TOSHIBA 50PH18P
Service Manual

Adjustment items Focus adjustment The method mentioned left is applied to the focus adjustment on the G lens adjustment of 43PH, 42W.The details of G lens adjustment for 50PH,61PH, 50W, and 57W are described in the previous page.

Adjusting methods 4) Adjust the G lens focus. (Applicable only to 43PH, 42W) Watch the horizon of the left and right both ends of the screen (the range of circle with 100mm diameter shown in the following sketch), make optimum adjustments on the G lens focus, and check that the focus balance on the right and left is satisfactory. (Balance check of left-and-right G lens focus) (1) Adjust the G lens focus best by crosshatch of the left end (or the right end). (2) Check the focus of the right end (orthe left end). If the balance of the left and right lens focus (flare) is different, part it and adjust to the medium quality. Check the environment and confirm that the focus quality (including flare) is within a tolerable range.

Point to be noted during G lens focus adjustment (To be adjusted within circles of 100mm diameter contacting the left and right of the bezel)

Concerning items 1), 2), 3), and 5) of G adjustment, these are common to the ones on the previous page. 3. R adjustment 1) Set to the R monochrome by lens cap. 2) Receive the image of Retma pattern. 3) Adjust the R electrical focus. Adjust by focus volume of the focus block (Z410) so that the screen center will come to optimum focus. 4) Adjust the R lens focus. Adjust so that the screen center will become the best. 5) Repeat 3, 4, and attempt to further improve the focus quality.

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GENERAL ADJUSTMENTS