Midway Hydro Thunder 25in Upright Service Manual

Wiring5-6
NETWORK INTERFACE CARD ASSEMBLY
20-10550
NETWORK INTERFACE LED INDICATOR STATUS CHART
DESIGNATIONLOCATIONFUNCTIONCOLORSTATEMEANING
LED 1
(LNK)
LEFT CENTER
UNDER JACK
LINK VERIFY
INDICATOR
GREENOFFNOT IN USE
(NO GAME LINK)
ONNORMAL
OPERATION
BLINKINGLINK FAULT
(NOTE 1)
LED 2
(ACT)
RIGHT CENTER
UNDER JACK
ACTIVITY
INDICATOR
GREENOFFNOT IN USE
(NO DATA)
ONRECEIVING DATA
(NOTE 2)
BLINKINGNORMAL
OPERATION
NOTES:
1.Intermittent cable or hub problems may cause blinking.  Must be continuous at all...

Wiring5-7
VIDEO GRAPHICS CARD ASSEMBLY
20-10551
VIDEO GRAPHICS CONNECTOR AND JUMPER STATUS CHART
DESIGNATIONLOCATIONFUNCTIONMEANINGSETTINGDEFAULT
J1LEFT CENTERVIDEOGRAPHICOPEN
(DB-15 ONSIGNALINFORMATION1-15„
(NOTE 1)BRACKET)OUTPUTTO INTERFACE
J2-J7NONE---NOT USEDOPEN„
(NOTE 2)
JP2NONE---NOT USEDOPEN„
(NOTE 2)
NOTES:
1.Connects to Interface Board Assembly through shielded cable.  Does not connect directly to monitor.
2.Manufacturer option connectors and jumpers.  Not required for this game. 

Wiring5-8
AUDIO AMPLIFIER BOARD ASSEMBLY
04-12529.1
AUDIO AMPLIFIER LED INDICATOR STATUS CHART
DESIGNATIONLOCATIONFUNCTIONCOLORSTATEMEANING
LED 1
(CR1)
UPPER CENTER
NEAR C3
FAULT
INDICATOR
REDOFFNORMAL
OPERATION
ONLOCKED UP
(NOTE 1)
BLINKINGOVERLOAD
(NOTE 2)
LED 2
(CR2)
LOW ER CENTER
NEAR U2 & U6
FAULT
INDICATOR
REDOFFNORMAL
OPERATION
ONLOCKED UP
(NOTE 1)
BLINKINGOVERLOAD
(NOTE 2)
NOTES:
1.Output protection circuit has been activated.  Clear fault and remove power to attempt a circuit reset....

Wiring5-9
DIEGO INTERFACE BOARD ASSEMBLY
04-12522.4
DIEGO INTERFACE BOARD SWITCHES
DESIGNATIONLOCATIONFUNCTIONPOSITIONSSTATEMEANING
S1-3RIGHT CENTER
NEAR JP7 & JP8
GAME
MODES
2OFF*NORMAL
OPERATION
ONFIXED IN
TEST MODE
S1-4RIGHT CENTER
NEAR JP7 & JP8
CABINET
SIZE
2OFFSTANDARD
25” CABINET
ON*39” CABINET
S1-8RIGHT CENTER
NEAR JP7 & JP8
RESET
MODES
2OFFW ATCHDOG
DISABLED
ON*W ATCHDOG
ENABLED
NOTES:
1. Use S1-3 only during testing or troubleshooting.  The game will not start if this switch is left ON.
2. Use...

Wiring5-10
DIEGO INTERFACE BOARD LED INDICATOR STATUS CHART
DESIGNATIONLOCATIONFUNCTIONCOLORSTATEMEANING
LED 1
(D1)
MIDDLE CENTER
NEAR JP12 & U10
INDICATORGREENOFFNOT IN USE
ONLOCKED UP
(NOTE 1)
BLINKINGNORMAL
OPERATION
LED 2
(D2)
MIDDLE CENTER
NEAR JP12 & U10
INDICATORREDOFFNOT IN USE
ONLOCKED UP
(NOTE 1)
BLINKINGNORMAL
OPERATION
LED 3
(D3)
MIDDLE CENTER
NEAR JP12 & U10
INDICATORGREENOFFNOT IN USE
ONLOCKED UP
(NOTE 2)
BLINKINGNORMAL
OPERATION
LED 4
(D4)
MIDDLE CENTER
NEAR JP12 & U10
INDICATORREDOFFNOT...

Wiring5-11
DIEGO INTERFACE CONNECTOR AND JUMPER STATUS CHART
DESIGNATIONLOCATIONFUNCTIONMEANINGSETTINGDEFAULT
J1 & JP1UPPER RIGHTVIDEOSIGNALS FROMOPEN
BETW EENINPUTCOMPUTER VIDEOJ1 ALL„
(NOTE 1)JP2 AND JP16SIGNALSGRAPHICS CARDJP1 ALL
J2 & J3LOW ER CENTERSERIALNOT USED IN THISOPEN„
BETW EENCOMMGAME (NO
(NOTE 2)JP7 & JP10SIGNALSUSB COMM)
JP2UPPER RIGHTVIDEOSIGNALS TOOPEN
BETW EENOUTPUTGAME VIDEOJP2 ALL„
J1 & JP6SIGNALSMONITOR
JP3UPPER RIGHTBLUEMATCHESOPEN„
BETW EENVIDEODRIVE LEVEL1 & 2
(NOTE 3)JP1 &...

Wiring5-12
WHEEL DRIVER BOARD ASSEMBLY
04-11127
WHEEL DRIVER BOARD LED INDICATOR STATUS CHART
DESIGNATIONLOCATIONFUNCTIONCOLORSTATEMEANING
LED 1RIGHT CENTER
NEAR C5 & P2
INDICATORREDOFFNOT IN USE
ONNORMAL
OPERATION
BLINKINGPOW ER FAULT
(NOTE 1)
NOTES:
1.LED 1 monitors a regulated power supply voltage source.  Must be on continuously at all times.  Flash
or blinking indicates an intermittent connection, a power problem, a circuit fault, etc. 

Troubleshooting6-1
HYDROTHUNDER

C H A P T E R
S I X
TROUBLESHOOTING
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...

Troubleshooting6-2
Coin Mechanism and Pricing Troubleshooting Table
SYMPTOMCAUSEREQUIRED ACTION
Improper settings at
Pricing Menu
1. Enter Menu System by pressing and holding
TEST MODE switch inside coin door. From
Diagnostics Menu, choose SW ITCH TEST. Use
tests to confirm operation of switches.
2. From Adjustments Menu, choose PRICING
MENU. Verify that units and credits are set
correctly.
• VGM (video game machine)
accepts currency or tokens,
but number of credits per
coin or bill is incorrect.
Faulty...

Troubleshooting6-3
VGM Startup Troubleshooting Table
SYMPTOMCAUSEREQUIRED ACTION
Power problem
1. Check that VGM power switch is on.
2. Inspect computer to see if fans are turning. If
not: Is computer power supply connected to its
power cable? Is computer power supply turned
on?
3. Plug VGM into AC power outlet. Verify presence
of AC line voltage.
Improper line voltage
switch setting
Turn off VGM power. Unplug AC line cord. Check
line voltage switch. If necessary, set it to agree
with local AC line...