Kenwood KDC-348U Service Manual page 36

AO
KDC-348U/4751SD/BT41U/BT648U
/U4549/U4549SD/U549BT/X395/X695
1
2
3
4
5
6
7
36
X32-6250-02 (1/2)
AP
CD PLAYER UNIT (X32-6250-02) (A/2)
MECHA. (X92- )
SLED OUT
/LOAD
DM2
TP28
M
5
6
TP26
LOADING &
SLED IN
SLED
/EJECT
MOTOR
SPDL+
DM1
TP33
M
4
3
TP31
SPINDLE
SPDL-
3
MOTOR
CN2
TP57 S.GND
SGND 1
TP56 S.7.5V
S7.5 2
TP58 MOTOR
MOTOR 3 3
TP59 LO/EJ
LO/EJ 4 4
TP60 DRVMUTE
DRV MUTE 5 5
TP70 PON
PON 6
R52 100
TP79 CCE
CCE 7
TP80 DGND
DGND 8
TP81 BU5V
BU5 9
LOE SW 10 10
8EJE SW 11 11
R53
TP77
100
SRAMSTB
SRAMSTB 12 73
TP68 MRST
MRST 13 69
R54
TP78 PIO0 100
P100 14 53
TP69 MUTE L/R
MUTE L/R 15
TP64 Rch
RCH 16 R 1
TP67 A.GND
AGND 17
TP65 Lch
LCH 18 L
2
NC 19 TP66 NC
R57
100
TP73 SI
SI(BUS3) 20 65
R55
TP74 SO
SO(BUS2) 21 64
100
LOS SW 22 22
12EJE SW 23 23
R56
TP61 BUCK
BUCK 24 66
100
TP512 D3.3
D3.3 25
TP513 R69
BSIF ST REQ 100
BSIF ST REQ 26 54
R70
TP514
100
BSIF GATE
BSIF GATE 27 55
R71
TP515
100
BSIF DATA
BSIF DATA 28 57
R72
TP516
100
BSIF BCK
58
BSIF BCK 29
TP517 R73
100
BSIF LRCK
BSIF LRCK 30 59
(X32- ) (B/2)
S1
TP501 LOS SW
LOS
LOS SW TP63
SW
S2
TP502 12EJE SW
TP62
12EJE SW
12EJE
SW
TP75
TP504
8EJE SW
GND
LOE SW
TP76
LOE/LIM
SW
AQ
3
4ch BTL DRIVER
IC3
24
7.5V 1
IN1
POWVCC1 0V
0V 2 23
POWGND1 CNT
22
3
SLIN
3 VO1- 0V
4 21
4 VO1+ LDIN
20
5
BIASSW
5 VO2-
6
6 VO2+
19
IN3
18
7
IN4
T- VO3-
8
T+ VO3+
17
9
BIAS
F+ VO4-
16
10
PREGND
F- VO4+
15
MUTE34
0V 11
14
POWGND2
4.3V MUTE2
7.5V 12
13
POWVCC2
MUTE1
1
C101
1
BU1.5V/D3.3V
REG.
IC5
TP520
1.5V
BU1.5 4
VOUT2
4.0V 5
VIN
2
D3.3V
BU1.5V
IC3 : BD8222EFV
IC4 : JCV8023
IC5 : XC6415S001P1
Q1 : 2SA2188-T1(E)
Q14 : RUE003N02
22
D2 : DAP202U
D3,4 : DA204U
23
11
10
AR
3
1.7V TP345
31
R58 100
3
TP346
29
R59 200K
4
0V
R50
36K
27
TP343
R49
TP344
26
39K
1.7V
0V
R51
1K
1
C103 0.1
TP90
AGND
D1.5V
OUTPUT
TP92
D1.5V
Q14
D1.5V
TP89
D3.3V
3
VOUT1 D3.3V
3.3V
2 0V
VSS
1
3.3V
EN1
TP91 DGND
TP338
SIGNAL LINE
GND LINE
B LINE
AS
D1.5V
TP95
ZDET 0V
0V 41
DVSS3R
1.6V
42
R RO
R43 4.7
43
DVDD3R
R44 4.7
44
DVDD3L
45
L LO 1.6V
46
DVSS3L
47
XVSS3
X1
16.934MHz 48
XI
R40
680
49
XO
3.3V 50
XVDD3
1.5V 51
VDD1-2
52
VSS2
53
53 PIO0
54
54 PIO1
55
R74
55 PIO2
10K
56
PIO3
57
57 PIO4
58
58 PIO5
59
59 PIO6
60
PIO7
2
C61
0.1
2
D3.3V
D1.5V
BU1.5V