Teledyne 300E Instruction Manual page 190

TROUBLESHOOTING & REPAIR PROCEDURES
Warning
Message
FRONT PANEL
WARN
PHOTO TEMP PHT DRIVE is >2500
WARNING
REAR BOARD
NOT DET
RELAY BOARD
WARN
SAMPLE FLOW
WARN
SAMPLE PRES
WARN
at sea level decreasing
SAMPLE TEMP Sample temperature is
WARN
SOURCE Occurs when CO Ref is
WARNING
conditions will result in
SYNC WARNING
190
Fault Condition
The CPU is unable to
Communicate with the
Front Panel Display
/Keyboard
mVDC
Mother Board not
detected on power up.
The CPU cannot
communicate with the
Relay Board.
Sample flow rate is <
500 cc/min or > 1000
cc/min.
Sample Pressure is
<15 in-Hg or
> 35 in-Hg
Normally 29.92 in-Hg
at 1 in-Hg per 1000 ft
of altitude (with no
flow – pump
disconnected).
o o
< 10 C or > 100 C.
<1250 mVDC or
>4950 mVDC.
Either of these
an invalid M/R ratio.
Phase Lock Loop (PLL)
has lost lock on wheel
rotation.
Model 300E Carbon Monoxide Analyzer
Possible Causes
WARNING only appears on Serial I/O COM Port(s)
Front Panel Display will be frozen, blank or will not respond.
§ Failed Keyboard
2
§ I C Bus failure
§ Loose Connector/Wiring
§ Failed IR Photo-Detector
§ Failed Sync/Demod Board
§ IR Photo-Detector improperly attached to the Sample
Chamber
§ BENCH TEMP too high.
WARNING only appears on Serial I/O COM Port(s)
Front Panel Display will be frozen, blank or will not respond.
§ Massive Failure of Mother Board
2
§ I C Bus failure
§ Failed Relay Board
§ Loose connectors/wiring
§ Failed Sample Pump
§ Blocked Sample Inlet/Gas Line
§ Dirty Particulate Filter
§ Leak downstream of Critical Flow Orifice
§ Failed Flow Sensor/Circuitry
If Sample Pressure is < 15 in-HG:
§ Blocked Particulate Filter
§ Blocked Sample Inlet/Gas Line
§ Failed Pressure Sensor/circuitry
If Sample Pressure is > 35 in-HG:
§ Blocked Vent line on pressurized Sample/Zero/Span
gas supply
§ Bad Pressure Sensor/circuitry
§ Ambient Temperature outside of specified range
§ Failed Bench Heater
§ Failed Bench Temperature Sensor
§ Relay controlling the Bench Heater
§ Failed Relay Board
2
§ I C Bus
§ GFC Wheel stopped
§ Failed Sync/Demod Board
If Status LED's on the Sync/Demod Board ARE flashing the
cause is most likely a failed:
§ IR Source
§ Relay Board
2
§ I C Bus
§ IR Photo-Detector
§ GFC Wheel stopped
§ GFC Wheel rotation very slow/dragging
§ Failed Sync/Demod Board
If Status LED's on the Sync/Demod Board ARE flashing the
cause is most likely an a problem with the analyzer's main
power:
§ Intermittent loss of the power supply too short to
cause a SYSTEM RESET warning;
Instruction Manual
P/N 04288 Rev: A