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Preface￿

This￿maintenance￿manual￿describes￿how￿to￿perform￿hardware￿service￿maintenance￿for￿the￿Toshiba￿ Personal￿Computer￿Satellite,￿referred￿to￿as￿the￿Satellite￿Series￿in￿this￿manual.￿

The￿procedures￿described￿in￿this￿manual￿are￿intended￿to￿help￿service￿technicians￿isolate￿faulty￿ Field￿Replaceable￿Units￿(FRUs)￿and￿replace￿them￿in￿the￿field.￿

SAFETY￿PRECAUTIONS￿

Four￿types￿of￿messages￿are￿used￿in￿this￿manual￿to￿bring￿important￿information￿to￿your￿attention.￿￿ Each￿of￿these￿messages￿will￿be￿italicized￿and￿identified￿as￿shown￿below.￿

DANGER:￿ “Danger”￿indicates￿the￿existence￿of￿a￿hazard￿that￿could￿result￿in￿death￿or￿ serious￿bodily￿injury￿if￿the￿safety￿instruction￿is￿not￿observed.￿

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WARNING:￿ “Warning”￿indicates￿the￿existence￿of￿a￿hazard￿that￿could￿result￿in￿bodily￿ injury￿if￿the￿safety￿instruction￿is￿not￿observed.￿

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CAUTION:￿ “Caution”￿indicates￿the￿existence￿of￿a￿hazard￿that￿could￿result￿in￿property￿ damage￿if￿the￿safety￿instruction￿is￿not￿observed.￿

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NOTE:￿ “Note”￿contains￿general￿information￿that￿relates￿to￿your￿safe￿maintenance￿ service.￿

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Improper￿repair￿of￿the￿computer￿may￿result￿in￿safety￿hazards.￿Toshiba￿requires￿service￿technicians￿ and￿authorized￿dealers￿or￿service￿providers￿to￿ensure￿the￿following￿safety￿precautions￿are￿adhered￿ to￿strictly.￿

Be￿sure￿to￿fasten￿screws￿securely￿with￿the￿right￿screwdriver.￿If￿a￿screw￿is￿not￿fully￿fastened,￿it￿ could￿come￿loose,￿creating￿a￿danger￿of￿a￿short￿circuit,￿which￿could￿cause￿overheating,￿ smoke￿or￿fire.￿

If￿you￿replace￿the￿battery￿pack￿or￿RTC￿battery,￿be￿sure￿to￿use￿only￿the￿same￿model￿battery￿or￿ an￿equivalent￿battery￿recommended￿by￿Toshiba.￿Installation￿of￿the￿wrong￿battery￿can￿cause￿ the￿battery￿to￿explode.￿

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Satellite￿L550/ProL550￿Series￿Maintenance￿Manual￿

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Toshiba PROL550 manual Preface, Safetyprecautions