Interpreting Warning Messages - Teledyne 300E Instruction Manual

TROUBLESHOOTING & REPAIR PROCEDURES
Check for gas flow problems such as clogged or blocked internal/external gas
lines, damaged seals, punctured gas lines, a damaged pump diaphragm, etc.
5. Follow the procedures defined in Section 11.5 for confirming that the analyzers
basic components are working (power supplies, CPU, Relay Board,
Sync/Demod Board, Keypad, GFC Wheel Motor, etc.). See Figure 3-5 for
general layout of components and sub-assemblies in the analyzer. See the
wiring Interconnect Drawing and Interconnect List, documents 04216 and
04217.

11.1.1. Interpreting WARNING Messages

The most common and/or serious instrument failures will result in a warning
message being displayed on the front panel. Table 11-1 lists warning messages,
along with their meaning and recommended corrective action.
It should be noted that if more than two or three warning messages occur at the
same time, it is often an indication that some fundamental analyzer sub-system
(power supply, Relay Board, Motherboard) has failed rather than indication of the of
the specific failures referenced by the warnings. In this case, it is recommended
that proper operation of power supplies (see Section 11.5.2), the Relay Board (see
Section 11.5.5), and the A/D Board (see Section 11.5.7) be confirmed before
addressing the specific warning messages.
The analyzer will alert the user that a Warning Message is active by displaying the
keypad label MSG on the Front Panel. In this case the Front panel display will look
something like the following:
SAMPLE
<TST TST>
The analyzer will also alert the user via the Serial I/O COM port(s) and cause the
FAULT LED on the Front panel to blink.
188
RANGE=50.00 PPM
CAL
Model 300E Carbon Monoxide Analyzer
CO = 00.00
MSG
CLR SETUP
Instruction Manual
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