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MAIN SIGNAL PATH IN REC MODE MAIN SIGNAL PATH IN PLAYBACK MODE
IC4501
2
42 IIC CLK S TO/FROM
IIC BUS SYSTEM
INTERFACE CONTROL
53 43 IIC DATA S
57
AV1 R IN
9
AV2 R IN INPUT
10
SELECT
SWITCH
RCH
AGC
&
SWITCH
AV1 L IN
14 FROM
VCO 45 FSC LUMINANCE &
AV2 L IN INPUT F0 CHROMINANCE
15
SELECT
SWITCH
LCH
QR4503 OUTPUT
AV2 R OUT MUTE 51 SWITCH SELECT
RCH SWITCH
RCH
AV2 R IN
QR4504
AV2 L OUT MUTE 52 SWITCH
LCH
PNR RCH FROM
AV2 L IN 27 AUDIO H.SW SYSTEM
CONTROL
FM MODULATOR/
OUTPUT DEMODULATOR
SELECT
SWITCH
LCH
LPF
4 PNR LCH
3
1 BPF
30
8
FROM
BPF PB60Hz H SYSTEM
CONTROL
13 PREAMP QR4507
& 29
SWITCH
TW4501
P3502
24
8 L
P3502 Hi-Fi
IC3001 + AGC 21
9
AUDIO
HEAD
P3502 R
22
10
SW 78 62
GAIN
LPF
75
FM MODULATOR/
DEMODULATOR
71
A.HEAD(W) 2 ALC NORMAL
73 61 SELECT
SWITCH
TO/FROM 8 AGC
AC HEAD &
SWITCH
A.HEAD(R) 4 7
NV-VHD1B/EC/EE/F
VCR AUDIO BLOCK DIAGRAM
NV-VHD1B/EC/EE/F
VCR AUDIO BLOCK DIAGRAM