Onkyo TX-NR906 Service Manual page 36

A B
SCHEMATIC DIAGRAMS-28 (SD-28)
HD RADIO SECTION
NARF-9118
U43 HD RADIO PC BOARD
1
ANTENNA
FM
AM
RF1 TA48018AF
RF GND
RF2
Q1
AM input
+1.8V
RF3 3 1
RF GND O I
2
RF4
FM input
RF5
RF GND
1
RF GND
+8.5V
2
8.5Vdc
3
GND
+5.0V
4
5Vdc
5 C12
GND
6 10/50
V-LEVEL
7
GND
8
1.8Vdc
9
GND
10
HPPI_SCL
11
HPPI_SDA
12
BK1608LM182
GND
13 R15 47 HD_LRCLK
AFSX0(IIS_LRCK)
L2
14 R19 HD_SCLK
ACLKX0(IIS_SCLK)
47
15
GND BK1608LM182
16 L3 HD_OCLK
AHCLKX0(IIS_MCLK)
R22 470
17 HD_SDO
AXR0_2 (IIS_DATA)
R23 47
18
GND
19 R24 HDIDMRST
RESET
20 47 +3.3V
3.3Vdc
3
21
GND
22 +1.2VHD
1.2Vdc
23 +1.2VHD
1.2Vdc
24
GND
25
AXR1_5
26
Reserved
27
GND
28
L_OUT
29
R_OUT
30
Audio GND
4
DGND
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
NOTE
!
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
5 ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF, 330- 33pF, 331- 330pF, 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
C
STEREO
SD
+8.3V R52
+9V
15
R33
+3.3V
5V
22
DGND
R3 1M
R6
VLEVEL 3
1
10K
DGND
2
R10 0
Q3:A
S1
NJM2903V
1
6 Q3:B
S2 2
7
R14
3
5
4
10K
R18 0
R20
1M
+3.3V
I2S_SCK
I2S_SDA
TA48033AF
Q7
+3.3V R25 +4V_B
3 1
O I
0
DGND
BD7820
Q8
R26 R53 R54
+4V_A
0 1(1W) 1(1W)
D E
C22
102J
C26 R40 R38
10/50 2.2K 2.2K
2 ch DAC
CS4344-CZZR
Q4
104Z
C8
HD_SDO R7 100 1 10
SDIN AOUTR
C7
HD_SCLK R4 2 9
100
DEM/SCLK VA
HD_LRCLK R8 3 8
100
LRCK GND
470/10
HD_OCLK 4 7
R2 100
MCLK AOUTL
5 6
VQ FILT+
10/50
C9
C27
R41
R39
C11 104Z
10/50 2.2K 2.2K
C23
102J
C20
105K
L4
3 1
O I
022K
Q6
TA4805
www.audiodna.sk
F G
+14.9V
R31
NE5532APSR NE5532APSR 22
Q9:A R44 Q10:A
3 3
1 1
1.2K
2 2
R34 R50
6.8K
0
R35 R51
0 6.8K
6 6
7 7
R45
5 5
Q9:B Q10:B
1.2K
R30
22
-14.9V
TX-NR906/NA906
H
+15V 13
-15V 12
AG 11
10
R_OUT 9
8
L_OUT 7
6
HDIDMRST
5
SD 4
STEREO
3
2
I2S_SDA
1
I2S_SCK
+9V 1
2
+4V_B 3
+4V_A 4