Block Diagram - Sony XM-GTR2022 Service Manual

4-1.

BLOCK DIAGRAM

CNJ801
-1
L (BTL)
-2
R
INPUT
CN803
-1
L
-2
HIGH LEVEL
-3
SENSING
-4
POWER ON R
CNJ802
-1
L
OUTPUT
(THROUGH)
-2
R
CN801
3
REM
F902
2
+12V
F901
1
GND
XM-GTR2022
PRE AMP
LINE AMP
IC101 (1/2)
IC102 (1/2)
6
7 3
5 1
2
L.P.F
IC301
3
RV101-1
1
LEVEL
2
PRE AMP
LINE 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
D852
(ILLUMINATION)
PROTECT LATCH
Q801,Q805,Q806
D854
PROTECTER
TEMP.DET
TH801,803,808
PTH801
D820,822,827,832
D803
+45V
HI-VOLTAGE
(B+)
DET
-45V
IC903,Q920
(B-)
S801-1
FILTER
OFF LOW BOOST
IC102 (2/2)
LPF
5
6
L.P.F
IC302 (1/2)
RV307-2
RV307-1
+16.7V
FILTER
FILTER
5 7
BOOST
EQUALIZER
RV102-1
INV. AMP
LOW
IC302 (2/2)
BOOST
(40Hz) –16.7V
2
1
3 LOW BOOST
IC202 (2/2)
5
6
S801-2
FILTER
OFF
+16.7V
LPF
BOOST
EQUALIZER
RV102-2
Q201
LOW
BOOST
(40Hz)
–16.7V
DC-DC CONVERTER
IC901
11
DRIVER
10
Q910
12
SWITCHING
Q912
REF.
REG
SWITCHING
14
Q913
8
DRIVER
9
Q911
1
2
15
16
13 13
LINE
SWITCH
Q102
DIFFERENTIAL DRIVE
7 AMP AMP
Q103 Q105
RV103
(B+)
BIAS
BIAS
Q107
Q101
DIFFERENTIAL DRIVE
AMP AMP
Q104 Q106
(B-)
LINE
SWITCH
Q202
DIFFERENTIAL DRIVE
7 AMP AMP
Q203 Q205
RV203
(B+)
BIAS
BIAS
Q207
DIFFERENTIAL DRIVE
AMP AMP
Q204 Q206
(B-)
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-GTR2022
CN804
POWER
1
AMP
Q108,Q110,Q112 L
2
OVER CURRENT
DET
Q114
(BTL) SPEAKER OUT
POWER
AMP
Q109,Q111,Q113
POWER
3
AMP
R
Q208,Q210,Q212 4
OVER CURRENT
DET
Q214
POWER
AMP
Q209,Q211,Q213
+16.7V
(B+)
+54V
(B+)
D919
+45V
(B+)
-45V
(B-)
D920
–54V
(B–)
–16.7V
(B–)