Bus Fault Messages; Undetermined Problems - IBM 8676 - Eserver xSeries 335 Hardware Maintenance Manual And Troubleshooting Manual

Bus fault messages

Note: See "System" on page 112 to determine which components should be replaced by a field service technician.
Bus fault messages
Failure reading 12C device.
Check devices on bus 0.
Failure reading 12C device.
Check devices on bus 1.
Failure reading 12C device.
Check devices on bus 2.
Failure reading 12C device.
Check devices on bus 3.
Failure reading I2C device.
Check device on bus 4.

Undetermined problems

Use the information in this section if the diagnostic tests did not identify the failure,
the devices list is incorrect, or the system is inoperative.
Notes:
1. Damaged data in CMOS can cause undetermined problems.
2. Damaged data in BIOS code can cause undetermined problems.
Check the LEDs on all the power supplies. If the LEDs indicate the power supplies
are working correctly, complete the following steps:
1. Turn off the server.
2. Be sure the server is cabled correctly.
3. Remove or disconnect the following devices (one at a time) until you find the
4. Turn on the server. If the problem remains, suspect the following FRUs in the
Message Action
1. If installed, reseat the I2C cable between Remote Supervisor
Adapter (in PCI slot 1/J1) and system board (J2).
2. Memory DIMMs.
3. System board.
1. Reseat the I2C cable between the operator information panel
and system board (J10).
2. Operator information card.
3. System board.
1. Reseat the cable between system board and the power supply.
2. Power supply.
3. System board.
1. Reseat the cable between the SCSI backplane and connector
(J8) of system board.
2. SCSI backplane.
3. System board.
v System board
failure (turn on the server and reconfigure each time):
v Any external devices
v Surge suppressor device (on the server)
v Modem, printer, mouse, or non-IBM devices
v Each adapter
v Drives
v Memory modules (minimum requirement = two 256 MB DIMMs)
Note: Minimum operating requirements are:
a. Power supply
b. System board
c. One microprocessor and VRM
d. Memory (with a minimum of two 256 MB DIMMs)
order listed:
Chapter 6. Symptom-to-FRU index
109