Harman Kardon HK 990 Service Manual ▷ View online
R36
10K
10K
R37
9.1K1%
C50
100nF
100nF
C15
100nF
100nF
C47
100pF(NPO)
R33
1.78K1%
1.78K1%
C12
2.2uF
2.2uF
C49
100nF
C2
100nF
100nF
R12
12K1%
C55
100pF(NPO)
R71
680R
680R
+
C53
47uF16V
47uF16V
C54
680pF(NPO)
+
C21
47uF/25V
R43
10K
10K
R44
9.1K1%
+
C45
47uF16V
47uF16V
R46
1.78K1%
1.78K1%
R11
18K1%
18K1%
+
C1
10uF/50V
R68
680R
680R
R3
4
5.1K
1%
P
VDD
1
RX0
2
I2C
3
RX1
4
RX2
5
RX3
6
INT
7
VOUT
8
CDTO/TEST
9
LRCKB
10
BICKB
11
SDTOB
12
OLRCKA
13
ILRCKA
14
BICKA
15
SDTOA
16
MCKO
17
TVDD
18
DVS
S
19
DVDD
20
XTI
21
XTO
22
TX
23
MCLK2
24
PD
25
CDTI/SDA
26
CCLK/SCL
27
CS/TEST
28
SDTIA1
29
SDTIA2
30
SDTIA3
31
SDTIB
32
HVDD
33
HVS
S
34
HPR
35
HPL
36
MUTET
37
LOUT2
38
ROUT2
39
LOUT1
40
ROUT1
41
VCOM
42
AVDD2
43
AVS
S
2
44
LISEL
45
LOPIN
46
ROPIN
47
RISEL
48
AVS
S
1
49
AVDD1
50
LIN1
51
RIN1
52
LIN2
53
RIN2
54
LIN3
55
RIN3
56
LIN4
57
RIN4
58
LIN5
59
RIN5
60
LIN6
61
RIN6
62
PV
SS
63
R
64
U2
AK4683
AK4683
C4
6
680pF(N
P
O
)
R4
8
5.1K
1%
R6
18K1%
18K1%
C5
1uF
1uF
+5V
A+5V
+15VA
-15VA
SRC_AESOUT
CLK_24MHZ
RST_AK4683#
SDA_5V
SCL_5V
SPDIF_RECORD
REC_out_L
REC_out_R
INT_AK4683
I2C pin :Control mode select pinL = 4 wi re serial, H = I2C
2
3
1
4
U7A
NJM2068
6
5
7
8
U7B
NJM2068
C101
100nF
C99
100nF
100nF
+15VA
-15VA
6
5
7
8
U11B
NJM5532M
2
3
1
4
U11A
NJM5532M
R117
10K1%
R121
10K1%
10K1%
R116
10K1%
R120
10K1%
R115
10K1%
R114
10K1%
R118
10K1%
R119
10K1%
LIN+
LIN-
RIN+
RIN-
GND
GND
T
O
X
L
R BO
RD
13
9
11
K8B
JRC-27F1005-M-555
JRC-27F1005-M-555
4
6
8
K8A
JRC-27F1005-M-555
JRC-27F1005-M-555
13
9
11
K9B
JRC-27F1005-M-555
JRC-27F1005-M-555
4
6
8
K9A
JRC-27F1005-M-555
JRC-27F1005-M-555
1
2
3
4
CN2
4P(2.0)
TO P
HONO B
OAR
D
PHONO_L
PHONO_R
R143
100R
C116
47uF16V
47uF16V
R145
100R
C115
47uF16V
R141
100R
C112
47uF16V
R142
100R
C113
47uF16V
47uF16V
XLR_L
XLR_R
R_IN1
L_IN1
L_IN1
R_IN1
P[2]
P[2]
P[4]
P[4]
P[4]
P[4]
P[1,2]
P[1,2]
P[1,2]
P[2]
P[2]
P[2]
P[2]
P[2]
P[2]
P[4]
P[4]
+
C107
10uF/50V
+
C104
10uF/50V
+
C106
10uF/50V
+
C105
10uF/50V
10uF/50V
R18
47K
47K
R19
47K
R20
47K
47K
R17
