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 !

Monday 11 March 2019

TOSHIBA 32AV505D SERVICE MODE AND POWER SUPPLY CIRCUIT

TOSHIBA 32AV505D SERVICE MODE AND POWER SUPPLY CIRCUIT




TOSHIBA 32AV505D



SERVICE MODE AND POWER SUPPLY CIRCUIT 


Service Mode

1. Set VOLUME to minimum and press MUTE  button once on remote control.

2. Press MUTE button again and hold button down.

3. While holding the MUTE button, press MENU button on TV set.

Selecting the Adjusting Item

Every pressing of CH UP button in the service mode changes the adjustment items in the
order of table below. ( DOWN button for reverse order)

SETTING & ADJUSTING DATA
[ SERVICE MODE ]
ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:
Note:
The image system data of RCUT-BDRV is different by each image format. MNever adjust H.POS and V.POS except PAL/WIDE mode.

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.

I2C Bus Off
Turn off I2C communication between IC700 and IC400.
1) Press and hold the CALL button on the remote control, then press the Volume + button on the TV.
2) Display "BUS Off" OSD.
3) I2C communication turned off.

Note:
To return Bus on status, press and hold the CALL button on the remote control, then press the Volume + button on the TV again. TV will be turned off and automatically turned on, then status will be Bus On.

Setting TVOP
Enter to service mode and select menu of TVOP by pressing P UP or P DOWN during display of adjustment menu. After selecting TVOP, press VOLUME + or VOLUME - to set I2C check function to disable or enable.

Setting Panel Option Data
TVOP FUNCTION DESCRIPTION 1 0 (Normal)
D5 (bit5) I2C check between IC700 and IC400. (WDT) Disable Enable
Panel option data is subject to OP4 and OP5.

Enter to service mode and select menu of OPT4 or OPT5 by pressing P UP or P DOWN during display of adjustment menu. After selecting OPT4 or OPT5, press VOLUME + or VOLUME - to set OPT4 or OPT5 value

Exit from Service Mode
Pressing POWER button to turn off the TV once.

Initialization of Memory Data of QA02 and Setting Data of Signal Unit

After replacing QA02 or signal board, the following initialization is required.

CAUTION: Never attempt to initialize the data unless QA02 has been replaced. Whenever using new signal board to the set, setting the Model ID data according to Panel option data.
1) Enter the service mode.
2) Select menu of ID by pressing P UP or P DOWN  during display of adjustment menu in the service mode.
3) Change ID data into MODEL ID to initialize by pressing V+ or V-.
4) Press and hold the CALL button on the remote control, then press the CHANNEL UP button on the TV.
5) Initialization progress dialog including model name and panel vendor is shown. Progress status is "WRITING".
6) Progress status is changed "OK" and power cycle (automatically). Then QA02 initialization has been completed.
7) Enter the service mode and select version check mode. Confirm if model name and model id set is correct. If not, repeat steps 1) to 6).
Note:
In case initialization by setting wrong MODEL ID is done, there is a possibility of abnormal display. 8) Set I2C check function of TVOP to enable

8) Set I2C check function of TVOP to enable.

9) Check the picture carefully. If necessary, adjust any adjustment item above. Perform "Auto tune" on the owner's manual.

Self Diagnostic Function
1. 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 is executed properly.
2. During diagnosis, the following displays are shown.
* Self check display and Item are subject to the models.

Version Check Mode

1. Press "9" button twice on remote control during display of adjustment menu in the service mode.
The version of main MPU will be checked.
2. During Version Check, the following displays are shown.
* Version check display and Item are subject to the models.

(1) MAIN MPU :
Version information of microprocessor
Series name and Code Program Version (4 figure number) and OSD Version (2 figure
number).
(2) EEPROM :
Version information of EEPROM : Display 1 byte data.
(3) SUB MPU :
Version information of SUB MPU : Display 1 byte data.
(4) OPTION :
Option information : Display six numbers of 1 byte data.
(5) HDMI ID :
HDMI ID information : Display 4 byte data.
(6) SW Ver
Version information of DB software as Toshiba release. (Only digital model.)
(7) MW Ver
Left side is Application and UI version information of DB software. (Only digital
model.)
Right side is Firmware (Driver) version information of DB software. (Only digital
model.)

(8) A/D Adjust
A/D adjustment item.
--MAIN : It's enable only in double Window model. A/D adjustment status of main
picture.
--SUB : It's enable only in double Window model. A/D adjustment status of sub
picture.
--COMP : Component input
--PC : PC input
--NTSC : NTSC (60 Hz) SD signal (composite input).
--PAL : PAL (50 Hz) SD signal (composite input).
--OK : A/D adjustment set correctly.
--NG : A/D adjustment set incorrect.
-- : A/D adjustment is not needed. Because its picture format isn't used.
(9) 100 Hz FPGA Software Version
It's enable only in 100 Hz drive panel model.
(10) Memory Data Version
Version information of EEPROM.
DRMA**** means model number of EEPROM.
REV** means version of EEPROM.
(11) CD number
CD information (ascii code). : Display 4 byte data.
(12) Model Name
Model name information (ascii code). : Display 7 byte data.
(13) LCD Panel Vendor information display
The following Panel Vender (DDD) and screen size (00) and resolution (EEE) are displayed.
Example : AUO-32 (1080p) indicates that Vender is AUO and Screen Size is 32 inch and Full HD panel.

Status Check Mode
1. Press "9" button thrice on remote control during display of adjustment menu in the service mode.
The status of this model will be checked.

2. During Status Check, the following displays are shown.
* Status check display and Item are subject to the models.

(1) MAIN :

Main source information :
Display RF position number (0 - 99) on the main screen, or Input Source
(EXT1/2/3/HDMI etc.)
(2) MAIN FORMAT :
Display Video and PC format information
(3) MAIN PLL :
Main PLL information : Display 1 byte data at five.
(4) SUB :
Sub source information :
Display RF position number (0 - 99) on the Sub screen, or Input Source
(EXT1/2/3/HDMI etc.)
This item displays only Double window model.
(5) SUB FORMAT :
Display Video and PC format information
This item displays only Double window model.
(6) SUB PLL :
Sub PLL information : Display 1 byte data at five.
This item displays only Double window model.
(7) SCREEN SIZE

Note:
Exact Scan is shown only for 1080p panel model with video input mode except pc.
(8) OTHER STATUS :
Other status information : Display three numbers of 2 byte data.

Setting Hotel Mode
Enter to service mode and select Hotel Mode menu by pressing P UP or P DOWN . After selecting Hotel Mode, press V + to enter details setting in Hotel Mode. To select menu, press P UP or P DOWN  and press OK to enter the adjustment menu. To move the cursor in the adjustment, press V+ orV-.
1. By pressing P UP or P DOWN , OPT2 setting will change the value either 1 or 0 .
LED Indication
The Green and Red LEDs on the TV (at the bottom center of the TV) indicate the TV's status, as described below.
 Red ON (solid) and Green OFF = The TV power cord is plugged in.




POWER SUPPLY CIRCUIT 


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Posted By: FRANK at 03:12
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