Lenovo 3000 Fan & Heat cleaning - N100 example

[#1]

Introduction:

This article is applicable to Lenovo 3000 series and Y410 models. 

If you find that your fan is running more often or at higher speeds than it used to, or your system is running warmer than it used to, it could be a sign that the fan and heat sink could be clogged with dust or lint.  As air is drawn in from the bottom on these systems and then blow through the fins of heat sink before exiting on the left side of the system, just or lint may be drawn in more frequently if the system is frequently operated on a bed, blanket or other cloth surface, or in a dusty environment.

If your system is out of warranty and might be running warmer than normal as described above, you might clean the fan and heat sink to lower system fan speeds and operating temperature.

Description:

1. First, remove AC and battery and turn system over.  Locate the fan cover.



2. Remove the 2 screws and lift up the cover from the edge.
3. Next, remove the 3 screws marked by the arrows to remove the fan - carefully locate and uplug the fan connector from the system board as you lift it out.



4. After removing the fan, it should look like this...



5. Using a can of compressed air, blow out the area, blow the dust out of the fan.
6. Clean out the heat sink fins by blowing air through the outside vents so that the dust is blow back toward the the fan locations.  Make sure the fins are all free from lint, fibers and dust.



7. After all dust has been cleared out, carefully reinstall the fan and 3 mounting screws.  A magnetic screwdriver can make this operation easier.  Don't forget to plug the fan back in.
8. Reinstall the outside cover and screws.   Reinstall battery and AC and power up the system.

[#2]

I just saw this, however I had cleaned it myself without reading this article long time back. The guys at the lenovo service centre were asking me 2000 bucks for sorting the heating problems. I think they wanted to cheat me.

Now I have another issue, kindly help

I have the following laptop of lenovo 3000 N 100 0768A34 model

the summary of CPU  and memory

Summary
Operating System
MS Windows XP Professional 32-bit SP3
CPU
Intel Core Duo T2250 @ 1.73GHz 37 °C
Yonah 65nm Technology
RAM
512MB Single-Channel DDR2 @ 266MHz (4-4-4-11)
Motherboard
LENOVO CAPELL VALLEY(NAPA) CRB (U2E1)
Graphics
Plug and Play Monitor @ 1280x800
Mobile Intel(R) 945GM Express Chipset Family
Mobile Intel(R) 945GM Express Chipset Family
Hard Drives
78GB Hitachi HTS541080G9SA00 (SATA) 37 °C

1) Now I want to upgrade memory with another 2 gb, will it support 2gb+existing 512mb?

2) Will it speed up the laptop, it has become very very slow despite cleaning with Perfect Disc, CCCleaner, Registry Booster, Running in BOOST MODE of advanced system care, or is there any other cleaning that can be done? I had once formateed it two years back, for one year it was running very fast but then it has become slow

3) I want to purchese the following ram -  is it compatible?

Specifications of Transcend 2 GB DDR2 RAMGeneral Memory Type: 2 GB (16 x 128 MB) 667 MHz DDR2 SO-DIMM Memory Standard: DDR2-667/PC2-5300 Compatible Device: Laptop Pins: 200-pin Burst Length: 4, 8 Error Check: Non-ECC Buffered/Unbuffered: Unbuffered Model ID: JM667QSU-2G Memory Memory Clock: 166 MHz Technology: DDR2 SDRAM Memory CAS Latency: 03-03-2003 Power Specified Voltage: 1.8 V