JVC AV-N29220 Service Manual Download Page 7 | Manualshive

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No.51833

AV-N29220

7

FRONT CABINET

CRT SOCKET PWB

(Within MAIN PWB)

SPEAKER

REAR COVER

Fig.1

A

CONTROL KNOB

MAIN PWB

B

D

PB STOPPER

C

SPEAKER

D

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Summary of Contents for AV-N29220

Page 1: ... N29220 S CONTENTS SPECIFICATIONS 2 SAFETY PRECAUTIONS 3 FEATURES 4 MAIN DIFFERENCE LIST 4 HOW TO IDENTIFY MODELS 4 FUNCTIONS 5 SPECIFIC SERVICE INSTRUCTIONS 6 SERVICE ADJUSTMENTS 10 PARTS LIST 25 OPERATING INSTRUCTIONS STANDARD CIRCUIT DIAGRAM 2 1 SERVICE MANUAL COLOR TELEVISION BASIC CHASSIS FV4 ...

Page 2: ...ermediate Frequency Video IF Carrier Sound IF Carrier Color Sub Carrier 45 75MHz 41 25MHz 4 5MHz 3 58MHz Power Input Power Consumption 120V AC 60Hz 113W Picture Tube High Voltage 29 68cm Measured Diagonally 29kV 1kV at zero beam current Speaker Audio Power Output 5 9cm Oval type 2 1 2W 2 Input Video Input 1Vp p 75Ω RCA pin jack Audio Input R L 500mVrms 4dBs High Impedance RCA pin jack S Video Y 1V...

Page 3: ...lternatives approved by the manufacturer of the complete product 7 Do not check high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k 2W resistor to the anode button 8 When service is required observ...

Page 4: ...ng in real time Closed caption broadcasts can be viewed Audio Video input terminal Built in MTS system Built in HYPER SURROUND system S VIDEO input terminal for taking best advantage of Super VHS Variable Audio output terminal 2 LINE Digital Comb filter Improved picture quality MAIN DIFFERENCE LIST Model name Parts Name AV N29220 R AV N29220 S MAIN PWB SFV 1071A M2 SFV 1074A M2 PICTURE TUBE ITC A6...

Page 5: ... key DISPLAY key SLEEP TIMER key HYPER SURROUND key MUTING key MENU key FRONT CONTROL KEYS 1 2 3 4 5 6 7 8 9 INPUT 2 V L MONO R terminals MENU button CHANNEL Operate button CHANNEL Operate button VOLUME button VOLUME button REMOCON window INDICATOR lamp TIMER POWER POWER button 3 4 5 6 11 10 13 14 7 8 1 2 9 12 15 POWER key INPUT key CHANNEL select key V CHIP key FUNCTION key EXIT key VCR DVD contr...

Page 6: ...OVING THE SPEAKER After removing the MAIN PW board 1 Remove the 2 screws marked as shown in Fig 1 2 Withdraw the speaker backward 3 Follow the same steps when removing the other hand speaker CHECKING THE MAIN PW BOARD 1 To check the back side of the MAIN PW Board 1 Pull out the MAIN PWB Refer to REMOVING THE MAIN PWB 2 Erect the chassis vertically so that you can easily check the back side of the ...

Page 7: ...No 51833 AV N29220 7 FRONT CABINET CRT SOCKET PWB Within MAIN PWB SPEAKER REAR COVER Fig 1 A CONTROL KNOB MAIN PWB B D PB STOPPER C SPEAKER D ...

Page 8: ...splay the Fig 2 SYSTEM CONSTANT screen 4 Refer to the SYSTEM CONSTANT table and check the setting items Where these differ select the setting item with the MENU UP DOWN key and adjust the setting with the MENU LEFT RIGHT keys The letters of the selected item are displayed in yellow 5 After adjusting release the MENU LEFT RIGHT key to store the setting value 6 Press the EXIT key twice to return the...

