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Kenwood DMF-9020 Service Manual
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Kenwood DMF-9020 Service Manual

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Download this manual See also: Instruction Manual
STEREO MINIDISC RECORDER
DMF-9020/9020(S)
MD-2070
SERVICE MANUAL
Phono jack
KENWOOD badge
(E63-1066-05)
(B43-0302-04)
STEREO MINIDISC RECORD ER
POWER
- O N – OFF
KEYBOARD
PHONES
LEVEL
TIMER
REC
PLAY
MIN
MAX
OFF
Phone jack
Knob
(E63-0190-05)
(K29-6697-04)
Knob
(K29-3741-04)
Metallic cabinet
(A01-3449-01)
In compliance with Federal Regulations, following are
reproductions of labels on, or inside the product relating to
laser product safety,
Knob
Color filter
(K27-2178-04)
(B11-0237-14)
EDIT/
TITLE
SPACE
INPUT
SEARCH
FADE/
REC INPUT
MONITOR
DELETE
24 bit Rec. & Play D.R.I.V.E.
Optic receiving module
Phono jack
(E63-1066-05)
(W02-1181-05)
L I N E
REC
PLAY
I N
OUT
1 COAX.
L
L
R
R
Phono jack
(E63-1059-05)
Front glass
(B10-2362-04)
0
DISC LOADING MECHANISM
DOWN
Dressing panel ass'y
(A21-3756-03)
Oscillating module
(W02-1114-05)
SYSTEM
D I G I T A L
CONTROL
REC
PLAY
IN
OUT
2 OPT.
3 COAX.
COAX.
OPT.
TEXT
Phono jack
Miniature phone jack
(E63-0174-05)
(E11-0188-05)
KENWOOD-Corp. certifies this equipment conforms to
DHHS Regulation No.21 CFR 1040.10, Chapter 1,
Subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM.
©
1998-11/B51-5495-00 (K/K) 2945
Knob
Knob
(K29-6700-03)
(K29-6692-04)
REC LEVEL
REC BALANCE
JOG DIAL
L
R
4
¢
REC MODE
ENTER
/CHARAC.
/TIME DISPLAY
MIN
MAX
U P
8
PUSH SET
1
¡
SEARCH
7
3
Knob
(K29-6695-14)
AC Power cord *
(E30-)
Power cord bushing
(J42-0083-05)
Illustration is DMF-9020.
Refer to parts list on page 29.

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Summary of Contents for Kenwood DMF-9020

  • Page 1 Illustration is DMF-9020. Refer to parts list on page 29. In compliance with Federal Regulations, following are KENWOOD-Corp. certifies this equipment conforms to reproductions of labels on, or inside the product relating to DHHS Regulation No.21 CFR 1040.10, Chapter 1, laser product safety, Subchapter J.

  • Page 2: Table Of Contents

    DMF-9020/9020(S)/MD-2070 CONTENTS/ACCESSORIES/CAUTIONS CONTENTS CONTENTS/ACCESSORIES/CAUTIONS....2 SCHEMATIC DIAGRAM ........... 13 CONTROLS ..............3 EXPLODED VIEW .............27 BLOCK DIAGRAM ............5 PARTS LIST...............29 CIRCUIT DESCRIPTION ..........6 SPECIFICATIONS ........Back cover PC BOARD ..............9 Accessories Audio cord (2) System control cord (1) Optical fiber cable (1)
  • Page 3 Display / Main unit Description of main unit keys POWER key PHONES LEVEL knob : Press to turn the unit ON and OFF. : Rotate to adjust the volume of the headphones. : The unit may enter the standby mode when the POWER key is pressed to turn it ON.

  • Page 4: Remote Control Unit

    Remote control unit The remote control unit incorporates the basic operation keys as well as a variety of applied operation keys so that it can be used in a wide range of purposes. The keys on the remote control unit with the same names as on the main unit have the same function as the keys on the main unit.

