IBM 8668 Hardware Maintenance Manual - Page 134

Host Built-In Self Test (BIST), Bus fault messages, Undetermined Problems, If installed

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Host Built-In Self Test (BIST) Message Host BIST fail(level-informational; host's built-in self test failed) Action 1. Reseat CPU 2. Reseat VRM 3. Replace CPU Bus fault messages Message Failure reading I2C device. Check devices on bus 0. Failure reading I2C device. Check devices on bus 1. Failure reading I2C device. Check devices on bus 2. Failure reading I2C device. Check devices on bus 3. Failure reading I2C device. Check devices on bus 4. Action 1. If installed, reseat I2C cable between Remote Supervisor Adapter (in PCI slot 1/J44) and planar (J45) 2. Reseat Memory DIMMs 3. Memory DIMMS 4. System Board 1. Reseat Front LED cable to J39 connector 2. Replace front LED card 3. Replace System Board 1. Reseat cable (Power Backplane to System Board-Signal) to J43 connector of system board 2. Reseat Power backplane if one is installed 3. Reseat Power Supply 4. Replace power backplane if one is installed 5. Replace Power Supply 6. Replace system board 1. Reseat cable (Power backplane to System Board-Signal) to J43 connector of system board 2. Reseat cable (Power backplane to DASD backplane 3. Replace DASD backplane 4. Replace system board 1. Replace system board Undetermined Problems You are here because the diagnostic tests did not identify the failure, the Devices List is incorrect, or the system is inoperative. Notes: 1. If you suspect a software mismatch is causing failures (solid or intermittent), be sure to see "Error symptoms" on page 115. 2. A corrupt CMOS can cause undetermined problems. 3. A corrupt BIOS can cause undetermined problems. See "Recovering BIOS code" on page 17. Check the LEDs on all the power supplies, see"Power supply LED errors" on page 116. If the LEDs indicate the power supplies are working correctly, return here and do the following: 126 Hardware Maintenance Manual: xSeries 232, Type 8668

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Host Built-In Self Test (BIST)
Message
Action
Host BIST fail
(level-informational; host’s
built-in self test failed)
1.
Reseat CPU
2.
Reseat VRM
3.
Replace CPU
Bus fault messages
Message
Action
Failure reading I2C device.
Check devices
on bus 0.
1.
If installed, reseat I2C cable between Remote Supervisor Adapter
(in PCI slot 1/J44) and planar (J45)
2.
Reseat Memory DIMMs
3.
Memory DIMMS
4.
System Board
Failure reading I2C device.
Check devices
on bus 1.
1.
Reseat Front LED cable to J39 connector
2.
Replace front LED card
3.
Replace System Board
Failure reading I2C device.
Check devices
on bus 2.
1.
Reseat cable (Power Backplane to System Board-Signal) to J43
connector of system board
2.
Reseat Power backplane if one is installed
3.
Reseat Power Supply
4.
Replace power backplane if one is installed
5.
Replace Power Supply
6.
Replace system board
Failure reading I2C device.
Check devices
on bus 3.
1.
Reseat cable (Power backplane to System Board-Signal) to J43
connector of system board
2.
Reseat cable (Power backplane to DASD backplane
3.
Replace DASD backplane
4.
Replace system board
Failure reading I2C device.
Check devices
on bus 4.
1.
Replace system board
Undetermined Problems
You are here because the diagnostic tests did not identify the failure, the Devices
List is incorrect, or the system is inoperative.
Notes:
1.
If you suspect a software mismatch is causing failures (solid or intermittent), be
sure to see “Error symptoms” on page 115.
2.
A corrupt CMOS can cause undetermined problems.
3.
A corrupt BIOS can cause undetermined problems. See “Recovering BIOS code”
on page 17.
Check the LEDs on all the power supplies, see“Power supply LED errors” on
page116. If the LEDs indicate the power supplies are working correctly, return
here and do the following:
126
Hardware Maintenance Manual: xSeries 232, Type 8668