.
,
1NSTAf;wLTION
INSTRUCTIONS
FOR
W-T336
EPROMS
mt
The following procedures should be followed in the exact
order in which they are written. If these instructions are not
followed, permanent damage to the RMSS could result.
NOTR:
It is recommended that before upgrading the
EMUS
that all
programming be saved (section 16) since the system may return to
the default program during this procedure.
Materials needed to complete this software change:
4 l
Eprom(s)
-
1
l
IC extraction tool
.
1)
2)
3)
4)
5)
6)
.
‘1
8)
9)
10)
11)
12)
13)
14)
1%
16)
17)
Turn the power switch on all KX-T336 cabinets to the OPF
position and disconnect all power cords
from
the AC
If any optional system battery adapters (RX-A26) are outlets.
installed, set their power switches to the off position.
Remove
the front
cwer
by
turnin
then pulling the cover
forward.
g the key counterclockwise and
Locate the
aCPUa
card installed in slot BS 1 and remove the
guide plate from the upper front side (if installed) to allow
-
access to
the
TPU”
card.
Set the
'W&e"
switch on the "CPU" card to position
0
and set
the
"synm"
switch to 0.
Before removing the-"CPU",
be sure to be wearing an anti-
static wristband or to ground yourself.
Remove the
"CPU"
card which is inserted into the slot marked
"CPU*
by lifting both latches on the
"CPU"
card
and/z&en
pulling the card out.
Place the
"CPU"
card on a flat work surface and locate IC 11,
12.,
13 and'14 (see
figure
1).
Gently
remove the chips from the sockets using a IC
extraction tool.
Install each new IC in the proper
socket
on the
*CPU"
card
making sure that they are in the correct position and that
all the pins remain straight.
Install the
"CPU"
card.
Install the PCB guide plate.
Connect all power cords to the
AC.outlets.
Turn the power switches to the ON positions and push the reset
button.
Wait until system returns to the on-line mode.
Turn the power switches on all optional system battery
adapters
(~~0~26)
to the ON position.
Verify that all programming is retained or Load system
parameters as instructed in section 16.
Page 1 of 2
