E8257D/67D, E8663D PSG Signal Generators Service Guide 295
Assembly Replacement
A17 Baseband Generator Interface (E8267D Only)
A17 Baseband Generator Interface (E8267D Only)
Tools Required
— 5.0 mm hex–nut driver
— 9/16” hex–nut driver
— needle–nose pliers
Removal Procedure
Refer to Figure 3-22 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. Remove the rear panel. Refer to “Rear Panel (Standard)” on page 360 or
“Rear Panel (Option 1EM)” on page 363.
4. Disconnect the W64 ribbon cable from A17P2.
5. Disconnect the W90 ribbon cable from A17P1.
6. Using the needle–nose pliers, disconnect the W68 wire cable from A17P4.
7. Using the 9/16” hex–nut driver, remove the nuts and washers securing the
four BNC
connectors (1) on the rear panel.
8. Using the 5.0 mm driver, remove the hex screws (2) and washers that
secure the A17 Baseband Generator Interface to the rear panel.
9. Remove the A17 Baseband Generator Interface.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Torque all hex screws to 9 in–lbs.
3. Perform the post–repair adjustments and performance tests that pertain
to this removal procedure.
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