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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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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 !

Tuesday, 12 March 2019

SONY KDS-50A3000 - KDS-55A3000 - KDS-60A3000 SERVICE MODE SELF DIAGNOSING AND POWER SUPPLY CIRCUIT

SONY KDS-50A3000 - KDS-55A3000 - KDS-60A3000 SERVICE MODE SELF DIAGNOSING AND POWER SUPPLY CIRCUIT


SONY KDS-50A3000 - KDS-55A3000 - KDS-60A3000 

SERVICE MODE SELF DIAGNOSING AND POWER SUPPLY CIRCUIT  


SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the POWER LED will automatically begin to flash. The number of times the LED fl ashes translates to a probable source of the problem. A definition of the POWER LED fl ash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom is
difficult to reproduced use the Remote Commander to display the record that is stored at the internal NVM to specify the cause of the failure. 
Diagnostic Test Indicators
When an error occurs, the POWER LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the POWER LED will identify the first of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest fl ashes is identified first.
Results for all of the following diagnostic items are displayed on screen. (No error has occurred if the screen displays a “0”.)
NUMBER OF TIMES
LED BLINKS
SELF CHECK CODE
DIAGNOSIS ITEM
POSSIBLE CAUSE
POSSIBLE SOLUTION
2 times
POW_OVP
Power OVP
7V is over voltage
Check CN6903 on G Board
3 times
POW_ERR1
Power Error
12V is not supplied
Check CN6903 on G Board
5 times
LAMP_DRV
Lamp Driver
Problem with the lamp driver
Check Power Supply (Ballast)
400V (CN6501 on G Board)
Check IC4001 on FB1A Board
6 times
COVER
Lamp Cover
Lamp cover is not securely
attached
Secure Lamp Door.
Verify harness is connected
to T Board.
7 times
TEMP_ERR
Temperature Over
Inner temperature is too high
Remove dust from fan and
ventilation is clear.
8 times
AUD_PROT
Audio Protect Error
Short in speaker line
Check A Board or replace speaker
9 times
FAN_ERR
Fan Error
Fan is not getting power.
Fan connector is not securely
attached.
Secure harness to fan.
Check CN4001 or CN5602 on FB1A
Board.
Check CN6900 on G Board.
10 times
DTT_ERR
Microprocessor Error
DTT_WDT (Watch Dog Timer)
Check FB1A Board
11 times
DEV_ERR
Device Error
I2C Communication Error
Check S2, H2, and C Boad and all
connection to the FB1A Board
LAMP-LED flashes

Lamp Error
Lamp needs to be replaced.
Change the lamp.


SELF-DIAGNOSTIC SELF CHECK SCREEN
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander within a second of each other:

DISPLAY >Channel 5 > Volume - > POWER


CLEARING THE SELF-DIAGNOSTIC SCREEN
The self-diagnostic results displayed on the screen are not cleared automatically, therefore you should always check the self diagnostic screen during repairs. When you have completed the repairs, clear the self-diagnostic screen to reset the results to “0”.
Note: The self-diagnostic function will not be able to detect any subsequent faults after completion of the repairs unless the Self-Diagnostic result display is cleared to reset the results to “0”.
1. If the Self-Diagnostic screen is already displayed, proceed to step 3. If not, Power off (Set to Standby mode).
2. Press DISPLAY > Channel 5 > Volume - >POWER
3. Press Channel 8 > 0 The status resets to 0.
4. To exit the Self-Diagnostic screen, turn the power off.

                SERVICE MODE 
ACCESSING SERVICE ADJUSTMENT MODE
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander within a second of each other:
DISPLAY > Channel 5 >  Volume + > POWER


VIEWING THE SERVICE MENUS
Use the Remote Commander to view the BE and Digital service menus options.
 To display the Service Menu that contains the Category you want to adjust, press JUMP on the Remote Commander.
ADJUSTING H/V CENTER
Check the picture horizontal/vertical center after replacing the Optics Unit Block or Rear Cover.
1. Check the H/V center using a 480i monoscope signal with the TV in “FULL’ model.
2. If the center is shifted, proceed to step 3.
3. Access the Service Menu by pressing the following buttons on the Remote Commander within a second:
DISPLAY > Channel > 5 > Volume + >TV POWER .
The service menu displays.
4. Press the JUMP button until the BEM micro service menu displays.

5. Press 2 until the 0016 TG category displays.
6. Press 1 until the 0003 VCENT item displays.
7. Press 3 to increase (shift VCENT up), or press 6 to decrease the value (shift VCENT down) until the correct adjustment is set.
8. Press 1 until the 0004 HCENT item displays.
9. Press 3 to increase (shift HCENT right), or press 6 to decrease the value (shift HCENT left) until the correct adjustment is set.
10. To write into memory, press MUTING then 0 on the Remote Commander.
EXITING SERVICE MODE
After completing the changes, exit service mode.
 To exit service mode, turn the power off by pressing POWER . Wait 2 minutes before restarting the set to allow the fans to completely shut down or the Service Menu will appear on the screen.
POWER SUPPLY CIRCUIT 

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Posted By: FRANK at 02:37
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