3. Remove all connectors.

WARNING: Exercise extreme caution; the chassis weighs up to 40.3 kg (88.6 lbs.)

4.Remove three screws at the top of the card. Slide the card approximately an inch away from the front panel and raise it up out of its bottom track.

5.To install a replacement card, reverse this procedure. Note the location of the connectors in Figure 46 on page 115 and reinstall as shown.

Diode Test

An ohmmeter can be used to check for a shorted or open capacitor. (Isolate the component before making continuity tests.)

WARNING: Disconnect all power sources before servicing high voltage components.

Ohmmeters having less than a 6V battery can give erroneous indications of high resistance in both directions when testing these high voltage diodes.

1.With an insulated screwdriver, short the capacitor terminals to each other to assure discharge of capacitor voltage.

2.Disconnect the wiring from the terminals of the rectifier assembly.

3.Set the ohmmeter to highest resistance setting and measure resistance between the AC terminals and both the - (minus) terminal and the GND terminal.

4.Measure the resistance between diode terminals with meter leads reversed. Readings should be 50,000 ohms or less one way and infinite with leads reversed.

114F300S/F300SQ Ultraviolet Lamp System