Midway Hydro Thunder 25in Upright Service Manual

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GAME OPERATION
DESIGN PHILOSOPHY
This game uses an “Arcade Computer” to control its functions. The “Arcade Computer” is a hybrid cross
between the custom game computer circuits used in most games and the personal computers found in
many offices. The “Arcade Computer” uses a familiar case enclosure with a motherboard, plug-in cards, a
modular power supply, disk drives, etc., but it has been optimized specifically for playing this game. This
design permits improved upgrade and service access without sacrificing game ruggedness or reliability.
PLAYER CONTROLS
♦ BOOST Button
 This button allows a player to begin or continue play, select tracks and boats, etc. If the Boost feature
is active, this adds a burst of power (the button is illuminated when Boost is available during a race).
An on-screen gauge shows exactly how much Boost fuel has been collected by a player.
 
♦ THROTTLE Lever
Controls craft speed. Push up to move forward, down to back up. Stop is a detent position in between.
Reverse is spring loaded, but forward speeds may be maintained without attention (cruise).
♦ STEERING WHEEL
The steering wheel is used to aim the craft. It provides course condition feedback to the pilot.
♦ HIGH View
This button gives a distant aerial view of the track. The position is from above and behind the boat.
This is what a helicopter camera would see.
♦ LOW View
This button gives a close up aerial view of the track. The position is from above and behind the boat.
This is what a boat camera would see.
♦ PILOT View
This button shows the cockpit view. The position is from the driver’s seat inside the boat. This is the
view through the windshield as seen from normal driving perspective.
PLAYER CONTROL LOCATIONS 
						

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OPERATOR CONTROLS
CABINET CONTROLS
♦ The DIP Switches set some system variables. You can set other variables in the menu system.
♦ The Monitor Remote Control Board allows you to adjust the video display for optimum viewing.
♦ The Cabinet POWER Switch turns off the entire game, but does not reset game variables.
♦ The Computer POWER Switch turns off the computer. It is internally located. Use it for servicing.
CONTROL SWITCHES
♦ TEST MODE Button causes the game to enter the menu system. Press the TEST MODE button
briefly to run automatic tests. Or, press and hold TEST MODE Button until the Main Menu appears.
W ithin the menu system, the TEST MODE Button’s function is described on each screen.
♦ VOLUME DOWN and VOLUME UP Buttons adjust the game sound levels. To make minor volume
changes, press either button briefly. To make major changes, press and hold a button. In the menu
system, VOLUME UP and VOLUME DOW N moves the item selector through each of the menus.
♦ SERVICE CREDITS Button allots credits without changing the games bookkeeping total. SERVICE
CREDITS Button functions in the menu system are also described on each screen.
NOTICE: The Attract Mode volume level is separate from the Game Mode volume level.
For greater profits, raise volume levels to add realism and draw attention to this game.
OPERATOR CONTROL SWITCH LOCATIONS 
						

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GAME FEATURES
STARTING UP
Each time the game is first turned on or power is restored, it begins executing code out of the boot ROM.
These self-diagnostic tests automatically verify and report condition of the CPU and the game hardware. If
any of the individual tests fails, the game may display an error message.
Once all Power-up tests are complete, the game goes into the “attract mode”. Scenes and sounds from a
typical game alternate with previous high scores in an endless pattern until game play starts.
Insert currency to start the game. Players select a boat and a track. Play begins after a countdown period.
The game will progress until time is exhausted or play is over. If no more play is required, the game
automatically returns to the “attract mode”.
GAME RULES  Play instructions are on the information panels over and under the video monitor.
INDIVIDUAL PLAY
Insert currency to start the game. Select a boat and a track. Additional game information appears on the
screen when needed. Individual statistics are shown periodically during the race and its end.
PLAYER CHOICES
Any boat can be used on any track. Each boat handles and performs differently. Players will learn which
boats are best for a given track and driving style. Press one of the VIEW  buttons to select more boats.
CONTROLLING THE BOAT
The steering wheel and throttle control the boat. The steering wheel directs the boat while the throttle sets
its speed. A “BOOST” button on the throttle gives an extra burst of power. This button flashes when the
additional “BOOST” is available. In order to use “BOOST,” players must collect “BOOST” icons along a
track by steering directly under them. A gauge shows exactly how much “BOOST” power is available.
INDICATORS
On-screen indicators give the players information about their boat and those of competitors. Across the
top of the screen are numeric indicators for elapsed time, time remaining to pass the next checkpoint, and
race position. Gauges show engine R.P.M., vehicle speed, and “BOOST” fuel remaining.
DISPLAYS
A superimposed radar map shows the terrain and the position of all boats, with your craft at the center.
Computer-controlled boats are shown as green triangles, other human-piloted boats are shown as red
triangles, and police craft are shown as blue triangles. At the bottom of the screen, another display shows
the relative position of nearby boats.
GAME ACTION
Action begins when the three-two-one countdown ends and the announcer yells “Go!” Boats must pass
checkpoints within time limitations to continue play. Players must avoid fixed obstacles and other boats to
decrease their time between checkpoints. Ramps along the route allow players to advance more quickly,
collect hovering “BOOST” icons, or avoid obstacles.
Players can change their view of the action by pressing the view buttons on the left side of the control
panel. The game includes announcer comments, engine sounds, and other noises.
SCORING
Players who set a speed record for any track may enter their initials in the high score table. After a certain
number of tracks are completed (determined by the adjustments), additional tracks become available. 
						

