Service Procedures; Disk-On-Module Replacement - Teledyne t100 Operation Manual

Teledyne API - T100 UV Fluorescence SO
11.7.

SERVICE PROCEDURES

ATTENTION
11.7.1.

DISK-ON-MODULE REPLACEMENT

06807F DCN7335
Analyzer
2
VDC. The temperature set point (hard-wired into the preamplifier board) will vary by
about ±1° C due to component tolerances. The actual temperature will be maintained to
within 0.1° C around that set point.
On power-up of the analyzer, the front panel enables the user to watch that temperature
drop from about ambient temperature down to its set point of 6-8° C.
•
If the temperature fails to drop after 20 minutes, there is a problem in the cooler
circuit.
•
If the control circuit on the preamplifier board is faulty, a temperature of -1° C is
reported.
This section contains some procedures that may need to be performed when a major
component of the analyzer requires repair or replacement.
COULD DAMAGE INSTRUMENT AND VOID WARRANTY
Servicing of circuit components requires electrostatic discharge
protection (ESD), i.e. ESD grounding straps, mats and containers.
Failure to use ESD protection when working with electronic assemblies
will void the instrument warranty.
Refer to to the manual on Fundamentals of ESD, PN 04786, which can be
downloaded from our website at
Center > Product Manuals in the Special Manuals section.
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.
Troubleshooting & Service
http://www.teledyne-api.com under Help
243