LFE 2000 Series - Page 39

9s8-31
REV.
B
3
'
7
uo
Dl-!
L!4
r.n!
q
-i-&q'-
rtr
E
ruqlp
u
p-L-E-Lr,.qL
ro--rtu:,nrEBEq-q2Q-,*j
xrllrlnorulr,,
Remove
the
Input/otttput ('rlo)
board
from
the
electronic
assembly
and
the
Mother
board
from
Lhe
bezel
assembly
per
instruction
}n
sections
l.g
and
1.
l0
ancl
make
the
following
changes.
(LFE p/N's
in
brackets.
)
2.
l.
I
.
ADD
cetlter
board
connector
p3
(345-764)
to
tntother
board
(not
needed
j
f
unrt
already
has
center
board
connector
installed).
.SOLDER
the
stripped
encl
of
the
black
lead
assembly
(231g_lg7)
rn
Cplj
boar.rl
hole
A15.
S0[,DER
the
stripped
end
of
the
black/white
lead
assembly
(2)79_216)
in CpU
boar
d
hole
Al6.
.SO[,DER
the
stripped
enrl
of
the
green
leacl
assenbly
(2379_,201)
rn
CpU
board
hole
A17.
4,
5.
6.
7.
e
14.
lf
ADD
rr:sistor
R2
20-l%
(1826-20)
on
I/O
board.
REM0VE
resistors
Rl
and
R5
on I/O
board.
OPEN.I24
foil
hndge
(on
component
side)
of
I
S0LDER
bridge
I/O
board
Jj5.
0n
newer
I/O
(2378-247)
from
I/O
board
hole
R5
(top
end)
earlier
boards
where
A24
does
not
appear,
ternrinal
F
(cND).
/0
board.
boards,
solder
the
ye11ow
leacl
to
I/O
board
hole
A24.
For
use
the
f eed
throrrgh
ho
I e
at
e'
SOLDER
the
red
lead
(2378-75)
from
I/0
board
connector
pin
p7-5
(or
AiB)
ro
the
I/ri
hole
A23.
For
earlier
boards
where
A23
does
not
appear,
sse
the
feed
throrrgh
hole
at
terminal
G.
10'
INSERT
the
power
supplv
board
(1651--l940)
in
the
center
board
connector.
I
I
' CI)NNECT
the
bl
ack
l ead
f
rom
the
cPU
board
to
center
boarcl
pr
n
Al
.
(toNNFlcT,
the
black/white
lead
f rom
the
cPll
board
to center
board
prn
A2.
(loNNFlu,f
the
green
lead
frorn
the
cpu
board
to
center
board
pin
43.
l2'
ASSFIMBLE
rear
ends
of
PCB's
totether
using
new
shorter
spacers
and
hardware
supplred
in
the
kit.
(see
Figure
l_l
)
Il
'
REMOVE
the
cold
Junction
Compensating
Resistor
assembly
fronr
the
rear
termrnals
of
the
control
lr:r
case
(terrnrnals
F &
G)
for
older
control
ters
or.
renrove
the
compensating
resistor
(C.IC1)
and
its
slpport
f rom
the I
r,0
boatcl
of
newer
cont
rol
lers.
CALIBMTE
a.s
a standard
4-20
rrA
SHIP
copy
of
supplementary
rnsti
(A
copy
of
thrs
rnstruction
may
rnput
per
tltst
ructions
rn Section
6,
1 2.1.
r,rctjon
956-646
along
with
standar"d
manual
be
found
in Section
I
3.2.
)
LFE
Instruments
Drvisron
-32-