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Yamaha PC5002M Service Manual page 3

Dual channel power amplifier

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Removal of top cover : buffer circuit board, drive circuit board can be replaced.
Removal of side covers : sub power supply circuit board, sub power supply transformer can be replaced.
Removal of heatsink (rear)
:
power circuit board can be replaced.
Removal of terminal unit : input circuit board, output relay circuit board, can be removed.
Removal of bottom cover : diode circuit board, main power transformer can be replaced.
Removal of front panel : meter circuit board, meter lamp circuit board, LED circuit board can be replaced.
TERMINAL UNIT
1-
.y
I .
/ f 7 - 9 -
b
(L)
/ f 7 - 9 -
b ( R )
POWER C.BOARD(L)
POWER C.BOARD(R)
I
7 ~ 4
a -
9-
b (
DIODE
C.BOAF
BUFFER C.BOARD
/ f > y
7
7
9- b
~ 7 < 7 " * 9 - b ( L )
P 7 4 ? > -
b ( R )
DRIVE C.BOARD(L)
DRIVE C.BOARD(R)
POWER C.BOARD(R)
POWER C.BOARD(L)
/ f 7 - > -
b ( R )
/ f 7 - 9 -
b
(L)
I
I
Cl ~ oF' U ' U DR
E LAY
LYTlC
I
CAPACITOR
I
$+'>
$4>
b 7 > Z
b 7 > X
MAIN POWER TRANSFORMER
5+"-14--
P
-5- b
( L )
DIODE
C.BOARD(L)
7
'
V l t i R
$ - - 5 7 - 7 > 7 O
9 - b
>-
b
b 7 > Z
METER LAMP
P
" " A
Q
. Y
C.BOARD
SUB POWER TRANSFORMER
I
SUB POWER SUPPL
I
L E D 9 - b
LED C.BOARD
".Y"T\I
ID
1
I
1
'
METER
ATTE NUATO R
POWER'SWITCH
7 s y y q . - 9 -
/ f 7 - - 4 4 * ~ 7 -
2

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