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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Win 7 PC shows status of toner.
Yellow has triggered a warning message since it and only it has gone below 10% remaining. Yellow shows 9%. Others are much higher percentage available. All cartridges are Samsung brand. However, I cannot get the printer to print anything. It keeps flashing the toner low message and not allowing me to print. I did take out and shake the yellow toner and restarted several times but no luck clearing the problem to allow me to print. Suggestion please. Thanks ! |
#2
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On Sun, 11 Aug 2019 11:52:29 -0700, GeeG wrote:
Win 7 PC shows status of toner. Yellow has triggered a warning message since it and only it has gone below 10% remaining. Yellow shows 9%. Others are much higher percentage available. All cartridges are Samsung brand. However, I cannot get the printer to print anything. It keeps flashing the toner low message and not allowing me to print. I did take out and shake the yellow toner and restarted several times but no luck clearing the problem to allow me to print. Methinks you can disable the toner low warning "feature" with the well hidden "tech menu": "Samsung Xpress C460W hidden menus & reset those warnings" https://www.youtube.com/watch?v=0ErCyT0SA9w Or, maybe try this: https://www.manualslib.com/manual/564345/Samsung-Sl-C460fw.html?page=87 -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#3
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On 8/11/19 1:52 PM, GeeG wrote:
Win 7 PC shows status of toner. Yellow has triggered a warning message since it and only it has gone below 10% remaining.Â* Yellow shows 9%.Â* Others are much higher percentage available. All cartridges are Samsung brand. However, I cannot get the printer to print anything. It keeps flashing the toner low message and not allowing me to print. I did take out and shake the yellow toner and restarted several times but no luck clearing the problem to allow me to print. Suggestion please. Thanks ! Obviously, buy new toner. Ever wonder where the yellow ink and toner goes? Every page you print uses yellow to print all the information it has about who and where you are. And no, it won't print if it can't rat you out. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
#4
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On Sun, 11 Aug 2019 18:15:56 -0500, Fox's Mercantile
wrote: Obviously, buy new toner. Ever wonder where the yellow ink and toner goes? Every page you print uses yellow to print all the information it has about who and where you are. And no, it won't print if it can't rat you out. Well, lets see if that works as you claim. Every page is marked with up to a maximum of 512 dots. Most MIC codes are less than half of the 512 dots, but I'll use the maximum number for this exercise. Each dot is 0.1mm in diameter or 0.05mm radius. Therefore, the maximum coverage in yellow toner is: Pi * r^2 * number_of_dots = Total_area 3.14 * 0.05^2 * 512 = 4 sq-mm If all the 512 dots were arranged in a non-overlapping staggered grid pattern, that would produce a 2mm x 2mm yellow square. That's a really tiny area which would hardly affect yellow toner consumption. Machine Identification Code https://en.wikipedia.org/wiki/Machine_Identification_Code -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#5
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On Sun, 11 Aug 2019 16:42:29 -0700, Jeff Liebermann
wrote: On Sun, 11 Aug 2019 18:15:56 -0500, Fox's Mercantile wrote: Obviously, buy new toner. Ever wonder where the yellow ink and toner goes? Every page you print uses yellow to print all the information it has about who and where you are. And no, it won't print if it can't rat you out. Well, lets see if that works as you claim. Every page is marked with up to a maximum of 512 dots. Most MIC codes are less than half of the 512 dots, but I'll use the maximum number for this exercise. Each dot is 0.1mm in diameter or 0.05mm radius. Therefore, the maximum coverage in yellow toner is: Pi * r^2 * number_of_dots = Total_area 3.14 * 0.05^2 * 512 = 4 sq-mm If all the 512 dots were arranged in a non-overlapping staggered grid pattern, that would produce a 2mm x 2mm yellow square. That's a really tiny area which would hardly affect yellow toner consumption. Machine Identification Code https://en.wikipedia.org/wiki/Machine_Identification_Code Oops. I forgot to multiply by the number of times the pattern is repeated on a page. My count is 120 times for letter size paper. That would cover 480 sq-mm or 22mm x 22mm square (0.87 x 0.87 inches) maximum (if every possible dot in the pattern was printed). That's much more toner consumption than I originally estimated and would consume more yellow toner than the other colors (except maybe black). I recently inherited from a customer an HP LaserJet Pro m477fnw color laser printer: https://www.amazon.com/HP-Color-LaserJet-M477fnw-Renewed/dp/B01N5XP9TL/ Quite good, but this particular model doesn't do double sided printing. When I picked up the printer, the yellow toner level was well below the other colors. The dots are visible with a microscope and UV illumination. Grumble... -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#6
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In Jeff Liebermann writes:
[snip] Machine Identification Code https://en.wikipedia.org/wiki/Machine_Identification_Code I recently inherited from a customer an HP LaserJet Pro m477fnw color laser printer: https://www.amazon.com/HP-Color-LaserJet-M477fnw-Renewed/dp/B01N5XP9TL/ Quite good, but this particular model doesn't do double sided printing. When I picked up the printer, the yellow toner level was well below the other colors. The dots are visible with a microscope and UV illumination. Grumble... Periodically, the great folk (overworked, understaffed...) at the EFF do things like: https://www.eff.org/pages/list-print...-tracking-dots -- __________________________________________________ ___ Knowledge may be power, but communications is the key [to foil spammers, my address has been double rot-13 encoded] |
#7
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On Sat, 17 Aug 2019 17:24:44 +0000 (UTC), danny burstein
wrote: In Jeff Liebermann writes: [snip] Machine Identification Code https://en.wikipedia.org/wiki/Machine_Identification_Code I recently inherited from a customer an HP LaserJet Pro m477fnw color laser printer: https://www.amazon.com/HP-Color-LaserJet-M477fnw-Renewed/dp/B01N5XP9TL/ Quite good, but this particular model doesn't do double sided printing. When I picked up the printer, the yellow toner level was well below the other colors. The dots are visible with a microscope and UV illumination. Grumble... Periodically, the great folk (overworked, understaffed...) at the EFF do things like: https://www.eff.org/pages/list-print...-tracking-dots More from the EFF: https://www.eff.org/issues/printers The encoding seems to be different for different manufacturers. After about 14 years, only the Xerox codes seem to have been fully decoded: https://www.techdirt.com/articles/20180626/09114540109/researchers-reveal-details-printer-tracking-dots-develop-free-software-to-defeat-it.shtml https://www.researchgate.net/publication/325976319_Reverse_Engineering_the_Machine_Identifi cation_Code https://dfd.inf.tu-dresden.de https://blog.erratasec.com/2017/06/how-intercept-outed-reality-winner.html#.XVhP3kd7laS -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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