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
222 Assembly-Level Service Guide
Preliminary Steps
CAUTION Before proceeding with the installation, follow all the ESD steps
as outlined in the section titled "Do This First" under the
"Introduction" at the beginning of Chapter 4 of this service guide.
1 Remove the instrument cover as follows:
NOTE Refer as necessary to the illustrations in the section titled “To
Remove the Cover and Rear Bezel” on page 173 of this guide.
2 To remove the counter handle, rotate the handle to the vertical
(90 degree) position and pull outward on the two side arms.
3 Using a T20 TORX screwdriver, loosen the two TORX-head screws
securing the rear panel bezel.
4 Slide the outside cover of the counter to the rear and remove the
cover.
5 If installed, disconnect and move the Option 300 Internal Battery
DC Power Assembly out of the way as follows (refer to the figures
in "To Remove the Internal Battery DC Power Assembly" in
Chapter 3, as needed):
– Remove the two T20 TORX screws and lockwashers
holding the Option 300 assembly to the left-hand side panel
(as viewed from the rear of the instrument).
– Lift up carefully on the left side of the assembly and
remove the assembly from the three large tabs holding it
on the right side.
– Lay the assembly on its back to the right side of the chassis
and place the three small tabs on the back side of the three
large tabs into the three slots on the assembly deck.
Disconnect the two cables going to the assembly.
6 Assemble the parts in the Option 106/115 package as follows: