Sony str 6050 rec service manual

Page 2

TABLE OF CONTENTS
Page

SECTION 1 CIRCUIT DESCRIPTION
General Information ................................................................................. 1
Technical Specifications ..............................
Circuit Description
BLOCK DIAGRAM ......
LEVEL DIAGRAM ..................................................................
SECTION 2 DISASSEMBLY AND REPLACEMENT OF PARTS
2-1 Removal of Top Cover and Bottom Plate .
2-2 Front Panel Removal ....................
2-3 Removal of Front Panel Assembly ..
2-4 Switch and Binaural Jack Replacement
25 Pilot Lamp Replacement .........................
2-6 Dial Glass Replacement
2-7 Power Transistor Replacement..
2-8 Dial Cord Stringing .....................
CHASSIS LAYOUT ....................................................................................... 16
SECTION 3 TEST AND ALIGNMENT
3-1 Front End Alignment .....................................
32 FM Discriminator Adjustment ..
3-3 A~M I-F Alignment ....................
3-4 A-M Tuner Frequency Coverage and Tracking Alignment ...... 20~21
SCHEMATIC DIAGRAM (Tuner Section) ................................................ 22~23
SECTION 4 OVERALL ADJUSTMENT AND TEST
4-1 Discriminator Transformer Adj.
42 FM Muting Operation Adj. ...........
4-3 FM Monaural Distortion Adj. ..
4-4 FM Stereo Distortion Adj. ..
4-5 Channel Separation Adj.
4-6 Dial Pointer Calibration
47 Power Amplifier Adj.
SCHEMATIC DIAGRAM (Audio Section)
Service Note ....................
MOUNTING DIAGRAM

......... 24

Front End Section .. 31~32
FM I-F Board ......... .. 33~34
A-M I-F Board .. 35~36
MPX and Equalizer Amplifier Board.. .. 37~38
Loudness Section ................................................................................. 39
Tone Control and Flat Amplifier Board ........ .. 40~41
Power Amplifier Board .......................... .1 42~43
Power Supply Board ................................... .. 44~45

EXPLODED VIEW ................................................ .. 46~48