Disassembly and Repair 5
Keysight U3401A User’s and Service Guide 89
Mechanical Disassembly
For procedures in this manual, the following tools are required for disassembly:
– T15 Torx driver
– T20 Torx driver (most disassembly)
– #2 Pozi-drive screw driver
General Disassembly
1 Remove power and all cables from the instrument.
2 Remove the carrying handle by rotating the handle upright and pulling out
from the sides of the instrument.
Shock hazard. Only service–trained personnel who are aware of the hazards
involved should remove the instrument covers. To avoid electrical shock and
personal injury, make sure to disconnect the power cord from the instrument
before removing the covers. Some circuits are active and have power applied
even when the power switch is turned off.
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