Harman Kardon HK 3700 Service Manual ▷ View online
7
6
5
4
3
2
1
REVISION
SCHEMATIC DIAGRAM
SHEET
MODEL
DRAWING NO
DESIGN
CHECK
APPROVE
A
D
C
6
A
B
C
D
5
4
3
2
1
B
6 6
DAC-R
DAC-L
FROM CODEC
DAC-L
DAC-R
MUTE CONTROL
TO AMP B'D
2013.10.11
MULTI. LAB
ANAM
ISSUE
LPP
2012.03.01
27
14
(VOLUME_FILTER)
OVERLOAD
P_FAIL
P_FAIL
-12V
AD_RIN
OC_DETECT
TUNER_SDA
TUNER_SCL
FUNC_MUTE
TUNER_MUTE
TUNER_MUTE
* 3 Step Detect *
3.8A : VCC 45V->41V
4.3A : VCC 41V->25V
3.8A : VCC 45V->41V
4.3A : VCC 41V->25V
5.96A: Protect
DC_PROTECT
HP_L
HP_R
AGND
AD_LIN
+7VA
-7VA
+3.3VC
FAN1_ON
Bluetooth
BT_STATUS
AGND
+3.3V_BT
FN2
AGND
BT_PWR_CTL
BT_AUDIO_EN
BT_FL
BT_FR
FN1
BT_STATUS_PAIR
FN3
AGND
CHGND
CHGND
CHGND
+5V_BT
+12V
HK3700 /3770
AGND
HK3770 ONLY
SPK2_CONT.
SPK1_CONT.
REC_MUTE
SPK1_CONT.
REC_MUTE
OVERLOAD DETECTION
PROTECT TEST
(SHORT)
(SHORT)
DC PROTECTOR
Operating: +5.0V~ , -5.0V~
R940=1.5K
C
H
A
NGED
P
IN 2
5 -
>
P
IN 2
7
2013.
06.
20
C
H
A
NGED
P
IN1
4 D
GND
-
>
F
A
N1
_O
N
OU
TA
IN1
A
V+
IN2
A
CNT
1
IN3
A
CN
T2
NC
IN3
B
Vr
ef
IN2
B
GND
IN1
B
OU
TB
AGND
MAIN_VOL_CLK
MAIN_VOL_DATA
NJW1112_LATCH
NJW1194_LATCH
AUDIO_R
AUDIO_L
AGND
O
N
LY
H
K
3700
O
N
LY
H
K
3700
AGND
2013.08.07
2013.08.07
DAC_FR
DAC_FL
2013.08.08
2013.08.08
2013.08.08
2013.08.08
AGND
FAN2_ON
2013.10.11 2013.10.11 2013.10.11
C.D.W
S.K.S
K.J.K
2013.08.29
HK3770 ONLY
V+
B OU
T
PU
T
B-
IN
PU
T
B+
IN
PU
T
V-
A+
IN
PU
T
A-
IN
PU
T
A O
U
T
PUT
-
+
B
-+
A
8
7
6
5
4
3
2
1
IC
1500
(H
K3770)
CV
IA
Z4580MT
R
-E
1
R1514
3.3K(HK3770)
R1512
3.3K(HK3770)
C1506
2700P
(H
K3770)
C1504
2700P
(H
K3770)
R1515
1.5K(HK3770)
R1513
1.5K(HK3770)
R
1508
6.8K(H
K3770)
R1516
6.8K(HK3770)
C1508
390P(HK3770)
C1505
390P
(H
K3770)
C1507
0.1u
F(
H
K3770)
C1510
0.1u
F(
H
K3770)
R1511
100(HK3770)
C1513
10/16V(HK3770)
R
1510
100K(H
K3770)
C1512
0.01u
F(
H
K3770)
R
1507
6.8K(H
K3770)
C1501
2700P
(H
K3770)
C1503
2700P
(H
K3770)
R1502
1.5K(HK3770)
C1502
390P
(H
K3770)
R1505
1.5K(HK3770)
R1503
6.8K(HK3770)
C1500
390P(HK3770)
R1506
100(HK3770) C1509
10/16V(HK3770)
R
1509
100K(H
K3770)
C1511
0.01u
F(
H
K3770)
R1501
3.3K(HK3770)
R1500
3.3K(HK3770)
R1517
0(HK3770)
R1504
0(HK3770)
Q1505
T1N144C
Q1504
T1N144C
Q1503
T1P
144C
R
1557
10K
Q1501
T1N144C
Q1502
T1N144C
Q1500
T1P
144C
R
1555
10K
R1556
1M
R1558
1M
D1501
1SS355
C1543
470/16V
C1542
470/16V
D1500
1SS355
R1554
1K
R
1570
0
D1503
HVD1SR159-200
D1502
HVD1SR159-200
3
2
1
IN
GND
OUT
IC1502
CVILM7808RTRL
3
1
2
OUT
IN
GND
IC1503
CVILM7908RTRL
C1545
0.1u
F
C1547
0.1u
F
C1544
0.1u
F
C1546
0.1u
F
Q1509
R1561
100K
R1568
10K
R
