Preparation For Disassembly - HP dx7500 - Microtower PC Service & Reference Manual

Preparation for Disassembly

1. Close any open software applications.
2. Exit the operating system.
3. Remove any diskette or compact disc from the computer.
4. Turn off the computer and any peripheral devices that are connected to it.
CAUTION:
CAUTION:
long as the system is plugged into an active AC outlet. In some systems the cooling fan is on even
when the computer is in the "Standby," or "Suspend" modes. The power cord should always be
disconnected before servicing a unit.
5. Disconnect the power cord from the electrical outlet and then from the computer.
6. Disconnect all peripheral device cables from the computer.
NOTE:
Keep all screws with the units removed.
CAUTION:
wrong screw in an application may damage the unit.
Turn off the computer before disconnecting any cables.
Regardless of the power-on state, voltage is always present on the system board as
During disassembly, label each cable as you remove it, noting its position and routing.
The screws used in the computer are of different thread sizes and lengths; using the
Preparation for Disassembly 47