REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 9 February 2019

SHARP LC-30HV4M _ LC-30HV4X _ ICS _ INFORMATION

SHARP LC-30HV4M _ LC-30HV4X _ ICs _ INFORMATION


IC2501 (MSP4458G)
IC for decoding audio signals.
It serves as an S-IF audio signal decoder and an audio data selector.



IC2701 (IXA385WJ)

IC for controlling audio delay.
This model uses a frame buffer to process video signals. This results in a delay in outputting video signals. The IC delays output of audio signals to synchronize output of video and audio signals.



IC1301 (CXA2069Q)

7-input, 3-output selector.

This IC selects all audio and video signals received from input terminals and the tuner, except those signals that relates to PC and components.
Video signals delivered to the IC are sent to Y/C separation circuits IC401 (main) and IC402 (sub). Audio signals are sent to the SR unit via IC2501 (sound processor).



IC1401 (MM1519XQ)

4-input, 3-output video selector for component input.

This IC receives AV3 component input, AV1/3 RGB input and teletext RGB signals. Its output is for main, sub and component.




IC1601 (SDA5550M) (Only for LC-30HV4M)

Teletext processing micro-processor.

This IC receives vide signals, decodes teletext and outputs data in RGB format.




IC7001 (μPD64084)

This IC provides 3D processing of NTSC signals and thus high resolution Y/C separation of the main image signals received from IC1301.

It incorporates a 4M-bit frame delay memory board and features one-chip 3D Y/C separation.


  • Two operation modes available; dynamic image 3D Y/C separation mode and 2D Y/C separation + YCNR mode
  • Y coring circuit, vertical contour compensation circuit, peaking filter and noise detection circuit incorporated
  • Power down mode available to minimize power consumption when not in operation.

IC401/IC402 (TC90A69)

Adaptive in-field comb filter supporting both the NTSC and PAL systems. Equipped with CNR circuit, the 3-line digital comb filter is a high-precision Y/C single chip, which provides Y/C separation of sub image signals received from IC1301.




IC403/IC7003/IC404 (ML6428Cl)
6.7 MHz low-pass filter.




IC801/802 (TB1274AF)


  • IC for synchronous processing of video and chroma signals for PAL/NTSC/SECAM colour TV.
  • Color demodulation is provided by a high-performance image compensation circuit in the video section, a PAL/NTSC/SECAM auto discrimination circuit in the chroma section, and a crystal that generates 4.43 MHz, 3.58 MHz and M/N-PAL clock signals.
  • This IC has a 4-channel YC signal input, 2-channel RGB signal input, and 2-channel chrominance signal input.It receives main and sub chrominance signals from IC401 (main) and IC402 (sub) and delivers chrominance signals via one-channel output.

IC803 (CXA2101Q)


  • IC having a chrominance input integrated with a high-performance image compensation circuit. Equipped with circuits for processing base band signals and RGB signals and a 4-channel video switch incorporating an H/V synchronization signal processing circuit.
  • Input selection is done by INPUT-SEL (IIC BUS). YCbCr, Y, PbPr, GBR and their H/V synchronization signals are inputted to input pins of each channel.
  • Multi-scan facility permits acceptance of a horizontal scan line frequency range of 15 kHz to 60 kHz.

IC1901 (IXA392WJ)

FPGA for synchronous processing.

This IC selects synchronization signals and creates horizontal blanking signals.




IC604 (TA1318AF)

IC for synchronous processing of TV component signals and measurement of frequency.

This IC incorporates an input signal frequency measurement feature and synchronous regeneration features.
It supports synchronous horizontal regeneration (15.75 kHz, 31.5 kHz, 33.75 kHz and 45 kHz) and synchronous vertical regeneration (480I, 480P, 576I, 720P, 1080I, PAL 100 Hz, and NTSC 120 Hz).




IC10004 (CXA3506R)

3-ch, 8-bit 120MSPS A/D converter incorporating AMP and PLL.

This IC process video signals supplied to the interface board. On the main side, video signals (analog RGB) from CN6 are inputted to IN1 of IC10004. On the PC side, video signals (analog RGB) from CN8 are inputted to IN2 of IC10004.
Converted digital signals are sent to IC10025.




IC10310 (TLC5733A)

3-ch, 8-bit 20MSPS A/D converter.

This IC processes video signals supplied to the interface board. It receives analog signals (YCbCr) from CN6 and sends converted digital signals to IC10310.
The incoming video signal is converted to digital one and fed to IC10025.




IC10025 (IXA091WJ)


  • IC for I/P conversion and scaling of digital image according to the output resolution, and for data conversion.
  • There are two input channels: V0 and V1. V1 is for sub 480i input processing for two-screen application. V0 is for processing all signals for main used for one and two-screen applications.
  • The IC generates clamp signals based on input synchronization signals.
  • It also performs data matrix conversion.
  • It creates OSD signals.
  • The incoming video signal is fed to IC10413.

IC10413 (SII170)
Panel link transmitter.
This IC converts 8-bit RGB image data received from IC10025 into TMDS differential signals and sends the resulting digital signals to the monitor.
HDCP function is provided.



IC10001 (IX3270CE)

One-chip RISC microprocessor.

This IC communicates with the monitor and controls the system operation.

It controls all the ICs located in the AVC system.




IC10405 (μPD4721G)

RS-232 line driver/receiver conforming to EIA/TIA-232-E.

This IC enables the system to be controlled from a PC connected to the system.

It also allows IC10001 to be upgraded using the PC.
Posted By: FRANK at 02:40
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