Сервисный мануал источника звука Sony SCT-ID10

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SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
OR DOTTED LINE WITH
ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SONY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR INSUPPLEMENTS PUBLISHED BY SONY.
TABLE OF CONTENTS
Specifications ........................................................................... 1
Location and Function of Controls .................................... 3
2. DISASSEMBLY
2-1. Key Board, Cabinet (Upper) Assy Removal .............. 72-2. Main Board, Transformer Board, Transformer retainer Board, Battery Blind Board Removal ........... 72-3. Cabinet (Top) Removal .............................................. 8 Installation Power Cord .............................................. 8
3. DIAL POINTER INSTALLATION
............................ 9
4. TEST MODE
................................................................. 10
5. ELECTRICAL ADJUSTMENTS
............................ 11
6. DIAGRAMS
6-1. Explanation of IC Terminals ..................................... 126-2. Block Diagram .......................................................... 136-3. Printed Wiring Boards (Main Section) ..................... 156-4. Schematic Diagram (Main Section) ......................... 176-5. Printed Wiring Boards (Key Section) ....................... 196-6. Schematic Diagram (Key Section) ........................... 21
7. EXPLODED VIEWS
7-1. Base Unit Section ..................................................... 247-2. Handset Section ........................................................ 25
8. ELECTRICAL PARTS LIST
.................................... 26
SAFETY CHECK-OUT (US model)
After correcting the original service problem, perform thefollowing 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. Checkleakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground andfrom all exposed metal parts to any exposed metal part having areturn to chassis, must not exceed 0.5mA (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 theseinstruments.
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 0.75V,so analog meters must have an accurate low-voltage scale. TheSimpson 250 and Sanwa SH-63Trd are examples of a passiveVOM that is suitable. Nearly all battery operated digitalmultimeters that have a 2V AC range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
Notes on chip component replacement
· Never reuse a disconnected chip component.· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
ATTENTION AU COMPOSANT AYANT RAPPORT
? LA S?CURIT?!
LES COMPOSANTS IDENTIFI?S PAR UNE MARQUE
DIAGRAMMES SCH?MATIQUES ET LA LISTE DES PI?CES SONTCRITIQUES POUR LA S?CURIT? DE FONCTIONNEMENT. NEREMPLACER CES COMPOSANTS QUE PAR DES PI?CES SONYDONT LES NUM?ROS SONT DONN?S DANS CE MANUEL OUDANS LES SUPPL?MENTS PUBLI?S PAR SONY.
· HOW TO CHANGE THE CERAMIC FILTER
This model is used two ceramic filters of CF3 and CF1.You must use same type of color marked ceramic filters in orderto meet same specifications.Therefore, the ceramic filter must change two pieces together sinceit's supply two pieces in package as a spare parts.