Pioneer SX-3900 Manuals

Manuals and User Guides for Pioneer SX-3900. We have 1 Pioneer SX-3900 manual available for free PDF download: Service Manual

Pioneer SX-3900 Service Manual

Pioneer SX-3900 Service Manual (48 pages)

Fm Quartz Locked

Brand: Pioneer | Category: Stereo Receiver | Size: 12.61 MB

Table of Contents

Table of Contents
2
Specifications
2
1 S P E C T F T C a T T O N S

3
- AM Tuner Section
  3
- Audio Section
  3
  - Front Panel Facilities
    4
  - Block Diagram
    7
  - Tuner Section
    7
  - Audio Section
    7
  - Circuit Descriptions
    8
  - FM Tuner Section
    8
  - Front End
    8
  - IF Amplifier and Detector
    8
  - AM Tuner Section
    9
  - Phono Equalizer Amplifier
    9
  - Limiting the Locking Range
    9
  - Multiplex Decoder
    9
  - Power Amplifier Section
    10
  - High Speed Bias Servocontrol Circuit
    10
  - Bias Circuitry of Non-Switching Amplifier
    10
  - Power Amplifier Circuit
    10
  - Display Circuit
    11
  - Power Indicator Circuit
    11
  - Frequency Display
    11
  - 7 Segment Digit Display
    11
- D I S P L a y C I R C U I T
  11
- P R O T E C T I O N C I R C U I T
  13
  - DC Voltage Detector
    14
  - Overload Detection
    14
  - Disassembly
    15
  - Wooden Cover
    15
  - Bottom Plate
    15
  - Front Panel
    15
500 D I S a S S E M B L y

15
- Parts Location
  16
  - Front Panel View
    16
  - Front View with Panel Removed
    16
  - Rear Panel View
    16
  - Top View
    17
  - Bottom View
    17
  - Dial Cord Stringing
    18
500 D I a L C O R D S T R I N G I N G

18
- A D J U S T M E N T S
  19
- Adjustments
  19
- Audio Section
  19
  - DC Balance
    19
  - Idle Current
    19
  - Output Power Indicator Calibration
    19
  - FM Tuner
    20
- T U N E R S E C T I O N
  20
  - Adjustment of the Tuning Coils
    21
  - Crystal Detector
    21
  - FM Tuner Adjustment
    21
  - Adjustment of Frequency Display
    22
  - Frequency Display Circuit
    22
  - AM Tuner
    23
  - AM Tuner Adjustment
    23
  - External Appearance of Transistors and Ics
    24
  - Schematic Diagram
    24
9 S C H E M a T I C D I a G R a M

24
- P.C. Board Connection Diagram
  26
- Miscellaneous Parts
  28
- Parts List
  28
- Exploded View
  34
- Exterior Components
  34
- Interior Components
  35
- Heat Sink
  37
- Packing
  38
- S P E C I F I C a T I O N S
  40
  - Contrast of Miscellaneous Parts
    41
  - De-Emphasis Assembly
    43
  - Fuse Holder Assembly
    43
  - Rectifier Assembly
    43

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