IBM Selectric I/O Manual Of Instruction page 8

FIGURE 3. Capacitor-Start Motor
The capacitor start three wire grounded system has in addi-
tion to the three wire line cord and jumper wire a grounded
capacitor mounting bracket. This is done by using metal
mounting screws (Fig. 4).
Green - Run
Motor
White
Green
Black
Plug Solderless Connector
FIGURE 4. Capacitor-Start Motor Diagram
The switch and switch lever are mounted on the right side of
the keyboard. The switch lever operates the electrical switch
by means of a short I ink extending to the rear. It is operated
by pressing down on the rear of the lever to turn the machine
ON and the front to turn the machine OFF. The switch lever
is labeled ON and OFF. When the switch lever is in the ON
position, a contrasting color at the front of the switch lever
shows just above the case. This calls attention to the fact that
the machine is ON to minimize chances of the machine being
left running when not in use.
In addition to operating the typewriter switch, the switch lever
also controls the keyboard lockout mechanism. This mechanism
is discussed in the keyboard section.
Motor Contactor (835 Printer)
Mounted underneath the printer near the shift feedback con-
tact bracket is the motor contactor (Fig. 4.1). The motor con-
tactor is a 48V relay that works in conjunction with the as-
sociated electronics.
If
the printer ON/OFF switch is in the
ON position and the Communicate-Local switch is in Commu-
nicate, the printer motor can be turned OFF and ON by the
motor contactor (Fig. 4.2).
Shield
Motor
Contactor
-lI....,r; •
...1~
Terminal
•
White
Green
Black
Plug
E
~
...
IIC
Z \
. .
".J ~
~
....
0
i
z 2
3
$
z
~
I
:;
~
§ ..
I
<
::i
FIGURE 4.1 Motor Contactor
To Power Supply
Grn Wht Blk
Motor
Contactor
•
FIGURE 4.2 Motor Diagram (835 Printer)
2
Shift
Contact
Actuating
Arm