262 E8257D/67D, E8663D PSG Signal Generators Service Guide
Assembly Replacement
Front Panel
Front Panel
Tools Required
— T–10 driver
— T–15 driver
— needle–nose pliers
Removal Procedure
Refer to Figure 3-3 for instruments with serial number prefix
< US/MY5XXX3XXX for this procedure.
Refer to Figure 3-4 for instruments with serial number prefix
≥ US/MY5XXX3XXX 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.
4. Remove the side trims that cover the six screws.
5. Using the T–15 driver, remove the six screws (1) from the sides of the
frame.
6. Using the T–10 driver, remove one screw on the top (2) and bottom (3)
frame.
7. Slide the front panel over the RF output connector (non–1EM signal
generators only).
8. Using the needle–nose pliers, disconnect the following flexible cables:
— W1 (EXT 1 INPUT) from the A11 Pulse/Analog Modulation
Generator J401 (non–1EM signal generators only).
— W2 (EXT 2 INPUT) from the A11 Pulse/Analog Modulation
Generator J402 (non–1EM signal generators only).
— W3 (LF OUTPUT) from the A11 Pulse/Analog Modulation Generator
J403 (non–1EM signal generators only).
To remove the Front Panel on signal generators with Option 1EM, complete steps
1 through 6 and steps 20 through 23.
Before removing the front panel from the signal generator, lift and support the
front of the signal generator’s frame.
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