Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

Field PG M Cooling Fan stays ALWAYS ON when CPU temp is 40 degree

Created by: JY70 at: 2/21/2008 10:40 AM (50 Replies)

Rating (6)

Thanks 21

Result pages:: |; 1 | 2 | 3 | 4 | 5 |...; |

51 Entries

Entries per page: 10 | 20 | 50 | all

6/3/2011 7:32 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 12/2/2024 Posts: 10229 Rating: (1181)	zeemens Have anybody idea: 1. How to resolve problem at all ? 2. How to open hidden options in Phoenix BIOS to change fan temp limits (if there are) ? 3. Have anybody seen same situation like I did ? 1. Follow Smurf' s suggestion. 2. In case of PGs I wouldn't take a risk. EVEN SMALL CHANCES, IT IS POSSIBLE TO PERMANENTLY DAMAGE YOUR HARDWARE BY MAKING CHANGES TO EMBEDDED CONTROLLER (EC). Laptops use Embedded Controller (EC) to control the battery charging operation and perform other tasks associated with starting and stopping the laptop. EC stores the current state of devices (should WiFi be on?), current information about the system (temperature, fan speed), control battery state (should the battery be charging?) and so on. ... In Google have more info.

Suggestion To thank Quote Answer

6/3/2011 8:00 PM	Rate (0)
zeemens Experienced Member Joined: 4/13/2008 Last visit: 4/5/2021 Posts: 71 Rating: (9)	This didn't definitely means that producer failed it's BIOS setting. There could be a myriad of reasons, with Windows ACPI driver, that is easy to change. Personally I don't believe in Service Requests. Takes long time and answers mostly not satisfies at all. It must be a mass request, of many users seeing same failure, to make Siemens programmers to issue a patch. So I look for any other users.
	Z-men's room
Suggestion To thank Quote Answer

6/3/2011 8:23 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 12/2/2024 Posts: 10229 Rating: (1181)	zeemens This didn't definitely means that producer failed it's BIOS setting. ... with Windows ACPI driver, that is easy to change... OFFTOPIC! Here I agree with you. best regards, Hristo Mihalev
	Last edited by: UMENCHO at: 6/3/2011 8:25 PM
Suggestion To thank Quote Answer

6/4/2011 10:01 PM	Rate (1)
gre_m Posts: 947 Rating: (45)	Hello jacob70 My iseas^ 1. Try to incorporate technology (intel)to reduce capacity at higher temperatures - (may be in chipset tuning) 2. Dismantle the cooler, remove the old grease (thermal paste)from the cooler and the CPU 3. Apply a new layer of thermal paste on the cooler 4.proverte clamp the cooler to the CPU. Need a good contact for reductionheat resistance 5. To monitor the temperature canuse Everest. Hwinfo32 (free). 6. find utilty type (analog) softcooler and install it 7. Create a nice gap between the bottom of PG and a desk. You may want to install PG on the metal plate
gre_m Posts: 947 Rating: (45)
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users zeemens

6/5/2011 12:36 AM	Rate (0)
zeemens Experienced Member Joined: 4/13/2008 Last visit: 4/5/2021 Posts: 71 Rating: (9)	Hi gre_m, 1. What do you mean by chipset tuning ? Which particular driver ? 2,3,4,7 Good idea, but it is just a method to keep CPU few degrees down, but it probably doesn't solve fan hang-up's. 5,6 software coolers tries to reduce the CPU load, it is not necesarily useful in specialized industrial computer, needed to work in tough conditions and high operational temperature (tested from +5°C to +40°C according to manual) I am going to renew the heat exchange paste and clean vent lines inside. Anyway bainstorming is good idea in such situations. Any other suggestions ?
	Z-men's room
Suggestion To thank Quote Answer

6/5/2011 10:06 AM	Rate (0)
gre_m Posts: 947 Rating: (45)	Hello zeemens I no have field pg p4, so I suggested the BIOS settings, based on the settings of other computers, although it is possible to complete the PG and there is such a tool. By configuring the chipset and the CPU is useful to look at the intel site can search the site intel. In general, the fan better change, or at least smear. Perhaps there is a problem with the sensor speed. What about soft cooler: it lowers the CPU frequency when it is reduced load. So as the method is quite suitable. Especially for the PG, where speed reduction is tolerated. And you do not have any more tools for managing fan type speedfan or other? may be a conflict of utilities?
gre_m Posts: 947 Rating: (45)	Last edited by: gre_m at: 6/5/2011 10:10 AM
Suggestion To thank Quote Answer

