IBM 9228 Service Guide - Page 22

Controls, LEDs, and connectors This section describes the computer controls, light-emitting diodes (LEDs), and connectors. Front view Figure 1 shows the controls, LEDs, and front connectors on the IntelliStation Z Pro Type 9228 and 9232 computers. See the User's Guide for an illustration and description of the input/output connectors on the rear of the computer. Power-on LED Power-control button Hard disk drive activity LED Ethernet transmit/receive activity LED System-error LED CD or DVD drive activity LED CD or DVD eject button Headphone connector Microphone connector USB connectors IEEE 1394A (FireWire) connector 1394 Optional disketteeject button Optional diskette drive activity LED Figure 1. Controls, LEDs, and indicators Power-on LED When this LED is lit, it indicates that the computer is turned on. Power-control button Press this button to turn the computer on or off. Hard disk drive activity LED When this LED is lit, it indicates that the hard disk drive is in use. Ethernet transmit/receive activity LED When this LED is lit, it indicates that there is activity between the computer and the network. There are two of these LEDs, one on the front and one on the rear of the computer. 4 IBM IntelliStation Z Pro Type 9228 and 9232: Problem Determination and Service Guide