352 E8257D/67D, E8663D PSG Signal Generators Service Guide
Assembly Replacement
A31 Motherboard (E8267D)
— W51 from A31J500
— W52 from A31J501
— W53 from A31J502
8. Using the needle–nose pliers, disconnect the W68 wire cable from
A31J250
9. Disconnect the W23 ribbon cable from the A21 Rear Panel Interface while
removing the
A31 Motherboard from the chassis.
10.Disconnect the W35 ribbon cable (not shown in Figure 3-54) from the A26
MID J10.
11.Using the T–10 driver, remove the 15 screws (1) that hold the A31
Motherboard to the chassis.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Send command "DIAG:FILE:BACK", this copies data to the Motherboard.
3. Torque all T–10 screws to 9 in–lbs.
4. Torque all RF connectors to 8 in–lbs.
5. Perform the post–repair adjustments and performance tests that pertain
to this removal procedure.
To Next Page
Loading...
Need help?
General
