Panasonic PV-D4742 Service Manual page 144

VIDEO SIGNAL PATH BLOCK DIAGRAM
MAIN C.B.A.
UHF/VHF TUNER/TV
DEMODULATOR UNIT
RF
23 VIDEO
V1
1.0 Vp-p
0.5 V 20 µs
VIDEO
IN 1
J3013
OPERATION C.B.A.
P6301 P6301
VIDEO
IN 2 6 6
A V1
0.25Vp-p
(FROM IC6001(24))
V-LOCK PULSE
0.1 V 20 µs (TO IC3801(33))
VIDEO
B V1
0.21Vp-p
NOT USED
0.1 V 20 µs
C V1 1 Vp-p
0.5 V 20 µs
D
V1 1.0 Vp-p
0.5 V 20 µs
E V1 0.3 Vp-p
20 µs
0.1 V
F V1 1 Vp-p
0.5 V 20 µs
C
P3001
DVD VIDEO
11
D
P3001
DVD S-Y/Y
FROM DVD
9
BLOCK DIAGRAM
E
P3001
DVD S-C/PR
7
F
P3001
DVD PB
13
V1 0.52 Vp-p V1
0.2 V 20 µs 0.2 V
VIDEO 5
IC3101
CCD 1H DELAY
5 4
IC3001
TP3103 TP3101
(VIDEO SIGNAL PROCESS/HEAD AMP)
9 7
TUNER
100
REC
AGC
98
LINE 1 REC/PB LUMINANCE
96
PB
LINE 2 SIGNAL PROCESS
REC/PB CHROMINANCE
SIGNAL PROCESS
Y/C MIX
ART V/H MIX
93 5 90 92 83
A B
IC3201 (CNR)
Q3875
BUFFER IC3101
1 8 19
Q3002,
BUFFER CCD 1H DELAY
(WITH ADVANCE)
Q3003
49
(WITH CNR)
NOT USED
OSD
IC6001 CHARACTER
MIX
47
Q3007,Q3008 Q3009
AMP BUFFER
Q3601, Q3604 Q3607
NOT USED
AMP BUFFER
R3658
Q3602, Q3605 Q3608
NOT USED
AMP BUFFER
R3661
Q3603, Q3606 Q3609
NOT USED
AMP BUFFER
R3660
V1
0.69 Vp-p 0.21 Vp-p
20 µs 0.1 V 5 ms
(WITH SQPB)
Q3151,Q3152
NOT USED
SQPB
(FROM IC6001(98)) ROTARY SW
EQUALIZER
(TO IC6001(85)) ENVELOPE VOLTAGE
24 26 29 28 20
VHS S-VHS
AT ENVELOPE
DETECT
PB-Y
REC-Y
Y/C
MIX
REC-C
PB-C
SP
2
I C
CONTROL
REC
81 78 77 87 88 14 21
OSC
X3010
CHROMA
(3.58MHz)
NOISE
5
REDUCTION
Q3402
AMP
10
NOT USED
NOT USED
Q3006
BUFFER
Q3004,
Q3005
J3001
AMP
2
1
J3012
NOT USED
SW3001
SELECT
COMPONENT
S-OUT
Q3610
BUFFER
J3609 Q3615
Q3611
BUFFER
Q3612
BUFFER
Q3613
BUFFER
Q3614
BUFFER
REC VIDEO SIGNAL PB VIDEO SIGNAL
37
38
L
39
R
40
42
43
R
LP/
44
L
SLP
LP/
SP
SLP
45
PB
31 50 49
(FROM IC6001(23)) HEAD SW PULSE
TP3002 (FROM IC6001(99)) HEAD AMP SW
2
(TO/FROM IC6001(17)) I C SERIAL DATA
(FROM IC6001(18)) I 2 C SERIAL CLOCK
V1 0.24 Vp-p V1 2.20 Vp-p
5 ms 1 V 20 µs
0.1 V
IC3002 (SW)
DVD
Q3001 TP3001
BUFFER
15
VCR
10
Q3011
(FROM IC6001(58))
DVD SELECT(H)
SW +12V
Q3616
(FROM IC6001(31))
Q3617
VIDEO MUTE(H)
NOT USED
CYLINDER UNIT
P3501 PIN
6 6 VIDEO SP
L HEAD
P3501 PIN
5 5
VIDEO SP
P3501 PIN
R HEAD
4 4
P3501 PIN
VIDEO
3 3
LP/SLP
P3501 PIN R HEAD
2 2 VIDEO
LP/SLP
P3501 PIN
L HEAD
1 1
V1
1.35 Vp-p
0.5 V 5 ms
V1 1.54 Vp-p
0.5 V 5 ms
VIDEO OUT
Y
S-VIDEO OUT
C
Y
PB/CB
PR/CR
VIDEO SIGNAL PATH BLOCK DIAGRAM
PV-D4742