Thursday 20 February 2020

L37TA6A Haier LCD TV – PCB connection details, schematic and interface details


This chassis is used to match and connect the big screen LCD TV, it supports multi-system TV input signal.  it can stored 128 TV programs at most, at the same time the highest resolution of this chassis can be up to SXGA or appear R, G, B input signal of WXGA of 16:9 again, color appear again can support 24 bit, and it
can realize synchronous automatic check. It can support 1080P HD signal input at most, and includes two rows CVBS signal, one row S terminal signal input, one row HDMI signal one row CVBS signal output.
Inbuilt 2x10W medium sound + 2x3W treble sound output, four rows two channels external audio signal input, one row sound output. Support left and right sound balance, equalizer adjustment function.
Meanwhile, this chassis can support TV signal and digital display in HD signal at the same time, and there are 3A picture optimize, 3A demo.
This chassis use new HYF-35R remote controller (grey, 41 button, can not share with the original blue 35 button HYF-35R ), the method to enter the factory mode is: Screen-----P.STD------S.STD------Sleep Time.
The following is the instructions of the factory menu of V2.1 version program.
The sound box part and the structure of complete set is separable, so it need install solely.

1. Power interface: supply the working power to chassis from power board..
2. Background light control panel interface: control the switch and brightness of screen background light.
3. Remote control interface: support Toshiba receiving negotiation.
4. Control panel interface: 7 button control.
5. Sound output interface: sound signal output.
6. Program upgrading interface: upgrading program. Only for factory use.
Interface definition
DVB-T module
This chassis is DVB-T digital module, it can receive European digital broadcasting TV.
Interface definition
1.Power interface 1 Supply the working power to chassis from power board.
2. Power interface 2
Supply the working power to electric tuner from power board.
3. Sound output interface: Output the sound signal to the interface of speaker.
4. Signal interface
Output the image signal to the interface of image source..
5. Control panel interface
Connect control panel, press 7 button to control.
6. Speaker interface
Output the sound signal to the interface of speaker.
7. Serial port interface
For updating the process. Only use for factory.
PCB dimension specification
(1)PCB thick + the height of the tiptop component=20 mm
(2)PCB = 140mm*140mm
Screw hole specification: diameter 3.5 mm ,the hole position structure diagram.
Schematic

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