Page 9: ...PUT TV VIDEO OFF CH 02 See OPERATING INSTRUCTIONS 10 TV DISPLAY SLEEP TIMER VIDEO STATUS HYPER SURROUND OFF 0 STANDARD OFF 2 Setting of MENU TINT COLOR PICTURE BRIGHT DETAIL CENTER CENTER CENTER CENTER CENTER NOISE MUTING SET VIDEO STATUS ON ALL CENTER BASS TREBLE BALANCE MTS TV SPEAKER CENTER CENTER CENTER STEREO ON SET CLOCK ON OFF TIMER LANGUAGE CLOSED CAPTION BACKGROUND Unnecessary to set NO S...

Page 10: ...tment Unless otherwise specified in the adjustment instructions preset the following functions with the remote control unit VIDEO STATUS STANDARD BASS TREBLE BALANCE CENTER HYPER SURROUND OFF TINT COLOR PICTURE BRIGHT DETAIL CENTER ADJUSTMENT EQUIPMENT 1 DC voltmeter or digital voltmeter 2 Oscilloscope 3 Signal generator Pattern generator NTSC 4 Remote control unit 5 TV audio multiplex signal gene...

Page 11: ...ation of SLEEP TIMER 0 MIN is being displayed press DISPLAY key and VIDEO STATUS key on the remote control unit simultaneously to enter the SERVICE MENU screen shown in the next figure page 2 SERVICE MENU screen selection Press the UP DOWN key of the MENU to select any of the following items The letters of the selected items are displayed in yellow PICTURE SOUND GAME LOW LIGHT HIGH LIGHT RF AFC CH...

Page 12: ...IT SELECT BY OPERATE BY EXIT BY IT RF AFC FINE STATUS EXIT SERVICE MENU MAIN MENU SCREEN HIGH LIGHT MODE VCO CW MODE GAME MODE SELECT BY OPERATE BY EXIT BY IT TINT COLOR PICTURE BRIGHT DETAIL EXIT RF AFC CHK MODE DO NOT ADJUST ON LOW LIGHT MODE PICTURE MODE SOUND MODE SELECT BY OPERATE BY EXIT BY IT 1 IN LEVEL EXIT STATUS SERVICE MENU PICTURE SOUND GAME LOW LIGHT HIGH LIGHT RF AFC CHK VCO CW SELEC...

Page 13: ...pletion of the setting adjustment work press the EXIT key again The settings for LOW LIGHT and HIGH LIGHT are described in the WHITE BALANCE page of ADJUSTMENT The setting for VCO CW are described in the IF VCO page of ADJUSTMENT SELECT BY OPERATE BY EXIT BY IT 1 IN LEVEL STATUS EXIT SOUND MODE SELECT BY OPERATE BY EXIT BY IT 1 BRIGHT EXIT STATUS PICTURE MODE INITIAL SETTING VALUE Adjust SETTING V...

Page 14: ...values When the four items No 7 8 11 and 12 are adjusted in the video mode the setting values in each item are revised independently No Setting Adjustment items Variable range initial setting value 1 BRIGHT 0 127 64 2 PICTURE 0 127 77 3 TV DTL TV DETAIL 0 63 26 4 TV BPF TV B P FILTER 0 1 0 5 TINT 0 127 66 6 COLOR 0 127 50 7 EXT BRI EXT BRIGHT 25 2 8 EXT PIC EXT PICTURE 25 0 9 EXT DTL EXT DETAIL 0 ...

Page 15: ...IGHT MODE Setting Adjustment item Variable range initial setting value R CUTOFF G CUTOFF B CUTOFF 0 255 0 255 0 255 20 20 20 HIGH LIGHT MODE Setting Adjustment item Variable range initial setting value G DRIVE B DRIVE 0 255 0 255 128 128 RF AFC CHECK MODE Setting Adjustment item Variable range initial setting value RF AFC FINE ON OFF 77 77 ON DO NOT ADJUST ...

Page 16: ...own on the screen Then adjust CW TRANSF until BELOW REFERENCE mark turns yellow and confirm again SYNC YES being shown on the screen RF AGC adjustment No 19 RF AGC 1 Receive a broadcast 2 Select No 19 RF AGC of the PICTURE MODE 3 Press the MUTING key and turn off color 4 With the MENU LEFT key get noise in the screen picture 0 side of setting value 5 Press the MENU RIGHT key and stop when noise di...

