Kenwood K-323 Service Manual page 16

K
K-323
SIGNAL LINE
GND LINE
B LINE
.3VA
.8VD
72
71
70
69
68
SW EJECT
67
66
STOP HOME
65
64
T53
R1
63
TKIN
68K
62
61
DGND
60
59 T54
R3
8.2K
58
SLIN
R7
57
TTIN
15K
R119
56
BIAS
1K
R2
55
FCIN
30K
54
53
C138
52
100P
51
DGND
50
+1.8VA
C76
49
48
1
AGND
47
46
+3.3VA IC
45
T56
44
LD1 LAS
43
LD LAS
C67
42
T57
0.033
41
MD LAS
C75
40
R84 24.9K 0.1
39
C68 1000P
C66 1000P
38
C85 1000P
AGND
37
D
A
16
CD (3/3)
L
R68
0
USB+
R69
USB-
0
+3.3VD
CRQ
L4
DGND
+3.3VD
DGND DGND
+3.3VA IC
EJECT
L5
AGND
+3.3VA
AGND DGND
L1
+3.3VD RESETN
DGND DGND
DGND
IC12
+1.8VA
L12 L10
+1.8VD VOUT VIN
GND
DGND AGND
DGND
+3.3V AUDIO
+8V SW
IC15
28
1
VREF
FMD
27
2
BIAS2
R120
REV
0 3
LDCONT
4 26
MUTE PS SLIN2
25
SLIN1
24
BIAS1
DGND R150
23
8.2K
5 TTIN2
FCIN SL IN
22
TTIN1
R149
6
30
TKIN SP IN
GND2
8.2K
7
21
VCC
MUTE
29
20
GND1
VCC34
MGND
8
VCC12
9
LDO-
19
10
GND
LDO+
11 18
TK- TKO- SP+
12 17
TK+ TKO+ SP-
13 16
FC- FCO- SLO+
14 15
FC+ FCO+ SLO-
R17 100
STOP HOME
R18 100
SW EJECT
R46 100
SW1
+3.3VD
R41
0
C79 C33
1000P 0.01
R65
L11
0
C77
1000P
DGND H DGND T DGND
M
CN23
L3
1 D+
2 D-
3
DGND
R34 1K
SCL 4 I2C SCL
R35 1K
SDA 5 I2C SDA
R33 1K
6 I2C CRQ
7 DGND
8 MCLK
9 BCLK
R36
10 SDO/SPDIF
100
R123
11 LRCK
100
12 EM EJECT
13 DGND
14 AUDIO R
15 GND AUDIO
R124
16 AUDIO L
GND AUDIO
100
17
SW1 CD INSERT
L22
18 RESTEN
1K
+3.3V +3.3V 19 3V3VIN
20 MGND
MGND
L18
21 8V MOTOR
22 8VMOTOR
MGND
R175
10
CAUTION: For continued safety, replace safety
critical components only with manufacturer's
recommended parts (refer to parts list).
GND DGND MGND
cates safety critical components. For continued
AUDIO
protection against risk of fi re, replace only with
same type and rating fuse(s). To reduce the risk
of electric shock, leakage-current or resistance
measurements shall be carried out (exposed
parts are acceptably insulated from the supply
BIAS
circuit) before the appliance is returned to the
customer.
AGND
R155
SLIN
R152 8.2K
The DC voltage is an actual reading measured
8.2K
with a high impedance type voltmeter with no
R156
TTIN signal input. The measurement value may vary
R154 15K
depending on the measuring instruments used
15K
or on the product.
MGND
MGND
SP+ (RED)
SP- (BLK)
SLO+ (ORG)
SLO- (YEL)
MGND
GND (GRN)
RESETSW (GRN)
SW2 (WHT)
SW1 (RED)
GND (BRN)
DGND
L21
0
L9
0
C80
1000P
DGND GND AGND DGND
AUDIO
K-323 (1/5)
N
MAIN-
CP101
U-6
3/5
O
1
2
3
indi-
4
5
6
7