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Q Q
3 7 6 3 1 5 1 5 0
4-1. BLOCK DIAGRAM
PRE AMP
IC801 (2/2)
CNJ805-1
5
L
7
(BTL)
6
VR801-1
PHASE
CN809
L
INPUT
HIGH
LEVEL
(FRONT)
(INPUT (FRONT))
R
PRE AMP
IC801 (1/2)
CNJ805-2
3
1
R
2
VR801-2
PHASE
CNJ805-3
L
(BTL)
CN810
T E
L
1 3 9 4 2 2 9 6 5 1 3
L
HIGH
INPUT
LEVEL
(REAR)
(INPUT (REAR))
R
CNJ805-4
R
TEST TONE
GENERATOR
IC812
3
1
2
5
7
6
F901
CN801
40A
REG
+12V
Q901,902
DC DET
IC811
D902
GND
POWER
D815
ON/OFF
w w w
Q903
CNJ802
REM
.
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SECTION 4
DIAGRAMS
PHASE AMP
H.P.F
L.P.F
IC802 (2/2)
IC803 (2/2)
IC804 (2/2)
6
7
5
7
6
7
5
VR802-2
FILTER
PHASE AMP
H.P.F
L.P.F
IC802 (1/2)
IC803 (1/2)
IC804 (1/2)
2
1
3
1
2
1
3
VR802-3
FILTER
D812
LD802
S802
OVER
TEST
CURRENT
TONE
(PROTECTOR)
DC-DC CONVERTER
12
B+ CONT
Q801
LD804
POWER
REF.
(PROTECTOR)
14
LD801
THERMAL
1
(PROTECTOR)
2
x
a o
u 1 6 3
y
15
i
16
TEMP DET
SWITCH
B+ CONT
3
D801,804,805,
Q808
Q802
808,809
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8
S801-1
(FRONT)
FILTER
L.P.F
LPF
IC805 (2/2)
LOW BOOST
OFF
LINE AMP
IC813 (2/2)
IC813 (1/2)
HPF
6
7
VR802-1
5
7
3
FILTER
6
2
B+
(+14.2V)
VR803-1
LOW
LEVEL
BOOST
SHIFT
(40Hz)
Q101
B–
S801-2
(–14.2V)
FILTER
L.P.F
LPF
IC805 (1/2)
LOW BOOST
OFF
LINE AMP
IC814 (2/2)
IC814 (1/2)
2
1
HPF
3
VR802-4
1
5
FILTER
2
6
B+
(+14.2V)
VR803-2
LEVEL
LOW
SHIFT
BOOST
Q201
(40Hz)
VR804-2
B–
(–14.2V)
(REAR)
Q
Q
3
7
6
3
1
SWITCH
LED DRIVE
Q810
Q803
DC-DC
CONVERTER
IC901
TRANSFORMER
T901
11
INVERTER
10
Q906,907
REG
DRIVER
Q904
8
INVERTER
9
Q908,909
DRIVER
Q905
.
9
9
2
4
9
9
8
LINE
SWITCH
Q102
DIFFERENTIAL
DRIVER
1
AMP
AMP
Q103
Q105
VR101
BIAS
BIAS
Q106
DIFFERENTIAL
DRIVER
VR804-1
AMP
AMP
LEVEL
Q104
Q107
LINE
SWITCH
Q202
DIFFERENTIAL
DRIVER
POWER
7
AMP
AMP
Q203
Q205
VR201
BIAS
BIAS
Q206
DIFFERENTIAL
DRIVER
POWER
AMP
AMP
LEVEL
Q204
Q207
5
1
5
0
8
9
2
4
MUTE
SWITCH
Q805
D816
B+
LED DRIVE
D909,910
(+23.5V)
Q804
D910
RECT
B+
B+
REG
(+14.2V)
Q910
D903
D909
B+
(+42V)
D904
B+
LD803
(+36V)
OFFSET
D903
(PROTECTOR)
RECT
D907
B+
(+36V)
D904,905,907,908
RECT
D908
B–
m
(–35V)
D906
c o
D905
RECT
B–
(–35V)
D906
B–
(–42V)
D911
B–
B–
REG
(–14.2V)
D912
D911,912
Q911
RECT
XM-1004GX
2
9
9
CN803
OVERLOAD
FRONT
DET
SPEAKER
Q112
OUT
POWER
AMP
Q108
L
POWER
AMP
Q110
BTL
OVERLOAD
DET
Q212
AMP
Q208
R
AMP
CN804
Q210
REAR
SPEAKER
OUT
L
9
8
2
9
9
BTL
R
SWITCH
B– (–35V)
Q806
OFFSET
DET
Q807
OFFSET
DET
Q809
• Signal path
: AUDIO
• Front-ch : same as Rear-ch.
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