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 !

Thursday, 28 February 2019

TOSHIBA 49LV685D – LCD TV – HOW TO ENTER SERVICE MODE – HOTEL MODE – DTV FIRMWARE – HOTEL MODE

Toshiba 49LV685D – LCD TV – How to enter Service Mode – Hotel Mode – DTV firmware – Hotel mode

How to enter Service Mode - How to enter Hotel mode - Firmware update - Service mode adjustments - Toshiba 49LV685 LCD TV
Service Mode
Press the Mute button once on remote control.
Press the Mute button again and hold button down.
While holding the Mute button, press MENU button on TV set.
Never try to perform initialization unless you have changed the memory IC.
Test signal selection
Selection of the adjustment items:  PROGRAMME ▲/▼  (on TV or remote control)
Change of the data value:  Volume +/- (on TV or remote control)
Adjustment menu mode:  ON/OFF MENU button (on TV)
Initialization of the memory (IC510):  "i+" + PROGRAMME ▲button on TV
Reset the count of operatingprotect circuit to "00": "i+" + PROGRAMME ▼ button on TV
Turn off TV Micro I2C bus communication "i+" + Volume ▲button on TV
"RCUT" selection 1 button
"GCUT" selection 2 button
"BCUT" selection 3 button
"CNTX" selection 4 button
"COLC" selection 5 button
"UVTT" selection 6 button
Automatic A/D Adjustment
(PC, Component, Composite (PAL, NTSC)) 7 button.
Every pressing of PROGRAMME ▲ button in the Service Mode changes the adjustment items. (▼ Button for reverse order)
RCUT RED CUT --
GCUT GREEN CUT --
BCUT BLUE CUT --
RDRV RED DRIVE --
GDRV GREEN DRIVE --
BDRV BLUE DRIVE --
BRTC BRIGHTNESS CENTER --
COLC COLOR CENTER --
UVTT BASE BAND TINT --
CNTX CONTRAST MAX --
OPT1 TV SET OPTION 1 00F1
OPT2 TV SET OPTION 2 00F2
OPT3 TV SET OPTION 3 00F3
OPT4 TV SET OPTION 4 (PANEL OPT DATA FOR VENDOR & SIZE) 00F4
OPT5 TV SET OPTION 5 00F5
SETID MODEL ID 00FE
OPT6 TV SET OPTION 6 00E8
OPT7 TV SET OPTION 7 00E9
OPT8 TV SET OPTION 8 00EA
HTLID HOTEL ID 00E0
VOLX MAXIMUM VOLUME LEVEL –
Factory preset data will be loaded after setting Model ID 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.
Setting TVOP
Enter Service Mode and select menu of TVOP by pressing P Up or P Dn during display of adjustment menu. After selecting TVOP, press Vol + or Vol - to set I2C check function to disable or enable as below.
TVOP: D5 (bit5)
FUNCTION DESCRIPTION: I2C check between TV-Micro and Standby-Micro (WDT)
1: Disable
0 (Normal): Enable
Setting Panel Option Data
Enter Service Mode and select menu of OPT4 by pressing P Up or P Dn during display of adjustment menu. After selecting OPT4, press Vol + or Vol- to set OPT4 value as table below.
OPT4
Ex. OPT4 value 0x65 indicates that panel vendor is SAMSUNG and panel size is 32.
Upper 4bit is decided as below table.
The table for converting from bit (D7-D0) to hex (0x**).
To Exit; Press POWER button to turn off the TV once.
Initialization of TV Micro Data
After replacing Digital Board, the following initialization is required.
1) Enter Service Mode.
2) Select menu of ID by pressing P Up or P Dn during display of adjustment menu in the Service Mode.
3) Change ID data into MODEL ID to initialize by pressing Vol+ or Vol-, refer to "MODEL ID TABLE".
For example, if want to initialize 40LV685D, change MODEL ID into "0x3E". Note: MODEL ID is hex value.
4) Execute initialization of the memory.
Refer to "KEY FUNCTION IN THE SERVICE MODE".
Press "i+" + PROGRAMME Up button on TV.
5) Enter Service Mode and select Version Check Mode. Confirm if the model name and MODEL ID set is correct. If not, do over again from the start.
In case initialization by setting wrong MODEL ID is done, there is a possibility of abnormal display.
6) 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 displays and items are subject to the models.
TV CPU SW Version:
Version information of TV Micro SW: Display 1 byte data. (Hex)
EEPROM Version:
Version information of TV Micro EEPROM: Display 1 byte data. (Hex)
Power On Time: Total time the TV has been powered on. (Unit: Hours) (Decimal)
Main PLL: Displays Data 11 - Data 18 (8 bytes) of tuner control data. (Hex)
BL_STATUS:
