Kenwood 1050MD User manual

DISC LOADING MECHANISM
PHONES LEVEL
REC LEVEL
REC INPUT
REC MODE
/CHARA.
SET
ENTER
PHONES
STEREO MINIDISC RECORDER DM -5090
JOG DIAL
4 ¢
1
37
8 ¶
¡
MONITOR
AUTO/
MANU.
EDIT /
SPACE DELETE
REPEAT
TITLE
SEARCHINPUT
TIME
DISPLAY
LEVEL
METER
MODE
0
TIMER
REC OFF PLAY
- ON – OFF
POWER
MIN MAX
MIN MAX
Dynamic Resolution Intensive Vector Enhancement D.R.I.V.E.
SYSTEM
CONTROL
PLAY
OUT
OPT.COAX.
REC
IN
2 COAX.1 OPT.
DIGITAL
LINE
PLAY
OUT
REC
IN
R
L
R
L
R
R
KENWOOD badge*
(B43-)
Knob*
(K27-) Panel*
(A29-)
Front glass*
(B10-) Knob* (K29-)
Knob*
(K29-)
Phone jack (3P)
(E11-0190-05)
Panel*
(A60-)
Phono jack*
(E11-)
Optic receiving module
(W02-1181-05)
Power cord bushing
(J42-0083-05)
Phono jack
(E63-0120-05) Phono jack* (E63-) Oscillating module (W02-1114-05)
AC power cord*
(E30-)
Metallic cabinet*
(A01-)
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 Regulation No.21 CFR 1040.10, Chapter 1,
Subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Illustration is DM-5090.
*Refer to parts list on page 40.
STEREO MINIDISC RECORDER
1050MD/DM-5090
DM-9090
SERVICE MANUAL ©1997-11/B51-5387-00 (K/K) 3191
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y[W 2

1050MD/DM-5090/DM-9090
2
CONTENTS/ACCESSORIES/CAUTIONS
CONTENTS/ACCESSORIES/CAUTIONS...................2
EXTERNAL VIEW........................................................3
BLOCK DIAGRAM.......................................................4
CIRCUIT DESCRIPTION.............................................5
WIRING DIAGRAM....................................................14
PC BOARD ............................................................... 15
SCHEMATIC DIAGRAM ........................................... 21
EXPLODED VIEW .....................................................37
PARTS LIST...............................................................40
SPECIFICATIONS.....................................................49
CONTENTS
Accessories
System control cord (1)
(E30-2733-05)
Remote control unit (1)
(A70-1141-05: RC-M0702)
Battery cover: (A09-0362-08)
Batteries (R6/AA) (2)
Audio cord (2)
(E30-0505-05) Optical fiber cable(1) (B19-1529-05)
Note related to transportation and movement
Before transporting or moving this unit, carry out the
following operation.
1. Set the POWER key to ON without loading a Mini Disc.
÷Check that no disc is present in the unit.
2. Wait a few seconds and verify that the display shown
appear.
3. Set the POWER key to OFF.
NO DISC
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 possi-
ble, or the unit may not function correctly.
This is not a malfunction, however, 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 tem-
perature of the unit and the ambient temperature, or in con-
ditions where condensation occurs easily.
AC adaptor (1)
(E03-0115-05) M type only
Cautions
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y[W 3

