Toshiba DL2970 – Toshiba DL3270 - Toshiba DL3970 – How to enter service mode – Circuit Diagram – How to Unlock

DL2970(A)W– DL3270(A)W  - DL3970(A)F – TOSHIBA 29, 32 and 39 inch LED LCD TVs -  Firmware(Software) upgrade – Service Mode – Schematic Diagram - Used Semiconductors : VA4N1BC110D (Tuner) – Sharp – TC90527 (VIF) – MSD1309B – TAS5707 (Audio amplifier) – TEA1733 (SMPS control) – OZ9967

APPLIANCE RELEASE [Unlock Key]

If the customer forgot the lock code input / indicative classification, enter the "9999" code to unlock.

SOFTWARE VERSION VERIFICATION (Service Menu).

Using the Remote Control press INPUT, then enter "3195".  This option opens the unit Factory menu. (Service Menu)

KEY SERVICE MENU OPERATION

Use the "Enter" key to access the service menu, "Menu" key to return menu 1 Previous and ∇ keys Δ, < and > to select or adjust.

SOFTWARE UPGRADE (via USB).

It should be written the software to be installed in the root (do not put - it into folders or subfolders) to a USB device and renamed "merge.bin".

The update should follow the sequence:

1 . Press the remote's Menu button; two . Select the CONFIG menu;

3. Select the SW UPDATE (USB) option;

4. Press the remote control ENTER key;

5. Select option and press ENTER again;

6. The SW update will start from there.

7. At the end of the update the TV switches off and on channel 2.

Note: During the update the device cannot be de-energized, the risk is this happens, you have your flash memory or even the chip damaged.

After the upgrade should make the "Reset TV", the Setup menu option. And after that turn off and on the TV.

Audio amplifier circuit (Schematic)

HDMI & Audio

LVDS

DL2970 - SMPS

DL3270 SMPS

DL3970 SMPS

Tuner & VIF

Click on the Schematics to zoom in