Onkyo MD-101-A Service manual

SERVICE MANUAL

MINIDISC RECORDER

MODEL MD-101A

MD-101A

Ref. No. 3703

112001

MINIDISC RECORDER

DISC LOADIING MECHANISM

INPUT

STANDBY / ON

STANDBY

DISPLAY

MDT
MGT, MGR

MULTI JOG

EDIT / NO YES

CD

DUBBING

REC

PUSH TO ENTER

MD

REC MODE

Silver models

120V AC, 60Hz
220-230V AC, 50/60Hz

STANDBY/ON

PLAY MODE

CONTINUE

RANDOM MEMORY

ABCDE

1

2345

FGHI J

6117
KLMNO

12

PQRST

16

17

UVWXY

21

22

Z

REPEAT A-B A.SPACE M.SCAN

>

25

/

?

REC

REMOTE CONTROLLER RC-

-

101

A

8

13

18

23

!

SCROLL DISPLAY

475

MD

EJECT

9

10

14

15

19

20

24

25

.,

(

CLEAR

ENTER

NAME

)

RC-475MD

SAFETY-RELATED COMPONENT
WARNING!!

COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.

SPECIFICATIONS

MD-101A

System

MiniDisc digital audio system

Recording system

Magnetic field modulation overwrite system

Signal read out system

Optical non-contact

Recording time

Stereo: Max. 80 min.
(when using MDW-80)
Mono : Max. 160 min.
(when using MDW-80)

Number of revolutions

About 400 - 900 rpm (constant linear velocity)

Error correction system

Advanced Cross Interleave Reed-solomon code

Sampling frequency

44.1 kHz

Number of channels

2 (stereo)

Frequency response

10 Hz - 20 kHz ( 0.5 dB)

Signal to noise ratio

100 dB or more when playing

Output level

2.0 volts r.m.s.

Power supply rating

AC 230-240 V, 50/60 Hz
AC 120 V, 60 Hz

Power consumption

13 watts (AC 230-240 V, 50/60 Hz)
15 watts (AC 120 V, 60 Hz)

Dimensions (W H D)

155 76 288.5 mm

Weight

2.3 kg

Specifications and features are subject to
change without notice.

DISPLAY MESSAGES

MD-101A

Message

Auto Space
Blank Disc
Cannot Copy

Cannot Edit

Cannot Rec
CD Dub Fail

Complete
D. In Unlock

Disc Error
Disc Full
Full
Impossible
Mecha Error
Memory Full
Music Scan
Name Full
No Change
No Disc
No Track
Over

Protected
Retry Error
Signal Wait
Synchro Rec
TOC Reading
TOC Writing
TOC Error

Meaning

This message appears during the track intervals when A. Space is turned on.
A new recordable MD or a recordable MD without disc or track names is inserted.
An attempt was made to record copyright-protected material. An attempt was made to make a
second copy from a digitally dubbed MD
An attempt was made to edit the disc during MEMORY or RANDOM play or in recording standby
mode, or an attempt to edit a premastered disc was made.
An attempt was made to record onto a premastered (read-only) disc.
The CD dubbing operation could not be enabled. Check the connections. (An RI cable or audio
pin cable is not connected. "Digital In 1" is not selected as an input source, or the amplifier or CD
player is not turned on.)
Editing is complete.
The digital equipment (CD player, DAT, etc.) has not been connected properly. Otherwise, the
connected digital equipment is not operating properly.
The disc is abnormal (scratched or missing a TOC).
The disc is full.
An attempt was made to enter a character that exceeds the maximum character capacity.
The disc could not be edited.
An error occurred in the unit fs internal mechanism.
An attempt was made to record a 26th track.
Music Scan has started.
Number of characters has reached the limit for input to one MD.
The naming attempt failed.
There is no disc in the unit.
The inserted disc has a disc title but no tracks.
In pause mode (when playing is paused), the >>(Fast Forward) button was pressed to the end
of the disc.
The inserted disc is record-protected.
The recording attempt failed due to a consecutive disturbance or scratches on the MD.
The unit has entered Signal Wait mode.
Synchro recording has started.
The unit is reading the TOC from the MD.
The unit is writing the recorded or edited contents to the MD.
The writing of the recorded or edited contents failed. Something is wrong with the TOC.

