Sony DVX-11B Service Manual page 26

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DVX-11B
• IC Block Diagrams
– MAIN Board –
IC101 BA9743AFV-E2
R
S
CT
1
U.V.L.O.
TIMER LATCH
TRIANGLE
VREF
RT
2
OSCILLATOR
VREF
ERROR AMP 1
NON1
3
+
VREF
INV1
4
FB1
5
S.C.P. COMP
+
+
PWM COMP1
+
+
DT1
6
ERROR AMP 2
PWM COMP2
+
+
OUT1
7
GND 8
IC401 PCM1751DBQR
16
15 14
13
12
11
ZERO DETECT
SYSTEM
FUNCTION
CLOCK
CONTROL
MANAGER
CONVERTER
INTERFACE
8 TIME OVER
SAMPLING
ENHANCED
DIGITAL FILTER
MULTI-LEVEL
WITH
SYSTEM
DELTA-SIGMA
FUNCTION
CLOCK
MODULATOR
CONTROLLER
SERIAL
INPUT
CONVERTER
INTERFACE
1 2 3
R
16
VREF
15
SCP
REFERENCE
VOLTAGE
14
+
NON2
13
INV2
12
FB2
11
DT2
10
OUT2
9
VCC
10
9
D/A
OUTPUT AMP AND
LOW-PASS FILTER
D/A
OUTPUT AMP AND
LOW-PASS FILTER
POWER SUPPLY
4
5
6
7 8
IC501 MM1567AJBE
VCC1
1
BIAS
CIN
2
4dB
LPF
MUTE1
3
CLAMP
VIN
4
4dB
LPF
+
YC MIX
5
CLAMP
YIN
6
4dB
LPF
BIAS
7
BIAS
GND1
8
NC
9
GND1 10
NC 11
CYIN 12
4dB
LPF
CLP 13
CLAMP
BIAS
CbIN 14
4dB
LPF
BIAS
MUTE2 15
CrIN 16
4dB
LPF
BIAS
GND2 17
26
26
VCC2
34
75Ω
2dB
33
COUT
DRIVER
32
GND2
75Ω
2dB
31
VOUT
DRIVER
30
VSAG
29
GND2
75Ω
2dB
28
YOUT
DRIVER
27
YSAG
26
GND2
75Ω
2dB
25
CYOUT
DRIVER
24
CYSAG
23
GND2
75Ω
2dB
22
CbOUT
DRIVER
21
CbSAG
20
GND2
75Ω
2dB
19
CrOUT
DRIVER
18
CrSAG

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