4 Replacement Procedures
Chapter 4 Contents
4.1 General....................................................................................................................... 4-1
4.2 Battery Pack............................................................................................................... 4-8
4.3 Optional PC Card..................................................................................................... 4-10
4.4 Optional SD Card..................................................................................................... 4-12
4.5 HDD......................................................................................................................... 4-13
4.6 Modem Daughter Card ............................................................................................ 4-17
4.7 ODD......................................................................................................................... 4-19
4.8 Cooling Fan.............................................................................................................. 4-23
4.9 CPU.......................................................................................................................... 4-26
4.10 Keyboard.................................................................................................................. 4-31
4.11 Memory Module ...................................................................................................... 4-35
4.12 Wireless LAN Card.................................................................................................. 4-37
4.13 Bluetooth.................................................................................................................. 4-40
4.14 Top Cover with Display Assembly.......................................................................... 4-42
4.15 Touch Pad ................................................................................................................ 4-45
4.16 Front Membrane ASSY ........................................................................................... 4-47
4.17 FIR Board................................................................................................................. 4-49
4.18 Sound Board............................................................................................................. 4-51
4.19 RTC Battery............................................................................................................. 4-53
4.20 DC-IN Jack .............................................................................................................. 4-55
4.21 System Board........................................................................................................... 4-56
4.22 Sub Fan .................................................................................................................... 4-58
4.23 PC Card Slot ............................................................................................................ 4-60
4.24 Speakers................................................................................................................... 4-62
4.25 Touch Pad Switch .................................................................................................... 4-64
4.26 Display Mask ........................................................................................................... 4-65
4.27 FL Inverter ............................................................................................................... 4-67
4.28 LCD Module ............................................................................................................ 4-69
4.29 Wireless LAN Antenna/Bluetooth Antenna/Display Cover.................................... 4-73
4.30 Fluorescent Lamp..................................................................................................... 4-82
Satellite A20 Maintenance Manual (960-444) 4-iii
