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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
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I will definitely be back for more information when I need it.
RM-V2550U
* View the moving images. If a screen is darker than the others due to excessive ABL, increase the contrast and decrease the R, G, B High Light so that ABL is suppressed. (e) White peak images (FRAME NO.08272) Readjust the Linear White adjustment, if the whiteness on the white peak screen differed on each screen.
6.6.5 Adjust the focus VR
In some cases, the left side of the screen may become greenish. This can be corrected by adjusting the B focus of the focus VR slightly deviated from the just focus position.
7 Confirm the moving images
View the moving images. If W/B is incorrect, set to rough adjustment. If the luminance of the multi-screen is dark or inconsistent, set the ABL switch.
R.G B
7 Precautions 7 Avoid adjusting with images with high tube radiation (FRAME NO. 13590)
If only one spot is bright in a very dark image, the screen will look bright due to the spot. Adjusting Method Adjust the B focus VR so that B is at the just focus position on the screen. While observing the left side of the screen, rotate the B focus VR in the clockwise direction (about 10 degree), and adjust so that B is 1.2 to 1.5 times the other colors from the just focus point. After adjusting, adjust the convergence and white balance again.
7 Precautions on screen hue
If the hue of the screens is green or yellow, images will not be displayed clearly. The white parts of bright images especially will appear yellow. These images can be made clear by adjusting so that they appear slightly bluish. However, if made bluish excessively, brightness may appear insufficient due to the CRT characteristics.
7 Color Adjustment (White Balance)
(a)Effects of brightness � Take note of dark images which have some high luminance parts. � The reflected light overlap with surrounding dark parts at the face of the CRT and surface of projection lens, and luminance and hue become different from the adjoining screen. (b)Differences caused by visual points � Although the joined parts of multiple screens are improved by peripheral light amount correction, the image may not be natural at some points. (Adjustment of vertical direction using the installation table) � Due to the layout of the red, green, and blue CRTs, when the screens are viewed diagonally, they may appear reddish or bluish (Color shift). � For multiple screens, as the angles of the left and right screens are different to a viewer, they may appear to have different colors. Before adjustments, check the user's visual point, and adjust at that point.
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