A42 20 Ghz Power Amp (Option 521); Tools Required; Removal Procedure; Replacement Procedure - Keysight Technologies E8257D Service Manual

Assembly Replacement

A42 20 GHz Power Amp (Option 521)

A42 20 GHz Power Amp (Option 521)

Tools Required

— T–10 driver
— 5/16" open–ended wrench

Removal Procedure

Refer to
1. Disconnect the power cord.
2. Remove the outer cover from the signal generator. Refer to
3. Position the signal generator with the A31 Motherboard facing you and the
4. Disconnect W135 from the A42 20 GHz Power Amp board.
5. Using the 5/16" open-ended wrench, disconnect the following RF cables
6. Using the T-10 drive, remove the three screws (1) the secure the A42
7. Remove the A42 20 GHz Power Amp from the RF deck.

Replacement Procedure

1. Reverse the order of the removal procedure.
2. Torque all T–10 screws to 9 in–lbs.
3. Perform the post–repair adjustments and performance tests that pertain
E8257D/67D, E8663D PSG Signal Generators Service Guide
Figure 3-70 for this procedure.
Instrument Cover" on page
RF deck on top.
according to the signal generator you have.
Standard: Disconnect W141 and W142 from the A42 20 GHz Power Amp
board.
Option 1EM: Disconnect W141 and W143 from the A42 20 GHz Power
Amp board.
20 GHz Power Amp board to the RF deck.
to this removal procedure.
258.
"Outer
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