Pioneer GM-3100T Manuale di servizio - Pagina 20

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Pioneer GM-3100T Manuale di servizio
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3 7 63 1515 0
Removing the Amp Unit (Fig. 3)
A
1
Remove five black screws (M3 x 10).
2
Remove three white screws (M3 x 12).
A
Screw holes in the PCB are printed with
numbers 1 to 8.
Remove screws in numerical order.
Re-assembly takes the reverse order of
disassembly.
B
Caution)
The Amp Unit is adhered on the Heat Sink with
silicon grease. This means forcibly removing the
Amp Unit from the Heat Sink may break the
PCB.
Remove all of the eight screws. Then,
3
remove the two black screws (M3 x 5).
Tighten screws whose length is M3 x 8 or
more into the two screw holes so as to
raise the Amp Unit above the Heat Sink.
C
Then, remove the Amp Unit.
(Since screw threads differ,
TE
L 13942296513
Caution when re-assembling the Amp Unit and the Heat Sink
Be aware that the RCA Terminal may break
unless the Amp Unit and the Heat Sink are
assem-bled following the correct procedures
given below.
1) Secure the RCA-side Panel on the Heat Sink
D
with screws. (Fig. 2)
2) Place the Amp Unit on the Heat Sink aligning
with two studs. (Fig. 4)
3) Move the Amp Unit until the RCA Holder on
the Amp Unit comes in contact with the inside
of the Panel. (Fig. 4)
Caution in steps 2) and 3)
When you place the Amp Unit on the Heat Sink,
you will find no positioning marks to determine
the direction of two panels. To position them
E
correctly, the Amp Unit needs to be moved to
the place where it comes in contact with the
RCA-side panel.
If you do not position them, an excessive force
can be applied to the RCA Terminal. This may
result in breakage.
4) Secure the RCA-side Panel and the RCA
www
Holder with screws. (Fig. 2)
5) Secure the Amp Unit on the Heat Sink with
screws. (Fig. 3)
6) Secure the Panel for the Power Terminal side
F
in place with screws. (Fig. 2)
20
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and
screws cannot be used.)
1
2
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GM-3100T/XU/EW
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8
Amp Unit
1
2
1
Q Q
3
6 7
1 3
RCA Holder
RCA Terminal
Heat Sink
Move the Amp Unit
Panel for the
RCA side
u163
Stud
.
3
4
2 9
9 4
2 8
Heat Sink
1
1
3
2
2
3
1
A
Fig. 3
1 5
0 5
8
2 9
9 4
Amp Unit
(CN801)
m
Stud
co
Fig. 4
4
9 9
2 8
9 9