Agilent Technologies 54835A, 45A, 46A manual To remove and replace the backlight inverter board

Chapter 6: Replacing Assemblies

To remove and replace the backlight inverter board

	To remove and replace the backlight inverter board
	Use this procedure to remove and replace the backlight inverter board. When necessary, refer
	to other removal procedures.
WARNING	SHOCK HAZARD!
	The backlight inverter assembly, which is mounted at the front corner of the instrument near
	the flat-panel display, operates at high voltages from 300-1 kV acrms. DO NOT handle this
	assembly while it is in operation.

1Disconnect the power cable and remove the cover.

2Disconnect the two backlight cables from the top and bottom of the backlight inverter board.

You can either stand the chassis on end or turn it over to gain access to both cables.

3Disconnect the backlight primary cable W17 from the side of the backlight inverter board.

4Remove the 2 Torx T10 screws that secure the backlight inverter board to the chassis.

5 Lift the backlight inverter board out through the top of the chassis.

6 To replace the backlight inverter board, reverse the assembly procedure.

Figure 6-8

Removing the Backlight Inverter Board

To remove and replace the front panel assembly

Use these steps to remove and replace the front panel assembly. When necessary, refer to other removal procedures.

1Disconnect the power cable and remove the cover.

2Remove the Quick-Probe assembly and Mylar flex cable W13.

3Remove the hex nuts that secure the BNC connectors to the front panel.

Use a 9/16” nut-driver to remove the hex nuts.

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