6/5/2011 10:26 PM	Rate (0)
zeemens Experienced Member Joined: 4/13/2008 Last visit: 4/5/2021 Posts: 71 Rating: (9)	It seems we are 4 person club now... Club of PG-M fan problem: https://www.automation.siemens.com/tf/WW/en/Posts/39795#top So it is rather common, right? Anybody want to join us?
	Z-men's room
Suggestion To thank Quote Answer

6/7/2011 4:20 PM	Rate (0)
zeemens Experienced Member Joined: 4/13/2008 Last visit: 4/5/2021 Posts: 71 Rating: (9)	Welcome again all readers! Today, following gre_m suggestion I digged out some useful information, that can be read HERE in original, but anybody not familiar with russian better use Google translator HERE. In general one guy has burned out serial port in his FPGM and he discovered that GPIO chip LPC47N252 made by SMSC is used to control serial port and fan speed. After lecture of GPIO manual that can be found HERE some new possibilities to resolve can be seen on the horizon, but I need somebody who knows more than I how to flash it and where could be theirs settings available ex. via driver. It may be that all is just speed feedback read-out as gre_m said. Looking forward to hear from you. Alltogether "we can", as Obama used to say (offtopic joke).
	Last edited by: zeemens at: 6/8/2011 10:02 AM SpeedFan can see 3 of PWM outputs, PWM0 is really controlling fan (11 levels), PWM1 does no change, PWM2 controls brightness (8 levels). Real speed values cannot be seen. PWM0 can be controlled shortly, but every 8..12 seconds (i.e.) when you see any change on PG panel) original control overrides manual setting. Meaning SpeedFan is useless in our investigation. Last edited by: zeemens at: 6/7/2011 5:16 PM About sofware cooler, I found in SpeedFan description of this chip: It has been confirmed that SF can change fan speeds with this chip, but I still couldn''''t figure out how to access those tachometer inputs needed to report fan RPMs... Z-men's room
Suggestion To thank Quote Answer

6/9/2011 5:18 PM	Rate (0)
zeemens Experienced Member Joined: 4/13/2008 Last visit: 4/5/2021 Posts: 71 Rating: (9)	Latest news. Finally I decided to open and clean FPGM. Opening is easy, all you need it's just T9 torx screwdriver. All screws are same length. After dismantling fan Panasonic UDQF24H12-GT (2-wire!) and heatsink A3E00395300 I have cleaned it all with 95% vol. rectified spirit and cotton buds. Thermal paste after 4 years of use is dry and need to be exchanged. I have used Amasan Waermeleitpaste T12. Heatsink suspension system even with 4 springs need to be tighten to achieve good contact with CPU core cover. I have greased DC brushless fan with silicon grease for high speed bearings. Believe or not, FPGM is working on my desk 3 hours without switching fan on! Temperature is around 69 deg.C and never rises above 73 deg.C according to FPG Panel v2.1 readings (!). Comparing to previous around 82 deg.C and max at 108 deg.C it is a huge improvement. I've been sceptical to do that, but now I became a believer. It saves a lot of nerves with silence job, even if fan does not work at all... I've made some pictures from this maintenance session. In case of mass reply to this post I promise to publish an illustrated procedure how to exchange thermal paste, grease a fan axle and adjust a heatsink. It's easy. cheers, Zee
	Last edited by: zeemens at: 6/9/2011 5:20 PM Z-men's room
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users AutoGen_9577416

6/9/2011 5:33 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (999)	zeemens ... Believe or not, FPGM is working on my desk 3 hours without switching fan on! ... cheers, Zee You forgot to connect him? Joke aside, is the fan running when CPU becomes hot? What temperature for speed 1 and 2 ?
IBN-Service Posts: 8946 Rating: (999)
Suggestion To thank Quote Answer

Result pages:: |; 1 | 2 | 3 | 4 | 5 |...; |

51 Entries

Entries per page: 10 | 20 | 50 | all

|

Share this page:

Share this page on...

Follow us on