E8257D/67D, E8663D PSG Signal Generators Service Guide 293
Assembly Replacement
A14 Baseband Generator (E8267D Only)
A14 Baseband Generator (E8267D Only)
Tools Required
— T–10 driver
— needle–nose pliers
Removal Procedure
Refer to Figure 3-21 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to “Outer Instrument
Cover” on page 258 and “Inner Instrument Cover” on page 260.
3. Position the signal generator with the front panel facing you.
4. Using the T–10 driver, remove the four screws from the Baseband
Generator cover.
5. Using the needle–nose pliers, disconnect the W65 flexible cable from
A14J800.
6. Disconnect the W64 ribbon cable from A14J13.
7. Disconnect the W90 ribbon cable from A14J21 (Option 602 only).
8. Lift the retention levers and disconnect the A14 Baseband Generator from
the A31 Motherboard.
9. Lift the A14 Baseband Generator out of the slot.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Perform the post–repair adjustments and performance tests that pertain
to this removal procedure.
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