5-2 System Unit Repair
When disassembling the system unit, follow these general rules.
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Disconnect all peripherals.
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When handling boards or chips, touch the system unit frame to discharge static.
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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 all removed connectors. Note where the connector goes and in what posi-
tion it was installed.
On completion of any reassembly, perform a power-on test (see in Section 2, Setup and
Operation). If a fault occurs, verify that the reassembly was performed correctly.
CAUTION:
When handling boards or chips,
ground yourself to release static.
System Unit Cover Removal
Remove the system unit cover as follows.
NOTE:
Unplug the power cord before disas-
sembling the system unit. Voltage is present in-
side the system unit even after the power is off.
All voltage is removed only when the power
cord is unplugged.
1.
Power off and unplug the keyboard, mouse, power and all other peripheral cables
attached to the system unit.
