Video Signal Path Block Diagram - Panasonic PV-DF204 Service Manual

VIDEO SIGNAL PATH BLOCK DIAGRAM

POWER SUPPLY C.B.A.
UHF/VHF TUNER/TV
DEMODULATOR UNIT
Q7031
RF VIDEO
17 BUFFER
(WITH REAR A/V JACK)
VIDEO IN 1
OPERATION C.B.A.
VIDEO IN 2
2
MAIN C.B.A.
P7002 P4003
1 1 V1 0.5 Vp-p
0.2 V 20 µs
V1 1 Vp-p
IC3001
(VIDEO PROCESS)
0.5 V 20 µs
(WITH REAR TUNER
20
A/V JACK)
P9501 P4004
LINE1
18
13 13
LINE2
16
REC PB
Y/C MIX
ART V/H MIX
13 25
(FROM IC6001(13))
V-LOCK PULSE
ATTENATOR
Q3001
(-6dB)
P4701 P4005
12 12
V1 4.3 Vp-p
2 V
5 ms
IC5352 (SW)
1
3
5
(FROM IC6001(23))
LINE1(L)/LINE2(H)
(FROM IC6001(69))
TUNER(H)/LINE(L)
REC VIDEO SIGNAL
V1 0.6 Vp-p
IC3201
0.2 V 20 µs
(FROM IC6001(15))
CCD 1H
ROTARY SW
DELAY
(TO IC6001(9))
ENVELOPE VOLTAGE
5 4
29 27 49 40
AT ENVELOPE
DETECT
REC PB
46
REC
REC
PB-Y
REC/PB LUMINANCE
SIGNAL PROCESS
PB 45
PB REC-Y
Y/C
41
MIX
REC
REC
REC-C
REC/PB CHROMINANCE
Q3002
SIGNAL PROCESS
PB PB PB-C
34
I C 2
CONTROL
10 12 82 81 3 7 8
A
B
X3001
1 8
OSC
(3.58MHz)
CCD 1H
DELAY
Q3003
BUFFER
To Hi-Fi AUDIO
3.58MHz
SIGNAL PATH
BLOCK DIAGRAM
IC3201
TP3001
V1 1 Vp-p
ATTENATOR
Q3004
(-6dB)
0.5 V 20 µs
IC5651
(Y/C SEPARATION)
LINE1
LINE
Q5651
LINE2
BUFFER
7 4
TUNER
2 4
PB VIDEO SIGNAL
Hi-Fi AUDIO/VIDEO HEAD AMP C.B.A.
V1
0.2 Vp-p
0.1 V 5 ms
IC3501 (HEAD AMP)
V1 0.4 Vp-p
SP
0.1 V 5 ms
LP/SLP
TP3002
C
REC
P3001 P3501 L
30
1 1
R
PB
BUFFER
SP
LP/
L
SLP
V1 0.4 Vp-p
R
31 32 1
0.2 V 5 ms
(FROM IC6001(18))
(TO/FROM IC6001(72))
HEAD SW PULSE
2
I C SERIAL DATA
(FROM IC6001(16))
(FROM IC6001(71)) HEAD AMP SW
I C SERIAL CLOCK 2
(FROM IC6001(25))
PB(L)
V1 0.27 Vp-p V1 0.27 Vp-p
A B
0.1 V 20 µs 0.1 V 20 µs
VV CHROMINANCE
VIDEO
TUNER VIDEO
NOT USED
J5904
J5903
Q5655 Q5653
Y
15 BUFFER BUFFER LUMINANCE
Y/C
Q5656 Q5657 Q5658
C
SEPA.
BUFFER AMP BUFFER
13 CHROMINANCE
10
Q5662
AMP
FSC(3.58MHz)
PV-DF204/PV-DF2004/PV-DF2004-K/PV-DF274/PV-DF2704/PV-DF2704-K
V1 3.1 Vp-p
1 V 5 ms
TP3501
18
16
P3503
4
VIDEO SP
6
L HEAD
P3503
5 VIDEO SP
P3503 R HEAD
6
4
P3503
VIDEO
13
1
LP/SLP
P3503
L HEAD
2 VIDEO
LP/SLP
P3503
11
R HEAD
3
V1
0.4 Vp-p
C
0.1 V 5 ms
TO VIDEO
SELECTOR
BLOCK
DIAGRAM
VIDEO SIGNAL PATH BLOCK DIAGRAM