1569
10K
D
1506
3.3V
Q1517
MMBT5551
Q1516
MMBT5551
Q1515
MMBT5401
R
1571
100K
D1504
1SS355
D
1505
1S
S355
C1552
10/16V
C1553
1000P
L1500
CLZ9R005V
C1554
22/6.3V
C1555
0.1u
F
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
W
F1500
CJ
P17GA
193Z
Y
(H
K3770)
20
21
23
22
19
18
16
17
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
W
F1502
Q1506
T1N144C
Q1507
T1N144C
Q1508
T1P
144C
R
1590
10K
R1591
1M
Q1510
RT1P144
Q1514
R
T1P
144
Q1512
MMBT5551
R
1562
1.5K
R
1564
1K
C1551
10/16V
R
1567
4.7K
R
1563
3K
Q1511
MMBT5551
R1566
4.7K
R1565
4.7K
Q1513
M
M
BT5551
C1550
1000P
T1501
T1500
R
1595
1K
R
1596
3K
R1597
OPEN
R1598
OPEN
C
1563
10/16V
(H
K3770)
C
1562
10/16V
(H
K3770)
C
1560
10/16V
(H
K3770)
C
1557
10/16V
(H
K3770)
C1
56
1
100/16V
(H
K3770)
C1
56
9
10/16V
(H
K3770)
C
1568
10/16V
(H
K3770)
C1
56
6
10/16V
(H
K3770)
C
1564
10/16V
(H
K3770)
C1
56
5
10/16V
(H
K3770)
R
1582
0(H
K3770)
R
1576
0(H
K3770)
C1559
22P(HK3770)
C1567
22P(HK3770)
R
1579
0(H
K3770)
R
1577
0(H
K3770)
R1
58
3
0(H
K
3770)
C1558
50V/1uF(HK3770)
R1
57
8
0(H
K
3770)
C1556
50V/1uF(HK3770)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IC
1511
(HK3770)
C
V
IN
JM
2753V
R
1581
0(H
K3770)
R
1575
0(H
K3770)
R
1574
0_H
K3700
R
1580
0_H
K3700
13
12
11
10
8
9
7
65
43
2
1
C
N
1511
R
1572
100K(H
K3770)
R
1573
100K(H
K
3770)
R1599
150(HK3770)
C1581
OPE
N
D
1561
HVDU
DZS9
.1
B
SR
(H
K3770)
D_FR-
D_FL-
D_FR+
D_FL+
+7V
-7V
HP_MUTE
FUNC_MUTE
FUNC_MUTE
HP_MUTE
+12V
-12V
ST+5V
POWER_FAIL
CURRENT_DET
+7V
-7V
FUNC_MUTE
TUNER_MUTE1
TUNER_SDA
TUNER_SCL
CHGND
-8V
+8V
-7V
+7V
-12V
+12V
TUNER_MUTE
-12V
TUNER_MUTE1
+3.3V_DC
NET_3.3V
BT_FR
BT_FL
BT_FN1
BT_FN2
BT_AUDIO_EN
BT_STATUS_PAIR
BT_STATUS
BT_FN3
BT_PWR_CTL
ST+5V
+12V
-12V
SPK2
SPK1
REC_MUTE
REC_MUTE
REC_MUTE
SHORT_PROTECT_IN
+12V
+12V
+12V
DC_PROTECT_IN
FAN1_ON
AUD
IO
_L
AUD
IO
_R
DA
C
_F
L
DA
C
_F
R
MIL
A
N
_L
MIL
A
N
_R
BT
_F
R
BT
_F
L
2753_CN
T1
2753_CN
T2
A
GND
A
GND
A
GND
AGND
AG
N
D
DAC_FL
DAC_FR
AD_RIN
AD_LIN
AUDIO_L
AUDIO_R
MAIN_VOL_CLK
MAIN_VOL_DATA
NJW1112_LATCH
NJW1194_LATCH
HPR-OUT
HPL-OUT
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
DAC_FR
DAC_FL
FAN2_ON
AGND
CHGND
$$$10751
+12V
+9V
+9V
+9V
+9V
Harman Kardon
HK 3700 Service Manual
Page 101 of 109
A
B
C
D
1
2
3
4
5
6
D
C
B
A
HK37X0 SMPS SCHEMATIC DIAGRAM
DRAWING NO
(SMPS)
12610SCMZ
HK37X0
SCHEMATIC DIAGRAM
7
6
5
4
3
2
1
REVISION
1
1
27
26
SHEET
MODEL
X.X.X
CHECK
APPROVE
DESIGN
ISSUE
ANAM
MULTI. LAB
2013.07.22
**IMPORTANT SAFETY NOTICE.
IMPORTANT FOR SAFETY. WHEN REPLACING ANY OF THESE COMPONENTS.
