Haier HLTDC15 Service Manual

The remote controller functions are described starting on page 10 of the manual. Please refer to that section for detailed information on how to use the remote controller.

To connect your PC to the Haier HLTDC15 TV, you can use the VGA IN port for video and the PC AUDIO IN port for audio. Connect the VGA cable from your PC's display card to the VGA IN port on the TV, and connect the audio cable from your PC's audio output to the PC AUDIO IN port on the TV.

To connect an external device to the Haier HLTDC15 TV for both audio and video, you can use the VIDEO IN and AUDIO IN ports. Connect the video output from your external device to the VIDEO IN port on the TV, and connect the audio output to the AUDIO IN port. Alternatively, you can use the S-VIDEO and COMPONENT IN ports for better video quality, depending on the capabilities of your external device.

It is advisable to disconnect the AC power cord from the AC outlet when the product is not used for an extended period of time.

Avoid exposing the main unit to direct sunlight and other sources of heat. Do not stand the television receiver directly on other products which give off heat, such as video cassette players or audio amplifiers. Additionally, do not block the ventilation holes in the back cover, as ventilation is essential to prevent failure of electrical components. Do not squash the power supply cord under the main unit.

To open or close the DVD tray, use the 'DVD Open/Close' button on the remote control.

The UOC3 IC is a TV signal processor that includes Teletext and Nicam functionality. It processes TV signals and handles related features.

The 'AV3-8.4-16(黄、白、红)' connector is part of the audio and video output system. It is connected to various components such as resistors (R69, R71) and capacitors (C118, C121), indicating it is used for transmitting audio and video signals to external devices.

If the screen is black and not turning on, first check the 5V power supply for BLON on CN10. If the power supply is not the issue, check the 12V inverter input. If the inverter input is fine, check the power supply, reset, and crystal of the MCU (Microcontroller Unit). Additionally, inspect the circuit for Q4/MMBT3904 and the inverter or self-proofed components.

To troubleshoot a black screen issue, follow these steps: 1. Check the 5V power supply for BLON on CN10. 2. Verify if the 12V inverter input is functioning. 3. Inspect the power supply, reset, and crystal of the MCU. 4. Check the circuit for Q4/MMBT3904. 5. Examine the inverter or self-proofed components. If any of these components are faulty, they may need to be replaced or repaired.