6. Analysis and Elimination of Failure
Serial
number
Fault
phenomenon
Cause Analysis
Method of exclusion
Remarks
1
Press the power
key, the screen
does not appear
on the screen
1. The lithium
battery is low in
power;
2. Instrument
failure.
1. Use the instrument after
charging it;
2. It cannot be turned on
under charging status.
2
When using the
computer to
configure the
instrument,
there is no COM
port.
Poor connection
of data lines;
The USB driver
corresponding to
the computer is
not installed.
Unplug the data cable and
reconnect it;
Install the CP2102 driver of
the corresponding system,
download it yourself or
contact our sales staff to
request the driver.
3
Data in the air is
abnormal, TPM
is not 0
1. The sensor
cover is not
removed;
2. There are stains
on the sensor
surface.
1. Remove the sensor
cover;
2. Wipe the sensor surface
with a test strip.
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