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SPECIFICATIONS

PORTABLE MD PLAYER

DMC-K3

SERVICE MANUAL

© 1999-1/B51-5503-00 (K/K) 2837

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.

System ...........................

Mini disc digital audio system

Read method .................

Noncontact optical reading system (semicon-
ductor laser)

Sampling frequency ......

44.1 kHz

Audio compression .......

ATRAC (Adaptive Transform Acoustic Coding)

Number of channels ......

2 channels

Frequency response ......

20 Hz  to  20,000 Hz (

±

  3 dB)

Wow & flutter ................

Less than unmeasurable limit (

±

 0.001 %

W.PEAK)

Input/Output terminal ..

Remote control/Phones jack

Rated power output ......

9 mW+9 mW

Power source

DC IN

 jack (4–5.1V)

: Specially provided AC adaptor
: Car battery adaptor (sold separately, DC-C70)

DC 1.5V : Commercially sold AA alkaline battery (LR-6) 

×

 1

DC 1.2V : Specially provided rechargeable battery (NB-150) 

×

 1

(Charging time : About 3 hours)

Battery life 

(Fully charge, with “

PS on

” setting ON)

Specially provided rechargeable battery (NB-150) 

×

 1 ......... Approx. 7 hours

Commercially sold AA alkaline battery (LR-6) 

×

 1 ............... Approx. 8 hours

÷

At 0.5mW+0.5mW output (32 

 load ).

÷

Standard value during continuous use/charging in an temperature of
25˚C.

÷

Time of use may vary depending on battery maker, battery type, use
environment, and temperatute.

÷

Time will be shorter when “

PS off

” Mode is set.

Dimensions 

(not including protruding parts)

 W :99 mm (3-7/8”)
 H  :17 mm (11/16”)
 D  :75 mm (2-15/16”)

Weight (Net)

............ 115g (0.25 lb)

not including the accessory rechargeable batter
140g (0.31 lb)
including the accessory rechargeable battery

1. KENWOOD follows a policy of continuous advancements in development. For reason specifications may be changed without notice.
2. The full performance may not be exhibited in an extremely cold location (under a water-freezing temperature).

Notes

Notes

KENWOOD CORPORATION MADE IN JAPAN

  O P E N

DC   IN   4 - 5.  1V

PHONES

BATTERY   ( L6 .R6 .AA .AM3 )  1 . 5V

NI - MH   BATTERY                     1 . 2V

IN

OPEN

HOLD

Lid assy
(A53-2123-03)

Dressing panel
(A21-3741-04)

Knob 
(K29-7476-03)

Knob 
(K29-7478-04)

Knob 
(K29-7477-04)

Battery cover
(A09-1118-03)

Miniature phone jack
(E11-0381-05)

Metallic cabinet assy
(A01-3664-03)

Escutcheon
(B07-2443-01)

DC jack
(E03-0357-05)

Knob
(K29-7475-03)

Illustration is DMC-K3(S).

Summary of Contents for DMC-K3

Page 1: ... with PS on setting ON Specially provided rechargeable battery NB 150 1 Approx 7 hours Commercially sold AA alkaline battery LR 6 1 Approx 8 hours At 0 5mW 0 5mW output 32 Ω load Standard value during continuous use charging in an temperature of 25 C Time of use may vary depending on battery maker battery type use environment and temperatute Time will be shorter when PS off Mode is set Dimensions ...

Page 2: ...Use the special recharge able battery NB 150 Wait until the unit has cooled to normal tempera ture Use the accessory AC adaptor Connect the AC adaptor securely There is no sound The unit does not respond to key opera tion Sound skips Troubleshooting Message Meaning There is no MD in the unit Nothing is recorded on this MD The UTOC contents are faulty The disc is scratched or dam aged so playback i...

Page 3: ... key 4 Skip down key MODE key LCD 6 Play pause key 7 Stop off key Charge key HOLD switch Volume up key Volume down key The mode changes each time the MODE key is pressed The mode changes each time the MODE key is pressed MODE key Only by remote control operation 1 Fast forward fast reverse search 2 Changing the display mode 3 Play Mode 4 Changing the tone BASS BOOST 5 Original display 1 AUTO PLAY ...

