tools Required

Drill with a 1 4-inch and 5 l6-inch drill bits, a 1 3 4-inch hole cutter or a 1 3 4-inch chassis punch , and a 1 3 l6-inch hole cutter 1 4-20 hex wrench Wire cutters and strippers Straight edge Squeegee X-ACTO knife Insulated wire connectors if you are installing a new JAMMA harness 5 32 Tamper-Proof Hex. Key Driver Red Square Boost Button With Lamp Packaging materials are not listed

Game Serial Number Location

Your game's serial number is stamped on a plate on the outside of the game. The same number is also stamped on the chassis of the TV monitor, Regulator Audio II PCB, Battlezone Analog Vector-Generator PCB, and Battle-zone Auxiliary PCB. Please mention this number whenever calling your distributor for service. BATTLEZONE ANALOG VECTOR-GENERATOR PCB BATTLEZONE ANALOG VECTOR-GENERATOR PCB

Service Manual

WILLIAMS ELECTRONICS GAMES, INC. 340 I N. California Avenue Chicago, IL 60618 Programmed Chip Summary Continued on Inside-Back Cover CRAM Controller Local Ctlr Video RAM Ctlr GPU 8M J U2S CPU Board U78 CPU Board U79 A-5346-3036-1 A-5346-3036 -2 A-5346-3036-3 Address Decoder Image ROM Ctlr Video RAM Seq. A-b34' -3 3 -4 A-5346-3036-5 A-5346-3036-6 ROM Board 25 ROM Board U26 ROM Board U27 A-5343-3036-1 5 A-5343-3036-1 6 A-5343-3036-1 7 ft M Sonrd U2V ROM Board 29 ROM Board U30 ROM Board U31 ROM...

0410861 088068 111274 168587825 1694782 1699221 1610077 1610139 1610363 1610443

Fan Assembly Blitz CPU Board Assembly Blitz 49-way Joystick Assembly Blitz Hard Disk Drive Assembly 49-way Joystick Cable Assembly 1 49-way Joystick Cable Assembly 2 Flexible Grommet .155 x .2 x 7 Blitz Perforated Electronics Cover Cable Tie 8 inch length Control Panel Cover Electronics Metal Mounting Plate Hard Disk Drive Shipping Container Wood Spacer for Joystick FBI Warning Label Registration Card Epilepsy Warning Label Electronic Device Caution Sheet FCC Canada Warning Label Program...

1988 by Atari Games Corporation

No part of this publication may be reproduced by any mechanical, photographic or electronic process, or in the form of a phonographic recording, nor may it be stored in a retrieval system, transmitted, or otherwise copied for public or private use, without permission from the publisher. The game play, all graphic designs, this technical manual, its accompanying schematic diagrams, and the display manual are protected by the U.S. Copyright Act of 1976, This Act provides for substantial penalties...

Warning

If a fluorescent tube drops and it breaks, it will implode Use care in handling. Remove Fluorescent Light Assembly Switch OFF power to the game. Remove the marquee glass above . Disconnect the fluorescent light assembly from its power cable. Remove the screws fastening the assembly to the cabinet and lift out the assembly. Switch OFF power to the game. Remove the tamper resistant screws from the steel speaker screen. Remove the baffle, taking care not to damage the speaker enclosure seals. The...

Selftest

A slide switch is provided to make the game run a Self-Test on itself. The SELF-TEST SWITCH is located just inside the cabinet on the right side of the coin door frame as you face it. To put the game into the Self-Test mode turn the game ON and let it warm up for a few minutes. Then slide the SELF-TEST SWITCH to the ON position and actuate the TILT switch on the back side of the coin door just below the door lock to obtain the Self-Test-Menue display on the monitor screen. When in the Self-Test...

