Assembly Replacement
A23 Low Band Coupler/Detector
2-50
A23 Low Band Coupler/Detector
Tools Required
• T-10 driver
• 5/16” open ended wrench
• wire cutters
Removal Procedure
Refer to Figure 2-24 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to "Outer Instrument Cover" on page 2-4 and
"Inner Instrument Cover" on page 2-6.
3. Position the signal generator so that the A31 Motherboard is facing you and the RF deck is on top.
4. Using the 5/16” open ended wrench, disconnect the W27 RF cable from the A23 Low Band Coupler/Detector.
5. Using the wire cutters, cut the tie wrap that secures the W27 RF cable to the A23 Low Band Coupler/Detector.
6. Using the 5/16” open ended wrench, disconnect the W37 RF cable from the A23 Low Band Coupler/Detector.
7. Using the T-10 driver, remove the two screws that attach the A23 Low Band Coupler/Detector to the side panel.
8. Disconnect the W33 ribbon cable from the A23 Low Band Coupler/Detector.
9. Disconnect the W14 flexible cable from the A23 Low Band Coupler/Detector.
10. Remove the A23 Low Band Coupler/Detector.
Replacement Procedure
• Reverse the order of the removal procedure.
• Torque all T-10 screws to 9 in-lbs.
• Torque all RF connectors to 8 in-lbs.
• Perform the post-repair adjustments and performance tests that pertain to this removal procedure.
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