JVC AV-56WP74 Service Manual page 11

2.7 DISASSEMBLY PROCEDURE
• Make sure that the power cord is pulled out from the AC outlet.
2.7.1 SPEAKER GRILLE
(1) Remove 4 screws [ A ] from rear side.
(2) Open the door of the FRONT CONTROL BOX and remove
2 screws [ B ] from front side.
(3) Take out the SPEAKER GRILLE.
2.7.2 SPEAKER (WOOFER)
• Take out the SPEAKER GRILLE
(1) Remove 4 screws [ C ].
(2) Take out the WOOFER.
(3) Disconnect the speaker wire from speaker terminal.
*Remove the both side speaker same manner.
2.7.3 SPEAKER (TWEETER)
• Take out the SPEAKER GRILLE
(1) Remove 2 screws [ D ].
(2) Take out the TWEETER.
(3) Disconnect the speaker wire from speaker terminal.
*Remove the both side speaker same manner.
2.7.4 FRONT BOARD
• Take out the SPEAKER GRILLE.
(1) Remove 4 screws [ E ].
(2) Take out the FRONT BOARD.
2.7.5 FRONT CONTROL BOX
• Take out the SPEAKER GRILLE.
(1) Remove 4 screws [ F ] attaching the FRONT CONTROL
BOX.
(2) Disconnect the connector [BH], [R], [BG] on the FRONT
CONTROL PWB.
(3) Take out the FRONT CONTROL BOX.
2.7.6 FRONT CONTROL PWB
• Take out the SPEAKER GRILLE.
• Take out the FRONT CONTROL BOX.
(1) Remove 3 screws [ G ] from rear side of FRONT
CONTROL BOX.
(2) Take out the FRONT CONTROL PWB.
48WP74CP-S : DIGITAL INPUT MODULE [AV-48WP74]
56WP74CP-S : DIGITAL INPUT MODULE [AV-56WP74]
AV JACK BOARD
POWER CORD
CAUTION AT DISASSEMBLY
Prior to disassembly, unplug the power code from the AC outlet
without fail. (Turn the power "off".)
Short the SB connector [1] pin and [2] pin of the DIGITAL INPUT
MODULE. (At the time of assembling)
Before the rear panel is inserted into the cabinet, release the
short-circuit between the SB connector [1] pin and [2] pin of the
DIGITAL INPUT MODULE.
After releasing the short-circuit between the SB connectors, do
1 2
not turn the power on until the rear panel is inserted into the
cabinet.
3 4
Negligence in carrying out the above steps may cause the
5 6
inactivation of the TV.
SB
connector
SPEAKER WIRE
SPEAKER
A
(WOOFER)
C
D
SPEAKER
(TWEETER)
F
E
B
SPEAKER GRILL
Fig.1
G
BH
FRONT CONTROL BOX
REAR SIDE
Fig.2
AV-48WP74
AV-56WP74
A
FRONT CONTROL
BOX
FRONT BOARD
R BG
FRONT CONTROL PWB
(No.52105)1-11