Lincoln Electric IDEALARC SP-255 Service Manual page 80

F-27
WIRE DRIVE MOTOR AND TACHOMETER FEEDBACK TEST
TEST PROCEDURE
NOTE: POLARITY MUST BE OB-
SERVED FOR THESE TESTS.
Test for Correct Wire Drive Motor Arma-
ture Voltage
1. Disconnect main input power to the
machine.
2. Remove the Case Top and Side Pan-
els using a 5/16" nut driver.
3. Locate Plug J5 on the G2801 Control
Board. See Figure F.10.
#515B #515B
(3J5) (3J5)
#206B
(2J5)
#555
(1J5)
FIGURE F.10 - Plug J5 Location on
G2801 PC Control Board.
TROUBLESHOOTING & REPAIR
J2
J7
J4
#541(w)
(13J5)
J5
J6
#539(B)
(12J5)
IDEALARC
SP-255 CONTROL
G2801
J8
J9
J3
® SP-255
F-27