Page 17: ...3 V SIZE with the LEFT RIGHT key of the MENU 4 Adjust No 13 V SIZE until the vertical screen size is 92 H POSITION Adjustment Signal generator No 15 H POS 1 Receive a crosshatch signal 2 Select the No 15 H POS of the PICTURE MODE 3 Set the initial setting value of the No 15 H POS with the LEFT RIGHT key of the MENU 4 Adjust the No 15 H POS until the screen will be horizontally centered Screen size...

Page 18: ...line that is displayed becomes white using the to keys of the remote control unit 9 Turn the screen VR to where the single horizontal line glows faintly 10 Press the key to return to the regular screen The EXIT key is the cancel key for the WHITE BALANCE WHITE BALANCE High Light Adjustment Signal generator G DRIVE B DRIVE 1 Receive a monoscope pattern signal 2 Select the HIGH LIGHT MODE in the SER...

Page 19: ...t of the No 2 PICTURE until you get the optimum contrast Method of adjustment without measuring instrument 1 Receive a broadcast 2 Select No 6 COLOR of the PICTURE MODE 3 Set the initial setting value of the No 6 COLOR with the LEFT RIGHT key of the MENU 4 If the color is not the best with the Initial setting value make fine adjustment of the No 6 COLOR until you get the optimum color SUB COLOR ad...

Page 20: ...een TP R and TP E 5 Adjust TINT and bring the value of B in the illustration to the voltage 9V VW Y ADJUSTMENT OF MTS CIRCUIT Item Measuring instrument Test point Adjustment part Description MTS INPUT LEVEL check No 1 IN LEVEL 1 Select the No 1 IN LEVEL of the SOUND MODE 2 Verify that the No 1 IN LEVEL is set at its initial setting value MTS STEREO VCO adjustment Signal generator Frequency counter...

Page 21: ... and reset the setting value from 1 to 0 MTS FILTER check No 5 FILTER 1 Select the No 5 FILTER of the SOUND MODE 2 Verify that the No 5 FILTER is set at its initial setting value MTS SEPARATION adjustment TV audio multiplex signal generator Oscilloscope L OUT R OUT AUDIO OUT No 6 LOW SEP No 7 HI SEP 1 Input a stereo L signal 300Hz from the TV audio multiplex signal generator to the antenna termina...

Page 22: ...T 1 Turn the POWER SW ON 2 As shown in Fig 1 set the resistor between X connector 1 3 3 Make sure that the screen picture disappears 4 Temporarily unplug the power cord 5 Remove the resistor between X connector 1 3 6 Again plug the power cord make sure that the normal picture is displayed on the screen Fig 1 4 T522 CONNECTOR RESISTOR 18 84kΩ Ω Ω Ω 1 1 4W HEATER R562 D561 R561 X C561 R563 D562 3 2 ...

Page 23: ...ing of shorting of the power supply output from the HVT to the vertical circuit and the small signal power supply is also detected The microcomputer detects at 1 second intervals If NG is detected for more than 1 ms a malfunction is interpreted When a malfunction has been detected the POWER is turned off While the POWER is being turned off the power key of the remote controller is not operational ...

Page 24: ...rs and remove the chip part Transistors diodes variable resistors etc 1 Apply extra solder to each lead 2 As shown in the figure push the part with tweezers and alternately melt the solder at each lead Shift and remove the chip part Note After removing the part remove remaining solder from the pattern 2 How to install Chip parts Resistors capacitors etc 1 Apply solder to the pattern as indicated i...

Page 25: ...29220R MEM 999 N29220S MEM 3 4 Printed in Japan VP 0109 DP3051 VICTOR COMPANY OF JAPAN LIMITED HOME AV NETWORK BUSINESS UNIT 12 3 chome Moriya cho Kanagawa ku Yokohama Kanagawa prefecture 221 8528 Japan ...

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