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 !

Friday 1 March 2019

SAMSUNG CRT TV CS14 CS21 – SERVICE MODE – ADJUSTMENTS - CIRCUIT DIAGRAM

Samsung CRT TV CS14 CS21 – Service Mode – Adjustments - Circuit Diagram


Samsung CS14F10MJ0XBWT CS20F10MJ0XBWT CS21F10MJ0XBWT CZ21A083NXXEG COLOR TELEVISION RECEIVER – How to enter and adjust data values in Service Mode – Default data values – Service mode adjustments – Schematic
Factory Mode [Service Mode]
1. Do not attempt these adjustments in the Video Mode.
2. The Factory Mode adjustments are necessary when either the EEPROM (IC902) or the CRT is replaced.
3. Do not tamper with the “Adjustment” screen of the Factory Mode menu. This screen is intended only for factory use.  When EEPROM (IC902) Is Replaced
1. When IC902 is replaced all adjustment data revert to initial values. It is necessary to re-program this data.
2. After IC902 is replaced, warm up the TV for 10 seconds.
When CRT Is Replaced

1. Make the following adjustments AFTER setting up after setting up purity and convergence :
White Balance
Sub-Brightness
Vertical Center
Vertical Size
Horizontal Size
Fail Safe (This adjustment must be the last step).
2. If the EEPROM or CRT is replaced, set PVA to 40 (factory mode) and set SC as follows.
14 inch : 0
20 inch : 9
21 inch : 9
Procedure for the “Adjustment” Mode
1. This mode uses the standard remote control.  The Service Mode is activated by entering the following remote-control sequence :
(1) DISPLAY=>FACTORY.
(2) STAND-BY=> DISPLAY=> MENU => MUTE => POWER ON.
2. The “SERVICE (FACTORY)” message will be displayed. The Service Mode has four components: ADJUST, OPTION and Reset.
3. Access the Adjustment Mode by pressing the
“VOLUME” keys ( Up or Down). The adjustment parameters are listed in the accompanying table, and selected by pressing the CHANNEL keys (▲/ ▼)
4. Selection sequences for the all system:
DOWN or UP key:
SCT>SBT>BLR>BLB>RG>GG>BG>VSL> VS>VA>HS>SC>SDL>STT>SSP>PDL> NDL>PSR>NSR>AGC>VOL>LCO>TXP
5. The VOLUME keys increase or decrease the adjustment values (stored in the non-volatile memory) when Adjustment Mode is cancelled.
6. Cancel the Adjustment Mode by re-pressing the “FACTORY” or “Power OFF” keys.
Default data values and options
Click on the pictures to zoom in
Circuit Diagram (Schematic)
White Balance Adjustment
Warm up the TV for at least 30 minutes in the Aging Mode (OSD White). This mode is displayed by entering the following sequence:
DISPLAY => FACTORY => FACTORY
2. Input a Toshiba pattern.
(b) Low-Light Adjustment
1. Set SBT to 3.5 ± 0.5 fL in the Factory Service Mode with using CA100.
2. Adjust RG,BG so that the levels are suitable to each local area.
(c) High-Light Adjustment
1. Set SCT to 55 FL (20”. 21”), 65 FL(14”) in the Factory Service Mode with using CA100.
Center Convergence Adjustment
1. Warm up the receiver for at least 20 minutes.
2. Adjust the two tabs of the 4 pole magnets to change the angle between them. Superimpose the red and blue vertical lines in the center area of the screen.
3. Adjust the Brightness and Contrast controls for a well defined picture.
4. Adjust the two-tab pairs of the 4 pole magnets, and change the angle between them.  Superimpose the red and the blue vertical lines in the center area of the screen.
5. Turn the both tabs at the same time, keeping the angle constant, and superimpose the red and blue horizontal line in the center of the screen.
6. Adjust the two-tab pairs of the 6-pole magnets to superimpose the red and blue line onto the green. (Changing the angle affects the vertical lines, and rotating both magnets affects the horizontal lines.)
7. Repeat adjustments 2~6, if necessary.
8. Since the 4-pole magnets and 6-pole magnets interact, the dot movement is complex
Posted By: FRANK at 02:05
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