USE ONLY MANUFACTUREY'S SPECIFIED PARTS.
**THE UNIT OF RESISTANCE IS OHM. K=1000 OHM, M=1000 KOHM
**THE UNIT OF CAPACITANCE IS MICROFARAD (uF)pF=10 uF
**THIS SCHEMATIC DIAGRAM MAY MODIFIED AT ANY TIME WITH THE
**THIS SCHEMATIC DIAGRAM MAY MODIFIED AT ANY TIME WITH THE
IMPROVEMENT OF PERFORMANCE
COMPONENTS IDENTIFIED BY MARK HAVE SPECIAL CHARACTERISTICS.
-6
MP
L
N
13.07.22
X.X.X
Y.W.Y
HEAT SINK
13.07.22
13.07.22
(60V/3A)
(60V/1A)
CS
Drain
GND
GND
VDD
VDDG
FB
Drain
HS92
DGND
(400V/2A)
(400V/2A)
VCC(-)
(400V/20A)
(400V/20A)
VCC(+)
HEAT SINK
HEAT SINK
100V : T 8A H
250V
230V : T 6.
3A H
250V
HEAT SINK
HEAT SINK
HS93
DGND
POWER_HI
AMP_VCC_ON
POWER_DOWN
ST+5V
D+7V
D+7V
ST+5V
-12V
AGND
+12V
VOL_SEL_3
DGND
VOL_SEL_1
VOL_SEL_2
+38V
GND
DGND
ST+5V
-12V
AGND
+12V
100V : 75K
230V : 150K
100V : Used
230V : Not used
230V : Not used
F901
HEAT SINK
For IC97
3770 : H->L 46V
3770 : H->L 39V
HEAT SINK
For IC97
HEAT SINK
For Q904
(60V/3A)
3770 : H->L 30V
3700 : H->L 39V
3700 : H->L 33V
3700 : H->L 27V
Division : C930
3770 : 250V 270uF
3700 : 250V 220uF
3700 : 250V 220uF
3770 : 450V 150uF
3700 : 450V 120uF
3700 : 450V 120uF
Division : C901
3770 : 250V 270uF
3700 : 250V 220uF
3700 : 250V 220uF
3770 : JUMPER
3700 : JUMPER
3700 : JUMPER
USA
EUR
USA
EUR
ADD : Tube (5PIE*20mm)
Div
is
io
n : C
Y9
5
3770 :
400V
102 M
3700 :
400V
102 M
3770 :
400V
471 M
3700 :
400V
471 M
USA
EUR
Division : CY91
3770 : 400V 152 M
3700 : 400V 152 M
3700 : 400V 152 M
3770 : 400V 102 M
3700 : 400V 152 M
3700 : 400V 152 M
USA
EUR
Division : CY92
3770 : 400V 152 M
3700 : 400V 152 M
3700 : 400V 152 M
3770 : 400V 102 M
3700 : 400V 152 M
3700 : 400V 152 M
USA
EUR
Division : CY96
3770 : JUMPER
3700 : 400V 152 M
3770 : JUMPER
3700 : 400V 152 M
USA
EUR
Division : CY93
3770 : 400V 102 M
3700 : 400V 102 M
3700 : 400V 102 M
3770 : 400V 102 M
3700 : 400V 102 M
3700 : 400V 102 M
USA
EUR
Division : CY94
3770 : 400V 102 M
3700 : 400V 102 M
3700 : 400V 102 M
3770 : 400V 471 M
3700 : 400V 102 M
3700 : 400V 102 M
USA
EUR
1
2
CN90
YW396-03AV
TH91
DSC-2.5D20
VT
91
14D
-561K
CX9
2
275V
334 K
CX9
1
275V
224 K
CY9
2
400V
152 M
CY9
1
400V
152 M
C910
1KV 222 K
D906
US1M
US1M
D909
MM1Z20
R
906
39
R915
68K
R913
0R1 1W
R910 33
R912
1K1
D907
1N4448W
D904
US1M
C
905
1KV
102 K
D903
US1M
US1M
1
2
3
4
PC93
EL357NB
R
955
56KF
1
3
4
2
DB91
RS1005M
R
917
Not
u
sed
R
916
15K
R907
68K 1W
R
920
68K 2W
C
912
1KV
470 J
C
908
Not
u
sed
R914
0R1 1W
C
907
50V
47 J
R901
3K9
R918
20K
C909
50V 821 J
R
943
6K2
R944
4K7
R
953
11K3F
