akira 14KLS4/CE Service Manual Download Page 3 | Manualshive

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akira 14KLS4/CE Service Manual Download Page 3

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Model No.: 14KLS4CE
Version: 1.0

CONTENTS

SPECIFICATION..................................................................................................................................... 4

IMPORTANT SERVICE SAFETY INFORMATION.............................................................................. 8

ALIGNMENT PROCEDURE.................................................................................................................. 7

SERVICE FLOW CHART ....................................................................................................................... 8

ADJUSTMENT MANUAL ..................................................................................................................... 9

BLOCK DIAGRAM .............................................................................................................................. 13

LA76931................................................................................................................................................. 14

LV1116 ................................................................................................................................................... 17

TDA16846.............................................................................................................................................. 20

LA78040................................................................................................................................................. 23

THE WAVEFORM OF STICKING POINT........................................................................................... 26

CIRCUIT DIAGRAM ............................................................................................................................ 30

PCB BOARD ......................................................................................................................................... 31

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Summary of Contents for 14KLS4/CE

Page 1: ...Colour TV Service Manual...

Page 2: ...2 Model No 14KLS4CE Version 1 0 Model 14KLS4 CE Chassis LA 76931...

Page 3: ...PECIFICATION 4 IMPORTANT SERVICE SAFETY INFORMATION 8 ALIGNMENT PROCEDURE 7 SERVICE FLOW CHART 8 ADJUSTMENT MANUAL 9 BLOCK DIAGRAM 13 LA76931 14 LV1116 17 TDA16846 20 LA78040 23 THE WAVEFORM OF STICKI...

Page 4: ...TV 112 25 464 25MHz Line 625 Line Horizontal Frequency 15625Hz Scanning Vertical 50 60 Hz Video 38MHz Sound 31 5 32 32 5 MHz IF Frequency Chroma 33 57 MHz VHF LOW 43 dB V VHF HIGH 45 dB V UHF 45 dB V...

Page 5: ...d by anyone not familiar with the precautions necessary when working on these types of equipment When it is necessary to make measurements or tests with AC power applied to the receiver chassis an Iso...

Page 6: ...or networks mechanical insulators etc 3 To be sure that not shock hazard exists a check for the presence of leakage current should be made at each exposed metal part having a return path to the chassi...

Page 7: ...identical replacement parts SEE PARTS LIST 6 Before alignment warm up the TV for at least 30 minutes and demagnetize the CRT with an external degaussing coil 7 When removing a PCB or related component...

Page 8: ...input audio signal of audio power amplify circuit check waveform of N103 Pin 5 check waveform of xs808 Pin 16 17 check waveform of N201 Pin 8 10 Horizontal circuit Check voltage of T402 Pin 3 110V che...

Page 9: ...ment and should demagnetize it with degaussing coil 2 Test equipment a DC Power Supply 14V b Oscilloscope c Vacuum Voltage Meter d Multimeter Internal resistance DC 20k V AC 5k V e High Voltage Meter...

Page 10: ...ACK COVER OPTION 0 Q ASM OPTION 0 OPT AV SYSTEM 1 Y IN 0 P48 1 P54 1 OPT YUV 0 LANGUAGE SW CE 1 ENG 0 CH 1 0 OPTION MENU 01 LV1116 OPT 1 AUDIO SW 1 SIF6 5M 1 SIF6 0M 1 SIF5 5M 1 SIF4 5M 1 4 Power Supp...

Page 11: ...160V 2V b Disconnect the oscilloscope enter FACTORY MENU 00 press P or P button to choose V KILL then press V button to display horizontal light line on the screen adjust SCREEN potentiometer so that...

Page 12: ...l No 14KLS4CE Version 1 0 9 OSD position adjustment a Receive PAL five circles pattern signal b Enter into FACTORY MENU 00 and select OSD H POSITION then press V V button to adjust OSD to the proper p...

Page 13: ...BLOCK DIAGRAM 9V 5V 25V 110V POWER SUPPLY TDA16846 MOSFET AV VIDEO INPUT TC4052 AV1AV2 H OUT V OUT LA78040 STV9302 AUDIO OUT TDA7263 CRT SAW FILTER MCU DECODER TUNER AUDIIO MANAGER AV AUDIIO INPUT AV1...

