KV-29FQ76E - Sony TV Service Manual (repair manual). Page 16

To remove the G Board first remove the PFC bracket by
removing the two fixing screws (one on each side of the
bracket) and lifting away from the G board.
Remove the screw from the centre of the G board, release
the clips circled and ease the board gently away from the
support bracket.

To place the chassis in the service position, remove the D2
bracket (see 2-8.) and  locate on the outer edge of the main
bracket as shown. Insert the main bracket firmly into the
T-slot located on the left corner of the beznet as indicated
(see inset). To gain access to the underside of the boards
follow the instructions on page 20. [Removal and
Replacement of the main bracket bottom plates].

To remove the D2 board remove the two screws circled,
release the clips circled and ease the board gently away from
the support bracket.

To remove the D1 board first remove the D2 bracket by
removing the two screws (one on each side of the bracket)
and releasing the four clips (two on each side of the bracket).
The D1 board can then be removed using the same method as
the G board.