Page 4: ... screws 1 2 Slide the case to the opposite side of the battery case 2 How to Check PCB 3 Rmove 7 screws 3x5 4x2 and unsolder the corner of pcb 5 4 Connect the ground wire to the LCD mounting hardware and the frame of the unit 6 5 Fix the switch 1 ON mode by the tape 7 And check the unit with standing it ...

Page 5: ...T Pin No Name I O Description Function H L 1 XLAT O DSP IC CXD2655BR LATCH signal 2 XRST O DSP IC CXD2655BR HARD RESET signal 3 XSTBY O RF SERVO IC CXA2523AR STAND BY signal 4 LDON O PICK UP LASER on off signal L LIGHTING H NON LIGHTING 5 BEEP O BEEP output to HP AMP 6 BASS BOOST O Analog bass boost control L BOOST ON H BOOST OFF 7 RESET µ com RESET 8 VDD µ com power supply 9 X2 O µ com SYSTEM CLO...

Page 6: ...PDO I E2PROM DATA signal 55 VDD µ com power supply 56 KEY0 I Set s key input TAKE IN A D 57 KEY1 I LCD remocon key input TAKE IN A D 58 ADP I Adaptor DC detector TAKE IN A D 59 CHGOK I Rechargeable battery detector TAKE IN A D 60 BATT I Battery DC input TAKE IN A D 61 SEIN REVERSE I SLED ERROR signal REVERSE TAKE IN A D 62 SEIN FORWARD I SLED ERROR signal FORWARD TAKE IN A D 63 ADON O AVREF voltag...

Page 7: ...etting range of 32 steps 00h 1Fh in the balance setting value The default value are High reflection 51h Low reflection 10h pit Low reflection 90h groove 2 Display shows the following if automatic adjustment proceeds Remote cont WAIT O O means in operation mode Unit o1 3 Adjustment is over if loading the pre recorded disc In case of the recordable disc the servo will be 03 mode Read the TOC in lead...

Page 8: ...wave 9 04dB L R Emphasis on 2 2 1 Procedures 1 Connect 23 P_TEST0 of IC5 to 2 8V VDD and 24 P_TEST1 of that to GND Next Connect AC adapter to the unit the unit will be in CPLAY mode after TOC reads Remocon TEST 4 Unit o4 2 The unit will be in CPLAY after TOC reading Remocon TOC OK Unit o4 3 Choose and playback TNO 02 on the disc by PLAY PAUSE key Remocon 02 playback TNO Unit o4 4 Choose and playba...

Page 9: ...VC RF0 B D VCC PD VEE ADIN CHG 1 3 4 2 IC6 Q15 D12 Q1 Q2 Q12 D8 Q17 D6 Q16 D11 D4 Q10 D7 Q3 D2 IC1 IC2 Q4 IC4 Q5 IC3 Q7 D3 D9 Q11 Q8 S1 J1 PHONES DC IN J70 1290 02 X33 1180 00 OPEN J2 IC5 D10 Q13 Q14 S2 CN1 IC13 IC8 IC12 Q9 IC9 Q6 IC7 IC10 PLAY STOP ED1 VOLUME S4 S7 VOLUME S8 S5 S3 S6 D1 D5 CN2 C27 X2 R29 R36 B E 80 C40 VC R42 C38 B E B E R40 C39 R43 R46 R41 C51 F 22 C41 1 51 50 C67 C49 20 R62 1 3...

Page 10: ...0 033 C44 0 22 15 12 19 2200P 15K R59 C22 C18 C17 2200P 2200P 16 17 13 18 14 15 C11 0 1 C14 0 1 C15 0 1 C49 0 1 88 89 85 86 70 67 64 61 47u4 L5 22uH C67 47 49 48 46 42 45 41 44 38 43 37 32 36 31 35 30 34 29 33K R3 10K R4 330 R5 10u10 4 5 1 2 3 VO VDD GND EXT CE 3 4 5 6 C12 0 01 R64 10K 2 7K R38 17 18 13 16 15 14 100Kx2 R15 S19 S18 S17 S16 S15 S14 2 1 C61 470K R72 1K R13 67 70 61 64 15 19 12 21 22u...

