Keysight Technologies E8257D - A4 Inverter (Serial Number Prefix < US;MY5 XXX3 XXX Only); Tools Required; Removal Procedure; Replacement Procedure

E8257D/67D, E8663D PSG Signal Generators Service Guide 277
Assembly Replacement
A4 Inverter (serial number prefix < US/MY5XXX3XXX only)
A4 Inverter (serial number prefix < US/MY5XXX3XXX only)
Tools Required
—none
Removal Procedure
Refer to Figure 3-12 for this procedure.
1. Disconnect the power cord.
2. Remove the front panel. Refer to “Front Panel” on page 262.
3. Disconnect the A4W1 cable from the A31 Motherboard P12.
4. Disconnect the A2DSW1 cable from the A4 Inverter.
5. Remove the A4 Inverter by carefully pulling it away from the front panel.
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.
The A4 Inverter is fragile and can be damaged when pulled away from the velcro
attachment.