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Section 60 - Place Diagnostics in Display Digits Test
Master Display Troubleshooting Chart
NO DISPLAY
1. Check - 300VDC, -100VDC,
+
lOOVDC
&
fuse 3Fl on Power Supply
2. Check connectors 3JS, 417,
4JS, 113, 11S, 116, 117
3. Check for
+
l00VDC and - l00VDC
on connector 417 - replace
Power Supply Board if
voltage incorrect
4. Replace Master Display Board.
INCORRECT DISPLAY
1. Check - 300VDC,
+
l00VDC - l00VDC
at 417
2. Check for broken or shorted wires
on 4J5, 416, 115, 116, 117
3. Replace Master Display Board
Section 6E - Place Diagnostics in Display Digits Test
Player Display Troubleshooting Chart
1 PLAYER DISPLAY
INCORRECT
IOFF
1. Check correct location of
connector from Master
Display Board.
2. Replace Player Display - if
still incorrect, replace
Master Display Board.
2-4 PLA YER DISPLAYS INCORRECT
I
OFF
1. Check correct location of connectors
from Master Display Board
2. Check voltage - 300VDC,
+
l00VDC
and - l00VDC on connector 417
3. If voltages are correct - replace
Master Display Board.
USE
EXTREME CAUTION WHEN MEASURING HIGH VOLTAGES!
!!
Section 6F- Game Operation Troubleshooting
Put game in game over mode. Manually play game
to verify problem. Go to diagnostic mode and read
out functions by stepping through test 04. Review
the game adjustments to verify that they are what is
desired. Review game operation (Section 2).
Section 6G -
Troubleshooting an inoperative machine or
a machine that blows fuses.
Machine Inoperative
1. Remove plug from wall outlet and measure wall voltage.
2. With machine unplug~ed, check the line fuse, line
cord, and
ONIOFF
switch with an Ohmmeter for con-
tinuity.
3. Check for any loose connections on line filter,
ONI
OFF switch.
4. Check that power connector to transformer is securely
connected.
S. Check all fuses on power supply board.
6. Plug machine in, turn on and check voltage on power
supply board fuses.
Machine Blows Fuse
1. Wall fuse or circuit breaker blows -
a) Disconnect wall plug.
b) Disconnect connector from line filter to transformer.
c) Check line cord with Ohmmeter for shorts.
d) Check varistor and line filter for shorts.
e) Plug cord in wall and see if wall fuse still blows - if
yes, disconnect whatever else is on same wall plug cir-
cuit and recheck items (c) and (d) above.
2. Machine fuse blows -
a) Check for correct fuse rating.
b) Check varistor, line filter, line cord for shorts.
c) Disconnect connector from line filter to transfor-
mer and try another fuse.
d) If fuse still blows, do item a, b, c again.
e) If fuse does not blow, disconnect 3PI and 3P2
plugs from the p'0wer supply board and reconnect
plug from line filter to transformer.
f) If fuse blows, check transformer and both lamps
and solenoid rectifiers for shorts.
g) If fuse does not blow, plug in 3P2 and 3Pl then
try again. If fuse now blows, disconnect 3P3, 3P4,
3PS, 3P6, and try another fuse. If fuse still blows
replace POWER SUPPLY.
h) If fuse doesn't blow, hook up 3P3, 3P4, 3PS, and
3P6 one at a time. If fuse blows when anyone is
plugged in, look for burned out solenoid, dead
shorts, etc.