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4-1. BLOCK DIAGRAM
CNJ801-1,-3
L
-1
INPUT
(BTL)
OUTPUT
L
(THROUGH)
-3
CNJ803
L
HIGH LEVEL
INPUT
R
CNJ801-2,-4
-4
OUTPUT
(THROUGH)
R
-2
INPUT
CN801
REM
F902
+12V
F901
GND
D854
PROTECTOR
XM-SD22X
SECTION 4
DIAGRAMS
PRE AMP
PRE AMP
IC101 (1/2)
IC102 (1/2)
6
3
7
5
1
2
L.P.F
IC301
3
RV101-1
1
LEVEL
2
RV301-1
PRE AMP
PRE AMP
IC101 (2/2)
IC202 (1/2)
3
1
3
2
1
2
RV101-2
LEVEL
POWER
ON/OFF
Q903
DC DET
IC902
B+
SWITCH
Q901,Q902
D850,852
(POWER)
D851,853
(POWER)
PROTECT LATCH
Q801,Q805,Q806
TEMP.DET
Q809
TH801,803,808
PTH801
D820,822,827,832
D803
+45V
(B+)
HI-VOLTAGE
DET
-45V
IC903,Q920
(B-)
S801-1
FILTER
OFF
LOW BOOST
IC102 (2/2)
LPF
5
7
6
L.P.F
IC302 (1/2)
+16.7V
(B+)
5
7
RV301-2
BOOST
FILTER
FILTER
EQUALIZER
RV102-1
Q101
INV. AMP
LOW
IC302 (2/2)
BOOST
(40Hz)
–16.7V
(B-)
2
1
3
LOW BOOST
IC202 (2/2)
5
7
6
S801-2
FILTER
OFF
+16.7V
(B+)
LPF
BOOST
EQUALIZER
RV102-2
Q201
LOW
BOOST
(40Hz)
–16.7V
(B-)
DC-DC CONVERTER
IC901
11
DRIVER
10
Q910
12
SWITCHING
Q912
REF.
REG
SWITCHING
14
Q913
8
DRIVER
9
Q911
1
2
15
16
11
11
LINE
SWITCH
Q102
DIFFERENTIAL
DRIVE
AMP
AMP
Q103
Q105
Q108,Q110,Q112
RV103
BIAS
OVER CURRENT
BIAS
Q107
DIFFERENTIAL
DRIVE
AMP
AMP
Q104
Q106
Q109,Q111,Q113
LINE
SWITCH
Q202
DIFFERENTIAL
DRIVE
AMP
AMP
Q203
Q205
Q208,Q210,Q212
RV203
BIAS
OVER CURRENT
BIAS
Q207
DIFFERENTIAL
DRIVE
AMP
AMP
Q204
Q206
Q209,Q211,Q213
LINE SWITCH
CONTROL
Q701,702
DC OFFSET
DET
Q802,Q803,Q804
DC-DC
CONVERTER
TRANSFORMER
T901
B+REG
RECT
Q914
D911,917
SWITCHING
DRIVER
RECT
Q904,Q905,Q906
D909
RECT
D905
RECT
D906
RECT
D910
SWITCHING
DRIVER
Q907,Q908,Q909
RECT
B-REG
D912,918
Q915
• Signal path
: AUDIO
XM-SD22X
CN804
BTL
POWER
1
AMP
L
2
DET
Q114
POWER
AMP
SPEAKER OUT
CN805
BTL
POWER
1
AMP
2
R
DET
Q214
POWER
AMP
+16.7V
(B+)
+54V
(B+)
D919
+45V
(B+)
-45V
(B-)
D920
–54V
(B–)
–16.7V
(B–)
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