Harman Kardon HK 990 Service Manual ▷ View online
99
WM_BITCLK
SDATAR1
WM_SDATA
WM_LRCLK
WDCLK
I2C_SCL
SDATAL2
SDATAL1
SDATAR2
SRC_SDATA
BITCLK
SRC_BITCLK
SRC_LRCLK
I2C_SDA
DAC_L
SRC_AESOUT
ADC_LRCLK
ADC_BITCLK
ADC_SDATA
CS_AD1955_1#
CS_AD1955_2#
CS_WM8740#
MUTE_OUT
SDO
SCK
DAC_R
I2C_SCL
I2C_SDA
RST_SRC#
RST_AD1955#
MUTE_LISTEN#
CLK_24_MHZ_4
CLK_24_MHZ_2
CLK_24_MHZ_3
CLK_24_MHZ_5
SRC_LOCK#
SUB_SEL
RST_SUB#
SRC_INT#
TAPE_SEL
TAPE_SEL
SDATAR1
WM_SDATA
WM_LRCLK
WDCLK
I2C_SCL
SDATAL2
SDATAL1
SDATAR2
SRC_SDATA
BITCLK
SRC_BITCLK
SRC_LRCLK
I2C_SDA
DAC_L
SRC_AESOUT
ADC_LRCLK
ADC_BITCLK
ADC_SDATA
CS_AD1955_1#
CS_AD1955_2#
CS_WM8740#
MUTE_OUT
SDO
SCK
DAC_R
I2C_SCL
I2C_SDA
RST_SRC#
RST_AD1955#
MUTE_LISTEN#
CLK_24_MHZ_4
CLK_24_MHZ_2
CLK_24_MHZ_3
CLK_24_MHZ_5
SRC_LOCK#
SUB_SEL
RST_SUB#
SRC_INT#
TAPE_SEL
TAPE_SEL
DSP & Oscillator
DSP & Oscillator
DSP & Oscillator
SCK
SDATAR2
WDCLK
CS_AD1955_2#
SDO
CLK_24_MHZ_2
BITCLK
SDATAL1
SDATAL2
CLK_24_MHZ_3
CS_AD1955_1#
SDATAR1
DAC_R
RST_AD1955#
BITCLK
DAC_L
SCK
SDO
RST_AD1955#
WDCLK
SDATAR2
WDCLK
CS_AD1955_2#
SDO
CLK_24_MHZ_2
BITCLK
SDATAL1
SDATAL2
CLK_24_MHZ_3
CS_AD1955_1#
SDATAR1
DAC_R
RST_AD1955#
BITCLK
DAC_L
SCK
SDO
RST_AD1955#
WDCLK
DAC
DAC
DAC
SRC_INT#
CLK_24_MHZ_4
RST_SRC#
I2C_SCL
SRC_SDATA
SRC_LOCK#
SRC_LRCLK
SRC_BITCLK
ADC_LRCLK
ADC_BITCLK
I2C_SDA
ADC_SDATA
SRC_AESOUT
CLK_24_MHZ_5
CLK_24_MHZ_4
RST_SRC#
I2C_SCL
SRC_SDATA
SRC_LOCK#
SRC_LRCLK
SRC_BITCLK
ADC_LRCLK
ADC_BITCLK
I2C_SDA
ADC_SDATA
SRC_AESOUT
CLK_24_MHZ_5
Digital Inputs
Digital Inputs
Digital Inputs
SDO
SCK
CS_WM8740#
CLK_24_MHZ_4
RST_SUB#
WM_BITCLK
WM_LRCLK
WM_SDATA
MUTE_OUT
MUTE_OUT
MUTE_LISTEN#
SUB_SEL
SCK
CS_WM8740#
CLK_24_MHZ_4
RST_SUB#
WM_BITCLK
WM_LRCLK
