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Contents About this manual ... 1 Introduction ... 3 Important service information ... 3 Strategy for replacing FRUs ... 3 How to use error messages ... 4 Diskette compatibility matrix ... 4 Safety notices: multilingual translations ... 4 Safety information ... 16 General safety ... 16 Electrical safety ... 17 Safety inspection guide ... 18 Handling devices that are sensitive to electorostatic discharge ... 19 Grounding requirements ... 20 Laser compliance statement ... 21 General descriptions ... 25 Read this first ... 25 What to do first ... 25 Related service information ... 27 Service web site ... 27 Restoring the preloaded system ... 27 Passwords ... 30 Power management ... 32 Checkout guide ... 36 Testing the computer ... 38 Power system checkout ... 39 ThinkPad A30, A30p, A31, A31p ... 43 Product overview ... 45 Specifications ... 45 Status indicators ... 48 FRU Tests ... 50 Fn key combinations ... 51 Symptom-to-FRU index ... 53 Numeric error codes ... 53 Error messages ... 56 Beep symptoms ... 57 LCD-related symptoms ... 58 Intermittent problems ... 59 Undetermined problems ... 59 FRU replacement notices ... 60 Screw notices ... 60 Retaining serial numbers ... 61 Removing and replacing a FRU ... 63 1010 Battery pack ... 64 1020 Mini PCI adapter ... 68 1040 Backup battery ... 75 1050 DIMM ... 76 1060 Hard-disk drive ... 77 1070 Ultrabay Plus device ... 79 1080 Ultrabay 2000 device ... 80 1090 I/O plate ... 81 1100 Keyboard ... 82 1110 Keyboard CRU insulator ... 87 1120 Keyboard bezel ... 89 1130 Hinge cover ... 93 1140 Fan assembly ... 94 1150CPU ... 96 1160 Ultrabay Plus slot ... 98 1170 Ultrabay 2000 slot ... 103 1180 Sub card for PC Card slot ... 107 1190 Security chip ... 109 1200 LCD assembly ... 110 1210 System board ... 114 1220 Ultrabay LED card ... 120 1230 Speaker assembly ... 121 1240 Antenna for Bluetooth ... 123 2010 Front bezel ... 125 2020 Inverter card ... 127 2030 LCD panel ... 129 2040 Antenna assembly ... 133 3010 ThinkPad Dock PCI cover ... 137 3020 ThinkPad Dock top cover ... 139 Locations ... 144 Front view ... 144 Rear view ... 146 Bottom view ... 147 Parts list ... 148 A30 and A30p series model matrix ... 148 A31 and A31p series model matrix ... 149 Overall ... 155 LCD FRUs ... 169 Keyboard ... 172 Recovery CDs ... 173 Optional FRUs ... 179 Miscellaneous parts ... 180 AC adapters ... 183 Common parts list ... 184 Notices ... 186 Trademarks ... 186 This manual contains service and reference information for IBM ThinkPad A30 A30p, A31, A31p (MT2652, 2653, 2654), and ThinkPad Dock (MT2631) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems. The manual is divided into sections as follows: v The common sections provide general information, guidelines, and safety information required in servicing computers. v The product-specific section includes service, reference, and product-specific parts information.