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3-3.
CIRCUIT BOARDS
LOCATION
MAIN BOARD
INPUT BOARD
ABJ BOARD
Ss
INPUT J BOARD
<9
C
2
Ly
a
VOL BOARD
SP BOARD
RYJ BOARD
SELECTOR BOARD (2/2)
H.P BOARD
EQ BOARD
SELECTOR BOARD (1/2)
CONTROL BOARD (2/2)
3-4. IC BLOCK DIAGRAMS
1C501
UPC1237HA
IC807
M50253P
OVEA
LOAD
DET
OFFSET
DET
LATCH
AUTO
RESET
NC
B
~
3
2
a
a
eM
ay
=
3
3
ra)
3-5.
BLOCK
DIAGRAM
DIRECT
CS
PJU4 (2/2)
Ic401
1/2
s101
(FUNCTION)A
PJU6
.
La]
el
|
|
AUX
©
rt
—P U3
IN
|@
++
[TAPE?|
=
|
REC OUT
|G
—P ud
IN
|@
REC OUT
7 is
—PJ2
ve
/
Icg
REMOTE
SENSOR
@
TUNER
CONTROL
OUT
(18)SIRCS
Q806
INVERTOR
PHONO
TUNER
CD
AUX
TAPE4
TAPE2
DB801-806
$801-806
("switc. )
QB04
RETURN
SWITCH
($)CE
RCH:SAME
AS
LCH
—id—
IC803
M50720
=358P
SYSTEM
CONTROL
$102
OUT
IN
$204
DIRECT
INPUT
DIRECT
s104
IC802
FUNCTION
MOTOR
DRIVE
MUTE(42)
POWER
ON/OFF
RESET)
CLOCK(26)
DATA(27)
vop(8)
fl source
(
RCt
$20
BIS 2
cc)
moron )
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