Harman Kardon HK 990 Service Manual ▷ View online
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
2SA1312
&
2
SC
3324:
SOT-
23
N
JL3281D
&
N
JL1302D
:
TO
-264
2SC
4793
&
2SA1837:
T
O
-2
20
M
JD
243
&
M
JD
253:
D
P
A
C
K
2
x
2.
2m
A
M
JL3281A
&
M
JL1302A
:
T
O
-2
64
2SA1255
&
2
SC
3138:
SOT-
23
M
JE15032
&
M
JE15033:
T
O
-2
20
2SC
4935
&
2SA1869:
T
O
-2
20
38m
V
IN
P
U
T
SENSE
+
SENSE-
OUTP
U
T
MUT
E
#
+60
V
+16
V
-16V
-16V
-16V
+16
V
+16
V
-60V
+80
V
-80V
+16
V
-16V
R4
0
4K3
TP5
C7
0
47nF(
M
yl
ar
)10%
My
la
r
C
a
p
R2 150R
3W
Q3
5
2SC
3324
2
3
1
TP1
D1
0
D
L4148
D1
8
D
L4148
C2
6
47nF(
M
yl
ar
)10%
My
la
r
C
a
p
R5 0.
33R
5W
R5
1
330R
R84
10R
TP6
Q2
8
2SA13
12
1
2
3
R3
8
4K3
R1
8
0.
33R
5W
R6
4
330R
C6 47nF/
100V
FB11BD
S-3S
5
R7
0
1K
R3
9
1K8
D7 BAS2
0
FB10BDS-
3S5
R6
9
3K
Q1
3
M
JL328
1A
3
2
1
R7
2
39R
TP7
FB3BDS-
3S
5
Q9 2SC
4793
3
2
1
R35
10R
Q1
7
M
JE
1
5
032
3
2
1
FB2BDS-
3S
5
R6
8
82R
TP8
Q2
5
M
JD
243
3
4
1
R7
3
12K
1/
4W
1%
Q1
6
M
JL328
1A
3
2
1
C1 47nF/
100V
C2
5
270pF(
N
P
O
)5
%
C2
3
47nF
R6
3
330R
R4
2
1K
FB7 BD
S
-3S5
R3
1
1M
R2
3
150R
3W
+
-
U3
B
O
P
A
2134U
A
5
6
7
8
D1
3
D
L4148
R4
3
150R
1/
4W
1%
FB5BD
S-3S
5
R85
10R
R5
5
10K
1/
4W
1%
R4
4
1K
+
C2 220uF/
100V
FB8BD
S-3S
5
Q1 M
JL130
2A
1
3
2
Q3 N
JL1302D
1
3
4
2
5
D2
5
BAS2
0
D1
7
D
L4148
R86
10R
R1
3
22K
3W
Q6 2SA18
37
1
3
2
D2
0
D
L4148
C2
4
47nF
Q2
6
2SA13
12
1
2
3
R34
10R
D1
4
BAS2
0
R7 0.
33R
5W
Q3
2
BC
P
56-
16
1
2
3
4
R9 0.
33R
5W
Q7 M
JE
1
5
033
1
3
2
Q1
1
2SA18
37
1
3
2
R33
10R
C2
7
3.
9pF(
N
P
O
)5%
C1
7
47nF/
100V
Q1
4
N
JL3281D
1
3
5
2
4
Q3
3
2SC
3324
2
3
1
R1
9
0.
33R
5W
R7
5
1K8
R7
6
150R
1/
4W
1%
R6
5
270R
R4
5
3K
Q3
0
2SC
3324
2
3
1
D1
1
D
L4148
R5
6
270R
C2
2
1uF
Q1
2
M
JL328
1A
3
2
1
R4
7
39R
FB9BD
S-3S
5
R36
10R
Q4 M
JL130
2A
1
3
2
Q2
2
2SA13
12
1
2
3
D9 D
L4148
Q8 2SA18
69
1
3
2
Q2
7
2SA13
12
1
2
3
Q5 M
JL130
2A
1
3
2
R1
7
0.
33R
5W
R6
7
390R
R6
6
180R
R2
0
0.
33R
5W
R5
4
6K2
R8 0.
33R
5W
D2
1
D
L4148
R87
10R
FB1 BD
S
-3S5
R2
1
0.
