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About this manual This manual contains service and reference information for ThinkPad® R50e series (MT 1834, 1842, 2670), R51e series (MT 1843, 1844, 1845), R52 series (MT 1846, 1847, 1848, 1850, 1858, 1859, 1860, 1861, 1862, 1863, 1870), and ThinkPad Dock II (MT2877) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems. Note MT 1850, 1862, 1863, and 1870 are special bids. For information on how to locate service parts, refer to “Strategy for replacing FRUs for CTO, CMV, and GAV” on page 4. 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. Important This manual is intended for trained service personnel who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkPad product, be sure to review the safety information under “Safety notices: multilingual translations” on page 8, “Safety information” on page 20, and “Laser compliance statement” on page 26. Contents About this manual ... 1 Introduction ... 3 Important service information ... 3 Strategy for replacing FRUs ... 3 Strategy for replacing a Hard disk drive ... 4 How to use error messages ... 4 Strategy for replacing FRUs for CTO, CMV, and GAV 4 Product definition ... 4 FRU identification for CTO, CMV, and GAV products 5 Important information about replacing RoHS compliant FRUs ... 7 Diskette compatibility matrix ... 8 Safety notices: multilingual translations ... 8 Safety information ... 20 General safety ... 20 Electrical safety ... 21 Safety inspection guide ... 23 Handling devices that are sensitive to electrostatic discharge ... 24 Grounding requirements ... 25 Laser compliance statement ... 26 General descriptions ... 29 Read this first ... 29 What to do first ... 29 Related service information ... 31 Service Web site ... 31 Restoring the pre-installed system ... 31 Passwords ... 32 Power management ... 35 Checkout guide ... 38 Testing the computer ... 41 Power system checkout ... 41 ThinkPad R50e, R51e and R52 Series ... 45 Product overview ... 47 Specifications ... 47 Status indicators ... 54 FRU tests ... 57 Fn key combinations ... 59 Symptom-to-FRU index ... 62 Numeric error codes ... 62 Error messages ... 67 Beep symptoms ... 68 No-beep symptoms ... 68 LCD-related symptoms ... 69 Intermittent problems ... 70 Undetermined problems ... 70 FRU replacement notices ... 71 Screw notices ... 71 Retaining serial numbers ... 72 Removing and replacing a FRU ... 75 1010 Battery pack ... 76 1020 Ultrabay Enhanced device (for R52 series) 77 1030 Hard disk drive ... 79 1040 DIMM (optional) ... 81 1050 Keyboard ... 82 1060 Ultrabay device (for R50e series) ... 86 1070 DIMM (standard) ... 87 1080 Modem daughter card (MDC-2) ... 88 1090 Bluetooth/Modem daughter card (BMDC-3) (for R52 series) ... 90 1100 Keyboard bezel ... 92 1110 Touch pad and Fingerprint reader (for R52 series) ... 96 1120 Mini PCI adapter ... 99 1130 Fan assembly ... 103 1140 CPU ... 104 1150 Backup battery ... 105 1160 Speaker assembly ... 106 1170 IEEE 1394 (for R52 series) ... 108 1180 PC Card slot assembly ... 111 1190 Ultrabay Enhanced shield kit ... 114 1200 LCD assembly ... 121 1210 VGA and Ultrabay Enhanced device eject button cable ... 125 1220 System board, interposer card, and base cover ... 128 2010 LCD front bezel ... 135 2020 Inverter card ... 137 2030 LCD panel, LCD cable assembly, wireless LAN antenna assembly, hinges, and LCD cover . 138 3010 ThinkPad Dock II PCI cover ... 149 3020 ThinkPad Dock II top cover ... 150 Locations ... 153 Front view (for R50e) ... 153 Rear view (for R50e) ... 154 Bottom view (for R50e) ... 155 Front view (for R52) ... 156 Rear view (for R52) ... 158 Bottom view (for R52) ... 159 Parts list ... 160 Overall ... 160 LCD FRUs ... 220 AC adapters ... 240 Keyboard ... 241 Recovery CDs ... 243 Miscellaneous parts ... 253 Optional FRUs ... 259 Common parts list ... 260 Notices ... 263 Trademarks ... 265