Kenwood DPC 191 Service Manual

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PORTABLE CD PLAYER

DPC-191/391/492

SERVICE MANUAL

KENWOOD

© 1998-5/351-5427-00 (K/K) 2664

Knob
(K27-2316-08)

Knob
(K27-2317-08)

Inner display lens I -I .
(B10-2417-08)

Display lens \\
(B10-3429-08)-."\d
a».

Knob .
(K27-2315-08)-

Knob Knob

(K27-2318-08)

Format
System .
Laser

Audio

Frequency response ................................................................

PHONES output level (160, 1 kHz)

Line output/impedance .....................
Power supply

External DC supply ...................................

Rechargeable batteries (NB-88) x 2 or 4

Commercially-available alkaline batteries (LRG/AA) x 2 or 4

Battery life (continuous repeat playback)

(K27-2319-08)

SPECIFICATIONS

CD door *
(A52-)

(A02-)

DC jack
(E03-0356-08)

Line out jack
(E11-0354-08)

Phone jack
(E11-0372-08)

Variable resistor
(R31 -0086-08)

* Refer to parts list on page 12.

Compact disc digital audio system
....................... Semiconductor laser

.............................................................. 20 Hz to 20 kHz, :3 dB

.10 mW +10 mW
0.6 Vrms/1 k9

.4.5Vto 6 V DC
.DC 2.4V
....D03V

(Figures inside parentheses show the performance when the D.A.S.C. is ON.)

Commercially-available alkaline batteries (LR6/AA) x 2
Commercially-available alkaline batteries (LRG/AA) x 2
Commercially-available alkaline batteries (LRG/AA) X 4
Commercially-available alkaline batteries (LRG/AA) x 4
Rechargeable batteries (NB-88)x2.
Rechargeable batteries (NB-88)x2
Rechargeable batteries (NB-88)x4.
Rechargeable batteries (NB-88)x4
Dimensions (W x H x D) ..............

Weight (net) ................................................................................

Note:

Approx. 10 (8) Hours (DPC-391/492)
.......... Approx. 10 Hours (DPC»191)
Approx. 22 (175) Hours (DPC-391/492)
.......... Approx. 22 Hours (DPC»191)
Approx. 4 (3) Hours (DPC»391/492)
........ Approx. 4 Hours (DPC-191)
Approx. 9 (6) Hours (DPC-391/492)
..... Approx. 9 Hours (DPC-191)
138 mm X30 mm x 157 mm
(5 » 7/16" x1 - 3/16" x 6 » 3/16")

................................................................................ 270 g (9.5 oz)

KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.

In compliance with Federal Regulations, following are reproduc-
tions 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, Subchapter J.

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

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DPC-191/391/492

CONTENTS / ACCESSORIES

Contents
CONTENTS / ACCESSORIES ..
CIRCUIT DESCRIPTION...
PC BOARD ...................
SCHEMATIC DIAGRAM.

Model feature list

EXPLODED VIEW..
PARTS LIST
SPECIFICATION

'xI'cnbix)

BETTE» Ski M O D E |_ DPC-1 91 DPC-391 DPC-492
FEATURE711"""a K P T M M2 x K P M K P
LIN E O UT O O O o o O o O O O 0
REMOTE TERMINAL 0 O
D As O K N O B O O O O o
B . B K N O B O O O O O O
B.BOOST PIMODE (TACT SW) 0 O O O O
P.MODE (TACT SW) 0 O O O O 0
Accessories
f
Car battery adapter ......... (1) AC adapter ..................... (1)

%

AC plug adapter .............. (1)
(E03-0115-05) : M

|nnerphone(LONG) ......... (1)
(Wm-092505) : E, M

(WOT-092105) : DPC-492(K4,P4)

(W08-0657-08) : K1 ,K3,K4,P1 ,P3,P4
(W08-0658-08) : E
(W08-0675-08) : M

Rechargeable battery .....(1)
(W09-1240-05) : M

Car cassette adapter ...... (1)
(W01-0922-05) : DPC-492(K4,P4)

Headphone ..................... (1)
(WO1-0924-05) : K1,K3,P1,P3
(WO1-0943-05) : K4,P4

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DPC-191/391/492

CIRCUIT DESCRIPTION

1. Microprocessor : (MN171603 HFJ1)

1-1 Pin description

Pin No. Pin name l/O Function description Active
1, 2 - I NOT USED
3 AVSS - GND
4 BBS O BBS CONTROL SIGNAL OUTPUT ON = "H"
5 DATA 0 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 0 LCD COMMON SIGNAL OUTPUT (COMMON1~4)
20~33 SEGO~SEG13 0 LCD SEGMENT SIGNAL OUTPUT (SEGO~SEG13)
34, 35 SEG14,15 0 NOT USED
36 MODE-M I MEMORY SELECT 4M = "H" OTHER = "L"
37 D-CNT I NOT USED OUT = "H" (ESP OFF)
38 MODE-A I USE CUE/REV MODE
39 MODE-B I NOT USED
40 STDBY 0 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 0 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 | 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 - 0 NOT USED
68 RST I SYSTEM RESET INPUT
69 X1 I GND
70 X2 0 NOT USED
71 V35 - GND
72 - 0 NOT USED
73 SMCK I EXTERNAL SYSTEM CLOCK = 4.2336MHz
3