Daewoo DSC-34W70N Manuel de service télécharger pdf (Page 16)

7. Special Adjustment

(When replacing new circuit boards)

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1. Power assembly

1) After replacing a new assembly, X Radiation 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:

1-1) Operate the HDTV Monitor for at least 20 minutes.

1-2) Perform this test at the normal video and sound.

1-3) Check the cathode voltage of D837. Its voltage should be about 25VDC.

1-4) Connect a resister 24K(1/4W) with parallel to R873.

1-5) Then the set will be shut down, lighting up red to the power indicator.

1-6) If it is not, the circuit of X-Radiation Protection must be repaired before the set is returned to the

customer.

2) The rest adjustment idem are no need to adjust.

2. Main assembly

1) After replacing a new assembly, the rest adjustments are no need.

3. Video assembly

1) No need to adjust.

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Daewoo DSC-34W70N Manuel de service Page 16