Sunday, January 01, 2017

Sony XAV-W1 - AV CENTER – Electrical adjustment – Vcom adjustment – Touch panel adjustment – Power amplifier schematic – TDA8588J


ELECTRICAL ADJUSTMENTS
MONITOR SECTION
Execute the V-COM adjustment and flicker adjustment when you replace either the liquid crystal display (LCD2301), DISPLAY board, MAIN board or EEPROM (IC505) on the MAIN board.
Also, the setting value is saved in the EEPROM (IC505) on the MAIN board.
V-COM ADJUSTMENT
Procedure:
1. Connect an oscilloscope to TP2301 (VCOM) and TP2302 (GND) on the LCD board.
2. In the state of source off, press the [4] button on the remote commander.
3. Press the [5] button on the remote commander.
4. Press the [1] button on the remote commander for more than two seconds.
5. The test mode starts, and displayed on the monitor.
6. Press the [SRC] button on the set or the remote commander to select the “AUX1”.
7. Touch the parts other than the touch panel button on the monitor.
8. Adjust the [UP]/[DOWN] button on the monitor so that the waveform level of oscilloscope becomes 5.8 ± 0.1 V .
9. Touch the [NEXT] button on the monitor five times.
10. Touch the [SET] button on the monitor to save the setting value.
11. Press the [OFF] button on the set or the remote commander to release the test mode.
FLICKER ADJUSTMENT
Procedure:
1. Input the NTSC white 30% raster signal from AUX3 VIDEO IN jack on the MOTOR board.
2. In the state of source off, press the [4] button on the remote commander.
3. Press the [5] button on the remote commander.
4. Press the [1] button on the remote commander for more than two seconds.
5. The test mode starts, and the screen is displayed on the monitor
6. Press the [SRC] button on the set or the remote commander to select the “AUX3”.
7. Touch the parts other than the touch panel button on the monitor.
8. Touch the [NEXT] button on the monitor to display.
9. Adjust the [UP]/[DOWN] button on the monitor so that the flicker becomes minimum in the sight.
10. Touch the [NEXT] button on the monitor four times.
11. Touch the [SET] button on the monitor to save the setting value
12. Press the [OFF] button on the set or the remote commander to release the test mode.
TOUCH PANEL ADJUSTMENT
There are three kinds of adjustment values for the touch panel.
Default value : Value input from the beginning (Indefeasible value).
Factory adjustment value: Value adjusted by touch panel adjustment before having shipped at factory.
User adjustment value : Value that user adjusted by the Touch Panel Adjust.
When You Have Replaced the Touch Panel or Adjustment Value of the Touch Panel Shifts
Procedure:
1. In the state of source off, press the [4] button on the remote commander.
2. Press the [5] button on the remote commander.
3. Press the [1] button on the remote commander for more than two seconds.
4. The test mode starts.
5. Press the [CSTM] button on the set for more than two seconds.
6. Press the [CSTM] button on the set for more than two seconds to annul the factory adjustment value and the user adjustment value and the test mode start.
7. Press the [CSTM] button on the set for more than two seconds to display the touch panel adjustment screen.
8. Touch the center of cross on the monitor six times according to the screen (The factory adjustment value is set).
9. Press the [OFF] button on the set or the remote commander to release the test mode.
10. Confirm the touch panel operation by operating usually.
POWER AMPLIFIER  CIRCUIT DIAGRAM 
USING IC TDA 8588J
CLICK ON THE IMAGE TO ZOOM IN