WM_SDATA
MUTE_OUT
MUTE_OUT
MUTE_LISTEN#
SUB_SEL
Subwoofer DAC
Subwoofer DAC
Subwoofer DAC
100
RS
T
_DS
P
#
T
PS_OU
T
RS
T
_DS
P
#
IC
S_VD
D
R
65
47R
R122
10K
R123
10K
C
54
10pF
C
5
2
DNE
R
110
10K
R
74
47R
R
75
47R
C9
5
100nF
L3
22uH
I/
O0
4
I/
O1
5
I/
O2
6
I/
O3
7
I/
O4
9
I/
O5
10
I/
O6
11
I/
O7
12
VDD
16
VSS
8
A0
1
A1
2
A2
3
SCL
14
SDA
15
INT
13
U2
0
P
C
A
9554A
P
W
R
69
27R
R
67
27R
R108
10K
R109
10K
XTAL
_
IN
16
XTAL
_
OUT
1
E
NAB
L
E
_
1
15
E
NAB
L
E
_
2
2
BCL
K
0
4
BCL
K
1
6
BCL
K
2
8
BCL
K
3
10
BCL
K
4
12
BCL
K
5
14
VDD
9
VDDO
5
VDDO
13
GND
3
GND
7
GND
11
U1
3
IC
S
83905A
G
T
R
72
47R
R
70
47R
R
62
27R
R
73
47R
R
63
27R
R107
10K
C6
7
100nF
R
66
27R
C6
2
100nF
C
105
100nF
R
112
10K
C
53
10pF
S
P
I0_S
C
S
/
I
2C
1_S
C
L
4
RE
SE
T_
N_
DSP
3
S
P
I0_C
L
K
/
I
2C
0_S
C
L
5
SP
I0
_
SIM
O
6
S
P
I0_S
0M
I /
I
2C
0_S
D
A
7
CL
K
IN
9
S
P
I0_EN
A
/
I
2C
1_S
D
A
15
AF
SR0
17
AC
L
KR
0
18
A
X
R
0[
8]
/
A
X
R
1[
5]
/
S
P
I1_S
O
M
I
19
A
X
R
0[
9]
/
A
X
R
1[
4]
/
S
P
I1_S
IM
O
20
AF
SX1
22
AC
L
KX1
23
A
X
R
0[
13]
/
A
X
R
1[
0]
24
A
X
R
0[
12]
/
A
X
R
1[
1]
25
AF
SX0
27
AC
L
KX0
28
A
X
R
0[
0]
29
A
X
R
0[
1]
30
AM
UTE
0
32
AHC
L
KR
0
/
AHC
L
KR
1
49
A
X
R
0[
14]
/
A
X
R
2[
1]
51
A
X
R
0[
15]
/
A
X
R
2[
0]
52
A
X
R
0[
11]
/
A
X
R
1[
2]
56
A
X
R
0[
10]
/
A
X
R
1[
3]
57
AHC
L
KOUT
59
A
X
R
0[
2]
61
A
X
R
0[
3]
62
A
X
R
0[
4]
11
A
X
R
0[
5]
12
A
X
R
0[
6]
13
A
X
R
0[
7]
14
GND
8
GND
16
GND
21
GND
26
GND
31
VDD33
1
VDD33
2
U1
8
(2*16P
2.
54)
*2 T
w
in-
R
o
w
S
o
ck
et
(180)
C6
1
100nF
R106
10K
C6
5
100nF
R
113
10K
C
55
4.
7pF
Y2
24.
576M
H
z
R
68
27R
R
64
47R
R
76
47R
R
77
47R
C6
9
100nF
+3.
3V
+5V
-15V
A
+15V
A
+5V
+3.
3V
+3.
3V
+3.
3V
+3.
3V
+3.
3V
+3.
3V
+3.
