Tektronix T921 Instruction Manual page 71

15mhz
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RETAINER
BUSHING
REV . A, JUNE 1976
Fig. 5-6. Shaft-knob removal.
Fig. 5-7. T921 and T922 circuit board locations.
Service Information-T921/T922/T922R
5 . Pull the attenuator assembly off the Vertical Amplifier
board . Be careful not to bend the connector pins .
6. To remove the attenuator shield, first unsolder the
leads to the BNC connector. Take care not to touch the
body of the capacitor with a hbt soldering iron . Then
remove the retaining screws . Be careful not to remove the
screws holding the cam switch against the attenuator
board . Lift the shield off the attenuator .
1 . Replace the attenuatorshield and resolderthe lead to
the BNC connector. Avoid touching the capacitor with a
hot soldering iron .
2. Slide the BNC connector and coupling switch into
the front panel .
3. Make sure the connecting pins and holders on the
bottom of the attenuator board align properly.
4. Set the attenuator board down on the Vertical board
and secure it with the three retaining screws .
To replace the attenuator :
1982-42
5- 1 3

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T922T922r

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