IBM MT2668, MT2669, MT2678, MT2679, MT2686, MT2687, MT2877, T43P Grounding requirements

– Use the round ground prong of the ac plug on

ac-operated computers.

Grounding requirements

Electrical grounding of the computer is required for

operator safety and correct system function. Proper

grounding of the electrical outlet can be verified by a

certified electrician.

Safety information

Introduction 25

Contents

Main ThinkPad Computer Hardware Maintenance Manual 2686/2687 Page Contents Lenovo 2005. Portions IBM Corp. 2005. iii iv Contents v Page About this manual Lenovo 2005. Portions IBM Corp. 2005. 1 Page Introduction Important service information Lenovo 2005. Portions IBM Corp. 2005. 3 Strategy for replacing FRUs Strategy for replacing a hard disk drive Always try to run a low-level format before replacing a hard disk drive. 4 How to use error messages Strategy for replacing FRUs for CTO, CMV, and GAV Product definition FRU identification for CTO, CMV, and GAV products Introduction 5 Using PEW Using eSupport Using the HMM 6 Important information about replacing RoHS compliant FRUs Introduction 7 Products marketed before June 2006 Products marketed after June 2006 Current or original part drive Diskette compatibility matrix 8 Diskette capacity Safety notices: multilingual translations Important service information Safety notice 1 Introduction 9 Safety notice 2 10 (continuation of safety notice 2) Introduction Safety notice 3 12 (continued) Introduction 13 Safety notice 4 14 (continuation of safety notice 4) Introduction 15 Safety notice 5 16 Safety notice 6 Introduction 17 Safety notice 7 18 Safety notice 8 Introduction 19 Safety information 20 General safety Introduction 21 Electrical safety Observe the following rules when working on electrical equipment. 22 Safety inspection guide Introduction 23 Handling devices that are sensitive to electrostatic discharge 24 Use the round ground prong of the ac plug on ac-operated computers. Grounding requirements Introduction 25 Laser compliance statement 26 CAUTION: Introduction 27 28 General descriptions The desciptions in this chapter apply to any ThinkPad model that has the PC-Doctor Lenovo 2005. Portions IBM Corp. 2005. 29 program. Some descriptions might not apply to your particular computer. Read this first 30 Read this first Related service information This section provides information about the following: v Service Web site v v v General descriptions 31 Service Web site Restoring the pre-installed system Passwords 32 General descriptions 33 How to remove the power-on password How to remove the hard-disk password 34 Power management General descriptions 35 Screen blank mode Standby mode Hibernation mode 36 General descriptions 37 Checkout guide 38 Testing the computer Creating the PC-Doctor diagnostics diskette General descriptions 39 40 Detecting system information with PC-Doctor Hardware Info Utility Power system checkout 42 (16-10V) Checking the ac adapter Pin Voltage (V dc) 1 +15.5 to +17.0 2 Ground Checking operational charging General descriptions 43 1(+) 5(-) Checking the battery pack Checking the backup battery 44 Red (+) Black (-) Wire Voltage (V dc) Red +2.5 to +3.2 Black Ground v v v replacement, replace the system board. ThinkPad T43/T43p Series Lenovo 2005. Portions IBM Corp. 2005. 