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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Tuesday 12 March 2019

SCHNEIDER 30M901 SERVICE MODE ADJUSTMENTS

SCHNEIDER 30M901 SERVICE MODE ADJUSTMENTS 

LCD TV SERVICE MODE ADJUSTMENTS 


SERVICE MODE
Pressing“ i”key in RC to enter into User Menu, pressing pin“ 6”“ 4”“ 0”“ 5”keys to Factory Menu.
pressing “EXIT” to exit.
Checking of Analog Main Board
Procedures：
1） Inserting P1, P2, P14 in Digital Board to P1001, P1002 and P5540 in Analog Board；
2） Connecting Computer to S5504 via COM connector, turning off the reset switch in the connector；
3） A. Setting PC mode in Digital Board;
B. Switching on the unit with RC;
C. After Screen is on, running FLASH PROGRAM for 2 seconds in Computer Communication Program;
D. Turning on the reset switch in the connector, then carrying out the program to burn；
4） After burned, please take out the S5504 connector；
5） Switching offÆResetÆpower on with RC, pressing “0” key and “OK” key to enter TV mode, the Noise Signal will be displayed, press“ i” in RC to enter into User Menu, and setting OSD to ENGLISH or other languages；
6） Making an elementary setting in PICTURE menu: Brightness ---- 50, Contrast ---- 70, Color ---- 40, Tint ----10
7） Pressing “OK” to save and “exit”；
8） Pressing “i” and “CH-” to select and “CH+” to enter into PROGRAM menu, pressing “CH-”to select “SEARCH >”, and pressing “VOL +” to searching channels. Press EXIT to exit when finished；
9） Checking all channels to see whether the sound and picture are OK or not. Signal should be switched after applying SCART signal. Input and output function should be checked in SCART 1 & SCART 2. There is not output function in SCART 3. (“ 0” key in RC to open menu, “V” key to OK).
Adjustment of Digital Board
Procedures：
1） A. Inserting P1 (8pins) in Digital Board to P1001 in Analog Main Board;
B. Connecting P14 in Digital Board to P5540 in Analog Main Board via 10Pins Line;
C. Connecting P24 in Digital Board to P1004 in Analog Main Board via line;
D. Inserting INVERTER switch Plug to P7 (Pin 3-5);
E. Connecting P2 in Digital Board to P1002 in Analog Main Board via line;
2) Inserting DC Plug in Extra Power Supplier to P18 in Digital Board, turning on the main power switch to electrify CPU (3.3V) in Digital Board;
3) A. Switching on the Unit using RC;
B. Electrifying Analog Board with 12V, +5V to IC JACASM in Digital Board simultaneously;
C. After several seconds, sound and picture will be OK. (TV mode is in normal mode without SCART Signal)
4) Applying TV signal (Gray Scale and Color Bar Signal), pressing “0”, “6”, “4”, “0”, “5” in RC, the AD9883 menu will be displayed.
Pressing “OK” to save and“ EXIT” to exit；
* Note: Best Resolution： 1024X768 60Hz mode.
6) DVI checking
Procedures：
1 Inserting DVI plug into P10 in Digital Board；
2 Pressing “ 0” in RC to enter into signal menu, pressing “CH+/CH-” to choose “DVI” and “OK” to enter into DVI mode；
3 Applying the kinds of testing signal, whether they all can be identified and the output are normal in DVI signal sources；
4 Entering into main signal menu and setting into the “TV” mode；
5 Taking out DVI plug and shutting off AC power supply.
Adjustment of Complete LCD TV
Procedures：
Adjustment of AGC
1. Power on the Unit and applying the TV signal sources. TV signal sources setting as below：
f=48.25MHz
System: PAL B/G
Signal： Full color bar
Intension： 65dB；
