Power On Self-Test - Philips TeleMon B M2636B Service Manual

Issue
Display looks dark
NBP measurement
difficulties
Diminishing battery life
Power On
The self-test function checks the following components:
Self-Test
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If during the self-test the battery charge is detected to be below 15%, the monitor will not
come up in Monitoring Mode. Instead, the monitor will power off and log a shutdown event
in the Event Log. To start the monitor again, insert the AC/DC power cable, or insert a fully-
charged battery.
If during self-test the NBP calibration is determined to be invalid, you are forced to enter
Service Mode. You cannot enter Monitoring Mode until you complete a valid NBP
calibration.
Note—
TeleMon still comes up to monitoring mode. You may continue using the battery if it has
enough charge for your monitoring needs. However, the battery should be reconditioned as
soon as possible.
If power is interrupted to the TeleMon and it does not have a battery installed, TeleMon's
settings revert to the unit settings.
Table 5-4. Additional Troubleshooting Tips
Probable Cause
If the display looks dark even after adjusting the brightness, it's
possible the display needs to be replaced. The display's estimated
half-life is approximately two years. (For details, see "The
Display" on page 5-41.)
If you experience difficulties conducting NPB measurements,
(for example a new patient has higher HR than the previous one),
reboot TeleMon to reset internal settings.
If the battery life seems to be diminishing after a number of
charge/discharge cycles, the battery may need reconditioning. For
details on how to recondition the battery, see "Using the Battery
Reconditioner" on page 5-26.
Circuit boards operation (including processor board)
Reporting of application and operating system revision numbers
Reporting of internal NBP module software revision number
TeleMon hardware revision
Clock
Keypad
Battery charge
Battery reconditioning
NBP calibration and use count
NBP measurement failure messages
If a message displays on the screen indicating that the battery needs reconditioning,
Troubleshooting, Service and Repair
Troubleshooting
5-11