Lincoln Electric INVERTEC SVM158-A Service Manual page 77

F-27
CHECK POINT
LOCATION DESCRIPTION
POWER PC CHECK 40VDC
BOARD SUPPLY FROM
CONNECTOR RECT. BRIDGE
PLUG J41 TO POWER BD.
POWER PC CHECK +15VDC
BOARD SUPPLY FROM
CONNECTOR
PLUG J42
POWER PC CHECK +5VDC
BOARD SUPPLY FROM
CONNECTOR
PLUG J42
POWER PC CHECK -15VDC
BOARD SUPPLY FROM
CONNECTOR
PLUG J42
POWER PC
CHECK +5VDC
BOARD
CONNECTOR
FROM POWER
PLUG J43
CHECK +5VDC
POWER PC
BOARD
SUPPLY FROM
CONNECTOR
PLUG J43
POWER PC
CHECK +15VDC
BOARD
CONNECTOR
FROM POWER
PLUG J43
TROUBLESHOOTING & REPAIR
POWER BOARD TEST (CONTINUED)
Table F.3 Power Board Voltage Checks
TEST CONNECTOR
PLUG PIN NO.
65
POWER PC
BOARD
POWER PC
BOARD
408
POWER PC
BOARD
401
"SPI" SUPPLY
PC BOARD
"RS232"
POWER PC
BOARD
401
"SPI" SUPPLY
PC BOARD
402
V350-PRO
LEAD NO.
OR IDENTITY
2(+)
1(-)
65 (+)
66 (-)
66
1(+)
5(-)
412 (+)
410
410 (-)
412
3(+)
5(-)
410 408 (+)
410 (-)
2(+)
5(-)
411 (+)
410
410 (-)
411
3(+)
12(-)
403 (+)
401 (-)
403
4(+)
9(-)
405
406 (+)
405 (-)
406
6(+)
12(-)
402 (+)
401 (-)
F-27
NORMAL
ACCEPTABLE
VOLTAGE
READING
38-42 VDC
15 VDC
5 VDC
-15 VDC
5 VDC
5 VDC
15 VDC