Keysight E4980A/E4980AL Precision LCR Meter 109
Replacement Procedure
Display Interface Replacement
Display Interface Replacement
Tools Required
• Torque screwdriver, TORX T10
• Torque screwdriver, TORX T20
• Torque screwdriver, TORX T6
• Box torque wrench, 7 mm
• Box torque wrench, 5/8 inch
Removal Procedure
Refer to Figure 6-19 for this procedure.
Step 1. Remove the 3/4 Rack Module Top as described in “3/4 Rack Module Top
Replacement” on page 73.
Step 2. Remove the PCA E4980 USB as described in “PCA E4980 USB Replacement”
on page 102.
Step 3. Remove the A3 Analog Daughter Board as described in “A3 Analog Daughter
Board Replacement” on page 77.
Step 4. Remove the A2 Analog Board as described in “A2 Analog Board Replacement”
on page 79.
Step 5. Remove the Front Panel Assembly as described in “Front Panel Assembly
Removal” on page 81.
Step 6. Remove the Inverter as described in “Inverter Replacement” on page 105.
Step 7. Remove the Front Panel, the Key Pad, and the Key Flex Circuit as described in
“Front Panel, Key Pad, and Key Flex Circuit Replacement” on page 107.
Step 8. Remove the four TORX T6 screws (item 1) fastening the LCD Display.
Step 9. Remove the LCD Display (item 2) from the Display Support with the Display
Interface.
Step 10. Carefully remove the Display Interface (item 3) from the Display Support (item
4).
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
When you fasten the LCD Display with the four TORX T6 screws, set
screwdriver's torque to 3.05 in-lb.
When you replace the LCD Display with a new one, stick new gaskets (P/N
: E4980-25003 x 2, E4980-25004 x 2) to surroundings on the LCD Display.
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