Troubleshooting And Repair - Lincoln Electric POWER WAVE SVM135-B Service Manual

F-45
CHECK POINT
LOCATION
POWER PC CHECK 65 VDC
BOARD SUPPLY FROM
CONNECTOR POWER BOARD
PLUG J32
POWER PC
BOARD
CONNECTOR FROM POWER
PLUG J31
POWER PC CHECK +5 VDC
BOARD SUPPLY FROM
CONNECTOR
PLUG J31
POWER PC CHECK -15 VDC
BOARD SUPPLY FROM
CONNECTOR
PLUG J31
POWER PC CHECK +5 VDC
BOARD "CAN" SUPPLY
CONNECTOR FROM POWER
PLUG J31
POWER PC CHECK +5 VDC
BOARD
CONNECTOR SUPPLY FROM
PLUG J31
POWER PC
BOARD SPADE
TERMINALS FEEDER SUPPLY
FROM POWER PC

TROUBLESHOOTING AND REPAIR

POWER BOARD TEST (continued)
TABLE F.4 — POWER BOARD VOLTAGE CHECKS.
TEST CONNECTOR
DESCRIPTION PLUG PIN NO.
RECTIFIER
BRIDGE
CHECK +15
VDC SUPPLY
PC BOARD
POWER PC
BOARD
221
POWER PC
BOARD
PC BOARD
"RS232"
POWER PC
BOARD
CHECK +40 #50 TERMINAL
VDC WIRE
#51 TERMINAL
BOARD
POWER WAVE 455/POWER FEED 10
LEAD NO.
OR
IDENTITY
1 & 2(+) POS(+)
4 & 5(-) NEG(-)
POS
NEG
2(+) 225(+)
4(-) 222(-)
225 222
7(+) 221(+)
4(-) 222(-)
222
4(+) 222(+)
3(-) 223(-)
223 222
11(+) 274(+)
12(-) 273(-)
274 273
6(+) 226(+)
5(-) 228(-)
228 226
WHITE (+)
TO BLACK (-)
F-45
NORMAL
ACCEPTABLE
VOLTAGE
READING
73 VDC
15 VDC
5 VDC
15 VDC
5 VDC
5 VDC
40 VDC