Dell Precision 330 - Manual (Page 59)

Replacing the Speaker (Desktop Chassis)
To replace the speaker, perform the removal procedure in reverse.
Mini Tower Chassis
l Removing the speaker
l Replacing the speaker
Removing the Speaker (Mini Tower Chassis)
1. Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover .
2. Remove the front panel .
3. Remove the AGP card brace .
4. Remove all expansion cards .
5. Remove the expansion-card guide .
6. Disconnect the speaker cable from the control-panel connector (SPKR). To locate this connector, see " Control Panel Components ."
7. Feed the speaker cable through the routing holes in the drive door and the front wall of the chassis.
NOTE: When mounting the speaker in the retention tabs in the front wall of the chassis, ensure that the speaker cable is oriented toward the top of the chassis.
CAUTION: Before you perform this procedure, see " Precautionary Measures ."
NOTICE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby power indicator on the
system board has turned off. To locate this indicator, see " System Board Components " or " Interior Service Label ."
NOTE: You must open the drive door to feed the speaker cable through the cable routing holes. The speaker cable routes through an enlarged hole in the
front chassis wall and through a hole in the drive door.