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TV Y/C PROCESS BLOCK DIAGRAM (Models : PV-20DF25/PV-20DF25-K)
MAIN C.B.A.
3.58MHz
V1 0.9 Vp-p
FROM
VIDEO
SIGNAL
PATH
BLOCK
0.5 V
20 µs
DIAGRAM
TP5312
CHROMINANCE
TP5305
A
LUMINANCE
CC VIDEO
V-PULSE
PROCESS
H-PULSE
PROCESS
I
2
C
CONTROL
BLANKING
44 43
40 10
19
16
18
11
E
F
(FROM IC6001(72))
2
I
C SERIAL DATA
(FROM IC6001(71))
2
I
C SERIAL CLOCK
E
V1
4 Vp-p
2 V
5 ms
F
V1
1.5 Vp-p
0.5 V
20 µs
G
V1
4 Vp-p
2 V
20 µs
H
V1
4 Vp-p
2 V
5 ms
(FROM IC6001(29))
V MUTE(H)
A
X5601
V1 1.1 Vp-p
3.58MHz
IC5301
0.5 V
(LUMINANCE/CHROMINANCE SIGNAL PROCESS)
31
25
VCO
CHROMINANCE
36
SIGNAL PROCESS
LUMINANCE
41
SIGNAL PROCESS
5
6
33
Q5302
IC6001
BUFFER
(OSD/CCV MICROCONTROLLER)
D5304
OSD-R
64
OSD-G
63
DISPLAY
OSD-B
56
62
CONYTOL
H
OSD-BLANKING
59
60
Q5381
58
DEFLECTION C.B.A.
P5501
P501
11
3
P5501
P501
10
4
P5501
P501
8
6
D505
TP553 TP554
D503, C513
P5501
P501
DC CONVERT
12
2
P5501
P501
Q501,Q551,T501
6
8
G
Q571
P5501
P501
HORIZONTAL
BUFFER
9
5
DRIVE
P5501
P501
5
9
B
C
D
V1 5.6 Vp-p
V1 4.8 Vp-p
V1 5.2 Vp-p
20 µs
2 V
20 µs
2 V
20 µs
2 V
20 µs
OSD
CHARACTER
MATRIX
MIX/
BLANKING
29
28
27
20
IC451 (V. DEFLECTION DRIVE)
J
VERTICAL DEFLECTION
2
12
DRIVE
4
7
Q431
FEEDBACK
BUFFER
CIRCUIT
K
59
PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K
VIDEO SIGNAL
CRT C.B.A.
V1 120 Vp-p
P6001
RED
5
RED
20 µs
50 V
RGB AMP
TP49
B
R
P5302
P351
Q353
RED AMP
23
2
2
C
G
P5302
P351
Q352
22
GREEN AMP
3
3
D
B
P5302
P351
Q351
BLUE AMP
21
4
4
TP47
HEATER
P504
P352
1
1
P504
P352
3
3
P357
1
I
V1
28 Vp-p
10 V
20 µs
J
V1
30 Vp-p
20 V
5 ms
K
V1
1080 Vp-p
200 V
20 µs
P502
PINCUSHIN
+130V
COMPENSATOR
1
CIRCUIT II
Q523
OVER
(TO IC6001(100))
CURRENT
OVER CURRENT(H)
DETECTOR
T551
+130V
ANODE
FLYBACK
FOCUS
TRANS-
FORMER
SCREEN
D553
+220V
HEATER
I
COLLECTOR
ABL
TV Y/C PROCESS BLOCK DIAGRAM
N
V1 90 Vp-p
50 V
20 µs
O
V1 110 Vp-p
50 V
20 µs
DEFLECTION
YOKE
TP50
N
O
CRT
VM
COIL
FROM
MAIN C.B.A.
P851
PV-20DF25/PV-20DF25-K
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