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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
Posted to aus.electronics,sci.electronics.repair
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Drive gear for Sharp CD mech
I need the drive gear for the sled motor for a Sharp H8134AF laser
assembly out of a GX-CD555Z(GY) portable 3-in-1 unit. Its dimensions are 6mm high, 4.5mm OD, 2mm shaft dia (suits RF-310T-11400 motor). It has 11 teeth. TIA for any assistance. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
#2
Posted to aus.electronics,sci.electronics.repair
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Drive gear for Sharp CD mech
"Franc Zabkar" wrote in message ... I need the drive gear for the sled motor for a Sharp H8134AF laser assembly out of a GX-CD555Z(GY) portable 3-in-1 unit. Its dimensions are 6mm high, 4.5mm OD, 2mm shaft dia (suits RF-310T-11400 motor). It has 11 teeth. TIA for any assistance. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. Franc I have stolen gears from many different mechs to replace ones that have split in the position where you've got the bad one. Some have 13 teeth, but they appear to run just as well with no tightness or tooth misalignment. If you have a scrap DVD deck in your junk box, there's a good chance that the sled drive pinion will do the job. If the one you find has a lip around the bottom edge, it can simply be put on the shaft the other way up. Good luck ! Arfa |
#3
Posted to aus.electronics,sci.electronics.repair
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Drive gear for Sharp CD mech
On Thu, 03 Aug 2006 00:38:15 GMT, "Arfa Daily"
put finger to keyboard and composed: "Franc Zabkar" wrote in message .. . I need the drive gear for the sled motor for a Sharp H8134AF laser assembly out of a GX-CD555Z(GY) portable 3-in-1 unit. Its dimensions are 6mm high, 4.5mm OD, 2mm shaft dia (suits RF-310T-11400 motor). It has 11 teeth. TIA for any assistance. - Franc Zabkar Franc I have stolen gears from many different mechs to replace ones that have split in the position where you've got the bad one. Some have 13 teeth, but they appear to run just as well with no tightness or tooth misalignment. If you have a scrap DVD deck in your junk box, there's a good chance that the sled drive pinion will do the job. If the one you find has a lip around the bottom edge, it can simply be put on the shaft the other way up. Good luck ! Arfa Thanks. I tried a 12-toothed pinion and it appears to work. It's a bit noisy during a full traversal of the sled, but it feels smooth enough by hand. I now have a second problem, most likely a weak laser. It's an auto power control type which I suspect has maxed out. There is a Sharp IR3C07N laser diode driver IC on the laser assembly. I tried increasing the laser current by about 20% by shunting the series current limiting resistor on pin 1. But no joy. :-( - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
#4
Posted to aus.electronics,sci.electronics.repair
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Drive gear for Sharp CD mech
"Franc Zabkar" wrote in message ... On Thu, 03 Aug 2006 00:38:15 GMT, "Arfa Daily" put finger to keyboard and composed: "Franc Zabkar" wrote in message . .. I need the drive gear for the sled motor for a Sharp H8134AF laser assembly out of a GX-CD555Z(GY) portable 3-in-1 unit. Its dimensions are 6mm high, 4.5mm OD, 2mm shaft dia (suits RF-310T-11400 motor). It has 11 teeth. TIA for any assistance. - Franc Zabkar Franc I have stolen gears from many different mechs to replace ones that have split in the position where you've got the bad one. Some have 13 teeth, but they appear to run just as well with no tightness or tooth misalignment. If you have a scrap DVD deck in your junk box, there's a good chance that the sled drive pinion will do the job. If the one you find has a lip around the bottom edge, it can simply be put on the shaft the other way up. Good luck ! Arfa Thanks. I tried a 12-toothed pinion and it appears to work. It's a bit noisy during a full traversal of the sled, but it feels smooth enough by hand. I now have a second problem, most likely a weak laser. It's an auto power control type which I suspect has maxed out. There is a Sharp IR3C07N laser diode driver IC on the laser assembly. I tried increasing the laser current by about 20% by shunting the series current limiting resistor on pin 1. But no joy. :-( - Franc Zabkar Ha. That's a shame. It's always a real ****er when you do something really clever like fixing a drive mech from the junkbox, only to find that the laser is naff. The life of a service engineer eh? who'd want it ... ? Arfa -- Please remove one 'i' from my address when replying by email. |
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