1-20 (No.MB108)
3.4.4 Removing the mother board assembly
(See Fig.6)
• Prior to performing the following procedures, remove the am-
plifier assembly, rear panel and SP terminal board.
(1) From the top side of the amplifier assembly, disconnect the
card wires from the connectors CN151
on the mother
board.
(2) From the top side of the amplifier assembly, remove the
five screws F attaching the mother board.
(3) Take out the mother board assembly from the amplifier as-
sembly.
Fig.6
3.4.5 Removing the mother board
(See Fig.7)
• Prior to performing the following procedures, remove the am-
plifier assembly, rear panel, SP terminal board and mother
board assembly.
(1) From the bottom side of the mother board, remove the two
screws G and two screws H attaching the mother board.
(2) Disconnect the connectors CN521
, CN522, CN531 and
CN532 on the mother board while lifting the mother board
upward, and take out the mother board.
Fig.7
Amplifier
assembly
Mother
board
CN151
F
F
Mother board
CN522
CN531
CN532
CN521
H
H
G
G
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