Sanyo AVM-2550S Training Manual page 62

TV ANT IC101
SIGNAL PROCESSOR
44
BUS
A101
Interface
10
TUNER 43
Q8065
BUFFER
11
Y
VIDEO
38
DET.
Q162
45
C
1ST
40
VIDEO 47
42
1
Q202
BUFFER
EXT V IN
INT V FOR PIP
Q307
BUFFER
K1002
V2 IN
K1001
+9V
V1 IN
IC1001
Y
S1/V1/V2
K1051
SWITCH
S1 IN
C
V1
+9V
IC1002
PIP
COMPO.
VIDEO
SWITCH
+9V
IC1081
MAIN
S1/V1/V2
SWITCH
C1
EXT.V
IC801
CPU
32
BUS SDA
34
BUS SCL
8
TV/AV
12
S1-SW
Q306
MAIN AV1/AV2 5
BUFFER
PIP TV/AV 7
PIP AV1/AV2 6
INPUT MAIN S SELECT 4
FILTER
R1027 R1007
V2
16 15 14 13 12 11 10 9
H L
H L H L
1 2 3 4 5 6 7 8
Y1
C1 C1
R1042
R1041
16 15 14 13 12 11 10 9
H L
H L H L
1 2 3 4 5 6 7 8
C
R1082
R1081
16 15 14 13 12 11 10 9
H L
H L H L
1 2 3 4 5 6 7 8
Y
Y(COMB)
C(COMB)
PIP Signal Processor and TV/AV Switching Circuit
IC8001
Q1071
PIP SIGNAL PROCESSOR
BUFFER
Y in
49
Sync tip
Clamp
C in
51
Bias
15
Vdd/Vss xx
3
Q8097
for test xx
BUFFER
CLK
Q8093 25
2
BUFFER DATA I C
24
I/F
Q8090
ACK
23
BUFFER
INPUT 13
A/D
PIP CVBS IN
FILTER
Sync tip
Q8073 Q8076 8bit
Clamp
BUFFER
BUFF.
Vrt (s) 14
Vrb (s)
15
HD
2
(I C)
HPLL
ADJ-Ysub 40
D/A
Yout-sub 39
8bit
D/A
Cout-sub
37
8bit
ADJ-Csub
38
A/D
Vin (m) 8 Bias
8bit
Vrt (m) 9
Vrb (m) 10
17
RESET
YC
MIX
Q1093,
C
Q1094,
Q1096
Y
15 IC301
COMB
4
Q332
FILTER
13
BUFFER
Q342
BUFFER
BAND PASS
LPF
FILTER
Q341
Q343
BUFFER
BAND
PASS
Q216
SW
INVERT.
– 59 –
CSYNC(s) BGP(s)
SCK /TEST1 /TEST0
21 22 20
V-chip
RAM (1H)
data slicer
Y 6
Luma
Delay
Y
Clamp
Y/C SEP
Vert-filter
(LPF, BPF)
Sync Timing Gen
&
AFC
Sep (Decode)
Multiplexer
B–Y 6
C
Demod Tint R–Y
6
Phase
Select Y
B–Y
R–Y
4
fsc
Delay 6 Y
Delay Delay
RAM
MIX 6 B–Y
LPF 96Kbits
6 R–Y
4 &MPY
fsc
Level
Detect
Burst Data Phase
Sampling Detect
VCXO
Lock/Free-run
Driver
2
via I C
30 28 29 31
MCK
BGP(m) fsc SWM
/TEST2
/TEST3 /TEST4
Y-PIP
47
C-PIP
45
Bias 43
C-PIPin
Back Porch
41 Y-PIPin
Clamp
SWMG
34
/TEST7
Timing Gen
(Memory
Cont)
VD
/CSYNC
33
/TEST6
HD
32
/TEST5
FILTER
4
5 BIAS
4
fsc
3 VCXO in
VCXO
2 VCXO out