Special Adjustment (When Replacing New Circuit Boards) - Daewoo DSC-30W60N Service Manual

7. Special Adjustment (When replacing new circuit boards)

1. DTV Decoder module
1) Before replacing a new module, if seeing OSD menu is possible, record the adjusted data value of White Balance and
Geometry.
2) After replacing the defective module with a new one, memorize the value of data value to the new DTV decoder module
with the service remote control.
3) Perform the Y Level Adjustment.
2. Power assembly
1) After replacing a new assembly, perform the High Voltage Adjustment at the normal video and audio.
2) X-Rediation Protection Circuit Test
When service has been performed on the horizontal deflection system, high voltage system or B+ system, the X-Radiation
Protection Circuit Test must be tested for proper operation as follows:
2-1) Operate the HDTV set for at least 15 minutes.
2-2) Perform this test at the normal video and sound.
2-3) Check the cathode voltage of D837. Its voltage should be about 26VDC.
2-4) Connect a resister 24KΩ(1/4W) with parallel to R925.
2-5) Then the set will be shut down, lighting up red to the power indicator.
2-6) If it is not, the circuit of X-Radiation Progtection must be repaired before the set is returned to the customer.
3) The rest adjustment idems art no need to adjust.
3. Main assembly
1) After replacing a new assembly, perform the Blanking Width adjustment.
2) The rest adjustments are no need to adjust.
4. Video assembly
1) No need to adjust.
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