JVC AV-29L6SU, AV-29L6BU, Service Manual

Page: 7 / 60

(No.YA366)1-7
SECTION 3
DISASSEMBLY
3.1 DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE REAR COVER
(1) Unplug the power cord.
(2) Remove the 9 screws
[A] and 5 screws [B] .
(3) Withdraw the REAR COVER toward you.
3.1.2 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER
(1) Remove the 2 screws [C] .
(2) Remove the ANTENNA TERMINAL.
(3) Withdraw the AV TERMINAL BOARD toward you.
3.1.3 REMOVING THE CHASSIS
• 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
from the front cabinet.
(2) Withdraw the CHASSIS backward.(If necessary, take off
the wire clamp, connectors etc.)
3.1.4 REMOVING THE POWER SW PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 2 screws [D] .
(2) Remove the CONTROL BASE with the POWER SW PWB
and FRONT CONTROL PWB.
(3) Remove the POWER SW PWB from the CONTROL BASE.
3.1.5 REMOVING THE FRONT CONTROL PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 2 screws [D] .
(2) Remove the CONTROL BASE with the POWER SW PWB
and FRONT CONTROL PWB.
(3) Remove the 2 screws [E] .
(4) Remove the FRONT CONTROL PWB from the CONTROL BASE.
3.1.6 REMOVING THE MAIN PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 4 screws [F] .
(2) Remove the MAIN PWB.
3.1.7 REMOVING THE AC PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 2 claws.
(2) Remove the AC PWB.
3.1.8 REMOVING THE SPEAKER
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 4 screws [G] .
(2) Remove the SPEAKER.
(3) Remove the opposite SPEAKER by the same method.
3.1.9 CHECKING THE PW BOARD
• To check the backside of the PW Board.
(1) Pull out the CHASSIS. (Refer to REMOVING THE CHASSIS).
(2) Remove the CONTROL BASE.
(3) Front side is turned down and a chassis is stood perpendicularly.
The check by the side of the solder side of the MAIN PWB and
AC PWB is possible.
CAUTION:
• When erecting the CHASSIS, 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 PW board.
3.1.10 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 sue to tie the wires
with a new cable tie.