3V
WM
_
B
IT
C
L
K
SDATAR1
W
M
_
S
DATA
W
M
_
L
RCL
K
WD
C
L
K
I2
C_
SCL
SDATAL
2
SDATAL
1
SDATAR2
SRC_
SD
A
T
A
BIT
CL
K
SRC_
BIT
CL
K
SRC_
L
RCL
K
I2
C_
SDA
DAC
_
L
SRC_
AE
SOUT
ADC
_
L
R
C
L
K
ADC_
B
ITCL
K
ADC
_
S
DATA
C
S
_A
D
1955_1#
C
S
_A
D
1955_2#
C
S
_W
M
8740#
SUB_
M
UTE
_
OUT
SDO
SCK
DAC
_
R
I2
C_
SCL
I2
C_
SDA
RST
_
SRC#
R
S
T
_A
D
1955#
M
UTE
_
L
IS
TE
N#
C
L
K
_24_M
H
Z
_4
C
L
K
_24_M
H
Z
_2
C
L
K
_24_M
H
Z
_3
C
L
K
_24_M
H
Z
_5
SRC_
L
O
CK
#
SUB_
SE
L
RST
_
SU
B#
SRC_
IN
T
#
SM
D
AD1955 (
R
)
AD1955 (
L)
C
o
n
n
e
ct
io
n
s
t
o
A
D
19
55 L
&
R
C
o
n
n
e
ct
io
n
s t
o
W
M
87
4
0
W
M
8740 & SRC4392
Et
her
net
HRS L
in
k
1
2
4
3
5
6
8
7
J5
2*4P
2.
0(
90)
2
4
6
8
10
12
14
16
18
20
22
24
26
28
1
3
5
7
9
11
13
15
17
19
21
23
25
27
J6
2*14P
2.
0(
90)
C
104
47uF
/16V
C6
3
47uF
/25V
C6
0
47uF
/25V
OUT
2
IN
3
GND
1
U1
5
A
M
S
1117-
3.
3
SRC4392
R5
OP
E
N
TAP
E
_
SE
L
TAP
E
_
SE
L
FB
1
F
B
0805
101
-
+
2
3
4
8
1
U
16A
O
PA
2134U
A
DVDD
1
AVDD
15
AGND
10
DGND
28
OUT L
+
18
OUT L
-
17
OUT R+
11
OUT R-
12
ZE
R
O
_
L
21
DSD_
RDATA
8
DSD_
P
HASE
9
L
RCL
K
/EF
_
W
CL
K
2
BCL
K
/EF
_
BCL
K
3
SDATA/
EF
_
L
DATA
4
MC
K
27
CL
ATCH
25
CCL
K
26
CDATA
24
DSD_
SCL
K
6
DSD_
L
DATA
7
EF
_
R
DATA
5
RST
23
ZE
R
O
_
R
20
MU
T
E
22
AGND
19
FI
L
T
B
16
IREF
14
FI
L
T
R
13
U2
3
A
D
1955A
R
S
R9
1
1K
C
102
100n
F
DVDD
1
AVDD
15
AGND
10
DGND
28
OUT L
+
18
OUT L
-
17
OUT R+
11
OUT R-
12
ZE
R
O
_
L
21
DSD_
RDATA
8
DSD_
P
HASE
9
L
RCL
K
/EF
_
W
CL
K
2
BCL
K
/EF
_
BCL
K
3
SDATA/
EF
_
L
DATA
4
MC
K
27
CL
ATCH
25
CCL
K
26
CDATA
24
DSD_
SCL
K
6
DSD_
L
DATA
7
EF
_
R
DATA
5
RST
23
ZE
R
O
_
R
20
MU
T
E
22
AGND
19
FI
L
T
B
16
IREF
14
FI
L
T
R
13
U1
9
A
D
1955A
R
S
R9
9
1K
C7
4
100n
F
C8
9
100n
F
C9
8
100n
F
C7
8
1u
F
/50V
(Po
ly
)
R
119
3.3K
-
+
6
5
7
U
22B
O
P275G
S
C9
6
1u
F
/50V
(Po
ly
)
R9
8
2.2K
C8
8
1n
F
(po
ly
)
R
103
