Agilent Technologies 5517B, User Manual

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70 Agilent 5517B/BL/C/D/DL/FL User’s Guide
7
Service
To remove the A3 Controller/Reference Board
1
Remove the cover (MP10).
See “To remove the Front Panel and the Cover" on page 69
2
Remove the screws and flat washers that attach the A3
Controller/Reference Board to the shield (MP2) by removing the four
screws (H2) and flat washers (H6).
3
Using TORX #8 screwdriver, remove the voltage regulator’s screw (H5)
and washer (H7).
4
Unplug the A3 board from the A4 Sampler Board and the A1 Connector
Board.
To remove the A1 Connector Board
1
Remove the cover (MP10).
See “To remove the Front Panel and the Cover" on page 69
2
Remove the A3 Controller Reference Board.
See “To remove the A3 Controller/Reference Board" on page 70.
3
Unplug the A5 Laser Tube Assembly wires from the two- pin connector
on the A1 Connector Board, and the A2 Power Supply wires from the
three- pin connector on the A1 board.
4
Using the TORX #15 screwdriver, remove two rear- panel crews (H9)
that attach the rear panel (MP3) to the laser base.
5
At the top of the rear panel (MP3), remove the two screws (H10) and
washers (H6) that attach to the A1 Connector Board.
6
Using TORX #8 screwdriver, remove the two screws (H11) that attach
A1 Connector Board to the rear panel (MP3).
NOTE
The old controller board has two regulators.
NOTE
When reinstalling the board, make sure the thermo insulator pad (MP9) is
installed under the regulator. (On the old controller board the smaller
screw and washer is used on the right-side regulator.) Make sure the
connector pins that interface with the A4 Sampler Board.