Lincoln Electric RANGER 250 SVM150-A Service Manual page 66

F-16
POWER MODULE CAPACITOR DISCHARGE PROCEDURE (continued)
FIGURE F.2 – POWER MODULE CAPACITOR TERMINAL DISCHARGE
TEST PROCEDURE
1. Turn the engine off.
2. Perform the Case Cover Removal proce-
dure.
NOTE: It is not necessary to remove the gas
cap in order to take the case cover off the
machine. Be sure the gas cap is ON when dis-
charging the power module capacitors.
3. Locate the power module capacitors on the
left side of the inner machine baffle. See
Figure F.2.
TROUBLESHOOTING & REPAIR
SHORT ACROSS
TERMINALS
WITH RESISTOR
POWER
MODULE
CAPACITORS
RANGER 250
4. Using the resistor and jumper leads,
CAREFULLY discharge the capacitor ter-
minals. NEVER USE A SHORTING
STRAP FOR THIS PURPOSE. DO NOT
TOUCH THE TERMINALS WITH YOUR
BARE HANDS. Repeat the procedure for
the second capacitor.
5. Using the volt/ohmmeter, check the voltage
across the capacitor terminals. It should
be zero volts.
F-16