JVC AV-32Z25EUY Service Manual page 6

AV-32Z25EUY
AV-28Z25EUY
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE SUB WOOFER UNIT & THE REAR
COVER
1. Unplug the power cord.
2. Remove the SUB WOOFER CORD from the AV TERMINAL
BOARD.
3. Pull up the SUB WOOFER UNIT on the top of the rear cover
upward.
4. Remove the 13 screws marked A as shown in the Fig. 1.
5. Withdraw the rear cover toward you.
REMOVING THE SIDE CONTROL JACK ASSEMBLY
" After removing the rear cover.
1. Remove the screw marked B as shown in the Fig.1.
2. While slightly raise the side control jack assembly, remove the 2
claws under the side control jack assembly.
3. Disconnect the connector "SR", "SL", "S", "F" and "CN016" as
shown in Fig. 2.
REMOVING THE SIDE CONTROL PWB
" After removing the rear cover and side control jack assembly.
1. Remove the 3 claws C from back side of the side control jack
assembly as shown in Fig. 2.
2. Pull out the SIDE CONTROL PWB.
REMOVING THE CHASSIS
" After removing the rear cover.
1. Slightly raise the both sides of the chassis by hand and remove
the two 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.)
REMOVING THE POWER & DEF. PWB
" After removing the chassis.
1. Remove the 3 screws marked D as shown in Fig. 1.
2. Remove the POWER & DEF. PWB upper.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE CENTER SPEAKER
" After removing the rear cover and chassis.
1. Remove the 2 screws marked E as shown in Fig. 1.
2. Remove the center speaker. If necessary, detach the cables.
Connector
SR
SL
S
F
CN016
Fig. 2
6
J
AV TERMINAL
C
BOARD
SIDE
CONTROL
PWB
C
(Back view)
REMOVING THE SIDE SPEAKER
" After removing the rear cover.
1. Remove the 2 screws marked F, and remove the speaker holder
as shown in Fig. 1.
NOTE : When removing the screws marked F of the speaker holder
remove the lower side screw first, and then remove the
upper one.
2. Remove the 2 screws G attaching the speaker.
3. Follow the same steps when removing the other hand speaker.
REMOVING THE AV TERMINAL BOARD
" After removing the rear cover.
1. Remove the 6 screws marked H as shown in the Fig. 1.
2. Remove the 2 claws marked I under the CHASSIS as shown in
Fig. 3.
3. Remove the AV TERMINAL BOARD slightly in the direction of
arrow J as shown in Fig. 3.
4. After removing the craw K on the connector for SUB WOOFER,
pull out the connector for SUB WOOFER. (Fig. 4)
CHECKING THE PW BOARD
To check the back side of the PW Board.
1) Pull out the chassis. (Refer to REMOVING THE CHASSIS).
2) Erect the chassis vertically 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 PW board.
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.
AV SW PWB
I
I
Fig. 3
No.52067
WOOFER AV TERMINAL
BOARD
CORD
K
SUB WOOFER
CORD
K
CONNECTOR for
SUB WOOFER
Fig. 4