Lincoln Electric LN-9 SVM127-A Service Manual page 107

F-49
GENERAL POWER SUPPLY TESTS (continued)
CHECKPOINT
LOCATION
CONTROL P.C.
BOARD
CONNECTOR
PLUG
CONTROL P.C.
BOARD
CONNECTOR
PLUG
VOLTAGE P.C.
BOARD UPPER
CONNECTOR
PLUG NEXT TO
"F" AND "S"
PINS
VOLTAGE P.C.
BOARD UPPER
CONNECTOR
PLUG NEXT TO
"F" AND "S"
PINS
VOLTAGE P.C.
BOARD LOWER
CONNECTOR
PLUG NEXT TO
PLASTIC
COVERED
RELAY
TROUBLESHOOTING & REPAIR
GENERAL POWER SUPPLY CHECKS
TEST CONNECTOR
DESCRIPTION PLUG PIN NO.
CHECK
+15VDC
SUPPLY FROM
POWER
BOARD TO
CONTROL
BOARD
CHECK - 10 VDC
SUPPLY FROM
POWER
BOARD TO
CONTROL
BOARD
CHECK
+ 15 VDC
SUPPLY FROM
POWER
BOARD TO
VOLTAGE
BOARD
CHECK - 10 VDC
SUPPLY FROM
POWER
BOARD TO
VOLTAGE
BOARD
LN-9 Wire Feeder
LEAD NO.
525
525(+)
510
510(-)
10(+)
9(-)
500
500(-)
510(+)
510
14(-)
9(+)
525
525(+)
510 510(-)
4(+)
6(-)
510(+)
510
6(+)
500
500(-)
4(-)
F-49
NORMAL
ACCEPTABLE
VOLTAGE
READING
13.5 - 15.5 VDC
9.2 - 10.8 VDC
13.5 - 15.5 VDC
9.2 - 10.8 VDC