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Yamaha R-70 Service Manual page 4

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I
3
R-70/
R-70M
L VIEW
•1NTERNA
TRANSFORMER
. GA66450
0
POWER
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European mo
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odels
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General mod ,OARD (1)
@MAIN
CIRC~~I~
BOARD
(1)
A
TUNER CIR
w
END PACK
0
FRONT
NTENNA
0
AM LOOP ACUIT BOARD (2)
A
TUNER CIR
v
SWITCH
0
POWER
TK2250Y
(i)
POWER IC
:
~C
·
STK3061
y
0
PRE DRIVE
3~0
• MPX IC
:
LA37H (E, F)
IF IC: µPC57
BOARD (3)
4B
MAIN CIRCU
.
I T
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:
f disassembly as
ts in order o
tom cover.
RES
(Remove par
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the top and bot
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b removing
BLY PR
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DISASSEM
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·ng Heat Sink
of am
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Remov1
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C
ement
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Lock
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11
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Removing
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3
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v
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Fig. 1
Fig.
2
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.
.,
board 111
Tuner c1rcu1
Fig. 3

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