SERVICE PROCEDURES

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs a laser. Therefore, be sure to follow
carefully the instructions below when servicing.

WARNING!!

SERVICE WARNING : DO NOT APPROACH THE
LASER EXIT WITH THE EYE TOO CLOSELY.
IN CASE IT IS NECESSARY TO CONFIRM LASER
BEAM EMISSION, BE SURE TO OBSERVE FROM
A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE
OPTICAL PICKUP BLOCK.

LASER W ARNING LABEL

The labels shown below are affixed.

1. Warning label

Laser Diode Properties

Material:
Wavelength:
Emission Duration:
Laser output:

2. Class 1 label

"CLASS 1 LASER
PRODUCT"

GaAS/GaAlAs
780 nm
Continuous
MAX. 7 mW

MD-101A

LUOKAN 1
LASERLAITE

KLASS 1
LASER APPARAT

SERVICE PROCEDURE

1. Replacing the fuses

REF. NO.

F901

[NOTE ]

<GT> : Asian model
<GR> : Chinese model

PART NO.

252074

2. To initialize the unit

(1) Connect the power supply cord in the wall socket.
(2) Press the STANDBY/ON button to turn the power source on.
(2) While hold down the YES button, press the DISPLAY button.
(4) Press the STANDBY/ON button.
(5) Disconnect the power supply cord.

DESCRIPTION

2A-SE-EAK, Fuse <GT, GR>

DANGER:

INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCK FAILED OR DEFEATED. AVOID DIRECT
EXPOSURE TO BEAM.

CAUTION:

HAZARDOUS LASER AND ELECTROMAGNETIC
RADIATION WHEN OPEN AND INTERLOCK DEFEATED.

ATTENTION:

RAYONNEMENT LASER ET ELECTROMAGNETIQUE
DANGEREUX SI OUVERT AVEC L'ECLENCHEMENT
DE SECURITE ANNULE.

3. How to reset the unit compulsorily

Used when it becomes impossible to eject a disk.

Continues pressing the

STOP

button more than for 5 seconds.

P ANEL VIEWS-1

FRONT PANEL

Ventilation
holes

MD-101A

CD DUBBING
button

Remote control
sensor

STANDBY/ON
button

STANDBY
indicator

INPUT
button

DISPLAY
button

Disc slot

REC MODE
button

Display

EDIT/NO
button

REC button

Play/Pause button

( )

( REC)

YES button

Eject button

MULTI JOG knob

( )

FF/FR button
( )

Stop button

( )

( )

DISPLAY

DISC/TRACK
indicator

NAME
indicator

Input setting indicator

A.SPACE
indicator

TOC indicator

REC indicator

PAUSE indicator

PLAY indicator

REC MODE
indicator

Time/Title
display

L.SYNC indicator

Peak level
meter

MEMORY
indicator

RANDOM

indicator

REPEAT/REPEAT1
indicator

P ANEL VIEWS-2

CONNECTING TO THE OTHER COMPONENTS

This unit uses heat-sensitive parts. Do not place this unit on the Amplifier or Receiver.

Connections

MINIDISC RECORDER

REMOTE

CONTROL

cable

MODEL NO. MD-101A

DIGITAL INPUT

12

2

OUT

CD player,
DAT deck, etc.

AC OUTLET

AC 220

-230 V
50 / 60 Hz
UNSWITCHED
100 W MAX.

3

Audio
connection
cable

LR LR

1

OUT IN

ANALOG

INPUT OUTPUT

L

R

Optical fiber
cable

Amplifier

MD-101A

To wall outlet

Connecting to the Amplifier

1

Connect the MD-101A to the MD (or TAPE)

jacks of your amplifier.