45 46 Product overview This section presents the following product-unique information: v v v v ThinkPad T43/T43p Series 47 (continued) Specifications 48 ThinkPad T43/T43p Series 49 Status indicators The system status indicators show the status of the computer, as follows: 50 Indicator Meaning 1 Ultrabay Slim status (continued) ThinkPad T43/T43p Series 51 Product overview Indicator Meaning 5 Drive in use 52 R Product overview FRU tests The following table shows the test for each FRU. ThinkPad T43/T43p Series 53 (continued) Product overview 54 Product overview Fn key combinations ThinkPad T43/T43p Series 55 (continued) combination Product overview 56 Product overview Key combination ThinkPad T43/T43p Series 57 Product overview Symptom-to-FRU index 58 Numeric error codes 0175 Bad CRC1, stop POST taskThe EEPROM checksum is not correct. System board. 0176 System SecurityThe system has been tampered with. ThinkPad T43/T43p Series 59 60 ThinkPad T43/T43p Series 61 62 Symptom-to-FRU index Error messages ThinkPad T43/T43p Series 63 Beep symptoms No-beep symptoms 64 LCD-related symptoms ThinkPad T43/T43p Series 65 No beep, power-on indicator on, and a blank LCD during POST. System board. v v v adjusted. v adjusted. 1. Reseat the LCD connectors. 2. LCD assembly. 3. System board. v v v v Intermittent problems 66 Undetermined problems FRU replacement notices ThinkPad T43/T43p Series 67 (Cross-section) Screw notices 90degrees more Retaining serial numbers This section includes the following descriptions: v v v 68 Restoring the serial number of the system unit Retaining the UUID ThinkPad T43/T43p Series 69 Reading or writing the ECA information 70 Removing and replacing a FRU ThinkPad T43/T43p Series 71 1010 Battery pack (14.1-in. LCD models) (continued) 72 ThinkPad T43/T43p Series 73 a b 1020 Battery pack (15.0-in. LCD models) 74 1030 Ultrabay Slim device ThinkPad T43/T43p Series 75 1040 Hard disk drive 76 (continued) v Note: Page 1050 DIMM (optional) 78 ThinkPad T43/T43p Series 79 1060 Keyboard For access, remove this FRU: v 80 (continued) 1 3 (continued) ThinkPad T43/T43p Series 81 82 When installing: 1. Attach the connector 1. ThinkPad T43/T43p Series 83 (continued) 84 b b 1070 DIMM (standard) For access, remove these FRUs in order: v v ThinkPad T43/T43p Series 85 1080 Modem daughter card (MDC-2) For access, remove these FRUs in order: v v 86 Turn the card over 3 , and detach the modem connector 4. ThinkPad T43/T43p Series 87 1090 Bluetooth /Modem daughter card (BMDC-3) For access, remove these FRUs in order: v v 88 ThinkPad T43/T43p Series 89 1100 Palm rest or Palm rest with fingerprint reader (14.1-in. LCD models) For access, remove these FRUs in order: v v 90 3a 3 11 1 1 (continued) 2 ThinkPad T43/T43p Series 91 92 When installing: sure that connector 4 is firmly attached. 1110 Keyboard bezel or Keyboard bezel with fingerprint reader (15.0-in. LCD models) For access, remove these FRUs in order: v v ThinkPad T43/T43p Series 93 (continued) 1 1 94 M2 14 mm, bind-head, nylon-coated (6) Removing and replacing a FRU ThinkPad T43/T43p Series 95 (continued) 96 3. Attach the touch pad connector 4. (continued) 5. Attach the keyboard. (continued) ThinkPad T43/T43p Series 97 98 1120 Mini PCI adapter ThinkPad T43/T43p Series 99 (continued) 100 1130 Fan assembly ThinkPad T43/T43p Series 101 (continued) 102 2 a (continued) ThinkPad T43/T43p Series 103 104 1140 Backup battery ThinkPad T43/T43p Series 105 (continued) 106 1150 Speaker assembly ThinkPad T43/T43p Series 107 (continued) 1a 1b Step Screw (quantity) Color Torque 1a M2 10 mm, flat-head, nylon-coated (2) 108 1160 Keyboard bezel (14.1-in. LCD models) For access, remove these FRUs in order: v v v v ThinkPad T43/T43p Series 109 (continued) 1 M2 19 mm, bind-head, nylon-coated (2) 110 1170 PC Card/ExpressCard slots (14.1-in. LCD models) ThinkPad T43/T43p Series (continued) 1 M2 4 mm, bind-head, nylon-coated (2) Removing and replacing a FRU 112 1180 PC Card/ExpressCard slots (15.0-in. LCD models) ThinkPad T43/T43p Series (continued) 1 M2 5 mm, flat-head, nylon-coated (2) Removing and replacing a FRU 114 1190 LCD assembly (14.1-in. LCD models) ThinkPad T43/T43p Series (continued) 1 M2.5 4.8 mm, bind-head, nylon-coated (4) Removing and replacing a FRU 116 Removing and replacing a FRU Step Screw (quantity) Color Torque 5 M2 10 mm, flat-head, nylon-coated (1) (continued) Removing and replacing a FRU ThinkPad T43/T43p Series Release the antenna cables from the cable guide 6 . 