2 Troubleshooting Procedures | 2.4 System Board Troubleshooting |
Table
LED Status | Test item | Contents |
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0Fh | INIT_SYSTEM | (Initialization of system) |
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| Storing of CMOS error information to |
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| IRT_ERR_STS_BUF |
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| Controlling CD POWER SW (model supporting CD |
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| play) |
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| Timer initialization start |
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| EC initialization & Reading of battery information |
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| Update of system BIOS (Update EDID information for |
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| LCD) |
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10h | INIT_DISPLAY | (Waiting for VGA chip initialization completion, VGA |
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| BIOS initialization) |
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| Waiting for VGA |
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| Waiting for Display access completion |
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11h | Calling VGA BIOS |
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13h | DISP_LOGO | (Logo displaying) (Starting of logo display waiting |
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| LED=25H (unused)) |
14h | SYS_MEM_CHECK | (Check of conventional memory) (Boot) |
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15h | EXT_MEM_CHECK | (Exception check in protected mode) (Boot) |
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16h | INIT_SYS_MEM | (Initialization of conventional memory) (Reboot) |
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| (LED=17h if error occurred during exception check in |
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| protected mode) |
18h | CHK_DMA_PAGE | (Check of DMA Page Register) (Boot) |
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19h | CHECK_DMAC | (Check of DMAC) (Boot) |
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1Ah | INIT_DMAC | (Initialization of DMAC) (Boot) |
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1Bh | CHECK_PRT | (Check of printer existence) (For models supporting |
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| Printer port) |
1Ch | CHECK_SIO | (Check of SIO) (model supporting SIO) |
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1Dh | Process of DIAGNOSTIC | (When DIAGNOSTIC mode is permitted) |
| inspection result display |
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1Eh | BOOT_PASSWORD | (Check of password) |
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| Waiting for FDD initialization completion (For models |
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| supporting |
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| (In the case of “Reboot”) | Waiting for HDD initialization completion |
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| Check of key input during IRT (waiting for KBC |
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| initialization completion) |
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| I/O LOCK Processing (model supporting I/O LOCK) |
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| Initialization of ATA priority |
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[CONFIDENTIAL] | TECRA S3 Maintenance Manual |
