Haier LY19Z6 Service Manual

Also see for LY19Z6:

18.5″&23.6″ LED TV Haier LY19Z6&LYF24Z61ServiceServiceServiceTABLE OF CONTENTSDescription Page Description PageSAFETY NOTICEANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSISAND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICINGELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING6.1 Main Board………..…………………...…….….......246.2 Power Board…..…………..………….…..…….......286.3 Key Board………………………..……..……….......306.4 IR Board…………………………..……….…….......317. Adjustment/FW Upgrade/EDID……………...………328. Block Diagram..….…...............................................439. Wiring Diagram.……...............................................4410. Schematic Diagram……….……..………………....4710.1 Main Board…………….…………………...….......4710.2 Power Board………..…....…………...………......6110.3 Key Board……………….………….………….......6310.4 IR Board……………………………….……….......65Table of Contents..........……...........................................1Important Safety Notice............................................…...2Revision List………………………………………..…….…31. General Specification...................................……........42. Operating Instructions…………………….……..…......52.1 The Use of Remote Control…..….…………...……....52.2 To Use the Menus…...…..……………….….…..….....52.3 Front Panel Control Knobs…...…………….…..….....52.4 How to Connect……...…………………….…….….....53. Input/Output Specification…...………..........................64. Mechanical Instructions…..…………………................95. Repair Flow Chart..……………………………….……176. PCB Layout.........………...…………………….……...24

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Frequently asked questions

To use the remote control, refer to section 2.1 of the manual titled 'The Use of Remote Control' on page 5.

To connect the Haier LY19Z6 LED TV, follow the instructions provided in section 2.4 titled 'How to Connect' on page 5.

The maximum power consumption of the Haier LY19Z6 during operation is less than 40 W.

If the LED indicator is off, first ensure that the AC input is connected and the power is turned on. If the power is on, check if the power board is outputting 5V. If the power board is not outputting 5V, replace the power board. If the power board is functioning correctly, check the IR board and LED. If the issue persists, you might need to replace the main board.

First, check if the TV is under control and power on/off by remote control and power key. If it is, check if the backlight is 'On'. If the backlight is on, check the LVDS cable and ensure the B/L signal is available. If the LVDS cable is faulty, reinsert or replace it. If the Panel Vcc is 5V and the power board output is 43V, you may need to replace the main board or the panel.

If the backlight is on but the screen is not displaying anything, check the LVDS cable and ensure the B/L signal is available. If the LVDS cable is faulty, reinsert or replace it. If the Panel Vcc is 5V and the power board output is 43V, you may need to replace the main board or the panel.

First, check if the keyboard is connected properly and reconnect it if necessary. If the keyboard is connected properly, check if the buttons are functioning correctly. If the buttons are OK, enter the factory mode to do a 'Reset'. If the keyboard is not OK, replace the main board.

If the keyboard is connected properly, check if the buttons are functioning correctly. If the buttons are OK, enter the factory mode to do a 'Reset'. If the keyboard is not OK, replace the main board.

The LED_G pin is used to control the green LED. It is enabled when set to low and disabled (standby) when set to high.

The system EEPROM write protection can be controlled using the SYS_EEPROM_WP pin. Setting it to low enables write protection, while setting it to high allows writing to the EEPROM.

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