33R
5W
FB12BD
S-3S
5
R5
2
300R
Q3
1
2SC
3324
2
3
1
D1
2
D
L4148
R1
4
30K
3W
Q3
6
2SC
3324
2
3
1
Q1
8
2SC
4793
3
2
1
Q2
9
2SA13
12
1
2
3
TP2
+
C1
8
220uF/
100V
U1 P
C
817A
1
2
3
4
R5
3
3224W-200R(BOURNS)
Q15 M
JL328
1A
3
2
1
FB6BDS-
3S
5
Q1
0
2SC
4935
3
2
1
R3
2
1M
R7
1
3K
R5
0
330R
D2
2
D
L4148
C3
0
10uF
C2
1
1uF
R4
1
4K3
TP3
Q3
4
2SC
3324
2
3
1
R4
9
180R
+
-
U3
A
O
P
A
2134U
A
3
2
1
4
R4
6
3K
R4
8
12K
1/
4W
1%
R88
10R
C1
6
47nF/
100V
R6 0.
33R
5W
Q2
3
2SA13
12
1
2
3
FB4BDS-
3S
5
R7
4
4K3
Q2 M
JL130
2A
1
3
2
TP4
Q3
7
2SC
3324
2
3
1
Q3
8
M
JD
253
1
3
4
Q2
4
2SA13
12
1
2
3
D1
5
BAS2
0
C2
9
10uF
R37
10R
107
4
6
8
K3A
JRC-27F/005-M(555)
13
9
11
K3B
JRC-27F/005-M(555)
CS_VOL#
SCK
SDO
DAC_L
DAC_R
HP_DETECT#
ANALOG_IN_L
ANALOG_IN_R
R45
100K
100K
R46
100K
100K
CE0
11
LATCH
15
GND
16
OUTL
1
BOUTL
2
OUTR
5
INL
9
V-
8
VSS_OUT
6
V+
7
INR
10
BOUTR
4
VDD_OUT
3
CLOCK
14
DATA
13
CE1
12
Bias
Interface
&
Logic
U4
NJW1159M
+15VA
-15VA
6
4
+
3
-
2
7
U3
AD825
R6
910R
910R
C5
100nF
100nF
R7
1.3K
C2
100nF
100nF
+15VA
-15VA
6
4
+
3
-
2
7
U2
AD825
R4
910R
910R
C4
100nF
R5
1.3K
C1
100nF
100nF
Volume
C18
100nF
C14
100nF
R3
100R
R8
100R
1
2
3
4
5
6
7
J2
7P(2.0)
1
2
3
4
5
6
7
J3
7P(2.0)
SPEAKER_A
SPEAKER_B
TRIG_AMP
AMP_FAULT#
1
2
3
4
J14
4P2.0
HEAD PHONE
Output to class ABL amplifier
Output to class ABR amplifier
C11
10uF/50V
C10
10uF/50V
C7
220PF(Mylar)
C8
220PF(Mylar)
C6
47uF/16V
R2
100R
C3
47uF/16V
R1
100R
C13
47uF/16V
R12
100R
C9
47uF/16V
R11
100R
2
G1
1
G2
G3
JK1
AV2-8.4-14/EC
R15
47K
47K
C17
2.2nF
2.2nF
R16
47K
47K
C19
2.2nF
2.2nF
C22
100nF
100nF
PREOUT_L
PREOUT_R
4
6
8
K1A
JRC-27F/005-M(555)
13
9
11
K1B
JRC-27F/005-M(555)
L
R
GND
DET
R19
1K
C29
100nF
100nF
C25
100nF
100nF
R25
150R
150R
C16
100nF
100nF
C15
100nF
100nF
R26
680R
680R
VIN
3
ADJ
1
VOUT
2
VOUT
4
U5
LM317EMP
LM317EMP
R18
680R
680R
ADJ
1
VOUT
3
VIN
2
VIN
4
U8
LM337IMP
R17
150R
150R
+7V
-7V
C20
220uF/10V
220uF/10V
C23
220uF/10V
220uF/10V
C12
10uF/50V
C24
10uF/50V
C26
220uF/25V
C28
220uF/25V
+15VA
-15VA
R20
1K
C31
47uF/16V
47uF/16V
C34
47uF/16V
47uF/16V
R23
5.6R
R24
5.6R
R13
75
R14
75
Text
R36
100R
R35
100R
R38
1K
R51
1K
1K
R50
1K
R59
1K
1K
R77
47K
R86
47K
47K
C46
