Replacing Assemblies 3
Keysight 53210A/53220A/53230A Assembly Level Service Guide 183
Tools Required
The following tools are required for these removal and replacement procedures:
–Hand TORX‚ 8 screwdriver (T8)
– Hand TORX‚ 10 screwdriver (T10)
– Hand TORX‚ 20 screwdriver (T20)
– 7-mm spin tight
– 14-mm deep-socket spin tight
–1/4" spin tight
– 5/16" open end wrench
– Static-Safe Workstation
Do this first
Before performing any of the removal and replacement procedures, the following
steps must be performed.
1 Turn counter off.
2 Remove AC line power cord from the rear AC line socket.
3 Open up the counter only at a static-safe workstation.
Hazardous voltages are on the power supply assembly. After unplugging the
instrument, wait at least 6 minutes for the capacitors on the power supply
assembly to discharge before working on the instrument.
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