The machine for M18M machine heart., according to the user reflect the machine many characters often appear on the screen, it was later check is caused by the machine automatically entered into a state of repair.
 
Open back cover observation, found that the circuit board is full of dust as a toner, especially near the ignition coil and the CPU. The dust in the condition of wet weather, may be triggered conductive related circuit and in maintenance state. The user press the number keys, or the volume switch, inadvertently changed the original data, so the above problems.
 
Vacuum and brush on the machine after thorough cleaning, check grating control circuit integration block IC701 (TA8859AP) and peripheral components, such as Q701 normal, confirm the fault caused by disorder for the data.
 
 
Volume adjustment of the television set to 0, then click the "regular shutdown" key on the remote control, and then press the "RECALL" key on the remote control at the same time and "volume down" key on the TV, to enter the television maintenance state, to set up and adjust circuit. In the maintenance state has four CHK1 ~ CHK4 adjustment mode, respectively to adjust different circuit with Settings. The state of maintenance after use the number keys on the remote control to "1" or "2" in the CHK1 ~ CHK4 choose among children.
 
The machine fault just choose CHK4 pincushion distortion (grating) for data adjustment. Press the number keys to "3", "4" may choose to adjust the project, according to the volume increase or decrease may change the value.
 
Adjust to note down the original machine before numerical for recovery. The native original data and the adjusted data in the following table, adjusted for troubleshooting.