100uF/16V
C47
100uF/16V
FB3
FB0805
C53
100uF/16V(For audio)
C56
100uF/16V(For audio)
C49
100uF/16V(For audio)
C52
100uF/16V(For audio)
R44
100R
R100
100R
R43
100R
C43
100PF
C44
100PF
C48
100PF
R101
100K
100K
R102
100K
100K
R110
OPEN
R107 100K
R109
OPEN
R105
100K
108
REC OUT_L
REC OUT_R
REC OUT_R
SDA_5V
REC OUT_L
SRC_AESOUT
SDATA_ADC
LRCLK_ADC
BITCLK_ADC
SPDIF_REC
SCL_5V
INT1_5V#
INT_AK4683_5V
2
3
1
Q6
2SC2406
2
3
1
Q1
2SC2406
2SC2406
13
9
11
K4B
JRC-27F/005-M(555)
2
3
1
Q3
2SC2406
4
6
8
K4A
JRC-27F/005-M(555)
2
3
1
Q5
2SC2406
+VCC
-VSS
+5V
+15VA
-15VA
+3.3V
+5V
-15VA
+3.3V
+15VA
+5V
+3.3V
+3.3V
+5V
+5V
+15VA
-15VA
+3.3V
+3.3V
CLK_24MHZ
CLK_24MHZ
I2C_SCL
I2C_SDA
I2C_SDA
I2C_SCL
HEADPHONE_MICRO#
DAC_L
DAC_R
SDO
SCK
CS_AD1955_1#
CS_AD1955_2#
CS_WM8740#
SUB_MUTE_OUT
MUTE_OUT
MC_MM#
ANALOG_IN_R
ANALOG_IN_L
MUTE_LISTEN#
INT_AK4683
PHONO
ANALOG I/O
DIGITAL I/O
MICRO INPUT
2
4
6
8
10
12
14
16
18
20
22
24
26
1
3
5
7
9
11
13
15
17
19
21
23
25
J6
2*13P2.0(180)
2
4
6
8
10
12
14
16
18
20
22
24
1
3
5
7
9
11
13
15
17
19
21
23
J7
2*12P2.0(180)
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
J8
2*14P2.0(180)
1
2
4
3
5
6
8
7
J4
2*4P2.0(180)
1
2
4
3
5
6
8
7
J5
2*4P2.0(180)
R62
4K7
R60
4K7
R57
4K7
R56
4K7
R52
4K7
1
2
3
4
5
J13
5P2.5
2
3
1
Q4
2SC2406
2SC2406
+3.3V
INT1#
R58
4K7
INT2#
CDR_SEL
CDR_SEL
TAPE_SEL
TAPE_SEL
IN_R
IN_L
IN_L
IN_R
2
3
1
Q13
2SC2406
2SC2406
NJU7313_SCK
R29
4K7
+3.3V
+5V
R32
4K7
2
3
1
Q17
2SC2406
+3.3V
+5V
R34
4K7
R47
4K7
2
3
1
Q14
2SC2406
+3.3V
+5V
R33
4K7
R39
4K7
NJU7313_SDO
NJU7313_CS
C42
100UF/16V
100UF/16V
FB7
FB0805
FB5
FB0805
FB6
FB0805
FB4
FB0805
C58
10UF/16V
109
RELAY_MIC
DIRECT_ANALOG
RELAY_MC_MM#
GPIO_BUTTON
GPIO_FAV
GPIO_BUTTON
GPIO_FAV
R
70
10K
R93
470R
470R
1
2
3
Q9
2SA1035
2SA1035
C65
100nF
100nF
R104
10K
10K
R90
4K7
4K7
R
69
10K
R64
47K
47K
R
72
10K
C68
100nF
100nF
RE0/RD/P3D
2
RE1/WR/P2C
1
RE2/CS/P2B
64
OSC2/CLKO
40
RC0/T1OSO/T13CKI
30
RC1/T1OSI/ECCP2/P2A
29
RC2/ECCP1/P1A
33
RD0/PSP0
58
RD1/PSP1
55
RD2/PSP2
54
RD3/PSP3
53
RC4/SDI1/SDA1
35
RC5/SDO1
36
RC6/TX1/CK1
31
RC7/RX1/DT1
32
RD4/PSP4/SDO2
52
RD5/PSP5/SDI2/SDA2
51
RD6/PSP6/SCK2/SCL2
50
RD7/PSP7/SS2
49
MCLR
7
OSC1/CLKI
39