680R
R
105
22K
1
2
3
Q6
2S
A
1035
R
114
2.7K
C9
9
2A
221J
C9
7
100n
F
R
116
1K
R
100
2.7K
R8
7
22K
R8
9
2.7K
-
+
2
3
4
8
1
U
21A
O
PA
2134U
A
R8
8
560R
1
2
3
Q5
2S
A
1035
R9
5
680R
-
+
6
5
7
U
17B
O
P275G
S
-
+
6
5
7
U
16B
O
PA
2134U
A
C9
2
100n
F
C9
0
100n
F
C8
0
100n
F
R8
6
2
.7
K
R8
3
47K
-
+
6
5
7
U
21B
O
PA
2134U
A
R9
0
2.2K
R9
3
2.7K
C
100
1n
F
(po
ly
)
R
101
47K
R9
2
47K
C7
9
100n
F
R
117
47K
R
111
560R
R9
4
3.3K
R8
2
2.7K
R
120
680R
C7
6
220pF
(N
PO
)
-
+
2
3
4
8
1
U
22A
O
P275G
S
C
101
100n
F
C7
1
1n
F
(po
ly
)
1
2
3
Q8
2S
A
1035
R8
1
1K
C8
1
2A
221J
R
115
2.2K
C9
3
220pF
(N
PO
)
-
+
2
3
4
8
1
U
17A
O
P275G
S
C8
4
100n
F
C8
7
2A
221J
R9
6
330R
R8
4
3.3K
C8
3
100n
F
C7
2
100n
F
C7
5
100n
F
R8
5
680R
R
102
3.3K
R7
9
2.7K
C8
2
1n
F
(po
ly
)
C7
0
2A
221J
R
104
2.7K
R8
0
2.2K
R9
7
2.7K
1
2
3
Q7
2S
A
1035
C7
3
100n
F
C9
1
100n
F
R
121
330R
R
118
2.7K
+5
VA
+
15V
A
+
15V
_R
+
15V
_L
+
15V
_R
+5
V
+
15V
_L
-15V
A
+
15V
_L
+
15V
_R
+
15V
_L
+5
V
+
15V
_R
+5
VA
SCK
SDATAR2
WD
C
L
K
C
S
_A
D
1955_2#
SDO
C
L
K
_24_M
H
Z
_2
BITCL
K
SDATAL
1
SDATAL
2
C
L
K
_24_M
H
Z
_3
C
S
_A
D
1955_1#
SDATAR1
DAC_
R
R
S
T
_A
D
1955#
BITCL
K
DAC_
L
SCK
SDO
R
S
T
_A
D
1955#
WD
C
L
K
C7
7
47u
F
/16V
(T
an
)
C9
4
47u
F
/16V
(T
an
)
C1
10u
F
C3
5
10u
F
C8
100n
F
+5
VA
+
15V
A
C3
4
100n
F
OUT
2
IN
3
GND
1
U1
1
A
M
S
1117-5.0
C4
5
100n
F
C4
7
100n
F
C6
6
10u
F
C8
6
10u
F
C6
8
47u
F
/16V
R6
10R
C8
5
47u
F
/16V
R7
10R
+
15V
_L
-15V
_L
+
15V
_L
+
15V
_L
-15V
_L
-15V
_L
+
15V
A
-15V
A
C
103
47u
F
/16V
R8
10R
C
106
47u
F
/16V
R9
10R
+
15V
_R
-15V
_R
+
15V
_R
+
15V
_R
-15V
_R
-15V
_R
FB
3
F
B
0805
C
109
47u
F
/25V
FB
4
F
B
0805
C
110
47u
F
/25V
DAC+5
V_
L
DAC+5
V_
L
DAC+5
V_
R
DAC+5
V_
R
C
117
100n
F
(N
PO
)
C
118
100n
F
(N
PO
)
C
116
100n
F
(N
PO
)
C
115
100n
F
(N
PO
)
102
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