Chapter 8

Basic operation

Information
Do not restart or log off from Windows while the main power of the connected devices is ON. The devices
and IPU may fail to reconnect. If you restarted or logged off from Windows, shut down Windows, turn off
the main power of each device, and then repeat the procedure from step 1.

8.2.3 Executing an analyzer self-test
When the instrument power turns on, a self-test is automatically executed to check if there are any problems
with the analyzer. The self-test takes about 10 minutes. The self-test consists of the following tasks:

⏺ Initializing mechanical parts
The mechanical parts move to their initial positions, and the hydraulic parts are initialized and checked.

⏺ Rinsing hydraulic parts
Rinsing is performed 1 to 2 times, depending on how much time has elapsed since the previous rinsing.

⏺ Background check
A background check is performed without sample aspiration to check the effectiveness of rinsing. This is
repeated up to 3 times.
It is performed using measurement conditions for the background check. If the result (event count) does not
drop below the allowable value* after 3 runs, a [Background check error] occurs. For details, see the following:
(➤P.293 "Chapter 18 Troubleshooting")
* The factory setting for the allowable count value is 1,000.

Caution
Even if the results are not below the allowable value, you can end the check by clicking [Close] in the [Help]
dialog box. However, there is a risk that correct results may not be obtained.
Note that clicking [Close] does not clear the error.

Note:
To cancel logon and exit the IPU program, click [Abort]. You cannot exit the IPU program when the
instrument is in operation.

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XF-1600 Instructions for Use