Sanyo LCD-22XR8DA, Service Manual

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3
Alignment instructions
1. Test equipment
VG-848 (YPbPr,VGA signal generator)
VG-849 (HDMI signal generator)
CA210 (white balancer)
2. Power test
Connect power board, digital processing board, IR board and backlight board according the wiring
diagram, connect the power and press to turn on the TV.
Test the pin voltage of X401, the data is shown in table1:
Table1 voltage data of X401
X401 Pin1 2 3 4 5, 6 7, 8 9 10 11 12 13
Voltage 5V±5% 0 5V±5% 0 12V±5% 0 ≤ 3.3V ≤ 5V ≤ 3.3V 32V±5% 0
3. Alignment flow-chart
The alignment flow-chart is shown as fig-1
Check if EDIT, HDCP KEY, FLASH are written
White balance adjustment
Connect to the center signal source and check each
function of TV (station leaking, analog control, etc.)
check the output of earphone and speaker.
Input AV signal and check the function
Combined test for general assembly
Check the other functions (LCN, OTA)
Input Component signal and check the function of YPbPr
Input D-SUB signal and check if the display is normal, check
the function (analog control), horizontal/vertical center, etc.
Input HDMI signal and check if the display is normal, check
the function (analog control), horizontal/vertical center, etc.