Teledyne GFC 7001E User Manual download pdf (Page 304)

Troubleshooting & Repair Model GFC7001E Carbon Dioxide Analyzer

Teledyne Analytical Instruments 304

13.6.4. DISK-ON-MODULE REPLACEMENT PROCEDURE

Replacing the Disk-on-Module (DOM) will cause loss of all DAS data; it also may 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, auto-cal, analog

output, serial port and other settings before replacing the DOM

2. Turn off power to the instrument, fold down the rear panel by loosening the mounting screws.

3. When looking at the electronic circuits from the back of the analyzer, locate the Disk-on-Module in the

right most socket of the CPU board.

4. The DOM should carry a label with firmware revision, date and initials of the programmer.

5. Remove the nylon fastener that mounts the DOM over the CPU board, and lift the DOM off the CPU. Do

not bend the connector pins.

6. Install the new Disk-on-Module, making sure the notch at the end of the chip matches the notch in the

socket.

7. It may be necessary to straighten the pins somewhat to fit them into the socket. Press the DOM all the

way in and reinsert the offset clip.

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 information.

13.7. TECHNICAL ASSISTANCE

If this manual and its troubleshooting / repair sections do not solve your problems, technical assistance may be

obtained from:

TELEDYNE ELECTRONIC TECHNOLOGIES

Analytical Instruments

16830 Chestnut Street

City of Industry, CA 91748

Telephone: (626) 934-1500

Fax: (626) 961-2538

Web: www.teledyne-ai.com

Before you contact Teledyne Customer service, fill out the problem report form in Appendix C, which is also

available online for electronic submission at http://www.teledyne-api.com/forms/

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Teledyne GFC 7001E User Manual Page 304