Diagrama Electronico Tv Rca Modelo: Mr-14V75 Chasis M123A

Colour Television

Chassis: M123A

Service Service

Contents
1. Technical Specifications, Connections and Chassis Overview 2. Safety & Maintenance Instructions, Warnings and Notes 3. Directions for Use 4. Mechanical Instructions 5. Faultfinding 6. Block Diagram, I2C Overview Block Diagram 2 IC 7. Electrical Diagrams and Test Point with waveform diagram Power Supply (Diagram A1) LineDeflection (Diagram A2) Frame Deflection (Diagram A3) Tuner IF (Diagram A4) MCU,Video IF and Sound IF (Diagram A5) BTSC (Stereo/SAP) Decoder(Diagram A6) Video Source Switching (Diagram A7) Side AV (Diagram A8) Audio Amplifier (Diagram A9) CRT Panel (Diagram B) Transistor Test Voltage Test point with Waveform Diagram 8. PCB diagram Main PCB CRT PCB MPX PCB SIDE AV PCB 9. Alignment Procedures 10. CircuitDescription 11. List of Abbreviations 12. Spare Parts List

Page
2 -3 4 -5 6 - 32 33 34 -40 41 42-43 44 44 45 45 46 47 47 48 48 49 49 50 - 51 52 53 54 55 56 - 64 65 66 - 68 69 - 89

© Copyright 2001 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.All rights reserved. No part of this publication may be reproduced, stored in aretrieval system or transmitted, in any form or by anymeans, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
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Colour Television

Chassis: M123A

1. Technical Specifications, Connections and Chassis Overview
Index: Sound systems : FM-mono: FM-stereo 1. Technical Specifications. A/V connections : NTSC 3.58 2. Connections. Channel selections :TV:2-69,CATV:2-13,A-W, 3. Chassis Overview.W+1~W+84,A-5~A-1,5A Note: Aerial input : 75OHM, 1VP-P Below described specifications are not valid for one product, but for the whole product 1.1.2 Miscellaneous range. See Product Survey for specific models. Audio output : =3W+3W Figures can deviate slightly from the actual Mains voltage : AC120V situation, due to different set executions. Mains frequency : 60 Hz Ambient temperature : + 5 to + 45 deg. C 1.1Technical Specifications Maximum humidity : 90 % 1.1.1 Reception Power consumption : 80W Tuning system : PLL Standby Power consumption : 70dB) from the antenna input. Enter D-mode, select menu6 to adjust RFAGC item until the monitor peak value to 0.8Vp-p.

4. Screen & Focus voltage adjustment
--- Apply pattern signal in normal status, enter D-mode, press TV/AV button to turn off the verticaloutput. --- Adjust the SCREEN switch on the flyback transformer to make a horizontal shining line just visible on the screen. ---Turn on the vertical output, adjust the FOCUS on the flyback transformer to obtain the optimum focus.

5. White balance adjustment
1)Apply the black and white pattern in normal status; 2)Alignment of normal colour temperature ---- Change Colour Temperature to normalstatus ---- Use a colour analyzer to measure the black side of the screen. By changing the value of RC, GC and BC, set the reading of the colour analyzer to X=284, Y=299. ---- Use a colour analyzer to measure the white side of the screen. By changing the value of GD, BD, set the reading of the colour analyzer to X=284, Y=299 ---- Separately set the brightness and contrast from min. to max., repeat thestep 2 and 3 until The reading of the colour analyzer is correct.

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Colour Television
9. Alignment Procedures

Chassis: M123A

3)Alignment of warm colour temperature Change Color Temperature to warm status Use a colour analyzer to measure the black side of the screen. By changing the value of RC-W, GC-W and BC-W, set the reading of the colour analyzer to X=296, Y=294. Use a colouranalyzer to measure the white side of the screen. By changing the value of GD-W, BD-W set the reading of the colour analyzer to X=296, Y=294. Separately set the brightness and contrast from min. to max., repeat the step 2 and 3 until the reading of the colour analyzer is correct. 4)Alignment of cold colour temperature Change Color Temperature to cold status Use a colour analyzer to measure the...