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|
| TROUBLESHOOTING & REPAIR |
DC BUSS POWER SUPPLY PC BOARD TEST(CONTINUED)
FIGURE F.5 – DC BUSS POWER SUPPLY PC BOARD
P46 |
| P47 |
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| ||
1 | 2 | 1 | 2 | 3 | 4 | P46 |
P47
3 | 4 | 5 | 6 | 7 | 8 |
DC BUSS
POWER
SUPPLY
PC BOARD
AMPS |
|
|
A |
|
|
|
| VOL |
LINCOLN |
| TS |
V |
| |
ELECTRIC |
|
|
MULTI- |
|
|
WELD | 350 | |
|
| |
INPUT |
|
|
CHOPPER |
|
|
TECHNOLOGY |
|
|
WORK |
| ELECTRODE |
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TEST PROCEDURE
1.Set the CC/CV power switch to OFF.
2.Remove input power to the machine.
WARNING
ELECTRIC SHOCK can kill.
Disconnect input power before removing the case cover and performing tests or making repairs to the machine.
3.Perform the Case Cover Removal proce- dure.
4.Perform the Power Module Capacitor Discharge procedure.
5.Locate the DC Buss Power Supply PC Board and plugs P46 and P47. See Figure F.5.
6.Carefully apply the correct input power to the
7.Set the