Troubleshooting & repair, Rf by-pass board resistance test (continued) – Lincoln Electric COMMANDER SVM145-B User Manual

Page 101

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TROUBLESHOOTING & REPAIR

F-45

F-45

COMMANDER 300

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RF BY-PASS BOARD RESISTANCE TEST

(continued)

FIGURE F.19 – RF BY-PASS BOARD

J61

J62

J60

ARA

4.

Locate, label, and remove the three plugs
from the RF By-Pass board. See Figure 19.

5.

Using the phillips head screwdriver, remove
the three mounting screws from the board.

NOTE: Take note of the screw and washer place-
ment for reassembly.

6.

Using the ohmmeter, check for the correct
resistance readings per Table F.1. If any of
the checks are not correct, the RF By-Pass
Board may be faulty.

7.

Replace the board making sure the mounting
screws and washers are in place and tight.

8.

Install the three plugs into the board.

9.

Replace the front control panel.