JVC AV-14F3PX Service Manual Download Page 1

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AV-14F3PX

No. 56083

CONTENTS

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SPECIFICATIONS ........................................................................................................................... 2

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SAFETY PRECAUTIONS ................................................................................................................ 3

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FEATURES ...................................................................................................................................... 4

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OPERATING INSTRUCTIONS (APPENDED) .............................................................................. 1-1

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SPECIFIC SERVICE INSTRUCTIONS ............................................................................................ 4

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SERVICE ADJUSTMENTS ............................................................................................................ 10

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STANDARD CIRCUIT DIAGRAM (APPENDED) ......................................................................... 2-1

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PARTS LIST ................................................................................................................................... 27

BASIC CHASSIS

GA2

AV-14F3PX



2000 VICTOR COMPANY OF JAPAN, LTD.

No. 56083

Sep. 2000

SERVICE MANUAL

COLOR TELEVISION

AV-14F3PX

(PH)

−

Summary of Contents for AV-14F3PX

Page 1: ...4 OPERATING INSTRUCTIONS APPENDED 1 1 SPECIFIC SERVICE INSTRUCTIONS 4 SERVICE ADJUSTMENTS 10 STANDARD CIRCUIT DIAGRAM APPENDED 2 1 PARTS LIST 27 BASIC CHASSIS GA2 AV 14F3PX COPYRIGHT 2000 VICTOR COMPANY OF JAPAN LTD No 56083 Sep 2000 SERVICE MANUAL COLOR TELEVISION AV 14F3PX PH ...

Page 2: ...ermediate Frequency VIF Carrier 45 75MHz SIF Carrier 41 25MHz 4 5MHz Color Sub Carrier Frequency NTSC 3 579545MHz PAL M 3 57561149MHz PAL N 3 58205625MHz Aerial Input Terminal 75Ω Unbalanced Power Input Rating AC110 240V 50 60Hz Operating AC90 260V 50 60Hz Power Consumption 44W Picture Tube Visible size 34cm measured diagonally High Voltage 22 5kV 1kV at zero beam current Speaker 5cm 9 cm Oval typ...

Page 3: ...tical to those used in the original circuits Service should be performed by qualified personnel only 2 Alterations of the design or circuitry of the products should not be made Any design alterations or additions will void the manufacturer s warranty and will further relieve the manufac turer of responsibility for personal injury or property damage resulting therefrom 3 Many electrical and mechani...

Page 4: ... you can easily check its back side CAUTION When erecting the Main PW Board be careful so that there will be no contacting with other PW Board Before turning on power make sure that all connectors are prop erly connected WIRE CLAMPING AND CABLE TYING 1 Be sure to clamp the wire 2 Never remove the cable tie used for tying the wires together Should it be inadvertently removed be sure to tie the wire...

Page 5: ...AV 14F3PX No 56083 5 CRT SOCKET PWB Within MAIN PWB MAIN PWB SPEAKER REAR COVER A B D D SPEAKER FRONT CABINET C 5 2 2 2 ...

Page 6: ...re the same as those indicated in Table 1 If the value is different select the setting item with the MENU 1 4 key and set the correct value with the MENU 2 3 key The selected value will be stored in memory when the MENU 2 3 key is released 4 Press the EXIT key twice to return to the normal screen NAME OF REMOTE CONTROL KEYS Fig 1 SERVICE MENU SELECT BY OPERATE BY EXIT BY IT PICTURE SOUND VIDEO STA...

Page 7: ...value VIDEO 2 AUDIO MTS VARI OUT NO GAME YES CINEMA YES CCD YES RETURN YES SURROUND YES SETTING OF SYSTEM CONSTANT SET Table 1 1 2 MONO PH MONO MTS YES NO YES NO YES NO YES NO YES NO YES NO Setting of Menu Table 2 2 Setting item Setting value Setting item Setting value TINT CENTER ON OFF TIMER NO COLOR CENTER CHANNEL SUMMARY Unnecessary to set PICTURE CENTER SET LOCK CODE Unnecessary to set BRIGHT...

Page 8: ...N 5 COL NTSC 6 TINT 7 TV DTL 8 EXT PIC 9 EXT BRI 10 EXT COL 11 EXT TINT 12 EXT DTL 13 P N KILL 14 Y S CONT 15 TV Y DL 16 EXT Y DL 17 WPL SW 18 Y GAMMA 19 P N G P 20 COL L SW 21 COL LMT 22 PN C ATT 23 OFST SW 24 OFST B Y 25 OFST R Y 26 C TOF SW 27 TV T FO 28 TV T Q 29 EXT T FO 30 EXT T Q 31 C TRAP 32 C TR FO 33 C TRAP Q 34 FIX B W 35 APA P FO 36 DC TRAN 37 B ST SW 38 B ST PO 39 ABL GAIN 40 ABL PO 4...

