Y/C/Audio/Head Amp Block Diagram - Toshiba VTW21FQR Service Manual

Y/C AUDIO
T'TEXT/ Hi-Fi/ HF2
SOUND AMP
HF_COM
HF1
CP4501
9 HF1 (R)
8 HF_COM
7 HF2 (L)
SP-CH1 (R)
6
CYL SP_COM
5
4 SP-CH2 (L)
3 EP/LP-CH1 (R)
2
EP/LP_COM
EP/LP-CH2 (L)
1
SCL
SDA
MICON
H_SW
ENV. DET
V.REC_ST-H
CP4503 Q4607
2 FE HEAD (GND)
FE HEAD (HOT)
1
CP4505
1 AE HEAD (–)
2 AE HEAD (+)
HEAD AUDIO
CONTROL 6 AUDIO REC
5 AUDIO PB
COIL, BIAS OSC
L4503
Q4502
OSC
1
Q4501
3
NORMAL A.
REC ST SW
NORMAL_A
T'TEXT/ Hi-Fi/
SOUND AMP
TV TU_VIDEO
FRONT_V_IN
DEMODULATOR/
21PIN/NICAM
REAR_V_IN
DVD_VIDEO
DVD
D_V_ SYNC
C_SYNC
MICON
MESECAM-M
F-5

Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM

NC
77
P
87
629 FM
TRAP
AGC
86
R
85
91 REC
MUTE
90
89 REC
Fillter
73
HPF
74
80
P
ENV
2MLPF
83
DET
ACC
LINE
AMP
6
AMP
Q4505~Q4507
PB SW P
PRE
AMP
VCA
R
REC
96
EQ
6 98
5
1
Y/C/AUDIO/CCD/HEAD AMP IC
IC4501 HA118225F
8 9
SUB MAIN
LPF
DE-EM
P
P/Q EQ DLIM DEM0
Y-LPF
R
NL
DEM
E MPH
HPF
R
R
FH HPF REC Trap
CLPF1 C-DL
CT1 Trap HiFi Trap
P
Trap
LPF
CK
R
XTAL VCO/OSC
71 82
69 31
X4501
4.433619MHz
33 35
38 40 51 36
37 49 29
V AMP
LPF Y CCD
SQUELCH
GCL
Clear
DO
N.L
SYNC
DE-EM
YLR
GCL V FBC/
VALC
REC+DO
P
GCL
P
Main
Conv1
R
R
Pilot NP-
BPF B.D.
Erase CONV
P
R
Main
C LPF2
Conv2
P
P
R
L-DET
P
Q4606
T'TEXT/Hi-Fi/
BUFFER
Y/C VIDEO
SOUND AMP
28
15
17
19
R
21
V FBC/
VALC
23
26
42 NC
C.K. 43
NC
CCD
45
LPF
46
CCD
55
VCA 57
F-6