Midway Touch Master 8000 Conversion From Merit Manual

							Touchmaster® Conversion Kit    Troubleshooting - 5 
VGM Can Not Be Played 
Symptom Problem Suggested Solution 
• 
VGM will not accept 
currency or tokens. 
• 
VGM does not start. 
• 
Audio functional. 
• 
Video functional. Cash door 
blockage Unlock and remove cash door. Empty the cash box. 
Inspect for counterfeit currency. Check vault and 
remove items that block the path from the coin 
mechanism. 
    Check each coin mechanism or currency acceptor by 
hand to ensure proper mounting. Remove the 
mechanism or acceptor and clear the currency path. 
Reinstall the mechanism and latch it. 
  Unlevel cash door  1.  Verify that the mechanism is level when the cabinet 
is in its normal position. 
2.  Ensure that the connector is attached and fully 
seated. 
3.  Repair or replace a bent or damaged mechanism. 
  Poor connection  Ensure that cables and wiring are connected to the 
currency acceptor or coin mechanism. An electronic 
currency acceptor may require some programming to 
recognize currency. 
• 
VGM accepts 
currency or tokens. 
• 
VGM does not start. 
• 
Audio functional. 
• 
Video functional. Poor switch  1.  Unlock and remove cash door. 
2.  Check each mechanism by hand to ensure proper 
mounting. 
3.  Verify that each release latch is closed and locked. 
4.  Test both good and bad coins to see if the 
mechanism or acceptor accepts and rejects the 
currency correctly. 
5.  Enter the VGM Menu System by pressing the 
SETUP button. 
6.  From the SYSTEM SETUP menu, go to 
DIAGNOSTICS and choose SW ITCH TEST. Use 
these tests to confirm the operation of each switch 
used in the VGM. 
  Poor connection  1.  Inspect internal cash door wiring connections. 
2.  Check connectors and cables for wiring continuity 
from CPU Board Assembly connector to coin 
mechanism or currency acceptor. 
3.  Examine the acceptor for programmable features. 
Some devices require operator adjustment for each 
specific type of currency recognized. 
4.  Refer to the manufacturer’s literature for assistance 
in setting the acceptor features to the required 
values. 
5.  Turn OFF VGM power. 
6.  Ensure that no parts or wires are caught in hinges 
or switch contacts. 
7.  Check for continuity in each of the suspect switch 
connections (Common to Normally Open or  
						

							Troubleshooting - 6    Midway Amusement Games, LLC 
Common to Normally Closed). 
8.  Replace faulty switches (bent levers, broken 
actuators, etc.). 
9.  Verify that each mechanism is operating properly 
by placing it in a known functional unit. 
• 
VGM accepts 
currency or tokens. 
• 
Number of credits 
per coin or bill is  
incorr ect. 
Faulty switch  1.  Unlock and remove the cash door. 
2.  Enter the VGM Menu System by pressing the 
SETUP button. 
3.  From the SYSTEM SETUP menu, go to 
DIAGNOSTICS and choose SW ITCH TEST. 
4.  Use tests to confirm operation of each switch used 
in the VGM. 
5.  Set the pulse width adjustment to long pulses if the 
bills do not register when inserted into the acceptor. 
6.  Verify that each acceptor is operating properly by 
placing it in a known functional unit. 
 
 
REAR VIEW  OF CABINET W ITH DOOR OPEN 
  
						

							Touchmaster® Conversion Kit    Troubleshooting - 7 
Touchscreen Malfunctions 
Symptom Problem Suggested Solution 
• 
Touchscreen is not 
accurate for two or 
more players. Dirty screen  Clean the entire cabinet frequently, especially the video 
screen glass and the touchscreen area. It is not 
necessary to switch off power to the VGM to clean the 
unit. Apply an isopropyl alcohol or warm water to a 
clean cloth or sponge, then use this to wipe the surface. 
Do not apply the cleaner directly on the unit. Liquids 
can drip into circuits and cause erratic VGM operation. 
 Overzealous 
touching W arn players to use only one finger at a time. 
Simultaneous touches confuse the touch controller. 
 Poor player 
grounding Some players may find that touchscreen response 
improves when they touch the surface of the metal 
cabinet with one hand as they operate the touchscreen 
with the other hand. 
• 
Touchscreen 
chooses incorrect 
items or does not 
respond when 
certain areas are 
touched. Poor calibration  Unlock and remove cash door. Enter Menu System by 
pressing the SETUP switch inside the coin vault. From 
the SYSTEM SETUP menu, go to DIAGNOSTICS and 
choose the CALIBRATE TEST (refer to Operation for 
additional details). Use these tests to confirm that the 
touchscreen is detecting and properly tracking finger 
position in all areas of the screen. 
    From the DIAGNOSTIC menu, choose CALIBRATE to 
adjust the touchscreen accuracy. Follow the on screen 
instructions to optimize the touchscreen for sensitivity 
and linearity. 
  Dirty screen  1.  Turn OFF the VGM. 
2.  Unlock and open the rear door. 
3.  Remove the top cover and bezel (refer to Servicing 
instructions). 
4.  Clean the touchscreen, especially areas normally 
hidden by the bezel. 
  Faulty controller  Ensure that the Touchscreen Controller is operating 
properly by placing it in a known functional unit. 
• 
Touchscreen reacts 
in opposite corner 
from where touched Improper signal  1.  Turn OFF the VGM and remove AC line cord. 
2.  Open rear door. 
3.  Verify that pin 3 of connector P6 is electrically 
grounded. 
4.  Temporarily disconnect the blue/white wire at pin 3 
of connector P6. 
5.  Tape or insulate end of blue/white wire and secure 
to wiring harness. 
6.  Plug in and turn ON the VGM. 
7. Recalibrate touchscreen. 
• 
Player touch controls 
are intermittent or 
completely non-
functional. Poor connection  1.  Unlock and remove the cash door. 
2.  Enter the VGM Menu System by pressing the 
SETUP button.  
						

