Front Panel, Key Pad And Key Flex Circuit Replacement; Tools Required; Removal Procedure; Replacement Procedure - Keysight Technologies E4981A Service Manual

Front Panel, Key Pad and Key Flex Circuit Replacement

Tools Required

• Torque screwdriver, TORX T6
• Torque screwdriver, TORX T10
• Torque screwdriver, TORX T20
• Box torque wrench, 3/8 inch
• Box torque wrench, 5/8 inch

Removal Procedure

Refer to Figure 6-23
Step 1. Remove the 3/4 rack module top as described in
page 92.
Step 2. Remove the PSU Deck Assembly as described in
page 95.
Step 3. Remove the Front Panel Assembly as described in
page 101.
Step 4. Remove the Inverterl Assembly as described in
page 119.
Step 5. Remove the Display Support as described in
Step 6. Remove the two TORX T10 screws (item 1) fastening the Front Panel Assembly.
Step 7. Remove the USB Assembly from the Front Panel.
Step 8. Remove the 3/8 inch nut and washer (item 2) fastening the Binding Post Assembly.
Step 9. Slide the Binding Post Assembly from the Front Panel Assembly.
Step 10. Remove the Front Panel from the Key Pad, the Window EMI Shield, the Key Flex Circuit
and the EMI Shield (item 3).

Replacement Procedure

Step 1. Reverse the order of the removal procedure.
Chapter 6
Front Panel, Key Pad and Key Flex Circuit Replacement
and for this procedure.
"3/4 Rack Module Top Replacement" on
"PSU Deck Assembly Removale" on
"Inverter Assembly Replacement" on
"Display Support Removal" on page
Replacement Procedure
"Front Panel Assembly Removal" on
121.
125