JVC InteriArt AV-28R47SK Service Manual Download Page 28 | Manualshive

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1-28 (No.YA061)

SECTION 5

TROUBLE SHOOTING

This service manual does not describe TROUBLE SHOOTING.

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Summary of Contents for InteriArt AV-28R47SK

Page 1: ... No YA061 2004 3 COLOR TELEVISION YA061 2004 3 AV 28R47SK AV 32R47SK TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 6 4 ADJUSTMENT 1 13 5 TROUBLE SHOOTING 1 28 1 4 7 2 5 8 0 3 6 9 P AV TV OK MENU P TV F T L BASIC CHASSIS JW ...

Page 2: ...67 4cm V 38 4cm High Voltage 31 0kV 1kV 1 5kV at zero beam current Speaker MAIN 6 5cm 13cm oval type 2 CENTER 4cm 16cm oval type 1 Audio Power Output MAIN 10W 10W CENTER 10W Aerial Input Terminal 75 Ω unbalanced coaxial EXT 1 EXT 2 EXT 3 Input Output 21 pin Euro connector SCART socket 3 EXT 4 Video Audio 1V p p positive negative sync provided 75Ω RCA pin jack 1 500mV rms 4dBs high impedance RCA pi...

Page 3: ...afety characteristics are identified in the Parts List of Service Manual Electrical components having such features are identified by shading on the schematics and by on the Parts List in the Service Manual The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may cause shock fire or oth...

Page 4: ...mpedance Used R1 Used R2 Used R3 3 AUDIO L output 500mV rms Nominal Low impedance Used TV OUT Used LINE OUT Not used 4 AUDIO GND Used Used Used 5 GND B Used Used Used 6 AUDIO L input 500mV rms Nominal High impedance Used L1 Used L2 Used L3 7 B input 700mV B W 75Ω Used Used Not used 8 FUNCTION SW SLOW SW Low 0V 3V High 8V 12V High impedance Used Used Used 9 GND G Used Used Used 10 SCL T V LINK Not ...

Page 5: ...trol 34 AudoIn5L I Audio Left 98 P10 Int1 I AV_LINK control 35 AudioIn5R I Audio Right 99 P11 TO O AV_LINK control 36 AudOutSL O Audio Left 100 V1 8C2 I 1 8V 37 AudOutSR O Audio Right 101 VssC2 GND 38 DecsDem Not used 102 P04 I2SWs O I2S bus WS for DSP 39 QssO AmO AudeEm Not used 103 P03 I2SClk I I2S bus clock for DAC 40 Gnd2 GND 104 P02 I2SDo2 I O I2S bus Dout for audio 41 PllIf Not used 105 P01 ...

Page 6: ...n in the Fig 3 3 Remove the 2 claws G under the CHASSIS as shown in Fig 1 4 Remove the AV TERMINAL BOARD slightly in the direction of arrow H as shown in Fig 1 3 1 7 REMOVING THE SPEAKER GRIL Remove the REAR COVER 1 Remove the 8 screws J as show in Fig 3 2 Remove the SPEAKER GRIL 3 1 8 REMOVING THE MAIN SPEAKER Remove the REAR COVER 1 Remove the 2 screws L as show in Fig 3 2 Remove the MAIN SPEAKE...

Page 7: ... BASE FRONT CONTROL PWB D C C B J CN810K CN810F CN810S SPEAKER GRIL FRONT CABINET CRT SOCKET PWB MAIN SPEAKER CENTER SPEAKER POWER DEF PWB E F A L L N N REAR COVER CHASSIS BASE SPACER AV JACK PWB AV TERMINAL BOARD CLAW CLAW MAIN PWB DOLBY PWB POWER CORD ...

Page 8: ...ting steps The CRT change table should preferably be smaller that the CRT surface and its height be about 35cm Fig 4 Fig 5 Fig 6 COATING OF SILICON GREASE FOR ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION Subsequent to replacement of the CRT and HV transformer or repair of the anode cap etc by dismounting them be sure to coat silicon grease for electrical insulation as shown in Fig 7 Wipe aro...

Page 9: ...items Where these differ select the addres with the FUNCTION UP DOWN key and adjust it with the FUNCTION RIGHT LEFT keys The letter of the selected item is displayed in yellow 5 A setup will become effective if the main power is shut off 5 Receiving channel setting Refer to the OPERATING INSTRUCTIONS and set the receive channels Channels Preset as described 6 User settings Check the user setting i...

Page 10: ...ESET COLOUR TEMP NORMAL FEATURES AUTO VNR AUTO COLOUR SYSTEM TV PAL EXT AUTO 4 3 AUTO ASPECT PANORAMIC Setting item Setting position STEREO I II Stereo sound BASS Centre TREBLE Centre BALANCE Centre SUROUND MODE DOLBY PRO LOGIC II TV SPEAKER L C R LEFT MAX CENTRE MAX RIGHT MAX LS MAX RS MAX WOOFER MAX DISTANCE 0 METERS Setting item Setting position SLEEP TIMER OFF BLUE BACK ON CHILD LOCK Refer to ...