							Troubleshooting - 8    Midway Amusement Games, LLC 
• 
VGM starts normally. 3.  From the SYSTEM SETUP menu, go to 
DIAGNOSTICS and choose the SW ITCH TEST. 
Use these tests to confirm the operation of each 
switch used in the VGM. 
  Poor calibration  From the DIAGNOSTIC menu, choose CALIBRATE 
(refer to Operation for additional details). Follow the on-
screen instructions to optimize the Touchscreen for 
sensitivity and linearity. 
  Poor power  1.  Unlock and remove the top cover. 
2.  Observe the CPU Board Assembly as you touch 
the screen. 
3.  If the CPU senses your touch, you will see a glow 
from a red LED. 
4.  A glow will be seen from a green LED on the end of 
the Touchscreen Controller if there is voltage in the 
Touchscreen circuits. 
5.  Refer to LED Indicator Status Chart. 
6.  Turn OFF VGM power. 
7.  Inspect the Controller and, if necessary, lift the 
device up just enough to expose the Touchscreen 
connector. 
8.  Check that the cable is fully seated in the 
connector. 
9.  Ensure that the Touchscreen Controller is 
operating properly by placing in a known functional 
unit. 
 W rong board 
assembly Verify that any replacement CPU Board Assembly is for 
use in the conversion kit. The CPU Board Assembly for 
standard production Touchmaster
® units will cause 
calibration errors in this kit. 
• 
“Touch Controller 
Not Found” error 
message Poor connection  1.  Turn OFF the VGM power. 
2.  Unlock the snap latch plunger handles and lift up 
the rear edge of the CPU Board Assembly. 
3.  Release the cable ties and lift the controller up just 
enough to expose the Touchscreen connector. 
4.  Check that the cable is fully seated in the 
connector. 
5.  Ensure that the Touchscreen Controller is 
operating properly by placing in a known good unit. 
  
						

							Touchmaster® Conversion Kit    Troubleshooting - 9 
FAN
SPEAKERCOIN METER
CALIBRATE BUTTONSETUP BUTTON
CASH DOOR
CONNECTOR
 
CUTAWAY OF COMPONENTS BEHIND CASH DOOR  
						

							Troubleshooting - 10    Midway Amusement Games, LLC 
Audio Malfunctions 
Symptom Problem Suggested Solution 
• 
Audio is non-
functional. 
• 
Video is functional 
• 
VGM appears to 
operate normally. Volume set to zero 
in software. 1.  Unlock and remove the cash door. 
2.  Open the rear cover. 
3.  Enter the VGM Menu System by pressing the 
SETUP button. 
4.  From the SYSTEM SETUP menu, go to 
DIAGNOSTICS and choose SOUND TEST. 
5.  Verify that volume has not been set at zero. 
6.  Change the level to maximum to make the VGM 
audible. 
 Volume set to zero 
on CPU Board 
Assembly 1.  Select an endlessly repeating sound track. 
2.  W ith the screen audio level at maximum, turn the 
master volume control on the CPU Board 
Assemblyfull up. Do not come into contact with the 
high voltage leads. 
3.  Now reduce the master volume until the sound is 
as loud as possible without distortion. 
4.  Use the screen adjustments to set a comfortable 
playing level. 
   W hile in the SOUND TEST menu, select PLAY and use 
the NEXT box to advance through all the game sounds. 
Use sounds to confirm operation of the audio amplifier 
and speaker. Note if any game sounds are 
unintelligible, voice messages, strange noises, missing. 
 Poor connection  1.  Turn OFF VGM power. 
2.  Verify correct cabinet wiring for this VGM. 
3.  Ensure that the speaker is properly connected to 
the audio output wires from the Audio connector. 
4.  Verify speaker continuity. 
5.  Refer to Typical Cabinet W iring Diagram for 
specific wiring information. 
 Poor power 
continuity 1.  Turn ON VGM power. 
2.  Using the 20 Volt DC range on a digital voltmeter, 
measure DC voltages present at the Power 
connector pins. 
3.  Verify the +5V, -5V and +12V sources. 
4.  Refer to the Typical Cabinet W iring Diagram for 
specific wiring information and voltage limits. 
5.  Using the 2 Volt AC range on a digital voltmeter, 
measure the same DC voltages as above. 
6.  Any reading here indicates that the supply voltages 
are unstable and may contain ripple or noise. 
7.  Verify proper operation of CPU Board Assembly by 
placing it in a known functional unit.  
						

