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TROUBLESHOOTING & REPAIR | ||
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PROTECTION BOARD OUTPUT TEST(cont.)
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TEST PROCEDURE
1.TURN POWER SWITCH OFF
2.Remove sheetmetal wraparound.
3.Perform Input Filter Capacitor Discharge procedure detailed in Maintenance section
4.Remove the two through bolts that attach the Power/Driver Board bracket to Protection/Input Rectifier bracket. Each through bolt also supports a resistor.
5.Slide the through bolts toward the Control Panel until the brackets are disconnected and resistors are loose. Be careful when loosening these through bolts, as they secure the two resistors. As the through bolts are removed, carefully place the resis- tors and the connected wires to the side
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FIGURE F.4 — REMOVING THROUGH BOLTS & MOUNTING SCREWS
INPUT RECTIFIER
PROTECTION BOARD/
INPUT RECTIFIER
MOUNTING SCREW
6. Remove the two screws attaching the Protection | 7. Tilt the top of the Protection Board bracket toward |
Board/Input Rectifier bracket to main assembly | the Power Panel to gain access to test points on the |
bracket. | Protection Board. |
