Kenwood DMS-E7, DMS-E9, DMSE-7-G Service manual

MINIDISC RECORDER

  

minidisc recorder

rec

level

O.T.E.

on/standby

D.R.I.V.E.

DIGITAL IN

OPTICAL

SYSTEM

CONTROL

REC IN

PLAY OUT

DM-SE7/SE7(G)/SE9

SERVICE MANUAL

Indicator (B12-0318-04)

Knob* (K29-)

Optic receiving module (W02-1181-05)

Escutcheon* (B07-)

Front glass (B10-2372-03)

Metallic cabinet* (A01-)

Panel* (A60-)

Knob* (K29-)

Power cord bushing (J42-0083-05)

Phono jack (E63-0120-05)

Rectangutar receptacle (E08-0311-05)

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

KENWOOD-Crop. certifies this equipment conforms to DHHS Regulations No. 21 DFR 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 21.

Illustration is DM-SE9.

AC power cord* (E30-)

Beware of condensation

When water vapor comes into contact with the surface of cold material, water drops are produced. If condensation occurs, correct operation may not be possible, or the unit may not function correctly. This is not a malfunction, however, and the unit should be dried. (To do this, turn the POWER switch ON and leave the unit as it is for several hours.)

Be especially careful in the following conditions:

• When the unit is brought from a cold place to a warm place and there is a large temperature difference.

• When a heater starts operating.

• When the unit is brought from an air-conditioned place to a place of high temperature with high humidity.

• When there is a large difference between the internal temperature of the unit and the ambient temperature, or in conditions where condensation occurs easily.

DM-SE7/SE7(G)/SE9

N O DIS

CONTENTS / ACCESSORIES / CAUTIONS

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

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

PC BOARD ................................................................. 6

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

Accessories

EXPLODED VIEW .....................................................19

PARTS LIST...............................................................21

PARTS DESCRIPTIONS...........................................27

SPECIFICATIONS .......................................Back cover

Audio cord (E30-0615-05)

Optical fiber (B19-1529-05)

Cautions

System control cord (E30-2628-05)

Batteries (2)

Remote control unit (A70-1153-05) : RC-MSE7 (A70-1169-05) : RC-MSE9

Battery cover (A09-0129-08 : RC-MSE9)

(A09-0356-08 : RC-MSE7)

AC plug adapter (E03-0115-05)

Note related to transprotaion and movement

Before transporting or moving this unit, carry out

the following operations.

1. With no disc loaded in the unit, press the "on / standby" key to on.

• Check that no disc is present in the unit.

2. Wait a few seconds and verify that the display shown appears.

3. Press the "on / standby" key to off (standby).

CIRCUIT DESCRIPTION

PROTECT 23

REFLECT 20

DISCIN 25

STTLMT 24

PHOTSW 21

RECSW 19

LOADIN 32

LOADOUT 31

DRDT 73 DEMPH 77 DDQSY 48

DLAT 76 DSUB1 80 DSUB2 79

DWDT 74

DCLK 75

FLDCE 3

SRCLAT 78

VLCK 26

VLDT 63

VOLLAT 71

SBUSY 81 SDATA 82

KR1 54 KR2 55 KR3 56

INISW 58

1 A16 2 A17

84 AD0 : : 91 AD7

92 A8 : : 99 A15

5 RD 6 WR 7 CS 8 ASTB

33 SCHNG 13 SCL 34 SDA

28 XLAT 15 SENS 30 MNT0 14 MNT2 12 XRST 35 TX 27 RECP 29 MNT3 45 XINT 47 SQSY 48 DQSY 50 MNT1

65 SRDT 66 SWDT 67 SCLK

16 POWER 72 MUTE 17 LDON 18 RMS 36 BACKCHK 44 REM 46 CE 59 BACKV 83 BACKON

uPD784215GF506

E2PROM

CXD2652AR

MDM-04

LC8904Q

LC75710NE

SM5844AF

EXDT10EXLAT11EXCK

Q1 Q2 FLRST Q3 ADRST Q4 DIGRS

DRIVE Q5

DINSEL Q6

EMPHA Q7

DARST Q8

RAM

(X25)IC21

(X33)IC6

(X33)IC2

(X25)IC11

(X14)IC1

(X25)IC13

(X25)IC2

(X25)J3

(X25)IC15

MECHA

ELECTRIC Vol.

