Selectric Resources
INTRODUCTION
The purpose of this manual is to describe the operational theory and a sequence of adjustments to help in servicing the “Selectric.” “Selectric” II, and Correcting “Selectric” typewriters. This manual covers Models 7X1, 7X3, 7X5, 8X3, 8X5, 9X3 (WT), and 9X5 (WT).
It is necessary for those who use this manual to be familiar with operator instructions. It is suggested that the Adjustment/Parts Manual (F/N 3241-5939) be used with this manual. Also, there are six special tools needed when using this manual and performing the adjustments and checks. These tools are: the Hooverometer, Platen Gauge, Rotate Selection Adjustment Tool, Hand Cycling Wheel, Volt-Ohm Meter and the Operational Cam Follower Roller Removal Tool. Use of the Hooverometer, Platen Gauge, Rotate Selection Adjustment Tool and Meter are easy to understand in the adjustments that require their use. The hand cycling wheel fits into the right end of the operational shaft and is used to operate the machine by hand to View an adjustment or the mechanism operation.
The Machine Introduction section of this manual includes the functions and applications of the machine and its features.
The Functional Check section is shown in a sequence so that important functions of the machine are checked for proper operation. However, this check does not necessarily follow the sequence of operational theory and adjustments within the manual. The functional check should be used to help locate problems on the machine.
The operation of the machine mechanisms is separated into two sections. The adjustment section will follow the theory of operation section.
In the Adjustment part of the section, each adjustment is in the sequence that the adjustments are to be made. When an adjustment is made, all adjustments that follow in that mechanism must be checked to ensure the adjustment did not affect an adjustment later in the sequence. The part to be adjusted and the direction the part must be adjusted are printed in red. When required, the View, the model of machine, level of design and mode or condition of the equipment is noted under the drawing. There may be times when adjustment sequences or tolerances differ from those in other related publications. However, the publication with the latest date should normally be considered the most current.
The Removals Procedures section is a numbered sequence of instructions for parts removal. The part can be assembled by reversing the removal steps.
If a detailed drawing of an assembly is required, the parts section of the Adjustment/Parts Manual should be used.
All drawings are front right views unless noted, or are easily understood by the reader.
When servicing the machine, all safety procedures must be followed. All guards and shields must be properly installed before the machine is ready for use.
WARNING
Keep hair, fingers and personal objects (such as bracelets, necklaces, neckties, etc.) out of the machine when the machine is on.
MACHINE INTRODUCTION
The IBM “Selectric” Typewriter is available with film or fabric ribbon and features an 88 character typing element. (96 character type elements are used with World Trade machines.) The typing element is easily removed to allow changing the typestyle.
An impression control allows the operator to change the impression of the typing element. An automatic velocity control changes the impression of the characters located in certain keyboard positions to a lighter impression. A storage mechanism reduces typing errors by storing the second of two quickly typed characters until the first is printed.
The paper mechanism remains in place and the element moves across the paper. The underscore, backspace,spacebar, index key and carrier return are typamatic keys.
The applications of the “Selectric” Typewriter include all types of standard typing, preparation of master copy for most types of duplicating, carbon copies, stencil writing and forms writing. The machine is also available with changes in the element, keyboard and cardholder for Optical Character Recognition applications. The IBM “Selectric” II Typewriter has all of the features of the “Selectric” Typewriter plus these additional features:
1. Dual Pitch — Allows the operator to select the typestyle and spacing to fit the application — whether it is standard typing, manifolding, OCR, speech writing, legal, file indexes, or other.
2. Selective Ribbon System — Allows the use of film ribbon or the IBM Tech III ribbon, both contained in cartridges for easier changes. The IBM Tech III ribbon gives a high quality image on a wide range of surfaces. It also offers a high character output which provides a longer lasting ribbon.
3. Express Backspace — Moves the carrier to the left quickly, under complete control of the operator, while remaining on the same writing line.
4. Half Backspace (Dual Pitch Only) — Allows typing half-way between two characters or spaces allowing the operator to insert a character.
The IBM Correcting “Selectric” Typewriter provides the operator with an effective way of correcting original copy from the keyboard. The correcting keybutton is on the right side of the keyboard. If an error is made, the keybutton is depressed and the incorrect character retyped. All actions necessary to position the carrier over the incorrect character, place the correcting tape in position and maintain the proper carrier position following the correction, are performed by one operation of the correcting keybutton.
The correcting mechanism operates with two types of correcting supplies. Both types use a correcting tape mounted on the carrier, next to the ribbon. If the operator selects the lift-off correcting tape, an IBM Correctable Film Ribbon must be used. If the IBM Tech III cover-up correcting tape is used, an IBM Tech III ribbon must be used. Both types of correcting tapes are color coded for identification and can be easily installed.
THE IBM 96 "SELECTRIC"TYPEWRITER(WT)
The purpose of a 96 character typewriter is to meet the requirements of customers that need more than 88 characters. Without such a machine, they must use typebar machines with changeable typebars, have Customer Engineers change some type slugs, or use an 88 character “Selectric” Typewriter and change the type element. For example, IBM has type elements available for typing Greek characters or mathematical symbols.
The IBM 96 “Selectric” Typewriter will reduce type element changes by the customer.
The requirement for more than 88 characters is especially strong in Germany and Japan. This is also true in some English-speaking nations which do business with non-English speaking countries.
Information in this manual which relates to World Trade machines only has been shaded for quick identification.