R
941
6K2
R948
0 ohm
C917
50V 102 K
R
908
0R
6 1W
R909
100K
D916
MM1Z12
R951
Not used
Not used
R956
47K
47K
R958
10KF
10KF
R959
5K6F
5K6F
R954
4K7
1
2
3
4
PC94
EL357NB
D917
MM1Z18
MM1Z18
R945
560
R
949
Not
u
sed
R
960
7K5 1W
D915
Not used
C904
50V 105 K
R
904
0 oh
m
1
2
3
4
PC95
EL817B
D913
S1M
S1M
D911
US1M
CY93
400V 102 M
C
918
50V
10u
F
C
929
6.3V
470u
F
D921
11EQ06
1
2
3
4
5
6
7
8
9
10
TF91 EE1625
1
2
3
4
PC92
EL357NB
R934
560
R946
10KF
10KF
R947
10KF
10KF
R942
2K2
R938
560
C
911
1KV
102 K
D910
UF4007
1
2
3
4
5
6
7
8
IC91
OB2358L
R923
1K
C914
50V 472 K
D901
S1M
D902
S1M
C902
450V 22uF
R922
10
R
924
1.2M
R925
1.2M
R929
1.2M
R932
4R7
D914
MM1Z20
C924
50V 222 K
R
952
100 1W
D
927
1N4448W
1
2
3
4
PC91
EL357NB
D
926
1N4448W
R937
1K
C920
50V 47uF
D908
MM1Z24
1
2
3
Q902
A708Y
D
919
1N4007
R936
1K
C921
50V 22uF
D918
MM1Z20
1
2
3
Q903
A708Y
D920
FFM107
R
935
0 oh
m
R961
10K
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
ET91
CJT1A026
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
ET92
CJT1A026
C
937
63V
470u
F
C
928
63V
2200u
F
L921
6mm
C944
6.3V 1000uF
R964
Not used
J903
7.5mm
J905
12.5mm
R966
22
J906
20mm
J910
15mm
J904
12.5mm
BD91
3512
J928
10mm
R
968
0 oh
m
J935
15mm
J932
10mm
R967
10
J911
7.5mm
R969
0 ohm
D
912
MM1Z
27
D
928
20V
1/2W
D933
SF26
R
974
150K
R
975
150K
R
976
150K
D932
S1M
S1M
D937
SF26
1
2
3
4
LF93
RING-616/120uH Min
R972
10
R970
10
R971
10
R
979
470K
R
980
470K
R
981
470K
R
982
470K
R911
0 ohm
J915
10mm
J936
12.5mm
J917
6mm
2
1
TS91
Not used
R984
47
C915
50V 105 K
F901
1
3
2
4
LF91
SQE2930/8mH
1
32
4
LF92
SQE2930/8mH
J938
Not used
C
901
250V
270u
F
C
930
250V
270u
F
R903
47 2W
1
2
3
Q901
17N80C
3
C
936
63V
2200u
F
C
939
63V
470u
F
R
993
7K5 1W
D950
MM1Z22
C941
10V 5600uF
C
943
10V
1000u
F
R
921
56KF
D943
UF4004
C949
100V 10uF
100V 10uF
R991
1K
R940
15K
R
950
220K
D944
US1M
R
977
68KF
L924
1.8uH
L928
1.8uH
D942
FCU20A40
D952
FCU20A40
3
2
1
CN20
2
1
HS92
1
2
3
Q909
RT1N141C
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
ET95
CJT1A026
2
1
HS93
J901
12.5mm
J907
15mm
J908
10mm
J918
10mm
J919
10mm
J941
6m
m
1
2
3
IC94
KA431SAMF2
1
2
3
IC95
KA431SAMF2
J943
10mm
1
2
3
IC96
KA431SAMF2
KA431SAMF2
J947
7.5mm
J914
10mm
J931
10mm
CY94
400V 102 M
R986
560
1
2
3
4
PC96
EL357NB
1
2
3
Q915
RT1N141C
D
935
1N4448W
R996
47
R997
56KF
3
2
1
IC97
7812A
C925
104
D
924
1N4448W
C932
50V 47uF
D922
1N4448W
C
953
25V
100u
F
C
955
50V
22u
F
2
1
3
IC98
7912A
7912A
C926
104
104
D
925
1N4448W
D936
1N4448W
D939
31DQ06-FC5
D938
