Technical data
Repair Guide 6
N1911A/1912A P-Series Power Meters Service Guide 85
• Remove the top clamshell (Figure 6-3): 
Disconnect the mains power connector 
from the top clamshell. Disconnect the 
ribbon cable from the main board. 
Disconnect both earth spade connectors 
from the top clamshell. Remove top 
clamshell.
Figure 6-3
• Remove the PSU safety cover (Figure 6-4): 
Use the T10 Torx screwdriver bit to remove 
the 4 screws attaching the PSU safety cover 
to the top clamshell. Lift and remove the 
safety cover.
• Remove the PSU cable guide (Figure 6-4: 
Use the T10 Torx screwdriver bit to remove 
the screw attaching the cable guide to the 
top clamshell. Lift and remove cable guide.
Figure 6-4
Instructions Visual










