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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday, 25 March 2019

SHARP LC121M2E89 - LC150M2E - TFT LCD DISPLAY UNIT - ADJUSTMENT PROCEDURE

SHARP LC121M2E89 - LC150M2E - TFT LCD DISPLAY UNIT - ADJUSTMENT PROCEDURE




ADJUSTING PROCEDURE
Preparation for adjustment
  • Use the exclusive-use AC adapter or stable DC power supply.  AC adapter: UADP-0181CEZZ  DC power supply: 12 ± 0.5V
Special mode setting procedure
  • After initialization of E2PROM the mode is changed to the adjustment mode.
[Procedure]
  • Connect TP2007 and TP2008 to GND, and turn on the power.
[Description]
  • The initialization of microcomputer is as follows.
  • AV position, DAC data, G/A data, and video chroma data adjustment values are taken as defaults.
Change to adjustment mode.  [Procedure]
  • Short-circuit TP2007 to GND, and turn on the power.
  • Or short-circuit TP2008 to GND, and turn on the power.
  • Or holding down the [AV INPUT] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [SELECT "] key and [VOL– ] key to change the mode to the adjustment mode.
[Description]
  • The manual adjustment or adjustment through communication with the automatic machine is performed.
INSPECTION MODE
[Procedure]
Holding down the [AV INPUT] key and [MENU] key, turn on the power.
[Description]
  • In the ordinary menu select “PICTURE” with the [SELECT] key, and decide with the [VOL] key. Then select “CONTRAST”, “TINT (only NTSC)”, “COLOR”, “BLACK LEVEL”, “SHARPNESS”, “RED” , and “BLUE” with the [SELECT] key, and decide with the [VOL] key. After that, adjust values with the [VOL] key.
  • In the ordinary menu select “SOUND” with the [SELECT] key, and decide with the [VOL] key. Then, select “TREBLE”, “BASS”, and “BALANCE” with the [SELECT] key, and decide with the [VOL] key. After that adjust values with the [VOL] key.
  • VOLUME, CONTRAST, TINT (only NTSC), COLOR, BLACK LEVEL, SHARPNESS, RED, BLUE, TREBLE, BASS, and BALANCE change as follows.
  • { MIN ß à CENTER ß à MAX (Toggles)
Shipping setting mode. [Procedure]
  • Holding down the [AV INPUT] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [SELECT UP] key and [VOL+] key to change the mode to the adjustment mode.
  • [Description]
    User adjustment and other values are taken as defaults.
    If AV1 is indicated as SETTING COMPLETE, setting has been completed.
    TO cancel of special mode.  Turn off the main unit power.
Posted By: FRANK at 02:00
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