JVC TH-M303 Service Manual page 12

3.2 Front panel assembly section
• Prior to performing the following procedures, remove the metal
cover and front panel assembly.
3.2.1 Removing the phone jack board
(See Fig.1)
(1) From the inside of the front panel assembly, remove the
screw A and screw A' attaching the phone jack board.
Reference:
• When attaching the phone jack board, align the projec-
tions a of the front panel assembly to the holes of the
phone jack board.
• When attaching the screw A', attach the earth wire
with it.
(2) Take out the phone jack board from the front panel assem-
bly.
3.2.2 Removing the connect board
(See Fig.1)
(1) From the inside of the front panel assembly, disconnect the
card wire from the connector
(2) Remove the two screws B attaching the connect board.
Reference:
When attaching the connect board, align the projections
b of the front panel assembly to the holes of the connect
board.
(3) Take out the connect board from the front panel assembly.
3.2.3 Removing the operation board
(See Fig.1)
(1) From the inside of the front panel assembly, remove the
three screws C attaching the operation board.
Reference:
When attaching the operation board, align the projec-
tions c of the front panel assembly to the holes of the op-
eration board.
(2) Take out the operation board with the button(top).
3.2.4 Removing the front board
(See Figs.2 and 3)
• Prior to performing the following procedures, remove the oper-
ation board.
(1) From the front side of the front panel assembly, pull out the
volume knob in the direction of the arrow. (See Fig.2)
(2) From the inside of the front panel assembly, remove the
seven screws D attaching the front board. (See Fig.3)
Reference:
When attaching the front board, align the projections d of
the front panel assembly to the holes of the front board.
(See Fig.3)
(3) Take out the front board and remove the solder from the
soldered point e to remove the parallel wire. (See Fig.3)
1-12 (No.MB184)
CN561 on the connect board.
Operation board
Earth wire
C C
c
A' A
Projection a Projection a
Phone jack board
Connect board
Fig.1
Volume knob
Fig.2
Projection d
D
Projections d
Front board
D
D
Front panel assembly
Fig.3
Front panel assembly
Button (TOP)
B
Projection b Projection b
CN561
Front panel assembly
D
Solder point c
Parallel wire