Kenwood DPX-6020 Service Manual page 22

AO
DOLBY NOISE REDUCTION UNIT (X30-3000-00)
QQ
3 7 63 1515 0
1
32
C3 820P
R3 47K
34
2
C1 820P
R1 47K
37
C2 820P
R2 47K
39
C4 820P
R4 47K
3
TE
L 13942296513
4
ME1
Lch
REV
Rch
REV
HD1
Rch
FWD
Lch
FWD
MODE SW
5
C
94 (TAKE UP)
A
K
94 (SUPPLY)
A
6
K
www
CAUTION : For continued safety, replace safety critical components only with manufacturer's
.
recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current
!
or resistance measurements shall be carried out (exposed parts are acceptably insulated
7
from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary slightly
due to variations between individual instruments or/and units.
AP
R7
430K
C5 R11
0.012 12K
3.5V
3.7V
C27 R5
33u10 150
31
NFI(L)
+
3.7V
32
RIN(L)
C14
1u50
3.7V 33
RIP
+
3.7V
34
FIN(L)
35
GND
0V
36
GND
3.7V 37
FIN(R)
0V 38
VREF
3.7V
39
RIN(R)
C28 R6
33u10 150
40
NFI(R)
+
3.7V
3.5V
C6 R12
0.012 12K
R8
P.B
430K
CN1
5 5 32
4 4 39
3 3 37
2 2 34
1 1 5
3
1
2
CN3
9 9
8 8
7 7
C
6 6
5 5
+5V
E
4 4
C
R17
3 3
120
2 2
E
1 1
SUB MOTOR
CN4
M
4 4 10
CM2
3 3 2
MAIN MOTOR
2 2
M
1 1
CM1
x ao
y
i
AQ
8
P.B
3.7V 0V 2.2V 3.7V
MS GVR
MAOUT
MSI
MSDET
VCC
PLAY : 0V
DPSS : 4.7V
IC1
EQ,DOLBY
MSOUT
S/R-MSGV
FWD : 0V
: 4.7V
REV
MTL OFF : 0V
MTL ON : 4.7V
F/R
120/70
NR ON/OFF
0.2V
MUTE OFF :
3.7V 3.7V 2.2V MUTE ON
Q Q
3 6 7 1 3
IC2
MOTOR DRIVER
1.7V
0.8V
0V
0V
4.2V
R20
680
C22
0.6V
0.01
R24
11 100
13
12
7
10 Q4
+
R18
22K
9
Q5
10K
10K
+14.4V
u163
.
AR
2 9 9 4 2 8
IC1 : HA12216F
IC2 : LB1641
Q1 : DTC144EK
Q2 : DTA144EK
Q4 : 2SB1443
Q5 : DTC114EK
3.7V
R25 C13
D1 : AMO1Z
1.6K 0.47u50
20
D2 : 02CZ4.3-X
+
C12
3.7V
19
+B
0.01
18 3.7V
17 3.7V
R14
220K
16 7.6V
A8V
C17
0.039
Q2
15
47K
15
Q1
PLAY : 4.3V
DPSS : 0V
14 47K
47K
14
A8V
13
13
12
12
11
11
DB NR OFF : 0V
DB NR ON : 4.7V
1 +14.4V
2
+7.5V
0V
: 4.7V
4
5
6
6
7 +5V
9
1 5 0 5 8 2 9 9 4
10
11
0.6V
12
13
0.8V
PACK IN SW
14
15
13
12
11
A8V
+
25
6
1
+14.4V
4
m
co
DPX-6020
AS
9 9
SIGNAL LINE
B LINE
47K
+
CN2
1 B.U
2 SRV+B
3 GND
4 MMT
5 SMT2
6 SMT1
7 PON5V
8 DGND
9 RREEL
2 8 9 9
10 FREEL
11 MODE3
12 MODE2
13 MODE1
to
S1
X14-
CN2
14 PACK DET
15 EQMUTE
16 MSC
17 MUSIC
18 F/R
19 MTL
20 DOLBY
21 A8V
22 Lch
23 AGND
24 Rch