A3 Analog Daughter Board Replacement; Tools Required; Removal Procedure; Replacement Procedure - Agilent Technologies E4980A Service Manual

Replacement Procedure

A3 Analog Daughter Board Replacement

A3 Analog Daughter Board Replacement

Tools Required

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Removal Procedure

Refer to Figure 6-4 and 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. Disconnect the front USB cable (item 1) from the front panel assembly.
Step 3. Disconnect the LCD cable (item 2) from the A1 Mother Board.
Step 4. Disconnect the power supply cable (item 3) from the A3 Analog Daughter Board.
NOTE Pull out the power supply cable straight without touching the hook on the cable connector.
Step 5. Disconnect the two SMB cables (item 4) from the A3 Analog Daughter Board.
Step 6. Disconnect the Analog Source Cable (item 5) from the A3 Analog Daughter Board.
Step 7. Remove the four TORX T10 screws (item 6) fastening the A3 Analog Daughter Board.
Step 8. Remove the A3 Analog Daughter Board.
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
NOTE
When you replace the A3 Analog Daughter Board, stick the Foot Bumper (item 7) to the
backside of the board as location of sub-figure in Figure 6-4.
When you fasten the A3 Analog Daughter Board with the four TORX T10 screws, set
screwdriver's torque to 8.7 in-lb.
When you connect the LCD Cable to the A1 Mother Board, make sure the LCD Cable lies
beneath the Analog Source Cable.
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Torque screwdriver, TORX T10
Torque screwdriver, TORX T20
Chapter 6