Ferrograph Series 6 Stereo Documentation

Ferrograph Series 6 Stereo Documentation

The Manual of the Ferrograph Series 6 - Models 632 & 634

The following pages are scanned from the user manual for the Ferrograph 632 and 634 stereo tape recorders. Thanks to Don Evans for donating the original scans.

Each page is approximately 45KB, except where stated otherwise.

• Front Cover
• Series 6 Stereo Photo
• Page 4, Contents
• Page 5, Contents, List of Diagrams and Plates
• Page 6, Important Notice
• Page 7, Foreword
• Page 8
• Page 9 General Specification
• Page 10, General Description
• Page 11, Connecting Up
• Page 12, To Load
• Page 13, To Run, To Play Back
• Page 14, To Rewind
• Page 15, To Record
• Page 16
• Page 17
• Page 18
• Page 19
• Page 20, Track Dispositions, Erase Link
• Page 21, Pause Control, Endless Loops
• Page 22
• Page 23
• Page 24, Care and Maintenance
• Page 25, Technical Section
• Page 26, Design Details
• Page 27, Fig 7 - General View
• Page 28, Fig 8 - Underside of Tape Deck
• Page 29
• Page 30
• Page 31
• Page 32
• Page 33, Fig 11 - Record Amplifier Chassis Top View
• Page 34, Fig 12 - Record Amplifier Chassis Underside View
• Page 35
• Page 36
• Page 37, Fig 13 - Playback Pre-Amplifiers Underside View
• Page 38, Fig 14 - Playback Pre-Amplifiers Top View
• Page 39, Testing and Alignment
• Page 40
• Page 41
• Page 42
• Page 43, Use as an Amplifier, Head Position 3
• Page 44
• Page 45
• Page 46
• Page 47
• Page 48, Ferrograph Models 632H and 634H
• Page 49, Fig 15 - Head and Track Alignment, Model 632
• Page 50, Fig 16 - Head and Track Alignment, Model 634
• Page 51, Appendix A - Operational Fault Analysis
• Page 52
• Page 53
• Page 54, Appendix B - Components List for Models 632U and 634U (240V, 50 c/s)
• Page 55
• Pages 56-57, Circuit Diagram (270KB)
• Page 58
• Page 59
• Page 60
• Page 61
• Page 62, Components List for Models 632A and 634A (117V, 60 c/s)
• Page 63, Components List for Models 632E and 634E (110V, 50 c/s) and Models 632H and 634H (U, E or A)
• Page 64, Appendix C - Accessories
• Page 65
• Page 66, Copyright Notice
• Page 67, Notes
• Page 68

OSU1 Power Amplifier Module, Circuit Diagram

Colin Arrowsmith has traced out the circuit diagram for the 'OSU1' power amplifier module used in the Series 632 and 634 tape recorders. This was a transistorised amplifier module, from 'Newmarket Transistors'. The module uses germanium transistors which may now be difficult to obtain, so some modern alternatives are suggested, although they have not been tested.

• OSU1 Amplifier Module Circuit Diagram

Supplementary Notes (Serial No. 6/50,000 onwards)

• Front Cover
• Page 1, Bias Switch, Erase and Record Links
• Pages 2-3, Revised Circuit Diagram (270KB)
• Page 4, Superimposition and Interjection
• Page 5, Voltage Selector
• Page 6, Reel Motors, Parts List Changes

Abridged Operating Instructions for Ferrograph Models 632 and 634

The following pages are the abridged operating instructions supplied with stereo tape recorder models 632 and 634. These pages were scanned and donated by Robert Meldrum and Don Evans.

Each page is approximately 100KB.

• Front Cover
• Page 1
• Page 2
• Page 3
• Page 4