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Great tape deck manual!
I'm very positively surprised, because it is a very long manual, lot of pages, drawings, diagrams, description of how to make the alignment and adjustment procedures.
It is as good as the old "Naka" manuals from the 1970's - if somebody have seen them, they know what I mean by that.
I recommend to buy this very much !
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I am a vintage hifi collector. No way to fix that device without the appropriate service manual...thanks to your site I got it and every thing is easier now. I got the manual right after ordering: fast cheap accurate ... thank you
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Wonderful job clear. Qick fantastic. These people are really good. If even a problem arise they are wonderful assisting you. These scheme is so net despite this is a very old TV. Thank you for everything!!!!!!!!
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Detailed schematic diagram, manual for professionals
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Good service manual,exploded view,adjusment and test point locations,head alignment,mechanical checks and adjusments,all perfect.
15JF-25S
� Screen Adjustment
1. G2 Adjustment 1. 2. 3. 4. 5. 6. 7. 8. 9. Enter the Service Mode (see page 6). Use the channel up or channel down buttons to enter the << BLUE-BACK >> function. Set this to << BLUE-BACK: 0 >>, i.e. blue background is turned off. Turn the set off at the mains. Turn the set back on. Set the picture control settings to normal. Select the SCART input by pressing the TV/SCART button on the remote control. Do not connect an input to the SCART socket. A blank raster will appear. Connect an oscilloscope to TP852 on the CRT PWB. The waveform as in figure 4 should be displayed. Adjust the G2 control (screen voltage) so that the peak of this waveform is 3.0V +/-0.1V above the zero volt line.
� 9GF
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Figure 4
10. Enter the Service Mode. 11. Turn the blue background function back on again - set << BLUUE-BACK: 1 >>. 12. Turn off the receiver using the mains button. 13. The G2 adjustment is now complete.
2. Focus Adjustment 1. 2. 3. Receive a monoscope pattern signal at a level of 60 to 80 dB/µV. Set the picture settings to normal. Adjust the focus potentiometer to obtain maximum definition.
� AGC Adjustment
1. 2. 3. 4. 5. 6. 7. 8. Tune the receiver into a colour bar signal on channel E-12. Set the RF generator to an output signal strength of 57dB/µV (+/-1dBµV) �50 Ohms unbalanced. Connect an oscilloscope to TP201. TP201 is one end of R201. Enter the Service Mode (see page 6). Use the channel up and channel down buttons to enter the AGC mode. By using the volume up and the volume down buttons, adjust the AGC until the voltage on TP201 drops by 0.1V to 0.3V below its maximum value. Change the input signal strength to 66-70 dB/µV and make sure that there is no noise apparent in the picture. Turn the receiver off at the mains, this will exit the Service Mode and store the adjustment.
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