Lenovo N 500 Service Manual
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Note Before using this information and the product it supports, be sure to read the general information under “Notices” on page 113. Second Edition (May 2009) © Copyright Lenovo 2008, 2009. All rights reserved. LENOVO products, data, computer software, and services have been developed exclusively at private expense and are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights to use, reproduction and disclosure. LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered pursuant a General Services Administration ″GSA″ contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925. © 2008, 2009 Lenovo
Contents About this manual . . . . . . . . . .v Safety information . . . . . . . . . .1 General safety . . . . . . . . . . . . . .2 Electrical safety . . . . . . . . . . . . .3 Safety inspection guide . . . . . . . . . . .5 Handling devices that are sensitive to electrostatic discharge . . . . . . . . . . . . . . .6 Grounding requirements . . . . . . . . . .6 Safety notices: multilingual translations . . . . .7 Laser compliance statement . . . . . . . . .14 Important service information . . . . .17 Strategy for replacing FRUs . . . . . . . . .17 Strategy for replacing a hard disk drive . . . .18 Important notice for replacing a system board . .18 How to use error message . . . . . . . .18 Strategy for replacing FRUs for CTO, CMV, and GAV . . . . . . . . . . . . . . . . .19 Product definition . . . . . . . . . . .19 FRU identification for CTO, CMV, and GAV products . . . . . . . . . . . . . .19 Important information about replacing RoHS compliant FRUs . . . . . . . . . . . . .21 General checkout . . . . . . . . . .23 What to do first . . . . . . . . . . . . .24 Checkout guide . . . . . . . . . . . . .25 Diagnostics using PC-Doctor for DOS . . . .26 PC-Doctor for Windows . . . . . . . . .28 Power system checkout . . . . . . . . . .29 Checking the AC adapter . . . . . . . . .29 Checking operational charging . . . . . . .29 Checking the battery pack . . . . . . . .30 Related service information . . . . . .31 Restoring the factory contents by using Product Recovery discs . . . . . . . . . . . . .31 Passwords . . . . . . . . . . . . . . .32 Power-on password . . . . . . . . . .32 Hard-disk password . . . . . . . . . .32 Supervisor password . . . . . . . . . .33 How to remove the hard-disk password . . . .33 Power management . . . . . . . . . . .34 Screen blank mode . . . . . . . . . . .34 Sleep (standby) mode . . . . . . . . . .34 Hibernation mode . . . . . . . . . . .35 Symptom-to-FRU index . . . . . . . . . .36 Numeric error codes . . . . . . . . . .36 Error messages . . . . . . . . . . . .38 No-beep symptoms . . . . . . . . . . .39 LCD-related symptoms . . . . . . . . .40 Intermittent problems . . . . . . . . . .41 Undetermined problems . . . . . . . . .41 Lenovo 3000 N500 . . . . . . . . . .43 Specifications . . . . . . . . . . . . . .43 Status indicators . . . . . . . . . . . . .45 FRU tests . . . . . . . . . . . . . . .47 Fn key combinations . . . . . . . . . . .48 FRU replacement notices . . . . . . . . . .49 Screw notices . . . . . . . . . . . . .49 Retaining serial numbers . . . . . . . . .50 Removing and replacing a FRU . . . . . . . .53 1010 Battery pack . . . . . . . . . . .54 1020 Dummy cards . . . . . . . . . . .55 1030 Hard disk drive (HDD) slot cover and HDD 56 1040 Optical drive . . . . . . . . . . .58 1050 Thermal slot cover . . . . . . . . .59 1060 DIMM . . . . . . . . . . . . .60 1070 Fan assembly . . . . . . . . . . .61 1080 Heat sink assembly . . . . . . . . .63 1090 Wireless LAN card slot cover and PCI Express Mini Card for wireless LAN . . . . .65 1100 CPU . . . . . . . . . . . . . .67 111 0 Keyboard cover and power board . . . .68 1120 Bluetooth daughter card (BDC-2.1) . . . .70 1130 Keyboard . . . . . . . . . . . .71 1140 LCD unit . . . . . . . . . . . .73 1150 Keyboard bezel and LED board L . . . .76 1160 LED board R . . . . . . . . . . .79 1170 System board and ExpressCard slot assembly . . . . . . . . . . . . . .80 1180 Speakers and base cover . . . . . . .84 2010 LCD front bezel . . . . . . . . . .86 2020 Inverter card . . . . . . . . . . .87 2030 Integrated camera . . . . . . . . .88 2040 LCD panel, LCD cable, and hinges . . . .89 2050 Antenna assembly and LCD cover . . . .92 Locations . . . . . . . . . . . . . . .93 Front view . . . . . . . . . . . . . .93 Rear view . . . . . . . . . . . . . .95 Bottom view . . . . . . . . . . . . .95 Parts list . . . . . . . . . . . . . . .96 Overall . . . . . . . . . . . . . . .97 LCD FRUs . . . . . . . . . . . . . 101 Keyboard . . . . . . . . . . . . . . 103 Miscellaneous parts . . . . . . . . . . 104 AC adapters . . . . . . . . . . . . . 105 Power cords . . . . . . . . . . . . . 106 Recovery discs . . . . . . . . . . . . 107 Common service tools . . . . . . . . . 111 Notices . . . . . . . . . . . . . .113 Trademarks . . . . . . . . . . . . . .114 © Copyright Lenovo 2008, 2009 iii
About this manual This manual contains service and reference information for the following Lenovo 3000 products. Lenovo 3000 N500 MT 4233 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. Important: This manual is intended only for trained servicers who are familiar with Lenovo 3000 products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a Lenovo 3000 product, be sure to read all the information under “Safety information” on page 1 and “Important service information” on page 17. © Copyright Lenovo 2008, 2009 v
Safety information This chapter presents following safety information that you need to be familiar with before you service a Lenovo 3000 computer. v “General safety” on page 2 v “Electrical safety” on page 3 v “Safety inspection guide” on page 5 v “Handling devices that are sensitive to electrostatic discharge” on page 6 v “Grounding requirements” on page 6 v “Safety notices: multilingual translations” on page 7 v “Laser compliance statement” on page 14 © Copyright Lenovo 2008, 2009 1
General safety Follow these rules to ensure general safety: v Observe good housekeeping in the area of the machines during and after maintenance. v When lifting any heavy object: 1. Make sure that you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift. 4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you. v Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe. v Before you start the machine, make sure that other service representatives and the customer’s personnel are not in a hazardous position. v Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine. v Keep your toolcase away from walk areas so that other people will not trip over it. v Do not wear loose clothing that can be trapped in the moving parts of a machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it. v Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, about 8 centimeters (3 inches) from the end. v Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Attention: Metal objects are good electrical conductors. v Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes. v After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective. v Reinstall all covers correctly before returning the machine to the customer. v Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers. 2 Lenovo 3000 N500 Hardware Maintenance Manual