Baseline Current Draw; Battery Voltage - Welch Allyn 53000 Service Manual

Service manual
e. Do not return the probe to the probe well.
2. If the SpO
a. Verify that the SpO
b. Verify that the current draw from the bench power supply is less than 800 mA.
3. Disconnect the SpO
4. Insert the temperature probe (if the monitor is so equipped) into the probe well.

Baseline current draw

1. With the monitor powered on, wait for the monitor LEDs to blank. In this state, the
SpO2 % reads - -, the time of day is displayed in the message window, and the rest of
the displays are blank.
2. Note and record the exact current from the power supply. (This value will be used in
the NIBP and printer tests.)

Battery voltage

1. Power the monitor off.
2. Simultaneously press and hold
(When the monitor completes the power-on self-test in service mode, the main
software version number appears in the message display.)
3. Press
4. Verify that the displayed battery voltage is within 0.1 volt of the DC power supply
input.
5. Exit Service Mode by turning off the monitor and then turning it on again.
option is present:
2
sensor cable is connected to the monitor.
2
sensor (if equipped).
2
repeatedly until BATTERY VOLTAGE appears in the message display.
and to bring up the monitor in SERVICE MODE.
Functional verification 13