Agilent Technologies M1205A V24, Service Manual

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Troubleshooting Plug-in Modules 5-21
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Troubleshooting CO
2
Problems
This section describes how to troubleshoot and correct faults associated with the CO
2
plug-in
module. The procedures for recognizing, isolating, and correcting faults with this module are as
follows:
• Identifying a problem based on visual indications or repeated INOPS.
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If
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are displayed for the CO
2
module, perform the
following actions:
6WHS
Make sure there is a transducer connected to the module. If no transducer is con-
nected, connect one.
6WHS
Make sure the CO
2
parameter is turned on. Turn it on, if it is not.
6WHS
Make sure the CO
2
numeric is turned on. Turn it on, if it is not.
6WHS
Make sure you don’t have more than one CO
2
module plugged into the module
racks you are using. If more than one CO
2
module is plugged in, the supernumerary
modules are ignored and should be removed.
6WHS
Check the connection on the module and the rack interface.
Unplug and re-plug the CO
2
module and check if the green LED on the CO
2
module lights up after re-plugging. If it does not, proceed with the following:
Put the CO
2
module into another slot and check the LED once again. If it lights
up now, the connector for the previous slot is faulty and the rack needs to be
replaced. If it does not, proceed with the following:
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CO
2
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ZLWK
Replace the cable from the Satellite Rack to the function box. Again unplug
and re-plug the CO
2
module and check if the LED lights up. If it does not,
proceed with the following:
Plug any other (not faulty) module into the same slot and check if the LED
lights up. If the LED of the alternative module lights up, the CO
2
module is
defect and has to be replaced. If it does not, either the rack or the rack interface
card is defect. Proceed with the following:
Replace the rack and plug in the CO
2
module into the new rack. If the LED on
the module does not light up, replace the rack interface card in the function
box.