2

Connecting to the Digital Input
Terminals (DIGITAL INPUT 1, 2)

You can perform digital recording on the MD­101A if a CD (Compact Disc) player or DAT
(Digital Audio Tape) deck equipped with a digital
(OPTICAL) output terminal is available. For digital
recording, you need to connect the equipment
to either DIGITAL INPUT 1 or 2 terminal using
the supplied optical cable.
These terminals can also
be used for connecting an
amplifier that is equipped
with a digital output
terminal.

Note

If you use DIGITAL INPUT 2 to connect an
amplifier, you will be unable to utilize the full
capabilities of the MD-101A.
If you attempt to perform digital recording using
a digital input terminal that is not connected,
"D.In Unlock " will appear.

Terminal protection caps are attached to the
DIGITAL INPUT terminals. Remove the cap for the
terminal you wish to use when connecting the
MD-101A to digital equipment. Replace the caps
if you are not using the DIGITAL INPUT terminals.

3

Connection to AC outlet
(UNSWITCHED)

The power cord of another unit can be connected
to this outlet.

Note

The shape, number, and total capacity of the AC
outlets may differ depending on the area in which
the unit is purchased.
230-240 V, 50/60 Hz model: Capacity is 100 W in
total.
120 V, 60 Hz model: Capacity is 120 W in total.

230-240V, 50/60Hz models

Capacity is
100 watts.

120V, 60Hz models

Capacity is
120 watts.

REMOTE CONTROLLER

RC-475MD (supplied)

MD-101A

STANDBY/ON button

PLAY MODE buttons
CONTINUE buttons
RANDOM button
MEMORY button

Number buttons

REPEAT button

MD operation buttons

Stop button ( )
Play button (
Pause button (
Rec button (

)

)

REC)

Fast reverse button (

Fast forward button (

Down button ( )
Up button (

)

SCROLL button

STANDBY/ON

EJECT

EJECT button

PLAY MODE

CONTINUE

RANDOM MEMORY

ABCDE

1

2345

FGHI J

6117
KLMNO

PQRST

16

UVWXY

21

Z

>

25

/

REC

8

9

13

12

17

22

REPEAT A-B A.SPACE M.SCAN

?

14

18

19

23

24

!

SCROLL DISPLAY

.,

(

CLEAR

ENTER

NAME

10

15

20

25

)

)

A-B repeat button

Uppercase and
lower case letters,
symbols, and
numbers (1~10)
buttons

A.SPACE button

M.SCAN button

CLEAR button

ENTER button

NAME button

)

REMOTE CONTROLLER RC-

475

MD

DISPLAY button

RC-466S
(supplied with the R-801A)

Mode button (MODE)

Repeat button (REPEAT)

Clear button (CLEAR)

Stop button ( )

Scroll button (SCROLL)

Number buttons

STANDBY/ ON

CDR/PC

CD/ DVD

TAPE REW TAPE FF

SLEEP TIMER ENTER

MODE

REPEAT

CLEAR

SCROLL

1

5

9

ACOUSTIC

PRESENCE

TAPE

MD FM AM

U

L

O

V

UP

MUTING

DOWN

CLOCK

CD/DVD

CDR/PC

2

6

10/0

REMOTE CONTROLLER

INPUT SELECTOR

M

E

TAPE

MD

3

7

--/---

-

466S

RC

4

8

, button

, button

Pause button ( )

Play button ( )

EXPLODED VIEW

MD-101A

19

P901

43

E801

46

43

17

41

F901

U5

47

Z1

P702

18

18

J10

Z5

23

U2

23

15

3

Z4

U1

Z3

8

U4

3

18

P801

21

44

23

24

1

U3

T901

5

11

15

15

27

3

39

13

11

31

32

33

3

MD-101A

3

EXPLODED VIEW PARTS LIST

MD-101A

REF NO. PART NO. DESCRIPTION

1 27111252 Front bracket
3 838130088
5 27100411
8 27191159
11 28141489
13 27190503A
15 838430107
17 830440069
18 29110083
19 27300750
21 28184826
23 838930088
24 28141472A
27 27212354
31 28191944A
32 28191945
33 28198939
39 28325966
41 27122915

*

41 27122916 Rear panel <GT>

*

41 27122917 Rear panel <GR>

*

43 838430088
44 29362968

*

44 29360687
46 27191143
47 29362285

NOTE: THE COMPONENTS IDENTIFIED BY MARK ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE ONLY WITH PART NUMBER SPECIFIED.

