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AVR350 SURROUND SOUND RECEIVER
WIRING DIAGRAM POWER PCB
SW PCB
PMAIN PCB RS232 PCB TUNER PCB
RECT PCB
PSU PCB
Toroidal
Transformer
HDMI PCB
CON2 PCB
AUDIO PCB
CON1 PCB
AMP2 PCB AMP1 PCB MULTI PCB
SP401
DSP PCB
MAIN PCB
P/N: 1681-7000-A
VIDEO PCB
VOL PCB
COM PCB
KEY PCB
PHONE PCB LED PCB
- 11 -
1 2 3 4 5 6 7 8
AVR350 SURROUND SOUND RECEIVER
SCHEMATIC DIAGRAM
D D
S-HQ VIEDO
U821 BA7623F
1 8 C957 10u/16V R960
G
GND2 75
SCMAIN2VU 7
3 6 R962
SYMAIN2VU
X803
4 5 C958 470u/10V 75 4.433619MHz U813
VCC RY/Cr
R961 R963 1 48
XTAL 1 R-Y/Cr Output
75 75 C959 C999
+5V
12pF 2 47 BY/Cb
XTAL 2 B-Y/Cb output
C955 C956 DGND X804
47u/16V 103 GND GND
3 46 L818
XTAL 3 SECAMCONT
C960 27uH
12pF 3.57954MHz
GND 4 45
APC Filter 1HDL CONT C839 R990 C8001 C8003 C832
R993
DGND 100u/16V 510R 15p 103 2K R994 10nF
SYNC SEP FILTER
AFC FILTER +9V 5 44
C GND fsc output Fsc
C963 10R
R965 0.01uF WIMA AGND TO U805 PIN19
C967 30K C962 6 43 L815 C943 C8002 R991 R992
2.2u/50V CHROMA input UV/CbCr SW 100uH +5V 33p 10p 1K5 820
2200pF C966
+9V 2.2uF/50V
7 42 C978
V-SEP C VCC C977
R967 C964 AGND
3K C961 100nF 1000u/16V -5V
C +5V C
0.22u/50V 8 41 10nF
C968 Sync input DAC VCC
WIMA R966
GND
4
3
2
1
R972 22nF 3K3
+9V GND 9 40
1K Sync output Y input
C965 100nF C954 U820
10 39 47u/16V TK15420M
R9018 AFC Filter DAC1
1K 1N4148
RGB fromMCU D805 11 38 GND
SYNC GND DAC2 +5V
C953
R968
RGB H SYNC-OFF 330R AGND 47u/16V
Q9011 37
C114 Q9014 12
32 fH VCO Y output
Other L SYNC-ON
GND C114
DGND AGND
X805
5
6
7
8
13 36 R944
B503F30 VP output GND
RGB_8V 75
GND
Y/G1V
GND 14 35
HD output DAC TEST RV803
R959
C951 2K
100
15 34 22u/16V
SCP output SDA O_SD
R969 D804 16 33 R957 R958
C979 U822 NF Dig GND SCL O_CL 10K 470 R985
RYout 5.1K R973 1K
1 30 R970 DGND
R_Y Clam Det.
p R-Y Out 1K
100nF 17 32 RGB _8V
AGND CP / HP input Ys AGND
2 29 BYout GND 8.2K +9V R956
R-Y to CCD B-Y Out C976 RYout 1K
+9V 18 31 R947
C981 100nF SYNC VCC R-Y1 input
C970 100nF WIMA
3 28 C969 220R
B-Y to CCD B-Y Clam Det.
p R981 BYout
1000u/16V 19 30 C975 R955 R943
C980 GND 270k R980 10nF SW VCC B-Y1 input WIMA
R954
100nF 300 300 150
4 27 RY/Cr 47K
R-Y AGC Det. R-Y In C974 -5V B-Y/B1V
100nF C919 100nF GND 20 29 RV804
+9V AGND Y/G output Y1 Input
R983 R986 100nF WIMA 1K
5 26 BY/Cb NF
VCC B-Y In 30K
21 28 C907
C918 100nF R979 B-Y/B output I2C GND
C983 C984 47u/16V
10K R982
47uF/16V 10nF 6 25 Q842 DGND C973 104
Filter Adj. MODE SW2 27K
B 22 27 R953 B
R978 R-Y/R output R-Y2 input 10K
R974 1k A933
C985 C972 104
4
3
2
1
AGND 7 24 R984 R971
100nF S.C.P In MODE SW1 100K
10k 23 26
ADRS SW B-Y2 input U819
C986 8 23 C998 470nF AGND 1K C971 104 AGND TK15420M
B-Y AGC Det. B-Y fromCCD
AGND AGND 24 25
AGND 100nF AGND
SW GND Y2 input
9 22 C997 470nF DGND
PLL Det. R-Y fromCCD TA1270BF +5V
R975 C987 C952
1k 100nF 10 21 47u/16V
WIMA Clock GND
C989
AGND AGND C996 +5V
+5V 100nF 11 20 AGND
5
6
7
8
C988 Clock In Vgg
10uF/16V R942
1uF/16V AGND Q841
150
12 19 C1740 R946 C950
VSS Vout1