Troubleshooting & repair, Pc board led (light) definitions, Led number functions indicated by pc board leds – Lincoln Electric NA-5S User Manual
Page 89
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F-36
TROUBLESHOOTING & REPAIR
F-36
LED Number
Functions Indicated By PC Board LEDS
1A
+15VDC Analog Supply Present
1B
-10VDC Analog Supply Present
1C
Down Field Voltage Applied
1D
Up Field Voltage Applied
1E
Armature Voltage Applied
1F
115VDC Relay Supply Present
7A
+15VDC Logic Supply Present
7B
"Start" Switch Pressed
7C
"Stop" Switch Pressed
7D
Welding Current Present
7E
Signal to Apply Down Field Voltage
7G
Signal to Operate Flux or Water Solenoid
7H
Signal to Operate Travel Circuit
7J
"Inch Down" Switch Pressed
7K
Signal to Operate Power Source Output Contactor
PC BOARD LED (LIGHT) DEFINITIONS
NA-5
LED LIGHT LOCATIONS
O I
L
C
G
LED 7B
LED 7C
LED 7D
LED7A
NA-5
LED 7J
LED 7K LED 7G
LED 7H
LED 7E
LED LIGHT LOCATIONS
NA-5 POWER
LED 1F
LED 1B
LED 1D
LED 1C
LED 1E
LED 1A
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