7-5 
 
7.3.7 Removing Battery Interface Board and Power Board (Passport 8/cPM 8) 
1.  Unscrew the three M3×6 screws inside the monitor and the four M3×6 screws on the bottom as shown below: 
   
2.  Disconnect the cable between battery interface board and power management board, and the cable between 
the power management board and AC/DC power board. Then take out the battery compartment assembly. 
 
3.  Unscrew the two M3 nuts to take out the battery interface board. 
 
4.  Unscrew the three M3×6 screws to remove the AC/DC power board. 
 
Cable between the power 
management board and 
AC/DC power board 
Cable between the battery 
interface board and power 
management board