Midway Touch Master 8000 Conversion From Merit Manual

TOUCHMASTER
®
 
CONVERSION 
CHAPTER 
 
Wiring 
 
WARNING: GROUND Video Game Machine (VGM). Failure to reconnect all ground 
wires or replace metal shields and covers with each mounting screw installed and 
securely tightened may result in radio frequency interference.
 
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544 

Wiring - 2    Midway Amusement Games, LLC 
CPU BOARD ASSEMBLY CONNECTOR CHART 
 
FUNCTION NO. PIN COLOR FUNCTION  NO. PIN COLOR 
Digital Ground  J1  1  Black  Screen Invert Ground  J6  1  Blue-W hite 
Key J1 2 N/C Key  J6 2 N/C 
+5VDC J1 3 Red +5VDC  J6 3 N/C 
+12VDC J1 4 Orange +12VDC  J6 4 Orange 
Analog Ground  J1  5  Black  Analog Ground  J6  5  Black 
Digital Ground  J2  1  Black  Not Used  J7  --  N/C 
Key  J2  2  N/C  Amplifier Volume In  J8  1  N/C 
Screen Invert  J2  3  Blue-W hite  Preamp...

Touchmaster® Conversion Kit    Wiring - 3 
TYPICAL CABINET WIRING (for models with 15-pin connectors)  

Wiring - 4    Midway Amusement Games, LLC 
WIRING ADAPTER CABLE (for models with 9-pin connectors)  

Touchmaster® Conversion Kit    Wiring - 5 
LED INDICATOR STATUS CHART 
DESIGNATION LOCATION  FUNCTION COLOR  STATE  MEANING 
LED 1  CPU BOARD 
ASSEMBLY PROCESSOR 
ACTIVITY RED  OFF  NO POW ER (No DC 
power at the CPU) 
        ON  LOCKED UP (Faulty 
CPU instructions) 
    BLINKING NORMAL OPERATION 
LED 2  CPU BOARD 
ASSEMBLY RESET 
INDICATOR GREEN  OFF  NO POW ER (CPU not 
operating) 
    ON NORMAL OPERATION 
    BLINKING ERROR  
(Continuous reset at the 
CPU) 
LED 3  CPU BOARD 
ASSEMBLY INTERFACE...

Wiring - 6    Midway Amusement Games, LLC 
NOTES... 
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TOUCHMASTER
®
 
CONVERSION 
CHAPTER 
 
Troubleshooting 
 NOTICE :  
The conversion kit         CPU Board Assembly is not 
interchangeable with the       standard Touchmaster
® CPU 
Board Assembly. The     assemblies look very similar but have 
different part numbers. The   incorrect assembly will cause sync and 
touchscreen calibration errors. 
This Video Game Machine (VGM) uses complex electronic components that are sensitive 
to static 
electricity. The following precautions must be observed and...

Troubleshooting - 2    Midway Amusement Games, LLC 
VGM Does Not Start 
Symptom Problem Suggested Solution 
• 
VGM appears non-
functional. 
• 
No audio 
• 
No fan 
• 
No video display. Lack of electricity  Check that the Power Switch is set to ON and VGM is 
plugged in. 
• 
VGM appears non-
functional 
• 
Fan works. Poor AC 
connection 1.  Check the air flow out of the cabinet by the fan. 
(This does not mean that voltages or signals are as 
they should be, but it does indicate that there is DC 
power...

Touchmaster® Conversion Kit    Troubleshooting - 3 
receiving some DC power from the Power Supply.) 
4.  Turn OFF VGM power. 
5.  Unplug the AC line cord. 
6.  Inspect the CPU Board Assembly. 
7.  Ensure that the DC Power connector is attached 
and fully seated onto the mating board connector. 
8.  Check the other wiring harness connectors in the 
same way. 
 
 WARNING:  DISCONNECT POWER. 
Do not remove or install any connector when 
power is turned on. Doing so will damage the CPU board assembly and...

Troubleshooting - 4    Midway Amusement Games, LLC 
 
  Faulty video fuse  1.  Examine AC line fuse on Video Monitor Board. 
2.  If fuse is faulty, replace with identical fuse of proper 
voltage and current rating. 
3.  Connect line cord and verify operation. 
  Poor voltage  Plug in VGM and turn ON power. 
Using the 20 Volt DC range on a digital voltmeter, 
measure DC voltages at the CPU Power connector 
pins. 
Refer to the Typical Cabinet W iring Diagram for specific 
wiring information and voltage...