Mute Control; From Codec - Harman Kardon HK 3700 Service Manual

6
Harman Kardon
D
C
2012.03.01
R1554
D1500 1SS355
ST+5V
1K
D1501 1SS355
+12V
Q1501
T1N144C
FUNC_MUTE
Q1505
HP_MUTE
T1N144C
REC_MUTE
B
Q1506
T1N144C
A
5
R1598
OPEN
+12V
DC PROTECTOR
Q1510 R940=1.5K
RT1P144 Operating: +5.0V~ , -5.0V~
MMBT5551 MMBT5551
Q1511 Q1512
DC_PROTECT_IN
R1597
OPEN
+12V
SHORT_PROTECT_IN
OVERLOAD DETECTION
R1565
AGND
T1501
4.7K PROTECT TEST
R1566
(SHORT)
+12V T1500
4.7K

MUTE CONTROL

FUNC_MUTE TUNER_MUTE1 TUNER_MUTE
-12V
Q1502
R1556
R1561
1M
T1N144C -12V
100K
HP_MUTE
Q1504
R1558
1M
T1N144C
REC_MUTE
Q1507
R1591
1M
T1N144C
+8V
+12V
CVILM7808RTRL
IC1502
D1502
1 3
IN OUT
HVD1SR159-200
2
AGND
-8V
-12V
CVILM7908RTRL
IC1503
D1503
2 IN OUT 3
HVD1SR159-200
GND
1
AGND
4 3
R1568
CURRENT_DET
POWER_FAIL 10K
* 3 Step Detect *
Q1517
3.8A : VCC 45V->41V
MMBT5551
4.3A : VCC 41V->25V
5.96A: Protect
D1504 AGND
1SS355
Q1515
MMBT5401 Q1516
MMBT5551
AGND

FROM CODEC

R1504
R1503 6.8K(HK3770)
0(HK3770)
3.3K(HK3770) R1505 C1500
D_FR- R1500 390P(HK3770)
1.5K(HK3770)
R1501
3.3K(HK3770) R1502 1.5K(HK3770)
D_FR+
5 6 7
AGND
4 3 2
R1512 3.3K(HK3770) -7V
R1513
D_FL+
1.5K(HK3770)
R1514 3.3K(HK3770) R1515
D_FL-
1.5K(HK3770)
R1516 R1517
6.8K(HK3770) 0(HK3770)
+7V
+12V
R1599
$$$10751
150(HK3770)
-7V
HK3770 ONLY
2
OC_DETECT
DC_PROTECT
OVERLOAD
P_FAIL
TUNER_SDA TUNER_SDA
TUNER_SCL TUNER_SCL
FUNC_MUTE FUNC_MUTE
TUNER_MUTE1 TUNER_MUTE
+3.3V_DC
+3.3VC
FAN1_ON FAN1_ON
L1500
-7VA
-7V
CLZ9R005V
+7VA
+7V
+12V +12V
-12V -12V
AGND
SPK2 SPK2_CONT.
CHGND
SPK1 SPK1_CONT.
REC_MUTE REC_MUTE
AD_RIN AD_RIN
AGND
AD_LIN AD_LIN
AGND
FAN2_ON
FAN2_ON
2013.08.08
AUDIO_L
AUDIO_L
AGND
AUDIO_R
AUDIO_R
MAIN_VOL_DATA MAIN_VOL_DATA
NJW1112_LATCH
NJW1112_LATCH
NJW1194_LATCH
NJW1194_LATCH
MAIN_VOL_CLK MAIN_VOL_CLK
HPL-OUT DAC_FR
AGND
DAC_FL
HPR-OUT
HP_L
DAC_FR
AGND
HP_R
DAC_FL
2013.08.08
AGND
C1559
22P(HK3770)
R1506 DAC-R
100(HK3770) C1509 DAC-R
DAC_FR 2013.08.07
+7V 2013.08.07
10/16V(HK3770) +9V
+9V
C1556 C1558
8
50V/1uF(HK3770) 50V/1uF(HK3770)
7 6 5 4 3
AGND
1
(HK3770)
R1511
DAC-L
DAC-L
100(HK3770) 8 9 10 11 12
DAC_FL
C1513
C1508
10/16V(HK3770)
390P(HK3770)
C1567
22P(HK3770)
HK3770 ONLY
+9V
AGND
1
MODEL
DESIGN
C.D.W
2013.11.27 2013.11.27 2013.11.27
1
HK 3770 Service Manual
Bluetooth
2013.08.29
+3.3V_BT NET_3.3V
17
2013.08.08
CHGND
16
ST+5V
CHGND
AGND 15
CHGND
CHGND
14
+5V_BT
13
BT_STATUS BT_STATUS
12
BT_STATUS_PAIR BT_STATUS_PAIR
11
BT_FN3
2 1 FN3
10
BT_AUDIO_EN BT_AUDIO_EN
9
FN2
8 BT_FN2
FN1 BT_FN1
7
13 14
AGND
6
BT_FL BT_FL
5
AGND
4
BT_FR BT_FR
3
AGND
2
BT_PWR_CTL
BT_PWR_CTL
1
2013.08.08
AGND
AGND
ISSUE
MP ANAM
MULTI. LAB
2013.11.27
REVISION 2 4 6
3 5 7
SCHEMATIC DIAGRAM
SHEET
14
HK3700 /3770
CHECK APPROVE DRAWING NO
S.K.S K.J.K
Page 115 of 120
(VOLUME_FILTER)
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C
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