Samsung 205BW color display, power indicator light, the screen without breakdown maintenance method of image -Service Manual Download|Circuit Download|Download Drawings|schematic download|route map download|free download user manual

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Samsung 205BW color display, power indicator light, the screen without breakdown maintenance method of image

Time：2014-08-17 08:54:47 Source：Network Author：Unknown Clicks：1713

This machine USES single chip GM766H - LF (IC300), external MXPM25LV010 as MCU program storage. This machine only 13 V power supply, power supply board to the driven plate, after IC302 (MP1583DN) converted to 5 V, then through AICl084 IC300-33 into a 3.3 V supply. Use programmer check IC301 (PM - 25 lv010), found no abnormal data. t2bservice manual download site
t2bservice manual download site
Measuring the power supply voltage, + 13.3 V, + 5.12 V, + 3.285 V + 1.802 V is normal. In the practical maintenance, because the power supply displays can't boot or accident caused by bad crash failure is common, but this kind of failure is more difficult to troubleshoot, so the check on the last step. t2bservice manual download site
t2bservice manual download site
t2bservice manual download site
And monitor work in addition to the MCU (IC300) and code (IC301), is used to store the OSD menu parameters of FLASH chip - 24 c08 or 24 c16. This machine use A81SC, are actually 24 c08. t2bservice manual download site
t2bservice manual download site
Try IC200 (A81SC) to empty, after welding, electrical commissioning, digital and analog signal screen show, troubleshooting.t2bservice manual download site