Disassembly - JVC AV-20RM4SE Service Manual

3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE REAR COVER
(1) Unplug the power cord.
(2) Remove the 6 screws [A].
(3) Withdraw the REAR COVER toward you.
3.1.2 REMOVING THE MAIN PWB
• Remove the REAR COVER.
(1) Slightly raise the both sides of the MAIN PWB by hand and
withdraw the MAIN PWB backward.
(If necessary, take off the wire clamp, connectors etc.)
3.1.3 REMOVING THE SPEAKER
• Remove the REAR COVER.
(1) Remove the 4 screws [B].
(2) Remove the speaker toward you.
3.1.4 REMOVING THE FRONT AV JACK PWB
• Remove the REAR COVER.
• Remove the MAIN PWB.
(1) Remove the 2 screws [C].
(2) Remove the FRONT AV JACK PWB.
3.1.5 REMOVING THE HEADPHONE JACK PWB
• Remove the REAR COVER.
• Remove the MAIN PWB.
(1) Remove the 1 screw [D].
(2) Remove the HEADPHONE JACK PWB.
1-6 (No.YA080)
SECTION 3

DISASSEMBLY

3.1.6 CHECKING THE PW BOARD
• To check the back side of the PW Board.
(1) Pull out the PW Board. (Refer to REMOVING THE MAIN
PWB).
(2) Erect the PW Board vertically so that you can easily check
the back side of the PWB.
CAUTION:
• When erecting the PW Board, 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.
3.1.7 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.