47K
1
2
L4
NC
R13
5.1R
1
2
3
4
5
6
7
8
9
CN1
9P(2.0)
+15VA
-15VA
GND
+15VA
-15VA
IN_L
IN_R
C122
100nF
C24
47uF16V
C38
47uF16V
C51
150pF
C39
150pF
R32
10K1%
R30
10K1%
10K1%
R35
10K1%
R42
10K1%
10K1%
R49
0
R45
0
R47
0
R50
0
R53
NC
R56
NC
R52
NC
NC
R61
NC
R69
10K
10K
R70
10K
10K
C67
102(NPO)
R66
7.5K1%
7.5K1%
R63
7.5K1%
7.5K1%
C60
102(NPO)
1
2
L7
FB-0805
A5V
A5V
119
Tape_in_L
Tuner_in_R
TV_in_R
CDR_in_L
CD_in_L
Aux_in_L
Aux_in_R
Tape_in_R
CDR_in_R
Tuner_in_L
CD_in_R
TV_in_L
PHONO_L
PHONO_R
2
3
4
5
6
7
8
9
10
11
12
Level Shifter Latch Circuit
29
28
27
26
25
24
23
22
21
20
19
Level Shifter
Latch Circuit
Control Circuit
DATA
17
CLK
16
ST
14
VS
S
15
VEE
1
VDD
30
IC2
NJU7313AM
NJU7313AM
XLR_L
XLR_R
NJU7313_SCK
NJU7313_SDO
NJU7313_CS
2
3
1
4
U8A
NJM2068
6
5
7
8
U8B
NJM2068
C61
100nF
C62
100nF
-15VA
+15VA
R146
100R
C117
47uF16V
R144
100R
C114
47uF16V
C65
100nF
+
C56
100uF16V
C57
100nF
+
C64
100uF16V
-15VA
+15VA
R65
47K1%
R64
47K1%
R_IN1
L_IN1
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[1]
P[3]
P[3]
P[2]
P[2]
P[2]
P[3]
P[3]
P[3]
P[3]
C58
100pF
C66
100pF
C30
100pF
C103
3.3nFM
R16
1K1%
C102
3.3nFM
R15
1K1%
R14
NC
NC
R7
NC
1
2
L6
FB-0805
1
2
L5
FB-0805
+
C25
10uF/50V
+
C8
10uF/50V
R78
330K
R88
330K
120
R29
10R
10R
R69
10R
10R
R81
7.5K1%
7.5K1%
R4
47R1%
47R1%
TP4
TESTPOINT
TESTPOINT
R131
39K
39K
1
2
3
Q35
2SA1312
2SA1312
1
2
3
Q44
2SA1312
2SA1312
R151
1K
1K
R63
1K1%
1K1%
1
2
3
Q54
2SA1312
2SA1312
R118
120R1%
120R1%
2
3
1
Q8
2SC3324
2SC3324
R85
330R1%
330R1%
R120
120R1%
120R1%
2
3
1
Q60
2SC3324
2SC3324
R121
470K
1
2
3
Q43
2SA1312
R104
1.5K1%
1.5K1%
C3
10nF
10nF
R19
4K7 1%
4K7 1%
R18
4K7 1%
4K7 1%
R103
2.7K1%
2.7K1%
R25
560R1%
4
6
8
K1A
JRC-27F1005-M-555
JRC-27F1005-M-555
+
C69
10uF/50V
10uF/50V
R11
10R1%
10R1%
R107
2.7K1%
1
2
3
Q59
2SA1312
2SA1312
R80
330R1%
330R1%
C60
1.8nFM
R12
22R1%
22R1%
R83
7.5K1%
7.5K1%
R116
NC
D10
BZV55/C12
BZV55/C12
R64
1K1%
1K1%
R102
2.7K1%
2.7K1%
R65
82K
R142
2K2
2K2
C68
1uF
1uF
+
C12
220uF/16V
220uF/16V
C70
1uF
1uF
+
C74
330uF/25V
330uF/25V
D6
BAS85
BAS85
R84
330R1%
