E8257D/67D, E8663D PSG Signal Generators Service Guide
Assembly Replacement
A13 I/Q MUX (E8267D Standard or with Option 015) (Serial Prefixes <US4722/MY4722)
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A13 I/Q MUX (E8267D Standard or with Option 015) (Serial Prefixes <US4722/MY4722)
Tools Required
• T–10 driver
• needle–nose pliers
Removal Procedure
Refer to Figure 3- 18 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to “Outer Instrument Cover” on page 3- 4 and “Inner
Instrument Cover” on page 3- 6.
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 following flexible cables:
• W63 from A13J5
• W62from A13J6
• W49 from A13J7
• W50 from A13J8
• W61 from A13J9
• W60 from A13J10
• W59 from A13J11
• W58 from A13J12
• W57 from A13J13
• W56 from A13J14
6. Lift the retention levers and disconnect the A13 I/Q MUX from the A31 Motherboard.
7. Lift the A13 I/Q MUX out of the slot.
Replacement Procedure
1. Reverse the order of the removal procedure. (See the internal cover overlay for cable color codes.)
2. Perform the post–repair adjustments and performance tests that pertain to this removal procedure.
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