Read Sony MDS-DRE1 Service Manual online
MICROFILM
SERVICE MANUAL
MINIDISC RECORDER/PLAYER
US Model
Canadian Model
AEP Model
UK Model
SPECIFICATIONS
MDS-DRE1
U.S. and foreign patents licensed form Dolby Laboratories
Licensing Corporation.
Licensing Corporation.
Model Name Using Similar Mechanism
MDS-JA3ES
MD Mechanism Type
MDM-2CR
Base Unit Name
MBU-2B
Optical Pick-up Name
KMS-210A/J-N
– Continued on next page –
– 2 –
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
!
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
!
OR DOTTED
LINE WITH MARK
!
ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
7
3.
DISASSEMBLY
.........................................................
9
4.
TEST MODE
.............................................................. 12
5.
ELECTRICAL ADJUSTMENTS
......................... 15
6.
DIAGRAMS
6-1. Block Diagram – SERVO Section – .............................. 21
6-2. Block Diagram – MAIN Section (1/2) – ....................... 23
6-3. Block Diagram – MAIN Section (2/2) – ....................... 25
6-4. Block Diagram
6-2. Block Diagram – MAIN Section (1/2) – ....................... 23
6-3. Block Diagram – MAIN Section (2/2) – ....................... 25
6-4. Block Diagram
– DISPLAY/KEY/POWER SUPPLY Section – ............. 27
6-5. Notes for Printed Wiring Board
and Schematic Diagram .................................................. 30
6-6. Printed Wiring Board – BD Board (SIDE A) – ............. 31
6-7. Printed Wiring Board – BD Board (SIDE B) – ............. 33
6-8. Schematic Diagram – BD Section (1/2) – ..................... 35
6-9. Schematic Diagram – BD Section (2/2)– ...................... 37
6-10. Printed Wiring Boards
6-7. Printed Wiring Board – BD Board (SIDE B) – ............. 33
6-8. Schematic Diagram – BD Section (1/2) – ..................... 35
6-9. Schematic Diagram – BD Section (2/2)– ...................... 37
6-10. Printed Wiring Boards
– DETECTION SW Board, MOTOR Board – ............... 39
6-11. Schematic Diagram
– DETECTION SW/MOTOR Section – ........................ 41
6-12. Printed Wiring Board – DIGITAL Board (SIDE A) – ... 43
6-13. Printed Wiring Board – DIGITAL Board (SIDE B) – ... 45
6-14. Schematic Diagram – DIGITAL Section (1/4) – .......... 47
6-15. Schematic Diagram – DIGITAL Section (2/4) – .......... 49
6-16. Schematic Diagram – DIGITAL Section (3/4) – .......... 51
6-17. Schematic Diagram – DIGITAL Section (4/4) – .......... 53
6-18. Printed Wiring Board – PANEL Section (1) – .............. 56
6-19. Schematic Diagram – PANEL Section (1) – ................. 57
6-20. Printed Wiring Boards – PANEL Section (2) – ............. 59
6-21. Schematic Diagram – PANEL Section (2) – ................. 61
6-22. Printed Wiring Boards – POWER Section – ................. 63
6-23. Schematic Diagram – POWER Section – ..................... 65
6-24. IC Pin Function Description ........................................... 77
6-13. Printed Wiring Board – DIGITAL Board (SIDE B) – ... 45
6-14. Schematic Diagram – DIGITAL Section (1/4) – .......... 47
6-15. Schematic Diagram – DIGITAL Section (2/4) – .......... 49
6-16. Schematic Diagram – DIGITAL Section (3/4) – .......... 51
6-17. Schematic Diagram – DIGITAL Section (4/4) – .......... 53
6-18. Printed Wiring Board – PANEL Section (1) – .............. 56
6-19. Schematic Diagram – PANEL Section (1) – ................. 57
6-20. Printed Wiring Boards – PANEL Section (2) – ............. 59
6-21. Schematic Diagram – PANEL Section (2) – ................. 61
6-22. Printed Wiring Boards – POWER Section – ................. 63
6-23. Schematic Diagram – POWER Section – ..................... 65
6-24. IC Pin Function Description ........................................... 77
7.
EXPLODED VIEWS
................................................ 88
8.
ELECTRICAL PARTS LIST
............................... 93
– 3 –
SECTION 1
SERVICING NOTES
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
MODEL IDENTIFICATION
— LOWER SIDE CABINET (BOTTOM VIEW) —
Part No.
Front Side
4-210-100-1
π
: AEP and UK models
4-210-100-2
π
: US and
Canadian models
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.
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.
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 instruc-
tions.
Replace only with the same or equivalent type recommended by
the manufacturer.
Discard used batteries according to the manufacturer’s instruc-
tions.
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
– 4 –
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
exceeding the limit for Class 1.
The following caution label is located inside the unit.