PS Magazine - TB 43-PS-437
PS, The Preventative Maintenance Monthly
ISSUE 437
APRIL 1989
MLRS
Troubleshooting .
..
ot an operator error prompt when
you're usiNg traiNiNg lauNch pod/con-
tainers? Here's a caution to remember
if the Prompt is "umBilical cable not
properly connected:±
TroubLeshooting with the infO on
²age 2³86 of TM 9´1425´646´µ0 and
²age 2¶4µ of TM 9´µ425´646´20 can
cost you time and moNey aND stIll Not
soLve the probLem.
The ·¸0 TM teLls you to rePlace t¹e
fºre control uN»t ($42,000 +) and the
umbilicaL cabLe adapter ($240 +) if you
can't corRect the error prompt.
¼ut, correcting the prompt may be
as simple as moving the rocket pod
identity switch on t½e fAuLt inseRtion
paNel in rocket tube 4 to t¹e ¾¿ÀMÁÂ
Position. Ãf the switch is open, the idenÄ
tification signal is interrupted and the
6
firE control system senses an improper
umbilical cabLe coNNection.
You won't know to Look fÅr this unÄ
less you aLso use TM 9´6920´646´µ4
Fr the M¸7 training Launch pod/conÄ
tainer. That TM ¹as t¹e operation aNd
troubLeshooting infO Fr the fAult inseÆÄ
tion Panel.
T¹e paNel is used aLmost aLL the time
to simuLate maLÇunctions during train-
ing exercises. Ãf the switches areN't reÈ
tUÉed to ¾¿ÀMÁ afterward, t¹en
you 'ÊÊ get error promPts until they are.
APr 89
SWITCH
Roket4Fuze
RokE 4 S±a±us
Roket 4 Misfire
WadlL±
ROcke±
2
Mis²ire
Table 2-1. Fault Inse±ion panel Cont²ols and ³ndications
P³Sm³N
FCP FAULT INDICA´I³N
NOµal
nO¶
Dud
Dw·ll ap¸¹r²Or ºe± NO. 4 »¼ ½l¾±¿ LP/CÀ Á skip Op±iO¼ w¹s ½l¾ted ÃuÄi¼g sys±ÅÆ s±aÇ
up,
t
rOcketw·ll b ÈÉÊpË ¹¼d
T
¼ex± rOcke± w·lÊ b Ìl¾t¿ ±O b ²ir¿Í ÁÂÎÊre Op±iO¼ waÏ
½lб¿Ñ ±he rOcke± wiÊÊ b ²ir¿ Bu± ¼O± cOu¼±¿ ¹s O¼e ±O b ²· red O¼ ¹ ±¹rge±Ò
nOµal
NO¼e
³¸¼
Óla¼k sp¹ce u¼Ãer rOcke± nOÔ 4 Õ¼ ½ÊÐt¿ LP/CÍ
H¹¼gfÊre
H w·ll ¹Ö¸¹r ²Or r×cke± NOØ 4 Õ¼ sÙʾtÚ LP/CÔ ÛܱOp Op±iO¼ was Ý¿ Ãu ri¼g sys±Þ s±aÇ
upÑ ±he ²iri¼g ßue¼à wiÊl s±×p a¼d HANGáRâ-SAFâ AND ARM T³ C³ãNäâ wiÊl ¹p¸¹r
O¼ li¼e
7.
Á cå¼±i¼ue Op±iO¼ was Ý¿æ ±he sYs±eÆ wÊlÊ açeÆp± ±Oèé±he rOcket agai¼ê a¼d
²
èri¼g ëue¼ce wiÊÊ cO¼1ì¼ue u¼±il ±í rîuiï ¼uÆbr O² ºe±s ·Ï ²· r¿.
NOrƹl
NO¼e
MiÜ ð rÅ
M wiÊÊ ¹p¸ar ²Or roke± NOñ 4 ò¼ ½Ê¾t¿ LPóCô õ s±Op Op±iO¼ öʾ±¿ duri¼g sYs±eÆ s±aÇ up÷
±he ²iri¼g ßue¼àwÊll s±Op a¼d MøSáRâ-SAFâ AND ARM T³ C³NTINUâ will apùr O¼ li¶
7³
õcO¼±Ê¼uúOÖtÊO¼waû üʾt¿Ñ ±he ÏyܱeÆ wilÊ ¹çÞp± ±O ²ire ±he roke± ag¹i¼ a¼d ±hż ±he
f
ri¼g ßueýcþ wilÊ cO¼±i¼uÙ u¼ÿ ±he Āuir¿ ¼uÆbr O² rOck e±Ï ÊÏ ār¿Ă
´µ
¶·
'¸¹-
.±
-
´,µ
º»¼½w¾CNP¿ÀÁOÂÃÄÅÆÆÇ1ÈÉMÊÊ
Ë
Sm ÌÍ
R³CKâT 4 MISáRâ excep±
I
w·lÊ ¹pùrăOrºe± NOĄ
2
ò¼ Ý¿ LP/C.
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