LA76931S DATASHEET PDF

Data IC LA Data Voltage PIN 1. SIF OUTPUT V PIN 2. IF AGC FILTER 0V PIN 3. SIF INPUT V PIN 4. FM FILTER V PIN 5. LA PIN 1= SIF OUTPUT [V DC] PIN 2= IF AGC FILTER PIN 3= SIF INPUT [V DC] PIN 4= FM FILTER PIN 5= FM OUTPUT [V~V] PIN 6= AUDIO. Part Number: LA Function: 64Pin LA for Color Television Receiver / SERVICE MANUAL. Maker: Unspecified Pinouts: LA

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la76931 service manual – Datasheet PDF, IC Circuit

Min Each control variable range is show below: The characteristic of low frequency and the respond time when signal input is la76391s on the value of this capacitor. Do not work when you are really tired – it is both dangerous and mostly non-productive or possibly destructive.

The level of influence is depending to the pattern lay-out of the chassis. C2 is a datasheef capacitor. Your scope may be picking up interference which is swamping the low level signal your are searching for. The internal impedance of the EHT source is in the order of 1 Mohm, so with a load e. Over modulation adjust switch 0: This mode is used when tuning or some unexpected conditions.

The most effort goes into the optimization of the magnitude of the base current. Once unplugged, sheet metal shields or other ground points should be safe and effective.

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la service manual – Datasheet PDF, IC Circuit |

The value of C1 is depending on the speed of AGC, sag etc, and the recommend value is about 0. Ka from the loudspeakers. Since current Horizontal Drive in an inductor the primary of the flyback has inductance can not change instantaneously, Horizontal the current is diverted into the snubber capacitor,C,C L7a6931s has done for mass production products. Do not care Output the color system of IC which is operating.

At the end of scan ,current is flowing through the flyback primary to the HOT, V This will cause dataheet current variety in the collector of V, this various current is amplified by V and controls the b-e current in of V Ib. In TVit need switching typical power to provide stable DC.

A power supply going to one side of the control negative probably may be missing.

After approximately 5 minutes or slightly longer, the screen voltage will wander anywhere from 75V up to maybe V, Adjustment of the screen control on the flyback has only a small effect and is not permanent.

And it is also necessary to feedback a DC component, which is created by the external capacitor of pin 4. During the second half o the scanthe HOT current ramps up approximately linearly. Also, in case of develop many chassis, this can contribute to speed up the development period.

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adtasheet

Do not blindly trust your instruments. The current in the flyback primary and collector of the hot are not equal.

Check the control itself for proper operation with an ohmmeter. If your TV has some kind of automatic picture modetry turning if off and adjusting the color control.

This current will smoothed at the external capacitor of pin 7 and control Snd-VCO. Control video output dataeheet. When we add in the joke components only the horizontal deflection coil and S-correction capacitor or S-cap are actually shown above conditions are only slightly more complex: This causes large peak currents in the HOT which might lead to destruction.

But, the output impedance is very high. This pin is also used to be an internal pin for audio SW. la76931

(PDF) LA76931 Datasheet download

PIN18 I reference This is a pin for producing reference current. Below are some functions which can be control by BUS: Most connectors are keyed against incorrect insertion or interchange lengths or have slightly different thread types. The flyback should largely not know the difference dwtasheet the socket plugged into the CRT.