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Maintenance Section 7-3
3. When the Relay has been pushed inside as far as it will go, raise the lever
so that it is covering the top of the Relay.
Replacing the Cassette With the following Units, a malfunctioning Cassette can be replaced.
Transistor Input Units (with terminal block): GT1-ID16, GT1-ID16-1
Transistor Output Units (with terminal block): GT1-OD16, GT1-OD16-1
Analog Input Unit (with terminal block): GT1-AD04
Analog Output Unit (with terminal block): GT1-DA04
Temperature Input Unit: GT1-TS04T, GT1-TS04P
Note 1. Check that the internal power supply for the I/O Unit and the power sup-
plies for the I/O and I/O Interface Units are all OFF before performing Cas-
sette replacement.
2. Other I/O Units are not designed to house a Cassette. In order to avoid try-
ing to attach a Cassette to an incompatible Unit, check the I/O Unit first.
Use the following procedure to replace the Cassette. The GT1-AD04 is used
as an example. The same general procedure applies to other Units.
1,2,3... 1. For the Analog Input and Output Units, as well as the Temperature Input
Unit, with the top part of the Cassette pressed down, pull the Cassette out-
wards (see diagram below). For the Transistor Input and Output Units, with
the bottom part of the Cassette pressed up, pull the Cassette outwards.
2. Insert the new Cassette as far as possible into the space, taking care about
its orientation. After doing so, try to gently pull the Cassette outwards to
check whether it is secure.
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