3.29 LAN/Modem/Bluetooth/IEEE1394 Test Program .................................................. 3-70 3.30 Sound Test program................................................................................................. 3-84 3.31 SETUP ..................................................................................................................... 3-90 Chapter 4 Replacement Procedures 4.1 Overview .................................................................................................................... 4-1 4.2 Battery Pack/PC Card ................................................................................................ 4-8 4.3 Memory Module ...................................................................................................... 4-11 4.4 MDC......................................................................................................................... 4-14 4.5 HDD......................................................................................................................... 4-16 4.6 Wireless LAN Card.................................................................................................. 4-19 4.7 Cooling Fin/CPU ..................................................................................................... 4-21 4.8 Keyboard .................................................................................................................. 4-26 4.9 Switch Membrane Board ......................................................................................... 4-30 4.10 Optical Drive............................................................................................................ 4-32 4.11 Display Assembly .................................................................................................... 4-34 4.12 Sound Board............................................................................................................. 4-38 4.13 Parallel port board/Serial port board/S-Video board ............................................... 4-39 4.14 FAN.......................................................................................................................... 4-46 4.15 System Board/DC-IN Jack/RTC Battery................................................................. 4-47 4.16 PC card cover........................................................................................................... 4-50 4.17 Battery Latch............................................................................................................ 4-51 4.18 Battery Lock............................................................................................................. 4-53 4.19 Touch Pad ............................................................................................................... 4-55 4.20 LCD Unit/FL Inverter .............................................................................................. 4-57 4.21 Latch Assembly........................................................................................................ 4-61 4.22 Wireless LAN Antenna/Speaker/Hinge ................................................................... 4-62 4.23 Fluorescent Lamp ..................................................................................................... 4-71 Appendices Appendix A Handling the LCD Module ........................................................................ A-1 Appendix B Board Layout ...............................................................................................B-1 viii 534) [CONFIDENTIAL] Satellite A50S/TECRA A3X Maintenance Manual (960-