Cyrus AV5 Service Manual page 27

1
6dB gain, 45kHz -3dB Butterworth Sallen & Key LPF
R607 R613
codecDACLeft
5k1 10k
G
R601
C607
100k
470pF
2nd order 45kHz filters
Butterworth
GND GND
R608 R614
codecDACRight
5k1 10k
F
R602
C608
100k
470pF
GND GND
R609 R615
codecDACLeftSurround
E 5k1 10k
R603
C609
100k
470pF
GND GND
R610 R616
codecDACRightSurround
D
5k1 10k
R604
C610
100k
470pF
GND GND
R611 R617
codecDACCentre
C
5k1 10k
R605
C611
100k
470pF
GND GND
R612 R618
B codecDACSub
3k6 7k5
R606
C612
100k
220nF
GND GND
Rifa MMC Rifa MMC
A
Description:
DAC output filters, volume control and buffers.
1
2 3
IC601A
BA15532
3
C601
1
2
10uF
C613
-6V
470pF
R641 2k2
GND
R642 2k2
TapeOutLeft
+6V
5 C602
7
6
10uF
IC601B
C614
-6V
BA15532
470pF
R643 2k2
GND
spi SCK
R644 2k2
VOL_CE
TapeOutRight
IC602A
BA15532
GND
3
C603
1
2
10uF
C615
-6V
470pF
R645 2k2
GND
R646 2k2
+6V
5
C604
7
6
10uF
C616 IC602B
BA15532
470pF
R647 2k2
GND
R648 2k2
IC603A
BA15532
3 C605
1
2
10uF
C617
-6V -6V
470pF
R649 2k2
GND
spi SCK
R650 2k2
VOL_CE
+6V
GND
5
C606
7
6
10uF
IC603B
C618
BA15532
220nF
R651 2k2
GND
R652 2k2
2 3
4
5.6dB gain
IC604A
OPA2604
3
2
-12VAop
IC608
1 20
R619
GND 2 OUT 2
2k2
2 19
IN 2 VSS 1 -6V
3 18
GND AC IN 3
+12VAop
GND
4 17
IN 1 GND 3
5
5 16
GND 1 OUT 3
6
6 15
OUT 1 VDD 2 +6V
IC604B
7 14
VSS 2 GND AC
OPA2604
8 13
GND DIG VDD 1 +6V
9 12
CLOCK Q
R620
10 11
2k2
SHIFT DATA spi MOSI
LM1973M
IC605A
GND
OPA2604
GND
3
2
Three channel
76dB attenuators
-12VAop
R621
2k2
+12VAop
GND
5
6
IC605B
OPA2604
IC609
1 20
R622
GND 2 OUT 2
2k2
2 19
IN 2 VSS 1 -6V
3 18
GND AC IN 3
IC606A
GND
4 17
OPA2604
IN 1 GND 3
3
5 16
GND 1 OUT 3
2
6 15
OUT 1 VDD 2 +6V
7 14
VSS 2 GND AC -12VAop
8 13
GND DIG VDD 1 +6V
9 12
CLOCK Q
R623
10 11
2k2
SHIFT DATA
LM1973M
+12VAop
GND
GND
5
6
IC606B
OPA2604
R624
2k2
GND
4
5 6
C619
1
FilteredDACLeft
10uF
R635
R625 22k
2k
GND
C620
7
FilteredDACRight
10uF
R636
R626 22k
2k
GND
C621
1
FilteredDACLeftSurround
10uF
R637
22k
R627
2k
GND
C622
7
FilteredDACRightSurround
10uF
R638
R628 22k
2k
GND
C623
1
FilteredDACCentre
10uF
R639
R629 22k
2k
GND
C624
7
FilteredDACSub
10uF
R640
R630 22k
2k
GND
Issue: 0 O c
Sheet
Huntingdon, United Kingdom.
Drawn date: 9-Apr-1999
6
This drawing is the intellectual property of Cyrus Electronics Ltd.
Print date: 2-Apr-2008
Sheet 6 of 13 Title: Digital AV Decoder
5 6
7
T601
PZTAS42
+12VAop +6V
R631
2k4
R633
C625 C627
3k
47nF 10uF
R634
GND
C626 C628
3k
47nF 10uF
R632
2k4
-12VAop -6V
T602
PZTA92
+6V
C629 C631 C633 C635 C637
47nF 47nF 47nF 47nF 47nF
GND
C630 C632 C634 C636 C638
47nF 47nF 47nF 47nF 47nF
-6V
+12VAop
C639 C641 C643
47nF 47nF 47nF
GND
C640 C642 C644
47nF 47nF 47nF
-12VAop
Drawn by: Steve Sells
Approved by:
File Name:
Path: M:\IanS\temp\temp.ddb - Documents\SC011691.SCH
7
G
F
E
D
C
B
A