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Pioneer TX-7800 Service Manual

Pioneer TX-7800
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AM/FM
STEREO
TUNER
TX-7800
SERVICE
MANUAL
)
PIONGER:
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Pioneer TX-7800 Specifications

General IconGeneral
Tuning TypeAnalog
Tuning BandsFM, MW
Signal to Noise Ratio (FM)70 dB
Signal to Noise Ratio (AM)50 dB
Output Level650 mV
Output (FM)650 mV
Output Voltage650 mV
FM Tuning Range88 - 108 MHz
AM Tuning Range530 to 1620 kHz
Sensitivity (FM dBf)10.8 dBf
Sensitivity (AM μV/m)30 μV/m
Total Harmonic Distortion (FM)0.3%
Total Harmonic Distortion (AM)0.5%
Distortion (FM)0.3%
Distortion (MW)0.5%
Frequency Response (FM)30 Hz - 15 kHz
MW Tuning Range530 - 1605 kHz

Summary

Schematic Diagrams

Power Supply Assembly Schematic

Schematic diagram detailing the power supply unit.

Printed Circuit Boards

Tuner Assembly (GWE-112) PC Board

Schematic diagram of the main tuner circuit board.

Power Supply Assembly (AWR-185) PC Board

Schematic diagram of the power supply unit's PC board.

Component Identification

External Appearance of Transistors and ICs

Visual identification and pinouts for transistors and ICs.

LED Assembly (GWX-245)

Diagram of the LED assembly.

VR Assembly (AWX-159)

Diagram of the VR assembly.

Switch Assembly (GWS-165)

Diagram of the switch assembly.

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