JVC TH-A85 Service Manual page 22

3.4.6 Removing the power amplifier board (A)
(See Figs.8 and 9)
• Prior to performing the following procedures, remove the am-
plifier assembly, rear panel, SP terminal board, mother board
assembly and mother board.
(1) Remove the three screws J attaching the heat sink to the
power amplifier board (A). (See Fig.8)
(2) From the bottom side of the power amplifier board (A), dis-
engage the four sections b of the engagement. (See Fig.9)
(3) From the top side of the power amplifier board (A), disen-
gage the section c of the engagement to the direction of the
arrow. (See Fig.9)
(4) Remove the power amplifier board (A) from the P.TR hold-
er (A).
3.4.7 Removing the power amplifier board (B)
(See Figs.8 and 10)
• Prior to performing the following procedures, remove the am-
plifier assembly, rear panel, SP terminal board, mother board
assembly and mother board.
(1) Remove the three screws K attaching the heat sink to the
power amplifier board (B). (See Fig.8)
(2) From the bottom side of the power amplifier board (B), dis-
engage the four sections c of the engagement. (See Fig.9)
(3) From the top side of the power amplifier board (B), disen-
gage the section d of the engagement to the direction of the
arrow. (See Fig.9)
(4) Remove the power amplifier board (B) from the P.TR hold-
er (B).
1-22 (No.MB040)
P.TR holder (A)
J
Power
amplifier
board (A)
P.TR holder (B)
Fig.8
Sections b
1
2
CN251
(Bottom side)
Power amplifier
board (A)
CN252
2
1
(Bottom side)
Sections b
Fig.9
Sections d
CN351
CN352
Section e
P.TR holder (B)
Sections d
Fig.10
K
Power
amplifier
board (B)
K
Heat sink
P.TR holder (A)
Section c
1
2
(Bottom side)
Power amplifier
board (B)
2
1
(Bottom side)