TROUBLESHOOTING & REPAIR
F-24
F-24
V160-S & -T
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1
1
1
1
1
1
2
2
2
2
2
2
D11 CHECK FOR SHORT
CHECK
BETWEEN POINTS
1 & 2
FOR SHORTS
REVISION NUMBER
D17
CHECK FOR SHORT
27 Ohms
NORMAL
R17 PTC
36 Ohms
D19
CHECK FOR SHORT
27 Ohms
NORMAL
INVERTER PCB
OUTPUT DIODES
1K BOTH WAYS
CAN BE CHECKED AT
OUTPUT STUDS
ALSO
VOLTAGE CHECKS ON JP1 INVERTER BOARD:
REFER PIN 2 AS GROUND
PIN 3 = 15 VDC
PIN 7 = O VDC (INVERTER ON)
PIN 7 = 15 VDC (INVERTER OFF)
JP1:9 TO JP1:2 C FB (Current feedback from shunt) (Voltage signal between 0-10V = 0-600 Example 100A=1.66V)
JP1:10 to JP1:2 V FB (Voltage feedback) (Voltage signal bewteen 0-10V = 0-60 Example 7.1V = 42v)
PIN 3
PIN 7
PIN 2
MAIN IGBT INVERTER BOARD V160-S/T
“WELDING LOGIC AND INVERTER” SECTION TEST
(continued)
FIGURE F.13 MAIN IGBT INVERTER BOARD LOCATION
