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Sansui AU-7700 - Service Manual

Sansui AU-7700
21 pages
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SERVICE
MUAL
STEREO
AMPLIFIER
$ll$ul
[u-7700
*
SANSTJI
E.LE,CTRIC
CO.,
LTD.

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Summary

SPECIFICATIONS

Power Output and Load Specifications

Details rated and continuous RMS power output, load impedance, and frequency response.

Distortion and Noise Levels

Covers total harmonic distortion, intermodulation distortion, and hum/noise performance.

Input Sensitivity and Controls

Outlines required input levels for various sources and tone control ranges.

Physical and Power Requirements

Includes unit dimensions, weight, power supply voltage, and consumption.

BLOCK DIAGRAM AND VALUE OF EACH LEVEL

ADJUSTMENT PROCEDURES

Driver Circuit Board Adjustment

Step-by-step guide for adjusting the driver circuit board, including bias current settings.

TROUBLESHOOTING CHART

Power Supply Section Troubleshooting

Identifies common power supply issues and their causes, like no power or incorrect voltages.

Audio Section Troubleshooting

Addresses audio-specific problems such as inoperative relays, bias current, or center voltage issues.

TUNER AND AUX INPUT TROUBLESHOOTING

Both Channels Inoperative (Tuner;AUX)

Diagnoses issues where both tuner or AUX channels fail to produce sound.

One Channel Inoperative (Tuner;AUX)

Guides troubleshooting for a single channel failing on tuner or AUX inputs.

PHONO INPUT TROUBLESHOOTING

Both Channels Inoperative (Phono)

Covers scenarios where the phono input yields no sound from either channel.

One Channel Inoperative (Phono)

Details how to troubleshoot a phono input with only one channel producing sound.

PARTS LOCATIONS AND LISTS

F-2092 Equalizer & Power Supply Board

Component layout and parts list for the F-2092 circuit board.

F-2094 Accessory Switch Circuit Board

Component layout and parts list for the F-2094 accessory switch circuit board.

Other Parts (Top Side)

Lists and locations for miscellaneous parts found on the top of the unit.

POWER TRANSISTOR REPLACEMENT

PACKING AND ACCESSORY LISTS

Packing List Details

Lists materials included for packaging the unit.

Accessory Parts List

Lists included accessories such as pin plug covers and instruction sheets.

SCHEMATIC DIAGRAM

Sansui AU-7700 Specifications

General IconGeneral
BrandSansui
ModelAU-7700
CategoryAmplifier
LanguageEnglish

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