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4 69 0 S E R I E S
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3 EPROM replacement
Wall-mount transmitter
WARNING
Remove all power from supply, relay and any powered
control circuits and high common mode voltages before
accessing the EPROM.
CAUTION
The transmitter is vulnerable to electrostatic damage. Wear
an anti-static strap or dismantle the unit on an anti-static
workbench.
1
Isolate the transmitter from the power supply.
2
Referring to Figure 1:
a
Slide cover
1
down, pull out slightly and slide off.
b
Release 4 captive screws
2
and remove protection
cover
3
.
c
Remove 2 screw caps
4
(if fitted).
d
Remove 6 front panel screws
5
and remove front
panel
6
.
Figure 1 Removing the front cover – wall-mount transmitter
3
Referring to Figure 2:
a
Locate EPROM
7
.
b
If required, remove personality module
8
.
c
Remove EPROM using extraction tool.
d
Using EPROM insertion tool, position replacement EPROM
carefully in socket ensuring notches in EPROM and socket
9
are aligned and that EPROM pins locate correctly in the
holes in the socket.
e
Press EPROM fully home.
f
Refit personality module
8
(if removed at step 2).
8
7
9
Figure 2 Replacing the EPROM – wall-mount transmitter
4
Referring to Figure 1:
a
Refit front panel
6
and secure with 6 front panel
screws
5
.
b
Refit 2 screw caps
4
(if fitted).
c
Refit protection cover
3
and secure with 4 captive
screws
2
.
d
Refit cover
1
.
5
Restore the power supply to the transmitter.
6
Configure the transmitter – see Section 4, page 3.
