User manual GRUNDIG STF 55-3232-7 TOP

[. . . ] ) In the event of a defective picture tube or cabinet please contact your local After-Sales Service. Disassembly of the chassis Before disconnecting the chassis connecting leads observe the way they are routed to the individual assemblies like the mains switch panel, keyboard control panel, picture tube panel, deflection unit or loudspeaker. On completion of the repairs the leads must be laid out as originally fitted at the factory to avoid later failures or disturbances. [. . . ] ­ Switching the blue screen background on or off with the buttons /. 1 Electronic Programme Lock (parental lock) Enter the key sequence "7 0 3 8" to cancel your personal code number. 3 Automatic Volume ­ Pressing the button "MENU" and call up the dialogue line "Auto volume" with the buttons "P+" / "P-". ­ Call up the dialogue line "Service" with the buttons "P+" / "P-" . +B voltage Preparation This voltage must be checked and re-adjusted if necessary after every repair and before every alignment. Call up the dialogue line "AGC-TOP" with the button P+ / P-. Call up the dialogue lines "BT", "CT" and "SC" with the buttons P+ / P- and set the following value with the buttons / : Set "BT" to 48 Set "CT" to 48 Set "SC" to on The adjustment "screen grid voltage" must be done before. Call up the dialogue line "RB" and then "GB" with the button P+ / P-. Call up the dialogue line "RD", "GD" and then "BD" with the button P+ / P-. With "SCREEN" control (lower control at the splitter transformer) adjust the line so that it is just well visible. Adjust the SB with the button / next to the dark scale is visible. Call up the dialogue line "SB" with the button P+ / P-. With FOCUS F1 (splitter transformer), adjust the horizontal lines in the center of the picture to the minimum vertical width. The sharpness in the middle must not seem to be worse than the sharpness at the edges. With FOCUS F1 (splitter transformer), adjust the vertical lines approx. 5cm from the right and left picture edge to minimum horizontal width. With FOCUS F1 (splitter transformer), adjust the vertical lines approx. 5cm from the right and left picture edge to minimum horizontal width. [. . . ] Call up the dialogue line "EWTRAP" with the button P+ / P-. Call up the dialogue line "ZOOM VX" with the button P+ / P-. Adjust according to the test pattern using button Adjust according to the test pattern using button Adjust according to the test pattern using button Adjust according to the test pattern using button Adjust according to the test pattern using button Adjust according to the test pattern using button Adjust according to the test pattern using button Adjust according to the test pattern using button The regulations and safety instructions shall be valid as provided by the "Safety" Service Manual, part number 720108000000, as well as the respective national deviations. [. . . ]