Nagra 4.2 Service Manual
by NAGRAService manual for the Nagra 4.2 portable tape recorder, an essential reference for technicians maintaining and repairing this professional-grade audio equipment. The documentation provides comprehensive technical specifications—dimensions, weight, and power supply requirements—alongside detailed mechanical assembly procedures and adjustment protocols. Coverage includes magnetic tape specifications, tape transport mechanics, amplifier chain configuration, modulometer operation, and recording and playback characteristics. Electronic calibration procedures are outlined with circuit location diagrams, full schematics, parts location diagrams, and complete component lists. Inputs, outputs, filter configurations, and operating conditions are thoroughly documented. Presented in bilingual English/French format, this workshop manual serves as the definitive repair and maintenance guide for Nagra 4.2 operators and service technicians.
Table of Contents:
- Tape/Direct, Line & Phones
- Tape/Direct, Meter
- Power
- Main function selector
- Pinch wheel position stop
- Mike 2
- Mike 1
- Ref. Gen.
- Line & Playback
- Manual/Automatic
- Lid catch
- Selector switch for meter 14
- Filter selector
- Measuring instrument
- Pilot
- Speed & Power
- Phones
- Phones Level
- Tape reel fixing nut
- Speed & Equalization
- Mobile guide
- Pinch wheel
- Fast wind switch
- Supply reel
- Tension roller of the supply reel
- Erase head
- Stabilizer roller with 50 or 60 Hz stroboscope
- Recording head
- Pilot head
- Playback head
- Capstan
- Three position lever controlling the pinch wheel and tape guides
- Tension roller of the take-up reel
- Take-up reel
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
- Size
- 27.2 MB
- Category
- Audio & HiFi