Fault Diagnosis Using Diagnostic Mode - Teledyne 9110AH Instruction Manual

TELEDYNE Model 9110AH NO
Table 9-2: Front Panel Warning Messages (Continued)
Message
BLOCK TEMP WARNING
DCPS WARNING
OZONE GEN OFF
CANNOT DYN ZERO
CANNOT DYN SPAN
A/D NOT INSTALLED

9.1.3 Fault Diagnosis using DIAGNOSTIC Mode

Diagnostic mode can be looked at as a tool kit of diagnostics to help troubleshoot the
instrument.
To enter DIAG mode press:
SETUP-MORE-DIAG
The diagnostic modes are summarized in Table 9-3. To access these functions, after you have
pressed SETUP-MORE-DIAG, then press NEXT, PREV to select the desired mode, then press
ENTR to select the desired mode. This section is a detailed description of the test and
suggestions for its use.
Analyzer Operator Manual, 01620, Rev. F
X
Description
The sample flow orifice is located in a separate temperature
controlled block near the rear of the instrument. This message is
most often present during warm-up. It can also occur if heater is
not plugged in, or if thermistor has fallen out of block.
DCPS is out of specification 2500 mV
DCPS voltage per Section 9.3.5.
Ozone generator is turned off. See Table 9-10 for conditions.
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 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.
9-10
200 mV. Check each