PORTABLE CD PLAYER
DPC-X347-S/X447MP-B
DPC-X447MP-S
SERVICE MANUAL
© 2004-8 PRINTED IN KOREA (K/K) 610
70%
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
KENWOOD-Corp. certifies this equipment conforms to
DHHS Regulations No. 21 CFR 1040. 10, Chapter 1, Sub-
chapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM.
SPECIFICATIONS
Format
System
......................................................................... Compact disc digital audio system
Laser
............................................................................................... Semiconductor laser
Audio
Frequency response ......................................................................... 20 Hz to 20 kHz, 3 dB
PHONE output level (32
, 1kHz) ...................................................................
.....................................................................................
7 mW + 7 mW
Line output/impedan ce
0.6 Vrms/22 k
Power supply
External DC supply (AC-45060A)........................................................................... DC 4.5 V
Commercially-available alkaline batteries (LR03) x 2 or 4 ............................. 1.5V x 2 (or 4)
Rechargeable batteries (NB-3A70) x 2 or 4 .................................................... 1.2V x 2 (or 4)
Battery life (Fully charge)
÷ At 0.1mW+0.1mW output (32 load).
÷ Standard value during continuous use/charging in an temperature of 20.
÷ Time of use may vary depending on battery maker, battery type, use environment,
and temperatute.
÷ The unit may not operate normally if manganese batteries are used.
Dimensions (W x H x D) ............................... 138 mm x 21.5 mm x 138 mm (5- 7/16" x 7/8" x 5- 7/16")
Weight (net)
.......................................................................................................... 185 g (6.5 oz)
Note:
KENWOOD follows a policy of continuous advancements in development. For this reason specifica-
tions may be changed without notice.
Approx. 7 Hours
Approx. 16 Hours
Commercially-available alkaline
batteries X 2
Commercially-available alkaline
batteries X 4
CD-DA
Approx. 4.5 Hours
Rechargeable batteries X 2
Approx. 11.5 Hours
Rechargeable batteries X 2 and
Commercially-available alkaline
batteries X 2
Format
System ......................................................................... Compact disc digital audio system
Laser .....................................................................................................Semiconductor laser
Audio
Frequency response ....................................................................... 20 Hz to 20 kHz, 3 dB
PHONE output level (32
, 1kHz) ...................................................................
Line output/impedance .................................................................................
7 mW + 7 mW
0.4 Vrms/22 k
Power supply
External DC supply (AC-45060A) .............................................................................DC 4.5 V
Commercially-available alkaline batteries (LR03) x 2 or 4 .............................1.5V x 2 (or 4)
Rechargeable batteries (NB-3A70) x 2 or 4 ................................................... 1.2V x 2 (or 4)
Battery life (Fully charge)
÷ Available time of operation when ASP is ON.
÷ At 0.1mW+0.1mW output (32 load).
÷ Standard value during continuous use/charging in an temperature of 20.
÷ Time of use may vary depending on battery maker, battery type, use environment,
and temperatute.
÷ The unit may not operate normally if manganese batteries are used.
Dimensions (W x H x D) ......................... 138 mm x 21.5 mm x 138 mm (5-7/16" x 7/8" x 5-7/16")
Weight (net) ....................................................................................................................... 185 g (6.5 oz)
Approx. 4.5 Hours
Approx. 9 Hours
Approx. 11.5 Hours
Approx. 20 Hours
Commercially-available alkaline
batteries x 2
Commercially-available alkaline
batteries x 4
Approx. 3.5 Hours
Approx. 6 Hours
Approx. 8 Hours
Approx. 15 Hours
Rechargeable batteries x 2
Approx. 8 Hours
Approx. 15 Hours
CD-DA
MP3
Rechargeable batteries x 2 and
Commercially-available alkaline
batteries x 2
DPC-X347
DPC-X447MP
Headphone jack
Phone jack
VOL
Stop key
Play key
Batteries cover
Open knob
Hold knob
DC jack
DPC-X347/X447
CONTENS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS ...............2
PC BOARD ..................................................................3
SCHEMATIC DIAGRAM ..............................................7
CLASS 1 LASER PRODUCT
LASER KLASSE 1
APPAREIL A LASER DE CLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
The marking of products using lasers (For countries
other than U.S.A., U.S.-Military and Canada)
The marking this product has been classified as Class 1.
