Battery Calibration Cardiograph Care and Maintenance
PageWriter TC 70 Cardiograph Service Manual 2-15
To calibrate the batteries on the cardiograph:
1
Attach the AC power cord to the cardiograph. Ensure that the AC power supply is
connected to a grounded electrical outlet and that the cardiograph is receiving AC power.
Check that the AC power indicator light (located next to the power button) is lit.
2 Fully charge the batteries.
3 To ensure that the batteries are fully charged, view the Charge Current field in the
Service Utility. Touch the
Setup button on the toolbar. Select the Service Utility from the
Setup main menu.
NOTE Accessing the Service Utility may require entering a password. If a password is lost and cannot be
retrieved, contact the Philips Response Center for assistance.
4
From the Service Utility screen, ensure that the About the Cardiograph button is selected
(top of screen). A selected button is highlighted in blue.
5 Underneath the Battery Status column (middle of screen), check that the Charge
Current
field for both batteries display 0 mA, ensuring that both batteries are fully
charged.
6 Touch the Print button (top of screen) to print out a report of the cardiograph settings
displayed on this screen.
7 Touch the Exit button (lower right hand corner of screen). Touch the Exit button again on
the Setup main menu.
8 Once the Main screen appears, touch the ID button to open the ID entry screen. Ensure
that the ID screen remains open.
9 Unplug the cardiograph from AC power. Ensure that the AC power indicator light (located
next to the power button) is not lit.
10 Keep the ID screen displayed and allow the batteries to deplete of all battery power. This
process will take approximately 8 hours to complete. When the batteries are depleted of all
power, the screen is black and the cardiograph cannot be returned to active use by
touching the power button.
11 Once the batteries are fully depleted, reconnect the cardiograph to AC power. Press the
power on the cardiograph to return it to active use.
12 On the Main screen, touch the Setup button.
13 Select the Service Utility from the Setup main menu.
14 From the Service Utility screen, ensure that the About the Cardiograph button is selected
(top of screen). A selected button is highlighted in blue.
15 Underneath the Battery Status column, check the Expected Max Error (%) and Full
Capacity (mAh)
values as viewed on the screen are different than the values printed on
the report generated from the Service Utility screen. If the values are different, the battery
calibration procedure is complete.
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