RIGOL  Chapter 1 Disassemble and Assemble 
1-6  MSO1000Z/DS1000Z Service Guide 
  Pay attention to the connecting positions of the power cord and fan cable 
before removing them to avoid incorrect connection or incomplete 
connection when assembling the instrument. 
 
Check whether the screen line and the keyboard cable on the main board are 
correctly installed before assembling the rear metal cover.