Page 11: ...DRIVE 3 B DRIVE 2 V C 1 SCREEN 2 CUTOFF R G 3 WDR R G B 4 BRIGHT 5 CONT 6 COLOUR 7 HUE 8 BLACK OFFSET B Y 9 SHARP 10 Y DELAY 11 TINT DVD 12 RGB BLK 6 VPS Do not adjust VPS PDC WSS SN 3 AUDIO Do not adjust 1 DCX0 ADJ 2 NICAM LOWER ERRLIM 3 NICAM UPPER ERRLIM 4 A2 ID THR 7 SHIPPING Do not adjust ON OFF 4 DEF 1 V SHIFT 2 V SLOPE 3 V SIZE 4 H CENT 5 H SIZE 6 TRAPEZ 7 EW PIN 8 COR UP 9 COR LOW 10 ANGLE...

Page 12: ...he tweezers 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 in...

Page 13: ...ce adjustment 4 2 PRESET SETTING BEFORE ADJUSTMENT Unless otherwise specified in the adjustment items preset the following functions with the REMOTE CONTROL UNIT 4 3 MEASURING INSTRUMENT AND FIXTURES 1 DC voltmeter or digital voltmeter 2 Oscilloscope 3 Signal generator Pattern generator PAL NTSC 4 Remote control unit 4 4 ADJUSTMENT ITEMS CHECK ITEM B1 POWERSUPPLY check HIGH VOLTAGE check IF VCO ch...

Page 14: ... CRT SOCKET PWB TP 47B E1 SOLDER SIDE HVT 1 5 1 B1 2 N C 3 X ray 4 X ray 5 GND AV JACK PWB CN001 CN002 TUNER DOLBY PWB AV 28R47SK AV 32R47SK CN009 S SW SC IC702 TP 47G TP 47R TP E RT CN008 MEMORY IC CN3008 CN3009 SC VM2 FOCUS1 FOCUS2 SCREEN FOCUS1 SCREEN TOP SIDE CONTROL PWB POWER CORD POWER SW FRONT POWER LED D8801 IC8851 F8901 FRONT CONTROL PWB B ...

Page 15: ...is mode adjusts the setting values of the VIDEO circuit 3 AUDIO This mode adjusts the setting values of the multiplicity AUDIO circuit Do not adjust 4 DEF This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below 5 VSM PRESET This mode adjusts the initial setting values of COOL NORMAL and WARM VSM Video Status Memory 6 VPS This mode shows the monitor of the VP...

Page 16: ...AM LOWER ERRLIM 3 NICAM UPPER ERRLIM 4 A2 ID THR AUDIO 3 AUDIO 1 DCX0 ADJ NOT NICAM 1 VCO 1 IF 2 DELAY POINT BRIGHT STD SOFT 5 VSM PRESET VSM PRESET BRIGHT 1 BRIGHT 1 BRIGHT 2 CONT 3 COLOUR 4 SHARP 5 HUE 1 R DRIVE 2 G DRIVE 3 B DRIVE Do not adjust Do not adjust PICTURE MODE COOL NORM WARM COLOR TEMP 1 SCREEN 2 CUTOFF R G 3 WDR R G B 4 BRIGHT 5 CONTRAST 6 COLOUR 7 HUE 12 RGB BLK 8 BLACK OFFSET 9 SH...

Page 17: ...FF RED 63 63 0 0 0 0 GREEN 63 63 0 0 0 0 3 WDR RED 63 63 0 0 0 0 GREEN 63 63 0 0 0 0 BLUE 63 63 0 0 0 0 4 BRIGHT 63 63 0 0 0 0 5 CONTRAST 63 63 10 10 10 0 6 COLOUR 63 63 0 0 0 0 7 HUE 63 63 0 0 8 BLACK OFFSET B Y 0 3 Setting item Variable range Setting value PAL NTSC NTSC4 43 RGB RF VIDEO RF VIDEO RF VIDEO 9 SHARP 63 63 5 5 5 5 5 5 5 Setting item Variable range Setting value PAL NTSC NTSC4 43 RGB ...

Page 18: ...0 0 0 0 0 0 6 TRAPEZ 32 31 4 0 0 0 2 0 0 0 0 0 0 0 7 EW PIN 32 31 15 0 0 0 0 0 0 0 0 0 0 0 8 COR UP 32 31 0 0 0 0 0 0 0 0 0 0 0 0 9 COR LO 32 31 0 0 0 0 7 0 0 0 0 0 0 0 10 ANGLE 32 31 0 0 0 0 0 0 0 0 0 0 0 0 11 BOW 32 31 0 0 0 0 0 0 0 0 0 0 0 0 12 V S COR 32 31 14 0 10 0 4 0 0 0 0 0 0 0 13 V LIN 32 31 3 0 6 0 8 0 0 0 0 0 0 0 Item Variable range Setting value PICTURE MODE COLOUR TEMP BRIGHT STANDAR...