[Notes]

This model may be produced in the case where it is manufactured in Malaysia, and Japan.
About the parts which have the mark on REF NO., part numbers differ by the case of the Malaysia production, and the case of
production of Japan.
When you exchange this part, check the manufacture place of the origin on the rear panel, and use the same parts.

27122915-1 Rear panel <DT>

27122916-1 Rear panel <GT>

27122917-1 Rear panel <GR>

29362968-1

3TTB+8B, Self tapping screw
Chassis
Holder, M
Cushion, Reg
KGLS-8RF, Holder
3TTB+10S(BC), Self tapping screw

4TTC+6C(BC), Self tapping screw
TAPE(CROSS-16U)
Bushing, #2271
Top cover

3TTB+8B(UN), Self tapping screw
Cushion
Front panel
Clear plate
Clear plate, RE
Facet, S
Knob, JOG
Rear panel <DT>

3TTB+8B(BC), Self tapping screw

, CLASS1 SPEC, <GR>

Label
Label,

CLASS1 SPEC, <GR>
Label, CLASS-1 <GT>
Holder <GR>
Label, caution

MANUFACTURED IN MALAYSIA
MADE IN JAPAN

MANUFACTURED IN MALAYSIA
MADE IN JAPAN

MANUFACTURED IN MALAYSIA
MADE IN JAPAN

MANUFACTURED IN MALAYSIA
MADE IN JAPAN

*

REF NO. PART NO. DESCRIPTION

E801 260208 Binder, UL
P901 253336VOL or

253335HIT

P901

P901 253333VOL or

T901 2301545

J10 1F999013UL Faston AS
P702 2045291512
P801 204417023

F901 252074
U1 1H478598-1B

U2 1H478599-1B

U3 1H478500-1B

U4 1H478501-1B

U5 1H478502-1B

Z1 24650035 KMK-260EDN, MD Mechanism
Z3 24611665

Z4 24605828
Z5 24604139A

253337HIT or
253338VOL

253332HIT

2301554

1H478598-1C
1H478598-1D

1H478599-1C
1H478599-1D

1H478500-1C
1H478500-1D

1H478501-1C
1H478501-1D

1H478502-1C
1H478502-1D

AS-CEE or
AS-CEE, Power supply cord <GT>

AS-CCEE or
AS-CCEE, Power supply cord <GR>

AS-UC-2 or
AS-UC-2, Power supply cord <DT>

NPT-1424D, Power transformer <DT>
NPT-1424G, Power transformer <GT,GR>

NCFC5-291512, Flexible flat cable
NCFC4-17023, Flexible flat cable

2A-SE-EAK , Fuse <GT,GR>
NAAR-7298-1B, Main circuit PC board ass'y <DT>
NAAR-7298-1C, Main circuit PC board ass'y <GT>
NAAR-7298-1D, Main circuit PC board ass'y <GR>
NADG-7299-1B, Microprocessor PC board ass'y <DT>
NADG-7299-1C, Microprocessor PC board ass'y <GT>
NADG-7299-1D, Microprocessor PC board ass'y <GR>
NAPS-7300-1B, Power supply PC board ass'y <DT>
NAPS-7300-1C, Power supply PC board ass'y <GT>
NAPS-7300-1D, Power supply PC board ass'y <GR>
NADIS-7301-1B, Display PC board ass'y <DT>
NADIS-7301-1C, Display PC board ass'y <GT>
NADIS-7301-1D, Display PC board ass'y <GR>
NAETC-7302-1B, AC outlet PC board ass'y <DT>
NAETC-7302-1C, AC outlet PC board ass'y <GT>
NAETC-7302-1D, AC outlet PC board ass'y <GR>

Door
Spring

Shaft

NOTE:

<DT> : Taiwanese model only
<GT> : Asian model only
<GR> : Chinese model only

MD-101A

EXPLODED VIEWS OF MECHANISM-1

MD MECHANISM: KMK-260EDN

35

34

MD-101A

35

35

13

11

9

8

SW1-SW4

10

3

32

14

15

20

21

33

16

17

13
11

23

18

24

7

4

6

5

31

26

27

2

1

2

30

PARTS LIST

REF NO. PART NO. DESCRIPTIONREF NO.

