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2 Troubleshooting Procedures | 2.4 System Board Troubleshooting | |||
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| LED Status | Test item | Contents |
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| 40h | Prohibition of PCI arbiter |
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| Setting of Wakeup event |
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| Forced off of fan |
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| Checks whether |
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| needed |
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| Power LED control during suspending |
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| Isolates |
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| Makes the power of sound off. |
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| Makes the power of Dock off. | (For models supporting Dock) |
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| 41h |
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| suspending |
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| Waiting for completion of dividing for |
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| suspending |
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| Stops dividing of extension command for |
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| power off. |
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| 42h | Measure for USB over current |
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| Calculation of check sum of PnP RAM area | (Not work in suspending for boot) |
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| Acquires how to turn the power off |
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| Resets by EC. | (when required) |
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| Makes not to send Eject Power Off |
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| command when turn the power off by the |
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| date check of alarm power on. |
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| Prohibition of all SMI |
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| Initializing of special register in suspending |
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| Calculates the check sum of SMRAM and |
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| stores it in SMRAM. |
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| 43h | Calculates the checksum of system BIOS in | (Checksum does not match during IRT) |
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| the IRT side |
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| Setting status of suspend completion |
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| Prohibition of L1&L2 |
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| Power off process | (BIOS process is end because of reaching |
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[CONFIDENTIAL] | TECRA S3 Maintenance Manual |