SERIAL.

1. Main microprocessor : uPD784215GF506

1-1 Microprocessor periphery block diagram

DM-SE7/SE7(G)/SE9

CIRCUIT DESCRIPTION

1-2 Pin description

No. Name I/O Description

1,2 A16,17 O SRAM address

3 FLDCE O FL display driver CE 4 EXCK O Extension port clock 5 RD O SRAM reading 6 WR O SRAM writing 7 CS O SRAM CS (L:SRAM enable) 8 STB O SRAMASTB

9 Vdd - Microcomputer power supply 10 EXDT O Extension port data 11 EXLAT O Extension port latch 12 XRST I System IC reset 13 SLC O E2PROM clock 14 MNT2 I System IC BUSY 15 SENS I System IC SENS 16 POWER O POWER (H:Power on) 17 LDON O Laser ON (H:Laser diode ON) 18 RMS O Pickup microwave satisfactory (H:ON) 19 RECSW I Mechanism REC position switch (L:REC SW ON) 20 REFLECT I Disc high reflex / low reflex switch (L:High reflex) 21 PHOTSW - Mechanism PLAY position detection

(L:Phot sensor ON)

22 (GND)TEST - Microcomputer power supply 23 PROTECT I Disc protect switch 24 STTLMT I Mechanism pickup position switch

(L:Start limit SW ON)

25 D1SCIN I Mechanism disc insertion switch (L:Disc out SW ON) 26 VLCK O SRC clock 27 RECP O System IC RECP 28 XLAT O System IC latch 29 MNT3 I System IC spindle LOCK 30 MNT0 I System IC FOK 31 LOADOUT O Loading motor OUT direction drive (L:Loading IN) 32 LOADIN O Loading motor IN direction drive (L:Loading OUT) 33 SCHNG O E2PROM data output change (H:SDA output) 34 SDA I/O E2PROM data 35 TX O System IC TX 36 BACKCHK O Back-up voltage check ON 37 Vdd - Microcomputer power supply 38 X2 O Oscillation element (12.5MHz) 39 X1 I Oscillation element (12.5MHz) 40 VSS - Microcomputer power supply

41,42 XT2,1 O Clock oscillation element (Unused)

43 RESET I Microcomputer reset 44 REM I Remote control input 45 XlNT I ATRAC interrupt 46 CE I Microcomputer CE 47 SQSY I SYNC interrupt 48 DQSY I Inner DlN interrupt 49 SSQSY I External DlR interrupt 50 MNT1 I System IC shock detection 51 Vdd - Microcomputer power 52 +5V - A/D standard voltage

No. Name I/O Description

53 - I Unused

54~56 KR1~3 I Key return 1~3

57 - I Unused 58 INISW I Destination change 59 BACKV I Backup voltage detection 60 - I Unused 61 GND - Microcomputer power 62 - I Unused 63 VLDT O SRC data 64 +5V - D/A standard voltage 65 SRDT I System IC input data 66 SWDT O System IC output data 67 SCLK O System IC clock 68 CRXD I External unit receiving data 69 CTXD O External unit transmission data 70 CENA I External unit correspondence permission 71 VOLLAT O Electron volume latch 72 MUTE O MUTE terminal 73 DRDT I DIR reading data 74 DWDT O DIR, display driver data 75 DCLK O DIR / display driver clock 76 DLAT O DIR latch 77 DEMPH I DIR emphasis 78 SRCLAT O SRC latch

79,80 DSUB2,1 I DIRSUB2,1

81 SBUSY O 16bit synchro BUSY 82 VLCK O 16bit synchro DATA

83 BACKON O Back-up voltage charge ON 84-91 AD0~7 O SRAM address / data 92-99 A8~15 O SRAM address / data

100 Vss - Microcomputer power

DM-SE7/SE7(G)/SE9

CIRCUIT DESCRIPTION

1-3 Backup

Each following condition is backup to the memory with

ON/OFF of the AC power.

