Lincoln Electric SVM160-B service manual If you do not read 15VDC on the first reading of encoder

Models: SVM160-B

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F-28

F-28

TROUBLESHOOTING & REPAIR

ENCODER PC BOARD TEST (continued)

VOLT/TRIM ENCODER #1

FROM LEAD

TO LEAD

EXPECTED VOLTAGE

ACTION

 

 

 

 

 

 

 

If you do not read 15VDC on the first reading of encoder

855

3243

15 VDC

#1 or #2 then check lead connections. If lead connec-

tions check OK, then Feeder Board may be faulty,

5J85

3J82

 

 

replace Feeder Board.

 

 

 

8511

3243

0 OR 15 VDC

As you turn the encoder #1 or #2 slowly you should see

11J85

3J82

 

your meter go from 0 to 15, 0 to 15 as you turn the

 

 

 

encoder. If not, check the lead connections. If the lead

858

3243

0 OR 15 VDC

connection check OK then, change the encoder.

8J85

3J82

 

 

 

 

 

 

 

 

 

 

WMF/AMPS ENCODER #2

 

 

 

 

 

 

 

 

 

 

FROM LEAD

TO LEAD

EXPECTED VOLTAGE

ACTION

 

 

 

 

 

 

 

If you do not read 15VDC on the first reading of encoder

859

3243

15 VDC

#1 or #2 then check lead connections. If lead connec-

tions check OK, then Feeder Board may be faulty,

9J85

3J82

 

 

replace Feeder Board.

 

 

 

857

3243

0 OR 15 VDC

As you turn the encoder #1 or #2 slowly you should see

7J85

3J82

 

your meter go from 0 to 15, 0 to 15 as you turn the

 

 

 

encoder. If not, check the lead connections. If the lead

 

 

 

connection check OK then, change the encoder.

 

 

 

 

POWER MIG 300

Page 72
Image 72
Lincoln Electric SVM160-B service manual If you do not read 15VDC on the first reading of encoder