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Sony Tektronix AWG2021 Service Manual
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Removal and Installation Procedures;14; AWG2021 Service Manual To avoid permanent loss of waveform files, note the following: Alithium battery which maintains the nonvolatile memory when power is off islocated on the A5 Backplane board. The nonvolatile memory that contains thewaveforms and their setup parameter data is located on the A6 CPU board.Removing either board will cause the waveform files, sequence files, andautostep files in nonvolatile memory to be permanently lost. Before removingeither the A6 CPU board or the A5 Backplane board, save the waveform files,sequence files, and autostep files in the instrument nonvolatile memory to afloppy disk. Then, after reinstalling the board(s), reload the files into nonvolatilememory.1. Assemble equipment and locate modules to be removed:a. You will need a screwdriver with a size T-15 Torx tip and a flat-bladedscrewdriver to do this procedure.b. Locate the modules to be removed in the locator diagram, InternalModules, in Figure 6–4.2. Orient instrument: Set the AWG2021 with the left side down on the worksurface and the top facing you.3. Remove all boards: Do the procedure, Circuit Boards, on page 6–42.4. Remove A5 Backplane board:a. Remove the five screws and a nut securing the shield cover (seeFigure 6–23).b. Grasp the shield cover, and take it out.c. Disconnect the ribbon interconnect cables at J100 on the A4 Powerboard and at J410 on the A3 Analog board (see Figure 6–12 andFigure 6–13).d. Disconnect the ribbon interconnect cable at J10 on the A5 Backplaneboard.e. Disconnect the flat cable at J6 on the A5 Backplane board.f. Remove the remaining four screws securing the A5 Backplane board tothe chassis.g. Using a flat-bladed screwdriver, release the four hooks of the circuitboard support that holds the A5 Backplane board, lift the A5 Backplaneboard sideways, and then take it out.7 A. A |
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