Page 19: ... Chassis GND 2 V C 12 RGB BLK 1 Receive the any broadcast 2 Select 2 V C from the SERVICE MENU 3 Select 12 RGB BLK 4 Press the FUNCTION key to find the cut off screen Black screen 5 Connect a HV voltmeter to CRT ANODE and chassis GND A ground side is connected previously 6 Make sure that the voltage is DC 31 0kV 1kV 1 5kV 7 Press the FUNCTION key to return to service menu NOTE When removing a prov...

Page 20: ... A part horizontal line may become uniform at the line centre and its periphery Fig 1 5 Make sure that when the screen is darkened the lines remain in good focus Fig 1 FOCUS AV 28R47SK Signal generator FOCUS VR In HVT 1 Receive the crosshatch signal 2 Set the ZOOM mode to FULL 3 While looking at the screen adjust the FOCUS VR to the vertical and horizontal lines will be clear and infine detail 4 M...

Page 21: ...lect 4 DEF from the SERVICE MENU 4 Select 1 V SHIFT 5 Set the initial setting value of 1 V SHIFT 6 Adjust vertical position to make A B 7 Check the adjustment value above in other zoom mode If it is a wrong adjustment re adjust in FULL mode and adjust by 1 V SHIFT 8 Press the MENU key and memorize the set value V SIZE Signal generator Remote control unit 4 DEF 3 V SIZE 1 Receive the crosshatch sig...

Page 22: ... table 7 Make sure that the horizontal screen size of the each ASPECT mode is in the below table 8 Press the MENU key and memorize the set value NOTE 14 9 ZOOM and REGULAR are length of 90 The value in shows NTSC adjustment value SIDE PIN Signal generator Remote control unit 4 DEF 7 EW PIN 1 Receive the crosshatch signal 2 Set the ZOOM mode to FULL 3 Select 4 DEF from the SERVICE MENU 4 Select 7 E...

Page 23: ...itial setting value of 8 COR UP 6 Adjust to bring the straight line at the upper corner 7 Select 9 COR LO 8 Set the initial setting value of 9 COR LO 9 Adjust to bring the straight line at the low corner 10 Press the MENU key and memorize the set value ANGLE Signal generator Remote control unit 4 DEF 10 ANGLE In case where there is a parallelogrammical distortion of images on the screen 1 Receive ...

Page 24: ...rator Remote control unit 4 DEF 12 V S CR 13 V LIN When the vertical linearity has been deteriorated remarkably perform the following steps 1 Receive the crosshatch signal 2 Set the ZOOM mode to FULL 3 Select 4 DEF from the SERVICE MENU 4 Select 13 V LIN 5 Set the initial setting value of 13 V LIN 6 Select 12 V S COR 7 Set the initial setting value of 12 V S COR 8 Adjust 13 V LIN and 12 V S COR so...

Page 25: ... you get the best brightness 8 Press the MENU key and memorize the set value SUB CONTRAST Remote control unit 2 V C 5 CONT 1 Receive the any broadcast 2 Set the ZOOM mode to FULL 3 Set the PICTURE mode to STD 4 Select 2 V C from the SERVICE MENU 5 Select 5 CONT 6 Set the initial setting value of 5 CONT 7 If the contrast is not the best with the initial setting value make fine adjustment until you ...

Page 26: ...f A in the illustration to the values as shown given billow Voltage difference between white W and blue B 4 Press the MENU key and memorize the set value NTSC 4 43 COLOUR 1 When NTSC 3 58 COLOUR set NTSC 4 43 COLOUR will automatically set SUB HUE 1 Remote control unit 2 V C 7 HUE Method of adjustment without measuring instrument NTSC 3 58 1 Input the NTSC 3 58MHz COMPOSITE VIDEO signal full field ...

Page 27: ...GE W M 3V VOLTAGE SETTING Voltage setting Item Measuring instrument Test point Adjustment part Description VSM PRESET Remote control unit 5 VSM PRESET BRIGHT STD SOFT 1 BRIGHT 2 CONT 3 COLOUR 4 SHARP 5 HUE COOL WARM NORMAL 1 R DRIVE 2 G DRIVE 3 B DRIVE 1 Set the ZOOM mode to FULL 2 Select 5 VSM PRESET from the SERVICE MENU 3 Press the MENU key and set the PICTURE MODE to BRIGHT 4 Adjust the FUNCTI...

Page 28: ...1 28 No YA061 SECTION 5 TROUBLE SHOOTING This service manual does not describe TROUBLE SHOOTING ...

Page 29: ... No YA061 AV MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12 3 chome Moriya cho kanagawa ku Yokohama kanagawa prefecture 221 8528 Japan VICTOR COMPANY OF JAPAN LIMITED WPC Printed in Japan ...

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