1050MD/DM-5090/DM-9090
3
EXTERNAL VIEW
EDIT/
SPACE
FADE/
DELETE
INPUT
MONITORREC INPUT
STEREO MINIDISC RECORDER DM-9090
TIMER
POWER
PHONES
-O N –OFF
LEVEL
MIN MAX OFF
PLAYREC
SEARCH
TITLE
DISC LOADING MECHANISM
High bit Rec. & Play D.R.I.V.E.
20bit Rec. D.R.I.V.E. & 24 bit D/A converter
0
1 ¡
4 ¢
8 ¶
7 3
ENTER
U PDOWN
PUSH SET
SEARCH
JOG DIAL
REC LEVEL REC BALANCE
MIN
L R
MAX
REC MODE
/CHARA.
R
L
SYSTEM
CONTROL
PLAY
OUT
OPT.COAX.
REC
IN
3 COAX.1 COAX. 2 OPT.
D I G I T A L
L I N E
PLAY
OUT
REC
I N
R
L
Miniature phone jack
(E11-0188-05)
Phono jack
(E63-0174-05)
Oscillating module
(W02-1114-05)
Phono jack
(E63-0185-05) Power cord bushing (J42-0083-05)
AC power cord*
(E30-)
Metallic cabinet
(A01-3450-01)
Illustration is DM-9090.
*Refer to parts list on page 40.
KENWOOD badge
(B43-0302-04)
Knob
(K27-2178-04) Front glass
(B10-2362-04) Panel Assy (A60-1258-02) Knob
(K29-6700-03)
Knob
(K29-6697-04)
Phone jack (3P)
(E11-0190-05) Panel
(A29-0868-24) Escutcheon
(B07-2348-21) Escutcheon
(B07-2361-22) Knob
(K29-6692-04)
Knob
(K29-6695-14)
Knob
(K29-3741-04) Escutcheon
(B07-2348-21)
Phono jack
(E63-0121-05)
Optic receiving module
(W02-1181-05)
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y[W 6

1050MD/DM-5090/DM-9090
4
BLOCK DIAGRAM
DM-9090(T,E)
DM-5090(J,K,M,T,E)2-71: DM-5090(T,E)
0-21: DM-5090(M)
0-00: DM-5090(J,K)
X00-285X-XX
X00-2842-71: DM-9090
X32-3470-00: DM-9090 ONLY
X25-5940-XX -02: DM-5090(J) -12: DM5090(K,M,T,E)
X25-5940-11: DM-5090(T,E)
X14-4430-00: DM-5090
X14-4380-00: DM-9090
MECHA: MDM-04 (X33-1100-00)
ANALOG
(J) TYPE ONLY
256fS
SENSOR
SUB-CODE
ONLY
4Mx1
3.3V
-
+
DM-5090
DM-5090
IC14
NON REG: 12V
5.03.3
DIGITAL
HEAD DRIVER
DIGITAL
256K SRAM
2
E PROM
IC27 LC89170M
CD TEXT
DECODER
3.35.0
5.0
REMOTE
CONTROL
RECORDING
HEAD
IC181
DIGITAL
DIGITAL
DIGITAL
EXCEPT
DM-5090
EXCEPT (K) TYPE
FL AC
-33V
u-COM +5V
u-COM VDD
AC
TEMP. DET.
IC26
ONLY
DM-5090
IC6
IC8 CS5335
DIGITAL
OUTPUT
INPUT
DIGTAL
SL16
SYSTEM
CONTROL
(K) TYPE
CONTROL
SYSTEM
TITLER
CYBER
OPT OUT
COAX. OUT
OPT IN
EXCEPT
DM-5090
COAX. IN 2
COAX. IN 1
IN/OUT
ANALOG
IN
ANALOG
ANALOG
OUT
PHONES
TA8409S
DRIVER
LOADING MOTOR
IC35
DISC
MOTOR
DISC
LASER DRIVE APC
Q162
DM-9090 ONLY
RECEIVER
INTERFACE
DIGITAL
IC14
DM-5090 ONLY
512fS
~
DIGITAL
ANALOG
ANALOG ANALOG
MOTOR
FEED
LOADING MOTOR
3.3
DIGITAL+5V
+3.3V
REG.
IC37
BUFFER
EXP.
I/O
IC32
DISC IN SW
START LIMIT SW
PROTECT SW
REFRECT SW
REC SW
REC LEVEL
JOG
REC BAL.
IC2
TIMER SW
MATRIX
KEY
IC1
DRIVER
FL DOT MATRIX
LC7571ONE
FIP12XM1GA
FL
KMS-260A
PICK UP
IC124 DRAM
PLAY POS. SW
IC152
IC121
DRIVER
MOTOR
(BH6511FP)
SERVO
IC101
RF AMP
(CXA2523R)
(CXA2523R)
MEMO. CONT
ATRAC
SERVO
DSP
ACIRC
SRAM +5V
+5V
DIGITAL HEAD MOTOR
ANALOG +5V AVR
AVR
AVR
AVR
LINE
FILTER
TRANSFORMER
POWER
IC31
IC28
256K SRAM
TITLER
& CD TEXT
u-COM
UPD78F4216
u-COM
MAIN
512fS
D/A CONV.
D.R.I.V.E.
with
KAN05SM5842 IC7-14IC5IC4
1/2
D.P.A.C.
D/A CONV.
24bit
RESOLUTION
DIGITAL FILTER
20bit(24bit)
IC23 LC8904Q
IC24 KAN03
D.R.I.V.E.
IC25 SM5844AF
CONVERTER
RATE
SAMPLING
DET.
DATA
DEMOD.
A/D CONV.
20bit
-VFL
FCS TRK
AC
SYSTEM
AUDIO
FCS,TRK,SPIN,SLED PWM
FEED
SPINDLE
A,B,C,D,E,F
I,J,
APC REF
CONT,BUS
RF,TE,FE,SE
M
M
M
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y[W 7

