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4

Display

op rec tm

op play tm

spdl rp tm

retry err

total err

err history

retry adrs

er refresh

tm change

op change

spdl change

History

Displays the total recording time.
When the total recording time is more than 1 minute, displays the hour and minute
When less than 1 minute, displays “Under 1 min”
The display time is the time the laser is set to high power, which is about 1/4 of the actual recording time.

Displays the total playback time.
When the total playback time is more than 1 minute, displays the hour and minute
When less than 1 minute, displays “Under 1 min”

Displays the total rotating time of the spindle motor.
When the total rotating time is more than 1 minute, displays the hour and minute
When less than 1 minute, displays “Under 1 min”

Displays the total number of retry errors during recording and playback
Displays “r xx p yy”. xx is the number of errors during recording. yy is the number of errors during playback.
This is displayed in hexadecimal from 00 to FF.

Displays the total number of errors
Displays “total xx”. This is displayed in hexadecimal from 00 to FF.

Displays the past ten errors.
Displays “0x ErrCd@@”.
X is the history number. The younger the number, the more recent is the history (00 is the latest). @@ is the error
code.
Select the error history number using the  lAMSL  knob.

Displays the past five retry addresses.
Displays “xx ADRS yyyy”, xx is the history number, yyyy is the cluster with the retry error.
Select the error history number using the  lAMSL  knob.

Mode for erasing the error and retry address histories
Procedure
1. Press the  lAMSL  knob when displayed as “er refresh”.
2. Press the  YES  button when the display changes to “er refresh?”.
When “complete!” is displayed, it means erasure has completed.
Be sure to check the following after executing this mode.
*Data has been erased.
*Perform recording and playback, and check that the mechanism is normal.

Mode for erasing the total time of recording and playback
Procedure
1. Press the  

lAMSL

  knob when displayed as “tm refresh”.

2. Press the  YES  button when the display changes to “tm refresh?”.
When “complete!” is displayed, it means erasure has completed.

Mode for erasing the total time of op rec tm, op play tm.
These histories are based on the time of replacement of the optical pickup. If the optical pick-up has been replaced,
perform this procedure and erase the history.
Procedure
1. Press the  lAMSL

 

  knob when displayed as “op change”.

2. Press the YES button when the display changes to “op chang?”.
When “Complete!” is displayed, it means erasure has completed.

Mode for erasing the total spdl rp tm time
These histories are based on the time of replacement of the spindle motor. If the spindle motor has been replaced,
perform this procedure and erase the history.
Procedure
1. Press the  lAMSL  knob when displayed as “spdl change”
2. Press the  YES  button when the display changes to “spdl chang?”
When “Complete!” is displayed, it means erasure has completed.

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)