330R1%
R28
560R1%
R126
0R
0R
+
C18
220uF/16V
220uF/16V
D2
LED rouge
LED rouge
C56
1uF
1uF
C36
1pF
1pF
R10
22R1%
22R1%
C21
100nF
+
C11
10uF/50V
10uF/50V
R133
330R
330R
C63
2.7nF
2.7nF
R13
10R1%
10R1%
C50
4.7nFM
4.7nFM
R62
10R
10R
R141
DNE
DNE
2
3
1
Q46
2SC3324
2SC3324
2
3
1
Q62
2sc3265
2sc3265
C40
10pF
10pF
1
2
3
Q7
2SA1312
2SA1312
2
3
1
Q3
2SC3324
2SC3324
R144
0
0
R145
39R
39R
R106
2.7K1%
2.7K1%
1
2
3
Q36
2SA1312
2SA1312
C42
10pF
10pF
R68
1K1%
1K1%
R66
120K
+
C10
10uF/50V
R143
DNE
DNE
R140
39R
39R
C54
1uF
1uF
1
2
3
Q4
2SA1312
2SA1312
C32
330pF
330pF
R82
47R
47R
R67
1K1%
1K1%
R79
330R1%
2
3
1
Q53
2SC3324
2SC3324
R26
10R
10R
C41
22uF/ELCO
+
C55
10uF/50V
10uF/50V
R117
470R1%
+
C45
330uF/25V
330uF/25V
C22
100nF
2
3
1
Q37
2SC3324
2SC3324
R3
10R1%
10R1%
2
3
1
Q38
2SC3324
+
C17
220uF/16V
220uF/16V
D8
BAS85
BAS85
R153
330R
330R
1
2
3
Q49
2SA1312
2SA1312
C59
180pFM
TP6
TESTPOINT
TESTPOINT
TP10
TESTPOINT
TESTPOINT
D4
BZV55/C12
BZV55/C12
R128
1M2
1M2
+
C73
330uF/25V
330uF/25V
R109
6.8K1%
6.8K1%
2
3
1
Q50
2SC3324
2SC3324
1
2
3
Q56
2SA1298
2SA1298
R127
1M2
1M2
R119
470R1%
R105
1K1%
1K1%
R27
3K9
3K9
+
C46
330uF/25V
330uF/25V
2
3
1
Q45
2SC3324
2SC3324
+
C9
220uF/16V
220uF/16V
R129
0R
0R
R149
6.8K1%
C49
680PFM
680PFM
+15V
-15V
+12VAL
-12VAL
-12VAL
+12VAL
PHONO_IN_L
IN_MM_L
IN_MC_L
1mA
1mA
R32
100K
100K
C29
100uF16V
100uF16V
N1210X226KCTx5R+-5%
C64
10uF16V
C77
470uF16V
470uF16V
C34
10uF16V
(NPO)
C78
NC
C80
NC
C87
100nF
100nF
C85
100nF
100nF
+
C89
10uF/50V
+
C88
10uF/50V
C86
100nF
100nF
C82
100nF
+
C90
220uF/25V
220uF/25V
+
C91
220uF/25V
220uF/25V
R34
220R
220R
R36
2K4
2K4
R37
2K4
2K4
R35
220R
220R
+15V
-15V
+18VA
-18VA
V IN
2
ADJ
1
V OUT
3
IC3
LM337IMP
LM337IMP
V IN
3
ADJ
1
V OUT
2
IC2
LM317EMP
LM317EMP
121
C35
1pF
1pF
C58
1.8nFM
1
2
3
Q40
2SA1312
2SA1312
D3
BZV55/C12
BZV55/C12
2
3
1
Q34
2SC3324
C39
10pF
10pF
R97
2.7K1%
2.7K1%
+
C72
330uF/25V
330uF/25V
R59
1K1%
1K1%
1
2
3
Q5
2SA1312
2SA1312
+
C7
10uF/50V
10uF/50V
R110
NC
NC
1
2
3
Q52
2SA1312
2SA1312
+
C71
330uF/25V
330uF/25V
+
C6
10uF/50V
10uF/50V
C47
680PFM
+
