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| comentario del autor | Mar May 22, 2007 9:57 pm | |
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http://www.yoreparo.com/foros/reparacion_de_tv/31015.html |
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| sin valorar | Mar May 22, 2007 11:37 pm | |
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prueba desmontando la tarjeta del LED laser y limpialo con muchísimo cuidado, hay veces que no es el sistema de espejos sino el LED mismo que está sucio. suerte. copierpilot |
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| comentario | Mie May 23, 2007 4:29 am | |
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SC322.doc (53 kb) - |
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| comentario del autor | Lun May 28, 2007 11:10 pm | |
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| sin valorar | Lun May 28, 2007 11:25 pm | |
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The 1st laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated. - Possible causes - · Poor connection between the laser synchronization detector board and the LD unit. · Laser synchronization detector board out of position · Laser synchronization detector board defective · LD unit defective Laser beam pitch adjustment There are two laser beam pitch adjustment procedures: one for 400 dpi, and one for 600 dpi. These adjustments use the following SP modes. · SP2-109-1: LD Beam Pitch Adjustment – 400 dpi · SP2-109-2: LD Beam Pitch Adjustment – 600 dpi · SP2-109-3: LD Initial Setting – 400 dpi · SP2-109-4: LD Initial Setting – 600 dpi · SP2-902-2, no.12: IPU Test Pattern – Cross Stitch – 400 dpi · SP2-902-2, no.13: IPU Test Pattern – Cross Stitch – 600 dpi 1. Do SP 2-109-8. 2. Input the value “144” into SP2-109-1. 3. Perform SP2-109-3. 4. Print the 400-dpi test pattern onto A3 (11”x17”) paper using SP2-902-2 no.12. 5. Write the value of SP2-109-1 on the test pattern (in this case “144”). 6. Change the value of SP2-109-1 and print another test pattern, repeating steps 2 to 4. Print about 5 patterns with different values for SP2-109-1 (e.g. “48”, “96”, “192”, “240”). 7. Check these test patterns. If the laser beam pitch is not correct, the image looks like a black vertical strip pattern. NOTE: As an example, if the pattern made with the value “192” has less obvious strips than the other print outs, the correct value is near “192”. 8. Adjust the laser beam pitch position until the thin lines are of uniform thickness (no striping effect should appear on the printout), doing steps 2, 3, and 4 (in step 2, input a value which is estimated to be correct, then do steps 3 and 4, then if necessary go back to step 2 and try another value). 9. After adjusting the laser beam pitch for 400 dpi, adjust the laser beam pitch for 600 dpi, using the same procedure as for 400 dpi (use the SP modes for 600 dpi). When starting the adjustment for 600 dpi input value for SP2-104-1 between 24 and 48 higher than the result for 400 dpi. Si no reemplaza el motor poligonal y ya. Exito. Luis P.R. |
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| sin valorar | Mar May 29, 2007 4:04 am | |
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Suerte |
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| sin valorar | Mar May 29, 2007 3:22 pm | |
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Saludos y valora. |
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