Acer AT2645 Service Manual

If your Acer AT2645 has localized features not covered in the service guide, such as add-on cards, modems, or extra memory, you should contact your regional Acer office or the responsible personnel/channel for further technical details.

To change the audio type, press the 'MPX' button on the remote control. The audio type will be displayed in the top right-hand corner of the screen.

If you encounter an abnormal display, you should first reset the source. If the issue persists, check the signal filter circuit and replace the filter or resistance if necessary. Additionally, check the RF signal input, TV system setup, LVDS cable, and the panel. If the panel is faulty, you may need to replace it.

If there is no sound, start by checking the source and resetting it. Ensure that the mute function is not enabled. Check the input signal and the TV system setup. If the issue persists, check the TU701 and U401 components. If they are faulty, you may need to change them. Additionally, check the speaker and the TV system. If the speaker is faulty, you may need to change it.

To find the correct part number for an FRU for the Acer AT2645, you should refer to the most up-to-date information available on your regional web or channel at http://aicsl.acer.com.tw/spl/. If you are an Acer Authorized Service Provider, use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines.

The HDMI1_SCL and HDMI1_SDA lines are connected to various components including resistors (R515, R524, R525), inductors (L504, L505, L506, L507, L508, L509), and other components like U506, U507, and Q506.

The PS_ON_SW is a switch that controls the power state of the device. It is connected to the CEC uP and is used to turn the power on or off.

The 3V3SB_EN is an enable signal for the 3.3V standby power supply. It is connected to various components and resistors, such as R940 and R7903, which are 10K OHM 1/10W resistors, and is used to control the standby power state of the device.