Sicherheitshinweise

Um einen ordnungsgem en Betrieb dieses Ger tes zu gew hrleisten, mu vor Aufstellung, Inbetriebnahme und Gebrauch das Handbuch sorgf ltig gelesen werden. Sobald der Besitzer dieses Ger tes die Demontage, Aufstellung, Inbetriebnahme oder den Service einer anderen Person bertr gt, mu er sicherstellen, da diese Person vor Arbeitsbeginn die n tigen Sicherheitshinweise und die dazugeh rigen Kapitel des Handbuches liest und versteht. Um jegliche Unf lle w hrend des Betriebes zu vermeiden, m ssen obige...

Operation Maintenance and Service Manual

Complete with Illustrated Parts Lists Copyright 1980 by Atari, Inc. All rights reserved. No part of this publication may be reproduced by any mechanical, photographic, or electronic process, or in the form of a phonographic recording, nor may it be stored in a retrieval system, transmitted, or otherwise copied for public or private use, without permission from the publisher.

If a dollar bill validator is desired the Mars upstacker AE2411 is recommended

The information in this manual is current at time of its release. Fill out and mail in the game Registration card. Be sure to include the game serial number. For your records, write the game serial in the manual. MIDWAY Games Inc. reserves the rights to make modifications and improvements to its products. The specifications and parts identified in this manual are subject to change without notice. Section One - Operation and Troubleshooting Safety Set-up Inspection and Location Cabinet Assembly...

Cabinet Modifications

1. Verify the operation of the existing game before making any changes to the cabinet. Pay special attention to those components that will be used again after conversion is completed Power Supply, Video Monitor, Currency Acceptors, Wiring Harnesses, Cabinet Locks, Lighted Marquee, etc. . 2. Switch off power to the game. Disconnect the line cord from the A.C. power. Clear the work area. Cover or protect the non-wood items marquee, monitor, coin door, brackets, line cord, etc. . 3. For cabinets...

Operator Panel

ZAXXON is a microprocessor based, digital-integrated circuit computer video game. The heart of the computer is the CPU U24 , a Z80A located on the 834-0214 Assy IC Board A. The Alpha type chip MUST ALWAYS be used, as the Z80 is not fast enough to run the programs. Master timing is crystal-driven at 48.66 MHz, XI, Zone 6-D, Sht. 7, Assy. IC Bd. B, 834-0211 through Ql, Q2, Tl, U19, U38, U41, and frequency dividers Ul, U2, and U21. CPU timing 1H is taken from U1 p-14, through U45, U9, applied to...

Selftest

Slide switches are provided to make the game run a Self-T st on itself. The SELF-TEST SWITCHES are located on a mounting bracket on the inside left hahd side of the coin door. When in the Self-Test mode, the monitor screen will display the results of certain test functions it has run on itself. These will be discussed in more detail later. The control panel is held in place by three latches, one on the left side, one on the right side, and one in the center of the front of the cabinet. They are...

Asteroids Wiring Diagram 03515602 A

Wiring Diagran

lt XUiPf gt D W T C90Q-2-XX . COIN amp QO amp . cos V 30K Q AG-tAM O'ZOVOt-O AND ZO'A ZR AZAPTEfit. HAH HE S3 ASSY. v V lt S DdAf '- A. 035-2,I9-Of LEFT COiU SW ItJ.O.' CevOTtR. COIM SVJ KI.O.1 Right coiu sw in.o. TEiiT WlTcM SLAM SWITCH LEFT coihl LOCKOUT .OIL. CEUTER, COIN LOCKOUT COIL KlSHT COIN UJCKOOT JDIl_ NOT USED MOT USEDl

Tlx 9103351621

Light Baffle Sega

Copyright 1982 by SEGA Electronics, Inc., All Rights Reserved Introduction 1 Important Notes 2 Game Concept 3 Scor i 5 Option Selection 6 Circuit Description 8 Sel t-Test . 10 Troubleshooting Tips 11 Troubleshooting Diagrams 12 Parts Catalog 15 Cabinet Wiring Diagram 109 PENGO is a microprocessor based coin-operated electronic game, that makes extensive use of digital integrated circuitry and television monitor concepts. This manual is designed for the use of maintenance technicians who possess...

