Pc Board Led Definitions - Lincoln Electric NA-5N Service Manual

F-36
LED Number
1A
1B
1C
1D
1E
1F
7A
7B
7C
7D
7E
7G
7H
7J
7K
LED LIGHT LOCATIONS
NA-5 L O I G C
LED 7E
LED 7B
LED 7C
LED 7D
LED7A
LED 7K LED 7G LED 7H
TROUBLESHOOTING & REPAIR
PC BOARD LED (LIGHT) DEFINITIONS
Functions Indicated By PC Board LEDS
+15VDC Analog Supply Present
-10VDC Analog Supply Present
Down Field Voltage Applied
Up Field Voltage Applied
Armature Voltage Applied
115VDC Relay Supply Present
+15VDC Logic Supply Present
"Start" Switch Pressed
"Stop" Switch Pressed
Welding Current Present
Signal to Apply Down Field Voltage
Signal to Operate Flux or Water Solenoid
Signal to Operate Travel Circuit
"Inch Down" Switch Pressed
Signal to Operate Power Source Output Contactor
LED 7J
NA-5
LED LIGHT LOCATIONS
LED 1E
LED 1C
LED 1D
LED 1B
LED 1F
NA-5 POWER
F-36
LED 1A