Midway Hydro Thunder 25in Upright Service Manual
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Troubleshooting6-14 Video Troubleshooting Table, continued SYMPTOMCAUSEREQUIRED ACTION • W hite areas at screen edges appear tinged with color • Dots at screen edges appear ovoid or cylindrical Picture tube dynamic convergence is out of alignment Have service bureau dynamically reconverge monitor. This procedure requires removing and repositioning yoke. Service bureau must follow instructions from monitor manufacturer. Faulty wiring 1. Check connectors and cables for wiring continuity. Video cables connect computer to circuit boards, and then to video monitor. 2. Assure connection of all cabinet ground wires, especially at video monitor chassis. Faulty monitor circuitry 1. Verify that video monitor operates correctly by connecting it to working VGM. 2. Assure that video monitor is correct type for this VGM. Video monitors with wrong resolution can’t lock sync. Improper sync signals 1. Check to see if Video Board puts out type of sync that your monitor requires. 2. Verify that jumpers are set correctly for monitor. 3. If necessary, change video sync jumper on Diego Board. Refer to W iring chapter for details. • Video tears or rolls, or has black bar down middle of screen Electromagnetic fields Move cabinet far away from machines, appliances, or VGMs (video game machines). Faulty wiring Check connectors and cables for wiring continuity from circuit boards to video monitor.• Missing colors Faulty monitor color drive circuitry Verify that video monitor operates correctly by connecting it to working VGM. • One color is dimmer or brighter than others • W hites appear tinted everywhere on screen Maladjusted color bias pots 1. Turn on VGM. 2. Enter Monitor Patterns Menu. 3. W atch Color Bars screen in mirror. 4. Adjust three bias pots for best colors. (Most monitor neck boards include these pots.) 5. Also check W hite Screen. Touch up controls. 6. If whites still seem tinted, have service bureau rejuvenate picture tube. • Picture is dim or fadedMaladjusted BRIGHTNESS pot or subnormal picture tube emission 1. W atch Color Bars screen. Adjust BRIGHTNESS and CONTRAST pots for greatest number of grays. You’ll find these pots on Monitor Remote Control Board, behind coin door. 2. If pots have no effect, have service bureau rejuvenate picture tube. • Picture is too narrowMaladjusted W IDTH pot Enter Monitor Patterns Menu. W atch Crosshatch Screen while adjusting W IDTH pot for best picture. You’ll find this pot on Monitor Remote Control Board, behind coin door. • Picture is too shortMaladjusted HEIGHT pot or damaged vertical circuit 1. Enter Monitor Patterns Menu. W atch Crosshatch Screen while adjusting HEIGHT pot for best picture. You’ll find this pot on Monitor Remote Control Board, behind coin door. 2. If pot has no effect, service vertical output circuit. • Picture seems shifted to one side Maladjusted HORIZONTAL POSITION pot Enter Monitor Patterns Menu. W atch Crosshatch Screen while adjusting HORIZONTAL POSITION pot for best picture. You’ll find this pot on Monitor Remote Control Board, behind coin door. • Keystone-shaped pictureShorted turns in yoke 1. Substitute working yoke. 2. Have service bureau converge monitor. 3. Retest monitor.
Troubleshooting6-15 Software Update Troubleshooting Table SYMPTOMCAUSEREQUIRED ACTION You skipped steps or performed them out of sequence. Return update components to kit, reinstall original parts in cabinet, and try process again. You connected linked VGMs (video game machines) to cabinet being updated. 1. Network communication circuits may have prevented full update. Turn off power to all connected cabinets. 2. Perform update on one cabinet at time. If power is off, you need not disconnect linking cables. • Update didn’t work • After update procedure, screen reports lower than latest version Installation error may have damaged device. 1. Inspect for bent or broken pins. 2. If you have another kit, try it. 3. Ask your distributor to check your floppy disk. NOTICE: Someday, software updates for your VGM (video game machine) might become available. These upgrades may improve your VGM’s performance or add new VGM features. Such upgrades tend to appear sometime after factory first releases VGM. Contact your distributor for information about updates.
