System Unit Cover Removal - NEC POWERMATE PROFESSIONAL 9000 Service Manual

5-2 Repair
When disassembling the system unit, follow these general rules.
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Before opening the system or handling boards or chips, touch the frame to
discharge static.
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Disconnect all peripherals before disassembling the system unit.
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Do not disassemble parts other than those specified in the procedure.
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All screws are Phillips-head, unless otherwise specified.
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Label any connector before removing it. Note where the connector goes and in
what position it was installed.
On completion of any reassembly, perform a power-on test (see Section 2, "Setup and
Operation"). If a fault occurs, verify that the reassembly was performed correctly.

System Unit Cover Removal

To remove the system unit covers, see "System Unit Covers" in Section 3.
CAUTION: Before handling boards or chips,
ground yourself to release static.
WARNING: Unplug the power cord before
disassembling the system unit. Voltage is present
inside the system unit even after the power is off.
All voltage is removed only when the power cord
is unplugged.