E8257D/67D, E8663D PSG Signal Generators Service Guide 285
Assembly Replacement
A11 Pulse/Analog Modulation Generator
A11 Pulse/Analog Modulation Generator
Tools Required
— needle–nose pliers
Removal Procedure
Refer to Figure 3-17 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 needle–nose pliers, disconnect the following flexible cables:
— W1 from A11J401
— W2 from A11J402
— W3 from A11J403
— W5 from A11J201
— W96 from A11J206
— W17 from A11J205
— W16 from A11J204
— W7 from A11J202
— W6 from A11J203
5. Lift the retention levers and disconnect the A11 Pulse/Analog Modulation
Generator from the
A31 Motherboard.
6. Lift the A11 Pulse/Analog Modulation 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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