Basic HTML Version
486
TROUBLESHOOTING CHARTS
Tables 5 through 14 are used in conjunction with the
diagnostic test described in Section 5 to isolate problems and
repair faulty games .•.• or specific problems with:
Lamps-See Table 5
Switches-See Table 6
Solenoids-See Table 7
Master Display-See Table 8
Player Display-See Table 9
Game Operation-See Table 10
Game does not operate or blows fuses-See Table
II
Losing memory-See Table 12
No response to CPU Self-Tests or intermittent operation
See Table 13
Sound-See Table 14
Table
5.
Lamps
(Place Diagnostics in Test 01)
1 LAMP
4-8 LAMPS
ALL LAMPS
GENERAL ILLUMI.
Always OFF
Always OFF
Always OFF
Always ON
I. Check Bulb
I.
Check wiring (broken
I.
Check fuse 3F3 on Power
Normal Condition
2. Check Diode (Observe
wires)
Supply
Always OFF
Polarity)
2. Check Connectors (215,
2. Check for +18 VDC on
3. Check wiring (broken
2J7)
fuse 3F3 to ground
I. Check Fuse on Fuse Card
wires)
3. Replace Driver Board
3. Check Connector 3J4
2. Check for +6.3 VAC
4. Check Connector
3. Check Connectors (313)
Glows DIM
Glows DIM
8P2j8J2
4. Check Connectors 9PI
1. Check Bulb (correct
1.
Check wiring (broken
5. Check wiring (broken or
and 8P2/8J2
#bulb)
wires)
shorts)
5. Check wiring (broken or
2. Check Diode (Observe
2. Check Diode
6. Replace Driver Board
short)
Polarity)
3. Check Connectors (215,
Glows DIM
3. Check wiring (shorted
217)
Glows DIM
I. Check line voltage
wires)
4. Replace Driver Board
I. Check line voltage
Always ON
Always ON
2. Check for +18 VDC on
1.
Check Diode (Observe
1.
Check wiring (shorted
fuse 3F3 to ground
Polarity)
wires)
2. Check wiring (shorted
2. Check Diodes
wires)
3. Check Connectors (215,
217)
4. Replace Driver Board
All lamps are N44 or equivalent
All diodes are IN4001 or equivalent
Table
6.
Switches
(Place Diagnostics in Test 03)
1
SWITCH
4-8 SWITCHES
ALL SWITCHES
Always Actuated
Always Actuated
Switch Closure Displays
I. Check adjustments
1.
Check contacts
1.
Check adjustments
Multiple Switch Numbers
2. Check Connectors 212.
2. Check shorted wires
2. Check shorted wires on
1.
Check adjustments
213, are not exchanged
Never Actuates
playfield or to 2J2, 2J3
2. Check shorted wires on
3. Replace Driver Board
3. Replace Driver Board
playfield or to 212, 213
1.
Check adjustment
3. Replace Driver Board
2. Check broken wires
Never Actuated
3. Check for open diode by 1. Check adjustment
Switch Displays Incorrect
jumpering across diode
2. Check broken wires on
No.
and actuating.
playfield or 212, 2J3
1. Check correct switch
3. Check plug
8Plj8Jl
for
chan for game and check
broken wires or pushed
adjustment
out pins
2. Incorrect wiring on play-
4. Replace Driver Board
field 212, 213, or 8Pl/8J1
3. Check Connector keying
23