TM 5-6675-316-14
(3) When the current in the motor coil is turned off, the collapsing magnetic
field around the coil induces voltage transients which could damage the Darlington
Q25.Diodes in the bridge CR1O bypass the spike directly to the -26 V supply and
indirectly to the +26 V supply via Q12 and zener diode CR14.
e.
Row shift.
(1) The font row shift stepping motor is bolted onto the character storage
unit frame. It is coupled to the camshaft by a simple clamp. To change the row of
type required, the whole font disc assembly is moved laterally across the optical
plane, placing the selected type row in front of the flash windows.
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