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let's say first that i do not need to have a credit for my opinion, i am a retired sparkie and i voluteerd to fix an electronic device for a local "Youthgroup",as no diagram was present i checked the "net" and gambled on this site and paying some fee via PayPall, i was gladly surprised that the manual arrived as was stated, GOOD SHOW, and best wishes, John
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I had been looking for a Manual for my CS2150 for quite a while -- in fact I had just about given up. I saw this site and decided to download the Manual. When I Received it by Email I was really pleased with what I got, with the result that My Kenwood 'Scope is now 100% repaired and working well. As an AV Serviceman, you need a good 'scope, and thanks to this site, and the Service Manual, I have been able to repair it. The Manual was a copy of the Factory Original and the copy was very clear, especially in the area of the Circuit Schematics, where You really need to be sure of what You are looking at.
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I recently purchased a manual for a Samsung DLP tv to help with a trouble shooting problem I was having. Every tv repair shop wanted close to $400.00 for the fix, but after I found Owner-Manuals.com I hit pay dirt. The manual they had for me to purchase and download was a complete service manual for the exact tv I needed. It was complete with wiring diagrams, schematics, and even part numbers. If your the fix it yourself type I highly recommend trying to find any manual here before paying someone else to fix whatever problem your having.
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Once again, excellent price and manual delivered in a timely manner and as advertised!
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Outstanding quality manual. This is the exact documentation I needed to service my AKAI GX-210D. This is a PERFECT COPY of the service manual for my machine. Outstanding service. Thank-you!
� R Signal Matrix Circuit The Y signal and R�Y signal are added at Q115 to form the R signal. � G Signal Matrix Circuit At IC307, the R�Y signal and B�Y signal are inverse-amplified and added via IC306 (gain control amplifier). This signal is added to the Y signal at Q315 to obtain the G signal. The mixing rate is determined by R358, 359, and 361, and the R�Y and B�Y GAIN are finely adjusted. � B Signal Matrix Circuit The Y signal and B�Y signal are added at Q515 to form the B signal. 6. RGB Switch Switches between the RGB signal and R,G,B signals from the matrix circuit. 7. Clamp Circuit (2) The voltage of the BLACK pulse of the R signal is sample-held at IC110. At IC113 (1/2), this voltage and the GND level are compared to control the DC bias of the R signal amplifier (Q120 to Q122). As a result, the pedestal level of the R signal is fixed at the GND level. The same is performed for the G and B signals. 8. Half Blanking The video signal is half-blanked at the timing of the CHAR BLK signal. The half-blanking level is switched by the HALF LEVERL SW. 9. 100 IRE Pulse, SET UP Pulse Insertion Circuit To adjust the contrast, the 100 IRE pulse and SET UP pulse are alternately inserted into the horizontal blanking period of the R,G,B signals. For the R signal, the 100 IRE pulse and SET UP pulse are inserted at IC112 (3/3). The level of the 100 IRE pulse is set by the R100 IRE voltage. The level of the SET UP pulse is set by the R SET UP voltage. These two voltages are switched by WHITE INSERT P at IC110 (3/3), passed through IC112 (2/3), and input to IC112 (3/3). At IC112 (2/3), the half-blanked video signal is inserted. The same is performed for the G and B signals. 10. Blue Only Switch During the blue only mode, the B signal is output instead of the R signal at IC115 (1/3), and the B signal is output instead of the G signal at IC315 (1/3). 11. Contrast, Bright Adjustment Circuit The R signal is adjusted for its contrast at IC116 (gain control amplifier). The R signal output from IC116 is input to IC115 (2/ 3) and the voltage of the 100 IRE pulse is sample-held. At IC117 (1/2), this voltage and the CONT voltage are compared to control the gain of IC116. As a result, the 100 IRE pulse voltage becomes equivalent to the CONT voltage. Consequently the contrast can be adjusted by varying the CONT voltage. The R signal output from IC116 is also input to IC115 (3/3). In this IC, the voltage of the SET UP pulse is sample-held. This voltage and the GND level are compared at IC117 (2/2) to control the DC bias of IC112. As a result, the pedestal level of the R signal is fixed at the GND level. At the same time, the DC bias of IC116 is controlled by the BRT voltage to perform bright adjustment. The BRT voltage is generated in IC701 (1/3) by switching the BRIGHT voltage and BRT CENTER voltage in the pulse (100 IRE pulse, SET UP pulse) insertion period and in other periods. The same is performed for the B and G signals.
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BVM-D32E1WA/D32E1WE/D32E1WU
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