Read Harman Kardon HK 990 Service Manual online
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
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