# Practice with your mentor or another authorized user until you are comfortable with tool operation.
# Schedule a checkout session with a tool engineer via the helpdesk ticket system. If this checkout is successful, the engineer will authorize you on the tool.
Every other week a light cleaning is performed on the tool. A 5 min etch with [[Plasmatherm_790/Processes/m_si_o_1|m_si_o_1]] is performed on a 4" oxide wafer as a qualification run. The results can be seen below.