  • Page 5: Controls

    (X25-617X-XX) MECHA: MDM-04 (X33-1100-00) HEAD DRIVER DIGITAL ANALOG IC13,14 IC38 24bit RESOLUTION PLAY 3.3V 5.0V D/A CONVERTER MUTE RECORDING Q16-19 LINE DISC HEAD (ANALOG) TEMP. DET. 512fs IC15 ANALOG IC10 (1/2), IC10 (2/2), ANALOG RF,TE,FE,SE ACIRC 2V/0.3K IC11 (1/2) IC11 (2/2) I,J, 20bit 0.5V/22K...
  • Page 6 Power terminal H; Power ON (X25) IC30 36:MNT3 MUTE Mute control output L; Mute ON 66:SWDT CENA:70 INISW2 Destination selector H:DMF-9020,MD-2070 SUB U-COM 67:SCLK CTXD:69 SCHNG E2PROM data IN/OUT change-over H; SDA output 20:XLAT CRXD:68 SBUSY 16 serial busy (X25) IC25...
  • Page 7 (X25) IC31 U-COM 1-4 Switch control table 1-3 Initialization TC-74HCT373AF MECHA uCOM POWER = ON (DM-9090,DM-5090) Model INISW INISW MTXD DMF-9020 CRxD REC INPUT = ANALOG 3.5 (V) HIGH MD-2070 DIGITAL REC LEVEL = 0 dB CTxD MRXD AUTO/MANUAL = AUTO...

  • Page 8: Block Diagram

    4. Test mode of the unit • Function of the key Pin No. Port Name Description CS (SRAM) SRAM control. chip select H : POWER DOWN Mode 4-1 Setting of the test mode REC/INPUT KEY-TEST – SRAM control. write strobe signal output While pressing the [REC/INPUT] key, plug the AC power EDIT NIAGARA TEST...

  • Page 9: Pc Board

    PC BOARD (Component side view) X25 B/2 R452 C452 C451 C453 X25-6170-00 A/2 (J70-1263-21) CLOCK GEN C142 R147 C134 C105 R405 R157 C301 R158 R160 C123 R156 R321 R164 R169 C302 C169 R155 R302 R312 R173 R154 R401 C139 R327 C130 R326 C168...
  • Page 10 PC BOARD (Component side view) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 11 PC BOARD(Component side view) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 12 MECHA. (D40-1533-05) (X33-1100-00) HEAD (5V) DRIVER (0V) DRAM CN104 HR901 OVER WRITE HEAD (0V) (0V) 0V (3.2V) <3.2> 3.3V CN103 3.3V 3.3V C184 +3.3V +3.3V +3.3V 22u8 3.3V C124 1.8V (2.5V) 0.3V (2.8V) <2.5V> <2.87V> (0V) 1.6V <1.7V> 0V (2.2V) <2.2V> 0.5V R125 100 PROM...
  • Page 13 (REC) refers to the value during MD M+5V RECORDING. LRCK M+5V M+5V LOAD-IN LOAD-OUT +3.3V 3.3V STOP PLAYBACK H+5V DIGITAL IN H+5V RECORD DOUT MEASUREMENT IMPOSSIBLE DIGITAL OUT PLAYBACK C196 RECORD 512FS GND LINE HGND +B LINE -B LINE H+5V DMF-9020/9020(S)/MD-2070 DMF-9020/9020(S)/MD-2070(K) (1/3) Y22-7880-11...
  • Page 14 ELECTRIC UNIT (X25-617X-XX) (A/2) MECHA CONTROL DIGITAL BUFFER (3.3V 5.0V) 1.7V H GND IC38 5.1V 512fs 3.3V 5.1V 2.5V D OUT 5.1V 3.3V H+5V 3.3V 1.2V D IN 5.0V 1.8V 3.3V +3.3V +3.3V 5.1V 1.0V Q30,31 1.7V LOAD-OUT SRAM R389 GND 19 SEL.
  • Page 15 DISC IN TM SW 5.1V R385 100 DMF-7003 STTLMT 5.1V IC28 4.9V DMF-7020 5.1V R384 100 CENA PHOT SW 2.8V R288 DMF-9020 1.0- 5.0V 5.1V R383 100 CTXD X2 12.0MHz REC SW(REC-P) 2.0 [V] 5.1V MD-2070 u-COM 100K 5.1V R382 CRXD C312 5.0V...
  • Page 16 R189 330 IC22 (4/6) IC22(5/6) +7.6V R286 1K CONVERTER 5.2V IC1,2 DIGITAL IC PROTECTION R221 100K 7.6V C230 C217 C218 +8V AVR R188 0.01 0.01 1000P C122 11.4V 5.1V 11.4V 1000P C232 R27 1 R187 150P 1/4W 1 1/4W C225 R190 47 +7.6V +7.6V...
  • Page 17 DMF-9020(S) (X25-6172-71) DESTINATION R299, R370, UNIT No. R299 UNIT No. 454-457 COUNTRY ABB. 454-457 DESTINATION R370,371, COUNTRY ABB. UNIT No. R299 U.S.A. 454-457 COUNTRY ABB. JAPAN 0-01 2-71 CANADA U.K. 2-71 MD-2070(K,P) (2/3) EUROPE DMF-9020/9020(S) (T,E) (2/3) DMF-7020/7003/7003G(J) (2/3) DMF-9020/9020(S)/MD-2070 Y22-7880-11...
  • Page 18 DISPLAY UNIT (X14-4420-00) (A/2) : DMF-7003(J)/DMF-7003G(J1) (-dB) OVER REPEAT FADE ANALOG DIGITAL TITLE MONO 32kHz SEARCH 0 OVER (-dB) MONITOR COPY SINGLE 44.1kHz MANUAL TOTAL 48kHz A.PAUSE REMAIN (1G-12G) -15.7V 4.9V 4.9V -19.3V -15.0V AM16 AM33 -19.3V -29.8V AM15 AM34 -17.2V -19.3V AM14...
  • Page 19 DISPLAY UNIT (X14-4380-00) (B/5) : DMF-7020(J2)/MD-2070(K1,P1)/DMF-9020(T1,E1)/DMF-9020(S) (T2,E2) DMF-7020 (X00-2840-01) DESTINATION UNIT No. WH1,2 WH4,5 TRANSFORMER COUNTRY ABB. JAPAN 0-01 1.25A 125V L07-2362-05 0 OVER (-dB) REPEAT FADE ANALOG DIGITAL DM-2070 (X00-2840-11) DESTINATION UNIT No. WH1,2 WH4,5 TRANSFORMER COUNTRY ABB. TITLE U.S.A.

