Disassembly and Repair 5
Keysight 34980A Service Guide 123
Backplane Removal
1 Remove the front panel (see the procedure on page 120) and the DMM (see
the procedure on page 122).
2 Use a 3/16” nut driver to remove the rear panel Analog Bus DB9 connector.
Unclip the connector cable from the mainframe.
3 Remove the five T20 Torx screws holding the backplane assembly to the
chassis and lift the printed circuit assembly out.