Troubleshooting6-16 Miscellaneous Problem Troubleshooting Table SYMPTOMCAUSEREQUIRED ACTION Faulty fluorescent tube 1. Remove fluorescent tube from its sockets. If you find cracks or darkened ends, install new lamp. Clean tube. 2. Check continuity of both fluorescent tube filaments. 3. Verify that fluorescent tube operates by placing it in working VGM. Faulty lamp fixtureVerify that lamp pins make good connection with socket contacts. • Marquee lamp is intermittent or non-functional • VGM (video game machine) starts and plays normally Faulty wiringMeasure fluorescent lamp AC voltages. Check wiring and connector continuity from AC power chassis to lamp assembly. Obstructed fan 1. Check bottom and rear of cabinet for blocked airflow. 2. Move VGM away from sources of heat. 3. Turn off VGM power. Remove dust from vent holes with high-power vacuum cleaner. Faulty wiringCheck fan wiring and connectors. • VGM operates normally • Cabinet becomes warm after several hours of use Faulty fanCheck operation of all fans. • Error messages appear on screen Faulty hardware 1. Check any assembly (RAM, ROM, Battery, etc.) identified in error messages. 2. Call your authorized distributor for help with unresolved screen messages. Fan Location and Mounting
WARNINGS & NOTICES WARNING USE OF NON-MIDW AY PARTS OR CIRCUIT MODIFICATIONS MAY CAUSE SERIOUS INJURY OR EQUIPMENT DAMAGE! USE ONLY MIDW AY AUTHORIZED PARTS. * Use only authorized components and parts. Failure to do so will void warranty and may result in incorrect and/or unsafe operation. Substitute parts or modifications may void EMC directive or FCC type acceptance. * This game is protected by federal copyright, trademark and patent laws. Unauthorized modifications may be illegal under federal law. This also applies to MIDW AY GAMES INC. and HYDROTHUNDER logos, designs, publications and assemblies. Moreover, facsimiles of MIDW AY equipment (or any feature thereof) may be illegal under federal law, regardless of whether or not such facsimiles are manufactured with MIDW AY GAMES INC. components. WARNING Prevent shock hazard and assure proper game operation. Plug this game only into a properly grounded outlet. Do not use a cheater plug to defeat the power cords grounding pin. Do not cut off the ground pin. WARNING A very small portion of the population has a condition which may cause them to experience epileptic seizures or have momentary loss of consciousness when viewing certain kinds of flashing lights or patterns that are present in our daily environment. These persons may experience seizures while watching some kinds of television pictures or playing certain video games. People who have not had any previous seizures may nonetheless have an undetected epileptic condition. If you or anyone in your family has experienced symptoms linked to an epileptic condition (e.g. seizures or loss of awareness), immediately consult your physician before using any video games. W e recommend that parents observe their children while they play video games. If you or your child experience the following symptoms: dizziness, altered vision, eye or muscle twitching, involuntary movements, loss of awareness, disorientation, or convulsions, DISCONTINUE USE IMMEDIATELY and consult your physician. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. NOTICE - FCC COMPLIANCE LABEL NOTICE When MIDWAY ships a game, it is in compliance with FCC regulations. The FCC label on your cabinet is proof. If this label is missing or damaged, legal repercussions to the owner or distributor of the game may result. If your game does not have an FCC label, contact MIDWAY immediately. NOTICE 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 be transmitted, or otherwise copied for public or private use, without permission from the publisher. For Service:Call your Authorized MIDWAY GAMES INC. Distributor. MIDWAY GAMES INC. 3401 N. CALIFORNIA AVE. CHICAGO, ILLINOIS 60618-5899 UNITED STATES OF AMERICA Entire contents of this manual copyright © 1999 MIDWAY Games Inc. All rights reserved.