Agilent Technologies e4418b, e4419b manual Removing the A2 Processor Assembly

Replaceable Parts

Assembly and Disassembly Guidelines

Removing the A2 Processor Assembly

1.Remove the A5 daughter and A6 measurement assemblies as described on page 5-12.

2.Move the A2 plastic support bracket to its forward position using the two side levers, unclip the flexi-cable retaining bar on the front panel keypad and front panel LCD cable connectors and disconnect the cable.

3.Disconnect the following cables from the A2 processor assembly:

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power reference semi-rigid

fan connector

power supply connector

4.Turn the power meter upside down and remove the three screws as shown. (When replacing these screws use a 6 lb/in T10 screw driver.)

5.Push the A2 processor assembly towards the front panel to release it from the 50-pin connector. Lift it upwards to remove.

screws

Note	When re-assembling the processor board, ensure the A2 plastic support
	bracket is returned to its locked position.
Note	After replacing a processor board, the Power Reference Frequency and
	Level must be checked. For further information refer to “Performance
	Tests”, on page 2-1.
Note	After replacing a processor board, the display brightness and contrast must
	be adjusted. See “Adjustments”, on page 3-1.
Note	Firmware should be downloaded to the instrument after the processor board
	is replaced. Refer to “Downloading Firmware”, on page 5-7.

5-10 Agilent E4418B/E4419B Service Guide