Page 9: ...nsistors diodes variable resistors etc 1 Apply extra solder to each lead 2 As shown in the figure while pushing the chip part with twee zers alternately melt the solder at its each lead Then shift and remove the chip part Note After removing the part remove remaining solder from the pattern REPLACEMENT OF CHIP COMPONENT 2 How to install Chip parts Resistors capacitors etc 1 Apply solder to the pat...

Page 10: ...d in the adjustment items preset the following functions with the remote control unit BASIC OPERATION IN SERVICE MENU 1 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the remote control unit 2 SERVICE MENU ITEMS With the SERVICE MENU various settings adjustments can be made and they are broadly classified in the following items of settings PICTURE For entering adjusting the setting v...

Page 11: ... 1 4 key Press to select an item in the Sub Menu 2 3 key Press to select the value of the selected item EXIT key Press to return to the previous screen VIDEO STATUS key In the VIDEO STATUS sub menu screen press to switch between VIDEO STA TUS GAME and VIDEO STATUS CINEMA 2 LOW LIGHT HIGH LIGHT Setting will be done by using the numeral key on the re mote control unit 3 RF AFC CHK Do not adjust 4 VC...

Page 12: ...CT BY OPERATE BY EXIT BY IT TINT G DRIVE COLOR B DRIVE PICTURE R CUT BRIGHT G CUT DETAIL B CUT EXIT GAME SELECT BY OPERATE BY EXIT BY IT TINT G DRIVE COLOR B DRIVE PICTURE R CUT BRIGHT G CUT DETAIL B CUT EXIT BRIGHT BRIGHT EXIT BY IT EXIT SELECT BY OPERATE BY EXIT BY IT 1 PICTURE EXIT SELECT BY OPERATE BY EXIT BY IT 1 OSD HP EXIT SERVICE MENU MAIN MENU SCREEN A SUB MENU PICTURE SUB MENU HIGH LIGHT...

Page 13: ...4 IC701 MENU F901 PW TU001 POWER SW S901 DEG HVT UPPER FOCUS LOWER SCREEN REMOCON RECEIVER POWER ON TIMER VOL CH T FRONT MAIN PWB CRT SOCKET PWB SOLDER SIDE 1 Pin TP 91 B1 2 Pin NC 3 Pin TP E 1 3 IC201 VCO T111 C MPX X 1 3 TP E E1 TP 47B T U CRT EARTH BRAIDED ASS Y TOP ...

Page 14: ... mode and TV mode are linked each other Video mode 8 EXT PIC 9 EXT BRI 10 EXT COL and 11 EXT TINT TV mode 1 PICTURE 2 BRIGHT 5 COL NTSC and 6 TINT When the setting items in the TV mode are adjusted the same values will be set to the linking items in the video mode For example if the value of 1 PICTURE is changed the value of 8 EXT PIC will also be changed accordingly The initial setting values giv...

Page 15: ...DETAIL 15 0 5 G DRIVE 99 50 22 0 B DRIVE 99 50 54 0 R CUT 10 0 0 G CUT 10 0 0 B CUT 10 0 0 VIDEO STATUS OTHERS Setting item Variable range Initial setting value 1 OSD HP 000 063 023 2 OSD VP 000 015 012 3 H CK SW 000 001 000 Setting item Variable range Initial setting value R CUTOFF 000 255 020 G CUTOFF 000 255 020 B CUTOFF 000 255 020 LOW LIGHT Setting item Variable range Initial setting value G ...

Page 16: ... menu screen VCO CW from the SERVICE MENU More specifically in the SERVICE MENU press the MENU 1 4 key to select VCO CW and then press the MENU 2 3 key to enter the sub menu screen VCO CW 3 Confirm that the color of TOO HIGH and TOO LOW changes in yellow as you turn the CW TRANSF At this time check that SYNC YES appears on the screen 4 Slowly turn the CW TRANSF until BELOW REFERENCE changes to yel...

