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.

How to use the site:

- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

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 30 July 2020

SAMSUNG CW21Z453 N LXXEC NARNIA CRT COLOR TV – SERVICE MODE, SERVICE ADJUSTMENTS, SOFTWARE UPDATE, SCHEMATIC DIAGRAMS, PWB LAYOUTS

 Ultra Slim Fit CRT, Multi Wide System, Turbo Plus, SOUND Equalizer - CW-21Z453N - S16C Chassis

Core Parts Functions
- TDA12025PQ : Video/Sound Processing1 x MICOM
- STR-W6750F : SMPS Power STR
- TDA7297SA : 5W ~ 15W Sound Output BTL AMP
- 24C16 : 16K EEPROM
- LA7845 : Vertical Deflection AMP
- C5936 : H-OUT S/W TR
- TDQ-6L : F/S PAL Tuner(LNA Option)
- TDA6107JF : R/G/B Drive AMP IC
- Flyback Trans : BSC29-0156G(11P,27KV)

Feature
- AKB(Auto Kinetic Bais)
- Comb Filter : 4H Comb Filter
- Picture Size : 4:3
- NICAM / STEREO / Line-STEREO
- Auto STEREO, Sound Equalizer, Auto Mute, Auto Volume Limit, PSEUDO STEREO, TURBO PLUS
- Composite (RCA A/V,DVD)
- Rear : 42P Scart Input/output (Scart1 R/G/B Input)
- Front or Side A/V Input (Side A/V Preferability), Headphone.

General Adjustment :
In general, a color TV can provide ideal visual quality by adjusting the basic settings such as the vertical size, horizontal size, focus, etc.
Display a black and white picture on the screen to check if the picture is clearly displayed.
If there are some 'spotted' points on the screen when displaying a black and white picture, degauss the screen using the degauss coil. If the spotted points remain, re-adjust the purity and the convergence.
This completes the basic performance examination.

These adjustments and the check list are only applied to S16C chassis-applied models.
Only use 230V for the measurement set. It is recommended using an insulation transformer when supplying power to the set so as to prevent shock to the set or to yourself.
These adjustment specifications have been created on the basis of the domestic S16C chassis-applied remote control model. Some of the contents may be changed subject to the sales location.

When replacing the MAIN Board : Tilt adjustment, Focus adjustment, Screen voltage, W/B adjustment are all required. Since the settings including the Channel information, Deflection, etc. are saved to the EEPROM, reconfigure these settings when replacing the MAIN Board.
The notation of the software information : 1. T-NARPEU-1000 refer to "NARNIA BASIC MODEL EUROPE.VER.1000"
Since the settings including the Channel information, Deflection, etc. are saved to the EEPROM, reconfigure these settings when replacing the MAIN Board.

2. When replacing the CRT Ass'y : No adjustments required.
3. When replacing the front panel Master Power switch : No adjustments required
4. When replacing the Side AV Ass'y : No adjustments required.
5. When replacing the PIP Module : No adjustments required.
6. When replacing the Control Ass'y : No adjustments required.
7. When replacing the PFC Ass'y : No adjustments required.

Service Mode

To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)

Info Menu Mute Power On

When failing to enter Service Mode, repeat the procedure above.

The initial screen of Service Mode.

Option1 XX XX XX XX XX
Option2
Deflection
WSS Deflection
Video Adjust1
Video Adjust2
Video Adjust3
Video Adjust4
Video Adjust5
YC Delay
Others
Bus Stop Off
CHECKSUM 0000
G2 Adjust
RESET
T-NARPEU-1000 2006/XX/XX

Functions of the Keys within Service Mode.

MENU > Show all menus.

/ ▼ > Move the cursor to select an item.

/ > Adjust the selected configuration value.

White Balance > x:286±3 y:290±3 Y:40±3 x:286±3,  y:290±3 Y:2.0±.3


Factory data




Software Upgrade.

1. Checking the Version of the Software (Analog SW)

1. To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)
Info 
→ Menu → Mute → Power On

2. When entering Service mode, the software information is displayed at the top of the service mode menu OSD. ex) T-HITPEU-1000 2005/0X/XX

Service Download Procedure.

