Sony SA-WSLF1 Service Manual page 34

SA-WSLF1
– AMP Board –
IC101, 102, 105-107 CXD9774M
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
IC108, 110 CXD9788AR
PWM
(Secondary Clock System)
1 2 3 4 5 6 7
34
GVDD
DREG OCH
GATE
DRIVE
TIMING
CONTROL
&
PROTECTION
GATE
DRIVE
OCL
OCL
GATE
DRIVE
TIMING
CONTROL
&
PROTECTION
GATE
DRIVE
DREG OCH
GVDD
48 47 46 45 44 43 42 41 40 39 38 37
Liner
∆ ∑ Converter
Interpolator
Clock Generator
INIT/MUTE
8 9 10 11 12 13 14 15 16 17 18 19 20
IC303 TK11118CSCL-G
36 GVDD B 5
35 GVDD B
34 GND
33 BST B
32 PVDD B
CONTROL
31 PVDD B
CIRCUIT
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
20 GVDD A
19 GVDD A
Sampling Rate
Converter
Filter
&
Gain
DF2 DF1
LOW
Control
CUT
Filter
Clock Generator
(Primary Clock System)
Serial Control
28
21 22 23 24 25 26 27
OVER HEAT &
OVER CURRENT
PROTECTION
BANDGAP
REFERENCE
2
S P
36 XFSIIN
35 DVDD
34 TEST
33 BFVSS
32 BFVDD
29 30 31
4
3