Teletype 28 Manual page 71

ISS 8, SECTION 573-115-700TC
2. 69 Spacing Mechanism (Cont.)
Q)
eo a
MARGIN
INDICATOR SWITCH LEVER
'< ;,
(TYPING UNIT)
(FRONT VIEW)
(BASE)
NOTE: FOR EARLIER DESIGN SEE PAR. 4.23
MARGIN INDICATOR SWITCH
MARGIN INDICATOR LAMP
REQUIREMENT
OPERATING UNDER POWER, THE LAMP SHOULD LIGHT ON THE DESIRED CHARACTER.
TO ADJUST
·sET THE TYPE BOX CARRIAGE TO PRINT THE DESIRED CHARACTER AND POSITION THE
CAM DISC COUNTERCLOCKWISE ON THE SPRING DRUM WITH ITS THREE MOUNTING
SCREWS LOOSENED SO THAT THE SWITCH JUST OPENS. IF A LINE SHORTER THAN
72 CHARACTERS IS REQUIRED, IT MAY BE NECESSARY TO REMOVE THE CAM DISC
SCREWS AND INSERT THEM IN ADJACENT SLOTS IN THE DISC IF THE RANGE OF
ROTATION IN ONE SlOT IS NOT ENOUGH. TIGHTEN SCREWS.
Page 71