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5

Description

Error Code

10

12

20

21

22

23

24

30

31

40

41

42

43

50

51

Could not load

Loading switches combined incorrectly

Timed out without reading the top of PTOC

Could read top of PTOC, but detected error

Timed out without accessing UTOC

Timed out without reading UTOC

Error in UTOC

Could not start playback

Error in sector

Retry cause generated during normal recording

Retried in DRAM overflow

Retry occurred during TOC writing

Retry aborted during S.F editing

Other than access processing, and could not read address.

Focus NG occurred and overran.

— BACK PANEL —

Part No.

AEP and RU models

UK model

SP model

4-238-939-1

s

4-238-939-2

s

4-238-939-5

s

........................................................ 6

........................................................................ 11

3-1.   Disassembly flow .............................................................. 12
3-2.   Upper Case ........................................................................ 13
3-3.   Front Panel Section ........................................................... 13
3-4.   USB Board, Main Board ................................................... 14
3-5.   PT Board, VOL SEL Board (SP model only) ................... 14
3-6.   Mechanism Deck Section ( MDM-7S1A) ........................ 15
3-7.   Over Light Head (HR901), BD Board .............................. 15
3-8.   Holder Assy ....................................................................... 16
3-9.   Loading Motor Assy (M103) ............................................ 16
3-10. Sled Motor Assy (M102), Slider ....................................... 17
3-11. Optical Pick-up (KMS-260B/260E) .................................. 17
3-12. Spindle Motor Assy (M101) ............................................. 18

  ......................................................................19

............................... 23

6-1. Circuit Boards Location ...................................................... 33
6-2. Block Diagrams

• BD Section ....................................................................... 34
• Main Section .................................................................... 35

6-3. Printed Wiring Board – BD Board – ................................... 36
6-4. Schematic Diagram – BD Section (1/2) – ........................... 37
6-5. Schematic Diagram – BD Section (2/2) – ........................... 38
6-6. Schematic Diagram – Main Section (1/2) – ........................ 39
6-7. Schematic Diagram – Main Section (2/2) – ........................ 40
6-8. Printed Wiring Board – Main Section  – ............................. 41
6-9. Printed Wiring Board – Display Section – .......................... 42
6-10.  Schematic Diagram – Display Section – .......................... 43
6-11.  Printed Wiring Board – USB/Power Section – ................ 44
6-12. Schematic Diagram – USB/Power Section – ................... 45
6-13.  IC Pin Function  Description ........................................... 46
6-14. IC Block Diagrams ........................................................... 51

7-1. Chassis Section-1 ................................................................ 54
7-2. Chassis Section-2 ................................................................ 55
7-3. Front Panel Section ............................................................. 56
7-4. Mechanism Section-1 (MDM-7S1A) ................................. 57
7-5. Mechanism Section-2 (MDM-7S1A) ................................. 58

........................................ 59

• Abbreviation

SP

: Singapore model

RU

: Russian model

6

The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be
performed are shown as follows.

GND : Ground
I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser)
Iop

: For measuring Iop (Check the deterioration of the optical pick-up laser)

TE

: TRK error signal (Traverse adjustment)

VC

: Reference level for checking the signal

RF

: RF signal (Check jitter)

FE

: Focus error signal

I+3V
Iop
GND
TE
FE
VC
RF

I+3V

Iop

GND

TE
FE

VC

RF

1

7

for

MDM-7S1A

I+3V

CN105

Iop TE VC

GND

FE

RF

The Iop value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need
to look at the value on the label of the optical pick-up. When replacing the optical pick-up, record the Iop value on the optical pick-up
according to the following procedure.

Record Procedure:
1. While pressing the  l AMS L  knob and  x  button, connect the power plug to the outlet, and release the  l AMS L  knob and

x  button.

2. Rotate the  l AMS L  knob to display “[Service]”, and press the  YES  button.
3. Rotate the  l AMS L  knob to display “Iop Write” (C05), and press the  YES  button.
4. The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.
5. Input the Iop value written on the optical pick-up.

To select the number : Rotate the  l AMS L  knob.
To select the digit

: Press the  l AMS L  knob.

6. When the  YES  button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).
7. As the adjustment results are recorded for the 6 value. Leave it as it is and press the  YES  button.
8. “Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop

Write”.

9. Press the  REPEAT  button to complete.

Display Procedure:
1. While pressing the  l AMS L  knob and  x  button, connect the power plug to the outlet, and release the  l AMS L  knob and

x  button.

2. Rotate the  l AMS L  knob to display “[Service]”, and press the  YES  button.
3. Rotate the  l AMS L  knob to display “Iop Read” (C26).
4. “@@.@/##.#” is displayed and the recorded contents are displayed.

@@.@ : indicates the Iop value labeled on the optical pick-up.
##.#

: indicates the Iop value after adjustment

5. To end, press the  l AMS L  button or  MENU/NO  button to display “Iop Read”. Then press the  REPEAT  button.

7

There are two types of the optical pick-up block in this model.
These are compatible except  for the laser power.
Check the type of the optical pick-up block before replacement.
Ajdust  following items after replacing the optical pick-up block.
• 5-6-2. Laser Power Check (See page 26)
• 5-10. LASER POWER ADJUSTMENT (See page 29)

Differences

KMS-260B

       KMS-260E

Color of the adhesive agent at PDIC portion

Pink

White

Form of FPC retainer plate

Close the hole on SL base

Not close the hole on SL base

APC variable resistor

Small volume (2 type)

Big variable resistor (3 type) and chip resistor (Fig. A)

Small variable resistor (2 type) and chip resistor (Fig. B)

Fig. B type is for repair.

• Abbreviation

260B: KMS-260B model

260E: KMS-260E model

(Fig A)

(Fig B)

CHIP

3 type variable
resistor

2 type variable
resistor

CHIP

Hold on SL base

Hold on SL base

FPC retainer plate

FPC retainer plate

APC variable
resistor

Adhesive agent at 
PDIC portion

Adhesive agent at 
PDIC portion

In cleaning the lens, do not apply an excessive force

   As the optical pick-up is vulnerable, application of
   excessive force could damage the lens holder.

In cleaning, do not use a cleaner other than exclusive

   cleaning liquid. (KK-91 or isopropyl alcohol)

Wipe the obujective lens spirally from center toward

    outside. (See Figure A)

Eject the disc, if loaded.

Disconnect the power cord from the socket to shut off

   

the power supply.

(Figure A)

8

Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent.
Details of the procedures are described in “5 Electrical Adjustments”.

• 5-6-2. Laser power check (see page 26)
• 5-6-3. Iop Compare (see page 26)
• 5-6-4. Auto Check (see page 27)

The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for
adjustments.
When performing adjustments, use the specified values for adjustments.

The system microprocessor can be reset in the following procedure.
Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.
Procedure :
Remove the short-pin attached to CN404, and then attach it again.

CN404

In replacing the BD board or MD mechanism deck, perform the
work through the steps provided below:

1. Remove the IC195 from the BD board to be replaced.
2. Remove the IC195 from new BD board.
3. Mount the IC195 on new BD board, which was removed from
the BD board to be replaced.
4. Install new BD board in the set.

 The IC195 cannot be replaced with a new part.

Aiso in checking the recording and other functions, connect the
set to the PC with a USB cable and perform the operation on the
application software “OpenMG Jukebox” attached.

CN103

CN102

IC195

1

41

58

1

27

23