Read Sony XM-222MK2 Service Manual online
7
7
XM-222MK2
3-1. BLOCK DIAGRAM
SECTION 3
DIAGRAMS
DIFFERENTIAL
AMP
Q102
DRIVE AMP
Q104
S801-1
LPF
(80Hz)
DRIVE AMP
Q108
DIFFERENTIAL
AMP
Q103
DRIVE AMP
Q105
DRIVE AMP
Q109
POWER AMP
Q110
POWER AMP
Q111
BIAS
Q106,107
7
DIFFERENTIAL
AMP
Q202
DRIVE AMP
Q204
SWITCH
Q201
MUTE
Q851
DRIVE AMP
Q208
DIFFERENTIAL
AMP
Q203
DRIVE AMP
Q205
DC DET
IC851
DRIVE AMP
Q209
POWER AMP
Q210
POWER AMP
Q211
OVERLOAD
DET
Q212
POWER/
PROTECTOR
LD801
1
4
2
12
1
3
16
13
14
B+
SWITCH
Q902
POWER
ON/OFF
Q901
15V REG
Q951,952,
D953
INVERTER
Q903
INVERTER
Q904
3
2
7
5
CN802
SPEAKER
OUT
CN801
BIAS
Q206,207
9
10
LED
DRIVE
Q803
TH801
D802
TH802
3
2
6
5
6
ON
OFF
S801-2
LPF
(80Hz)
ON
OFF
PRE AMP
IC801 (1/2)
PRE AMP
IC801 (2/2)
LPF
IC802 (1/2)
GAIN CONTROL
AMP
IC803 (1/2)
GAIN CONTROL
AMP
IC803 (2/2)
VR801-1
LEVEL
CNJ802
LPF
IC802 (2/2)
B+
(14.6V)
B-
(-14.6V)
B+
(26.2V)
B-
(-26.2V)
DC-DC CONVERTER
TRANSFORMER
T901
RECT
D951,952
2
15
ERROR
ERROR
DC-DC CONVERTER
IC901
THERMAL
Q801
F901
20A
+12V
HI LEVEL
INPUT
REM
GND
L
L
R
R
BTL
-2
R
-1
L (BTL)
OFFSET
DET
Q852,853
OVERLOAD
DET
Q112
1
-2
-1
CNJ801
7
SWITCH
Q101
3
1
5
VR801-2
LEVEL
PROTECTOR
Q802
-15V REG
Q953,954,
D954
• Signal path
: AUDIO
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