Page 17: ...if necessary 60Hz 1 Receive a cross hatch signal NTSC or PAL M 2 Select the sub menu screen PICTURE from the SERVICE MENU 3 Select 54 H POS 60 with the MENU 1 4 key 4 Confirm the initial setting value of 54 H POS 60 5 Adjust 54 H POS 60 so that the screen will be horizontally cen tered with the MENU 2 3 key 50Hz 1 Receive a cross hatch signal PAL N 2 In the sub menu screen PICTURE select 48 H POS ...

Page 18: ...control unit to produce a single horizontal line 5 Turn the SCREEN VR fully counterclockwise then slowly turn it clockwise to where a red blue or green color is faintly vis ible 6 Use keys 4 9 on the remote control unit and adjust the other 2 colors to where the single horizontal line becomes white 7 Turn the SCREEN VR to where the single horizontal line glows faintly 8 Press the 2 key to stop pro...

Page 19: ...ue make fine adjustment until you get the best contrast with the MENU 2 3 key Method of adjustment without measuring instrument PAL M COLOR 1 Receive a PAL M broadcast 2 Select the sub menu screen PICTURE from the SERVICE MENU 3 Select 3 COL PALM with the MENU 1 4 key and confirm its initial setting value 4 If the color is not the best with the initial set value make fine adjustment until you get ...

Page 20: ...gnal 75 white 2 In the sub menu screen PICTURE select 4 COL PALN with the MENU 1 4 key and confirm its initial setting value 3 Connect the oscilloscope between TP 47B and TP E 4 Adjust 4 COL PALN to set the value A in the figure to 8V W B with the MENU 2 3 key NTSC COLOR 1 Receive a NTSC full field color bar signal 75 white 2 In the sub menu screen PICTURE select 5 COL NTSC with the MENU 1 4 key a...

Page 21: ... Cy Y W G B Measuring Item Test point Adjustment part instrument Setting Remote TINT of control unit COLOR VIDEO PICTURE STATUS BRIGHT DETAIL G DRIVE B DRIVE R CUT G CUT B CUT Description NOTE Do not adjust Each value should be set to the initial value 1 Select the sub menu screen VIDEO STATUS CINEMA from the SERVICE MENU 2 Select TINT B CUT with the MENU 1 4 key and reset each value to the initia...

Page 22: ...Hz with the MENU 2 3 key 7 Again select 3 FH MON with the MENU 1 4 key and return its setting value from 1 to 0 with the MENU 2 3 key 1 Receive a NTSC RF signal non modulated sound signal from the Antenna terminal 2 Connect a 1 MΩ resistor across pins 4 and 3 of the MPX con nector 3 Select the sub menu screen SOUND from the SERVICE MENU 4 Select 9 5FH MON with the MENU 1 4 key and change its setti...

Page 23: ...6 X RAY PROTECTION CHECK Measuring Item Test point Adjustment part instrument Check of Pins 1 and 3 X RAY PROTEC X Connector TION on MAIN PWB Description Prepare the following resistor 15 0kΩ 1 1 4W 1 Turn on the power and receive any signal 2 Connect the resistor between pins 1 and 3 of the X connector on the Main PW Board 3 Make sure that the picture disappears 4 Unplug the AC power cord 5 Disco...

Page 24: ...a green raster signal from the signal generator and turn the screen to green raster 5 Move the deflection yoke backward 6 Bring the long lug of the purity magnets on the short lug and position them horizontally Fig 2 7 Adjust the gap between two lugs so that the green raster will come into the center of the screen Fig 3 8 Move the deflection yoke forward and fix the position of the deflection yoke...

Page 25: ...nta red blue 3 Using 6 pole convergence magnets overlap the magenta red blue and green lines in the center of the screen to turn them to white 4 Repeat 2 and 3 above and make best convergence DYNAMIC CONVERGENCE ADJUSTMENT 1 Move the deflection yoke up and down and overlap the lines in the periphery Fig 2 2 Move the deflection yoke left to right and overlap the lines in the periphery Fig 3 3 Repea...

Page 26: ...line is detected Operation of CRT NECK protec tion circuit Operation of X ray protection cir cuit Method of detection The microcomputer detects the possible abnormality at 1 sec intervals If NG state is detected for more than 1 ms the microcomputer judges that there is an abnormal ity DITTO DITTO State of abnormality When an abnormality has been detected the SUB POWER is turned off While the SUB P...

Page 27: ...AV 14F3PX No 56083 36 CTH 0009 CRT AV14F3PHPXSK 3 VICTOR COMPANY OF JAPAN LIMITED TELEVISION RECEIVER DIVISION 1106 Heta Iwai city Ibaraki prefecture 306 0698 Japan ...

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