Toshiba EQUIUM L300D, PSLCAX/PSLCBX, SATEGO L300D manual 6Keyboard, Procedure1TestProgramCheck

2.6￿￿Keyboard￿ 2￿￿Troubleshooting￿

2.6￿ Keyboard￿

To￿check￿if￿the￿computer’s￿keyboard￿is￿defective￿or￿malfunctioning,￿follow￿the￿ troubleshooting￿procedures￿below￿as￿instructed.￿

￿

Procedure￿1￿￿Test￿Program￿Check￿

Procedure￿2￿￿Connector￿Check￿and￿Replacement￿Check￿

￿

Procedure￿1￿￿Test￿Program￿Check￿

￿

Execute￿the￿Keyboard￿test￿available￿as￿part￿of￿the￿maintenance￿test￿program.￿￿See￿Chapter￿3￿ for￿information￿on￿how￿to￿perform￿the￿test.￿ If￿an￿error￿is￿detected￿in￿the￿test,￿go￿to￿Procedure￿2.￿￿If￿no￿error￿is￿detected,￿the￿keyboard￿ itself￿is￿normal.￿

Procedure￿2￿￿Connector￿Check￿and￿Replacement￿Check￿

￿

The￿keyboard￿or￿system￿board￿may￿be￿disconnected￿or￿faulty.￿￿Disassemble￿the￿computer￿ following￿the￿steps￿described￿in￿Chapter￿4￿and￿perform￿the￿following￿checks:￿

￿

Check￿1￿ Make￿sure￿the￿keyboard￿cable￿has￿been￿firmly￿connected￿to￿the￿system￿ board.￿

Keyboard

￿

System￿board

CPU

￿

￿If￿the￿cable￿is￿loose￿or￿off,￿reconnect￿it￿firmly￿and￿return￿to￿Procedure￿1.￿￿ If￿there￿is￿still￿an￿error,￿perform￿Check￿2.￿

￿

Check￿2￿ The￿keyboard￿may￿be￿faulty.￿￿Replace￿it￿with￿a￿new￿one￿following￿the￿ instructions￿in￿Chapter￿4.￿￿If￿the￿problem￿persists,￿perform￿Check￿3.￿

￿

Check￿3￿ The￿System￿board￿may￿be￿faulty.￿￿Replace￿it￿with￿a￿new￿one￿following￿the￿ instructions￿in￿Chapter￿4.￿￿If￿the￿keyboard￿is￿still￿not￿functioning￿properly,￿ perform￿Check￿4.￿

Check￿4￿ The￿memory￿may￿be￿defective.￿Replace￿the￿memory￿module￿with￿a￿new￿ one￿following￿the￿steps￿described￿in￿Chapter￿4.￿If￿the￿problem￿persists,￿ perform￿Check￿5.￿

￿

Check￿5￿ The￿CPU￿may￿be￿faulty.￿Disassemble￿the￿computer￿following￿the￿steps￿ described￿in￿Chapter￿4￿and￿replace￿the￿CPU￿with￿a￿new￿one.￿

Satellite￿L300D/L305D/Satellite￿Pro￿L300D/EQUIUM￿L300D/SATEGO￿L300D￿￿￿￿￿Maintenance￿Manual￿ 2-15￿