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SQUARE WAVE TIG 355
F-24 F-24
ARC START TRIGGER CIRCUIT TEST (continued)
TROUBLESHOOTING & REPAIR
FIGURE F.3 – ARC START TRIGGER CIRCUIT
24VAC
3J16
1J16
5J18
8J23
5J23
3J22
6J22
D
E
1J9
3J9
#204
#207
PROTECTION
BOARD
FEED - THRU
BOARD
CONTROL
BOARD
CONTROL
TRANSFORMER
T5
REMOTE
RECEPTACLE
ARC
START
SWITCH
1J18
L11
L13
L3
L6
4.2 ohms
max.
4.2 ohms
max.
4.2 ohms
max.
4.2 ohms
max.