Sony TA-SB500WR Service Manual page 46

TA-SB500WR
QQ
3 7 63 1515 0
IC104 TK11225CMCL-G
6 5
CONTROL
CIRCUIT
CONSTANT
CURRENT
SOURCE
BANDGAP
REFERENCE
1 2
IC110, 112 CXD9774M
TE
L 13942296513
DVDD DREG
GND 1
PWM
PWM BP 2
RECEIVER
GND 3
DGND
RESET 4
DREG RTN 5
DIGITAL
DREG
REGULATOR
GVDD 6 GVDD
M3 7
DREG 8 DREG
DGND 9
M1 10
PROTECTION
M2 11
LOGIC
DVDD 12
OT
SD 13
&
UVP
DGND 14
OTW 15
DVDD DREG
GND 16
PWM
PWM AP 17
RECEIVER
GND 18
DGND
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18
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4
OVER HEAT &
OVER CURRENT
PROTECT
3
GVDD
DREG OCH
GATE
DRIVE
TIMING
CONTROL
&
PROTECTION
GATE
DRIVE
OCL
OCL
GATE
DRIVE
TIMING
CONTROL
&
PROTECTION
GATE
DRIVE
DREG OCH
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GVDD
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2 9
8
IC105 PST3629NR
OUT 1
VDD 2
–
+
VREF
GND 3
IC113 TK11118CSCL-G
Q Q
36 GVDD B
3 6 7 1 3 1 5
35 GVDD B
34 GND
33 BST B
32 PVDD B
31 PVDD B
30 OUT B
29 OUT B
28 GND
1
27 GND
26 OUT A
25 OUT A
24 PVDD A
23 PVDD A
22 BST A
21 GND
co
20 GVDD A
19 GVDD A
.
9 4 2 8
5 CD
4 NC
0 5 8 2 9 9 4 2 8
5
OVER HEAT &
OVER CURRENT
PROTECTION
CONTROL
–
CIRCUIT
+
BANDGAP
REFERENCE
2 3
m
9 9
9 9
4