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MENU SYSTEM
SYSTEM OVERVIEW
A series of on-screen menus present game variables and diagnostics. The Main Menu screen allows the
operator to view information, make changes, or verify equipment operation. Each Sub Menu screen
displays one specific group of choices. Detail Menus present data or run the required tests. You must be
at the Detail Menu level to detect errors, make changes, or activate tests. The operator control switches
are used to move through the menus, select items, and start or stop particular routines.
Each time the game is turned on or switched from normal play mode to the menu system and back, the
startup routine is activated. These basic system checks run automatically; their purpose is to detect those
faults that would prevent the game or the menu system from operating properly. Messages appear on the
screen as each item runs, including any error information. Successful startup takes less than one minute
to complete. W rite down any messages or information before proceeding to the menus or game play.
SCREEN LAYOUT
Each menu screen is different, but the material presented stays in the same physical location each time.
The color bar at the top center of each screen displays the current menu title.
The center of the screen shows data (menu items, video signals, statistics, reports, etc.)
The bottom of the screen displays messages (explanations, control functions, revision levels, etc.)
ORGANIZATION
The operator must activate and deactivate the menu system manually using control switches.
The Main Menu screen items are divided into categories: tests, statistics, audits, adjustments, etc.
Tests can verify proper operation of the equipment assemblies one at a time.
Other items allow operators to assess game performance and customize or return to factory defaults.
Sub Menu screen items present the operator choices within a category. Some items have no Sub Menu
while others may have more than one. It is always possible either to return to the previous menu or go on
to the next menu. The instructions are usually listed at the bottom of each individual screen.
Detail Menu screen items display specific information. The operator must command the system to get
results or to make changes. There is always a way to go back to the previous menus from this screen.
Switch functions are listed on each screen. Use the control switches to highlight an item on any menu.
Only one highlighted item can be selected at a time. Press the indicated button to select a highlighted
item. To return the game to normal play mode, use the switches to return to the main Operator Menu and
select START THE GAME, then press TEST. The menu screens will be replaced by the “Attract” scenes. 
						

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OPERATOR MENU
MAIN OPERATOR MENU SCREEN
The Operator Menu is the top-level screen of the Menu System. It presents the general categories of
operator selectable items. All subsequent screens show more detail than this one. This screen does not
permit changes. This is the only menu that allows the operator to exit from the menu system by choosing
Start the Game.
Unlock and open the door to use the operator control switches. Press the TEST button to enter the
Operator Menu screen. Use the Volume Up and Volume Down buttons to move up or down through the
list of items. Follow the on-screen instructions to continue to other menu screens.
The top center area of the screen between the game and manufacturer’s logos displays information about
major variables that affect game operation. FREE PLAY ON indicates that the game will start without
inserting currency or tokens). Network play off-line indicates that this game is not linked to another at
this time. These items may be changed from the Adjustments menus. 
						

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GAME AUDITS
GAME AUDITS MENU SCREEN
The Game Audits Menu provides the operator with options for various summaries of the game statistics
and audits. Detailed reports give statistics based on player selections and performance.
To view a report, use the operator control switches to select the Game Audits Menu and a specific report.
Press TEST to activate the report. Follow the on-screen instructions to continue to other menu screens.
Use the information in these reports to keep records of the game’s popularity and earnings. The operator
may also analyze favorite tracks, most frequently used boats, and other statistics. These screens report
information but do not permit changes.
Examine and record all game audit values before doing service or making repairs on this game.
NOTE: Use caution when clearing audit information. Once data has been cleared, it cannot be restored.
Use the “Save Audits to Floppy Disk” option on the Game Utilities Menu to save the data for
analysis. To clear these statistics or audits, go to the Game Utilities Menu. 
						

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GAME STATISTICS
GAME STATISTICS SCREEN
The Game Statistics report displays general information about coin counts and game usage. Use the
operator control switches to select Game Statistics from the Game Audits menu. Press TEST to enter
the Game Statistics display. This screen reports information but does not permit changes.
The Coin Count and Bill Count items permit the operator to assess currency collection. The other items
present information on game operation.
Reset, link, and sync statistics are measures of the game software’s ability to recover from conditions
that adversely affect game play. 
						

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AUDITS TOTALS
AUDITS TOTALS SCREEN
The Audits Totals display additional information about player statistics and ability. This information
assists the operator in understanding game usage and profitability. Use the operator control switches to
select Audits Totals from the Game Audits menu. Press TEST to enter the Audits Totals display. This
screen reports information but does not permit changes.
Free Games Won remains at zero if the bonus and award options are set to OFF. Refer to the General
Adjustments Menu for the bonus and award options settings.
Two-, Three-, and Four Player Races remain at zero if no other games are linked to this one. 
						

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AUDITS BY TRACK
TYPICAL AUDITS BY TRACK SCREEN
The Audits by Track report gives operators more specific information about player choices and ability.
Use the operator control switches to select Audits by Track from the Game Audits menu. Press TEST to
enter either display. This screen reports information but does not permit changes.
There are several pages of these audits. The name of the track appears at the top of the page. Press the
VOLUME UP or VOLUME DOW N buttons to move through these pages. 
						

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AUDITS BY BOAT
TYPICAL AUDITS BY BOAT SCREEN
The Audits by Boat report gives operators more specific information about player choices and ability.
Use the operator control switches to select Audits by Boat from the Game Audits menu. Press TEST to
enter either display. These screens report information but do not permit changes.
There are several pages of these audits. The name of the boat appears at the top of the page. Press the
Volume Up or Volume Down buttons to move through these pages.