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To remove CPU
1 Remove cover (see ‘’To remove cover’’). 2 Using a T-10 torx driver, remove the nine
screws from the A7 CPU assembly. Lift the
assembly up, unpluging the A7 CPU assembly from
the A8 Memory assembly and A99 Motherboard.
3 Disconnect the ribbon cables from the A7
CPU assembly.
4 The analyzer’s serial number and firmware
options are stored in EEPROM (U27) on the A7
CPU assembly. Before replacing the CPU
assembly, remove A7 U27 from the faulty assembly
and insert into the new assembly. See ‘’What to do
before replacing the CPU assembly’’ on page 6-3.
Agilent 35670A Replacing Assemblies
To remove CPU
6-11