Table Of Contents - Sony CFM-A50 Service Manual

TABLE OF CONTENTS

Specifications ........................................................................... 1
1. GENERAL
Location and Function of Controls .................................... 3
2. DISASSEMBLY
2-1. Cabinet (Rear) Removal ............................................. 4
2-2. ISS SW Board, Battery Case,
BATTERY Board, POWER Board Removal ............. 4
2-3. Main Board, TUN LED Board,
TACT SW Board Removal ........................................ 5
2-4. H/P JACK Board, Door Ear (PH),
Box Ear (PH) Removal ............................................... 5
2-5. Mechanism Deck, DECK CONTROL Board
Volume Board Removal .............................................. 6
3. DIAL POINTER SETTING
4. ADJUSTMENTS
4-1. Mechanical Adjustment .............................................. 8
4-2. Electrical Adjustment ................................................. 8
5. DIAGRAMS
5-1. Schematic Diagram (AEP,UK Model) ...................... 12
5-2. Printed Wiring Boards (AEP,UK Model) ................. 15
5-3. Printed Wiring Boards (US Model) .......................... 19
5-4. Schematic Diagram (US Model) .............................. 23
6. EXPLODED VIEWS
6-1. Cabinet (Rear) Section .............................................. 28
6-2. Cabinet (Front) Section ............................................ 29
6-3. Mechanism Deck Section-1 (MF-A50-117) ............. 30
6-4. Mechanism Deck Section-2 (MF-A50-117) ............. 31
7. ELECTRICAL PARTS LIST
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HOW TO CHANGED THE CERAMIC FILTERS
This model is used three ceramic filters of CF2, CF4 and CF3.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must changed three pieces together
since it's supply three pieces in one package as a spare parts.
mark
mark
CF2, 4
CF3
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.
- 2 -
Center
Mark
fequency
red 10.70MHz
blue 10.67MHz
orange 10.73MHz
black 10.64MHz
white 10.76MHz