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Removal and Installation Procedures
AWG2005 Service Manual
6Ć45
Circuit Boards
This procedure describes how to remove these circuit boards:
H A6 CPU Board
H A2 AWG Board
H A11 D/A Board
H A1 Clock Board
H For Option 02: A2 AWG Board and A11 D/A Board
H For Option 04: A25 Digital Data Out Board
H For Option 05: A31 Clock Sweep Board
H For Option 09: A7 Floating Point Processor Board
1. Assemble equipment and locate modules to be removed: No tools are
needed; however, the maintenance kit includes an ejector that is useful
in removing circuit boards from the chassis. Locate the modules to be
removed in the locator diagram, Internal Modules, in Figure 6Ć4.
2. Remove the rear shield cover: Do the procedure, Rear Shield Cover,on
page 6Ć35.
3. Orient instrument: Set the AWG2005 with the left side down on the work
surface and the bottom facing you.
4. Remove board support: Remove the board support upward while pushĆ
ing its hook to the inside.
5. Remove A6 CPU board: This circuit board is installed in the second slot
from the top.
CAUTION
To avoid 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.
a. Disconnect the ribbon interconnect cable at J50 and J64 on the
A6ĂCPU board (see Figure 6Ć21).