RA0/AN0
24
RA1/AN1
23
RA2/AN2/Vref-
22
RA3/AN3/Vref+
21
RA4/TOCKI
28
RA5/AN4
27
RBO/INT0/FLT0
48
RB1/INT1
47
RB2/INT2
46
RB3/INT3
45
RB4/KBI0
44
RB5/KBI1
43
RB6/KBI2/PGC
42
RB7/KBI3/PGD
37
VDDC
OR
E/VC
AP
10
AVSS
20
AVDD
19
ENVREG
18
RF1/AN6/C2OUT
17
VSS
25
VDD
26
RC3/SCK1/SCL1
34
VDD
38
VSS
41
VSS
56
VDD
57
RE7/ECCP2/P2A
59
RE6/P1B
60
RE5/P1C
61
RE4/P3B
62
RE3/P3C
63
RG0/ECCP3/P3A
3
RG1/TX2/CK2
4
RG2/RX2/DT2
5
RG3/CCP4/P3D
6
RG4/CCP5/P1D
8
RF2/AN7/C1OUT
16
RF3/AN8
15
RF4/AN9
14
RF5/AN10/CVREF
13
RF6/AN11
12
RF7/SS1
11
VSS
9
U17
PIC18F66J10
PIC18F66J10
R108
10K
10K
R68
22K
22K
R65
10K
10K
R106
10K
10K
R98
10K
R
88
10K
1B
1
2B
2
3B
3
4B
4
5B
5
6B
6
7B
7
1C
16
2C
15
3C
14
4C
13
5C
12
6C
11
7C
10
COM
9
GND
8
U15
ULN2003AD
R
80
10K
R92
10K
10K
3
1
2
Q10
BSS123
BSS123
C69
100nF
100nF
R
85
10K
R94
10K
10K
R53
10K
10K
R
75
10K
R67
22K
22K
R
71
10K
R
84
10K
R79
27R
1
2
3
Q8
2SA1035
2SA1035
R
76
10K
R
73
10K
D5
BAS16
BAS16
1
16
K3C
JRC-27F/005-M(555)
JRC-27F/005-M(555)
1
16
K4C
JRC-27F/005-M(555)
JRC-27F/005-M(555)
R78
27R
R103
10K
R
83
10K
R99
10K
10K
R81
27R
R82
27R
R
74
10K
R66
10K
10K
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
+5V
+5VSTBY
-15VA
+5VSTBY
+5VSTBY
+5V
+3.3V
AV3.3V
+3.3V
CS_VOL#
CLK_24MHZ
AMP_FAULT#
MUTE_OUT
SCK
SDO
MC_MM#
HP_DETECT#
I2C_SDA
I2C_SCL
HEADPHONE_MICRO#
TRIG_AMP
SPEAKER_B
SPEAKER_A
MUTE_LISTEN#
CS_WM8740#
CS_AD1955_1#
CS_AD1955_2#
CS_AD1955_2#
NJU7313_CS
INT_AK4683
TxD from front MCU
RxD to front MCU
Standby# from front MCU
RL_MIC
RL_DIRECT
1
2
3
4
5
6
J12
6P(2.0)
1
2
3
4
5
6
J9
Barrette 6P
SW1
5mm(PUSHBUTTON)
5mm(PUSHBUTTON)
C74
10uF/50V
C64
10uF/50V
INT1#
INT2#
INT2#
R
9
10K
R
10
10K
PREOUT_RELAY
1
16
K1C
JRC-27F/005-M(555)
PREOUT_RELAY
+3.3V
FB1
FB0805
C41
47uF/25V
+3.3V
FB2
FB0805
C73
47uF/25V
R4
9
10K
+3.3V
NJU7313_SDO
NJU7313_SCK
R4
8
10K
R
27
10K
AV3.3V
1
2
3
CN1
3P(2.0)
TX
GND
RX
TO IR PCB
1
2
3
Q18
2SA1035
2SA1035
R97
47K
47K
R95
22K
22K
R91
10K
10K
3
1
2
Q20
BSS123
BSS123
R96
22K
22K
1
2
3
Q19
2SA1035
2SA1035
R89
10K
10K
+5VSTBY
-15VA
SUB_MUTE_OUT
R
87
10K
2
3
1
Q12
2SC2406
2SC2406
2
3
1
Q15
2SC2406
2SC2406
110
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