Specifications

Chapter 4 Retrofitting Options
To Retrofit the 53220A/53230A Channel 3 Input, 6.0 GHz (Option 106) or
15.0 GHz (Option 115) plus Front Panel Option 202
Assembly-Level Service Guide 229
NOTE Be sure that the right-hand side tab (see step 8 above) locks the
right-hand side panel in place. It may be necessary to gently press
outward on the right-hand side panel until the tab locks into
place.
16 Re-install the T20 TORX screw removed in step 6 above to lock the
left-hand side panel to the motherboard.
17 Re-install the processor board on the underside of the
motherboard (removed in steps 3 and 4 above) as follows:
18 Insert the rear left-hand corner of the processor board in the
horizontal slot (as viewed from above) and then line up the edge
connector pins on the board with the edge connector on the
underside of the front panel.
NOTE Verify that the processor board is parallel horizontally with the
motherboard. The rear left-hand corner must sit on top of the
small standoff inside the slot.
19 Press in carefully on the rear edge of the processor board until
the edge connector tabs lock into place.
20 Install the T10 TORX screw through the hole in the processor
board into the standoff on the motherboard (screw removed in
step 2 above).
21 Turn the chassis upright. Install the Channel 3 assembly as
follows:
22 Remove the T20 TORX screw at the rear of the motherboard.
23 Connect one end of the supplied 40-pin ribbon cable to J900 on the
motherboard. Connect the other end to J401 on the underside of
the Channel 3 circuit board.
24 Set the Channel 3 assembly down on top of the motherboard so
that the female SMA edge connector is near the male SMA