HP Pro 3410 Micro Maintenance & Service Guide Pro 3400 3405 3410 3500 3505 - Page 103

Removing DIMMs, Electrostatic Discharge Information, on Preparation for Disassembly

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The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending on how the DIMMs are installed. Removing DIMMs 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 42. 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 87). 2. Remove the access panel (Access Panel on page 88). 3. Remove the front bezel (Front Bezel on page 90). 4. Rotate the optical drive to its upright position. Memory 93

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The system will automatically operate in single channel mode, dual channel mode, or flex mode,
depending on how the DIMMs are installed.
Removing DIMMs
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
42
.
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
87
).
2.
Remove the access panel (
Access Panel
on page
88
).
3.
Remove the front bezel (
Front Bezel
on page
90
).
4.
Rotate the optical drive to its upright position.
Memory
93