INTRODUCTION TO REVISED MANUAL
Welcome to the revised edition of the Hammond L–100 Series
Service Manual.
Started in late 2018, this edition updates the original manual for
the modern era. Changes include:
•
Schematics recreated in Illustrator allowing support for
interactive comparisons between models and a 17MB
reduction in file size
•
Spelling and typographic mistakes corrected
•
Hyper-links added to cross-references, table of contents,
figures, etc.
•
Images touched up
•
Most images added in-line with column text to aid on-screen
viewing
•
Page layout redesigned for a compromise between
landscape printing and on-screen reading
•
Font changed to sans serif (Helvetica Neue) for easier on-
screen readability
I–1 METHOD
The original service manual had been scanned by an unknown
source. This was then downloaded and OCR-ed.
OCR errors were either corrected or re-keyed. Then all text was
composited in Adobe InDesign. Images were captured, edited,
and enhanced in Adobe Photoshop.
I–2 REVISION HISTORY
The following revisions have been made:
Revision
Date
Comments
Original
ca. 1961
Original service manual written by
Hammond Organ Company
1.0
November, 2018 Initial update by Michael
Hightower
1.1
February, 2022
Added Kon Zissis’ modifications,
minor edits
To suggest corrections/improvements or to add content, please
contact Michael Hightower via
.
I–3 PRINTING INSTRUCTIONS
The main body of the document is typeset on 8.5” x 11” (US
Letter) in a landscape format. The schematics are typeset on 8.5”
x 14” (US Legal) in a landscape format.
Pages numbers and layout:
•
8.5” x 11 (US Letter) Landscape:
Cover page –
37
•
8.5” x 14 (US Legal) Landscape:
39 — 54
Summary of Contents for L-100 Series
Page 1: ......
Page 6: ......
Page 9: ...Page 9 Figure 1 4 Block Diagram L 100 Series Figure 1 5 Typical Tone Generator...
Page 38: ...Page 38 This page intentionally left blank...
Page 44: ...Page 44 Figure 5 7 Wiring Diagram L 100 Organ...
Page 45: ...Page 45 Figure 5 8 Wiring Diagram L100 1 and L 100 2 Organs...
Page 46: ...Page 46 Figure 5 9 Wiring Diagram L 200 Organ...
Page 49: ...Page 49 Figure 5 13 Parts Layout AO 41 Vibrato Amplifier...
Page 50: ...Page 50 Figure 5 14 Parts Layout AO 47 126 000023 Vibrato Amplifier...
Page 51: ...Page 51 Figure 5 14A Comparison Between AO 41 and AO 47 Vibrato Amplifiers...
Page 52: ...Page 52 Figure 5 15 Parts Layout AO 42 117 000019 Percussion Amplifier...
Page 53: ...Page 53 Figure 5 16 Parts Layout AO 43 126 000017 Power Amplifier...
Page 54: ...Page 54 Figure 5 17 Power Amplifier Fuse Location Canadian 101 000130...
