Kenwood KDC-X679 Service Manual page 27

AE
CD PLAYER UNIT (X32-5560-00/0-01) (X32-5590-00/0-01)
1
CN1 CN1
W10
D.OUT 24
S2
12EJE SW
12EJE-SW 23
S1
Q1
LOS SW
LOS-SW 22
CP2
100
CLK 21
2
DATA 20
A8V 19
L ch 18
A.GND 17
R ch 16
CP1
CP3
100K
100
MUTE R 15
MUTE L 14
Q3,5
LEVEL SHIFT
(3.3V 5.0V)
MRST 13
Q3
R6
22K
MSTOP 12
3
8EJE SW
∗
S4
RST
8EJE-SW 11
R5
LOE/LIM-SW 10 10
100
BU5V 9
D.GND 8
D.GND 7
D5V 6
R2
D5V 5
5.6
LO/EJ 4 24
1/2W
MOTOR 3 22
IC5
S7.5V 2
SW3.3V
S.GND 1 AVR
4
BU3.3V/2.5V AVR
IC15
5.0V
1
CTL1
2
VIN1
0V 3
GND1
R136
4
VIN2
22 5
CTL2
4.0V
5
IC14
A5V
AVR
6
IC1 : 91CW12AFG-4FV6
IC2 : UPD63712GC
IC3 : TC94A20F-010
IC4 : BA5824FP
IC5 : NJM2880U133
IC10 : PCM1793DB
IC13 : NJM4580V-LF
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts
list).
7
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 from the supply circuit) before the appliance is returned to the customer.
AF
LEVEL SHIFT
(3.3V 5.0V)
CP4
10K
85
84
Q4
83
Q5
82
65
86
S3
LOE/LIM SW
4.0V 3.3V
0V
3.3V
C94 R119
1.25V 0.01 10
10
NB1
9 3.3V
VOUT1
0V
8
GND2
7 2.5V
VOUT2
6 1.25V
3.8V
BN2
L.P.F
C101
8.0V
1000P
IC13
5.0V
8.0V
CENTER2.7V
CENTER2.7V
1.3V
8.0V
3.8V
R118
10
IC14 : TAR5S50-F Q1,4 : 2SK3018
IC15 : NJM2890R3325 Q3,5 : UMD9N
Q6 : UMD12N
D2 : DA204U Q7 : DTC124EUA
D3 : DAN202U Q8,11,12 : 2SB0970
D4,5 : MAZS0510L Q9,10 : DTC114YUA
AG
(DA) 3.3V
(MP3) 0/3.3V
DAC RST
TP32
Q7
R151 LEVEL SHIFT
100K
(3.3V 5.0V)
(DA) 0V
(MP3) 0/3.3V
51
NC
52
NC
53
NC
54
NC
55
NC
56
NC
57
NC
58
NC
59
NC
60
NC MECHANISM
61
CONTROL
NC
0V 62 MICRO PROCESSOR
DVSS
3.3V 63
NMI
64
R133
DVCC
1K
65
DAC MUTE
66
0V
C10
D-C PON
0.1
67
NC
TP33
68
NC
DAC
69
MUTE
NC
70
NC
71
NC
72
NC
73
NC
3.3/0V
74
NC
75
3.3V
NC
3.3V
TP28
3.3V
BOOT
R110 R112
3.9K 5.6K
R108 R111
3.9K 5.6K
CONSTANT
CURRENT
C75
220P
Q11
R148
5.6K
Q12
0V
C79
220P
R113 R114
3.9K 5.6K
R115 R116
3.9K 5.6K
SIGNAL LINE
UNIT No.
GND LINE
B LINE X32-5560-00
X32-5590-00
X32-5560-01
X32-5590-01
AH
KDC-X679
Q6
Q6
LEVEL SHIFT
(3.3V
47K
47K
X2
16.000MHz
TP29
0V
RESET
3.3V
2.4/0V 25
DVCC
24
3.3/0V
AM0
23
DSPSCLK1
3.3/0V
22
DSPRXD1
21
DSPTXD1
20
20SCLK0
(DA) 3.3V 19
20RXD0
(MP3) 3.3/0V 18
20TXD0
17
20LP
IC1 16
(DA) 3.3V
20CS
(MP3) 0/3.3V
15
NC
14
NC
0V
13
RZM
12
LZM
(DA) 0V
11
(MP3) 0/3.3V FOGUP
10
20INT
9
NC
8
(DA) 3.3V
NC
7
(MP3) 0/3.3V
20STBY
6
0ACK
5
20RST
4
NC
3
AVCC
2
AVSS
1
0V
VREFL
0V 3.3V
CP20
100K
IC10
24bit D/A CONVERTER
IC10
C71
0.1 5.0V
15
VCCC VCOM
0V 16
AGNDC VOUTR+
17
VOUTR-
VOUTL+
18
AGNDR
VOUTL-
0V 19
VCCR
AGNDL
20
VCCL
AGNDF
5.0V 21
VCCF
CP17 DGND
1K
3.3V
22
13 ZEROR
VDD
23
12 ZEROL
SCKI
0V 24
DEMP0
MUTE
EMPH
TP38
25
DEMP1
DATA
0V 26
FMT0
27
FMT1
0V
28
FMT2
3.3V
LRCK
S4
NO
YES
X32-5560-00 (1/2)
AI
5.0V)
3.8/0V
3.3V
11
RXD1
CP5
TP26
1K
12
13
TP27
TXD1
20
R18
100
18
3.3V
17
C14
16
0.1
CP18
100K
13
0V
12
R27
0V
100K
10
0V
7
6
3.3V
C15
5
0.1
3.3V
0V
C68
1
14
13
12
11 0V
10 5.0V
9
8
7
6 R128
RST 39
5
100
TP34
DAC CLK
4
65
R139 TP37
150 SD0
3
R140 TP35
150 BCLK
2
BCK
R141 TP36
150 LRCK
1
27