Technical data
6Repair Guide
90 N1911A/1912A P-Series Power Meters Service Guide
• Remove DAP/PPMC (Figure 6-12): Use the 
T8 Torx screwdriver bit to remove the 
screws attaching the DAP and PPMC 
assemblies to the main board. Carefully 
remove the PPMC assembly by lifting the 
end closest to the DAP assembly. Carefully 
remove each DAP assembly by lifting the 
end closest to the rear panel.
Figure 6-12
• Remove the main board (Figure 6-13): Use 
the T20 Torx screwdriver bit to remove the 5 
screws attaching the main board to the 
bottom clamshell. Use the T20 Torx 
screwdriver bit to remove the screw 
attaching the earth wires to the line module. 
Remove the earth wires and washers, 
taking note of the assembly order. Lift & 
remove the main board.
Figure 6-13
Instructions Visual










