Read Sony XVM-R75 Service Manual online
9
XVM-R75
2-5. IC BLOCK DIAGRAMS
U1 PT2257-S (MAIN Board) (1/2)
U13 HS-9913-ST (DISPLAY Board) (1/3)
U17 KIA494AF (DISPLAY Board) (1/3)
VR 2
VR 1
VIN1
VOUT1
GND
DATA
VIN2
VOUT2
VCC
CLOCK
7
2
3
4
8
1
REF AMP
VOL AMP 2
VOL AMP 1
6
LOGIC
CONTROL
5
VREF
14
15
16
17
21
22
23
19
20
24
25
18
10
11
12
13
2
3
4
1
9
CONTROL
CIRCUIT
INTERCEPT
CIRCUIT
5
6
7
8
8
OUT3
OUT2
GND
GND
GND
OUT1
VCC2
VR
IN1
IN2
GND
IN3
VCC1
1
2
3
4
5
20
VDD
VSS
VSS
5M
NMOS
GND
(1)TR IN
(1)VCO IN
(1)RES
(1)RES
(1)VSS
(2)TR IN
(2)VCO IN
(2)RES
(2)RES
(2)VSS
(1)VDD
(1)OTC
(1)CAP
(1)CAP
(1)VCO OUT
(2)VDD
(2)OTC
(2)CAP
(2)CAP
(2)VCO OUT
AMP
19
18
17
16
VCO
TR
BUFFER
6
7
8
9
10
15
VDD
5M
NMOS
GND
AMP
14
13
12
11
VCO
TR
BUFFER
2
1
13
14
12
11 10
9
15
16
3
4
5
6
7
8
OSCILLATOR
LOW SUPPLY
VOLTAGE
PROTECTIVE
FLIP-
FLOP
FLOP
REFERENCE
VOLTAGE
Q
P.W.M
Q
Q1
Q2
NON-INV
INPUT
INV INPUT
FEED BACK
DEAD TIME
CONTROL
CT
RT
NON-INV
INPUT
INV INPUT
VREF
OUTPUT
CONTROL
VCC
C2
E2
E1
GND
C1
OFFSET
U8 BA6247FP-Y (MAIN Board) (2/2)
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