JAMO DVR 50 Service Manual page 15

A
1
/Audio
+3.3VD
R501
4K7
SCL
2
+3.3VD
R502 R503
4K7 3K3
SDA
/INT
3
/RESET
SEL_A
SEL_B
/MUTE
R505 R506
4K7 4K7
4
/ERR_RCVY
SPDIF_ERR
/SPDIF_ERR_SENSE
+3.3VD
+3.3V
+2.5V
5
GND
A capacitor pair (1uF and 0.1uF) must be placed at each power pin
B
+2.5VD
R512
10K
+3.3VD
R529 R530 R513
3K3 3K3 3K3
7
8
9
10
11
+2.5VD
12
13
14
15
16
17
+2.5VD
R517
10K
+2.5VD
R518
R504 10K
3K3
+3.3VD +3.3VD
R507 R508 R509
4K7 1K U502A 1K
74HC74
2 5
D Q
D503
BAV99
3 6
CLK Q
Amplifier error signal FF
C516
100nF
+2.5VD
L501
BEAD
C501 C502 C503 C504 C505 C506 C507
+ + + +
100nF 100nF 100nF
1uF/50V 1uF/50V 1uF/50V 1uF/50V
C D
R514 R515 R516
3K3 4K7 4K7
GPIO10
U501
39
SCL AUDATA2
38
GPIO7 DC
37
GPIO6 DD
36
GPIO5 RESET
35
GPIO4 AGND
34
VD2 CS493264-CL VA
33
DGND2 FILT1
32
GPIO3 FILT2
31
GPIO2 CLKSEL
30
GPIO1 CLKIN
29
GPIO0 LRCLKN2
R519 R520
10K 200K
C513
10nF
R510 R511 R527
1K U502B 1K
1K
74HC74
12 9
D Q
D501
BAV99
11 8
CLK Q
R526 4K7
Q501 Q502
2N3904 C517 C518 C519
2N3904
100nF 100nF 100nF
D502
BAV99
R528
+2.5VA
4K7
Revision history
C508 C509 3.0: GPIO5 used to reset amp, R528 added.
+
100nF 3.0: Ports DET_AUX, DET_VCR, DET_TV is removed.
1uF/50V 3.0: R529 & R530 added.
3.0: D503 added.
3.0: R508-R511 & R527changed to 1K.
3.0: C516-C519 added.
Schematic diagram - Audio board 5/10
E
R521
33R R522
33R
R523
33R
R524 33R
GPIO10
U503A
15
G
1
A/B
+2.5VA
2
1A
C512
3 4
1B 1Y
2.2uF/50V
5
2A
6 7
2B 2Y
11
3A
10 9
3B 3Y
14
4A
C514
13 12
4B 4Y
220pF
74LVC157A
R525
33R
+3.3VD +3.3VD
U502C
C510 14
Vcc
100nF
7
Vss
74HC74
Components having special characteristics or critical for safety are
Title
identifi ed by Audio Processing Board mark and must be replaced with components
specifi ed by the manufacturer.
Size Document Number
A3 DSP
Date: Wednesday June 04 2003
Schematic diagram is subject to change without notice.
F
EQ_MCLK
EQ_SCLK
EQ_LRCLK
EQ_DATA1
EQ_DATA2
EQ_DATA3
DAC_MCLK
DAC_LRCLK
DAC_DATA
DAC_SCLK
DIT_MCLK
DIT_SCLK
DIT_LRCLK
DIT_DATA
DIR_LRCLK
DIR_SCLK
DIR_DATA
DIR_MCLK
ADC_LRCLK
ADC_SCLK
ADC_DATA
ADC_MCLK
MCLK
CLK_SEL
/A_RESET
U503B
C511 16
Vcc
100nF
8
Vss
74LVC157A
R e v
3.0
Sheet 5 o f 11
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