BL_STATUS 1 : The total number of times that the panel did not light. (backlight doublelight also failed) (Decimal)
BL_STATUS 2 : The number of times that the backlight failed to light. (Decimal)
Block:
TV Status: "official" is normal.
Block:
BL_STATUS 1 : The total number of times that the panel did not light. (backlight doublelight also failed) (Decimal)
BL_STATUS 2 : The number of times that the backlight failed to light. (Decimal)
UV : ATV reception mode
V1 - V7 : VIDEO 1-7 input mode.
DTV : DTV mode
For current input: OK: Signal Sync Detected
NG: No Sync Detected
TV Status: "official" is normal.
Version Check Mode
1. Press "9" button twice on remote control during display of adjustment menu in the Service Mode.
2. During Version Check, the following displays are shown.
* Version check displays and items are subject to the models.
Setting Hotel Mode
Hotel Mode allows the customized settings for following hotel options according to various hotel requirements.
Enable/Disable all Front Panel keys.
Enable all Front Panel keys except for Input Selection key.
Enable/Disable the remote control.
Disable access to all Setup menu items except for Language Setting.
Disable access to the Setup menu (grayed out).
Limit the maximum Volume level.
Force POS/VIDEO Channel/Input, when the TV is turned on.
Force volume setting, when the TV is turned on.
Force picture setting when the TV is turned on.
Force the TV on while main power (AC power) is ON.
There are three ways to set up Hotel Mode Options: via Service Mode, Hotel Mode Settings menu, and Hotel Clone menu.
Setting Hotel Mode via Service Mode
Enter Service Mode and select Hotel Mode menu by pressing P Up or PDn .
After selecting Hotel Mode, press Vol+ to enter details setting in Hotel Mode.
To select menu, press P Up or P Dn and press OK to enter the adjustment menu of following table data.
To move the cursor in the adjustment, press Vol+ or Vol-.
By pressing P Up or P Dn, following table data setting will change the value either 1 or 0 on selected items.
Setting Hotel Mode via Hotel Mode Settings Menu
Press the Mute button once on remote control.
Press the Mute button again and hold button down.
While holding the Mute button, press P DN button on TV set.
To enable Hotel Mode, use the Left or Right buttons to select "On" while "Hotel Mode" item is highlighted. When Hotel Mode is on, the various options are enabled.
Press Up and Dn buttons to select the item, and then press Left and Right buttons to change the setting.
Press [Exit] button to finish Hotel Mode setting.
Panel Identification
If the several panels are alternatively used in the same model without amending the model name, the identification marking will be shown at the last digit of the set serial number on the specification label on the back cover.
In servicing, do not alter the panel because several setting and parts are different.
DTV Software Update - While Watching TV
1. Extract the update files onto a USB drive.
2. Turn on the TV set.
3. Connect the USB drive to the USB port on the side panel.
4. Highlight OK and press the OK key on the remote.
5. The status of the update is displayed during update.  Never turn off the power while updating.
6. When the update is complete, the following message is displayed.
7. Disconnect the USB drive.
8. The TV set is automatically turned off and then on.
DTV Software Update - from Boot Up
1. Extract the update files onto a USB drive.
2. Unplug the TV.
3. Connect the USB drive to the USB port on the side panel.
4. Press and hold the menu button on the control panel of the TV set.
5. Plug in the TV and watch the LEDs on the front of the TV set.
a. After several seconds, the orange PowerOn/Standby LED and the green OnTimer LED light is on, indicating that the TV set is being updated.
b. Once the update started, release the menu button.
6. When only the PowerOn/Standby LED is turned to green, the update has completed successfully.  If the update is unsuccessful, the Power On/Standby LED is red.
7. Unplug the TV set.
8. Disconnect the USB drive.
Posted By: FRANK at 06:03
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