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Hi Jim, Please check the resistor of LED and fine tune to see if you can reduce the brightness of LED. |
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Hi SB and Philip, Upload light pipe change note for your reference. Please let ue know which value of resistor which will be accepted by SKB in EVT mockup sample Please refer LED resister. For 5mA Red : R1309 change about 630 ohm Green : R1306 change about 420 ohm Blue : R1303 change about 450 ohm For 3mA Red : R1309 change about 1066 ohm Green : R1306 change about 733 ohm Blue : R1303 change about 766 ohm |
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Hi SB, did you get the confirmation with SKB about the brightness? We need your final feedback because we're proceeding with the DVT layout. Please feedback within today or I'm afraid that we will delay our schedule. |
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SKB will check at 3/19 afternoon. I'll feedback tomorrow |
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Hi SB, do you have any feedbacks from SKB? |
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Hi SB, do you have any feedbacks from SKB? |
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Hi Sheila. not yet. I already said to them today. but they say wait. |
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Hi, Sean. SKB's feedback is that 3ma (IF Current) is also bright. they request to tune 1mA (IF current) check again. is it possible tune 1ma? |
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Hi SB For 2mA Red : R1309 change about 1.6K ohm Green : R1306 change about 1.1K ohm Blue : R1303 change about 1.1K ohm For 1mA Red : R1309 change about 3K ohm Green : R1306 change about 2K ohm Blue : R1303 change about 2K ohm |
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Hi Sean Last week I reworked to change resister, gave SKB to samples for confirm brightness. SKB will answer to us |
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Hi Sean Today's morning, You showed me to the other STB's LED diplay. Please update this pictures about more dipuser case and less dipuser case. If you give this pictures, I can communicate to SKB easily |
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Hi SB, Please find attached for the lighpipe glowing effect of different propotion of diffuser (TiO2) The supplier needs at least two weeks to do sample preparation. Please let us know SKB's idea and then we can prepare the lightpipe samples in advance. |
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Hi Sean. Good job and Today SKB request to setup LED current 1mA. |
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Hi Sean. 1. We discussed to LED brightness at my business trip. - first step is check the deffuser (TiO2) pipe line - second step is to change LED current. (5ma -> 3ma -> 1ma) 2. Do you have any comment? |
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Hi SB, I agree with your comment. In addition, is there any comment from SKB about the adding diffuser (TiO2) in lightpipe? Which kind of glowing of light pipe does SKB prefers? |
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Hi Sean I received the DVT board. and checked LED brightness condition. 1. all LED colors are not uniform. the top of PIP line looks almost turn off. 2. The white LED is not white color. it looks a little purple. - You said that DVT LED current setup 5mA. so I also check T1+EVT board (EVT board setup 10mA.) - the White LED with EVT+T1 also looks a little purple - In my opinion, this symptom cannot be solved that all LEDs are tuning at the same capacity. each LED should be tuning individually. 3. Is PIP line final version? |
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Hi SB, 1. I remember FXN explained that it's impossible to keep "the pure white" color becuase it's mix color many times. We also checked whether SKB could pay the customization fee to customize 3 color with the "pure white" before. And the answer that we got is "No, because the vendor needs around 3 months to proceed with this customization". 2. Could you let us know how to produce Eagle from MP if you requires FXN to tune every pcs on the production line? |
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Hi Sheila. 1. I didn't hear that pure white color is impossible. there is no comment at this mantis. and I just communicate with Sean for engineering side. If you impossible to make pure white, I see. I never comment any more. 2. I don't know how to procuce Eagle from MP |
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Hi SB, because there is only 1.5 months left before MP, could you help to sync about the hardware issues with ALT and SKB? It will be really helpful to speed up our remaining development process. Thank you. |
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Hi SB, The PIP line is final version but should be able to fine tune such as add diffuser to improve the conduction of light. I will check with ME to see if any way to improve the conductivity of LED light About LED light color issue, can you confirm the LED original color (no light pipe) is white or a little be purple? We found that if only use lightpipt to put on the PCBA's LED, the color could be wrong if we put the wrong position of lightpipe. Would you pleases double confirm it? |
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Hi Sean. I have some question 1. If you fine tuning diffuser, you can solve the color uniformity and display pure color? 2. I saw the LED without tool state, It is difficult to judge whether the white led is original or a little be pure. when I see the LED in the board with eye directly, the LED Color looks R/G/B Seperately at full white state. Anyway I'll discuss to SKB at weekly meeting. and I update some pictures 1. another company's SKB settop box : I think this model display pure white uniformly 2. DVT's LED display without tool : In my opinion, the LED light is not display pure white. anothercompany_SKB_STB.gif (84,534 bytes) DVT_LED_withouttool.gif (98,844 bytes) |
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Hi Sean I show you another SKB's model. this model is similar to Eagle about LED display. see attached file. this model's LED PIP line longer than Eagle. but the LED light is uniform. the outside of pipline is narrow, but inside of pipline is wide. KakaoTalk_20190503_173740176.jpg (75,200 bytes) KakaoTalk_20190503_173739752.gif.jpg (83,274 bytes) KakaoTalk_20190503_173738843.jpg (77,771 bytes) KakaoTalk_20190503_173738425.jpg (50,096 bytes) othermodel_pipline1.gif (84,611 bytes) othermodel_pipline_led.gif (249,573 bytes) othermodel_pipline.gif (55,679 bytes) |
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Hi SB, We co-work with Everlight for LED light color tuning, there are some parameters of resistors need to fine tune. Please see the table as we tune in our site and see the LED color is good for real white color on EVT board. Due to the vendor help to tune the old material, not DVT material. Please change the relative resistors and check the LED color on EVT board. Thank you. RGB=953_Resistance.png (82,172 bytes) RGB=953.png (82,573 bytes) |
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Hi Sean, Fu-chiang this resister value is not common. I cannot find this value of resister in Korea. so you FII should give me this resister. please give me this resister by your business trip man handcarry. And In my opinion EVT board tuning doesnot mean anything. because, EVT cannot assemble T1. and EVT's mock up has old pipeline. please check again with DVT and final tool. |
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Hi Philip and SB, Can you confirm which level of diffuser that SKB like to have in final product? We will ask our supplier to prepare the sample for testing. Diffuser level.png (43,663 bytes) |
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Hi SB, As per I talked with Philip this afternoon, we have worked with supplier last week and our supplier suggest us to tune the R/G/B current as 9/5/3 (mA) to make sure that the LED color close to pure white. The EVT sample you have on hand that the LED color will be close to blue white. |
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Hi Sean. thank you for suggest several diffuser level. I have a question 1. what is your opinion about diffuser level? I ask you to your advice as a Foxconn HW leader. 2. I cannot confirm or choose to diffuser No. with only picture. for discussing with SKB. I need to real material. |
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Hi SB, could you update your comments for LED brightness and light pipe? We're waiting for your final comment to start the material preparation. Thank you. |
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Hi Sean. Mr. Philip handcarried your golden sample of LED setup sample. He showed SKB with this sample. SKB accepted to LED brightness and uniformity. 1. Light pipe line : white 2. LED Current : 7/7/5mA 3. LED sample : Use EVT LED. Thank you for your support. good job. |
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Hi SB, Got it. Thanks for your confirmation. |
- yk.jung ( (ALTech) Younkwang Jung ) developer
