Harman Kardon HK 990/230 Service Manual page 107

R14
1K
TO Pamp PCB
CN13
1 1 1
HP DETECT
2 2 2
HP L
3 3 3
GND
4 4 4
HP R
4P(2.0)
TO Pamp PCB
-15V
CN12
1 1 1
HEADPHONE_MICRO#
2 2 2
+15V
3 3 3
-15V
4 4 4
MIC OUT
5 5 5
AGND
C10
5P2.5
100U25
C9
100U25
R1
10R
R8
1K C2
-15V
R10
1K 104
5
1
IC4A
2
21
3
TPA6120A2
4
R13
1K C5
104
+15V
+15V
C32
+15V
150P
R24
10K
IC5B
NJM2068
6 6 6
7 7 7
C7
470P
5 5 5
R30
+15V
100R
C36 C41
104 10u16
R7
-15V 1K
R9
1K C1
104
16
20
19
R11 18
17
IC4B
1K
TPA6120A2
R12
1K C3
104
+15V
Q2
C2120
R18
10K
D4
R19
IN4148
47K
R31
27K
R5
OPEN
GND
R22
RELAY1
200
JRC-27F/012-M(555)
C31
47P
R23
10K
IC5A
R25
NJM2068
2 2 2
1K
R26
1 1 1
1K
3 3 3
R29
-15V
100R
C35
C40
104
10u16
R2
10R
L IN
R IN
R17
C29
47K
331P
R20
C30
47K
331P
R32 R4
2.12V
2.2K 10K
C38
10u16
R3
C4
1.65K
473
R28
100k
R15
10R
CK1
CK-6.35-02
2
3
4
5 K
7
8 K
C42
104
+15V
Phones board