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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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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
28HW-57E
Lower Corner Correction Adjust the Lower Corner Correction so that the picture is centred. The effect of this adjustment is shown in figure 7. � When the volume up button is pressed, side pincushion changes from pincushion to barrel shape. � When the volume down button is pressed, side pincushion changes from pincushion to barrel shape. � Press the stand-by button on the remote control to store.
Fig.7
Vertical Linearity Adjust the Vertical Linearity so that the upper and lower parts of the picture are symmetrical. The effect of this adjustment is shown in figure 8. � When the volume up button is pressed, the upper picture scanning decreases and the lower picture scanning increases. � When the volume down button is pressed, the upper picture scanning increases and the lower picture scanning decreases. � Press the stand-by button on the remote control to store. Fig.8 Vertical Angle Adjust the Vertical Amplitude so that the picture is centred. The effect of this adjustment is shown in figure 9 � When the volume up button is pressed, the vertical angle changes. � When the volume down button is pressed, the vertical angle changes. � Press the stand-by button on the remote control to store. Fig.9 Vertical Bow Adjust the Vertical Bow so that the picture is centred. The effect of this adjustment is shown in figure 10 � When the volume up button is pressed, the vertical bow changes to right. � When the volume down button is pressed, the vertical bow changes to left. � Press the stand-by button on the remote control to store. Fig.10 Vertical Amplitude Adjust the Vertical Amplitude so that the picture is over-scanned. The effect of this adjustment is shown in figure 11. � When the volume up button is pressed, the vertical size of the picture increases. � When the volume down button is pressed, the vertical size of the picture decreases. � Press the stand-by button on the remote control to store.
Fig.11
S Correction Adjust the S Correction so that the picture symmetrical between the top, centre and bottom. The effect of this adjustment is shown in figure 12. � When the volume up button is pressed, the top and bottom scanning increases and the centre scanning decreases. Fig.12
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