Magnavox 19MDTR20 Service Manual

Also see for 19MDTR17: Features

Contents

1-6-2 T0006EA2. Setting for CONTRAST, COLOR,TINT and V-TINT Data ValuesGeneral1. Enter the Service mode. (See page 1-6-1.)2. Press "PICTURE" button on the service remote con-trol unit. Display changes "BRT," "CNT," "COL,""TNT," and "V-TNT" cyclically when "PICTURE" but-ton is pressed.CONTRAST (CNT)1. Press "PICTURE" button on the service remote con-trol unit. Then select "CONTRAST (CNT)" display.2. Press "CH o / p" buttons on the service remotecontrol unit so that the value of "CONTRAST(CNT)" becomes 76.COLOR (COL)1. Press "PICTURE" button on the service remotecontrol unit. Then select "COLOR (COL)" display.2. Press "CH o / p" buttons on the service remotecontrol unit so that the value of "COLOR (COL)"becomes 58.TINT (TNT)1. Press "PICTURE" button on the service remotecontrol unit. Then select "TINT (TNT)" display.2. Press "CH o / p" buttons on the service remotecontrol unit so that the value of "TINT (TNT)" be-comes 57.V-TINT (V-TNT)1. Press "PICTURE" button on the service remotecontrol unit. Then select "V-TINT (V-TNT)" display.2. Press "CH o / p" buttons on the service remotecontrol unit so that the value of "V-TINT (V-TNT)"becomes 56.Note: BRIGHT data value does not need to be adjust-ed at this moment.3-1. C-Trap AdjustmentPurpose: To get minimum leakage of the color signalcarrier.Symptom of Misadjustment: If C-Trap Adjustment isincorrect, stripes will appear on the screen.Note: J302 (B-OUT)--- Main CBA1. Connect oscilloscope to J302.2. Input a color bar signal from RF input.Enter the Service mode. (See page 1-6-1.)3. Press "0" button on the remote control unit andselect C-TRAP mode. (Fig. 3)4. Press "CH o / p" buttons on the remote controlunit so that the carrier leakage B-Out (3.58MHz)value becomes minimum on the oscilloscope.5. Turn the power off and on again.Test point Adj. Point Mode InputJ302(B-OUT)CH o / pbuttons --- Color BarTape M. EQ. Spec.--- OscilloscopePattern Generator ---FigureminimumFig. 2