Replaceable Parts 5
Keysight E4416A/E4417A Power Meters Service Guide 111
Removing the A4 Comms Assembly
1 Remove the A2 processor, A5 daughter and A6 measurement assemblies as
shown on page 109 and page 113.
2 Disconnect the line power module from the A1 power supply and the chassis.
3 Disconnect the earth wire screw. When replacing this screw use a 9 lb/in T15
screw driver.
4 Remove the two screws on the underside of the deck assembly. Remove the
assembly by sliding forward and tilting up from the rear. When replacing these
screws use a 21 lb/in T15 screw driver.
5 Unscrew the GPIB and RS232/422 connectors from the rear panel. When
replacing these screws use a 6 lb/in 9/32 in socket.