Page 11: ...13 S12 S11 S10 S9 S8 S5 S6 S7 S4 COM S1 S2 S3 R22 150K 100Kx2 R62 HOLD ON 330K R36 R29 470K 470K R28 C62 0 1 R37 100Kx2 C66 1 C7 1 61 62 10K 58 59 C19 0 01 10K R33 51 C58 0 01 R30 560Kx4 180Kx2 R31 130K R49 0 01 C59 0 01 C64 4 5 2 1 3 6 50 49 Q8 10 Q1 3 12 IC2 Q17 2 7K R24 R25 3 0K R26 4 3K R34 8 2K R35 18K 59 60 L6 22uH 4 7u4 C112 22u4 C116 2 2 R50 51 R70 58 5 12 57 57 0 01 C47 16 16 50 49 60 B B...

Page 12: ... B ø1 7x1 8 BLK C ø1 4x3 BLK D ø1 4x3 BLK E WASHER N09 3279 05 N09 3104 05 N09 3488 05 N19 3369 05 N19 1416 04 A A B C D Cx2 801 E Dx3 20 13 11 9 14 7 8 1 17 10 16 15 FM DM 23x2 PU 1 2 3 A B Parts with exploded view numbers larger than 700 are not supplied ...

Page 13: ...N09 3487 05 N78 1730 45 N19 1416 04 S 2 S 3 S 6 S 5 S 8 S 7 S 4 S 1 J 1 J 2 ED1 661 662 660 608 663 771 737 742 738 748 713 770 745 744 640 636 635 620 640 621 628 625 603 651 653 652 650 641 626 602 640 747 712 730 701 731 646 645 627 629 611 606 610 607 A A A A D Bx2 Bx2 C C Bx5 A A A A A A VOLUME OPEN HOLD PHONES VOLUME DC IN 664 K type NB 150 1 2 3 C D ...

Page 14: ...ssia H Korea M Other Areas indicates safety critical components 662 1C W09 1251 05 AC ADAPTER K1 663 1C W09 1267 05 BATTERY NI MH NB 150 664 1C W01 0963 05 STEREO HEADPHONE OPEN K1 ED1 2D B38 0172 05 LIQUID CRYSTAL C1 C92 0206 05 TANTAL 22UF 16WV C2 CK73GB1H471K CHIP C 470PF K C3 5 C92 0170 05 TANTAL 100UF 4WV C6 CK73GB1C104K CHIP C 0 10UF K C7 CK73GF1A105Z CHIP C 1 0UF Z C8 CK73GB1E103K CHIP C 0 ...

Page 15: ...urope X Australia Q Russia H Korea M Other Areas indicates safety critical components R29 RK73GB1J474J CHIP R 470K J 1 16W R30 RK75GB1J564J CHIP R 560K J 1 16W R31 RK75GA1J184J CHIP R 180K J 1 16W R32 R92 1917 05 METAL GLAZE 22K F 1 16W R33 RK73GB1J103J CHIP R 10K J 1 16W R34 RK73GB1J822J CHIP R 8 2K J 1 16W R35 RK73GB1J183J CHIP R 18K J 1 16W R36 RK73GB1J334J CHIP R 330K J 1 16W R37 RK75GA1J104J ...

Page 16: ...106 TRANSISTOR Q16 DTC114TUA DIGITAL TRANSISTOR Q17 2SK3018 FET 1 A10 3457 03 CHASSIS ASSY 7 D10 3648 14 ARM ASSY 8 D10 3846 04 ROD 9 D13 1908 04 GEAR ASSY 10 D13 1910 03 GEAR 11 D40 1620 01 MECHANISM ASSY 13 G01 3911 14 EXTENSION SPRING 14 G01 3912 04 EXTENSION SPRING 15 G02 1096 04 FLAT SPRING 16 G02 1666 04 FLAT SPRING 17 G16 0926 04 SHEET 20 J19 5699 42 HOLDER ASSY 23 J69 0091 04 ADHESIVE DOUB...

Page 17: ... Sirtori 7 9 20129 Milano ltaly KENWOOD IBÉRICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001499 074 P O Box 504 8 Figtree Drive Australia Centre Homebush N S W 2140 Australia KENWOOD LEE ELECTRONICS LTD Unit3712 3724 Level37 Tower1 Metroplaza 223HingFongRoad KwaiFongN T HongKong KENWOOD ELECTRONICS GULF FZE P O Box 61318 Jebel Ali Dubai U A E KENWOOD ELECTR...

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