• Information of TOC

• UTOC information (Settlement contents of “editing etc. of record, TRACK editing, titles”)

• Condition of POWER ON/OFF

• Condition of REC INPUT

• Condition of AUTO/MANUAL

• Setting of DIGITAL REC LEVEL

• Contents of the presetting title

1-4 Initial state

POWER =OFF REC INPUT =ANALOG AUTO MANUAL =AUTO PLAY MODE =TRACK REPEAT =OFF TIME DISPLAY =SINGLE(+) REC LEVEL =-12dB DRIVE =ON Preset title =PRE1 : Pops

=PRE2 : Rock =PRE3 : Classic =PRE4 : Jazz =PRE5 : Disco =PRE6 : Best Hits =PRE7 : Air Check =PRE8 : No. =PRE9 : Vol.

1-5 Way of resetting a microprocessor

When turning on while pressing EJECT key, DM-SE7/SE9 initializes and starts a microprocessor.

INI SW 58pin Description

High Overseas; KATAKANA uncorrespondence.

CYBER TITLER uncorrespondence.

Low Japan ; KATAKANA correspondence.

CYBER TITLER correspondence.

1-6 Key matrix :

0.00 0.49 1.48 2.48 3.48 KEY OFF

-0.47V -1.46V -2.46V -3.46V -4.45V 4.47-5.0V

KR 0 - - - - - -

÷÷ 88

KR 1

33 77 ¡¡ 11

KR 2 KR 3 -

*DM-SE7/SE9 doesn’t function. Mode for the inspection : It utilizes for the existence or non-

existence of the FL display.

• Way of setting Turn on the AC power while pressing STOP(7)key.

• Way of canceling Press STOP(7)key.

• Contents Press(¢)key or(4) key. Then, DM-SE9 becomes the following test mode. Press PLAY(3) key, to fix each test mode. To cancel each test mode, Press PLAY(3) key once again.

*O.T.E *ATT UP *ATT -

DOWN

REC INPUT

00 ¢¢ 44

DISPLAY

TIME

• SEG TEST (When PLAY key is pressed all FL are lighted. Indication changes cyclically as follows when ¢ or 4 key are pressed.)

“All FL light up”

“FL turn off the lights”

“KATAKANA”

“All FL light up”

• KEY TEST (For the mode for the production line, in the service, it doesn’t use.)

1-7 Extension IC

PIN No. IC Port name I/O Explanation

4 Q1 - O DIN selector 1 5 Q2 FLDRST O FL driver reset 6 Q3 ADRST O A/D reset

7 Q4 DIGRST O DIN reset 14 Q5 DRIVE O Drive ON/OFF 13 Q6 DINSEL2 O DIN selector 2 12 Q7 EMPHA O Play emphasis ONÅ^OFF 11 Q8 DARST O D/A reset

2. Adjustment

Refer to the adjustment ( the page ) of the service manual

(B51-5387-00) of 1050MD/DM-5090/9090.

But, the key to operate is different as follows.

DM-SE7/SE9 1050MD/DM-5090/9090 Description

PLAY ENTER Decision of MODE STOP FADE / DELEAT Cancellation of MODE

PAUSE SET Go to the next step

DM-SE7/SE9 1050MD/DM-5090/9090 Description

A continuation replay /

STOP FADE / DELEAT continuation recording

are canceled. The thread moves to the

FF FF periphery only while

pressing a key. The thread moves to the

FB FB internal circumference

only while pressing a key. The continuation recording menu choice Every time pressing a

- REC INPUT key, DM changes the mode at the pit and the groove "

- REC MODE Spindle servo mode change (CLVS and A) Every time pressing a

O.T.E TITLE INPUT key, DM changes the

contents of the display.

• DOT TEST (It becomes “Niagara indication” when PLAY key is pressed.)

CB D

PC BOARD(Component side view)

MD MECHANISM UNIT

MD CONTROL UNIT

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

FHJLNGIKMO

PC BOARD(Component side view

)

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

7 8

+ 15 hidden pages