Agilent Technologies e4418b, e4419b manual Removing the A2 Processor Assembly, n n n

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