Kenwood KDC-W241AY Service Manual page 30

AE
KDC-W241AY/W241GY/W3041A/W3041AY/W3041G
/W3041GY/W312A/W312AY/W312G/W312GY/W312SAY
1
CD PLAYER UNIT (X32-597x-xx)
2
3
CN2
S.GND
SGND 1
S.7.5V
S7.5 2
MOTOR
MOTOR 3
LO/EJ
LO/EJ 4
DRVMUTE
DRV MUTE 5
PON
PON 6
R230
100
CCE 7
DGND
DGND 8
BU5V
BU5 9
S3
4
LOE SW
LOE SW 10
8EJE SW
8EJE SW 11
R229
SRAMSTB 12
100
R227
MRST 13
100
R222
PIO0 14
100
MUTE L/R 15
Rch
RCH 16
A.GND
AGND 17
5 Lch
LCH 18
A.+8V
A8V 19
R228
100
SI(BUS3) 20
R221
100
SO(BUS2) 21
LOS SW
LOS SW 22
12EJE SW
12EJE SW 23
R226
100
BUCK 24
6
CAUTION : For continued safety, re place safe ty critical com po nents only with manufacturer's rec om mend ed parts
(refer to parts list).
Indicates safety critical com po nents. To reduce the risk of electric shock, leakage-cur rent or re sis tance mea sure -
ments shall be carried out (ex posed parts are ac cept ably in su lat ed from the supply cir cuit) be fore the ap pli ance is
returned to the customer.
• DC voltages are as measured with a high impedance volt me ter. Val ues may vary slight ly due to vari a tions be-
7
tween in di vid u al in stru ments or/and units.
30
X32-5970-02 (1/2)
AF
3.7V 3.8V
IC3
4ch BTL
16
DRIVER TR+
17
TR-
SLD+ 18
SLED IN
SLD+
/EJECT
SLD- 19
SLED OUT
SLD-
/LOAD
7.5V 20
VCC2
C24
21
GND
R30 100
22
22 CNT
0V 23
R31 13K
24
24 LO/EJ
R22 R23
1.6V
SD
5.6K 27K
25
SLIN
26
SLIN-
1.7V 27
SLIN+
28
TD TDIN
R20
39K
29
TDIN-
30
VCC
22
1.6V
24
CCE
D1
S4
3.5V
SRAMSTB
R51
12
22
C101 1
13
MRST
PIO0
14
IC6
MUTE L/R
3.5V
4
R
R52
10
5
L
SI(BUS3)
20
SO(BUS2)
21
R240
47
S1
Q13
S2
INVERTER
BUCK
24
ZDET
AG
3.5V 3.7V
15
FD+
14
FD-
13 SPDL+
SPD+ SPDL+
12 SPDL-
SPD- SPDL-
11 7.5V
VCC1
10 0V
GND
5.0V
0V
R29
9
MUTE
8
1K
7
GND
0V
R26 R25
1.5V
MD
68K 5.6K
6
SPIN
1.7V
5
1.7V SPIN-
4
SPIN+
3
1.8V
FDIN FD
R27
33K
2
1.7V FDIN-
1
7.5V BIAS
D1.5V REG.
IC5
4 3
ON/OFF NC
2 0V
4.0V VSS
5 1 1.5V
VIN VOUT 1.5V
D3.3V REG.
3
NC
2 0V
ON/OFF
VSS
3.8V
D3.3V
1 3.3V
VIN VOUT 3.3V
BU1.5V REG. DGND
4.7V
IC11
1.5V
IN OUT
GND
DM1.5V
0V
AH
A3.3V REG.
AD3.3V
IC7
C76
0.01
4 3 1.2V
OUT NIS
3.2V
2 0V
GND
8.0V
1 4.8V
5
CTL
IN
R218 C74
1K 0.22
R82
1K
R
C73 C60 R50
1 22 56
R83
1K
L
C61
0.1
Q11
SRAM
R223
R60 10K
STB
10K
R61 10K
SO
21 40
20
41
Q12
SI
R220
4.7K
R239
4.7K
24 42
BUCK
7
43
Q10
CCE
R219
4.7K
PIO0
14
MRST
R247
13
18K
3.3V
AI
1.5V
C54
R
3
1
R
R251
47K
C77
2.2
C58
1
0V 26
DVSS3 1
3.0V
27
RO 3.3V
28
DVDD3
29
DVR 1.7V
30
LO 3.0V
0V 31
DVSS3 2
3.3V 32
VDDT3 1
0V 33
VSS2
1.5V 34
VDD1 2
1.5V 35
VDDM1
0.1V 36
SRAMSTB
3.1V 37
RST
38
BUS0
0V
39
BUS1
40
40 BUS2 0.1V
41
41 BUS3
1M
42
42 BUCK
43
43 CCE
1
0V 44
TEST
R216
45
IRQ
0V
46
10K
AOUT3
47
AOUT2
0V 48
PIO0
49
PIO1
50
PIO2
Q10-12
5V-3.3V
LEVEL
DGND
SHIFT
1.5V