							Touchmaster® Conversion Kit    Troubleshooting - 11 
• 
Audio is distorted or 
muffled. 
• 
A constant low hum 
may be present. 
• 
Sounds may be 
missing.   1.  Unlock and remove the cash door. 
2.  Enter the VGM Menu System by pressing the 
SETUP button. 
3.  From the SYSTEM SETUP menu, go to 
DIAGNOSTICS and choose SOUND TESTS. 
These tests will verify some of the functions of the 
audio circuits in this VGM. 
  Bad speaker  1.  Turn OFF the VGM. 
2.  Unlock and remove the cabinet cover. 
3.  Locate the speaker. 
4.  Ensure that it is FULL RANGE (100 to 10,000 Hz 
response) and rated for at least 15 W ATTS 
continuous power. 
 Poor connection  1.  Inspect the speaker and its wires. 
2.  Ensure that no loose parts or wires are caught in 
speaker cone, terminals, mounting screws, or stuck 
to the magnet. 
 Bad board 
assembly 1.  Verify that the sound ROM is correct for this VGM. 
There is only one sound ROM in this VGM set. The 
ROM circuit is labeled with the assembly number 
and the software version. 
2.  Check that the cabinet wiring is correct for this 
VGM. 
3.  Ensure that all cabinet ground wires are connected. 
4.  Refer to the Typical Cabinet W iring Diagram for 
specific wiring information. 
 Poor voltage  1.  Using the 2 Volt AC range on a digital voltmeter, 
measure voltages at the speaker terminals. Any 
reading here indicates that the supply voltages are 
unstable and may contain ripple or noise. 
2.  Verify that the speaker is operating properly by 
placing in a known functional unit. 
  
						

							Troubleshooting - 12    Midway Amusement Games, LLC 
Video Malfunctions 
Symptom Problem Suggested Solution 
• 
Monitor appears 
non-functional. 
• 
Audio is functional. 
• 
Controls operate 
normally. Lack of electricity  1.  Unlock and remove cabinet cover. 
2.  Verify that AC Power is connected to the Video 
Monitor. 
3.  Inspect the neck of the CRT under low light level 
conditions. 
4.  You will see a glow near the CRT base if voltage is 
in the filament circuits. (This does not mean that 
other voltages or signals are as they should be, but 
it indicates that some monitor circuits are receiving 
power.) 
  Poor connection  1.  Turn OFF VGM power. 
2.  Verify that the Video Signal and the Remote 
Adjustment Board connectors are fully seated on 
the Video Monitor Board Assembly. 
3.  Ensure that the video connector was installed onto 
the board with the pins in the same orientation as 
the original connector. 
4.  Check the other monitor connectors in the same 
way. Important:  Do not operate a monitor 
without a Remote Adjustment Board. 
  Faulty fuse  Examine the AC line fuse on the Video Monitor Board 
Assembly. If the fuse is faulty, replace it with an 
identical fuse of the proper voltage and current rating. 
  Loose parts  Ensure that no loose parts or wires are caught or 
pinched by chassis or the mounting brackets. 
Reposition the thick, red CRT high voltage wire away 
from other components under the CPU shelf. 
 Incorrect 
adjustments 1.  Check that the brightness (intensity) and contrast 
have not been set to their minimum levels. 
2.  Verify that the Video Monitor is operating correctly 
by placing it in a known functional unit. 
• 
The power-up self-
test is functional. 
• 
Game does not 
appear. 
• 
Audio is not 
functional. Error message  1.  Note and record any error messages that occur 
during self-test. 
2.  Turn OFF VGM power. 
3.  Restore power after one minute. 
4.  Note and record any new messages that appear on 
the screen. 
5.  Unlock and remove the cash door. 
6.  Enter the VGM Menu System by pressing the 
SETUP button. 
7.  From the SYSTEM SETUP menu, go to 
DIAGNOSTICS and choose VIDEO TEST. These 
tests will verify some functions of the video circuits. 
 W rong board 
assembly 1.  Turn OFF VGM power.  
						

