Sony MDS-JE480 Service Manual ▷ View online
4
MDS-JE480
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Selecting the Test Mode
Display
op rec tm
op play tm
spdl rp tm
retry err
total err
err history
retry adrs
er refresh
tm change
op 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.
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”
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”
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 “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 “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 “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.
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.
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
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.
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
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.
When “Complete!” is displayed, it means erasure has completed.
1. While pressing the lAMSL knob and x button, connect the power plug to the outlet, and release the lAMSL knob and
x button.
When the test mode is set, “[Check]” will be displayed.
When the test mode is set, “[Check]” will be displayed.
2. Rotate the lAMSL knob and when “[Service]” is displayed, press the YES button.
3. Rotate the lAMSL knob and display “Err Display”.
4. Pressing the YES button sets the error history mode and displays “op rec tm”.
5. Select the contents to be displayed or executed using the lAMSL knob.
6. Pressing the lAMSL knob will display or execute the contents selected.
7. Pressing the lAMSL knob another time returns to step 4.
8. Pressing the MENU/NO button displays “Err Display” and exits the error history mode.
9. To exit the test mode, press the REPEAT button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends.
3. Rotate the lAMSL knob and display “Err Display”.
4. Pressing the YES button sets the error history mode and displays “op rec tm”.
5. Select the contents to be displayed or executed using the lAMSL knob.
6. Pressing the lAMSL knob will display or execute the contents selected.
7. Pressing the lAMSL knob another time returns to step 4.
8. Pressing the MENU/NO button displays “Err Display” and exits the error history mode.
9. To exit the test mode, press the REPEAT button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends.
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.