Kenwood DPC-181, DPC-183, DPC-381, DPC-382, DPC-383 Service manual

PORTABLE CD PLAYER

VOLUME

PHONES

LINE OUT

DC-IN

REPEAT

P.MODE

OPEN

VOLUME

PHONES

LINE OUT

OFF

DPC-181/183/381/382/383

SERVICE MANUAL

© 1997-7/B51-5331-00 (K/K) 3188

Knob
(K27-2244-08)

CD door *
(A52-)

Knob
(K27-2245-08)

Display lens
(B10-2416-08)

Knob (OPEN)
(K27-2243-08)

Knob (REPEAT)
(K27-2253-08)

Knob (SKIP/SEARCH)
(K27-2256-08)

Knob (SKIP/SEARCH)
(K27-2246-08)

Knob (P. MODE)
(K27-2252-08)

Knob (PLAY/STOP)
(K27-2247-08)

Top cabinet*
(A02-)

Variable resistor
(R31-0086-08)

Illust is DPC-181/381/382.

CD door lens *
(B10-)

CD door *
(A52-)

Display lens *
(B10-)

Knob (OPEN)
(K27-2251-08)

In compliance with Federal Regulations, following are reproduc­tions of labels on, or inside the product relating to laser product
safety.

Knob (SKIP/SEARCH)
(K27-2257-08)

Variable resistor
(R31-0086-08)

Knob (PLAY/STOP)
(K27-2255-08)

KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.

DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.

* Refer to parts list on page 13.

Illust is DPC-183/383.

DPC-181/183/381/382/383

CONTENTS / ACCESSORIES

Contents

CONTENTS / ACCESSORIES ....................................2

CIRCUIT DESCRIPTION.............................................3

PC BOARD ..................................................................5

SCHEMATIC DIAGRAM..............................................9

Model feature list

MODEL

FEATURE

OPTICAL

OUT

LINE OUT

REMOTE

TERMINAL

DASC
KNOB

B.B KNOB

DPC-181

K P

‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

E T M M2 X K P E T M X K P E T M M2 K P E T M X K P E T M M2

‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

‡ ‡ ‡ ‡ ‡ ‡

DPC-183

EXPLODED VIEW .....................................................13

PARTS LIST...............................................................15

SPECIFICATIONS.....................................................19

DPC-381

‡ ‡

‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

DPC-382

DPC-383

B.BOOST

P.MODE

P.MODE

‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

Accessories

AC adapter(110~120V /220-240V 50/60Hz)...............(1)

(W08-0657-08) : KP
(W08-0658-08) : E
(W08-0659-08) : T
(W08-0660-08) : X
(W08-0667-05) : M,M2

Rechargeable battery.....................(1)

(W09-1239-05) : KP
(W09-1240-05) : ETMXM2

Headphone ....................................(1)

(W01-0924-05) : DPC-181(KP)
(W01-0943-05) : DPC-381(KP)
(T17-0015-08) : DPC-383(M)
(T17-0016-08) : DPC-383(KPETX)

‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡

Innerphone..........................................(1)

(W01-0925-05) : DPC-181(MXTE)

(W01-0923-05) : DPC-181(M2)

Remote control...............................(1)

(A70-1111-08) :DPC-181 (M2)

DPC-183 (M)

Car cassette adapter......................(1)

(W01-0922-05) : DPC-382

DPC-183(X)
DPC-381(TE)

DPC-183(M)
DPC-381(M,M2)
DPC-383(M2)

Audio cable....................................(1)

(E30-2782-05) : DPC-381(E.T)

Remote control...............................(1)

(A70-1190-05) : DPC-381/383 (M,M2)

Car battery adapter........................(1)

(W01-0921-05) : DPC-382

2

AC plug..........................................(1)

(E03-0115-05) : M,M2

DPC-181/183/381/382/383

CIRCUIT DESCRIPTION

1. Microprocessor : (MN171603 H3)

1–1 Pin description

Pin No. Pin name I/O Function description Active

1, 2 – I NOT USED

3 AVSS – GND
4 BBS O BBS CONTROL SIGNAL OUTPUT ON = "H"
5 DATA O REMOTE CONTROL SIGNAL OUTPUT

6, 7 – NOT USED

8 KEY I KEY INPUT

9 HOLD I HOLD ON/OFF CONTROL ON = "H"
10 ESP I ESP ON/OFF CONTROL ON = "L"
11 LOW BATTERY I BATTERY VOLTAGE DETECTION LOW BATT. = "H"
12 AVDD – SUPPLY VOLTAGE

