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TROUBLESHOOTING & REPAIR
F-21 F-21
V160-S & -T
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VOLTAGE CHECKS ON JP1 INVERTER BOARD
CHECK FOR 320 VDC
REFER PIN 2 AS GROUND
PIN 3 = 15 VDC
PIN 7 = 15 VDC = INVERTER OFF
PIN 7 = 0 VDC = INVERTER ON
PIN 3
PIN 7
PIN 2
MAIN IGBT INVERTER BOARD V160-S/T
“WELDING LOGIC AND INVERTER” SECTION TEST
(continued)
FIGURE F.10 MAIN IGBT INVERTER BOARD LOCATION