Mindray DC-25, Руководство по обслуживанию

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5-2 Function Checking and Testing
Please refer to Chapter 2.2.3 Environmental Conditions to see whether the humidity
and the temperature meet the environmental conditions.
If the insulation feature of the system deteriorates due to the increase of system
service time or system malfunctions, the fluctuation range of measurement results are
likely to increase with the increase in humidity.
5.3 General exam
5.3.1 Check Flow
Control panel
Display
Peripheral devices
I/O ports
ECG module
5.3.2 Checking Content
5.3.2.1 Check Control Panel
Procedure Standard
Check the functions of all keys and knobs
Follow the direction: left to right, and up to
down.
All keys and knobs are effective.
Function checking of the trackball

Press the <Freeze> key to enter the
Freeze status.

Press <Measure> to enter into measure
status, do vertical and horizontal
measurement, or do other trackball
operations.
The trackball can be rotated easily and
smoothly, the cursor responds sensitively,
the rotation direction is the same as the
direction of the cursor.