Y/C Block Diagram - Zenith XBV243 Service Manual

VR168 - 923-03485
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XBV243 Y/C Block Diagram
(PB Mode)
79 78 73 75 63 62 69
S y s t e m V . H / S W 3 0 8 1
( F R O M u - C O M )
X-tal Serial Cont
V . E N V
8 4 VCO/OSC interface
( T O u - C O M )
8 6
R E C - A M P
S P C H 2
S P C H 2
8 7
8 8
R E C - A M P
S P C H 1
S P C H 1
8 9
CTL Trap
ACC C LPF DEALY
2M LPF fh Trap
HIFI Trap
9 1
R E C - A M P
E P C H 2
E P C H 2
9 2
DEMO
TRAP FM AGC P.EQ G.EQ D LIM
S LPF
9 3
R E C - A M P
E P C H 1
E P C H 1
9 4
I C 301
H A 1 18717F
22 13
(REC Mode)
60 58 35
C-CCD
46
44
39
Y-CCD
42
MIX V. OUT
52
AMP (TO u-COM)
Main APC/ACC
VCA CCD LPF
Conv2 DET
D-V SYNC
SQUEL CH 51
(FROM u-COM)
L- DET BPF BD C.K
Main
CLEAR
Conv1
SYNC
NL
Main
Y LPF
De-eMPH
De-Empf C-SYNC
SYNC SEP 50
(TO u-COM)
Sharpness FBC
56
YNR NC
Video ALC
CONTROL
LPF LPF
14 18 19 23 24 26 21
6-7
System
System
System
D35E COMBO - DIAGRAMS