Toshiba A20-S259 Maintenance Manual - Page 78

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Table 2-3 Printer port LED boot mode status (6/8) LED Status 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h 12h Test item PnP Hardware initialization Output code generation First 64KB memory check Interrupting vector initialization NDP initialization System initialization Waiting for the completion of VGA chip, VGA BIOS initializati on Logo Display System memory check External memory check Message Running a task for waiting the completion of PnP resource creating Serial interrupt control (before executing interrupt) PnP Hardware initialization PC card slot initialization FIR initialization PCI auto configuration Preparing work for auto configuration Acquiring PCI IRQ Configuration Storing the result of VGA configuration Running a task for waiting the completion of PCI configuration Initialization of hardware that is necessary after PCI configuration Setting of printer port Start of HDD initialization sequence SD initialization Output code generation First 64KB memory check Interrupting vector initialization NDP initialization Storing CMOS error status in IRT error status buffer Start of timer initialization Initialization of buffer for power save EC initialization and reading battery information System BIOS update (Update of model name, EDID information for LCD) Waiting for the completion of VGA chip, VGA BIOS initialization Logo Display Conventional memory check (Boot) Check of exceptional cases in protected mode (Boot) 2-28 Satellite A20 Maintenance Manual (960-444)