Haier HL40XP1 Service Manual

To get the best picture quality, adjust the VGA graphics card to 1024x768. Use the TV’s VGA or DVI (Digital Visual Interface) Audio IN port for audio connections, depending on your computer connector. If the graphic card on the computer does not output analog and digital RGB simultaneously, connect only one of either VGA IN or HDMI IN to display the VGA on the TV.

If there is noise associated with the resolution, vertical pattern, contrast, or brightness in VGA mode, change the VGA mode to another resolution, change the refresh rate to another rate, or adjust the brightness and contrast on the menu until the picture is clear. If the refresh rate of the VGA graphic card cannot be changed, consider changing the VGA graphic card or consulting the manufacturer of the VGA graphic card.

To change the input source, press the INPUT button on the front panel or the remote control. Press it repeatedly to cycle through the available sources until you reach the one you want to watch. In the MENU screen, the INPUT button serves as the ENTER button.

To adjust the volume, use the VOL+ and VOL- buttons on the front panel or the remote control. In the MENU screen, these buttons serve as left/right buttons.

The TAS5708 component is an audio amplifier (AUDIO AMP) that drives the speaker in the Haier HL40XP1.

The components responsible for providing the 5V power supply in the Haier HL40XP1 are U22 (AP1534), U25 (AP1117E33), and U28 (AZ1084-ADJ).

The HDMI_CEC (Consumer Electronics Control) pins are used for controlling multiple HDMI devices with a single remote control. They facilitate communication between HDMI devices to enable features like one-touch play and system standby.

The HDMI1 I/F and HDMI2 I/F interfaces are connected to various components including GPIO pins, HDMI data lines (D0P, D0N, D1P, D1N, D2P, D2N), clock lines (CLKP, CLKN), and power sense lines (5VSENSE). These interfaces handle the data transmission and control signals for HDMI connections.

The Haier HL40XP1 has several video input options including AV1, AV2, AV_R_IN, AV_L_IN, AV_R_IN2, AV_L_IN2, CVBS_IN, CVBS_IN2, S-Video, S_Y_IN, and S_C_IN.

To enter the Service Mode on your Haier HL40XP1, follow these steps: 1. Press the Menu button, 2. Input the code 8893, 3. Press OK. The system will then enter the factory mode menu.