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Sony STR-7055 Manuals
Manuals and User Guides for Sony STR-7055. We have
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Sony STR-7055 manual available for free PDF download: Service Manual
Sony STR-7055 Service Manual (41 pages)
Brand:
Sony
| Category:
Stereo Receiver
| Size: 12.47 MB
Table of Contents
FM Stereo/Fm-AM Receiver
1
Specifications
1
Table of Contents
2
Servicing Notes
3
Cautions on Handling IC's
3
Nylon Rivet Removal
3
IC Installation
3
Technical Description
4
Specifications
4
Circuit Description Digest
5
Signal-To-Noise Ratio
5
Input Sensitivity and Impedance
5
Output Level and Impedande
5
Audio Muting Circuit
6
Speaker Protection Circuit
6
Level Diagram
7
When Q705 Is Excessively Forward Biased
7
When Q705 Is Forced to Cutoff
7
Block Diagram
8
Disassembly and Replacement
9
Bottom Plate Removal
9
Front Panel Removal
9
Dial-Cord Restringing
9
Power Transistor Replacement
10
Details of Dial Cord Finish
10
Dial Pointer Installation
10
Dial Glass Removal
11
Meter Replacement
11
Volume Control Replacement
11
Control, Jack and Switch Replacement
12
Power Switch, Headphone, AUX Jacks
12
Speaker, Filter, Mode and Function Switches
12
Loudness, Muting Switches and Tone Controls
12
Chassis Layout
13
Alignment and Adjustment
14
FM I-F Strip Alignment
14
Fm I-F Ceramic Filter
14
Interruption of Afc Circuit
14
FM Discriminator Alignment
15
Discriminator Alignment Test Setup
15
Fm I-F, Discriminator, Muting and Front-End Alignment Test Setup
15
FM Frequency Coverage Alignment
16
FM Stereo Separation Adjustment
16
Signal Generator Method
16
Off-The-Air Signal Method
16
Muting Adjustment
17
Fm Stereo Separation Adjustment Test Setup
17
A-M Frequency Coverage and Tracking Alignment
18
A-M Frequency Coverage and Tracking Alignment Test Setup
18
Tuning Meter Calibration
19
Tuning Meter Calibration Test Setup
19
Adjustment Parts Location
20
A-M Front End/I-F Amplifier/Mpx Board Component Side
20
Power Amplifier Adjustment
21
DC Bias Adjustment
21
Power Amplifier Adjustment Test Setup
21
Repacking
22
Diagrams
23
Mounting Diagram - REC/PB Connector Board Conductor Side
23
Mounting Diagram - Loudness Control Board Conductor Side
23
Mounting Diagram - Fm Front End (FAF-022BWG) Conductor Side
23
Mounting Diagram - A-M Front End/I-F Amplifier/Mpx Board Conductor Side
24
Parts Location
24
Schematic Diagram - Tuner Section
25
IC Block Diagram
25
Detailed IC (CX-0412) Diagram
25
Detailed IC (CX-0431) Diagram
25
Schematic Diagram - Audio Amplifier Section
26
Detailed IC (CX-0461) Diagram
26
Mounting Diagram - Control Board (CCB-116) Conudctor Side
27
Mounting Diagram - Power Amplifier/Power Supply Board - Conudctor Side
28
Exploded Views
29
Hardware Nomenclature
29
Schematic Diagram
30
Electrical Parts List
34
Complete Circuit Boards
34
Semiconductors
34
Transformers, Coils and Inductois
34
Capacitors
35
Resistors
36
Switches
39
Filter
39
Miscellaneous
39
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