  • Page 20: Exploded View

    DMF-9020/9020(S)/MD-2070 EXPLODED VIEW (MECHANISM) : N09-2817-05 M1.7x4.5 : N39-1745-46 ø2.6x10 : N09-3104-05 ø2x4 : N82-2004-46 M1.7x2 : N09-3279-05 ø2x8 : N89-2008-46 M1.7x3 : N09-4145-05 ø2.6x6(BLK) : N89-2606-45 ø2x6 ADx2 (B/2) AFx2 X29-2580-00 (A/2) X33-1100-00 Slit When assembling a mechanism, adjust "slit A and slit B "...
  • Page 21 PHONES LEVEL (C/5) (B/2) X-14 (E/5) 652x2 X14-4380-00 (A/5) REC MODE /CHARA. ENTER TITLE EDIT/ SPACE INPUT SEARCH JOG DIAL S 6 S 9 FADE/ TIMER INPUT MONITOR DELETE SEARCH S 8 S10 X14 (C/5) X14 (B/5) X14 (A/5) DMF-9020...
  • Page 22 Ref. No Parts No. Description ress marks ress Parts nation marks Parts nation H10-7546-02 POLYSTYRENE FOAMED FIXTURE DMF-9020 / 9020(S) / MD-2070 H10-7547-02 POLYSTYRENE FOAMED FIXTURE H11-0088-04 POLYSTYRENE FOAMED BOARD A01-3449-01 METALLIC CABINET T1E1 H12-2457-04 PACKING FIXTURE A01-3625-01 METALLIC CABINET H25-0232-04 PROTECTION BAG (235X350X0.03)
  • Page 23 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 24 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 25 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 26 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 27 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 28 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.

  • Page 29: Specifications

    Weight (Net) ................5.4 kg (11.9 lb) 1. KENWOOD follows a policy of continuous advancements in development. For this 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).

This manual is also suitable for:

Dmf-9020(s)Md-2070