Haier 40DR3505 LED TV-MSD3393LU Chassis – how to enter the service mode, how to disassemble, amplifier schematic

 

How to disassemble the TV

Remove the Stand

Remove the Back Cabinet

Remove the power-main board.

Remove the Speaker

How to remove the stand

1. Lay down the TV set .
2. Remove the four screws from the stand which in the picture.
3. Remove the stand.

Remove the Remote Control Board And the Key Board

How to remove the back cabinet.

1. Remove the fifteen screws indicated with red circles.
2. Flip machine, panel side up.
3.Carefully raise the Front shell from bottom.

How to remove the power-main board.

1. Remove the six screws indicated with red circles.
2. Then remove the side metal board and down metal board.
3. Remove the four screws indicated with red circles.
4. Remove the power-main board.

How to remove the speaker

Remove the speaker directly

How to remove the remote control board and the key board

Connectors definition

LVDS Interface connector

Amplifier schematic

How to enter into Service Mode
The way to the factory mode menu:
Step 1: Press Menu,
Step 2: Press “8893”,
System will be into the factory mode menu when 2 steps above are done.
At the end of the main factory menu, you can see the edition of the software, like this" BUILD TIME 2014-01-21 23:17:21 VERSION v1.0 ”.

How to exit
If you want to exit this factory menu, please press the button ”Exit” on the remote.
System will be out the factory mode menu.

In factory mode menu, press up/down button to choose the up/down item, press right or OK button to the submenu. Press MENU button to go back.

GENERAL SETTING
1)Init Flash;
2)Uart Enable: Choose on or off in Uart Enable;
3)Dbg Message Enable: Choose on or off in Dbg Message Enable;
4)Test Pattern: Choose the Pattern picture;
5)Dynamic Contrast: Choose on or off in Dynamic Contrast;
6)Power On Mode: Choose on or off in Power On Mode;
7)Mirror Control: Choose on or off in Mirror Control;
8)Front End Status
9)Timer Test
10)SSC
11)Erase Flash
12)PQ Advance Debug: Choose on or off in PQ Advance Debug;
13)Factory remote: Open or close the
Factory remote;

Panel Setting
1)LVDS Bit Mode: choose the Bit;
2)LVDS MAP: choose the MAP;
3)LVDS ODD/Even: choose ODD or Even;
4)Bcaklight:Adiust the value of backlight;
5)Reset Panel Setting Date
6)6MX0 LVDS Map: choose the 6MX0 LVDS MAP;
7) 6MX0 Channel: choose the 6MX0 Channel;
8)6MX0 Mirror: choose the 6MX0 Mirror;
9)6MX0 Demo: choose the 6MX0 Demo;
10)6MX0 Update.

Main board

1. Mainchip—MSD3393LU(U1)
2. Audio Amplifier—TPA3110D2PWPR (UA1)
3.Main Flash Memory—GD25Q32BSIG (UF1)
4.DC/DC convertor 5V-1.8V for MSD3393LU (U1)—LC1117CLTRAD (UL2)
5.voltage convertor 5V to 3.3V_STB —LC1117CLTR33 (UL1)
6.voltage convertor 5V to 1.15V_STB —LC3406CB5TR (UD1)
7.voltage convertor 5V to 3V for tuner—LC1117CLTR33 (UT1)
8.Tuner —SDCL1005CR33JTDF (RFT1)