							Touchmaster® Conversion Kit    Troubleshooting - 13 
2.  Verify that the CPU Board Assembly is correct for 
this VGM. Each CPU Board is marked with the 
manufacturer name, assembly number and the 
hardware version. 
  W rong ROM  1.  Verify that the ROM instruction set is correct for this 
VGM. There is more than one ROM in a VGM set. 
Each ROM circuit is labeled with the assembly 
number and the software version. 
2.  Turn ON VGM power. 
3.  Using the 20 Volt DC range on a digital voltmeter, 
measure DC voltages at Power connector pins. 
4.  Refer to Typical Cabinet W iring Diagram for 
specific wiring information and voltage limits. 
5.  Adjust the +5V source if it is variable. 
6.  Using the 2 Volt AC range on a digital voltmeter, 
measure the same DC voltages as above. Any 
reading indicates that the supply voltages are 
unstable and may contain ripple or noise. 
7.  Compare CPU Board Light Emitting Diode states 
with the LED Indicator Status Chart. 
• 
Monitor does not 
lock onto signal and 
provide a stable 
picture. 
• 
Colors are missing, 
etc. Poor connection  Check connectors and cables for wiring continuity from 
the CPU Board Assembly to the Video Monitor. 
 W rong board 
assembly 1.  Ensure that the CPU Board Assembly is correct for 
this VGM. Monitors for some VGMs require 
different sync polarity than Midway production units. 
Units with incorrect polarity or unusual sync 
connections will result in what appears to be 
horizontal tearing or complete loss of sync. 
2.  Verify that the Video Monitor is operating correctly 
by placing it in a known functional unit 
• 
VGM operates 
normally. 
• 
Video wavers or 
rolls, has dark bars, 
uneven colors, etc. Poor connection  1.  Check connectors and cables for wiring continuity 
from the CPU Board to the Video Monitor. 
2.  Ensure that all the cabinet ground wires are 
connected, especially at the Video Monitor Chassis. 
  Interference  1.  Move the cabinet away from machines, appliances, 
other VGMs, etc. Some equipment normally emits 
very strong electrical or magnetic fields. 
2.  Verify that the Video Monitor is operating correctly 
by placing it in a known functional unit. 
  
						

							Troubleshooting - 14    Midway Amusement Games, LLC 
Miscellaneous Malfunctions 
Symptom Problem Suggested Solution 
• 
VGM operates 
normally. 
• 
Cabinet gets very 
warm after several 
hours of use. Poor air flow  1.  Check bottom and rear of cabinet for blocked air 
flow. 
2.  Move VGM away from sources of heat. 
3.  Turn OFF VGM power. 
4.  Apply a high power vacuum cleaner to fan vent 
holes to remove dust. 
 Poor cooling 
system Unlock and open the rear door. Ensure that all fans are 
connected and operating at full speed. 
• 
Touchscreen 
requires excessive 
recalibration to 
maintain VGM 
accuracy. Touchscreen abuse  1.  Clean the entire cabinet frequently, especially the 
video screen glass and the touchscreen area. It is 
not necessary to switch off power to the VGM to 
clean the unit. Apply an isopropyl alcohol or warm 
water to a clean cloth or sponge and use it to wipe 
the surface. Do not apply cleaner directly on the 
unit. Liquids could drip into circuits and cause 
erratic VGM operation. 
2.  W arn players to use only one finger at a time. 
Multiple, simultaneous touches confuse the 
controller. 
 Infrequent 
calibration Repeat the Calibrate and Calibrate Test sequence each 
time the VGM is relocated. 
• 
Error messages 
appear on the 
screen. 
• 
VGM is not 
functional. 
• 
Audio is not 
functional. Defined by 
message 1.  Check the assembly (RAM, ROM, battery, 
touchscreen, etc.) identified in the error message. 
2.  If errors seem to occur at random, try to determine 
what conditions occur with the appearance of the 
message (i.e., time of day, when other equipment 
is turned off or on, when room temperature is 
elevated, when certain players are at the VGM, 
periods of low or high humidity, etc.). 
3.  Call your authorized distributor for help with 
unresolved screen messages. 
• 
“Security Key Error” 
message Security failure  1.  Check to see if security key is missing or incorrectly 
installed on CPU Board Assembly. 
2.  Confirm that security key version matches software 
version.