SDM3045X Service Manual 13
Assembly Procedures
This chapter describes how to remove the major modules from the SDM3045X.
To install the removed modules or replace new modules, please follow
corresponding operating steps in reverse order.
Security Consideration
Only qualified personnel should perform the disassembly procedures.
Whenever possible, disconnect the power before removing or replacing.
Otherwise, personal injuries or damages to the components may occur.
Avoid Electric Shock Hazardous voltages exist on the LCD module and
power supply module. To avoid electrical shock, disconnect the power cord
from the multimeter and then wait at least three minutes for the capacitors in
the multimeter to discharge before beginning the disassembly.
Preventing ESD Almost all electrical components can be damaged by
electrostatic discharge (ESD) during handling. Component damages can occur
at electrostatic discharge voltages as low as 50 volts. The following guidelines
will help preventing ESD damage when servicing the instrument or any
electronic device.
◆ Disassemble instruments only in a static-free work area.
◆ Use a conductive work area to reduce static charges.
◆ Use a conductive wrist strap to reduce static charge accumulation.
◆ Minimize handling.
◆ Keep replacement parts in original static-free packaging.
◆ Remove all plastic, foam, vinyl, paper and other static-generating materials
from the immediate work area.
◆ Use only anti-static solder suckers.
Required Tools
Use these tools to remove or replace the modules in the multimeter:
⚫ T10 hexagon screwdriver
⚫ 2# Phillips screwdriver
⚫ Needle-nose pliers
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