Zenith XBV613 Service Manual - Page 31
Tu/if Block Diagram
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UPC - 719192169715
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2. TU/IF BLOCK DIAGRAM A.IN 999 GND CH S/W 2 REG 5V 3 CONTROL 4 V.IN RF AGC 6 NC ENABLE 8 CLOCK DATA AFT A.OUT SIF TU 30V 14 NC V.OUT 1 5 7 9 10 11 12 13 15 16 TU.V.OUT 732 33V 158 AFT 100 3-21 3-22 875 MOD A.IN 61 MOD CTL 107 5V 26 VCR 'H' 971 MOD VEDIO 71 IIC CLK 72 IIC DATA 781 SIF OUT COMBI NTSC
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3-21
3-22
2. TU/IF BLOCK DIAGRAM
A.IN
CH S/W
REG 5V
CONTROL
V.IN
RF AGC
NC
ENABLE
CLOCK
DATA
AFT
A.OUT
SIF
TU 30V
NC
V.OUT
999
GND
100
AFT
732
TU.V.OUT
875
MOD A.IN
61
MOD CTL
107
5V
26
VCR 'H'
971
MOD VEDIO
71
IIC CLK
72
IIC DATA
781
SIF OUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
COMBI
NTSC
158
33V