E8257D/67D, E8663D PSG Signal Generators Service Guide 363
Assembly Replacement
Rear Panel (Option 1EM)
Rear Panel (Option 1EM)
Tools Required
— T–10 driver
— needle–nose pliers
— 5/16” open–ended wrench
Removal Procedure
Refer to Figure 3-59 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
— W51 (Data) from A31 Motherboard J500 (E8267D only)
— W52 (Data Clock) from A31 Motherboard J501 (E8267D only)
— W53 (SYMBOL SYNC) from A31 Motherboard J502 (E8267D only)
— 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. Using the needle–nose pliers, disconnect A22W1 from the power supply.
7. Position the signal generator with the rear panel facing you.
8. Using the needle–nose pliers, disconnect the following flexible cables:
— W55 (SOURCE MOD INTERFACE) from A10 ALC J304.
— W4 (ALC INPUT) from the A10 ALC J4
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