Location Of Casters And Leg Levelers Under Cabinet And Seat

4. This game is intended for use only in a fixed position. Ensure that the final adjustment raises the game so that the caster wheels are not touching the floor. Distribute weight equally on each 5. Place the box containing the control panel on the floor with its underside up. Open the container carefully and remove the packing material. Inspect the control panel for any signs of damage. 6. Lift the control panel assembly from its box and set it on its front side. Remove the wing nuts from the...

Section 1 Operation and Troubleshooting

Converting from a STREET FIGHTER II game Suggested Control Panel PC Board Converting from a typical video game Suggested Template Suggested Control Panel Installing PC Boards into a JAMMA Installing PC Boards into a Non-JAMMA Player Typical Control Control Control Switch Location Main Diagnostic Switch DIP Switch Test amp CPU amp Sound Monitor Burn-in Coin Game Game Standard Pricing Custom Pricing CPU Board CPU Board Sound Board Sound Board JAMMA Chart And interboard Cabinet Coin Meter Sound...

Player Panel Template 1610830

1. If you're assembling both kit 15909 and optional player panel 45494, skip to Step 19. If you're assembling just kit 15909, proceed with the next step. 2. Locate and unfold the player panel template. Temporarily stack newspapers, books, magazines, etc., on the template. The weight will flatten the template sufficiently for use. 3. If necessary, remove buttons, joysticks and T-nuts from the old player panel and cabinet front. Remove the panel covering and artwork from the previous game....

Diagram Trackball

Diagram Trackball

Installing the trackball as far away from the monitor as possible will prevent players hands from hitting the monitor glass when rolling the trackball forward. TRACKBALL MUST 8E CENTERED ON THE CONTROL PANEL When moking the hole for the trackball, follow the instructions, starting on the right, for the type of control panel you will be using. When installing the trackball, make sure the trackball is in the right orientation. Refer to picture below. Poirtior I ha ir c lt bali as l r Awaf Votn ih...

All Rights Reserved

NO PART OF THIS PUBLICATION MAY BE REPRODUCED BY ANY MECHANICAL, PHOTOGRAPHIC, OR ELECTRONIC PROCESS, OR IN THE FORM OF A PHONOGRAPHIC RECORDING, NOR MAY IT BE TRANSMITTED, OR OTHERWISE COPIED FOR PUBLIC OR PRIVATE USE, WITHOUT PERMISSION FROM THE PUBLISHER. FOR PERMISSION REQUESTS, WRITE MIDWAY MFG. CO., 10750 W. GRAND AVE., FRANKLIN PARK, IL 60131 II. Location and Inspection Installation Game Volume Adjustment Option Switch III. Game Self-Test Attract Ready to Play Play Two Player IV....

PINBALL Continental US 18003233555

JMPMMy ' gt Q60 gt Weil Belmont Avenue Franklin Pailt IWnO't, 60131 phone 312 451-9200 ' COPYRIGHT MCMLXXXIV BY BALLY MIDWAY MFG. CO. ALL RIGHTS RESERVED NO PART OF THIS PUBLICATION MAY BE REPRODUCED BY ANY MECHANICAL, PHOTOGRAPHIC, OR ELECTRONIC PROCESS, OR IN THE FORM OF A PHONOGRAPHIC RECORDING, NOR MAY IT BE TRANSMITTED, OR OTHERWISE COPIED FOR PUBLIC OR PRIVATE USE, WITHOUT PERMISSION FROM THE PUBLISHER. THIS MANUAL IS FOR SERVICE USE ONLY, AND NOT FOR GENERAL DISTRIBUTION. FOR PERMISSION...

Return Merchandise Authorization

All returned merchandise must have a Return Merchandise Authorization RAM number marked clearly on the outside of the package. You must obtain all RAM numbers from your authorized Incredible Technologies, Inc. distributor. Please have your Incredible Technologies, Inc. serial number available when calling for an RMA number. Merchandise returned without an RMA number will not be accepted. Advance replacement boards will be shipped to distributors or, at the distributor's request, will be...

