Front Panel Disassembly; A1 0 Assembly Removal - Agilent Technologies 4284A Service Manual

3-8-4. FRONT PANEL DISASSEMBLY

This paragraph describes how to remove the front panel assembly from the 4284A. I n order
to remove the A9, A1 0 , A1 3 , A90 , or A9 1 assembly which are shown in Figu re 3-2, first d is­
assemble the front panel assembly.
1 . Remove the top trim from the front frame.
2 . Remove the two front feet from the bottom cover.
3 . Remove the three screws from the bottom of the front frame.
4. Remove the three screws from the top of the front frame.
5. Carefully remove the 4284A's front panel assembly.
3-8-5. A9 OR A90 ASSEM BLY REMOVAL
First remove the front panel assem bly from the 4284A as described in paragraph 3-8-4.
1 . Loosen the two hex set screws on the CONTRAST knob and remove it.
2. Disconnect the flat cable assembly that interconnects the motherboard to the
A90 assembly.
3. Disconnect the 3 and 1 3-pin cables from the A90 assembly.
4. Remove the seven n uts that secure the A9 assembly.
5. Remove the fou r screws that secure the A90 assembly to the A9 assembly, and
slide the A90 assembly out.
6. Disconnect the 3-pin cable from the A9 assembly.
7 . Disconnect the wires that connect the A90 and A9 assemblies.

3-8-6. A1 0 ASSEMBLY REMOVAL

First remove the front panel assembly from the 4284A as described in paragraph 3-8-4.
1 . Disconnect the flatcable assem bly that is connected to the motherboard from the
A 1 0 assembly.
2 . Remove the two screws, nuts, and washers that secure the A 1 0 assembly to the
M EM ORY card bezel, and remove the A1 0 board.
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