I/O Interface Board Fuse Replacement - Alcatel ASM 180 TD User Manual

Purpose of
the interface board
Accessing the
interface board
24 V output
Alcatel Vacuum Technology France - ASM 180 TD/TD+ - ASM 181 TD+ User's Manual
I/O interface board
fuse replacement
Fuse specifications:
T 1.25A - 250V 5 x 20 mm
It controls the I/O interface which is used to link the detector to
an external control system.
On ASM 180 TD and ASM 180 TD+, it is located in the
bottom part of the detector, protected by a stainless steel cover.
On ASM 181 TD+, it is located on the rear inside the frame.
ASM 180 TD and ASM 180 TD+:
- Switch off the detector and disconnect all the connectors at
the rear.
- Remove the rear cover and unfasten the 3 attachment screws
of the stainless steel bottom cover located at the same level as
the interface connectors on the frame.
- Open the front cover and unfasten the 4th screw located near
the hybrid turbomolecular pump (oblong hole on the frame).
- At the bottom part of the detector, release the I/O interface board
and the stainless steel protective cover on which it is attached.
ASM 181 TD+:
- Remove the rear and side cover.
- The I/O board is accessible at the rear inside of the frame
near the Sub-D connectors.
- A 24 V DC ouput is provided on this board (pins 24 and 25
of the I/O interface)
- This output can or cannot be selected using straps located on
this board (ST1 and ST2).
- If these straps are present, the 24 V output is available on the
pins 24 and 25 of J3.
- If there are no straps, an external power supply (coming from
an automatic control system for example) should be provided
( see B 20 ).
E 80
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