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Troubleshooting & Service Model T101 Instruction Manual
214
To view or clear a warning message press:
SAMPLE SYSTEM RESET H2S = XXX.X
TEST CAL MSG CLR SETUP
If warning messages re-appear,
the cause needs to be found. Do
not repeatedly clear warnings
without corrective action.
Press CLR to clear the current
warning message.
If more than one warning is
active, the next message will
take its place.
Once the last warning has been
cleared, the analyzer returns to
SAMPLE Mode.
SAMPLE RANGE=500 PPB H2S = XXX.X
< TST TST > CAL MSG CLR SETUP
SAMPLE SYSTEM RESET H2S = XXX.X
< TST TST > CAL MSG CLR SETUP
In WARNING mode, <TST TST>
buttons replaced with TEST
buttom. Pressing TEST switches
to SAMPLE mode and hides
warning messages until new
warning(s) are activated.
MSG indicates that one or more
warning message are active but
hidden. Pressing MSG cycles
through warnings
In SAMPLE mode, all warning
messages are hidden, but MSG
button appears
Figure 9-1. Viewing and Clearing Warning Messages
Table 9-1. Warning Messages - Indicated Failures
WARNING
MESSAGE
FAULT CONDITION POSSIBLE CAUSES
ANALOG CAL
WARNING
The instrument’s A/D
circuitry or one of its
analog outputs is not
calibrated
A parameter for one of the analog outputs has been changed and the
calibration routine was not re-run
A/D circuitry failure on motherboard
Other motherboard electro9nic failure
BOX TEMP
WARNING
Box Temp is < 5
°
C or
> 48
°
C.
NOTE: Box temperature typically runs ~7
o
c warmer than ambient
temperature.
Poor/blocked ventilation to the analyzer.
Stopped exhaust-fan
Ambient temperature outside of specified range
CANNOT DYN
SPAN
Dynamic Span
operation failed
Measured concentration value is too high or low.
Concentration slope value to high or too low
CANNOT DYN
ZERO
Dynamic Zero
operation failed
Measured concentration value is too high.
Concentration offset value to high.
CONFIG
INITIALIZED
Configuration and
Calibration data reset
to original Factory
state.
Failed disk on module
User erased data
CONV TEMP
WARNING
The temperature of the
H
2
S SO
2
catalytic
converter is outside its
optimal operating
range.
Bad converter heater
Bad converter temperature sensor
Bad relay controlling the converter heater
Entire relay board is malfunctioning
I
2
C buss malfunction
DARK CAL
WARNING
The Dark Cal signal is
higher than 100 mV.
Light leak in reaction cell
Shutter solenoid is not functioning
Failed relay board
I
2
C bus failure
Loose connector/wiring
PMT preamp board bad or out of cal
DATA
INITIALIZED
Data Storage in DAS
was erased
Failed disk on module
User cleared data
HVPS WARNING High voltage power
supply output is <400
V or >900 V
High voltage power supply is bad
High voltage power supply is out of cal
A/D converter circuitry is bad
07266B DCN6485