31DQ06-FC5
D934
Not used
J923
10mm
J926
12.5mm
J929
10mm
J948
20mm
1
2
3
Q916
RT1N141C
R
939 47
C956
1KV 102 K
C957
1KV 102 K
R
978
220 1W
R
973
220 1W
C
922
Not
u
sed
R928
10
BD95
Not used
J930
17.5mm
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
9
10
11
ET93
CJT1A026
1
2
3
4
PC97
EL817B
R930
37K4F
R933
180
R999
56KF
RX9
4
Not
u
sed
RX9
5
Not
u
sed
1
2
3
4
PC98
EL817B
R957
180
R962
43KF
3
2
1
IC99
78L24
D
929
MM1Z
12
C923
104
1
2
3
4
5
6
7
98
10
11
12
13
14
15
BN65
7
6
5
4
3
2
1
1
2
3
4
5
6
7
CN66
J949
20m
m
R
992
0 oh
m
R963
0 ohm
L922
100MHz_60ohm_6A
L923
100MHz_60ohm_6A
J950
7.5mm
C
945
104 C958
103
C
959
104 C960
103
C
961
104 C962
103
C
963
104 C964
103
C
967
104 C968
103
C
969
224
C
971
224
C
973
224
C
975
224
L925
7uH
J955
6mm
2
1
TS92
110 /70mm
℃
C
978
104
C
977 104
C
979
104
R
983
Not
u
sed
R987
Not used
C
933
25V
470u
F
R988
0 ohm
R
919
10K
CY95
400V 102 M
400V 102 M
J937 7.5m
m
C981
Not used
C982
Not used
R
994
360 1W
R
995
360 1W
RX9
3
1.5M
RX9
1
Not
u
sed
RX9
2
Not
u
sed
J962
10mm
J961
10mm
1
BL
2
ZC
3
FB
4 CS
5
VINS
6 GATE
7
VCC
8
GND
IC93
ICE2QS02G
R931
820K
820K
C
913
25V
225 K
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TF92
EE2525
R990
10 1W
J902
20mm
J912
15mm
J913
15mm
J925
20mm
HS94
J922
7.5mm
J933
7.5mm
1
2
3
4
5
6
1
2
3
4
5
6
HS91
1
2
3
Q914
A708Y
A708Y
R985
1K8
R989
1K8
J916
10mm
VT
92
14D
-561K
C
919
1KV
470 J
CY96
400V 152 M
C
983
Not
u
sed
C
984
6.3V
470u
F
R
965
Not
u
sed
R
998
Not
u
sed
D905
Not used
Not used
12
PC99-A
EL357NB
34
PC99-B
EL357NB
EL357NB
D
951
MM1Z
22
R891
1K
1
2
3
Q917
RT1N141C
R894 47
1
2
3
Q918
RT1N141C
R892
1K
D953 1N4448W
6 GATE
5
VDD
4 SENSE
3
RI
2
FB
1
GND
IC92
OB2263MP
OB2263MP
1
2
3
Q
904
10N65KL
-TF3-T
R893
47
R896
470
D
923
1N4448W
R897
15K
R
898
22
D
930
MM1Z
27
C903
50V 471 J
1
2
3
Q926
2SC6046
1
2
3
Q921
2907AS
R881
100
12
CN
91
YW
396-03A
V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TF93
ER5345V
R778
0R01 J 5W
J927
12.5mm
R
779
0 oh
m
J920
20mm
J921
12.5mm
R777
0 ohm
R776
0 ohm
L929
1.8uH
L930
1.8uH
J934
6mm
J939
17.5mm
J940
10mm
HS95
J944
12.5mm
J945
12.5m
m
HS96
J942
17.5mm
C
931
Not
u
sed
D
931
MM1Z
22
R775 0 ohm
1
2
R
926
1.2M
1
2
R927
1.2M
1
2
2
C
906
50V
222 K
C934
50V 105 K
C
927
50V
105 K
1
2
R
902 15K
1
2
3
4
PC89
EL817B
R774
180
R773
1K8
D
954
MM1Z
22
12
PC90-A
EL357NB
34
PC90-B
EL357NB
EL357NB
R772
1K
1
2
3
Q928
RT1N141C
R770
47
1
2
3
Q927
RT1N141C
R771
1K
D955
1N4448W
R768
30KF
R767
Not used
R766 0 ohm
J963
20mm
J964
12.5m
m
J966
10mm
J965
