Read Sony XM-404EQX / XM-604EQX Service Manual online
XM-404EQX/604EQX
3-1. BLOCK DIAGRAM
– 9 –
– 10 –
SECTION 3
DIAGRAMS
ON/OFF
DRIVE
DRIVER
Q907
ON/OFF
DRIVE
Q909
ON/OFF
DRIVE
Q908
+6V
REG
Q904
Q905, 906
T901
DC-DC CONVERTER
TRANSFORMER
D912
+6V
+15V
REG
Q911, 913
–15V
REG
Q912, 914
B+(AMP)
+15V
–15V
B–(AMP)
B+(PRE)
B–(PRE)
D901
D902
D902
D903
D904
D904
R-CH
Signal path
: AUDIO
: AUDIO
CN803
CN805
–4
–3
CNJ801
(REAR)
(FRONT)
+
+
CNJ801-2
CNJ801-1
+
+
+
CN802
L
CN801
+12V
REMOTE
LINE AMP
IC101
R-CH
R-CH
LPF
IC103 (2/2)
7
6
LPF
IC103 (1/2)
1
2
VR101-1
LPF
OFF
HPF
S101
FILTER
(FRONT)
EQ AMP
VR101
FILTER
(FRONT)
S102
DIRECT
(FRONT)
OFF
ON
BUFFER
IC110
LINE
SWITCH
Q112
1
3
LINE
CONTROL
B– (AMP)
B+(AMP)
Q813, 814
POWER
ON/OFF
Q901
B+
SWITCH
Q902 , 903
LED
DRIVE
SWITCH
Q807
F901
3
16
10
9
ON/OFF
CONTROL
OSC
12
DC-DC CONVERTER
CONTROL
IC901
TH802
TH801
PROTECT
LATCH
Q809, 812
(CURRENT CHECK)
PROTECT
LATCH
Q808, 811
(CURRENT CHECK)
DRIVER
Q101 – 106
POWER
AMP
Q107 – 110
OVER LOAD
DET
Q111
VOLTAGE
CHECK
Q815-816
SIGNAL METER AMP
IC801
7
6
1
12 – 15
16 – 21
LED
DRIVE
Q801 – 804
LD801 – 824
LED CONTROL
(FRONT)
IC802
L
R
MONO
L+R
L
R
MONO
L+R
CN804
R-CH
VR107
LEVEL
HIGH
LEVEL
INPUT
INPUT
L
(MONO)
L
(MONO)
INPUT
FRONT
VCC
LEVEL
METER
POWER/PROTECTOR
THERMAL
+
–
2
1
3
+
–
5
7
6
EQ
IC102
VR101-2
+
–
2
1
3
IC104-108
VR102 50Hz
VR103 200Hz
VR104 800Hz
VR105 3.2kHz
VR106 12.8kHz
EQUALIZER
EQ BUFFER
IC109
DC DET
IC902
4
2
3
1
B+
AC1 IN
D4–D1
O6–O1
Q810
B+
LED
DRIVE
SWITCH
Q806
OFFSET
B+
LD826
LED
DRIVE
SWITCH
Q805
OVER
CURRENT
B+
LD825
B+
D801
R
L
HIGH
LEVEL
INPUT
INPUT
R
SPEAKER OUT
FRONT
SPEAKER OUT
REAR
(FRONT)
(FRONT)
ON/OFF
DRIVE
Q910
604EQX
604EQX
1
R
R
INPUT
REAR
LD827
04
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