|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
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
;
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.
;
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.
;
Once again, excellent price and manual delivered in a timely manner and as advertised!
;
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!
Transistors TV1 and TV4 form a circuit which serves to eliminate CRT spot formation when the appliance is turned off. During operation the heater�s supply pulses, which are rectified and filtered by DV6 and CV6, keep TV1 saturated and hence inhibit TV4. The capacitor CV19 is therefore able to charge up at the voltage of +200V by way of RV19 and DV10. Grids 1 (G1) of the tube remain at ground potential since DV10 is conducting. As soon as the appliance is turned off, the final line stage stops providing the heater�s power supply pulses; TV1 is inhibited and TV4 is saturated by the +200V voltage still present and applied at its base via RV18. The collector of TV4 grounds the positive armature of CV19. As a result, grids 1 of the CRT are polarised with the negative 200V voltage present on its negative armature since the diode DV10 is now polarised the other way round. This way the CRT is completely inhibited for the time it takes CV19 to discharge, thus preventing spot formation. The RGB signals, decoupled by means of the transistors TV7/TV8/TV9, are added together and transferred to the power stage made up of TV5 and TV6 by means of the circuit made up of TV2 and TV3. The coupling capacitor CV13 together with the power stage input impedance forms a differentiator circuit which generates pulses of suitable polarity upon each signal transition. This drives a special deflection coil on the CRT which modulates the deflection velocity (Beam Velocity Modulation), thereby significantly improving image definition.
Horizontal deflection
The output line transistor is driven by the transformer TRL1 whose primary winding is driven by the transistor TL1, connected to the horizontal drive output of ICC1 via the emitter-follower TC5. The horizontal deflection stage is carried out in a conventional manner with the deflection transistor TL2, the diode (DL4/DL5) EW modulation circuit and pin-cushion distortion correction (CL8/LL6). The correction signal EW is injected into the central point of the diodes via LG2. The capacitive divider formed by CL11/CL12 is used for picking up the horizontal flyback pulse to be applied to pin 13 of ICC1, limiting its maximum value to 8V by means of the diode DL11.
Vertical deflection � EW correction
9
|
|
|
> |
|
