E8257D/67D, E8663D PSG Signal Generators Service Guide
Assembly Replacement
A3 Power Switch
3-19
A3 Power Switch
Tools Required
• T–10 driver
Removal Procedure
Refer to Figure 3- 10 for instruments with serial number prefix < US/MY5XXX3XXX.
Refer to Figure 3- 11 for instruments with serial number prefix > US/MY5XXX3XXX.
1. Disconnect the power cord.
2. Remove the front panel. Refer to “Front Panel” on page 3- 8.
3. Disconnect the W8 ribbon cable from the A3 Power Switch by lifting the white tabs on the connector.
4. Using the T–10 driver, remove the four screws (12) from the A3 Power Switch.
5. Remove the A3 Power Switch.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Torque all T–10 screws to 9 in–lbs.
3. Perform the post–repair adjustments and performance tests that pertain to this removal procedure.
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