background image

 10                                                                                                                                  Installation Note E4411-90045

Refer to

Figure 7

 for steps 2 through 6.

2. Locate the two long (8160–0959) and two short (8160–0960) EMI foam gaskets.

3. Install one of the short gaskets, along the left or right edge of the opening, approximately 1 mm

from the edge, as shown in the figure. Use the following steps:

a.  Remove the protective paper backing from the gasket strip, to expose the self-stick adhesive.

b. On the inside of the front frame, center and align the gasket along the edge of the opening. (The

short gaskets should have approximately equal amounts of overlap at the top and bottom of the
opening.)

c.  Firmly press along the length of the gasket to adhere it to the frame.

4. Repeat steps 3a through 3c with the remaining short gasket along the opposite edge of the opening.

5. Repeat steps 3a through 3c to install one of the long gaskets, along the top or bottom edge of the

opening as shown in the figure.

NOTE

Make sure that the long gaskets touch the ends of the short gaskets. This is
necessary to create an airtight seal around the inner plastic lens and the LCD
display. The seal minimizes particulate contamination that may cloud the lens.

6. Repeat steps 3a through 3c with the remaining long gasket along the opposite edge of the opening.

NOTE

The long gaskets will either partially or completely cover holes in the subpanel
through which rubber front panel alignment posts protrude. This is normal and
will not adversely affect the function of the gasket.

Figure 7

Gasket Placement

Summary of Contents for E4411-60019

Page 1: ...Part Number E4411 90045 Supersedes October 1998 Printed in USA May 2000 Installation Note Agilent Technologies ESA Spectrum Analyzer Gasket Upgrade Kit Kit Number E4411 60019 ...

Page 2: ...this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Copyright 1998 1999 2000 Agilent Technologies Inc ...

Page 3: ... a lens keypad assembly Because of variations in these assemblies it has been left up to the person performing the upgrade to order the appropriate lens keypad assembly for the instrument Refer to the instrument service guide for the applicable part number Product Affected ESA Spectrum Analyzers Serial Numbers All Options All To Be Performed By X Agilent Technologies Service Center Personnel Quali...

Page 4: ...ages Failure to heed the safety precautions can result in severe or fatal injury CAUTION Electrostatic discharge ESD can damage or destroy electronic components All work on electronic assemblies should be performed at a static safe workstation Refer to the documentation that pertains to your instrument for information about static safe workstations and ordering static safe accessories Description ...

Page 5: ...me facing down Refer to Figure 2 for steps 3 and 4 3 Remove the four screws 1 that hold the rear frame 2 and outer case 4 in place 4 Pull the instrument outer case and rear frame off toward the rear of the instrument CAUTION The rear EMI contact grid 3 that clips onto the rear panel can come loose Note the correct position to reattach the gasket Figure 2 Outer Case Rear Frame Removal ...

Page 6: ... two screws 5 on the bottom side of the instrument that secure the front frame to the RF assembly 2 Place the instrument with the top side facing up and remove the remaining three screws 1 that secure the front frame to the inner shield Remove the two screws 2 that secure the front frame subpanel to the chassis 3 Slide the front frame 4 forward until it catches on the tabs 3 on the sides of the ch...

Page 7: ... 6 4 Disconnect the ribbon cable 1 from the front panel interface board 5 Carefully pull the sides of the front frame subpanel away from the chassis and over the tabs 6 Slide the front frame forward to disengage from the chassis assembly Figure 4 Front Frame Ribbon Cable ...

Page 8: ...is delicate With a small screwdriver or similar tool gently push the lock tabs out from the back of the connector Excessive force on the locking tab will brake the retaining clips and if broken board replacement will be necessary 3 Disconnect the W3 display ribbon cable 2 from the front panel interface board The ribbon cable connector has a lock that needs to be slid out before removing the ribbon...

Page 9: ...r to Figure 6 Use a pair of needle nose pliers to remove the metal fingers located in three places on the front frame around the lens opening NOTE The fingers are held in place with adhesive and some force may be required to remove them Figure 6 Metal Finger Location ...

Page 10: ...asket to adhere it to the frame 4 Repeat steps 3a through 3c with the remaining short gasket along the opposite edge of the opening 5 Repeat steps 3a through 3c to install one of the long gaskets along the top or bottom edge of the opening as shown in the figure NOTE Make sure that the long gaskets touch the ends of the short gaskets This is necessary to create an airtight seal around the inner pl...

Page 11: ...ad assembly for the repair Removing the Keypad Flex Circuit 1 Remove the volume knob and the RPG knob by pulling straight off of the control shafts NOTE There is a water seal gasket placed around the volume control shaft that will need to be repositioned during the replacement procedure Refer to Figure 8 for steps 2 and 3 2 Remove the six screws 1 securing the subpanel 2 to the front frame 5 Lift ...

Page 12: ...control shaft is correctly positioned 5 Ensure that the flex circuit is aligned with the pegs and not visible through the screw holes in the subpanel Replace the six screws that secure the subpanel to the front frame Replace the four screws that secure the display to the front frame Torque to 101 N cm 9 inch pounds 6 Press the volume and RPG knobs onto their control shafts Reinstalling the Display...

Page 13: ...ecure the front frame to the chassis Torque to 101 N cm 9 inch pounds Replacing Outer Case 1 Replace the instrument outer case by matching the grill on the side of the case to the fan on the power supply assembly 2 Fit the leading edge of the case completely into the slot on the back of the front frame assembly Refer to Figure 2 for steps 3 through 5 3 Replace the rear frame assembly 2 on the inst...

Page 14: ...pair After the spectrum analyzer assemblies have been repaired or replaced perform the related adjustments and performance verification tests Refer to the Adjustment and Tests for Replacement or Repaired Assemblies in the Post Repair Procedures chapter of the service guide for the related adjustments and performance verification tests required for each assembly ...

Reviews: