Fukuda Denshi Dynascope 8000 Series Maintenance Manual page 145

Chapter 9 Maintenance Check
No Check Items
3. Power Supply
01 Standby Switch
02 Battery-Charging
Operation
(When a battery is
installed)
03 Battery Operation
(When a battery is
installed)
04 Replacing the Battery
(When a battery is
installed)
No Check Items
4. Display/Operation/Print
01 Operation, Switch
02 LCD
03 Alarm Indicator
04 Alarm Sound/
Operating Sound
05 Date/Time
06 Printing Status
(When HR-800 is
used)
07 Paper Speed
(When HR-800 is
used)
08 Telemetry
Transmission
No Check Items
5. ECG
01 ECG Display Size
02 Heart Rate Display
Accuracy
03 Lead OFF
Check Procedure
Check by connecting the power cable to AC
100-240 V and turning the power ON/OFF using
a standby switch.
Install the battery, and check the charging
operation.
After charging the battery, unplug the power
cable, and change to battery operation.
Check the battery replacement date.
Check Procedure
Check by operating the control switches and
keys on the touch panel.
Check that the home display is displayed on the
LCD.
Check if the alarm indicator lights when the
power is turned ON.
On the "Tone/Volume" menu, check the alarm
sound.
Check the year, month, day, and time on the
display.
Perform test printing on the maintenance menu.
Visually check the printing condition and also if
there are thin or missing points.
Perform test printing on the maintenance menu.
Check by measuring the length of printed grid.
Perform telemetry transmission, and check the
reception condition and waveform on the
receiver side.
Check Procedure
Input square wave of 1 mV amplitude from the
simulator, and check the displayed waveform on
the monitor with a waveform size of x1.
Set the heart rate to 60 bpm on the simulator,
and check the displayed heart rate on the
monitor.
Remove each electrode from the simulator and
check that "Lead OFF" message is displayed.
Daily and Periodic Check
Criteria
Check that the power supply LED lights.
ON: Green, OFF: Orange
Check that the battery charging LED lights.
Charging is in process: Orange, Fully
charged: Green
No battery: Light Off
Check that the battery-operating condition is
as specified on the operation manual.
Should be within one year from start of
usage.
Criteria
Should operate correctly.
Characters and waveform should be clear.
The display should be clearly displayed with
sufficient brightness.
Should light when the power is turned ON.
Alarm sound should generate with proper
volume.
There should be no beat noise.
The year, month, day, and time should be
correctly displayed.
The printed characters should be clear and
legible.
Error should be within ±3% for 25 mm/sec
and 50 mm/sec waveform traces.
Correct waveforms and numeric data should
be displayed and receiving condition should
be stable.
Criteria
The amplitude of the displayed waveform
should be within 10 mm ± 1 mm.
The displayed heart rate should be within 60
bpm ± 3 bpm.
The "Lead OFF" message for the removed
electrode should be displayed.
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