Converting A Typical Video Game Cabinet Prepare The Cabinet

Cabinet Arcade Game

1. Verify operation of the old VGM before making changes to the cabinet. Pay special attention to components that you will reuse. Power supply, video monitor, currency acceptors, wiring harnesses, cabinet locks, lighted marquee, etc. 2. Switch off power to the VGM. Disconnect the line cord from the AC power. Clear the work area. Cover or protect non-wood items. Marquee, monitor, coin door, brackets, line cord, etc. 3. Remove old decals and artwork from the cabinet sides. Clean off glue...

Game Serial Number Location

Phonographic Process

Your game's serial number is stamped on a label on the outside of 'r-.t game. The same number is also stamped on the chassis of the video display, Regulator -Audio II PCB, and the Tempest Analog Vector-Generator PCB and Auxiliary PCB. Please mention this number whenever calling your distributor for service. Operation, Maintenance and Service Manual Complete with Illustrated Parts Lists Copyright 1981 by Atari, Inc. All rights reserved. No part of this publication may be reproduced by any...

Operators Manual

It is the responsibility of the operator to maintain customer safety at ALL TIMES, AND IT IS IMPERATIVE THAT THE DETAILS SET OUT IN THIS MANUAL 1996 NAMCO LIMITED. all rights reserved. No part of this publication may be reproduced by any mechanical, photographic or electronic process, or in the form of phonographic recording, nor may it be stored in a retrieval system, transmitted or otherwise copied for public or private use, without permission from

www midway com

Dual Product with Player-Selectable Games 1-Assembly 2-Operation 3-NFL Audits 4-NBA Audits 5-Wiring 6

Rom Summary

CPU-BOARD JUMPERS W1, W3, W6, W8, W10, W11, W14 and W16. Remove jumper W11 for cocktail games. TURKEY SHOOT is a trademark of WILLIAMS ELECTRONICS, INC. 1984 WILLIAMS ELECTRONICS, INC. TO ORDER REPLACEMENT ROMS from your authorized WILLIAMS distributor, specify 1 part number shown above, 2 ROM-label color, 3 REV level number on the label, and 4 which game the ROM is used in. schematic and logic diagrams

Xybots Coin Information and Game Statistics Sheet

Figure 1-1 Control and Switch Figure 2-1 RAM Test Figure 2-2 ROM Test Figure 2-3 Switch Figure 2-4 Coin Figure 2-5 Game Figure Figure Figure 2-8 Playfleld Test Figure 2-9 Motion Object Figure 2-10 Alphanumerics Figure 2-11 Color Figure 2-12 Color Purity Test Figure 2-13 Convergence Test Figure 2-14 Sound Figure 3-1 Leaf Switch and Joystick Figure 3-2 Joystick Disassembly and Lubrication Figure 3-3 Control Panel, Video Display, and Speaker Removal 3-7 Figure 4-1 Removing IC Cut-Pin Method Figure...

Table of Contents

Introduction 1 Important Notes 2 Game Scoring 4 Option Selection 5 Theory of Operation 7 Parts Catalog 20 700-0134 Top Assembly 21 Ground Plane Assembly 28 Volume Control Block Assembly 30 Game Interface Board Assembly 34 700-0137 T-8 Cocktail Top Assembly 36 T-8 Cabinet Accessory Assembly 40 Control Panel Assembly 43 8-Way Joystick Assembly 45 Power Supply Assembly 47 Regulator Unit 49 Nanao 700-0138 Top Assembly 65 700-0139 Top Assembly 72 Component Shelf Assembly 79 Operator Control Block...

Operators Manual

It is the responsibility of the operator to maintain customer SAFETY AT ALL TIMES, AND IT IS IMPERATIVE THAT THE DETAILS SET OUT IN THIS MANUAL ARE FOLLOWED PRECISELY, 1996 NAMCO LIMITED. all rights reserved. No part of this publication may be reproduced by any mechanical, photographic or electronic process, or in the form of phonographic recording, nor may it be stored in a retrieval system, transmitted or otherwise copied for public or private use, without permission from NAMCO EUROPE LIMITED...

