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Section II PRELIMINARY INSTALLATION PROCEDURE
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TM-11-5815-206-12 Teletypewriter Sets AN/PGC-1 AND AN/PGC-3 and Teletypewriters TT-4A/TG TT-4B/TG TT-4C/TG TT-335/TG TT-537/G TT-698/TG Manual
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Motor Power and Protective Ground Connections
TM 11-5815-206-12/ TO 31W4-2PGC1-61
2-5. General
access window of the dust cover, release the figure
shift crank, and move the platen lock lever to the
a. Positioning
Teletypewriter.
Set the
right to release the platen. Close the access
teletypewriter on a table or any raised, flat surface
window.
high enough  for convenient operation of the
keyboard, preferable a surface that permits knee
space for the operator. If no suitable table or other
operating
surface
is  available,
set  the
teletypewriter on its case (fig. 1-1). When the
teletypewriter is transported to the installation site
by packboard (fig.  1-1) and the case is not
available, remove the immersionproof cover, lash
the teletypewriter to the packboard, and set the
packboard on any suitable supporting surface.
b. Installing Recording Paper and Inking
Ribbon. Install a roll of recording paper (para 3-5)
and a spool of inking ribbon (para 3-6).
c. Checking Fuses, See that a good 1/8-ampere
fuse is in the LINE FUSE holder, as shown in
figure 3-1. The MOTOR FUSE fuseholder of the
TT-4(*)/TG and TT-698(*)/TG requires a good
1.6-ampere fuse. The HTR FUSE fuseholder of the
TT-335/TG and TT-537/TG requires a good 3-
ampere fuse. See that a good spare line fuse and
motor fuse are installed in the spare-fuse clip on
the cover of the transmitter mechanism (fig. 1-9).
2-6. Unlocking Locking Devices
a. Blocking Plate. A blocking plate is provided
(on all models except TT-4A/TG and TT-698/TG)
to lock the carriage-return driving gear firmly in
place during shipment, Remove the two self-
locking hexagonal nuts, set the blocking plate to
the position shown in B, figure 2-2, and replace the
nuts.
b. Platen Lock (TT-4(*)/TG, TT-335/TG, and
TT-698(*)/TG (fig. 1-9). The platen lock is used to
lock the platen  during transportation of the
teletypewriter. To unfasten the platen lock, loosen
the wingnut at the right-hand end of the platen,
turn the locking lever counterclockwise until it
clears the movable parts of the platen assembly,
and tighten the wingnut.
c. Platen Lock ( TT-537/G) (fig. 2-3). The platen
Figure 2-2. Blocking plate arrangements
lock is used to lock the platen in the letters-shift
(all models except TT-4A/TG and TT-698/TG).
during
position
transporation of
the
teletyprewriter.  To unlatch the platen, open the
2-4

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