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 !

Saturday 30 March 2019

TOSHIBA 43VJ13 – PROJECTION TV – SERVICE MODE – SMPS SCHEMATIC

TOSHIBA 43VJ13 – PROJECTION TV – SERVICE MODE – SMPS SCHEMATIC

Power Supply Schematic _ Service Mode _ Design Mode _ Universal Remote Control Set-up Codes
SERVICE MODE
* Press the ‘Mute’ button once on Remote Control.
* Press the ‘Mute’ button again to keep pressing _ While pressing the ‘Mute’ button, press MENU button on TV set.  Service mode display screen will be displayed.
* Press MENU button on TV.  Service adjustment screen will be displayed.
KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Screen adjustment mode ON/OFF:
+ / - button (on Remote)

Test signal selection :
 Power  button (on Remote)

Selection of the adjustment items
Channel Up / Dn (on TV or Remote

Change of the data value
Volume ; +/– (on TV or Remote)

Adjustment menu mode ON/OFF
MENU button (on TV)

Initialization of the memory (QA02)
CALL + Channel button UP on TV

Reset the count of operating protect
circuit to “00
CALL + Channel button on TV DN)

“RCUT” selection
1 button

“GCUT” selection
2 button

“BCUT” selection
3 button

“SCNT” selection
4 button

“COLP” selection
5 button
Color thickness correction
“TNTC” selection
6 button
Note: Displayed differently as shown below, depending on the setting of the receiving color
system.
COLP (PAL)
COLC (NTSC)
COLS (SECAM)
Convergence adj
YELLOW button

Self diagnostic display ON/OFF
9 button


Never try to perform initialization unless you have changed the memory IC.

SELECTING THE ADJUSTING ITEMS
Every pressing of CHANNEL UP button in the service mode changes the adjustment items. (DN button for reverse order)
ADJUSTING THE DATA
 Pressing of VOLUME  +/–  button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
EXIT FROM SERVICE MODE
Pressing POWER button to turn off the TV once.
INITIALIZATION OF MEMORY DATA OF QA02
After replacing QA02, the following initialization is required.
* Enter the service mode, then select any register item.
* Press and hold the CALL button on the Remote, then press the CHANNEL s button on the TV. The initialization of QA02 has been completed.
* Check the picture carefully. If necessary, adjust any adjustment item above.  * Perform “Auto search Memory” on the owner’s manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
TEST SIGNAL SELECTION
Every pressing of ‘Power’  button on the Remote Control changes the built-in test patterns on screen as described below in SERVICE MODE
Signal off  >  PAL signals (5 patterns) > NTSC signals (5 patterns) & repeats
SELF DIAGNOSTIC FUNCTION
Press “9” button on Remote Control during display of adjustment menu in the service mode.  The diagnosis will begin to check if interface among IC’s are executed properly.
Indicated color of mode now selected : Green and Red
Indicated color of other modes : Black
Green :Normal
Red : The microcomputer operates to provide judgment of no video signal. The red color is still indicated though the signal is input, failure may exist in input signal line including QV01.
Part number of microcomputer (QA01)
Total hour of turn the TV on. (Unit: H)
Operation number of protecting circuit ----“00” is normal.
When indication is other than “00”, over current apts to
flow, and circuit parts may possibly be damaged.
BUS CONT ----“OK” is normal.
When indication shows “Q 000 NG”, the device with the number may possibly be damaged.
BLOCK
UV : TV reception mode
V1 : VIDEO 1 input mode (Power 1)
V2 : VIDEO 2 input mode (Power 2)
V3 : VIDEO 3 input mode
V4 : VIDEO 4 input mode
DESIGN MODE
Select the Service mode.
While pressing CALL button on Remote  and press MENU button on TV.
Press MENU button on TV
When QA02 is initialized, items “OPT0”, “OPT1 ” and "OPT2" of DESIGN MODE are set to the data of the representative model of this chassis family.
There fore, because ON-SCREEN specification remains in the state of the representative of model. This model is required to reset the data of items “OPT0”, “OPT1 ” and "OPT2".
SELECTING THE ADJUSTING ITEMS
Every pressing of CHANNEL DN button in the design mode changes the adjustment items.  (UP button for reverse order)
ADJUSTING THE DATA
Pressing of VOLUME UP or DN button will change the value of data.
Universal Remote Control set-up codes to check.
0018 0025 0039 0044 0045 0075 0101 0119 0128 0141 0143 0145 0165 0195 0227 0247 0369 0379 0460 0642 0658 0713 0810 0813 0814
SMPS [Power Regulator] Schematic