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XAV-AX150
46
Sony CONFIDENTIAL
For Authorized Servicer
• IC Block Diagrams
– MAIN Board –
IC120 TCB501HQ (Z)
OFFSET
DET
1
STBY
STBY
4
OUT1 (
)
7
PW
-GND1
8
OUT1 (+)
9
PW
-GND2
2
REPPLE
10
IN1
11
IN2
12
PRE-GND
13
IN4
14
OUT2 (
)
3
OUT2 (+)
5
VDD2
6
IN3
15
OUT3 (+)
17
PW
-GND3
18
OUT3 (
)
19
VDD1
20
OUT4 (+)
21
MUTE
22
OUT4 (
)
23
PW
-GND4
24
AC-GND
AC-GND
AC-GND
AC-GND
AC-GND
16
H-SW
25
OFFSET
DET
H-SW
MUTE
IC160 LV56851UV-XH
AMP
1
AUDIO
4
VCC2
7
VCC1
8
SYS
9
GND
2
SCL
10
VDD
11
SDA
12
RSTB
13
BDET
14
ILM
3
CD
5
ACCIN
6
ACCDET
15
+
–
+
–
+
–
+
–
CTRL
+
–
VREF
VREF
VREF
VREF
VREF
AMP_EN
VREF
OVP
BDET
+
VREG
VREF
UVDET
TSD/
TWARN
OVDET
I2C-BUS
CTL
5.1V
1.25V
OVP
TSD
UV
OV
RESET
–
+
VDD
VDD
FILT
OVP
OVP
ILM_EN
AUDIO_EN
CD_EN
SYS_EN
VDD
VDD
ALL OUTPUT OFF EXCEPT VDD
OVP
ALL OUTPUT OFF
TSD
IC200, 202 BD9876BEFJ-E2
EN
6
VCC
8
BST
7
SYNC
5
THERMAL
SHUTDOWN
OSCILLATOR
300 kHz
REGULATOR
REFERENCE
VREF
CURRENT
SENSE AMP
CURRENT
COMPARATOR
Q
S R
SHUTDOWN
UNDER
VOLTAGE
LOCK OUT
LX 1
GND 2
FB 4
VC 3
6
ERROR
AMP
1.0 V
SOFT
START
SYS SET
2020/02/07 23:51:10 (GMT+09:00)