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I used your service and I found myself well I need service manual teac v plate 770 and I was able to access and remove the belt that erno routes. thanks I recommend it to all
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At first I thought there had been a mix up as I required the service manual for the cassette unit and the one supplied was for the CD unit. However when I scrolled further down I realised that both had been scanned together! This enabled me to dismantle and repair the cassette unit as intended and I also have a copy of the manual for both the CD and graphic equaliser units should I ever need them. Thanks very much for a great service.
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Excelent service, the manual is complete, very cheap and fast
Alberto
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The item received was as described, as expected. I was pleased with the order. Thank you.
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Superb rendition. Drawings (schematics) complete and unabridged. I do a great deal of vintage audio restoration. Documentation is essential for successful repairs. I have found sources over the years that offer good documentation, but rarely all that is necessary. Owner's Manuals has filled that void with complete and legible documentation. They have narrowed my "favorites" to a more manageable collection. This Denon manual in particular contained the latest revisions level, and offered alterations favorable to updating the item. The Illustrated Parts Breakdown (IPB) was well enough detailed to simplify part symbols and physical locations. You will not be disappointed!
The R-Y and B-Y colour difference signals (from TDA8374 pins 30 and 29) are AC-coupled and clamped by the input stages at pins 16 and 14. An internal 6 MHz Current controlled oscillator is line locked via a PLL to the sandcastle pulse at pin 5. This clock drives the delay lines to obtain the required 64 sec. Sample and hold low pass filters supress the clock signal. The original and the delayed signals are added, buffered and fed to the output pins 11 and 12. These are AC-coupled to the R-Y and B-Y colour difference input pin 32 and 31 of TDA8374. The TDA4665 needs a 5 V supply voltage on pin l for the digital part and on pin 9 for the analog part.
TDA8356 vertical deflection.
The TDA8356 is a vertical deflection circuit. It can be used in 90 deflection systems with frame frequencies from 50 up to 120 Hz With its bridge configuration the deflection output can be DC coupled with few external components. Only a supply voltage for the scan and a second supply for the flyback are needed. The TDA8356 can drive max.2A. The vertical drive currents of TDA8374 pins 47 and 46 are connected to input pins l and 2 of the TDA8356. The currents are converted into a voltage by a resistor between pins 1 and 2. Pin2 is on a fixed DC level (internal bias voltage) and on pin l the drive voltage can be measured (typical 1.8 Vpp). The drive voltage is amplified by �A� and fed to two amplifiers �B� and �C�, one is inverting and the other is a non inverting amplifier. The outputs (pins 4 and 7) are connected to the series connection of the vertical deflection coil and feedback resistor . The voltage across feed back resistor is fed via pin 9 to correction amplifier �D�, to obtain a deflection current which is proportional to the drive voltage. The supply voltage for the TDA8356 is 16V at pin 3. The flyback generator has a separate supply voltage of 45V on pin 6. The guard pulse is useful to synchronize OSD.
Horizontal deflection
The circuit contains horizontal drive, line output transformer. The horizontal driver pulses from the TDA8374 are amplified in the horizontal drive circuit, to get sufficient base-drive current for the high voltage switching transistor Q401. During the horizontal scan period( =52 s) Q401 will conduct, and a sawtooth current flows from +110/123V through the primary winding of the FBT to ground. After this time Q401 is switched off and the energy stored in the FBT during the scan period will be transformed to the flyback capacitor C410. This energy transfer will take place in a cosine shape because the primary of the FBT and C410 from a resonant circuit. The time the energy is transferred from FBT to C410 and back to the FBT, is called the flyback time and will take place in about 12 s. The flyback peak voltage is about 8 times the scan voltage. In series with the horizontal deflection coil there is a (damped) linearity corrector coi1. During the scan there is some loss in the resistance of the deflection coi1. In the first part of a line the linearity corrector stores some energy in a permanent magnet until it is saturated. This improves the linearity of the horizontal scan speed. The required S correction for the picture tube can be adjusted with the value of C411. The beam current limiting information (BeamCurr) is derived from the foot of the H.V winding of the FBT. 36
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