Pioneer SPEC-4 Manuals

Pioneer SPEC-4 Manuals

Manuals and User Guides for Pioneer SPEC-4. We have 2 Pioneer SPEC-4 manuals available for free PDF download: Service Manual

Pioneer SPEC-4 Service Manual

Pioneer SPEC-4 Service Manual (38 pages)

Stereo Power Amp

Brand: Pioneer | Category: Amplifier | Size: 4.85 MB

Table of Contents

Model Spec 4 Comes in Two Versions Distinguished as Follows
2
Contents
2
Specifications
3
Front Panel Facilities
4
Hexagonal Wrench
4
Connection Diagram
5
Block Diagram
6
Circuit Description
7
Meter Amplifier
7
Power Amplifier Circuit
7
Protection Circuit
8
Relay Driver Circuit
8
Meter Amplifier Circuit
8
Frequency Response of the Peak Meter
8
Muting Operation
9
Operation by Detector Circuit Command
9
Overload Detector Circuit
9
Center Point Potential Detector Circuit
9
Center Point Potential Detector
10
Power Supply Circuit
10
Surge Current Countermeasures
10
Disassembly
11
Top Cover
11
Front Panel
11
Bottom Plate
11
Parts Location
12
Front Panel View
12
Front View with Panel Removed
12
Top View
13
Bottom View
14
Rear Panel View
14
Adjustments
15
Power Amplifier
15
DC Balance/Idle Current/Power Limiter Adjustment
15
Connection Diagram for Power Limiter Adjustment
15
The Position of VR1 and VR2
16
Connection Diagram for Meter Amplifier Adjustment
16
Exploded Views
17
Nomenclature of Screws, Washers and Nuts
17
External Part
18
Internal Part
19
Panel Stay Block
19
Center Chassis Block
20
Rear Panel Block
21
Power Amplifier Block
21
Schematic Diagrams, P. C. Board Patterns and Parts List
22
Schematic Diagram and Miscellaneous Parts
22
Schematic Diagram
23
External Appearance of Transistors and IC
23
Meter Amplifier Assembly
24
Parts List of Meter Amplifier Assembly (AWM-113)
26
Resistors
26
Capacitors
26
Semiconductors
27
List of Changed Parts for Factory Modification
28
Power Amplifier Assembly (AWH-065)
29
Parts List of Power Amplifier Assembly (AWH-065)
31
Resistors and Potentiometers
31
Fuse Assembly (AWR-143)
33
Parts List of Fuse Assembly (AWR-143)
34
Power Supply Assembly (AWR-139)
35
Parts List of Power Supply Assembly (AWR-139)
35
Foil Side (AWR-140)
36
Packing
37

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Pioneer SPEC-4 Service Manual

Pioneer SPEC-4 Service Manual (37 pages)

STEREO POWER AMPLIFIER

Brand: Pioneer | Category: Amplifier | Size: 9.95 MB

Table of Contents

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