AEROGRAPHER'S MATE 3 & 2 



Figure 7-4. — Teletypewriter TT-69 



1.217.70 

 ( ) /UG. 



in a cut-down cabinet, the TT-69( )/UG is simi- 

 lar to the TT-48( )/UG. It serves the same 

 purpose and functions in the same manner. 

 Usually, the TT-69( )/UG is installed on small 

 ships where space is of prime consideration. 

 Both the TT-48( )/UG and the TT-69( )/UG 

 models can be installed without the keyboard 

 attached. 



TELETYPE SUPPORT AND 

 MAINTENANCE 



Teletype maintenance ashore is normally 

 carried out by telephone companies and Western 

 Union. The equipment is inspected and serviced 

 periodically. Aboard ships, however, the tele- 

 type repairs and maintenance are handled by 

 the ship's radiomen carrying the appropriate 

 NEC. 



Teletype support includes changing the paper, 

 ribbons, and tape as the need arises. The pro- 

 cedures to be followed for these jobs are dis- 

 cussed in the following paragraphs. 



Changing Paper 



To insert a new roll of paper in the machine, 

 first shut off the power. Press the cover release 

 pushbutton and lift the cover. Push back the 

 paper release lever, lift the paper fingers, 

 and pull the paper from the platen. 



Lift the used roll from the machine and re- 

 move the spindle from the core of the used 

 roll. Discard the used roll. Insert the spindle 

 in the new roll. Replace the spindle in the 

 spindle grooves with the paper feeding from 

 underneath the roll toward the operator. Feed 

 the paper over the paper- straightener rod, down 

 under the platen, and up between the platen 

 and paper fingers. Pull the paper up a few inches 

 beyond the top of the platen, and straighten it 

 as though straightening paper in a typewriter. 

 Then lower the paper fingers onto the paper 

 and pull the paper release lever forward. While 

 inserting paper, avoid disturbing the ribbon or 

 the type box latch. After the paper is in place, 

 check to see that the ribbon is still properly 

 threaded through the ribbon guides. Also check 

 to make certain that the type box latch has 

 not been disengaged. It should be in a posi- 

 tion holding the type box firmly in place. Close 

 the cover. Open the lid by pressing the lid 

 release pushbutton, bring up the end of the 

 paper, and close the lid with the paper feeding 

 out the top of it. 



Changing Ribbons 



To replace a worn ribbon on the typing unit, 

 press the cover release pushbutton and lift 

 the cover. Lift the ribbon spool locks to a 

 vertical position and remove both spools from 

 the ribbon spool shafts. Remove the ribbon 

 from the ribbon rollers, ribbon reverse levers, 

 and ribbon guides. Unwind and remove the old 

 ribbon from one of the spools. Hook the end 

 of the new ribbon to the hub of the empty spool 

 and wind until the reversing eyelet is on the 

 spool. If the ribbon has no hook at the end, 

 the spool will have a barb that should be used 

 to pierce the ribbon near its end. 



Replace the spools on the ribbon spool shafts , 

 making sure they settle on the spool shaft pins 

 and the ribbon feeds from the front of the spools. 

 Turn down the ribbon spool locks to a horizontal 

 position locking the spools in place. Thread 

 the ribbon forward around both ribbon rollers 

 and through the slots in the ribbon levers and 

 ribbon guides. Take up slack by turning the 

 empty spool. After the slack has been taken up, 

 check to make certain the ribbon is still properly 

 threaded through the ribbon guides, and that 

 the reversing eyelet is between the spool and 

 the reverse lever. 



126 



