4-10 
 
4.3.4 Battery Check 
Required Tool: 
  None 
 
Functional Test 
1.  If the equipment is installed with a battery, remove the battery first. 
2.  Verify that the equipment works correctly when running powered form an AC 
source. 
3.  Insert the battery per the procedures provided in the operator’s manual. 
4.  Remove the AC power cord and verify that the equipment still works correctly. 
 
 
Performance Test 
Perform the test by referring to the Battery chapter in the operator’s manual and verify the 
operating time of the battery meets the product specification. 
 
 
4.4 Maintenance Mode 
4.4.1 Entering/Quitting Maintenance Mode 
1.  Start the monitor. Within 10 seconds after you hear a beep, press and hold the 
  button to enter the Maintenance mode. 
2. Press the 
  button to toggle among maintenance items, such as NIBP unit 
setup, Temperature unit setup, system time setup, NIBP leakage test, NIBP 
accuracy test, version information, restoring factory configuration, work time 
information, screen brightness adjustment and DIAP communication setup. 
3.  Press and hold the    button to power off the monitor. The settings take effect 
after the monitor restarts. 
 
Using Keys 
In different modes, the key functions vary: 
 
Mode  Keys and Functions 
Measurement Mode 
: Press this key to change patient category.   
: Start/stop NIBP measurements. 
: Press to: 
  Clear the parameter value displayed on 
the screen (such as NIBP, Temp value). 
  Clear the error code. 
  Clear NIBP cuff indicator.