Table Of Contents

Installation Game Volume Adjustment Option Switch Calibration Mode Attract Ready to Play Play r Two Player Cleaning Fuse Replacement Opening the Control Panel Removal of the Main Display Glass amp T.V. Bezel T.V. Monitor Printed Circuit Board Opening the Attraction No. 636 Lazarian Upright Header Fluorescent Fixture Assy 5-1 No. 636 Lazarian Upright Header Fluorescent Fixture Assy. Parts List 5-1 No. 636 Lazarian Upright No. 636 Lazarian Upright Front Parts No. 636 Lazarian Upright Rear No. 636...

Table Of Contents

I. Introduction Installation Game Volume Adjustment Option Switch Self-Test Attract Ready to Play Play High Score Initial Two Player Cleaning Fuse Replacement Opening the Control Panel Removal of the Main Display Glass amp T.V. T.V. Monitor Printed Circuit Board Opening the Attraction No. 333 Burger Time Upright Front No. 333 Burger Time Upright Front Parts No. 333 Burger Time Upright Rear No. 333 Burger Time Upright Rear Access Parts List 5-5 No. 334 Burger Time Cocktail No. 334 Burger Time...

Product Specifications

Equipment Characteristics Video Display Monitor Standard or medium resolution, RGB Composite, positive or negative sync DIP switch U12-2 sets resolution SIO Jumper J2 sets sync polarity VGM Characteristics Player Variables Parental Advisory Disclosure Suitable for all Ages NOTICE FCC COMPLIANCE. Installation of this kit into any existing product does not guarantee compliance with FCC requirements. You are solely responsible for FCC compliance for installations in other products. You must remove...

Part NoItemQuantity

Upright Typecockpit Typ

Copyright 0 1982 by Sega Enterprises, Ltd. o For prevention of illegal production and conversion of our machines, a seal showing ORIGINAL SEAL is pasted on each of the machines produced by SEGA, or a LICENCE SEAL is attached to each IC Board and other kits to be issued by SEGA for production of SEGA machines. o This is to prevent illegal acts to produce copies of machines and IC Boards without our consent or to produce, convert, or sell machines or IC Boards, and to operate such copies or...

Midway Mfg Co

Midway Mfg Doors

A BALLY COMPANY. . ' ' 10750 WEST GRAND AVENUE f FRANKLIN PARK, ILLINOIS 60131 , RHONE 1312 451-1360 CABLE ADDRESS MlDCO TELEX NO. 72-1596 M NOj 093 amp -t 03QQ 0000 _____,_________ .'. .' ' '' .'.- . . _ GENERAL INSTRUCTIONS FOR RALLY-X UPRIGHT 1. Remove shipping cleats located on bottom of cabinet. 2. Install four 4 provided leg levelers to bottom of cabinet and level cabinet. 3. The power is controlled by a switch located on top of the cabinet. Additional taps have been provided on the...

Safety Warning

In order to use this machine safely, be sure to read this Operators Manual carefully before installation and use of the machine. Whenever the owner of this machine entrusts disassembly, installation, adjustment, routine maintenance or trouble shooting to another person, the owner should ensure that they read the appropriate precautions and relevant sections of this manual before starting work. In order that no accidents occur when the machine is in operation, strictly follow the notes on safety...

A CAUTION CHECK POWER SUPPLY LINE VOLTAGE SELECTOR SWITCH Set the

110 220 VAC selector on the power supply for the correct local line voltage. Check the selector setting before switching on the game. 10. Reinstall the rear door and close it. Lock the rear door and remove the key. If required, install the extra padlock through the hasp. Install the screws at the top and sides of the rear door. Tighten the screws snugly. Close and lock the cash box and coin doors. NOTICE For additional security, the factory provides tamper-resistant screws and a matching wrench...