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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
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
Ë LA SƒCURITƒ!
LES COMPOSANTS IDENTIFƒS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT
CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY
DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU
DANS LES SUPPƒMENTS PUBLIƒS PAR SONY.
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, ÒmetallizedÓ knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
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 microamperes).
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 manufacturersÕ instructions to use these
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 ÒlimitÓ indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µF
1.5 k ½
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage. CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the equipment manufacturer.
Discard used batteries according to manufactureÕs instructions.
ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved fejlagtig hŒndtering.
Udskiftning mΠkun ske med batteri af samme fabrikat og type.
LevŽr det brugte batteri tilbage til leverand¿ren.
ADVARSEL
Eksplosjonsfare ved feilakting skifte av batteri.
Benytt samme batteritype eller en tilsvarende type anbefalt av
apparatfabrikanten.
Brukte batterier katterier kasseres i henhold til fabrikantens
VARNIG
Explosionsfara vid felaktigt batteribyte.
AnvŠnd samma batterityp eller en likvŠrdig typ som rekommenderas
av apparattillverkaren.
Kassera anvŠnt batteri enligt gŠllande fšreakrifter.
VAROITUS
Parist voi rŠjŠhtŠŠ, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
HŠvitŠ kŠytetty paristo valmistajan ohjeiden mukaisesti.
Output
Jack Rated Load
type output impedance
PHONES Stereo phone 28 mW 32 W
jacks
LINE(ANALOG) Phono 2 Vrms Over
OUT jacks (at 50 kW)10 kW
DIGITAL OUT Square Ð18 dBm Optical
OPTICAL optical Wave length
connector 660 nm
jack
DIGITAL OUT Phono 0.5 Vp-p 75 W
COAXIAL jack (at 75 W)
General
Power requirements
Where purchased Power requirements
Continnental Europe and UK 220V Ð 230V AC, 50/60 Hz
U.S.A. and Canada 120 V AC, 60 Hz
Power consumption 24 W
Dimensions (approx.)(w/h/d) incl. projecting parts and controls
430 ´ 125.5 ´ 375.5 mm
(17 ´ 5 ´ 13
3/4 in.)
Mass (approx.) 15.3 kg (33 lbs 11 oz)
Supplied accessories
¥ Audio connecting cords (2)
¥ Remote commander (remote) RM-D34M (1)
¥ R6 (size-AA) batteries (2)
Design and specifications are subject to change without notice.
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This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
The following caution label is located inside the unit.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
Notes on chip component replacement
¥ Never reuse a disconnected chip component.
¥ Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
¥ Keep the temperature of soldering iron around 270ûC
during 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.
MODEL IDENTIFICATION
Ñ BACK PANEL Ñ
Parts No.
4-220-300-1 : AEP, UK model
4-220-300-2 : US model
4-220-300-3 : Canadian model
TABLE OF CONTENTS
1. SERVICING NOTE
ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááá 6
2. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááá 12
3. DISASSEMBLY
3-1. Case ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááááááááááá 14
3-2. Loading Panel ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááá 14
3-3. Front Panel Assembly ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááá 15
3-4. MD Mechanism Deck ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááá 15
3-5. Tray Assembly ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááá 16
3-6. BU Holder Assembly ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááá 17
3-7. Motor (Loading) Assembly (M10) ááááááááááááááááááááááááááááááááááá 17
3-8. Base Unit (MBU-5C) ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááá 18
3-9. BD Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááááááááá 18
3-10. Over Light Head (HP901) áááááááááááááááááááááááááááááááááááááááááááááááá 19
3-11. Mini Disc Device (KMS-260B/JN) áááááááááááááááááááááááááááááááááá 19
4. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááááá 20
5. ELECTRICAL ADJUSTMENTS ááááááááááááááááááááááááááááááá 25
6. DIAGRAMS
6-1. Block Diagrams
BD Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááááááááááá 34
MAIN Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááááááááááááááá 35
Display/Power Supply Section ááááááááááááááááááááááááááááááááááááááááá 36
6-2. Circuit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\
37
6-3. Printed Wiring Board BD Section ááááááááááááááááááááááááááááááááá 38
6-4. Schematic Diagram BD (2/1) Section ááááááááááááááááááááááááááá 39
6-5. Schematic Diagram BD (2/1) Section ááááááááááááááááááááááááááá 40
6-6. Schematic Diagram BD Switch Section áááááááááááááááááááááááá 41
6-7. Printed Wiring Board BD Switch Section ááááááááááááááááááááá 41
6-8. Printed Wiring Board AD Section ááááááááááááááááááááááááááááááááá 42
6-9. Schematic Diagram AD (2/1) Section ááááááááááááááááááááááááááá 43
6-10. Schematic Diagram AD (2/1) Section ááááááááááááááááááááááááááá 44
6-11. Schematic Diagram DA (2/1) Section ááááááááááááááááááááááááááá 45
6-12. Printed Wiring Board DA Section ááááááááááááááááááááááááááááááááá 48
6-13. Schematic Diagram DA (2/1) Section ááááááááááááááááááááááááááá 47
6-14. Printed Wiring Board Digital Section ááááááááááááááááááááááááááá 48
6-15. Schematic Diagram Digital Section ááááááááááááááááááááááááááááá 50
6-16. Printed Wiring Board AC Section ááááááááááááááááááááááááááááááááá 51
6-17. Schematic Diagram Power Section áááááááááááááááááááááááááááááá 52
6-18. Printed Wiring Board Power Section áááááááááááááááááááááááááááá 53
6-19. Printed Wiring Board Panel Section áááááááááááááááááááááááááááááá 54
6-20. Schematic Diagram Panel Section áááááááááááááááááááááááááááááááá 55
6-21. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááá 57
6-22. IC Pin Functions ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááááá 62
7. EXPLODED VIEWS
7-1. Upper Case Assembly ááááááááááááááááááááááááááááááááááááááááááááááááááá\
ááá 71
7-2. Front Panel Assembly ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááá 72
7-3. Chassis Assembly ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááááááááá 73
7-4. Mechanism Deck Assembly-1 (MDM-6A) áááááááááááááááááááááá 74
7-5. Mechanism Deck Assembly-2 (MDM-6A) áááááááááááááááááááááá 75
7-6. Base Unit (MBU-5C) ááááááááááááááááááááááááááááááááááááááááááááááááááá\
áááá 76
8. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááááááá 77
