Installation Note N5242-90003 29
Description of the Upgrade
Installation Procedure for the Upgrade
Step 14. Reinstall the A20 IF Multiplexer Board and the A19 Test Set
Motherboard
Reinstall the A20 IF Multiplexer Board
Refer to
for this part of this step of the procedure.
1.
Position the A20 IF multiplexer board in the analyzer and slide it toward
the rear of the instrument until the rear panel connectors are completely
through the rear panel.
2.
Loosely reinstall four screws (item
⑤
) in the A20 IF multiplexer board.
3.
Reinstall connector hardware (item
③
) on five rear panel RF connectors.
Torque the hex nuts to 21 in-lbs.
4.
Reinstall connector hardware (item
④
) on the rear panel PULSE I/O
connector. Torque the connector nuts to 6 in-lbs.
5.
Torque the four screws (item
⑤
) to 21 in-lbs.
6.
Reconnect ALL gray flexible RF cables (item
➁
) to the A20 IF multiplexer
board.
7.
Reconnect the ribbon cable (item
①
) to the A20 IF multiplexer board.
