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Removal and Installation Procedures
AWG2005 Service Manual
6Ć49
A5 Backplane Board
CAUTION
To avoid the permanent loss of waveform files, note the following: A
lithium battery which maintains the nonvolatile memory during
powerĆoff time is located on the A5 Backplane board. The nonvolaĆ
tile memory that contains the waveforms and their setup parameter
data is located on the A6 CPU board. Removing either board will
cause the waveform files, sequence files, and autostep files in
nonvolatile memory to be permanently lost. Before removing either
the A6 CPU board or the A5 Backplane board, save the waveform
files, sequence files, and autostep files in the instrument nonvolatile
memory to a floppy disk. Then, after reinstalling the board(s),
reload the files into nonvolatile memory.
1. Assemble equipment and locate modules to be removed:
a. You will need a screwdriver with a size TĆ15 Torx tip and a
1
/
4
Ćinch
nut driver to do this procedure.
b. Locate the modules to be removed in the locator diagram, Internal
Modules, in Figure 6Ć4.
2. Orient instrument: Set the AWG2005 with the left side down on the work
surface and the top facing you.
3. Remove A23 Analog board or A3 Analog board (Option 02): Do the
procedure, A23 Analog board or A3 Analog board, on page 6Ć29.
4. Remove all circuit boards: Do the procedure, Circuit Boards, on page
6Ć45.
5. Remove A5 Backplane board:
a. Remove the five screws and a nut securing the shield cover (see
Figure 6Ć22).
b. Grasp the shield cover, and take it out.
c. Disconnect the ribbon interconnect cables at J8 on the A5 BackĆ
plane board (see Figure 6Ć22).
d. Disconnect the flat cable at J6 on the A5 Backplane board.
e. Remove the remaining four screws securing the A5 Backplane
board to the chassis.
f. Lift the A5 Backplane board sideways, and then take it out.
6. Reinstallation:
a. Install the A5 Backplane board: Do substeps 5a-5f in reverse order
to install the board.