15m
m
CY97
Not used
PG91 PG92
J967 7.5m
m
R765
1R5 1W
PGND
+BV
AC-
L
AC-
N
AC-L
AC-N
+BV
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
DGND
DGND
PGND
PGND
PGND
PGND
CHGND
DGND
DGND
DGND
DGND
DGND
DGND
PGND
PGND
PGND
DGND
PGND
DGND
S5V
S5V
PC1
PC1
DGND
VKK
DGND
DGND
DGND
PGND
DGND
DGND
DGND
DGND
AC-
N
PGND
PGND
PGND
DGND
7VD
PC2
7V
D
PGND
DGND
PC2
7VD
DGND
DGND
ST
5V
DGND
VOL_SEL_1A
VOL_SEL_2
DGND
VKK
ST5V
+12V
-12V
D+7V
ST5V
+12V
-12V
VOL_SEL_2
AC-
L
+12V
-12V
DGND
DGND
DGND
DGND
DGND
DGND
CHGND
PGND
PGND
+BV
DGND
DGND
DGND
CHGND
DGND
VOL_SEL_1
7V
D
7V
D
G
G
DGND
PGND
DGND
DGND
DGND
DGND
VOL_SEL_3
DGND
DGND
D+
7V
VOL_SEL_3
VOL_SEL_2
VOL_SEL_1
VO
L_
SEL_
1A
+BV
+BV
Harman Kardon
HK 3700 Service Manual
Page 102 of 109
HK37_MAIN_MP_CUP12609Z-A_131205.sch-1 - Mon Dec 09 11:48:13 2013
HK3700/3770
2
A
B
1
2
3
4
5
D
C
B
A
6
C
D
APPROVE
CHECK
DESIGN
DRAWING NO
(AMP)
1
MODEL
SHEET
SCHEMATIC DIAGRAM
REVISION
1
2
3
4
5
6
7
MP
L-CH
R-CH
- 6
**THE UNIT OF RESISTANCE IS OHM.
K=1000 OHM, M=1000 KOHM
**THE UNIT OF CAPACITANCE IS MICROFARAD (uF).
1pF = 10 uF
**THIS SCHEMATIC DIAGRAM MAY BE MODIFIED AT ANYTIME
WITH THE IMPROVEMENT OF PERFORMANCE.
COMPONENTS IDENTIFIED BY MARK HAVE SPECIAL CHARACTERISTICS
USE ONLY MANUFACTURER'S SPECIFIED PARTS.
IMPORTANT FOR SAFETY. WHEN REPLACING ANY OF THESE COMPONENTS,
**IMPORTANT SAFETY NOTICE.
FROM SMPS B'D
+VCC
GND
-VCC
GND
-VCC
22 27
SPK1_Fr
SPK2_FL
SPK1_FR
SPK2_FR
-1.2V
+1.2V
C915
C916
OVERLOAD
P_FAIL
-12V
ADC_R
OC_DETECT
MAIN_VOL_DATA
TUNER_SCL
TUNER_SDA
MAIN_VOL_CLK
FUNC_MUTE
TUNER_MUTE
DC_PROTECT
HP_R
HP_L
ADC_L
+7.5VA
-7.5VA
+3.3V
FAN1_ON
+12V
AGND
REC_MUTE
SPK1_SEL
SPK2_SEL
AGND
2W 0.47Ω
*4
2W 0.47Ω
*4
L
R
L
R
HK3700 : 2SA1695
HK3770 : 2SC3856
HK3700 : 2SC4468
HK3700 : 2SC4468
HK3770 : 2SA1492
Q402,Q502
Q403,Q503
NJW1112_LATCH
NJW1194_LATCH
HK3700 : 6800uF/50V (KOSHIN)
HK3770 : 6800uF/63V (ELNA)
C915 , C916
FAN1_H/S
FAN
TEST
(S
HORT
)
AGND
NJW2753_R
NJW2753_L
AGND
HK3700 : 2SA1695
HK3770 : 2SC3856
Q403,Q503
HK3700 : 2SC4468
HK3770 : 2SA1492
Q402,Q502
DAC-FR
AGND
DAC-FL
DAC_FR
AGND
DAC_FL
FAN2_ON
AGND
Only HK3770
C924
0.1uF
D973
1SS355
D974
1SS355
ET901
R567
47K
R566
47K
R562
33K
C917
47/50V
R565
10K
R563
33K
R564
33K
C931
0.047u
C932
0.047u
R560
75K
R555
0.1
R556
0.1
R557
1.0
R558
1K
R559
560K
Q937
MMBT5401
Q940
MMBT5401
C516
16V/22uF
R569
47K
R568
47K
R561
33K
ET902
J914
D409
CVD1SS355T
D408
CVD1SS355T
C334
5600P(M)
C332
5600P(M)
C331
5600P(M)
C333
5600P(M)
C335
0.047u(M)
C336
0.047u(M)
13
24
