Assembly Replacement
A28 YIG Oscillator
2-64
A28 YIG Oscillator
Tools Required
• T-10 driver
• 5/16” open ended wrench
Removal Procedure
Refer to Figure 2-31 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 with the A31 Motherboard facing you and the RF deck on top.
4. Disconnect the W12 ribbon cable from the A28 YIG Oscillator’s driver board.
5. Using the 5/16’ open ended wrench, disconnect the W38 RF cable from the A28 YIG Oscillator.
6. Using the T-10 driver, remove the two screws (1) that attach the A28 YIG Oscillator to the side panel.
7. Remove the A28 YIG Oscillator.
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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