Front Panel, Key Pad, And Key Flex Circuit Replacement; Tools Required; Removal Procedure; Replacement Procedure - Agilent Technologies E4980A Service Manual

Replacement Procedure

Front Panel, Key Pad, and Key Flex Circuit Replacement

Front Panel, Key Pad, and Key Flex Circuit Replacement

Tools Required

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Removal Procedure

Refer to Figure 6-18 for this procedure.
Step 1. Remove the 3/4 Rack Module Top as described in "3/4 Rack Module Top Replacement" on
page 90.
Step 2. Remove the PCA E4980 USB as described in "PCA E4980 USB Replacement" on
page 117.
Step 3. Remove the A3 Analog Daughter Board as described in "A3 Analog Daughter Board
Replacement" on page 94.
Step 4. Remove the A2 Analog Board as described in "A2 Analog Board Replacement" on
page 96.
Step 5. Remove the Front Panel Assembly as described in "Front Panel Assembly Removal" on
page 98.
Step 6. Disconnect the Display Cable (item 1) from the Key Flex Circuit.
Step 7. Carefully remove the Display Support with the LCD display (item 2) from the Front Panel.
NOTE
When removing the Display Support, release the hook (flat cable side) of the Display
Support first, and then carefully release the other hooks of the Display Support.
Be careful not to break the hooks.
Step 8. Remove the Front Panel (item 3) from the Key Pad (item 4), the Window EMI Shield (item
5), the Key Flex Circuit (item 6), and the EMI Shield (item 7).
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
122
Torque screwdriver, TORX T10
Torque screwdriver, TORX T20
Box torque wrench, 7 mm
Box torque wrench, 5/8 inch
Chapter 6