writer connecting cords from the
t e l e t y p e w r i t e r patch panel (fig. 20).
TT-4(*]/TG
(3) R e m o v e t h e w i n g n u t s b e n e a t h t h e
a. R e m o v a l .
tabletop. Remove the TT-76(*)/
O p e r a t e the MOTOR switch on the
GGC from its position.
TT-4(*)/TG
to
OFF.
b . R e p l a c e m e n t . Replace the unit by fol-
D i s c o n n e c t the power cord connector
l o w i n g the appropriate procedures in para-
p l u g from the TT-4A/TG receptacle
graph 14.
n e c t i n g cords from the teletypewriter
patch panel.
TH-5/TG
Remove the web strap across the
TT-4(*)/TG.
Remove
the
wingnut
a. Removal.
beneath the tabletop or mounting
(1) Operate the associated ON-OFF
s h e l f and remove the holddown bars.
s w i t c h on the TH-5/TG subdistribu-
Lift the TT-4(*)/TG from its posi-
tion panel (fig. 12 and 21) to OFF.
tion.
( 2 ) Disconnect the power cord connector
b . R e p l a c e m e n t . Replace the unit by fol-
from the TH-5/TG subdistribution
lowing the appropriate procedure in para-
p a n e l receptacle. Remove any patch
graph 15.
cords connected to the SEND and
R E C jacks.
( 3 ) Tag and remove the wires connected
TT-76(*)/GGC
t o the 2W binding posts.
a. Removal.
( 4 ) Lift up the rack designation plate.
Operate the MOTOR and POWER
P u l l the chassis forward and lift it
switches
on
the
TT-76(*)/GGC
to
f r o m its rack mounting.
OFF.
b. Replacement. Replace the unit by follow-
D i s c o n n e c t the power cord connector
i n g the appropriate procedures in paragraph
p l u g from the TT-76/GGC receptacle
Section II. ORGANIZATIONAL, FIELD, AND DEPOT MAINTENANCE
Procedures
a. Procedures for localizing troubles within
I s o l a t e defective components, parts, or wir-
t h e AN/MSC-32 are given in the equipment
ing of the S-184/MSC-32 by making appro-
p e r f o r m a n c e checklist (para 35).
p r i a t e voltage, resistance, or continuity tests
b. P r o c e d u r e s f o r t r o u b l e s h o o t i n g c o m p o -
w i t h Multimeter AN/URM-105. Refer to fig-
nents, parts, and wiring of the S-184 /MSC-32
u r e 41 when isolating trouble in the power
c i r c u i t s and to figure 42 for signal circuits.
a r e given in paragraph 47.
R e p a i r or replace components, parts, or wir-
c. Procedures for troubleshooting the major
ing. Use the chart below for references to re-
c o m p o n e n t s of the AN/MSC-32 are given in
p a i r procedures.
the applicable technical manuals (appx I). Re-
Warning: Be extremely careful when per-
f e r to paragraphs 36 through 45 for removal
forming the troubleshooting procedures; dan-
gerous voltages are present in the equipment.
a n d replacement of components.
