Specific Service Instructions; Disassembly Procedure - JVC AV-27320 Service Manual

AV-27320
AV-27330
AV-27S33

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER
1. Disc onnect the power plug from wall outlet.
2. As s hown in the Fig.1, remove the
[For AV-27320/S,R]
3. As s hown in Fig.1, remove the
[For AV-27330/S,R AV-27S33/S,R]
3. As shown in Fig.1, remov e the
4. Then remove the REAR COVER toward you.
REMOVING THE MAIN PWB
" After removing the REAR COVER.
1. Pick this side of the MAIN PWB and raise one slightly, take off the
# # # #
PWB stopper marked from the c abinet bottom.
2. Withdraw the chass is backward.
(If necess ary, remove the wire clamp, c onnectors etc.)
REMOVING THE SPEAKER
" After removing the rear cover.
1. As shown in Fig. 1, removing the
remove the speaker.
2. Follow the s ame steps when removing the other hand speak er.
NOTE : When removing the screws marked
remove the lower side screw first, and then remove the
upper one.
8
! !
7 ! !
screws marked .
" " " "
3
screws marked .
" " " "
4
screws marked .
$ $ $ $ ,
screws marked
$ $ $ $
of the speak er,
CHECKING THE PW BOARD
To check the PW Board from back side.
1. Pull out the chassis (refer to REMOVING THE MAIN PWB).
2. Erect the chas sis vertically so that you c an easily check the bac k
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 s ure that the wire connec tor is
properly connec ted.
" When conducting a check with power supplied, be sure to
confirm that the CRT EART H WIRE (BRAIDED ASS' ' ' ' Y) is
connected to the CRT SOCKET PW boar d.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire.
2. Never remove the c able tie used for tying the wires together.
Should it be inadvertently removed, be sure to tie the wires with a
new cable tie.
then
No.51937