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Q Q
3 7 6 3 1 5 1 5 0
3-1. BLOCK DIAGRAM
PRE AMP
IC101 (1/2)
J101
-1
L
2
1
3
INPUT
-2
R
-3
L
(THROUGH)
OUTPUT
-4
R
TM101
D109
L
SENSING
D110
POWER ON
HIGH
D111
LEVEL
INPUT
D112
R
T E
L
1 3 9 4 2 2 9 6 5 1 3
TEMP.
DET
TH801-803
CN801
F901 30A
2
+12V
F902
30A
POWER
CONTROL
Q902
REM
3
GND
1
w w w
XM-1S
SECTION 3
DIAGRAMS
GAIN AMP
FILTER AMP
IC102 (2/2)
IC102 (1/2)
5
7
3
6
1
2
RV1
LEVEL
6
D854
D863
ACTIVE THERMAL
CONTROL
LED DRIVER
+15V
Q855
THERMAL AMP
IC106 (1/2)
THERMAL
D701
STANDBY
3
DET
DET
1
2
Q851-854
Q702
LED
DRIVER
DC DET
Q805
IC902
1
3
2
4
B+
SWITCH
S102
Q901
BLUE
ILLUMINATION
OFF
D861,862
ON
BLUE
ILLUMINATION
POWER
DC BALANCE DET
ON/OFF
IC903
Q903
1
3
+60V
DC BALANCE
2
4
–60V
DET
Q920
D920-922
x
a o
y
.
i
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BOOST AMP
IC103 (2/2)
5
7
6
S101
SUBSONIC
FILTER
OFF
BOOST
RV2
CONTROL
LOW BOOST
(15Hz)
Q101
(40Hz)
D107
+60V
PRE AMP
TRIANGLE WAVE OSC
IC101 (2/2)
IC109
BUFFER
BUFFER
7
2
6
AMP
IC111 (3/4,4/4)
Q
Q
3
7
6
LED DRIVER
D857,859
Q856
(ILLUMINATION)
OVERLOAD
LATCH
CONTROL
Q806
Q821
EMERGENCY
BUFFER
STOP CONTROL
AMP
D858
IC111 (1/4,2/4)
Q106
(PROTECTOR)
DC-DC CONVERTER
IC901
VCC
11
12
SWITCHING
REF.
BUFFER
10
DRIVER
REG
Q913
Q905-907
14
DRIVER
Q914,915
1
2
15
16
8
SWITCHING
BUFFER
9
DRIVER
3
Q912
Q909-911
u 1 6 3
.
9
9
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2
4
8
9
9
PRE AMP
PRE AMP
IC104 (1/2)
IC104 (2/2)
2
2
1
5
7
3
RV3-2
RV3-1
RV3
SIGNAL LEVEL DET
LPF
IC106 (2/2)
5
7
6
THERMAL
PROTECTION
AMP
IC105
PRE DRIVER
IC112
HIN
DRIVER
HD
12
1
8
AMP
Q108,109
DIVIDER
AMP
6
VS
IC110
Q104
LIN
DRIVER
LD
14
1
AMP
Q110,111
3
1
5
1
5
0
8
9
2
OVERLOAD
CONTROL
Q823
DC VOLTAGE
DET
Q827,828
D909,910,912,913
RECT
D161
D909
REG
DC-DC
Q102
CONVERTER
D910
TRANSFORMER
D912
T901
D913
D905
+60V
D905,906
D906
RECT
–60V
D914
+15V REG
+15V
Q916
m
D914,915
RECT
D915
–15V REG
c o
–15V
Q917
XM-1S
2
8
9
9
FILTER AMP
IC103 (1/2)
1
+60V
CURRENT
DET
Q822
CN101
POWER
AMP
Q112
L+R
SPEAKER
OUT
L+R
POWER
AMP
Q115
4
9
8
2
9
9
CURRENT
DET
Q824,825
–60V
PROTECTION
PROTECTION
DRIVER
DRIVER
CONTROL
Q802,803
Q804
REG
VDD (IC112)
Q103
• Signal path
: AUDIO
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