Sharp 25RM100N color TV - Service mode entry_Power supply and Horizontal Output Circuit Diagram. How to initialize the settings
.jpg)
* Before putting unit into the service mode, check that customer adjustments are in the normal mode. Use the reset function in the video adjustment menu to ensure customer controls are in their proper (reset) position.
* Once in the service mode, press the Ch-up / Ch down button on the remote controller or at the set. The service adjustment number will vary in increments of one, from "S01" to "OP2.
* Press the Vol-up / down button to adjust the data number.
To enter the service mode and exit service mode.
# While pressing the Vol-up and Ch-up buttons at the same time, plug the AC cord into a wall socket. Now the TV set is switched on and enters the service
mode.
# To exit the service mode, turn the television off by pressing the power button.
RF AGC Adjustment
1. Receive a good local channel.
2. Enter the service mode and select the service adjustment "S08".
3. Set the data value to point where no noise or beat appears.
4. Select another channel to confirm that no noise or beat appears.
Note 1 : You will have to come out of the service mode to select another channel.
Note 2: Setting the data to "00" will produce a black raster.How to initialize the TV
Holding down both the Vol-up/CH-down buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2101.
SMPS (Power Supply Regulator) & H-OUT SCHEMATIC _ CLICK ON THE PICTURES TO MAGNIFY