118 When installing: correctly routed and securely in place. (continued) ThinkPad T43/T43p Series 1200 LCD assembly (15.0-in. LCD models) 120 Step Screw (quantity) Color Torque 2 M2 12 mm, flat-head, nylon-coated (1) Removing and replacing a FRU ThinkPad T43/T43p Series 121 122 Release the antenna cables from the cable guide 5 . When installing: correctly routed and securely in place. (continued) ThinkPad T43/T43p Series 123 124 1210 CPU ThinkPad T43/T43p Series 125 b a 1220 Ultrabay Slim guide rail assembly (14.1-in. LCD models) 126 (continued) 1 M2 14 mm, bind-head, nylon-coated (1) (2.0 kgfcm) 2 M2 4 mm, bind-head, nylon-coated (1) ThinkPad T43/T43p Series 127 1230 Ultrabay Slim guide rail assembly (15.0-in. LCD models) 1 M2 5 mm, flat-head, nylon-coated (2) 128 (2.0 kgfcm) 2 M2 14 mm, bind-head, nylon-coated (1) Removing and replacing a FRU ThinkPad T43/T43p Series 129 130 1240 VGA and Ultrabay Slim device eject button cable ThinkPad T43/T43p Series 131 (continued) 2 Hex stud (2) Silver 0.392 Nm Removing and replacing a FRU 132 When installing: Make sure that the connector 1 is firmly attached. Removing and replacing a FRU 1250 System board and base cover (14.1-in. LCD models) 134 computer while the test is running. ThinkPad T43/T43p Series 135 136 When installing: Make sure that the connectors 2 are firmly attached to the system board. (continued) 4 M2 10 mm, flat-head, nylon-coated (1) (2.5 kgfcm) 5 M2.5 4 mm, bind-head, nylon-coated (1) ThinkPad T43/T43p Series 137 138 Gold 0.392 Nm Removing and replacing a FRU b ThinkPad T43/T43p Series 139 b a 1260 System board, interposer card, and base cover (15.0-in. LCD models) 140 ThinkPad T43/T43p Series 141 142 Remove the support structure a and the EMI bracket b. 3 ThinkPad T43/T43p Series 143 (continued) a 144 4 c Step Screw (quantity) Color Torque 4 M2 10 mm, flat-head, nylon-coated (1) (2.5 kgfcm) 5 M2.5 4.8 mm, bind-head, nylon-coated (1) e Step Screw (quantity) Color Torque 8 M2 4 mm, bind-head, nylon-coated (3) ThinkPad T43/T43p Series 145 Removing and replacing a FRU 10 f g 12 13 146 Gold 0.392 Nm Removing and replacing a FRU b ThinkPad T43/T43p Series 147 b a 2010 LCD front bezel (14.1-in. LCD models) cap 148 Screw (quantity) Color Torque 1 M2 3 mm, pan-head, nylon-coated (2) ThinkPad T43/T43p Series 149 2020 LCD front bezel (15.0-in. LCD models) cap 150 Screw (quantity) Color Torque 1 M2 4 mm, bind-head, nylon-coated (4) Page 2030 Inverter card (14.1-in. LCD models) 152 1 M2 3 mm, small-head, nylon-coated (1) When installing: Make sure that connectors 2 and 3 are firmly attached. Removing and replacing a FRU Cable routing: the connector cable as in this figure: ThinkPad T43/T43p Series 153 2040 Inverter card (15.0-in. LCD models) 154 Page Peel the tape securing the Bluetooth wireless antenna assembly 3 . 156 4 M2 2.7 mm, small-head, nylon-coated (2) (continued) Yellow 0.245 Nm Removing and replacing a FRU In step 6 , remove the latch bar as in this figure. ThinkPad T43/T43p Series 157 (continued) Step Screw (quantity) Color Torque 9 M2 3 mm, small-head, nylon-coated (1) 158 Removing and replacing a FRU 14 ThinkPad T43/T43p Series 159 (continued) 13 10a 160 15 (continued) 16 17 17 19 (continued) ThinkPad T43/T43p Series 161 Remove the right latch from the LCD cover. 