170 Chapter 6
Replacement Procedure
A2 DC Source Board Replacement
A2 DC Source Board Replacement
Tools Required
• TORX screwdriver, T10, T15, and T20
• Flat edge screwdriver
• Open-end torque wrench, 5/16 inch (set to 1.02 N-m / 9.0 lb-in) (for reconnecting SMA
connector)
Removal Procedure
Refer to Figure 6-18 for this procedure.
Step 1. Remove the outer cover as described in “Outer Cover Removal” on page 136
Step 2. Remove the front panel as described in “Front Panel Removal” on page 138.
Step 3. Remove the three TORX T15 screws (item 1).
Step 4. Disconnect the USB cables (item 2) from the front USB PCA.
Step 5. Remove the two TORX T10 screws (item 3) from the DC source board.
Step 6. A short slide out the DC source board.
Step 7. Disconnect the cables (item 4) and remove the two TORX T10 screws from the DC source
board.
Step 8. Slide out the DC source board (item 5).
NOTE Remove the BNC connector as described in “Front BNC Connector Replacement” on
page 192.
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