Revox B780/B739 Microcomputer Controlled Synthesizer FM Tuner Preamplifier Service Instructions
by STUDER REVOXComprehensive service manual for the Revox B780/B739 microcomputer-controlled FM synthesizer tuner preamplifier. This workshop manual covers complete disassembly procedures, calibration and adjustment instructions, detailed function descriptions, full electronic schematics, component parts lists, and complete technical specifications. Trilingual documentation in German, English, and French provides thorough guidance for technicians performing maintenance, troubleshooting, and repair work on this precision audio component. Includes all information necessary for qualified service personnel to diagnose faults, replace components, and restore the unit to factory specifications.
Table of Contents:
- General
- Index to the operating controls
- Tuner section
- Amplifier/preamplifier section
- Connector panel
- Connector panel B780
- Connector panel B739
- Socket layouts
- Disassembly
- Removing the top cover plate
- Removing the bottom cover plate
- Removing the side covers
- Removing the heat sink incl. power stage PCB (B780 only)
- Removing the rear cover (B739)
- Removing the terminal board cover (B739)
- Removing the operating panel
- Removing the front panel
- Replacing the illumination lamp of signal strength meter
- Replacing the signal strength meter
- Replacing the power switch
- Replacing the power line fuse
- Replacing the power supply fuse
- Description of Functions
- Tuner section
- Balance-to-unbalance transformer (Balun)
- RF-Input section 1.166.100
- IF amplifier 1.166.120
- FM demodulator 1.166.130
- Stereo decoder 1.166.150
- Frequency synthesizer and local oscillator
- Logic section
- Microcomputer PCB 1.780.260
- Audio section
- Meter circuit and de-emphasis PCB 1.780.155
- Audio connection unit 1.780.145
- Preamplifier 1.780.205
- Tone control PCB 1.780.210
- Power amplifier PCB 1.780.105
- Dolby processor PCB 1.166.400
- Power supply 1.780.110
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 118
- Size
- 95.0 MB
- Category
- Audio & HiFi