HP t820, Руководство по обслуживанию и ремонту

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Installing SODIMMs
CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power
to drain before adding or removing memory modules. Regardless of the power-on state, voltage is
always supplied to the memory modules as long as the computer is plugged into an active AC outlet.
Adding or removing memory modules while voltage is present may cause irreparable damage to the
memory modules or system board.
The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is
important to use memory modules with gold-plated metal contacts to prevent corrosion and/or
oxidation resulting from having incompatible metals in contact with each other.
Static electricity can damage the electronic components of the computer or optional cards. Before
beginning these procedures, ensure that you are discharged of static electricity by briefly touching a
grounded metal object. For more information, refer to Electrostatic discharge information on page 10 .
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage
the module.
1. Prepare the computer for disassembly ( Preparation for disassembly on page 17 ).
2. Remove the access panel ( Access panel on page 18 ).
3. Locate the memory module sockets on the system board.
WARNING!
To reduce risk of personal injury from hot surfaces, allow the internal system
components to cool before touching.
4. To remove a SODIMM, press outward on the two latches on each side of the SODIMM (1) then
pull the SODIMM out of the socket (2) .
To install memory modules, reverse the removal procedure.
The computer automatically recognizes the additional memory when you turn on the computer.
24 Chapter 4 Removal and replacement procedures