TROUBLESHOOTING
8-2
8.1 Special Diagnostic Mode
To turn on the monitor to the special diagnostic mode,
push and hold the
[Y/+]
key, and then push and hold the
[MODE]
key for at least two seconds (until the beep
stops). After the required delay, release both keys, the
monitor will go through the start-up sequence and display a
“Diagnostic Mode” message. At the end of the special
mode start-up, the display will show the raw counts of
sensor channel 1A. These numbers are raw sensor readings
without calibration.
In Diagnostic Mode the pump and lamp are normally on,
and the user may enter Programming Mode and calibrate
the instrument as usual by holding the
[MODE]
and
[N/-]
keys down simultaneously for 3 seconds. Once the monitor
is started up in Diagnostic Mode, the user can switch
between Diagnostic Mode and normal operating mode by
pressing and holding down the
[MODE]
and
[Y/+]
keys
simultaneously for 2 seconds.
Critical parameters of the monitor available in Diagnostic
Mode are shown below. They can be reached by pressing
the
[MODE]
key repeatedly until the desired parameters
are displayed.
