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 !

Thursday, 28 March 2019

PANASONIC TC L37C22 – SERVICE MODE – HOTEL MODE- STANDBY LED BLINKING CODES

PANASONIC TC L37C22 – SERVICE MODE – HOTEL MODE- STANDBY LED BLINKING CODES

PANASONIC TC L37C22 - 37 inch Class 720p LCD HDTV – SERVICE MODE – HOTEL MODE- STANDBY LED BLINKING CODES - Hotel Mode - SMPS SCHEMATIC - DATA COPY  
POWER BOARD CIRCUIT DIAGRAM and VOLTAGES
Power board voltages
17V  TP7952 - TP7953 18 ± 2 V
DTV12V TP7954 -  TP7955 12.2 ± 0.6 V
TUNER6V - TP7956 6.1 ± 0.3 V
Power LED Blinking timing chart
When an abnormality has occurred the unit, the protection circuit operates and reset to the standby mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
Check of the IIC bus lines
Self-check indication only
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit Disconnect the AC cord from wall outlet.
Data copy from TV set to SD Card
1. Turn on the TV set.
2. Insert SD card with a start-up file (pwd file) to SD slot.
On-screen Display will be appeared according to the start-up file automatically.  
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2770
(b) For Hotel: 4850
Data will be copied from TV set to SD card.  It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to SD card, remove SD card from TV set.
5. Turn off the TV set.
Note  Following new folder will be created in SD card for data from TV set.
(a) For Board replacement: user_setup
(b) For Hotel : hotel
Data copy from to SD Card to TV set
1. Turn on the TV set.
2. Insert SD card with Data to SD slot.  On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2771
(b) For Hotel: 4851
Data will be copied from SD card to TV set.
4. After the completion of copying to SD card, remove SD card from TV set.
(a) For Board replacement: Data will be deleted after copying (Limited one copy).
(b) For Hotel: Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note 
1. Depending on the failure of boards, function of Data copy for board replacement does not work.
2. This function can be effective among the same model numbers.
Data Copy by SD Card
Purpose
(a) Board replacement (Copy the data when exchanging A-board):
When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.
(b) Hotel (Copy the data when installing a number of units in hotel or any facility)
When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other TVs.
Preparation
Make pwd file as startup file for (a) or (b) in a empty SD card.
1. Insert a empty SD card to your PC.
2. Right-click a blank area in a SD card window, point to New, and then click text document. A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name for (a) or (b) and press ENTER.
File name (a) For Board replacement : boardreplace.pwd
(b) For Hotel : hotel.pwd
Note
Make only one file to prevent the operation error.  No other file should be in SD card.
Hotel mode
 Access command to the Hotel mode set-up menu.  In order to display the Hotel mode set-up menu, enter the following command (within 2 second).
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times)
Then, the Hotel mode set-up menu is displayed.
To exit the Hotel mode letup menu; Disconnect AC power cord from wall outlet.
SRV-TOOL
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].
POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note  This indication will not be cleared by either of the self-checks or any other command.
To Exit Disconnect the AC cord from wall outlet.
To enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
Key command
1 =► button...Main items Selection in forward direction
2 =► button...Main items Selection in reverse direction
3 =► button...Sub items Selection in forward direction
4 =► button...Sub items Selection in reverse direction
[VOL] button =► Value of sub items change in forward direction ( + ), in reverse direction ( - )

Posted By: FRANK at 02:34
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