Disassembly - JVC AV-32WF47/R Service Manual

3.1 DISASSEMBLY PROCEDURE
CAUTION AT DISASSEMBLY:
• Be sure to perform the SYSTEM SETTEING, at the end of the procedure.
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• When removing each board, remove the connectors as required. Taking notes of the connecting points (connector numbers) makes ser-
vice procedure manageable.
• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.
3.1.1 REMOVING THE REAR COVER
(1) Disconnect the power plug.
(2) Remove the 12 screws [A].
(3) Withdraw the REAR COVER backward.
3.1.2 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 5 screws [B].
(2) Withdraw the AV TERMINAL BOARD toward you.
3.1.3 REMOVING THE CHASSIS
• Remove the REAR COVER.
• Remove the AV TERMINAL BOARD.
(1) Slightly raise the both sides of CHASSIS by hand.
(2) Remove the 2 claws under the both side of the CHASSIS
from the front cabinet.
(3) Withdraw the CHASSIS backward.
(If necessary, remove the wire clamp, connectors etc.)
3.1.4 REMOVING THE SPEAKER
• Remove the REAR COVER.
(1) Remove the 2 screws [D].
(2) Remove the SPEAKER with SPEAKER HOLDER.
(3) Remove the 2 screws [E].
(4) Remove the SPEAKER from the SPEAKER HOLDER.
(5) Follow the same steps when removing the other hand
SPEAKER.
NOTE :
When remove the 2 screws [D] of the SPEAKER, remove the
lower side screw first, and then remove the upper one.
3.1.5 REMOVING THE LED & POWER SW PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 2 screws [F].
(2) Withdraw the LED & POWER SW PWB toward you.
*If necessary, remove the wire clamp, connector etc.
1-6 (No.YA388)
SECTION 3

DISASSEMBLY

3.1.6 REMOVING THE FRONT CONTROL PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 2 screws [G].
(2) Withdraw the FRONT CONTROL PWB toward you.
*If necessary, remove the wire clamp, connector etc.
3.1.7 REMOVING THE USB PWB
• Remove the REAR COVER.
• Remove the AV TERMINAL BOARD.
(1) Remove the 2 screws [H].
(2) Withdraw the USB PWB toward you.
*If necessary, remove the wire clamp, connector etc.
3.1.8 CHECKING THE CHASSIS
To check the PW Board from back side.
(1) Pull out the CHASSIS (refer to REMOVING THE CHASSIS).
(2) Erect the CHASSIS 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, 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.
3.1.9 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.