7-1
7
Maintaining Hardware
Preparing Tools
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Phillips screwdrivers: P1-100mm, P2-150mm, P3-250mm
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Flat-blade screwdrivers: P4-75mm
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ESD-preventive wrist straps, ESD-preventive gloves
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Antistatic bags, antistatic pads
Except an ESD-preventive wrist strap, none of the above installation tools are shipped with the device.
Precautions
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Maintain the firewall hardware under the guidance of the local dealer or technical support
engineers appointed by H3C.
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To avoid injuries, disconnect all power sources from the firewall before maintaining any hardware
modules of the firewall.
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Always wear an ESD-preventive wrist strap or ESD-preventive gloves when maintaining the
firewall hardware. For more information, refer to the section talking about electrostatic discharge
prevention in Chapter 3 “Preparing for Installation.”
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When installing or removing a demountable module, such as an MPU, an LPU, a memory module,
or a CF card, ensure good alignment with the slot and use uniform force to avoid damage to the
module.
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Put the removed MPU, LPU, memory module, or CF card on an antistatic workbench with the PCB
side facing upward or place it in antistatic bags.
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When checking or moving a removed MPU, LPU, memory module, or CF card, avoid touching any
components on the PCB.
Structure of the Firewall
Figure 7-1 shows the structure of the F5000-A5.
