Removing the Joystick

Perform the following procedure to remove replace the joystick. (See Figure 3-1.) 1. Remove the control panel as described under Preventive Maintenance. 2. Disconnect the fast-on connectors from the six snap-action switches. 3. Use a -inch hex driver to remove the four nuts holding the joystick to the control panel. 4. Carefully lift the joystick out of the control panel. 5. Replace the joystick in the reverse order of removal. Reconnect the fast-on connectors to the snap-action switch...

Power OnOff Switch

The power on off switch is located at the bottom rear of the cabinet. (See Figure 5-1.) Please inspect your Xybots game carefully to ensure that the game is complete and delivered to you in good condition. Figure 5-1 shows the locations of the component parts of the game. Table 1-1 lists space, power, and environmental requirements. Inspect the factory-assembled game as follows 1. Examine the exterior of the cabinet for dents, chips, or broken parts. 2. Unlock and open the rear access panel....

1987 by Atari Games Corporation 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. 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 increased penalties...

Troubleshooting Static Sensitive Devices

Certain precautions must be taken when working with static-sensitive devices, e.g., microprocessors, field-effect transistors (FET), complementary metal-oxide semiconductors (CMOS), and other large-scale integration (LSI) devices that use metal-oxide semiconductor (MOS) technology. Static charge buildup in a person's body or leakage from an improperly grounded soldering iron can cause static-sensitive device failure. Before handling a static-sensitive device or a PCB with such devices attached...

Soldering Techniques

Observe the following recommendations when removing or replacing components soldered to a PCB. Poor soldering practices can damage a PCB or heat-sensitive electrical components. Choosing the proper soldering iron is essential before attempting to remove or replace soldered-in components. Excessive heat is a common cause of damage to a component or PCB. However, transient voltages from solder guns or improperly grounded soldering irons can also damage certain voltage-sensitive semiconductor...

Lubricating the Joystick

Perform the following procedure to lubricate and tighten the joystick. (See Figure 3-1.) 1. Remove the control panel as previously described in this chapter. 2. Use a -inch wrench to remove the four nuts holding the joystick to the control panel. 3. Apply a small amount of lithium grease (Atari part no. 178027-001) to the lubrication points shown in Figure 3-2. 4. Use a Phillips screwdriver to tighten the screws holding the positioning plate to the lower housing. 5. Apply a light film of light...

Replacing the Video Display

Perform the following procedure to replace the video display in the cabinet. (See Figure 3-3 ) 1. Carefully lift the video display through the front of the cabinet. 2. Position the display so that the four holes in the two mounting brackets align with the four studs in the cabinet. 3. Tighten the four mounting nuts and washers holding the mounting brackets to the cabinet studs. Figure 3-3 Control Panel, Video Display, and Speaker Removal Figure 3-3 Control Panel, Video Display, and Speaker...

Motion Object Test

The Motion Object Test appears is shown in Figure 2-9. The Motion Object Test indicates the condition of the motion-object buffer circuit. There are fifty-six objects, eight pixels wide, placed in two rows in the center of the screen. The following information is provided at the bottom of the screen OBJECT indicates the number of the motion object selected. PICTURE indicates the stamp number in ROM. HORIZONTAL indicates the horizontal position of the object. VERTICAL indicates the vertical...

Ramrom Test

The RAM ROM Test screens are shown in Figures 2-1 and 2-2. This test provides a visual check of the game RAM, ROM, and associated circuitry. If the RAM and ROM Test passes, the display advances to the Switch Test. The RAM ROM Test is divided into two sections. The RAM Test is performed first. If the RAM Test passes after a six-second delay, the self-test skips to the ROM Test without displaying any message. If the RAM fails, a message will be displayed in the center of the screen as shown in...

Introduction

Xybots is a one- or two-player game with a continuous buy-in feature allowing players to join in at any time. A color-coded control panel (left player blue and right player green) and game character allows for instant identification by players. Each player controls a special joystick and two buttons. The joystick is eight-way directional with an independently turning knob for left and right turns. Players use a blaster to fire upon the many Xybots in the maze. A button is located on each side...

Removing Integrated Circuits

The easiest and safest method for removing soldered-in integrated circuits (IC) from a PCB is to cut off each pin as close to the IC case as possible with a tip dyke (diagonal cutter) as shown in Figure 4-1. Use the proper soldering iron as previously described under Soldering Techniques. Then, to avoid excessive heat buildup in one area of the PCB, apply heat directly to each pin in a random order. Remove the loosened pin with the tip of the soldering iron or a needle-nose pliers as shown in...

Self Test

The Xybots game tests itself and provides visual and audible indications of the condition of the game circuitry and controls. Self-test information is displayed on the screen and through the sound system. No additional equipment is required. We suggest that you perform a self-test when you first set up the game, each time you collect the money, or when you suspect game failure. Thirteen self-test screens provide information pertaining to the game circuits and controls. The game enters the...

Caution

Solder guns are not recommended for removing or replacing soldered-in components on a printed-cir-cuit board. Solder guns can overheat a device, and their large transient voltage can damage a voltage-sen-sitive device. The following additional equipment is recommended for removing and replacing soldered-in components Solder Sucker Hand-operated vacuum tool used to remove liquified solder from the PCB. We recommend the top-of-the-line Soldapullt brand. Solder Wick Resin-soaked copper braid used...

Color Test

The Color Test is shown in Figure 2-11. This Test indicates the condition of the display color circuits. Table 2-4 Motion Object Test Description Table 2-4 Motion Object Test Description Displays a different set of pictures. inspect all pictures from 0 to 37FF. If position of the selected object. (See Toggles the horizontal flip bit of the Increases the priority of the selected Decreases the palette of the selected Increases the palette of the selected Increases the size of the selected ob...

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...