It means that there is no danger of hazardous radiation
outside the product.
Location: Back panel
Headphone
(W01-1843-08)
AC adapter
(W08-0698-08): E
Remot control ass'y
(A70-1667-08): DPC-X347
(A70-1668-08): DPC-X447
ACCESSORIES
CONTENTS
CAUTIONS
3
AC
E
BD
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view): DPC-X347
D8
SW1
JK2
DC IN
JK4
REMOTE
CONTROL
JK5
LINE OUT
SW9
CON2
U5
SW3
SW4
SW6
D5
D6
CON1
BASS
VOLUME
STOP
PLAY
HOLD
R79
C103
L10
1
6
1
18
1
8
7
3
2
4
6
5
L7
L8
L1
L11
C89
C87
C90
L303
VR1
DOOR SW
BATT+
BATT-
CHARGE 1
CHARGE 2
C86
R40
120
40
21
C61
C67
L3
C48
C74
C75
C77
L16
L5
L15
R54
L2
C38
L4
R17
R80
C37
C34
C64
X2
16.9344MHz
C101
C102
R37
R38
C45
C44
C43
C42
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Foil side view): DPC-X347
4
F
GI
HJ
2
1
3
5
7
4
6
Q11
Q18
Q10
Q9
D3
D1
U2
U1
U7
U4
Q2
Q3
Q4
Q1
Q5
Q17
Q14
Q19
Q12
Q6
Q15
Q16
Q8
Q7
D31
D10
D9
U3
D11
D2
D7
D4
D30
L302
L301
C84
L6
R68
C114
R74
R73
R69
C22
C82
C83
C85
R18
C123
C122
C49
C73
R58
R59
C76
C63
R45
R51
R25
C104
C108
C107
C106
C105
C109
R44
R42
R43
C62
C99
R30
R48
R49
C11
R4
R65
R81
C13
C50
R31
C8
C51
C47
C68
C69
C70
R24
R27
R46
C96
C32
R34
C19
R14
TP1
C21
C28
C39
R22
C31
C46
R19
C16
R20
R13
R12
R70
R71
R66
TAP7
R90
X2
C35
C15
C9
C41
C10
C55
R61
R26
R78
R76
C17
C52
R89
R88
C119
R94
C113
C72
C78
R95
R77
1
4
8
5
C88
C54
R52
R35
R36
R33
R41
R64
R11
R6
R7
R8
R5
R10
R9
C33
C6
C7
R16
R28
C18
1
27
54
1
25
50
26
28
25
1
75
51
26
100
50
76
C93
C94
C95
C36
C30
R32
C24
C25
C23
C26
TAP5
TAP4
TAP3
R55
C27
R21
R23
TAP2
R75
R72
C100
1
16
48
49
64
32
17
33
C97
C14
C53
C71
R91 R87
R86
R47
R50 R83
R84
R85
R53
C66
C56
C57
C58
C59
C65
C60
C79
C40
C5
C2
R1
C1
R39
R2
R3
C3
R15
C4
C20
C12
C29
R82
R56
C98
C120
C112
C118
BE
BE
BE
BE
BE
BE
BE
B
E
B
E
B
E
BE
B
E
B
E
B
E
B
E
B
E
B
E
B
E
5
KM
O
LN
2
1
3
5
7
4
6
Refer to the schematic diagram for the value of resistors and capacitors.
PC BOARD (Component side view): DPC-X447MP
J3
J8
LINE OUT
REMOTE
CONTROL
VOLUME
J4
J32
U5
S4
S3
PLAY
HOLD
STOP
S2
J1
D10
DC IN
DOOR
D3
J2
S1
L6
L19
L18
VR1
C90
C89
C77
C75
R60
L1
L5
L26
L2
C65
C64
40
21
1
1
18
1
6
20
C104
X1
X2
C61
C57
C56
C55
C54
C117
C116
C60
C59
C58
C74
C87
C124
CHARGE
R48
R86
R50
R49
C67
L4
C70
BATT-
BATT+
C103
C105
C86