5
6
RY33
13
24
5
6
RY32
R543
1K
R542
7.5K
R540
22K
R526
1.5K
C502
330P
R532
33K
C501
47uF/50V
R525
33K
R534
10
C511
0.01uF
R508
10(1/4W)
R509
10 (1/4W)
C507
18P
C506
330uF/63V
C504
220/50V
C505
330uF/63V
R529
270
R524
470
R527
100
R528
100
R523
1.6K
R522
1.6K
R517
560
R521
560
R519
560
R520
560
R518
560
R505
10 (1/4W)
R504
10 (1/4W)
R515
15K
R514
15K
R516
560
Q510
A1024Y
Q511
C3206Y
C503
270P
C508
180P
R512
220
R513
220
L202
0.5uH
R546
47 (1/4W)
R547
47 (1/4W)
R536
2.4K
Q501
KTC3114A
KTC3114A
C509
10/50V
Q508
A1024Y
Q509
C3206Y
R510
220
R511
220
Q504
2SA1859A
2SA1859A
Q505
2SC4883A
R502
2.2
R503
2.2
R506
100
R507
100
R533
330
D502
1SS133
R535
OPEN
R538
750
R541
270K
D503
1SS133
R545
4.7K
R530
47K
R449
1K
R448
7.5K
R446
22K
R424
1.5K
C402
330P
R430
33K
C401
47uF/50V
R423
33K
R431
10
C412
0.01uF
R408
10 (1/4W)
R409
10 (1/4W)
C409
18P
C407
330uF/63V
C405
220/50V
C408
330uF/63V
R429
270
R422
470
R425
100
R426
100
R421
1.6K
R420
1.6K
R417
560
R433
560
R419
560
R461
560
R418
560
R499
10 (1/4W)
R438
10 (1/4W)
R415
15K
R414
15K
R416
560
Q410
A1024Y
Q411
C3206Y
C404
270P
C410
180P
R412
220
R413
220
L204
0.5uH
R454
47 (1/4W)
R453
47 (1/4W)
R442
2.4K
Q401
KTC3114A
KTC3114A
C411
10/50V
Q408
A1024Y
Q409
C3206Y
R410
220
R411
220
Q404
2SA1859A
Q405
2SC4883A
R402
2.2
R403
2.2
R437
100
R439
100
R432
330
D402
1SS133
R440
OPEN
R445
750
R447
270K
D403
1SS133
R450
4.7K
R428
47K
R548
82(1/4W)
C510
10uF/100V
R549
82(1/4W)
C413
10uF/100V
VR203
220
VR204
220
D505
1SS133
D506
1SS133
D406
1SS133
12
CN41
12
CN51
D405
1SS133
8200UF/63V
8200UF/63V
C419
2200/16V
Q502
2SC3856
Q503
2SA1492
Q402
2SC3856
Q403
2SA1492
Q516
KSC1845
Q515
KSC1845
KSC1845
Q517
KSC1845
Q513
KSC1845
Q514
KSA992
Q512
KSA992
Q416
KSC1845
Q415
KSC1845
KSC1845
Q417
KSC1845
Q413
KSC1845
Q414
KSA992
Q412
KSA992
Q500
KSC1845
Q400
KSC1845
R571
R573
R572
R574
R495
R497
R496
R498
Q506
KTD2061Y
Q507
KTB1369Y
Q406
KTD2061Y
Q407
KTB1369Y
+
-
-
+
+
-
+
-
1
3
2
4
7
5
8
6
9
10
JK30
G900
J920
J921
J922
J923
J922
J923
1
2
J310
1
2
J311
1
2
J313
1
2
J314
1
2
J315
1
2
J316
1
2
J317
1
2
J318
J319
J345
J924
J925
J925
J926
J929
J930
J931
J932
J932
J613
J614
J615
J616
J617
J618
J619
J620
J621
J622
J611
G3
J404
R952
22K
R953
22K
D967
1SS355T
D968
1SS355T
R959 56K
C950
10V/470uF
R958
56K
Q911
A1271Y
Q912
A1271Y
A1271Y
Q915
MMBT5551
R924
47K
R925
47K
R928
2.2K
R929
2.2K
R933
4.7K
D964
1SS355T
C936
220/25V
R500
10K
R922
10(1W)
1
2
CN93
Q916
RT1N144C
R921
1W 22Ω
R747
4.7K
R746
4.7K
D970
1SS355T
1
2
CN11
D981
1SS355T
20
