E8257D/67D, E8663D PSG Signal Generators Service Guide 373
Assembly Replacement
A36 Quadraplier (Options 550 and 567)
A36 Quadraplier (Options 550 and 567)
Tools Required
— T–10 driver
— 5/16” open–ended wrench
Removal Procedure
Refer to Figure 3-63 for this procedure.
1. Disconnect the power cord.
2. Remove the covers from the signal generator. Refer to “Outer Instrument
Cover” on page 258 and “Inner Instrument Cover” on page 260.
3. Position the signal generator with the A31 Motherboard facing away from
you and the RF deck on top.
4. Using the needle–nose pliers, disconnect the following flexible cables:
— W108 from A36J4
— W109 from A36J3
— W110 from A36J6
— W111 from A36J7
— W96 from A36J5
5. Using the 5/16” open–ended wrench, disconnect the following RF cables:
— W106 from A36J1
— W107 from A36J2
— W112 from A36J3/RF OUT
6. Using the T–10 driver, remove the four screws that attach the A36
Quadraplier board to the side panel.
7. Disconnect the W113 ribbon cable from the A36J10.
8. Remove the A36 Quadraplier from the RF deck.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Torque all T–10 screws to 9 in–lbs.
3. Torque all RF connectors to 8 in–lbs.
4. Perform the post–repair adjustments and performance tests that pertain
to this removal procedure.
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