valutazioni - 3, GPA: 4.3
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Some descriptions might not apply to your particular computer. 20 ThinkPad R30/R31 HMM Read this first Before you go to the checkout guide, be sure to read this section. Important Notes: v Only certified trained personnel should service the computer. v Read the entire FRU service procedures before replacing any FRUs. v Use new nylon-coated screws when you replace FRUs. v Be extremely careful during write operations such as copying, saving, or formatting. Drives in the computer that you are servicing might have been rearranged or the drive startup sequence might have been altered. If you select an incorrect drive, data or programs could be overwritten. v Replace FRUs only for the correct model. When you replace a FRU, make sure that the model of the machine and FRU part number are correct by referring to the FRU parts list. v A FRU should not be replaced because of a single, unreproducible failure. Single failure can occur for a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software error. FRU replacement should be considered only when a recurring problem exists. In this case, clear the error log and run the test again. Do not replace FRUs if log errors do not reappear. v Be careful not to replace a non-defective FRU. What to do first The servicer must include the following in the parts exchange form or parts return form that is attached to the returned FRU: 1. Name and phone number of servicer 2. Date of service 3. Date when part failed 4. Date of purchase 5. Failure symptoms, error codes appearing on display, and beep symptoms 6. Procedure index and page number in which failing FRU was detected 7. Failing FRU name and part number 8. Machine type, model number and serial number 9. Customer’s name and address MT 2656, 2657, 2676 21 Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following: Note for Warranty: For Warranty: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. The following list provides some common items that are not covered under warranty and some symptoms that may indicate the system was subjected to stresses beyond normal use. The following is not covered under warranty: v LCD panel cracked by applying excessive force or by being dropped. v Scratched (cosmetic) parts. v Cracked or broken plastic parts, broken latches, broken pins, or broken connectors caused by excessive force. v Damage caused by liquid spilled into the system. v Damage caused by improperly inserting a PC Card or installation of an incompatible card. v Damage caused by foreign material in the FDD. v Diskette drive damage caused by pressing the diskette drive cover or inserting diskettes with multiple labels. v Damaged or bent diskette drive eject button. v CD-ROM/DVD-ROM drive damage caused by excessive force, shock, or by being dropped. v Fuses blown by attaching a nonsupported device. v Forgotten computer password (making the computer unusable). The following symptoms might indicate damage caused by non-warranted activities: v Missing parts may be a symptom of unauthorized service or modification. v HDD spindles can become noisy if subjected to excessive force or by being dropped. v I9990303 errors can be caused by exposure to strong magnetic fields. 22 ThinkPad R30/R31 HMM FRU replacement notices This section contains notices for removal and replacement. Read this section carefully before replacing any FRU. LCD replacement notice The TFT LCD for the computer contains many thin-film transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is: v XGA : 8 or more bright dots, 8 or more dark dots, or a total of 9 or more bright and dark dots. Screw notices This computer uses special nylon-coated screws with the following characteristics: v They maintain tight connections. v They do not easily come loose, even with shock or vibration. v They need additional force to tighten. v They should be used only once. Do the following when you service this machine: v Keep the screw kit (P/N 08K6560) in your tool bag. v Always use new screws if you are instructed. v Use a torque screwdriver if you have one. Loose screws can cause a reliability problem. The IBM ThinkPad computer addresses this problem with nylon-coated screws. Tighten screws as follows: v Plastic to plastic Turn an additional 90 degrees after the screw head touches the surface of the plastic part: v Logic card to plastic MT 2656, 2657, 2676 23 Turn an additional 180 degrees after the screw head touches the surface of th...
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