360 E8257D/67D, E8663D PSG Signal Generators Service Guide
Assembly Replacement
Rear Panel (Standard)
Rear Panel (Standard)
Tools Required
— T–10 driver
— needle–nose pliers
— 5/16” open–ended wrench
Removal Procedure
Refer to Figure 3-58 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. Using the T–10 driver, remove the four screws from the Baseband
Generator cover
(E8267D only).
4. Position the signal generator with the A31 Motherboard panel facing you.
5. Using the needle–nose pliers, disconnect the following flexible cables:
— W21 (10 MHz output) from A31 Motherboard J1043
— W47 from A31 Motherboard J1041
— W22 (10 MHz input) from A31 Motherboard J1042
— W68 (BBG Rear Pwr) from A31 Motherboard J250 (E8267D only)
— W80 (WIDEBAND I INPUT) from A35 3–20 GHz I/Q Modulator J106
(E8267D only)
— W79 (WIDEBAND Q INPUT) from A35 3–20 GHz I/Q Modulator J9
(E8267D only)
6. Position the signal generator with the rear panel facing you.
7. Using the needle–nose pliers, disconnect the following flexible cables:
— W55 (SOURCE MOD INTERFACE) from A10 ALC J304
— W65 (BASEBAND GEN REF IN) from A14 Baseband Generator Board
J800 (E8267D only)
— W56 (– Q OUT) from A13 I/Q MUX J14 (E8267D only)
— W57 (– I OUT) from A13 I/Q MUX J13 (E8267D only)
— W58 (Q OUT) from A13 I/Q MUX J12 (E8267D only)
— W59 (I OUT) from A13 I/Q MUX J11 (E8267D only)
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