2 Service Hints2.1. Service Position for E-Board1. Remove the back cover.2. Stand the TV set as shown in fig. 73. Remove the A-Board from the TV set by pulling the main board out as shown in figure 7.Fig. 72.2. Factory mode adjustmentHow to set: To set the Factory mode, press Volume 0 dac on the TV and TImer Setting 30 Min onthe remote control and press Volume (-) Down button on the TV together press recall onthe remote control.To Set Self-Check: Press the volume down button on TV then press the off timer button on remote control.2.3. Adjustment for White BalancePreparation:1. Receive the white balance pattern and aging should have been performed over 30 minutes.2. Set the picture menu to DYNAMIC NORMAL.3. Degause the CRT face.4. Fix the CRT colour analyzer receiver unit to CRT face.Adjustment of Low Light.1. Adjustment Sub Bright, so that Y = 6.3 ± 1.0 unit2. Adjustment R-CUT OFF, so that Y = 0.235 ± 0.01 unit3. Adjustment G-CUT OFF, so that Y = 0.235 ± 0.01 unitAdjustment of High Light1. Adjustment Sub Bright, so that Y = 390 unit2. Adjustment R-Drive, so that Y = 0.259 ± 0.01 unit3. Adjustment B-Drive, so that Y = 0.259 ± 0.01 unit2.4. Adjustment for CRT CUT OFFPreparation:1. Connect the oscilloscope probe to TPL7.2. Screen VR min.4TC-15PM10R