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Install new A43 board and cables (For E8257D/57N and E8663D with Serial
Prefixes >= US5150/MY5150)
Refer to Figure 10.
1. Position the signal generator with the front panel facing you.
2. Disconnect W139 and remove A43.
3. Replace A43 with the new part, E8251-60633 and reconnect W139.
4. Remove A8 board to install cables.
Use cable retainer within the kit to Install W138, E8251-20488. Refer to Figure 11.
Install W140, E8251-20489. Refer to Figure 10.
5. Connect remaining end of W138 to remaining end of W140.
6. Re-install A8 board.
Figure 10
W140
A8
A43
W139
W140
to
W138
21
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