Disk-On-Module Replacement - Teledyne T400 User Manual

5.7.15.6

DISK-ON-MODULE REPLACEMENT

ATTENTION
Replacing the Disk-on-Module (DOM) will cause loss of all DAS data; it may also cause
loss of some instrument configuration parameters unless the replacement DOM carries
the exact same firmware version. Whenever changing the version of installed software,
the memory must be reset. Failure to ensure that memory is reset can cause the analyzer
to malfunction, and invalidate measurements. After the memory is reset, the A/D
converter must be re-calibrated, and all information collected in Step 1 below must be re-
entered before the instrument will function correctly. Also, zero and span calibration
should be performed.
1. Document all analyzer parameters that may have been changed, such as range,
2. Turn off power to the instrument, fold down the rear panel by loosening the
3. When looking at the electronic circuits from the back of the analyzer, locate the
4. The DOM should carry a label with firmware revision, date and initials of the
5. Remove the nylon standoff clip that mounts the DOM over the CPU board, and lift
6. Install the new Disk-on-Module, making sure the notch at the end of the chip
7. It may be necessary to straighten the pins somewhat to fit them into the socket.
8. Close the rear panel and turn on power to the machine.
9. If the replacement DOM carries a firmware revision, re-enter all of the setup
136
COULD DAMAGE INSTRUMENT AND VOID WARRANTY
Servicing of circuit components requires electrostatic
discharge protection, i.e. ESD grounding straps, mats and
containers. Failure to use ESD protection when working
with electronic assemblies will void the instrument
warranty. For information on preventing ESD damage,
refer to the manual, Fundamentals of ESD, PN 04786,
which can be
http://www.teledyne-api.com
Manuals in the Special Manuals section.
auto-cal, analog output, serial port and other settings before replacing the DOM
mounting screws.
Disk-on-Module in the right-most socket of the CPU board.
programmer.
the DOM off the CPU. Do not bend the connector pins.
matches the notch in the socket.
Press the chip all the way in.
information.
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