Panasonic PV-DF204 Service Manual page 169

TV Y/C PROCESS BLOCK DIAGRAM (Models : PV-DF274/PV-DF2704/PV-DF2704-K)
MAIN C.B.A.
3.58MHz
V1 0.9 Vp-p
TO/FROM
VIDEO
SELECTOR
BLOCK
DIAGRAM 0.5 V 20 µs
CHROMINANCE
A
LUMINANCE
V-PULSE
PROCESS
H-PULSE
PROCESS
(FROM IC6001(72))
44
2
I C SERIAL DATA
I 2 C
CONTROL
(FROM IC6001(71)) BLANKING
43
2
I C SERIAL CLOCK
40 10 19 16 18
E
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
D5509
(FROM IC6001(29))
V MUTE(H)
X5601
3.58MHz
IC5301
(LUMINANCE/CHROMINANCE SIGNAL PROCESS)
31 25
VCO
TP5312
CHROMINANCE
36
SIGNAL PROCESS
TP5305
LUMINANCE
41
SIGNAL PROCESS
5
6
11 33
Q5302
IC6001
BUFFER
(OSD/CCV MICROCONTROLLER)
F
D5304
OSD-R
64
OSD-G
63
(FROM IC3351(2)) DISPLAY OSD-B
56 62
VIDEO CONYTOL
H
OSD-BLANKING
59 60
Q3305
58
TV MAIN C.B.A.
P5401 P501
5 5
P5401 P501
6 6
NOT USED
J5902 J5901
NOT USED
D5507
Q5501
BUFFER
D5508 NOT USED
P5401 P501
12 12
J504 NOT USED
P5401 P501
8 8
TP553 TP554
D503, C513
P5401 P501
DC CONVERT
4 4
P5401 P501
10 10 Q501,Q551,T501
G Q571
P5401 P501 HORIZONTAL
BUFFER
DRIVE
7 7
P5401 P501
11 11
A B C D
V1 1.1 Vp-p V1 5.6 Vp-p V1 4.8 Vp-p V1 5.2 Vp-p
0.5 V 20 µs 2 V 20 µs 2 V 20 µs 2 V 20 µs
MATRIX
IC451 (V. DEFLECTION DRIVE)
J
VERTICAL DEFLECTION
2 12
DRIVE
4 7
Q431
FEEDBACK
BUFFER
CIRCUIT
DEFLECTION C.B.A.
Q751, Q753
PINCUSHION
COMPENSATOR
Q754
CIRCUIT
PIN P504 INTEGRATOR
SW+12V
3 3 CIRCUIT
R763 R766
H-PIN H-WID
R753
IC752
H-KEY
(COMPARATOR)
6
PIN P504
5
7 7
R778
3
DC
2
LEVEL
NOT USED
NOT USED
K
REC VIDEO SIGNAL
CRT C.B.A.
P6001
RED
5 RED
RGB AMP
TP49
B
R P5302 P351 Q353,356
23
2 ED 4
OSD
C
G Q352,355
CHARACTER P5302 P351
22
MIX/ 3 5
D
BLANKING
B P5302 P351 Q351,354
21
4 6
TP48 TP46
TP47
P503 P352
1 1
P503 P352
5 5
P355
1
29 28 27 20
I V1
10 V
J V1
20 V
K V1
200 V
Q541
PINCUSHIN
P504 PIN
OVER
COMPENSATOR
CURRENT
5 5
CIRCUIT II
DETECTOR
D542
Q523
OVER
CURRENT
DETECTOR
7
T551
+B
1
FLYBACK
TRANS-
FORMER
VR
D553
+220V
HEATER
I
COLLECTOR
ABL
PB VIDEO SIGNAL
N
V1 90 Vp-p
50 V 20 µs
O
V1 110 Vp-p
V1 120 Vp-p
50 V 20 µs
20 µs
50 V
DEFLECTION
YOKE
TP50
RED AMP
N
GREEN AMP
O CRT
BLUE AMP
VM
HEATER
COIL
28 Vp-p
20 µs
30 Vp-p
5 ms
1080 Vp-p
20 µs
(FROM IC6001(41))
TV POWER ON(H)
+130V
(FROM IC6001(100))
OVER CURRENT(H)
ANODE
FOCUS
SCREEN
TV Y/C PROCESS BLOCK DIAGRAM
PV-DF274/PV-DF2704/PV-DF2704-K