General Disassemble 8 
158 Agilent U1602B/U1604B User’s and Service Guide 
Mechanical Disassemble
Follow the instructions in this section for instrument’s diassemble process.
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. Wait at least three minutes for the capacitors in the 
instrument to discharge before you begin diassemble.
AVOID DAMAGE TO ELECTRONIC COMPONENTS
ELECTROSTATIC DISCHARGE (ESD) can damage electronic components. When doing 
any of the procedures in this chapter, use proper ESD precautions. As a minimum, you 
should place the instrument on a properly grounded ESD mat and wear a properly 
grounded ESD strap.
After diassemble the instrument, calibration adjustment must be performed to 
insure the accuracy of the meter and scope measurement. Only service-trained 
personnel is authorized to perform calibration adjustment to the instrument. Send 
the instrument to the nearest Agilent Technologies service center for calibration 
adjustment.