JVC AV-28X37SUE Service Manual page 7

2.3 DISASSEMBLY PROCEDURE
2.3.1 REMOVING THE REAR COVER
(1) Unplug the power cord.
(2) Remove the 13 screws [A] as shown in the Fig. 1.
(3) Withdraw the REAR COVER toward you.
2.3.2 REMOVING THE SIDE CONTROL JACK ASSEMBLY
• Remove the REAR COVER.
(1) Remove the screw [B] as shown in the Fig.1.
(2) While slightly raise the SIDE CONTROL JACK ASSY,
remove the 2 claws under the SIDE CONTROL JACK ASSY.
(3) Disconnect the connector [F] and [K] as shown in Fig. 2.
2.3.3 REMOVING THE SIDE CONTROL PWB
• Remove the REAR COVER.
• Remove the SIDE CONTROL JACK ASSY.
(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.
2.3.4 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.)
2.3.5 REMOVING THE POWER & DEF. PWB
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) Remove the 3 screws [D] as shown in Fig. 1.
(2) Remove the POWER & DEF. PWB upper.
(If necessary, take off the wire clamp, connectors etc.)
2.3.6 REMOVING THE SIDE SPEAKER
• Remove the REAR COVER.
(1) Remove the 2 screws [E], and remove the SPEAKER
ADAPTER as shown in Fig. 1.
NOTE :
When removing the screws [E] of the speaker holder
remove the lower side screw first, and then remove the
upper one.
(2) Remove the 4 screws [F] attaching the SPEAKER.
(3) Follow the same steps when removing the other hand
SPEAKER.
2.3.7 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 3 screws [G] as shown in the Fig. 1.
(2) Remove the 2 claws [H] under the CHASSIS as shown in
Fig. 3.
(3) Remove the AV TERMINAL BOARD slightly in the
direction of arrow [I] as shown in Fig. 3.
2.3.8 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.
2.3.9 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.
Connector
F
K
I
AV
TERMINAL
BOARD
H
AV-28X37SUE AV-28X37HKE
AV-28X35HKE AV-28X37HIE
AV-28H35SUE AV-28H35BUE
AV-28X35HUE
C
SIDE
CONTROL
PWB
C
(Back view)
Fig.2
AV SW PWB
H
Fig.3
(No.52106)1-7