C15
220uF/16V
220uF/16V
R16
4K7 1%
4K7 1%
TP7
TESTPOINT
TESTPOINT
D5
BAS85
BAS85
2
3
1
Q6
2SC3324
2SC3324
1
2
3
Q55
2SA1298
2SA1298
C62
2.7nF
2.7nF
R56
1K1%
1K1%
R24
10R
10R
R20
560R1%
R156
100K
100K
2
3
1
Q1
2SC3324
2SC3324
R112
120R1%
120R1%
R21
10R
10R
D9
BZV55/C12
BZV55/C12
R58
120K
120K
R132
330R
330R
R125
0R
0R
R77
330R1%
330R1%
13
9
11
K1B
JRC-27F1005-M-555
JRC-27F1005-M-555
C37
10pF
10pF
R72
330R1%
1
2
3
Q39
2SA1312
R136
2K2
2K2
R134
39R
39R
R135
DNE
DNE
D7
BAS85
BAS85
R61
10R
10R
1
2
3
Q57
2SA1312
2SA1312
R139
39R
39R
+
C16
220uF/16V
220uF/16V
2
3
1
Q33
2SC3324
2SC3324
R98
1.5K1%
1.5K1%
R22
3K9
3K9
2
3
1
Q42
2SC3324
2SC3324
C65
1uF
1uF
2
3
1
Q51
2SC3324
2SC3324
R108
6.8K1%
6.8K1%
R146
1K
1K
R8
22R1%
22R1%
C19
100nF
R1
10R1%
10R1%
C2
10nF
+
C44
330uF/25V
330uF/25V
TP5
TESTPOINT
TESTPOINT
R75
47R
47R
R124
1M2
1M2
R73
330R1%
330R1%
R130
39K
39K
D1
LED rouge
LED rouge
R17
4K7 1%
2
3
1
Q41
2SC3324
2SC3324
+
C52
10uF/50V
10uF/50V
+
C8
220uF/16V
220uF/16V
C31
330pF
330pF
R55
1K1%
1K1%
2
3
1
Q48
2SC3324
2SC3324
2
3
1
Q61
2sc3265
2sc3265
R76
7.5K1%
7.5K1%
R6
22R1%
22R1%
C20
100nF
R60
1K1%
1K1%
+
C5
220uF/16V
220uF/16V
TP3
TESTPOINT
TESTPOINT
R115
470K
470K
R54
10R
10R
C67
1uF
1uF
C51
1uF
1uF
R101
2.7K1%
2.7K1%
1
2
3
Q31
2SA1312
R152
330R
330R
C53
1uF
1uF
R100
2.7K1%
2.7K1%
R113
470R1%
R111
470R1%
R114
120R1%
120R1%
C48
4.7nFM
4.7nFM
R96
2.7K1%
R137
DNE
DNE
R74
7.5K1%
7.5K1%
1
2
3
Q47
2SA1312
2SA1312
R23
560R1%
+
C66
10uF/50V
10uF/50V
1
2
3
Q32
2SA1312
2SA1312
R99
1K1%
1K1%
+
C43
330uF/25V
330uF/25V
R78
330R1%
R57
82K
82K
R9
10R1%
10R1%
R2
47R1%
47R1%
C57
180pFM
1
2
3
Q2
2SA1312
2SA1312
R7
10R1%
10R1%
R138
0
0
R122
0R
0R
C38
22uF/ELCO
R123
1M2
1M2
2
3
1
Q58
2SC3324
2SC3324
+15V
-15V
+12VAR
-12VAR
+15V
-15V
-12VAR
+12VAR
PHONO_IN_R
IN_MM_L
IN_MC_L
1mA
1mA
MM
MC
G1
L
R
G
J8A
AV4-8.4-13/EC
G2
LA
RA
J8B
AV4-8.4-13/EC
C81
100nF
ELCO
C30
10uF16V
N1210X226KCTx5R+-5%
C61
10uF16V
C75
100uF16V
100uF16V
C76
470uF16V
470uF16V
C79
NC
C92
NC
R33
6.8K1%
122
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