LG KG280 Service Manual - Page 36
Key Back-light Illumination
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3.13 Key Back-light Illumination In key back-light illumination, there are 12 White LEDs in Main Board, which are driven by KEY_BACKLIGHT signal from AD6720. Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes VBAT KEY BACKLIGHT Figure 3-15. KEY BACK-LIGHT ILLUMINTION R422 12K C421 27p R423 10 R424 10 65 4 KEY_BACKLIGHT R417 12K 10V Over ECCH0000182 C405 0.1u C406 0.1u C407 0.1u C408 0.1u C409 0.1u C410 0.1u SSC-TWH104-HLS LD400 R404 SSC-TWH104-HLS LD401 R405 SSC-TWH104-HLS LD402 R406 SSC-TWH104-HLS LD403 R407 SSC-TWH104-HLS LD404 R408 SSC-TWH104-HLS LD405 R409 100ohm 100ohm 100ohm 100ohm 100ohm 100ohm - 37 - Q400 IMX9T110 3. TECHNICAL BRIEF 12 3 C419 27p R419 10 R420 10 LDS4S0C6-TWH104-HRL4S10 SSC-TWH104-HLS LD407 R411 100ohm 100ohm SSC-TWH104-HLS LD408 R412 100ohm SSC-TWH104-HLS LD409 R413 100ohm SSC-TWH104-HLS LD410 R414 100ohm SSC-TWH104-HLS LD411 R415 100ohm EDLH0012501 C411 0.1u C412 0.1u C413 0.1u C414 0.1u C415 0.1u C416 0.1u VBAT LGE Internal Use Only
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