162 When installing: reassemble the LCD unit. 1. Attach the left latch to the LCD cover. (continued) ThinkPad T43/T43p Series 163 164 95.5 mm 68.5 mm 41.5 mm 6. Route the wireless LAN antenna cables as in the following drawings: a. (continued) ThinkPad T43/T43p Series 165 166 d. Coil the spiral tube round the antenna cables 6. e. Slide the spiral tube in the direction shown by arrow 7. ThinkPad T43/T43p Series 167 (continued) 168 8a ThinkPad T43/T43p Series 169 (continued) 1 M2 4 mm, bind-head, nylon-coated (7) Removing and replacing a FRU 170 (continued) 6 6 (continued) 6b 67 7 ThinkPad T43/T43p Series 171 b Step Screw (quantity) Color Torque 6 M2 3 mm, bind-head, nylon-coated (4) 172 When installing: firmly attached to the LCD panel. (continued) 9 11 10b 12 9 d ThinkPad T43/T43p Series 173 10a 9 M2 4 mm, bind-head, nylon-coated (2) 174 (continued) ThinkPad T43/T43p Series 175 3010 ThinkPad Dock II PCI cover (Bottom view) 176 3020 ThinkPad Dock II top cover (Rear view) ThinkPad T43/T43p Series 177 (continued) (Bottom view) 178 (continued) ThinkPad T43/T43p Series 179 Locations Front view 180 ThinkPad T43/T43p Series 181 Rear view 182 3 4 5 Bottom view ThinkPad T43/T43p Series 183 Locations Parts list 184 Overall a b f c d e 186 (continued) ThinkPad T43/T43p Series 187 188 (continued) 39T2505 * ThinkPad T43/T43p Series 189 39T2529 * Parts list 190 (continued) ThinkPad T43/T43p Series 191 192 (continued) ThinkPad T43/T43p Series 193 194 (continued) ThinkPad T43/T43p Series 195 196 (continued) ThinkPad T43/T43p Series 197 198 (continued) 26R8412 N ThinkPad T43/T43p Series 199 26R9098 N 26R9091 200 (continued) ThinkPad T43/T43p Series 201 202 (continued) ThinkPad T43/T43p Series 203 204 27K9932 ** (*1) 39T0079 ** (*1) 27K9934 ** (*1) Parts list (continued) 93P4235 ** (*1) ThinkPad T43/T43p Series 205 Parts list 206 27K9936 ** (*1) 39T0389 ** (*1) Parts list (continued) 27K9938 ** (*1) ThinkPad T43/T43p Series 207 39T0393 ** (*1) 27K9942 ** (*1) 208 39T0391 ** (*1) 27K9940 ** (*1) 39T0355 ** (*1) Parts list (continued) ThinkPad T43/T43p Series 209 210 39T0476 N 39T0479 N 39T5636 N Parts list (continued) ThinkPad T43/T43p Series 211 212 (continued) ThinkPad T43/T43p Series 213 214 14.1-in. LCD FRUs 14.1-in. XGA TFT 216 (continued) ThinkPad T43/T43p Series 217 218 14.1-in. SXGA+ TFT (continued) ThinkPad T43/T43p Series 219 220 ThinkPad T43/T43p Series 221 15.0-in. LCD FRUs 222 15.0-in. XGA TFT (continued) ThinkPad T43/T43p Series 223 224 15.0-in. SXGA+ IPS TFT (continued) ThinkPad T43/T43p Series 225 226 ThinkPad T43/T43p Series 227 15.0-in. UXGA IPS TFT 228 (continued) ThinkPad T43/T43p Series 229 230 Keyboard Keyboards for 15.0-in. LCD models R ThinkPad T43/T43p Series 231 Keyboards for 14.1-in. LCD models R 232 Recovery CDs Windows XP Professional ThinkPad T43/T43p Series 233 v FNx, FPx, FQx, FRx, Jxx, Kxx, Lxx, Pxx, Qxx v CTx, Kxx, Pxx, Qxx v 234 Windows XP Home Edition (for custom model) ThinkPad T43/T43p Series 235 Miscellaneous parts 236 (continued) ThinkPad T43/T43p Series 237 238 AC adapters ThinkPad T43/T43p Series 239 Optional FRUs ID Hard disk drive, 80 GB, 9.5 mm, 4200 rpm, IBM STD 240 02K7086 * AC adapter (2 pin, 120 W), LITEON for ThinkPad Mini Dock 02K7092 * AC adapter (3 pin, 120 W), LITEON for ThinkPad Mini Dock Common parts list Tools ThinkPad T43/T43p Series 241 Parts list Power cords (system) 242 For 3-pin power cords: Power cords (ThinkPad Dock II) ThinkPad T43/T43p Series 243 Parts list Notices 244 Notices Notices ThinkPad T43/T43p Series 245 Trademarks 246

IBM Grounding requirements

Models: MT2668 MT2669 MT2678 MT2679 MT2686 MT2687 MT2877 T43P

– Use the round ground prong of the ac plug on

ac-operated computers.

Introduction 25