Diagrams; Block Diagram - Sony XM-404EQX Service Manual

XM-404EQX/604EQX

3-1. BLOCK DIAGRAM

CNJ801
–3
L
(MONO)
–4
R
INPUT
REAR
CN803
L
HIGH
LEVEL
INPUT
R
CNJ801-1
L
(MONO)
CN802
L
HIGH
INPUT
LEVEL
FRONT
INPUT
R
CNJ801-2
R
CN801
F901
+12V
REMOTE
Signal path
: AUDIO
04
SECTION 3

DIAGRAMS

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