JVC TH-M45 Service Manual page 29

3.3.4 Removing the mother board
(See Figs.7 to 9)
• Remove the rear panel.
• Remove the amplifier assembly.
• Remove the speaker terminal board.
(1) From the inside of the amplifier assembly, disconnect the
wire from the connector
Fig.7.)
(2) Remove the five screws G attaching the mother board.
(See Fig.7.)
(3) Take out the mother board together the amplifier boards
(A,B) and heat sink.
(4) Remove the four screws H attaching the mother board.
(See Fig.8.)
(5) Release the claws a and b of the connectors (CN521,
CN522, CN531, CN532) on the mother board using the
flat-bladed screwdriver or a similar tool, disconnect the
mother board from the connectors (CN251, CN252,
CN351, CN352) on the amplifier boards (A,B). (See Fig.9.)
Note:
When releasing the claws a and b of the connectors (CN521,
CN522, CN531, CN532) on the mother board, be careful not
to break the claws of the connectors.
Mother board
CN151
G
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CN151 on the mother board. (See
Amplifier assembly
G
Fig.7
H
Amplifier board (B)
CN532
CN531
Fig.8
CN532
CN531
CN352
Claws b
CN351
Mother board
Amplifier board (B)
Fig.9
Amplifier board (A)
CN521
CN522
Mother board
H
CN521
CN522
CN251
Claws a
CN252
Heat sink
Amplifier board (A)
(No.MB033)1-29