Lincoln Electric V155-S - Manual (Page 52)

DC+
DC-
INPUT BOARD
AC2
AC1
JP1
PIN 2
PIN 1
PIN 3 PIN 4
PIN 8
PIN 12
PIN 14
FIGURE F.8 – INPUT BOARD TEST POINTS
INPUT BOARD VOLTAGE TEST (CONTINUED)
PROCEDURE
1. Disconnect power to the INVERTEC® V155-S.
2. Perform the Case Cover Removal Procedure (left
side only).
3. Connect the main 230VAC to the the machine and
switch ON the input switch.
Note: Pay attention to wiring diagram very closely.
When connecting cables from the Input
Board to the Power Switch. You must con-
nect the cables as shown in Figure F.9.
PWR 2(white) to 4 PWR 1(blue) to 1
PWR 4(white) to 5 PWR 3(blue) to 2
4. Using a multimeter, check for 230VAC between AC1
and AC2. See Figure F.8.
5. Check for 320-325VDC between DC+ and DC-
6. Using pin 8,9,15 or 16 of JP1 as a common (-) point:
Check pin 2,4 and 14 for +15VDC.
Check pin 12 for +5VDC.
TROUBLESHOOTING & REPAIR F-20 F-20
INVERTEC® V155-S
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