IBM 887022X Maintenance Manual - Page 85

SMP1: Scalability Port1 __________ Scalability Port2 __________ Scalability Port3 __________ RXE Expansion Port A __________ SMP2: Scalability Port1 __________ Scalability Port2 __________ Scalability Port3 __________ RXE Expansion Port B __________ RXE100, SideA Port .......... RXE100, from SideA to SideB __________ RXE100, from SideB to SideA .......... RXE100, SideB Port .......... Use the following procedure to test any of these 12 ports: 1. Turn on pinging for two seconds. 2. Count the pings issued, the pings received, and the errors received. A port passes this test if both: 1. The port error status indicates: a. no transmit errors b. no receive errors 2. The percentage-good determined by (pings received) divided by (pings issued) is greater than 98%. However, a test can fail for many reasons. These checks are made just before the pinging is set to start: 1. The port is not initialized. 2. The port has no cable. 3. The cabling detected by BIOS during POST is invalid. Each failure shows a display of what the error is (for approximately three seconds). Recovering BIOS code If the BIOS code has become damaged, such as from a power failure during a flash update, the server might not restart correctly or might not display video (no video). You can recover the BIOS code using the BIOS code page jumper and a BIOS flash diskette. Note: You can download a BIOS flash diskette from the World Wide Web. v Use the ServerGuide program to make a BIOS flash diskette. Go to http://www.ibm.com/pc/support/, click IBM Server Support, and make the selections for the server. To recover the BIOS code: 1. Turn off the server and peripheral devices and disconnect all external cables and power cords; then, remove the cover (see "Opening the cover" on page 82). 2. Remove fans 3 and 4 (see "Replacing fans 3 and 4" on page 123). 3. Locate the boot recovery (BIOS) jumper (J28) on the I/O board. Chapter 3. Diagnostics 75