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Keysight E4980A Service Guide

Keysight E4980A
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Keysight E4980A/E4980AL Precision LCR Meter 105
Replacement Procedure
Inverter Replacement
Inverter 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 6-17 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 A3 Analog Daughter Board as described in “A3 Analog Daughter
Board Replacement” on page 77.
Step 3. Remove the A2 Analog Board as described in “A2 Analog Board Replacement”
on page 79.
Step 4. Remove the Front Panel Assembly as described in “Front Panel Assembly
Removal” on page 81.
Step 5. Disconnect the display cable (item 1) from the Inverter.
Step 6. Release the Cable Assy from the clip (item 2) on the Front Panel Assembly.
Step 7. Disconnect the Cable Assy (item 3) from the Front Panel Assembly.
Step 8. Remove the two TORX T6 screws (item 4) fastening the Inverter and the
insulator.
Step 9. Remove the Inverter (item 5) with the insulator (item 6) from the Front Panel
Assembly. Then, remove the Inverter from the insulator.
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
When you fasten the Inverter and the insulator with the two TORX T6
screws, set screwdriver's torque to 3.05 in-lb.

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Keysight E4980A Specifications

General IconGeneral
Frequency Range20 Hz to 2 MHz
Basic Accuracy0.05%
DC Bias Voltage0 V to ±40 V
Measurement FunctionsL, C, R, Z, D, Q
DC Bias Current0 A to 20 mA (using external DC bias source)
DisplayLCD
InterfaceLAN, USB, GPIB
Dimensions426 mm (W) x 177 mm (H)
Weight13.5 kg

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