Troubleshooting & repair, Warning – Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B User Manual
Page 184
F-124
F-124
INTERNAL REMOTE CONTROL TEST
(continued)
FIGURE F.45 - DISPLAY BOARD PLUG LOCATIONS
J17
J16
J15
J14 J13 J12 J11
J10
TROUBLESHOOTING & REPAIR
TEST PROCEDURE
1. Remove main input supply power to the
machine.
2. With the 3/8" nut driver, remove the 4
screws that hold the handle to the machine.
3. Remove the rubber gasket (cover seal) from
the lift bail.
4. With the 5/16" nut driver, remove the sheet
metal screws from the case top.
5. With the 5/16" nut driver, remove the
screws holding the right and left case sides.
Remove the case sides by lifting up and
out.
6. Perform
the
Procedure described earlier in this section
of the manual.
Before continuing with the
test procedure, perform the
capacitor discharge proce-
dure to avoid electric shock.
7. After you have completed the capacitor dis-
charge procedure for all four switch boards,
remove the PC board cover. Use the 5/16"
nut driver.
8. Remove the 5 leads (3 heavy and 2 small)
T1, T2, T3 from main input contactor CR1.
This is a safety precaution. It prevents high
voltage from being put on the machine dur-
ing the test. Wrap tape around the lead
ends to insulate them and prevent them
from touching.
9. Remove plug J30 from the protection
board. See Figure F.1 for location of the
board and plug J30.
POWER WAVE 450
WARNING