Teledyne 6200A Manual page 153

TAI Model 6200A SO
Table 9-2: Front Panel Warning Messages (Continued)
Message
IZS TEMP WARNING
PMT TEMP WARNING
CANNOT DYN ZERO
CANNOT DYN SPAN
V/F NOT INSTALLED
DCPS WARNING
Analyzer Operator Manual, 02164, Rev. G
2
Description
IZS temp. out of spec. The warning message is most often present
during initial warm-up or poor electrical contact.
PMT temp. out of spec. The PMT temp has its own control circuit
on the preamp (01141A) board. Warnings will occur during
initial warm up period. The warning can occur if the 7 pin
connector to the interior of the sensor is not plugged in. The
power from the PSM should be checked for proper voltage
(+15VDC ± 0.5) on the TEC driver circuit mounted on the fan
duct. Test point 1 and test point 4 (white) should measure 15
VDC and LED should lit brightly.
Dynamic zero cal. out of spec. The reading of the PMT was too
high for the ZERO button to appear. Make sure the instrument is
receiving zero gas. Check for dirty reaction cell. Do the factory
calibration procedure located in Section 9.1.6.
Dynamic span cal. out of spec. The reading of the PMT was too
high or low for the SPAN button to appear. Make sure the
instrument is receiving correct concentration span gas. Make sure
the expected span concentration is entered. Check for dirty
reaction cell. Do the factory calibration procedure located in
Section 9.1.6.
V/F (00514A) board has failed. The V/F board did not respond to
commands from the CPU. This probably means 1. board not
seated in socket 2. defective board 3. defective back plane
connector
DC power supply output is put of specification. Test
measurement display is below 2300mV or above 2700mV. Refer
to Section 9.3.5.
9-10