Assembly Replacement
A18 CPU
2-34
A18 CPU
Tools Required
• none
Removal Procedure
Refer to Figure 2-16 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to "Outer Instrument Cover" on page 2-4 and
"Inner Instrument Cover" on page 2-6.
3. Position the signal generator with the front panel facing you.
4. Disconnect the W18 ribbon cable from A18J1.
5. Disconnect the W19 ribbon cable from A18J2.
6. Lift the retention levers and disconnect the A18 CPU from the A31 Motherboard.
7. Lift the A18 CPU out of the slot.
Replacement Procedure
• Reverse the order of the removal procedure.
• Perform the post-repair adjustments and performance tests that pertain to this removal procedure.
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