10 --- Load Frame ass'y
11 2646-548-01 Insulator
13 2647-337-01 Screw, Step
14 --- Slide Frame
15 2646-559-02 Arm, head
16 2646-561-01 Spring, SP Tension

PART NO. DESCRIPTION

1 --- Motor Plate ass'y
2 7685-791-01 Screw +PTT2.6 x 5(S)
3 --- L-SW PC board
4 1792-100-21 Flexible flat cable(5 core)
5 2646-555-02 Gear(Relay B)
6 2646-554-01 Gear(Relay A)
7 X2646-726-1 Frame ass'y, slot
8 2646-563-01 Spring(Slot arm), Tension coil
9 2646-556-01 Slot Arm

17 2646-562-01 Spring, Tension coil
18 2646-560-02 Cam, mode
20 2627-529-01 Screw(+P1.7 x 2.5 Type2)
21 8620-021-71 MD Over write head
23 --- MD mount
24 7685-791-09 Screw(+PTT2.6 x 5 Type S)
26 2646-545-01 Spring(Door arm), Tension coil
27 --- Case(Lower)
30 X2626-328-1 Loading motor ass'y
31 7627-852-38 precision screw(+P1.7 x 1.8 Type 3)
32 7685-780-09 Screw +PTT2×3(S)
33 --- Loading ass'y
34 --- Case(Upper)
35 7621-259-25 Screw (+P2.6×4)

The mechanical parts with no part number
in the exploded views are not supplied.

EXPLODED VIEW OF MECHANISM-2

MD MECHANISM: KMK-260EDN

MD-101A

69

65

64

68

66

63

57

51

67

58

56

57

52

51

51

59

55

53

54

71

61

59

60

62

70

PARTS LIST

REF. NO. PART NO. DESCRIPTION

51 3348-998-51 Pan tapping screw(M1.4×3.5)
52 2167-550-01 Plate(M), Pre load
53 --- Wire, SL motor lead
54 --- Wire, SL motor lead
55 X2162-145-1 Sled motor ass'y
56 2646-571-11 Gear(MD)
57 2167-551-01 Plate(M), main shaft fixed
58 X2162-144-1 Screw ass'y, lead
59 2646-358-11 Screw(B1.7 x 4)
60 X2162-143-1 Spindle motor ass'y
61 --- Mounted, PWD(D)SW
62 --- Chassis(M), mehanical
63 3039-041-01 Screw(M1.4 x 3)
64 2168-512-01 Plate, protection
65 2167-819-01 Shaft(M), guide
66 2647-338-01 Spring, rack
67 2627-529-01 Grip(1.7 x 2.5 type2)
68 8583-079-06 Optical pick up, KMS-260E
69 --- Deck ass'y, mechanical
70 1669-180-11 OP Flexible flat cable
71 1783-387-11 Flexible flat cable(7core)

The mechanical parts with no part number
in the exploded views are not supplied.

EXPLODED VIEWS OF MECHANISM-3

MD MECHANISM: KMK-260EDN

MD-101A

MD Mount view

IC121

IC125

Test point-A
for adjustment

RF

VC

TE

IOP

I+3V

AGND

Side-A

IC171

IC201

D101

IC101

CN102

CN104

To over write head

CN110

Test point-B
for adjustment

RF

VC

TE

CN106

FE

IOP

I+3V

WP

CN103

Test point
(No use)

IC104

IC105

To main borad

IC301

D183
D181

To L-SW PCB

Side-B

Q162

Q102

Q101
IC103

Q103

X201

IC102

CN101

To pick-up unit

IC152

CN105

To D-SW PCB

Q182
Q181

IC181