Installation Note N5225-90117 15
Description of the Upgrade
Installation Procedure for the Upgrade
— W62 (N5242-60025) A27 mixer brick (R1) to A24 IF multiplexer (P601)
— W63 (N5242-60026) A27 mixer brick (R2) to A24 IF multiplexer (P801)
— W70 (N5247-60024) A24 IF multiplexer board P203 to A16
SPAM board J5
— W72 (N5247-60023) A24 IF multiplexer board P603 to A16
SPAM board J2
— W80 (N5245-20048) A25 HMA26.5 to A27 mixer brick
These cables must be saved - they will be reinstalled.
— W12 (N5245-20109) A29 port 1 receiver coupler to W11
— W18 (N5245-20111) A32 port 2 receiver coupler to W17
— W40 (N5245-20042) Front panel port 2 RCVR B IN to A27 mixer brick
(B)
— W36 (N5245-20155) Front panel jumpers (quantity = 6)
NOTE: Remove and save the cable guards for the front panel jumpers.
Step 7.Remove the A27 Mixer Brick Assembly
Remove the A27 mixer brick assembly from the PNA. For instructions, click the
Chapter 7 bookmark, “Removing and Replacing the A27 and A28 Mixer Bricks”
in the PDF Service Guide
.
Step 8. Assemble the A28 Mixer Brick Assembly
1. Follow the instruction shown in
. New parts are listed in