Chapter 4 209
Assembly Replacement
Procedure 6. A6 Power Supply Assembly
Procedure 6.A6 Power Supply Assembly
Removal
WARNING The A6 Power Supply assembly contains lethal voltages with
lethal currents in all areas. Use extreme care when servicing
this assembly. Always disconnect the power cord from the
instrument before beginning this replacement procedure.
Failure to follow this precaution will represent a shock hazard
which may result in personal injury.
1. Disconnect the power cord from the spectrum analyzer.
2. Remove the spectrum analyzer cover assembly. Refer to “Procedure
1. Spectrum Analyzer Cover.”
3. Fold out the A2, A3, A4, and A5 assemblies as described in steps 2
through 6 under “Procedure 5. A2, A3, A4, and A5 Assemblies.”
4. Place the spectrum analyzer on the workbench with A2, A3, A4, and
A5 folded out to the right.
5. Remove the three screws securing the power supply shield to the
power supply and remove the shield. See Figure 4-16 on page 211.
6. Disconnect all cables from the A6 power supply assembly. See Figure
4-17 on page 214.
7. Use a T-10 TORX driver to remove the screws from the shield wall,
the heatsink, the base of the power supply (0515-1950) and the A6
power supply assembly.
8. Remove the A6 power supply assembly by lifting from the regulator
heatsink toward the front of the spectrum analyzer.
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