2. Pressing “ i” key in RC to enter into User Menu, pressing pin “ 6”“ 4”“ 0”“ 5” keys to Factory Menu, pressing << key to select item, “V+& V-” to adjust the data. Setting AGC data to 14 to obtain the Noise of Screen Signal is at minimum. DVSS: ON
3. Setting BURN IN at On ( Analog Board is on when no signal, Normal User mode is OFF) LCD TV TCL Ver. 1.22B/13/10/2003 (Update irregularly)
Auto Format 4:3
Tuner AGC 14
Transparent OSD 66
DVSS ON
Burn-in Mode ON
Min.volume.1% 10
Sound curve.10% 64
Sound curve.20% 86
Sound curve.40% 105
Sound curve.80% 121
Sound curve.100% 127
4. Pressing“ EXIT” to exit
Adjustment of White Balance in VGA mode
1. Applying VGA signal, 1024 X 768 60Hz, switching signal source to PC mode,
9300K.
2. Choosing White Signal, using Color Temperature Instrument or White Balance Instrument to test the color coordinate.
3. Pressing“0”, “6”, “4”, “0”, “5” key in RC to enter into Factory Mode, pressing “CH+, CH-” to select item, “V+, V-” to adjust R、 G、 B data to obtain x=284+5，
Y==299+5；
4. 7000K X=305+15， Y==320+15 (no use now)
5. 7500K X=299+15， Y==315+15 (no use now)
AUTO Adjustment of User Setting in VGA mode
1. Applying Square Signal, pressing “ i” key in RC to enter into User Menu.
2. Pressing “CH+, CH-” to select “AUTO” item, and “V+” to active the auto adjustment then screen will be dark instantly. If finished, screen will be ok automatically.
3. If auto adjustment lost or some disturb/noise in screen, please adjust PHASE by manual.
Applying signal modes：
640 X 480 (60, 72, 75, 85Hz)
720 X 400 (60, 70Hz)
800 X 600 (60, 75, 85Hz)
1024 X 768 (60, 75, 85Hz)
1280 X 1024 (60, 75, 85Hz)
To do the checking and auto adjustment separately when applying the kinds of signals, if no problem exists, it is unnecessary to adjust the data in EEPROM.
Adjustment of White Balance in TV mode.
1. Applying SCART White Signal, using White Balance Instrument to test.
2. Pressing “0”, “6”, “4”, “0”, “5” key in RC to enter into Factory Mode, pressing “CH+, CH-” to select item, “V+, V-” to adjust R、 G、 B data to obtain X=0.284, Y=0.299, color temperature: 9300, Luminance> 400cd.
3. Pressing“ EXIT” to exit.
Checking Complete LCD TV
1. Applying TV signal to check whether AGC can work normal.（ 40~100dB TV
signal).
If AGC is abnormal, please do fine tuning. (If overloading, please lower AGC Value)
2. Applying SCART signal to check whether the input and output of SCART can work normal in R、 G、 B、 Y/C、 SCART, 16:9/4:3 mode.
3. Applying VGA signals to checking: 640 X 480 (60, 72, 75, 85Hz) 720 X 400 (60, 70Hz)
800 X 600 (60, 75, 85Hz)
1024 X 768 (60, 75, 85Hz)
1280 X 1024 (60, 75, 85Hz)
4 Checking PIP in TV Signal (VGA mode)
a. Pressing “ 0” to choose PC mode and“ OK” to enter into VGA mode, applying VGA signal.
b. Pressing  > key in RC to active PIP function, pressing this key continuously to scale up the PIP picture and disappeared circularly , there are four scales.
c. Pressing “<< ” key to locate the PIP picture from Top-left, Top-right, Bottom-right, Bottom-left and center circularly.
d. Pressing > key in RC to close the PIP when the picture is in largest scale.
d. Press Green Key in RC can switch the PIP signal source.
5 Checking PIP in DVI mode Pressing “ 0” to choose PC mode and“ OK” to enter into DVI mode. Repeat 4 to check PIP scale and location.
6 Safety Checking a. AC 3000V; b. Resistance> 4MΩ
7 Default data setting: Applying factory signal, setting the data to default when in best picture, best sound
and so on.
Posted By: FRANK at 10:37
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