Midway Hydro Thunder 25in Upright Service Manual

Operation2-32
VOLUME MENU
VOLUME ADJUSTMENT MENU SCREEN
The Volume Menu allows the operator to adjust the relative loudness levels. Use the operator control
switches to select Volume Menu, then press TEST to activate the sub-menu. Select an option with the
operator control switches and press TEST to activate it. Follow the on-screen instructions to save the
changes and continue to other menu screens.
Note:  Use these adjustments to raise the audio levels during the sound tests. They may be returned to...

Operation2-33
PRICING TABLE
NAMESTARTCONTINUECREDITS/COINCOIN 1COIN 2COIN 3COIN4BILLUSA1221/25¢.25¢.25¢$1.00USA2211/25¢.25¢.25¢$1.00USA3111/25¢.25¢.25¢$1.00USA4111/50¢, 3/$1.00.25¢.25¢$1.00USA5211/50¢, 4/$1.00.25¢.25¢$1.00USA6111/50¢.25¢.25¢$1.00USA7111/50¢, 3/$1.00.25¢.25¢$1.00USA8221/50¢, 4/$1.00.25¢.25¢$1.00USA9321/25¢, 4/$1.00.25¢.25¢$1.00USA10331/25¢, 4/$1.00.25¢.25¢$1.00USA 11421/$1.00, 2/$1.50.25¢.25¢$1.00USA 12431/$1.00, 2/$1.75.25¢.25¢$1.00USA 13441/$1.00.25¢.25¢$1.00USA ECA331/25¢,...

Operation2-34
NAMESTARTCONTINUECREDITS/COINCOIN 1COIN 2COIN 3COIN4BILLNORW AY221/2X1NKr, 3/5X1NKr1NKr1NKrDENMARK221/2X1DKr, 3/5DKr, 7/2X5DKr1DKr5DKrANTILLIES221/25¢, 4/1G.25¢1GHUNGARY221/2X10Ft, 3/2X20Ft10Ft20Ft 

Service3-1
HYDROTHUNDER

C H A P T E R
T H R E E
SERVICE
NOTICE: The term VGM refers to the video game machine.
CAUTION: This VGM uses complex electronic components that are very sensitive to
static electricity. Observe the following precautions before handling VGM electronics.
Failure to do so may void your warranty and could damage electronic assemblies.
• Before servicing electronics, turn off AC power to the VGM. W ait for capacitors to discharge.
• Before touching or handling electronic assemblies,...

Service3-2
SERVICING
Only qualified service personnel should repair VGM equipment. The following product guidelines apply to
all video game operators and service personnel. Notes, cautions and warnings appear throughout this
manual where they apply. Study the Safety pages before beginning service.
• Battery
CAUTION: If you install the battery incorrectly, it may explode! Avoid direct shorts
across the terminals or from terminals to ground. These batteries are designed for
very long life. Don’t attempt to...

Service3-3
Remove the CPU Board power cables at the CPU Board. Remove the circuit board retention bars.
Disconnect the Reset cable from the Filter Board and Motherboard, noting the orientation of the
connectors. Remove the Filter Board Assembly, Video Card, and Network Card. Remove the floppy
drive mounting bracket. Remove CPU Board mounting screws. Pinch the top of a CPU Board
standoff and raise the board off the standoff. Repeat this procedure at the other standoffs. Lift the
circuit board out of the...

Service3-4
 
20-9347
20-9275-2
 
Dashboard Assembly
 
 Steering Wheel Assembly
Inspect the motor, pulleys, and belt. If the belt is broken or shows signs of wear, replace it. Locate the
two nuts on each side of the motor mounting bracket. Loosen all four bracket nuts. Rotate the tension
adjustment bolt as necessary. Tighten this bolt until the belt is taut. Then restore correct tension by
loosening the bolt one full turn. Tighten the motor bracket nuts.
• Wheel Driver Board
Switch off power to the VGM....

Service3-5
Dollar Bill Validator
 (Use MARS AE2451-U5 UL Recognized currency changer)
Dollar bill validators or other currency acceptors may be installed in VGMs that were manufactured
with the additional wiring connector. Switch off power to the VGM and unplug the AC line cord.
Unlock the coin door and swing it open. Read the coin door label for additional information.
Remove nuts, spacers, and cover plate from the door. Change switch settings or make adjustments
before mounting the unit. If the...

Service3-6
• Diego Interface Board
Switch off power to the VGM. Unlock and open the rear door. Extract the harnesses from the board
connectors. Remove mounting screws and washers from the Diego Board. Remove the Diego Board.
Lift the board off its mounting posts. During reinstallation, tighten the screws: Start at the board’s
center and work toward the outer edge. If you aren’t reinstalling the board, store it in an anti-static bag
and protective container.
• Speakers
 Switch off power to the VGM. Unbolt...

Service3-7
• DIMMs (Dual In-line Memory Modules)
CAUTION: Static electricity builds up on your body. This static can damage or
destroy sensitive circuits. Before touching or handling electronics, discharge static
electricity by touching the power supply chassis.
DIMM circuits contain the computer read-write memory for this game. Switch off power to the game.
Remove the cabinet rear door. Remove the back of the Arcade Computer. Unplug the ribbon cable
from the floppy drive. Leave the other end of the...