No. Name I/O Description
1,2 - O N.C.
3 EXLAT O Output port of latch signal to IC32 (TC74HC4094)
4 EXCK O Clock output port to IC32 (TC74HC4094)
5RD O SRAM WR
6WR O SRAM WR
7 CS O SRAM CS L; SRAM enable
8 STB O Output port of strobe signal to IC33
9 Vdd - Power supply (Microprocessor)
10 POWER O Power terminal H; Power ON
11 MUTE O Mute control output L; Mute ON
12 INISW2 I Destination selector
13 SCHNG O E2PROM data IN/OUT change-over H; SDA output
14 SBUSY I/O 16 serial busy
15 SDATA I/O 16 serial data
16 SCL O Output port of clock signal to IC6 (X33)
17 SDA I/O Interface port of data signal from / to IC6 (X33)
18 LDON O Laser ON / OFF control port H; LD ON
19 RMS O Pick RMS H; ON
20 XLAT O System IC latch
21 SENS I System IC sens
22 GND - GND
23 PROTECT I Detection port of protect switch L; Protect ON
24 REFLECT I Detection port of reflect switch H; Low reflect
25 DISCIN I Detection of disc input switch L; Disc out SW ON
26 STTLMT I Detection port of limit switch L; Start limit SW ON
27 PHOTSW I Detection of mechanism play position L; Photo sensor ON
28 REC SW I Input port of detection from REC position switch L; REC SW ON
29 LOADIN O Output port of loading motor control signal L; Loading OUT
30 LOADOUT O Output port of loading motor control signal L; Loading IN
31 MNT0 I FOK signal from CXD2652AR (IC2) L; Focus ON
32 MNT2 I Input port of monitor 2 from CXD2652AR (IC2)
33 XRST O Output port of reset signal to CXD2652AR (IC2)
34 TX O Output port of recording permitted signal
35 RECP O Laser power control to CXD2652AR (IC2)
36 MNT3 I Input port of monitor 3 from CXD2652AR (IC2)
37 Vdd - Power supply (Microprocessor)
38,39 - Clock IN / OUT (12.5MHz)
40 GND - GND
41 OPEN O No used
42 GND I No used
1050MD/DM-5090/DM-9090
5
CIRCUIT DESCRIPTION
1. Mechanism microprocessor : uPD784215GF508 (X25- , IC31)
1-1 Pin description
1050MD/DM-5090(K) COVER 97.11.28 2:25 AM y[W 10