Sony MDS-JE480 Service Manual ▷ View online
5
MDS-JE480
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.
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.
Description
Table of Error Codes
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.
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
MODEL
US model
AEP and Russian models
UK model
PARTS No.
4-238-633-0s
4-238-633-5s
4-238-633-6s
TABLE OF CONTENTS
1. SERVICING NOTES
........................................................ 6
2. GENERAL
........................................................................ 12
3. DISASSEMBLY
3-1. Disassembly flow .............................................................. 13
3-2. Upper Case (408226) ........................................................ 14
3-3. Front Panel Section ........................................................... 14
3-4. Main Board ....................................................................... 15
3-5. PT Board ........................................................................... 15
3-6. Mechanism Deck Section ( MDM-7S1A) ........................ 16
3-7. Over Light Head (HR901), BD Board .............................. 16
3-8. Holder Assy ....................................................................... 17
3-9. Loading Motor Assy (M103) ............................................ 17
3-10. Sled Motor Assy (M102), Slider ....................................... 18
3-11. Optical Pick-up .................................................................. 18
3-12. Spindle Motor Assy (M101) ............................................. 19
3-2. Upper Case (408226) ........................................................ 14
3-3. Front Panel Section ........................................................... 14
3-4. Main Board ....................................................................... 15
3-5. PT Board ........................................................................... 15
3-6. Mechanism Deck Section ( MDM-7S1A) ........................ 16
3-7. Over Light Head (HR901), BD Board .............................. 16
3-8. Holder Assy ....................................................................... 17
3-9. Loading Motor Assy (M103) ............................................ 17
3-10. Sled Motor Assy (M102), Slider ....................................... 18
3-11. Optical Pick-up .................................................................. 18
3-12. Spindle Motor Assy (M101) ............................................. 19
4. TEST MODE
......................................................................20
5. ELECTRICAL ADJUSTMENTS
............................... 25
6. DIAGRAMS
6-1. Circuit Boards Location ...................................................... 36
6-2. Block Diagrams
6-2. Block Diagrams
• BD Section ....................................................................... 38
• Main Section .................................................................... 39
• Main Section .................................................................... 39
6-3. Printed Wiring Board – BD Board – ................................... 40
6-4. Schematic Diagram – BD Section (1/2) – ........................... 41
6-5. Schematic Diagram – BD Section (2/2) – ........................... 42
6-6. Schematic Diagram – Main Section (1/2) – ........................ 43
6-7. Schematic Diagram – Main Section (2/2) – ........................ 44
6-8. Printed Wiring Board – Main Section – ............................. 45
6-9. Printed Wiring Board – Display Section – .......................... 46
6-10. Schematic Diagram – Display Section – .......................... 47
6-11. Printed Wiring Board – Power Section – ......................... 48
6-12. Schematic Diagram – Power Section – ............................ 48
6-13. IC Pin Function Discription ............................................ 49
6-14. IC Block Diagrams ........................................................... 55
6-4. Schematic Diagram – BD Section (1/2) – ........................... 41
6-5. Schematic Diagram – BD Section (2/2) – ........................... 42
6-6. Schematic Diagram – Main Section (1/2) – ........................ 43
6-7. Schematic Diagram – Main Section (2/2) – ........................ 44
6-8. Printed Wiring Board – Main Section – ............................. 45
6-9. Printed Wiring Board – Display Section – .......................... 46
6-10. Schematic Diagram – Display Section – .......................... 47
6-11. Printed Wiring Board – Power Section – ......................... 48
6-12. Schematic Diagram – Power Section – ............................ 48
6-13. IC Pin Function Discription ............................................ 49
6-14. IC Block Diagrams ........................................................... 55
7. EXPLODED VIEWS
7-1. Chassis Section ................................................................... 58
7-2. Front Panel Section ............................................................. 59
7-3. Mechanism Section-1 (MDM-7S1A) ................................. 60
7-4. Mechanism Section-2 (MDM-7S1A) ................................. 61
7-2. Front Panel Section ............................................................. 59
7-3. Mechanism Section-1 (MDM-7S1A) ................................. 60
7-4. Mechanism Section-2 (MDM-7S1A) ................................. 61
8. ELECTRICAL PARTS LIST
........................................ 62
Display
History
spdl change
Ver. 1.3
6
MDS-JE480
JIG FOR CHECKING BD BOARD WAVEFORM
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.
performed are shown as follows.
GND : Ground
I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser)
Iop
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
Iop
GND
TE
FE
VC
RF
FE
VC
RF
I+3V
Iop
GND
TE
FE
FE
VC
RF
1
7
for
MDM-7S1A
I+3V
CN105
Iop
TE
VC
GND
FE
RF
SECTION 1
SERVICE NOTES
7
MDS-JE480
Iop DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF
BD BOARD) ARE REPLACED
BD BOARD) ARE REPLACED
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 or non-volatile memory (IC195 of BD board),
record the Iop value on the optical pick-up according to the following procedure.
to look at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC195 of BD board),
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
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.
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
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
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
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.
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.
8
MDS-JE480
OPTICAL PICK-UP BLOCK TYPE DISCRIMINATION
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 28)
• 5-10. LASER POWER ADJUSTMENT (See page 31)
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 28)
• 5-10. LASER POWER ADJUSTMENT (See page 31)
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
KSN-260B
KSN-260E
(Fig A)
(Fig B)
CHIP
3 type variable
resistor
resistor
2 type variable
resistor
resistor
CHIP
Hold on SL base
Hold on SL base
FPC retainer plate
FPC retainer plate
APC variable
resistor
resistor
Adhesive agent at
PDIC portion
PDIC portion
Adhesive agent at
PDIC portion
PDIC portion
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