Pioneer SX-1980 Manuals

Manuals and User Guides for Pioneer SX-1980. We have 1 Pioneer SX-1980 manual available for free PDF download: Service Manual

Pioneer SX-1980 Service Manual (123 pages)

AM/FM Stereo Receiver

Brand: Pioneer | Category: Stereo Receiver | Size: 20.78 MB

Model SX-1980 Comes in Five Versions Distinguished as Follows
2
Contents
2
Specifications
4
HEX Wrench
5
Connection Diagram
6
Front Panel Facilities
8
Block Diagram
11
Tuner Section
11
Power Supply Section
11
AF Amplifier Section
12
Level Diagram
13
Circuit Descriptions
14
FM Front End
14
IF Amplifier and Detector
14
Multiplex Decoder
14
Audio Output Circuit
15
APC Circuit
15
Sampling Hold Circuit
16
LPF and DC Amplifier
17
VCO and Equilizer Amplifier
17
Structure of APC Control Circuit
17
Beat Detector II
18
Touch Sensor
18
Outline of APC Control Circuit
18
LED Driver
19
APC Control Circuit Operation
19
Re-Lock Operation
20
AM Tuner Stage
20
AM Tuner Section
20
Preamplifier Section
21
Phono Circuits
21
Flat Amplifier
21
Tone Controls
22
Power Amplifier Section
22
Amplifier Circuitry
22
Filter Circuits
22
Power Limiter
23
Output Power Meters
23
Peak Hold Circuit
24
Protection Circuit
24
Surge Current Suppressor Circuit
25
Power Supply Circuit
25
DC Power Supply Circuit
25
Disassembly
26
Heat Sink
27
Parts Location
28
Front Panel View
28
Front View with Panel Removed
29
Top View
30
Bottom View
31
Rear Panel View
32
Dial Cord Stringing
33
Adjustments
34
FM Tuner
35
APC Adjustments
37
AM Tuner
38
Exploded View
39
Top Side (Front)
42
Top Side (Rear)
44
Bottom Side
46
Rear Panel Component
48
Schematic Diagrams, P.C. Board Patterns and Parts List
49
Miscellanea
49
Miscellaneaus Parts
50
Circuit Diagram of IC
51
FM Front End (AWB-030)
51
Schematic Diagram
52
Tuner Assembly
54
Parts List of Tuner Assembly (AWE-093)
58
Slide Switch Assembly (AWS-125)
61
Cartridge Load Assembly (GWS-130)
62
APC Assembly (AWX-124)
63
Foil Side
64
Parts List of APC Assembly (AWX-124)
65
List of Changed Parts for Factory Modification
66
EQ Amplifier Assembly (AWF-030)
67
Parts List of EQ Amplifier Assembly (AWF-030)
69
Function Selector Assembly (GWS-129)
71
Parts List of Function Selector Assembly (GWS-129)
74
APC Control/MIC Assembly (GWM-104)
75
Parts List of APC Control/MIC Assembly (GWM-104)
76
Tone Control Assembly (AWG-059)
77
Parts List of Tone Control Assembly (AWG-059)
79
Filter Assembly (AWM-119)
81
Parts List of Filter Assembly (AWM-119)
83
Rectifier L Assembly (GWR-106)
84
Power Amplifier L Assembly (GWH-109)
85
Parts List of Power Amplifier L Assembly (GWH-109)
87
Power Amplifier R Assembly (GWH-110)
89
Parts List of Power Amplifier R Assembly (GWH-110)
91
Meter Amplifier Assembly (AWM-122)
93
Parts List of Meter Amplifier Assembly (AWM-122)
95
Rectifier R Assembly (GWR-107)
96
Power Supply Assembly (AWR-154)
97
Parts List of Power Supply Assembly (AWR-154)
99
Packing
101
Contrast of Miscellaneous Parts
103
Supplements for HG Type
105
Exploded View of Rear Panel
105
Schematic Diagram (for HG)
106
Meter Amplifier Assembly (AWM-126)
108
Parts List of Meter Amplifier Assembly (AWM-126)
110
Power Supply Assembly (AWR-155)
111
Parts List of Power Supply Assembly (AWR-155)
113
Schematic Diagram (for S and S/G)
115
Supplements for S and S/G Type
117
5P Connector Assembly (AWX-062)
118
Supplements for Model SX-1980/KC
119

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Pioneer SX-1980 Service Manual (123 pages)

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