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The￿manual￿is￿divided￿into￿the￿following￿parts:￿￿

Chapter￿1￿ Hardware￿Overview￿describes￿the￿Qosmio￿)￿0￿system￿unit￿and￿each￿FRU.￿

Chapter￿2￿ Troubleshooting￿Procedures￿explains￿how￿to￿diagnose￿and￿resolve￿FRU￿ problems.￿

Chapter￿3￿ Test￿and￿Diagnostics￿describes￿how￿to￿perform￿test￿and￿diagnostic￿ operations￿for￿maintenance￿service.￿

Chapter￿4￿ Replacement￿Procedures￿describes￿the￿removal￿and￿replacement￿of￿the￿ FRUs.￿

Appendices￿ The￿appendices￿describe￿the￿following:￿

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￿￿ Handling￿the￿LCD￿module￿

￿￿ Board￿layout￿

￿￿ Pin￿assignments￿

￿￿ Keyboard￿scan/character￿codes￿

￿￿ Key￿layout￿

￿￿ Screw￿torque￿list￿

￿￿ Reliability￿

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Conventions￿

This￿manual￿uses￿the￿following￿formats￿to￿describe,￿identify,￿and￿highlight￿terms￿and￿operating￿ procedures.￿

Acronyms￿

On￿the￿first￿appearance￿and￿whenever￿necessary￿for￿clarification,￿acronyms￿are￿enclosed￿in￿ parentheses￿following￿their￿definition.￿For￿example:￿

￿ Read￿Only￿Memory￿(ROM)￿

Keys￿

Keys￿are￿used￿in￿the￿text￿to￿describe￿many￿operations.￿The￿key￿top￿symbol￿as￿it￿appears￿on￿the￿ keyboard￿is￿printed￿in￿boldface￿type.￿

Key￿operation￿

iv￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿   ￿￿￿￿￿￿￿￿￿￿￿￿￿￿Qosmio￿ 0￿Maintenance￿Manual￿

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Toshiba Qosmio F50 manual Acronyms, ReadOnlyMemoryROM, Keys, Keyoperation