Sony MDS-JE480 Service Manual ▷ View online
3
MDS-JE480
SELF-DIAGNOSIS FUNCTION
The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which
show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box
in the instruction manual. For details on how to check error codes during servicing, refer to the following “Procedure for using the Self-
Diagnosis Function (Error History Display Mode)”.
show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box
in the instruction manual. For details on how to check error codes during servicing, refer to the following “Procedure for using the Self-
Diagnosis Function (Error History Display Mode)”.
Self-diagnosis function
The deck’s self-diagnosis function automatically checks
the condition of the MD deck when an error occurs, then
issues a three- or five-digit code and an error message on
the display. If the code and message alternate, find them in
the following table and perform the indicated
countermeasure. Should the problem persist, consult your
nearest Sony dealer.
the condition of the MD deck when an error occurs, then
issues a three- or five-digit code and an error message on
the display. If the code and message alternate, find them in
the following table and perform the indicated
countermeasure. Should the problem persist, consult your
nearest Sony dealer.
Three- or five-
digit code/
Message
digit code/
Message
Cause/Remedy
C11/Protected
, Take out the MD and close the record-
protect slot.
C12/Cannot Copy
You tried to record a CD with a format
that the external device connected to the
deck does not support, such as CD-ROM
or video CD.
, Remove the disc and insert a music
that the external device connected to the
deck does not support, such as CD-ROM
or video CD.
, Remove the disc and insert a music
CD.
C13/REC Error
, Set the deck in a stable surface, and
repeat the recording procedure.
The inserted MD is dirty (with smudges,
fingerprints, etc.), scratched, or
substandard in quality.
, Replace the disc and repeat the
fingerprints, etc.), scratched, or
substandard in quality.
, Replace the disc and repeat the
recording procedure.
C13/Read Error
, Take out the MD and insert it again.
C14/Toc Error
, Insert another disc.
, If possible, erase all the tracks on the
, If possible, erase all the tracks on the
MD .
C41/Cannot Copy
The sound source is a copy of
commercially available music software, or
you tried to record a CD-R (Recordable
CD).
, The Serial Copy Management System
commercially available music software, or
you tried to record a CD-R (Recordable
CD).
, The Serial Copy Management System
prevents making a digital copy .
You cannot record a CD-R.
C71/Din Unlock
The sporadic appearance of this message
is caused by the digital signal being
recorded. This will not affect the
recording.
is caused by the digital signal being
recorded. This will not affect the
recording.
While recording from a digital component
connected through the DIGITAL IN
connector, the digital connecting cable
was unplugged or the digital component
turned off.
, Connect the cable or turn the digital
connected through the DIGITAL IN
connector, the digital connecting cable
was unplugged or the digital component
turned off.
, Connect the cable or turn the digital
component back on.
E0001/
MEMORY NG
MEMORY NG
There is an error in the internal data that
the deck needs in order to operate.
, Consult your nearest Sony dealer.
the deck needs in order to operate.
, Consult your nearest Sony dealer.
E010
E0201
LOADING NG
LOADING NG
1/
LASER NG
There is a problem with the optical
pickup.
, The optical pick-up may have failed.
pickup.
, The optical pick-up may have failed.
Consult your nearest Sony dealer.
Three- or five-
digit code/
Message
digit code/
Message
Cause/Remedy
There is a problem with the loading.
,The loading may have failed. Consult
your nearest Sony dealer.
,The loading may have failed. Consult
your nearest Sony dealer.
Procedure for using the Self-Diagnosis Function (Error History Display Mode).
Note: Perform the self-diagnosis function in the “error history display mode” in the test mode. The following describes the least required
Note: Perform the self-diagnosis function in the “error history display mode” in the test mode. The following describes the least required
procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, press the MENU/NO button to exit
the mode.
the mode.
ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type
anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
CAUTION
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.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instructions.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.
Använd samma batterityp eller en likvärdig typ som
rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande föreskrifter.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
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