Page 14: ...AM LIMITER PIN 11 RGB VCC 8V DC PIN 12 PIN 13 PIN 14 R G B OUTPUT PIN 15 NC PIN 16 V RAMP OSC CAPACITOR Connect 0 47uF capacitor to GND PIN 17 VERTICAL OUTPUT PIN 18 VCO I REFERENCE Connect 4 7k resis...

Page 15: ...N 45 C INPUT FOR Y C MODE PIN 46 Y INPUT FOR Y C MODE PIN 47 DDS FILTER PIN 48 Y INPUT FOR YcbCr MODE PIN 49 Cb INPUT forYcbCr MODE PIN 50 4 43MHz CRYSTAL PIN 51 Cr INPUT FOR YcbCr MODE PIN 52 SELECTE...

Page 16: ...16 Model No 14KLS4CE Version 1 0 THE BLOCK DIAGRAMS OF LA 76931...

Page 17: ...PIN 7 ST 1 PIN 30 ST 2 Pseudo stereo phase shift capacitor connection pin PIN 8 AviSS LPF Capacitor connection pin for surround low pass filter PIN 9 TREBLE R PIN 28 TREBLE L Capacitor connection pin...

Page 18: ...18 Model No 14KLS4CE Version 1 0 Function Remark PIN 19 I2 C DATA PIN 20 I2 C CLK I2 C control data input PIN 21 VSS PIN 22 L R LPF PIN 29 AviSS HPF PIN 36 ANALOG GND...

Page 19: ...19 Model No 14KLS4CE Version 1 0 THE BLOCK DIAGRAMS OF LV1116...

Page 20: ...capacitor has to be connected between this pin and ground The value of this capacitor determines the duration of the soft start and the speed of the control PIN 5 Op to Coupler Input If an op to coupl...

Page 21: ...S is switched off A second function of this pin is the primary voltage dependent fold back point correction only active in free running mode PIN 12 Ground PIN 13 Output Output signal This pin has to b...

Page 22: ...22 Model No 14KLS4CE Version 1 0 THE BLOCK DIAGRAM OF TDA16846...

Page 23: ...LS4CE Version 1 0 LA78040 TECHNICAL NOTE Function Remark PIN 1 INVERTING INPUT PIN 2 VCC 25VDC PIN 3 PUMP UP OUTPUT PIN 4 GND PIN 5 Ver OUTPUT PIN 6 OUTPUT STAGE PIN 7 NON INV INPUT 9VDC THE BLOCK DIA...

Page 24: ...DA7263 Technical note Function Remark PIN 1 NON INVERTING INPUT 1 PIN 2 INVERTING INPUT 1 PIN 3 SVR MUTING PIN 4 INVERTING INPUT 2 PIN 5 NON INVERTING INPUT 2 PIN 6 GND PIN 7 NC PIN 8 OUTPUT 2 8 PIN 9...

Page 25: ...25 Model No 14KLS4CE Version 1 0...

Page 26: ...26 Model No 14KLS4CE Version 1 0 THE WAVEFORM OF STICKING POINT N103 PIN 60 VIDEO OUTPUT N103 PIN 56 VIDEO INPUT N103 PIN 12 R OUTPUT N103 PIN 13 G OUTPUT...

Page 27: ...27 Model No 14KLS4CE Version 1 0 N103 PIN 14 B OUTPUT CRT R CRT G CRT B N103 PIN 17 VER OUTPUT N103 PIN 21 H OUTPUT...

Page 28: ...28 Model No 14KLS4CE Version 1 0 N440 PIN 5 VER OUTPUT V401 B H INPUT V401 C V402 B V402 C V901 G...

Page 29: ...29 Model No 14KLS4CE Version 1 0 V901 S...

Page 30: ......

Page 31: ...31 Model No 14KLS4CE Version 1 0 PCB BOARD...

Page 32: ...32 Model No 14KLS4CE Version 1 0...

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