Read Harman Kardon HD 990 (serv.man7) Service Manual online
5
5
4
4
3
3
2
2
1
1
E
E
D
D
C
C
B
B
A
A
Servo DC
Servo DC
1%
Differential output stage
I/V conversion
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
Differential output stage
1%
1%
1%
1%
5604C
1.5
HD 990 Main board
Harman/Kardon
Custom
3
10
Tuesday, October 07, 2008
Title
Size
Document Number
Rev
Date:
Sheet
MUTE_1955
DAC_LRCLK
RST_1955#
MOSI
SCK
DAC_SDATA_L
DAC_BITCLK
DAC_MCLK_1
CS_1955_1#
UNBAL_L
-12VA
+12VA
+12VA
+12VA
+12VA
-12VA
-12VA
-12VA
-12VA
+12VA
-12VA
+12VA
+12VA
+12VA
+5V
+5VA
+5V
+5V
R52
2K7
B
C
E
Q18
2SA1035
2
3
1
FB13
100R
C28
100nF
R42
330R
Q21
2SC2406
3
2
1
R56
2K2
B
C
E
Q20
2SA1035
2
3
1
R80
330R
C175
2.2nF
C36
100nF
-
+
U8B
TL072
6
5
4
8
7
R60
330R
B
C
E
Q17
2SA1035
2
3
1
R75
330R
+
CE9
47uF/25V
1
2
C176
100nF
Q19
2SC2406
3
2
1
+
CE62
100uF/10V
1
2
R71
100R
R59
330R
-
+
U5A
OP275GS
2
3
4
8
1
C38
100nF
R79
47K
C23
100nF
K2A
RELAY JRC-19F
4
6
8
R72
56R
R47
2K2
R45
680R
U11
AD1955
1
15
10
28
18
17
11
12
21
8
9
2
3
4
27
25
26
24
6
7
5
23
20
22
19
16
14
13
DVDD
AVDD
AGND
DGND
OUT L+
OUT L-
OUT R+
OUT R-
ZERO_L
DSD_RDATA
DSD_PHASE
LRCLK/EF_WCLK
BCLK/EF_BCLK
SDATA/EF_LDATA
MCK
CLATCH
CCLK
CDATA
DSD_SCLK
DSD_LDATA
EF_RDATA
RST
ZERO_R
MUTE
AGND
FILTB
IREF
FILTR
R82
47K
C35
100nF
+
CE12
47uF/25V
1
2
R77
2K2
R43
330R
Q29
2SC2406
3
2
1
+
CE8
47uF/25V
1
2
C177
2.2nF
R57
680R
+
CE11
47uF/25V
1
2
R53
510R
Q27
2SC2406
3
2
1
C185
3.3nF
R73
2K7
C178
680pF
R62
2K7
R81
330R
C179
680pF
C37
100nF
R67
820R
R51
56R
R76
47K
-
+
U6A
OP2134UA
2
3
4
8
1
C186
3.3nF
R74
510R
R78
680R
R49
2K7
-
+
U8A
TL072
2
3
4
8
1
C43
100nF
R54
330R
R50
100R
R61
47K
C31
100nF
C180
680pF
R64
330R
C24
100nF
Q23
2SC2406
3
2
1
R70
2K7
K2B
RELAY JRC-19F
13
9
11
C33
100nF
C30
100nF
B
C
E
Q28
2SA1035
2
3
1
R55
47K
Q32
2SC2406
3
2
1
B
C
E
Q30
2SA1035
2
3
1
R48
330R
+
CE61
100uF/10V
1
2
R46
820R
R63
330R
B
C
E
Q26
2SA1035
2
3
1
C32
100nF
+
CE10
47uF/25V
1
2
R68
2K2
C181
100nF
FB14
100R
R66
680R
R44
15K
C182
680pF
R65
15K
+
CE7
47uF/25V
1
2
Q24
2SC2406
3
2
1
-
+
U6B
OP2134UA
6
5
4
8
7
-
+
U5B
OP275GS
6
5
4
8
7
B
C
E
Q22
2SA1035
2
3
1
R69
330R
Q31
2SC2406
3
2
1
R58
47K
B
C
E
Q25
2SA1035
2
3
1
JP3
XLR male
1
3
2
G
harman/kardon
HD 990/230 Service Manual
Page 36 of 46
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