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I searched EVERYWHERE looking for the manual/s on this "extinct" amp. Owner-Manuals.com made it available and for nearly nothing. Thanx to them, I can decipher the unknown cables and sort them out. Thanx, Owner-Manuals.com!!
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Yes thank you i got the file i was after. There was a slight problem in my communication but it all worked out well.
A job well done.
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Great manual...really saved me. The only problem is that I thought I would be able to download it directly when I paid for it but never received the download instructions until the next morning. The board trace pages were somewhat light also: really need to turn up the contrast on the printer before printing them. The schematic page was great; very clear! Well worth the money.
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I've been in the electronic business for a long time. I used to buy Sam's Photofact for my needs which intailed having to go to the store and paying about $20 for a package of 3 different units so I was forced to buy more than I needed just to get one.
Owner manual is just at your keyboard and the information is almost instantansouly and the cost is very reasonable. Easy to print out if needed or simply read off of the screen. The larger the screen the better for obvious reasons.
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Very good manual, at a very good price. Received in a timely manner
Horizontal Drive /B+ Drive circuit
H/B+ Drive signal (square pulse) is generated from ICH01 pin 8/6. The H Drive signal is switching QH05. and H-drive trans amplify QH06�s base drive current. B+ Drive signal is amplified by push pull (QH02, QH03) amplifier, this amprified signal the switching B+ voltage is supplied horizontal deflection coil though coil(TH02)
* Refer to the Schemathics in the Page 65 (Schematic Diagram 4-4)
Brightness Blanking Reset Control CRT
* Refer to the Schemathics in the Page 65 (Schematic Diagram 4-4)
Change the Brightness level by controlling the G1.
1) In normal working condition, the G1 waveform is synchronized with the vertical sync. Since the purpose is to blank the vertical flyback scanning line when vertical is flyback, so the Clamp/Blanking pulse of ICH1 pin16 through QF07 is used to control it. 2) Brightness control is via the control at pin35 of ICM01(WT62P1) and through the control at QF04 and QF05 to control the DC level of G1
Focus CRT
* Refer to the Schemathics in the Page 65 (Schematic Diagram 4-4)
Dynamic Focus is used to get perfect focusing of each dot on the screen. There are H-Focus and V-Focus:
ICH01 Pin 32 outputs a parabolic waveform (H+V Focus). QF08,QF09,QF13 amplify this focus signal.
Vertical Deflection CRT
* Refer to the Schemathics in the Page 62 (Schematic Diagram 4-1)
Vertical deflection Saw-tooth waveform is provided by ICH01 pin12, 13 (VOUT1, 2) and Vout1, Vout2 is input to Vertical Amplified IC(KA2142) Pin 1,10 This Signal is Amplified by ICV01(KA2142) and output via out pin6 of KA2142
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