Emerson EWV401B - Page 17

L
R
LUMINANCE
SIGNAL PROCESS
MAIN CBA
Video Block Diagram
VIDEO (R)-1 HEAD
VIDEO (L)-1 HEAD
1-8-3 1-8-4 HB3J1BLV
(DECK ASSEMBLY)
V(R)-1
V-COM
V(L)-1
CL253
1
2
3
V(L)-2
V-COM
V(R)-2
4
5
6
JK751
V-OUT
Q391
JK753
FRONT V-IN
TU701
VIDEO-IN
VIDEO-OUT
OSD-
BLUEBACK
OSD-
CHARA-OUT
TP751
V-OUT
6
24
TU701
VIDEO-IN
VIDEO-OUT
6
18
JK752
REAR V-IN
V-AGC
TUNER
FRONT
REAR
R P
R
P
SYNC
SEPA
FBC
Y/C
MIX
CCD 1H
DELAY
R
P
DOC YNR Y/C COMB
CHROMINANCE
SIGNAL PROCESS
IC301
IC501
(Y/C PROCESS)
35
13
88
89
90
91
42
30
3131
30
40
CHARA
MIX
6dB
AMP
ENV
DET
AGC
AMP
HPF
FROM/TO
SERVO/SYSTEM
CONTROL BLOCK
FROM/TO
SERVO/SYSTEM
CONTROL BLOCK
CYLINDER ASSEMBLY
R
L
RF-SW
RF-SW
93
V-ENV
H-A-SW
H-A-COMP
H-A-COMP
TP302
WF2
VIDEO (L)-2 HEAD
VIDEO (R)-2 HEAD
TP301
C-PB
BUFFER
49
H-SYNC
D-V SYNC
C-SYNC
BLUEBACK-ON
BLUEBACK-ON
SP/LP/EP
SP/LP/EP
ROTA
D-V SYNC
C-SYNC
ROTA
34
14
36
16
71
39
59
41
73
TRICK-H
INSEL
D-PB-H
D-PB-H
PICTURE-SEL
PICTURE-SEL
D-V SYNC
C-SYNC
BLUEBACK-ON
BLUEBACK-ON
BLUEBACK
SP/LP/SLP
SP/LP/SLP
C-ROTA
D-V SYNC
C-ROTA
34
14
71
39
59
41
73
TRICK/C-G/APC
TRICK/C-G/APC
INSEL/ST-SL
74
45 47 49 44
Q301
BUFFER
WF5
WF9
WF14
WF1
38
15
94
82
83
84
85
SP
EP
16
D-REC-H
REC/EE/PB
D-PB-H
11
D-REC-H
TYPE B
TYPE A
WF9
WF14
J194
NOTE: The Tuner Unit (TU701) is either type A or type B.
Wave Form will be different. It depends on the type
of tuner used on the unit you are servicing.
REC VIDEO SIGNAL PB VIDEO SIGNAL MODE: SP/REC