Sony SA-VE502, VE505, WMS5, SS-MS5 Service Manual

WMS5/SS-MS5
SERVICE MANUAL
The SA-VE502 system consists of one unit of SA-WMS5 and two units of SS-MS5. The SA-VE505 system consists of one unit of SA-WMS5 and five units of SS-MS5.
Photo: SA-WMS5 Photo: SS-MS5
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
E Model
MICROFILM
MICRO SATELLITE SYSTEM
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow­ing 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 WT -540A. Follo w the manufacturers’ 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 “limit” indica­tion is 0.75 V, so analog meters must have an accurate low­voltage 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 2 V A C range are suit­able. (See Fig. A)
To Exposed Metal Parts on Set
AC
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
Earth Ground
voltmeter (0.75 V)
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
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
– 2 –
SECTION 1
B
These are omitted.
CE
Q
d
T

GENERAL

SECTION 2

DIAGRAMS

• Location of Controls
SA-WMS5 – Front view –
– Rear view –
2-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
X : parts extracted from the component side.
b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Indication of transistor.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
• All resistors are in and 1/ specified.
2 : nonflammable resistor.
C : panel designation.
Note:
The components identi­fied by mark ! or dotted line with mark ! are criti­cal for safety. Replace only with part number specified.
U : B+ Line.
V : B– Line.
• Voltages are dc with respect to ground under no-signal conditions. no mark : AUDIO
• Voltages are taken with a V OM (input impedance 10 M). Voltage variations may be noted due to normal produc­tion tolerances.
• Signal path. F : AUDIO
• Abbreviation CND : Canadian
4
W or less unless otherwise
Note:
Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.
LINE IN/OUT jack
• Circuit Boards Location
SPEAKER IN/OU terminal
POWER SAVE switch
– SA-WMS5 –
POWER board
POWER SWITCH board
LED board
MAIN boar
CONTROL board
AUTO POWER board
– 3 – – 4 –
SA-VE502/VE505/WMS5/SS-MS5
2-2. PRINTED WIRING BOARDS • See page 4 for Circuit Boards Location.
(Page 6)
(Page 5)
(Page 8)
(Page 7)
(Page 7)
(Page 7)
– 5 –
– 6 –
• Semiconductor Location – MAIN Board –
Ref. No. Location
D101 B-9 D102 C-9 D103 B-10 D104 B-9 D105 C-9 D106 C-9 D107 D-10 D108 C-10 D303 B-7 D304 B-5 D501 D-4 D503 B-4 D504 A-4
IC101 C-10 IC102 D-10 IC301 A-9 IC302 C-8 IC303 A-6 IC501 A-5 IC502 A-5
(Page 6)
SA-VE502/VE505/WMS5/SS-MS5
(Page 5)
• Semiconductor Location – AUTO POWER Board –
Ref. No. Location
D601 B-2 D602 B-2 D603 B-3 D604 B-3 D605 B-2 D606 D-3
IC601 C-2 IC602 C-2
Q601 B-1 Q602 D-3 Q603 C-2 Q604 D-2 Q605 D-2
(Page 5)
(Page 5)
(Page 7)
(Page 8)
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