How to enter service mode to Duraband DBTV1901_Schematic Diagram_Memory IC replacemant & adjustments. [Universal Remote Control Set-up Codes]
Semi-conductors (ICs) used _ AN5522_2SD2627LS-CBC11(Hor: Output)_M61250FP(Chroma)_OEC7073A(Micon)_S-24C02BDP-1A(Memory)
To enter the Service Mode, press both set key and remote control key for more than 1 second
CONFIRMATION OF HOURS USED
* POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
* Set the VOLUME to minimum.
* Press both VOL. DOWN button on the set and Channel button (6)on the remote control for more than 1 second.
* After the confirmation of using hours, turn off the power.
REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings.
1. Enter DATA SET mode by setting VOLUME to minimum.
2. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second. ADDRESS and DATA should appear.
3. ADDRESS is now selected and should "blink". Using the SET + or - keys on the remote, step through the ADDRESS until required ADDRESS to be changed is reached.
4. Press ENTER to select DATA. When DATA is selected, it will "blink".
5. Again, step through the DATA using SET + or - until required DATA value has been selected.
6. Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7. Repeat steps 3 to 6 until all data has been checked.
8. When satisfied correct DATA has been entered, turn Power Off (return to Standby Mode) to finish the DATA input. The unit will now have the correct DATA for the new memory IC.
On-Screen Display Adjustment
> In the condition of NO indication on the screen.
* Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more than 1 second to appear.
* Use the Channel UP/DOWN button or Channel button (0-9)on the remote control to select the options.
* Press the MENU button on the remote control to end the adjustments.
SCHEMATIC (Circuit Diagram)
SYSTEM CONTROL & MEMORY
Horizontal & Vertical Scan Output
CHROMA
SMPS
CLICK ON THE SCHEMATICS TO ZOOM IN
Universal remote control set-up codes: 0101 0135 0767