13~15 VLC1~VLC3 – LCD DRIVER BIAS CONTROL
16~19 COM1~COM4 O LCD COMMON SIGNAL OUTPUT (COMMON1~4)
20~33 SEG0~SEG13 O LCD SEGMENT SIGNAL OUTPUT (SEG0~SEG13)
34, 35 SEG14, 15 O NOT USED

36 MODE-M I MEMORY SELECT 4M = "H" OTHER = "L"
37 D-CNT I DIGITAL OUT CONTROL OUT = "H" (ESP OFF)
38 MODE-A I USE CUE/REV MODE
39 MODE-B I NOT USED
40 STDBY O NOT USED

41~44 – – NOT USED

45 DOOR OPEN I DOOR SWITCH DETECTION OPEN = "H"
46 PSET I PICKUP INITIAL POSITION
47 BTCHK I BATT. VOLTAGE DIRECTION.

48~51 – I NOT USED

52 POWER O POWER SUPPLY CONTROL.
53 BAT O BATTERY CONTROL OUTPUT CHARGING = "H"
54 D MUTE O MUTE CONTROL ON = "H"
55 SBCK O SUB CODE READ TIMING CLOCK FOR MN662740RE
56 FCLK I FRAME CLOCK SIGNAL from MN662740RE
57 FLAG I FLAG SIGNAL INPUT from MN662740RE
58 IPFLAG I CORRECTION = "H"
59 – I GND
60 STAT I STATUS SIGNAL from DSP
61 SENSE I SENSITIVE SIGNAL from DSP
62 TLOCK I TRACKING SERVO IN = "L"
63 FLOCK I FOCUSING SERVO IN = "L"
64 MCLK O COMMAND CLOCK for MN662740RE
65 MDATA O COMMAND DATA for MN662740RE
66 MLD O COMMAND DATA LATCH (LOAD) for MN662740RE
67 – O NOT USED
68 RST I SYSTEM RESET INPUT
69 X1 I GND
70 X2 O NOT USED
71 Vss – GND
72 – O NOT USED
73 SMCK I EXTERNAL SYSTEM CLOCK = 4.2336MHz

3

DPC-181/183/381/382/383

(KSM-542AAA)

/ / /

/ / /

/ / /

IC5

SHOCKPLOOF
SM5859AF

IC6

DRAM

FROM IC4 (Rch)

J105
EXCEPT
DPC-381/383 (M2 TYPE)

LINE OUT

J102

Rch
Lch

H. P JACK

NJM2073M

VOLUME

DIGITAL OUTPUT

J104

OPT. OUT

DPC-381/383 (M2 TYPE)

J103

REMOTE

DPC-181 (M2 TYPE)
DPC-183 (M TYPE)
DPC-381/383 (M/M2 TYPE)

MN171603
HFC

AN8819

NFB-M

LMT.
SW

AN8806SB

DPC-381/382/383 ONLY

Lch

CIRCUIT DESCRIPTION

Pin No. Pin name I/O Function description Active

74 VDD – SUPPLY VOLTAGE (ESP ON = 4.2V / OFF = 3.2V)
75 LRST O RESET SIGNAL for MN662740RE, SM5859AF
76 SQCK O SUBQ READ TIMING CLOCK to MN662740RE
77 SUBQ I SUBQ DATA from MN 662740RE
78 – O NOT USED
79 YMLD O COMMAND DATA LATCH (LOAD) for SM5859AF
80 YMCLK O COMMAND CLOCK for SM5859AF
81 ZSENSE I SENSITIVE SIGNAL from SM5859AF
82 YMDATA O COMMAND DATA for SM5859AF
83 BLKCK I SUBQ READ REQUEST SIGNAL IN.
84 – I GND

1-2 Voltage of pin No. 8 (IC3) / Key function.

KEY V Key of unit (Remocon)

0.00

0.75

1.00

1.23

1.43

1.69

2.13

2.55

3.0

PLAY/PAUSE (6)
STOP (7)
UP (¢)
B. BOOST / P. MODE
DOWN (4)
REPEAT
MUTE (Only Remocon)
KEY OFF

1-3 Microprocessor periphery block diagram

4

ACEBD

PC BOARD(Component side view) : DPC-181/381/382

1

2

3

4

5

6

Refer to the schematic diagram for the value of resistors and capacitors.

7

5

F G IH J

PC BOARD(Foil side view) : DPC-181/381/382

1

2

3

4

5

6

7

Refer to the schematic diagram for the value of resistors and capacitors.

6