Kenwood DPC-492, DPC-191, DPC-391 Service manual
Format
System .................................................................................................................................. Compact disc digital audio system
Laser ............................................................................................................................................................ Semiconductor laser
Audio
Frequency response ............................................................................................................................... 20 Hz to 20 kHz, ±3 dB
PHONES output level (16Ω, 1 kHz ) ..................................................................................................................10 mW + 10 mW
Line output/impedance .......................................................................................................................................... 0.6 Vrms/1 kΩ
Power supply
External DC supply ................................................................................................................................................. 4.5V to 6 V DC
Rechargeable batteries (NB-88) x 2 or 4 .........................................................................................................................DC 2.4 V
Commercially-available alkaline batteries (LR6/AA) x 2 or 4.............................................................................................DC 3 V
Battery life (continuous repeat playback)
(Figures inside parentheses show the performance when the D.A.S.C. is ON.)
Commercially-available alkaline batteries (LR6/AA) x 2 .............
......................................................
. Approx. 10 (8) Hours (DPC-391/492)
Commercially-available alkaline batteries (LR6/AA) x 2 ..................
......................................................
........ Approx. 10 Hours (DPC-191)
Commercially-available alkaline batteries (LR6/AA) x 4 ......
......................................................
... Approx. 22 (17.5) Hours (DPC-391/492)
Commercially-available alkaline batteries (LR6/AA) x 4 ..................
......................................................
........ Approx. 22 Hours (DPC-191)
Rechargeable batteries (NB-88) x 2 .........................................
......................................................
....... Approx. 4 (3) Hours (DPC-391/492)
Rechargeable batteries (NB-88) x 2
......................................................
............................................................ Approx. 4 Hours (DPC-191)
Rechargeable batteries (NB-88) x 4 ..........................................
......................................................
...... Approx. 9 (6) Hours (DPC-391/492)
Rechargeable batteries (NB-88) x 4
......................................................
............................................................ Approx. 9 Hours (DPC-191)
Dimensions (W x H x D) .....................................................................................................................138 mm
x
30 mm x 157 mm
(5 - 7/16"
x
1 - 3/16" x 6 - 3/16")
Weight (net) ................................................................................................................................................................270 g (9.5 oz)
Note:
KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.
VOLUME
PHONES
LINE OUT
DC-IN
REPEAT
P.MODE
OPEN
PORTABLE CD PLAYER
DPC-191/391/492
SERVICE MANUAL
Knob
(K27-2316-08)
Knob
(K27-2317-08)
Inner display lens
(B10-2417-08)
Display lens
(B10-3429-08)
Knob
(K27-2315-08)
© 1998-5/B51-5427-00 (K/K) 2664
CD door *
(A52-)
Top cabinet *
(A02-)
DC jack
(E03-0356-08)
Line out jack
(E11-0354-08)
Phone jack
(E11-0372-08)
Knob
(K27-2318-08)
Knob
(K27-2319-08)
* Refer to parts list on page 12.
SPECIFICATIONS
In compliance with Federal Regulations, following are reproductions 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.
Variable resistor
(R31-0086-08)
DPC-191/391/492
CONTENTS / ACCESSORIES
Contents
CONTENTS / ACCESSORIES...................................2
CIRCUIT DESCRIPTION............................................3
PC BOARD.................................................................5
SCHEMATIC DIAGRAM.............................................7
Model feature list
EXPLODED VIEW....................................................11
PARTS LIST .............................................................12
SPECIFICATIONS........................................Top cover
MODEL
FEATURE
LINE OUT
REMOTE TERMINAL
DASC KNOB
B.B KNOB
B.BOOST P.MODE (TACT SW)
P.MODE (TACT SW)
Accessories
Car battery adapter.........(1)
(W01-0921-05) : DPC-492(K4,P4)
DPC-191
K P
‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡
‡ ‡ ‡ ‡ ‡ ‡ ‡
‡ ‡ ‡ ‡ ‡ ‡ ‡
E T M M2 X K P K P X
‡
AC adapter .....................(1)
(W08-0657-08) : K1,K3,K4,P1,P3,P4
(W08-0658-08) : E
(W08-0675-08) : M
DPC-391
M
‡
‡
‡ ‡ ‡ ‡ ‡
‡ ‡ ‡ ‡ ‡
‡
‡
DPC-492
AC plug adapter..............(1)
(E03-0115-05) : M
Innerphone(LONG).........(1)
(W01-0925-05) : E, M
Rechargeable battery.....(1)
(W09-1240-05) : M
Headphone.....................(1)
(W01-0924-05) : K1,K3,P1,P3
(W01-0943-05) : K4,P4
Car cassette adapter......(1)
(W01-0922-05) : DPC-492(K4,P4)
2
DPC-191/391/492 D
CIRCUIT DESCRIPTION
1. Microprocessor : (MN171603 HFJ1)
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 NOT USED 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-191/391/492
IC5
SHOCKPLOOF
SM5859AF
IC6
DRAM
MN171603
HFJ1
AN8819
NFB-M
EXCEPT FOR DPC-191
(KSM-542AAA)
/ / /
/ / /
/ / /
FROM IC4 (Rch)
J105
LINE OUT
J102
Rch
Lch
H. P JACK
NJM2073M
VOLUME
J103
REMOTE
DPC-191 (M2 TYPE)
DPC-391 (M TYPE)
LMT.
SW
AN8806SB
Lch
IC7
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
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