DOWNLOAD Sony MDS-MX101 Service Manual ↓ Size: 6.49 MB | Pages: 46 in PDF or view online for FREE

— 2 —

1-1.

Check Mode of Fluorescent Indicator Tube,
Buttons, and LED’s ........................................................

3

1-3.

Extension Cable ..............................................................

3

..................................................................

4

3-1.

Cover and Front Panel ....................................................

5

3-2.

Mechanism Deck ............................................................

5

3-3.

Digital Board ..................................................................

5

3-4.

OPJ Board, Power Board ................................................

6

3-5.

Bracket (T), (L) and (R) .................................................

6

3-6.

BD Board ........................................................................

7

3-7.

Sub Chassis .....................................................................

7

3-8.

Shutter Assembly ............................................................

8

3-9.

Over Write Head .............................................................

8

3-10. Slider Complete Assembly .............................................

9

........................................................

10

......................... 13

6-1.

Circuit Boards Location ................................................. 18

6-2.

Block Diagram ............................................................... 19

6-3.

Printed Wiring Boards
– MD Mechanism Deck Section – ................................. 22

6-4.

Schematic Diagram
– MD Mechanism Deck Section – ................................. 25

6-5.

Schematic Diagram – Digital Section – ......................... 31

6-6.

Printed Wiring Boards – Digital Section – ..................... 35

6-7.

Schematic Diagram – Display Section – ........................ 38

6-8.

Printed Wiring Boards – Display Section – .................... 41

6-9.

Printed Wiring Boards – Power Section – ...................... 43

6-10. Schematic Diagram – Power Section – .......................... 45
6-11. IC Block Diagrams ......................................................... 47
6-12. IC Pin Functions ............................................................. 49

................................................ 56

................................. 60

CAUTION

Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.

This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.

Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.

The following caution label is located inside the unit.

The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.

The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

•

Never reuse a disconnected chip component.

•

Notice that the minus side of a tantalum capacitor may be damaged
by heat.

•

Keep the temperature of the soldering iron around 270 ˚C during
repairing.

•

Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

•

Be careful not to apply force on the conductor when soldering or
unsoldering.

Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instructions.

— 3 —

Setting the Check Mode:
This mode is activated by inserting the AC power cord of the  PFJ-
1 power supply jig (or HCD-101) into AC wall outlet while pressing
the REC button and the CHARACTER button.  When this mode
started, the fluorescent indicator tube and LEDs are all turned on.

1-1-1. Button Check Mode (Key Check)

When the respective buttons (12 buttons are used in total)
are pressed while all tube and LEDs are turned on, the
display area which corresponds to the pressed button, is
turned off.  This mode ends by pressing the CD SYNC button
at last.

1-1-2. Fluorescent Indicator Tube Check Mode (Segment

Check)

When the button check mode ends, [Segment Check]
appears and the respective dots of the 12-digit, 5 x 7 segment
fluorescent tube are lit every other dot.  This mode ends by
pressing the CD SYNC button at last.

1-1-3. Fluorescent Indicator Tube Check Mode (Scroll Check)

When the segment check ends, [Scroll Check] appears.
When the SCROLL button is pressed, the displayed letter
scrolls to the left one letter after another.  When all letters
are scrolled, [end] appears.  Press YES button to return to
the normal operating mode.

The two types of extension cable are available during repair of this
set.  The extension cable (part code no. J-2501-086-A) is available
to connect CN103 of the BD board and CN200 of the DIGITAL
board.  The extension cable (part code no. J-2501-103-A) is available
to connect CN102 of the BD board and CN201 of the DIGITAL
board.

SERVICENG NOTE
•

Supplying power during servicing

This equipment cannot operate without using a separate power supply. Connect the machine to the HCD-101. To apply power set the
SYSTEM POWER switch of HCD-101.
When other units are not available use the PFJ-1 power supply jig.
When using the PFJ-1, press the POWER switch of the conversion board to turn on the power.

*

— 4 —

This section is extracted
from instruction manual.

1  Display window
2  MD slot
3  6 EJECT button

4  r REC button

5  CD SYNC button
6  =

 

0 (finding a point in a track/

       fast backward) button
     

  

)

+ (finding a point in a track/

       fast forward) button
7  EDIT/NO button
8  YES button
9  SCROLL button, DISPLAY button/
     

?CURSOR/ button

0  CHARACTER button
!¡  p (stop) button

!™  ^ (play/pause) button

— 5 —

 Follow the disassembly procedure in the numerical order given.

1

4

2

3

5

3

2

1

6

4

1

1

4

5

3

2