Lenovo N200 manual Intermittent problems, Undetermined problems

Page 46

Symptom-to-FRU index

Intermittent problems

Intermittent system hang problems can be due to a variety of causes that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a problem recurs.

When analyzing an intermittent problem, do the following:

1.Run the diagnostic test for the system board in loop mode at least 10 times.

2.If no error is detected, do not replace any FRUs.

3.If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist.

Undetermined problems

If the diagnostic tests did not identify the adapter or device that has failed, if wrong devices are installed, or if the system simply is not operating, follow these procedures to isolate the failing FRU (do not isolate FRUs that have no defects).

Verify that all attached devices are supported by the computer.

Verify that the power supply being used at the time of the failure is operating correctly. (See “Power system checkout” on page 26.)

1.Turn off the computer.

2.Visually check each FRU for damage. Replace any damaged FRU.

3.Remove or disconnect all of the following devices:

a.Non-Lenovo 3000 devices

b.Devices attached to the port replicator

c.Printer, mouse, and other external devices

d.Battery pack

e.Hard disk drive

f.External diskette drive or optical drive

g.DIMM

h.Optical disk or diskette in the internal drive

i.PC Cards

4.Turn on the computer.

5.Determine whether the problem has been solved.

6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7.If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):

a.System board

b.LCD assembly

40MT 0687

Page 45 Page 47
Image 46
Page 45 Page 47
Contents Lenovo 3000 N200 Hardware Maintenance Manual Page Lenovo 3000 N200 Hardware Maintenance Manual First Edition May Copyright Lenovo 2007. All rights reserved Contents Iv MT About this manual Important service informationBefore replacing parts Strategy for replacing FRUsStrategy for replacing a hard disk drive How to use error messagesImportant notice for replacing a system board Using eSupport Using PC Entitlement Warehouse PEWUsing the HMM Important information about replacing RoHS compliant FRUs Diskette compatibility matrix Safety notices multilingual translationsSafety notice Diskette Compatibility Drive CapacitySafety notices Safety notices Safety notices Safety notices 10 MT General safety Safety informationElectrical safety 12 MT Safety inspection guide Grounding requirements Laser compliance statement 16 MT Read this first What to do firstFollowing are not covered under warranty Read this firstRelated service information Passwords Power-on passwordSelect Power-On Password*1 How to remove the power-on passwordHow to remove the hard-disk password Select Master HDPSleep standby mode Power managementScreen blank mode Hibernation modeRelated service information Creating the PC-Doctor diagnostics diskette Testing the computerCheckout guide Diagnostics Interactive Tests Hardware Info Power system checkoutDetecting system information with PC-Doctor UtilityChecking operational charging Checking the battery packChecking the ac adapter Pin Voltage V dcTerminal Voltage V dc Lenovo 3000 N200 Product overview Feature Description Product overviewIndicator Meaning Status indicatorsGreen FRU tests Fn key combinations Key combination DescriptionSymptom-to-FRU index Numeric error codesDMA test failed System board 02F6 Fail-safe timer NMI failed System boardSoftware NMI failed System board 02F7 Error messages Connected tightly and correctly No-beep symptomsMake sure that every connector is Reseat DimmSymptoms LCD-related symptomsReseat the LCD connectors LCD assemblyIntermittent problems Undetermined problemsScrew notices FRU replacement noticesRetaining serial numbers Reading or writing the ECA information Restoring the serial number of the system unitRetaining the Uuid Select 2. Read S/N data from EepromFRU replacement notices Removing and replacing a FRU Battery pack Hard disk drive slot cover Hard disk driveDimm slot cover Dimm PCI Express Mini Card for 802.11 a/b/g wireless LAN Step Screw quantity Color TorquePCI Express Mini Card for 802.11 a/b/g/n wireless LAN Optical drive Heat sink assembly slot cover Heat sink assembly 54 MT 1110 CPU For access, remove this FRU Battery pack on Middle cover and function boardM2 × 3 mm, pan-head, nylon-coated Black 392 Nm Kgfcm Keyboard When installing Keyboard bezel and fingerprint reader card Removing and replacing a FRU 62 MT Removing and replacing a FRU Backup battery Modem daughter card MDC Bluetooth daughter card BDC LCD unit 68 MT M2.5 × 6 mm, pan-head, nylon-coated Dark silver 392 Nm Kgfcm To remove the 5-1 Digital Media Reader board, do as follows To remove the ExpressCard slot, do as follows LCD front bezel Step Screw cap Screw quantity Color TorqueInverter card LCD panel, LCD cable, and hinges Remove the hinges from the LCD panel Camera and LCD rear cover assembly Wireless LAN antenna cables For the antennas with two cablesFor the antennas with three cables Locations Front view Rear view Bottom viewExternal CRUs pluggable Parts listInternal CRUs located behind an access panel External CRUs with latchesOverall FRU FRU no RoHS CRUParts list Hlds 14.1-in. Wxga TFT LCD FRUsLCD front bezel 41R7520 CMO Language RoHS ChiconyRecovery discs Recovery discs Windows Vista Home Premium 32 bit DVDsWindows Vista Home Basic 32 bit DVDs Windows Vista Business 32 bit DVDs Windows Vista Ultimate 32 bit DVDs Corel software CDs AC adaptersTools Common parts listMiscellaneous parts ToolRegion Volex RoHS Power cordsLongwell Lenovo 3000 N200 Trademarks Trademarks Part Number
Related manuals
Manual 165 pages 18.75 Kb

N200 specifications

The Lenovo N200 is a versatile laptop designed to cater to the needs of both professionals and students looking for a reliable computing solution. This model stands out in the competitive laptop market thanks to its blend of performance, durability, and affordability.

One of the main features of the Lenovo N200 is its robust build quality. Using high-quality materials, this laptop can withstand the rigors of daily use, making it an excellent choice for those who travel frequently or require a device that can handle day-to-day wear and tear. The sleek design not only gives it a modern aesthetic but also enhances portability, weighing in at an acceptable range that allows users to carry it with ease.

When it comes to performance, the Lenovo N200 typically comes equipped with Intel Core processors, providing sufficient power for multitasking and demanding applications. This makes it suitable for professional tasks, including data processing, graphic design, and even light gaming. The system’s RAM capacity generally ranges from 4GB to 8GB, which allows for smooth performance when running multiple applications simultaneously.

The display of the N200 is another noteworthy feature. It usually sports a 15.6-inch HD screen, providing crisp visuals and vibrant colors for an enjoyable viewing experience, whether you are watching videos, working on projects, or browsing the web. The anti-glare technology applied to the display also helps reduce eye strain during extended use, proving beneficial for students and professionals alike.

In terms of storage, users can expect a decent HDD or SSD option that offers enough space for documents, media, and software applications. The SSD option typically ensures faster boot-up times and quicker file access, enhancing overall system responsiveness.

Connectivity is not overlooked in the Lenovo N200, which comes with various ports, including USB, HDMI, and Ethernet, enabling users to connect their devices with ease. Wireless capabilities typically include Wi-Fi and Bluetooth, facilitating seamless connectivity to the internet and other devices.

Overall, the Lenovo N200 encapsulates the essential features and technologies that users seek in a dependable laptop. With its blend of performance, build quality, and modern features, it serves as an excellent entry-level option for those looking to balance quality with budget considerations.
Top Page Image Contents