MAINTENANCE
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WARNING
Failure to follow this capacitor discharge proce- dure can result in electric shock.
INPUT FILTER CAPACITOR DISCHARGE PROCEDURE
1.Turn off input power or disconnect input power lines.
2.Remove hex head screws from side and top of machine and remove
3.Be careful not to make contact with the capacitor terminals that are located in the center of the Switch Boards.
4.Obtain a high resistance and high wattage resistor
SHORTING STRAP FOR THIS PROCE- DURE.
5.Locate the two capacitor terminals (large hex head cap screws) shown in Figure D.1.
6.Use safety glasses, electrically insulated gloves and insulated pliers. Hold body of the resistor and connect resistor leads across the two capacitor terminals. Hold resistor in place for 10 seconds. DO NOT TOUCH CAPACITOR TERMINALS WITH YOUR BARE HANDS.
7.Repeat discharge procedure for capaci- tor on other side of machine.
8.Check voltage across terminals of all capacitors with a DC voltmeter. Polarity of capacitor terminals is marked on PC board above terminals. Voltage should be zero. If any voltage remains, repeat this capacitor discharge procedure.
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