AT&T System 85 Upgrade Manual page 77

SYSIEM
?56ENEAE
1
H/T
UPGRADES TO
O€fI{ITY
GEI€BP
2
5'7
R.noyhg
ttl',
RMSS
F.om o Sytam
75
Cali&t
A.
DiscorDccr RMSS
Fwcr
cablc
.s
follows:
t.
Rcrnovc
lhc
J3
(rcd s'irr) cdurccIa
tqn
olc
n$
of
drc
coonol
csri.t
st slor 22,
pins
31,
312, and 343. To
cnsurc yoo havc locstad lbe conact collnc€or,
lod(
for
a
!p
at
pin
y4
bctp..n $e
bl&t
witr .l|d
red
wir!
connoctoN J2
rnd
J3,
2.
Rcmova thc
J2
Ol&k virc)
coDncclor
from
$r
r€s
of
$c cotltol caricr
tt
slot
22,
pins
3,45,
346, atld
347.
3.
A!
lhe RMSS, discodr€cr
dp
Jl
corllEctor
frqn
dr cBHl
(P4)
codtrctor.
B,
Rcmovc lhe RMSS rittbon sigial
cable.
This cabl. tuns
bctwcq lh. RMss
arld
lhc AHF4
connaator at slol 07 of dlc
cdltrol agdcr
rc3i.
C.
Ph.r
l@6c RMSS
cablas
in
s sccu& localron.
D.
Rcmovc
rhc
RMSS rnounring
scrcws and
storc thcm
with
lh€ RMSS
aables.
E.
Slidr
our
RMSS unit
and
plac! it
in
e sacue location,
This
conplctcs
tlv
RMSS
rcnoyol proccdurc.
Rcnovi^8
tha
HCMR From
a
Systcm
75 Cabin
t
A.
Disconneca
fie oUF
crd of
the
HCMR
c
powcr
c!.d
from
drc connecting
block (slip
on
conncators) and complctely tdnovc
cord.
B.
Rcmovc the
fiont srd
rcar mouoting lcrEws
from
$c borcm of HCMR
moudng
brlcle-ts.
C.
Rcrnovc drc HCMR rnounting
br&Lls, locr&d
at lhc
rcar of lhc
cabilF!
This
co pktcs tlc
HCMR
rcnbwl procctlwc.
8.
Remove
nomcnclatlre IEncls fiom
aI
crriers.
9.
Rcmove power uni6
f6
caricr
lcvcls
A
and
B.
10.
Rernovc
all pon circuit pacl6
gd
csltlol pacls tlot
rcquir€d
for G2,
bascd
ol
your
alofi8ur4ion
documenl
Rcrhove 6csc
p6ck
from
all crrricr
lcvels.
Re$ove all
cxisdng
pofl circuit pacls from csder lcvcb A
and B.
Take
Fcctutions
against
strtic
damagc
to
citluit
pocks
whcn rrmoving
lnd
rcplaaing
lhcm' Slotl
cirruit peks in
anti-sraric
bags
if p6siblc.
I
l.
Disconneat
Pl
.nd
P2 cables
from
conEol
crniet
(levcl
A)
snd
pon c.ni.r (lcvel
B),
12.
Disconn€ct ground
sulps
batwcen
caricr
lcvcls
A
and
B, B rnd C,
snd
A
8lld
D. I.!vc
Sroutd
s!"aps
all4had io
drc
D-lcvcl aarier.
EiSht
tround srrqs
o!
aJsociatcd
with
both
bvcls.
13.
Rcmovc
J5tt910AA
Contol Cari€r in lcvcl
A
and
rrplac!
n
with J58890AK modulc conlol