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3-1.
BLOCK DIAGRAM
J001 (2/2)
L
-3
(BTL)
INPUT
-4
R
D901
CN901
L
1
HIGH LEVEL
3
INPUT/
2
SENSING POWER ON
4
R
J001 (1/2)
-1
L
OUTPUT
(THROUGH)
-2
R
TB901 (2/2)
REM
OVER VOLTAGE
DET
Q902
+12V
F901
40A
GND
F902
40A
XM-GTR2202
PRE AMP
IC301 (1/2)
3
1
2
SUBSONIC FILTER
IC302 (1/2)
3
1
2
-1
-2
LPF
IC302 (2/2)
-1
6
RV301
5
SUBSONIC
-2
FILTER
PRE AMP
IC301 (2/2)
RV302
LOW PASS
FILTER
5
7
6
THERMAL
TEMP.DET
DET
TH701,702
Q701,702
FAN901
DC FAN
FAN
DRIVER
Q703
POWER
ON/OFF
Q903
B+
SWITCH
Q916
B+
SWITCH
Q901
D919-922
PROTECTOR
(ILLUMINATOR)
DET
Q904,905
D903
HIGH
PROTECTOR
+50V
VOLTAGE
DET
DET
-50V
Q915
Q305
LOW BOOST/
LINE AMP
GAIN CONTROL AMP
IC305
IC303 (1/2)
2
1
3
1
2
-1
EQ
-1
SW801
-1
(FILTER)
RV802
RV801
OFF
LOW BOOST
LEVEL
(40Hz)
-2
FILTER
7
-2
EQ
-2
6
7
5
LOW BOOST/
GAIN CONTROL AMP
IC303 (2/2)
THERMAL DET
IC304 (1/2)
TEMP.DET
TH302,303
PROTECT
2
1
SWITCH
3
Q303
DC OFF DET
Q301,302
THERMAL DET
IC304 (2/2)
TEMP.DET
5
7
TH301
DC-DC CONVERTER
IC901
8
DRIVER
9
Q917
12
DRIVER
Q908
REF.
REG
DRIVER
Q907
14
11
DRIVER
10
Q918
1
2
PROTECTOR
3
DET
Q906
15
16
R
(PROTECTOR)
11
11
LINE
SWITCH
Q101
DIFFERENTIAL
DRIVE
DRIVE
–
AMP
AMP
AMP
+
Q104
Q105
Q109
MUTE
Q102
BIAS
Q107,
108
–
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
+
Q103
Q106
Q110
LINE
SWITCH
Q201
DIFFERENTIAL
DRIVE
DRIVE
+
AMP
AMP
AMP
–
Q204
Q205
Q209
MUTE
Q202
BIAS
Q207,
208
+
DIFFERENTIAL
DRIVE
DRIVE
AMP
AMP
AMP
–
Q203
Q206
Q210
DC OFFSET
DET
Q306,307
DC-DC
CONVERTER
TRANSFORMER
T901
+15V REG
RECT
D315,316
Q304
SWITCHING
RECT
DRIVER
D310
Q909,911,913
RECT
D303
RECT
D304
RECT
D311
SWITCHING
DRIVER
RECT
-15V REG
Q910,912,914
D317,318
Q305
D904
POWER/
PROTECTOR
S
G
: AUDIO
(POWER)
XM-GTR2202
TB901 (1/2)
POWER
AMP
L
Q111,114,117
OVERLOAD
DET
Q113,116,119
BTL
SPEAKER OUT
POWER
AMP
Q112,115,118
POWER
AMP
R
Q211,214,217
OVERLOAD
DET
Q213,216,219
POWER
AMP
Q212,215,218
+15V
+54V
D312
+50V
–50V
D313
–54V
–15V
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