Harman Kardon HK 990/230 Service Manual page 110

R44 100R
CS_VOL#
R100 100R
SCK
R43
100R
SDO
C43 C44 C48
100PF 100PF 100PF
ANALOG_IN_L
K3A
JRC-27F/005-M(555)
100uF/16V(For audio)
6
4
R38
8
DAC_L
1K
R51 R102
1K 100K
R59
R101
1K
R50 100K
9
DAC_R
13
1K
11
100uF/16V(For audio)
K3B
JRC-27F/005-M(555)
ANALOG_IN_R
U5
LM317EMP
3 2
+15VA VIN VOUT
1 4
ADJ VOUT
C15
C26 100nF
220uF/25V
C16
C12
100nF
10uF/50V
C25
C24
100nF
10uF/50V
C29
C28
100nF
220uF/25V
U8
1
ADJ
4
VIN
2 3
-15VA VIN VOUT
LM337IMP
Volume
16
GND
15
LATCH
14
CLOCK VDD_OUT
Interface
&
13
DATA
Logic
12
CE1
11
CE0 VSS_OUT
C49
9
INL
Bias
R45
10
100K
INR
U4
NJW1159M
C52
R46
100K
+7V
R23
5.6R
R17
C31
150R
47uF/16V
C20
220uF/10V
R18
680R
R26
680R
C23
C34
220uF/10V
47uF/16V
R25
150R
R24
5.6R
-7V
100R
R36
1
OUTL
R105 100K
R109 OPEN
2
BOUTL
C11
3
10uF/50V
R110
+15VA
4
BOUTR
C3
R107 100K
OPEN
R1
47uF/16V
5
100R
OUTR
R35 100R
6
U2
C10 10uF/50V
3
+
7
V+
AD825
2
-
8 C9
V-
47uF/16V
C18 C4
100nF 100nF
C14
100nF
R5
C7
220PF(Mylar)
R4
910R
HP_DETECT#
+15VA
C6
R2 47uF/16V
100R
U3
3
+
AD825
2
-
C13
47uF/16V
-15VA
R12
100R
R7
C8
220PF(Mylar)
R6
910R
C1
100nF
6
-15VA
R11
100R
K1A
JRC-27F/005-M(555)
1.3K
R19
6
4
1K
8
R3
R77
100R
R15 47K
47K
C46
100uF/16V
J14
1 DET
FB3 FB0805
L
2
HEAD PHONE
3 GND
4
R
4P2.0
C47
100uF/16V
K1B
JRC-27F/005-M(555)
R20
11
13
C2
1K
9
100nF
R8
100R
R16
6
47K
C5
100nF
1.3K
JK1
AV2-8.4-14/EC
R13
1
PREOUT_L
75
G1
C17
2.2nF
G2
2
PREOUT_R
C22
R14
100nF
75
C19
2.2nF
Text
Output to class ABL amplifier
1
C53
2
100uF/16V(For audio)
3
4
5
6
7
AMP_FAULT#
J2
7P(2.0)
SPEAKER_A
SPEAKER_B
J3
TRIG_AMP 7P(2.0)
7
6
5
4
3
C56
2
100uF/16V(For audio) 1
R86
47K
Output to class ABR amplifier