21
23
22
19
18
16
17
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
BN10
1
3
1
2
1
1
1
0
98
76
543
21
BN50
R501
10/1W
C520
0.047u
R401
10/1W
C440
0.047u
Q533
HVTKRC107S
Q532
HVTKRA107S
R550
47
R570
0
Q534
HVTKRC107S
Q536
HVTKRA107S
R580
47
D965
1SS355T
D966
1SS355T
Q913
A1271Y
A1271Y
R926
47K
R930
2.2K
R923
1R0(1W)
Q917
RT1N144C
RT1N144C
J623
J624
J624
J627
J626
J626
J625
J612
J628
J629
J630
J631
J632
J632
J633
J610
3
2
1
BN30A
J640
J641
J642
J642
J643
J645
32
1
BN60
ET904
J601
J602
ET903
P_FAIL
-VCC
+VCC
-VCC
+VCC
FL_IN
-VCC
+VCC
FR_IN
OC_DETECT
DC_PROTECT
DC_PROTECT
P_FAIL
NJW_DATA
NJW1112_LATCH
TUNER_SDA
TUNER_SCL
FUNC_MUTE
TUNER_MUTE
+3V3
TUNER_SCL
FUNC_MUTE
TUNER_MUTE
+3V3
-7.5V
+7.5V
+7.5V
ADC_R
ADC_L
HP_R
+12V
-12V
-12V
DC_PROTECT
CHGND
REC_MUTE
HP_L
RL_CH_OUT
RL_CH_OUT
RR_CH_OUT
RR_CH_OUT
AGND
NJW1194_LATCH
NJW_CLK
AGND
AGND
AGND
AGND
AGND AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND AGND
AGND
AGND
AGND
+12V
+12V
FAN1_ON
AGND
FAN1_ON
AGND
AGND
AGND AGND
AGND
OC_DETECT
AGND
NJW2753_R
NJW2753_L
AGND
SPK2
-12V
SPK1
SPK2
SPK1
SPK1
FAN2_ON
FAN2_ON
AGND
AGND
+VCC
+VCC
-VCC
-VCC
Harman Kardon
HK 3700 Service Manual
Page 103 of 109
HK37_MAIN_MP_CUP12609Z-A_131205.sch-3 - Mon Dec 09 11:48:17 2013
7
6
5
4
3
2
1
REVISION
SCHEMATIC DIAGRAM
SHEET
MODEL
DRAWING NO
DESIGN
CHECK
APPROVE
A
D
C
6
A
B
C
D
5
4
3
2
1
B
(JACK)
2
27
2
2
MULTI. LAB
ANAM
ISSUE
COAX1
OPT1
OPT2
TRIGGER
IR_IN
*IR IN/OUT & TRIGGER
* OPT & COAX ( Only HK3770 )
COAX1
OPT1
OPT2
IR_OUT
HK3770 ONLY
+12V
TRIGGER OUT
+3V3
REMOTE OUT
ST+5V
DGND
COAXIAL IN
DGND
TRIGGER OUT
+3V3
REMOTE OUT
ST+5V
DGND
COAXIAL IN
DGND
DGND
OPTICAL 1 IN
OPTICAL 2 IN
HK3700/3770
MP
20013.12.03
C601
180P
R600
75
RX
VCC
GND
OUT
32
1
JK62
RX
VCC
GND
OUT
32
1
JK61
R601
10K
R602
10K
Q604
RT1P144C
R620
47K
R618
220
R621
10K
Q602
RT1P141C
C619
0.01uF
R617
1K
R615
4.7
R614
4.7
Q601
KTA1266YT
D362
1SS355
D361
1SS355
Q603
RT1N141C
R363
10K
R613
10K
C618 0.01uF
R611
1.0
R610
1.0
D363
1SS355
4
3
21
IC601
KP1010B
R616
0
JK60
C602
0.1uF/50V
C603
0.1uF/50V
1
2
3
JK63
1
2
3
JK64
C600
0.1uF/50V
C605
0.1uF/50V
C610
0.1uF/50V
C615
0.1uF/50V
D600
CVD1SS355T
D601
CVD1SS355T
1
2
3
JK65
D365
1SS355
R619
47
11
10
9
8
7
6
5
4
3
2
1
CN60
C604
100/25V
+3V3
ST+5V
REMOTE_OUT
TRIGGER
+3V3
REMOTE_OUT
TRIGGER
+12V1
ST+5V
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
+12V1
DGND
DGND
DGND
+3V3
DGND
DGND
Harman Kardon
HK 3700 Service Manual
Page 104 of 109
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