Double click the your desktop “WISP” icon.

2. Check the standard.
- Check the appoint “Picasso N2”
- Check the “Flash selection” item is appoint “Manual”
- You can adjust program delay time for program speed but we use the normal “5[ms]”.
- Check the green lamp if this is sometime red lamp you can not programming.

3. Check the IIC line.
- Click the “Enter ISP Mode” button For IIC bus line problem or not,
- Change the “Press Send to enter ISP Mode”.
- Click the “Send” button.

4. Erase before program.
- Click the “Erase Flash” button for before program erase
- You can select flash selection item but we use normal “All” mode
- Change the “Select flash ROM to erase. When ready press Send.”
- Click the “Send” button

5. Write new program.
- Click the “Write Flash” button for new program download
- Change the “Load.hex file to program flashes.”
- Click the “Browse” button and find the new program folder in your computer
- Click the “Send” button.

6. Verify new program.
- Click the “Verify Flash” button
- Change the “Select flash to verify correct programming.
When ready press Send.”
- Click the “Send” button.

Adjusting the Focus.

Since the S16C chassis has a built-in single focus circuit, take care when adjusting the focus. 

When the CRT PCB, FBT or CRT has been replaced, the focus has to be adjusted according to the following procedures.

1. Display the CROSS Hatch pattern.
2. Set the Screen Adjustment to "View as Standard".
3. Turn the Static Focus VR clockwise to the maximum position.
(End of clockwise direction)
4. Slowly turn the Static Focus VR counter clockwise so that the center vertical line
is the most clearly displayed. [adjusted point : Center(2/1)]

5. Check the entire screen focus and repeat steps 3 to 4, if necessary.

Adjusting the Screen Voltage.

1. Select "Power Off Info Menu Mute Power On" to enter Service Mode.
2. Initialize all settings to the values appropriate to the corresponding model.
3. Display the Toshiba pattern.

4. First check IBRM in "G2 Adjust" of Factory and adjust Screen VR until the color of IBRM item turns green.

Adjusting the White Balance

1. Initialize all settings to the values appropriate to the corresponding model.
2. Select "Info
Menu Mute Power On" to enter Service Mode.
3. Initialize all settings to the values appropriate to the corresponding model.
4. Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model.

5. Enter Video Adjust1 of Service Mode. Adjust Low/Light.
- Adjust Sub Bright to set Y.
- Adjust B Cutoff to set y.
- Adjust R Cutoff to set x.

6. Enter Video Adjust1 of Service Mode. Adjust High/Light.
- Adjust Sub Contrast to set Y.
- Adjust B Drive to set y.
- Adjust R Drive to set x.

7. Check Low/Light and readjust it if its value has been changed.

8. If you have readjusted Low/Light, readjust High/Light until the two values are identical to the coordinates of the corresponding model.

White Balance Standard Data.

Check List for the Screen Voltage and White Balance Adjustment.

1. The Screen Voltage and White Balance are connected each other, and both of them have to be configured to the correct values.
2. Adjust the White Balance after the Screen Voltage was adjusted, and check if the Screen Voltage is normal after adjusting the White Balance.
3. If the White Balance is readjusted, check the Screen Voltage again.
4. When the adjustment is finished, check the following checklist.
- If there is a spot on the screen when turning the TV set off/on, adjust the Screen Voltage again.
- If there is a ghost line on the screen, adjust the Screen Voltage again.

Names & Roles of Key Parts.
* CN601 : A 4 pin port connected to the SPEAKER port, which delivers the signal from the AMP to the speakers.
* CN602 : A 5 pin port connected to the AV ASSY, which delivers the signal to the headphone.
* CN501 : A 9 pin port connected to the CRT ASSY, which outputs the R/G/B signal to the CRT ASS'Y for display and Power signals to the CRT DRIVE.
* CN701 : A 8 pin port connected to the AV ASSY, which receives AV2 external input.


Main board and connector board functions.

Schematic diagram – Power.

Schematic diagram  - Main.

Schematic diagram – CRT and Sound.