JVC AV-28H5BU Service Manual page 11

3.2 DISASSEMBLY PROCEDURE [H50/H57 series]
3.2.1 REMOVING THE REAR COVER
(1) Remove the 13 screws [A], then withdraw the REAR
COVER toward you.
3.2.2 REMOVING THE SIDE CONTROL JACK ASS'Y
• Remove the REAR COVER.
(1) Remove the 1 screw [B], then remove the SIDE
CONTROL JACK ASS'Y.
3.2.3 REMOVING THE SIDE CONTROL PWB
• Remove the REAR COVER.
• Remove the SIDE CONTROL JACK ASS'Y.
(1) Remove the 2 claws, then remove the SIDE CONTROL
PWB.
3.2.4 REMOVING THE CHASSIS BASE
• Remove the REAR COVER.
(1) Slightly raise the both sides of the chassis by hand and
remove the 2 claws under the both sides of the CHASSIS
BASE from the front cabinet.
(2) Withdraw the CHASSIS backward.
(If necessary, take off the wire clamp, connectors etc.)
3.2.5 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 3 screws [C].
(2) Remove the 2 claws under the CHASSIS, then remove the
AV TERMINAL BOARD.
3.2.6 REMOVING THE SPEAKER
• Remove the REAR COVER.
• Remove the SIDE CONTROL JACK ASS'Y.
• Remove the CHASSIS BASE.
(1) Remove the 2 screws [D], then remove the SPEAKER with
SPEAKER ADAPTER.
(2) Remove the 4 screws [E], then remove the SPEAKER from
SPEAKER ADAPTER.
(3) Follow the same steps when removing the other hand
SPEAKER.
3.2.7 CHECKING THE PW BOARD
• To check the back side of the PW Board.
(1) Pull out the CHASSIS BASE. (Refer to REMOVING THE
CHASSIS BASE).
(2) Erect the CHASSIS BASE vertically with the HVT side
facing up so that you can easily check the back side of the
PW board.
CAUTION:
• When erecting the CHASSIS BASE, be careful so that there
will be no contacting with other PW Board.
• Before turning on power, make sure that the wire connector
is properly connected.
• When conducting a check with power supplied, be sure to
confirm that the CRT EARTH WIRE (BRAIDED ASS'Y) is
connected to the CRT SOCKET PWB.
3.2.8 WIRE CLAMPING AND CABLE TYING
(1) Be sure to clamp the wire.
(2) Never remove the cable tie used for tying the wires
together. Should it be inadvertently removed, be sure to tie
the wires with a new cable tie.
(No.YA263)1-11