Bell System Practices Plant Series Adjustments page 71

2. 69
Spacing Mechanism (Cont.)
MARGIN
INDICATOR SWITCH LEVER
( BASE
MARGIN INDICATOR SWITCH
MARGIN INDICATOR LAMP
REQUIREMENT
OPERATING UNDER POWER1 THE LAMP S HOULD LIGHT ON THE DESIRED CHARACTER.
TO ADJUST
SET THE TYPE BOX CARRIAGE TO PRINT THE DESIRED CHARACTER AND POSITION THE
CAM DISK COUNTERCLOCKWISE ON THE SPRING DRUM WITH ITS THREE MOUNTING
SCREWS LOOSENED SO THAT THE SWITCH JUST OPENS. IF A LIN E SH ORTER THAN
72 CHARACTERS IS REQUIRED, IT M AY BE N ECESSARY TO REMOVE THE CAM DISK
SCREWS AND INSERT THEM IN ADJ ACENT SLOTS IN THE DISK, IF THE RANGE OF
ROTATION IN ONE SLOT IS NOT ENOUGH.
MARGIN INDICATOR SPRING
)
ISS 7, SECTION
( TYPING UNIT )
NOTE: FOR EA RLI ER DESIGN SEE PA R. 4.23
573-115-700
Page
71