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TROUBLESHOOTING & REPAIR M300EU
Addendum to M300E/EM Manual P/N 04288
11.2. FAULT DIAGNOSIS WITH WARNING MESSAGES
The following Table replaces Table 11-1; of the M300E/EM Operators Manual.
Table 11-1: Warning Messages - Indicated Failures
WARNING
MESSAGE
FAULT CONDITION POSSIBLE CAUSES
BENCH TEMP
WARNING
The optical bench temp is
controlled at 48 ± 2
°
C.
Bad bench heater
Bad bench temperature sensor
Bad relay controlling the bench heater
Entire relay board is malfunctioning
I
2
C buss malfunction
BOX TEMP
WARNING
Box Temp is
< 5
°
C or > 48
°
C.
NOTE: For M300EU‘s operating for at least 2 hours, the box
temperature typically should be the same as the oven
temperature (46ºC).
Stopped motherboard stabilization fan
Stopped oven heater fan (there are two)
Failed oven heater (s)
Failed oven fan(s)
Failed oven temperature sensor
Failed relay controlling the one of the oven heaters
Failed relay board
I
2
C buss
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 chip
User erased data
DATA INITIALIZED
Data Storage in iDAS was erased
Failed disk on chip
User cleared data
FRONT PANEL
WARN
The CPU is unable to
Communicate with the Front Panel
Display /Keyboard
Warning only appears on serial I/O com port(s)
Front panel display will be frozen, blank or will not respond.
Failed keyboard
I
2
C buss failure
Loose connector/wiring
PHOTO TEMP
WARNING
PHT DRIVE is
>4800 mVDC
Failed IR photo-detector
Failed sync/demod board
IR photo-detector improperly attached to the sample chamber
Bench temp too high.
OVEN TEMP
WARNING
The temperature of the insulated
convection oven area of the
analyzer is outside of the specified
limits.
Oven temperature outside of specified range
Failed oven heater (s)
Failed oven fan(s)
Failed oven temperature sensor
Relay controlling the one of the oven heater
Failed relay board
I
2
C buss
REAR BOARD NOT
DET
Mother Board not detected on
power up.
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
RELAY BOARD
WARN
The CPU cannot communicate with
the Relay Board.
I
2
C buss failure
Failed relay board
Loose connectors/wiring
(Table continued on next page)
60 05514 Rev A1