JVC AV-28KT1BUF Service Manual Download Page 7 | Manualshive

Page: 7 / 24

background image

(No.52137)1-7

Fig.1

x4

x2

x4

x4

x4

x4

x2

x2

x2

x8

LED PWB

POWER SWITCH PWB

MAIN PWB

BASE

REAR COVER

BACK DOOR

CRT SOCKET PWB

SPEAKER

SIDE CONTROL
PWB

B

A

C

D

E

F

H

G

I

I

«
...
5
6
7
8
9
...
»

Summary of Contents for AV-28KT1BUF

Page 1: ...NY OF JAPAN LIMITED No 52137 2003 9 COLOUR TELEVISION 52137 2003 9 AV 28KT1BUF A B C AV 28KT1SUF A B C TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 6 4 ADJUSTMENT 1 10 5 TROUBLESHOOTING 1 23 RM C1100TV ...

Page 2: ...Hz 6 0MHz D K 32 4MHz 6 5MHz L 40 4MHz 6 5MHz L Colour Sub Carrier Frequency PAL 4 43MHz SECAM 4 43MHz NTSC 3 58MHz 4 43MHz Power Input AC220V AC240V 50Hz Power Consumption 120W Max 3W Standby Aerial Input Terminal 75Ω unbalanced coaxial Picture Tube Visible size 66cm Measured diagonally High Voltage 30kV Speaker Main 5 7cm 16cm oval type 2 Audio Output 10W 10W Input Video 1V p p 75Ω S Video Y 1V ...

Page 3: ...ments or alternatives 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 10kΩ 2W resistor to the anode button 8 When service is requ...

Page 4: ...e Used L1 Used L2 7 B input 700mV B W 75 Ω Used Used 8 FUNCTION SW SLOW SW Low 0V 3V High 8V 12V High impedance Used Used 9 GND G Used Used 10 SCL T V LINK Not used Used SCL TV LINK 11 G input 700mV B W 75 Ω Used Used 12 SDA3 Not used Not used 13 GND R Used Used 14 GND YS Used Used 15 R C input R 700mV B W 75 Ω C 300mV P P 75 Ω Used R Used C2 R 16 Ys input FAST SW Low 0V 0 4V 75 Ω High 1V 3V 75 Ω ...

Page 5: ...es itself automatically to stand by mode WSS Wide Screen Signaling NTSC Playback 2 3 MAIN DIFFERENCE LIST 2 4 DIFFERENCE LIST BY ELECTRONICS 2 5 DIFFERENCE LIST BY OSD LANGUAGE Part Name AV 28KT1BUF AV 28KT1SUF MODEL COLOUR BLACK MODEL SILVER MODEL FRONT CABINET VE 20121492 VE 20119985 BACK COVER VE 20121494 VE 20111863 BACK DOOR VE 20108124 VE 20120043 FUNCTION BUTTON VE 20091798 VE 20096498 POWE...

Page 6: ...screws F 2 Remove the BASE NOTE Work after fixing so that a CRT screen may be placed upside down or it may not fall 3 1 7 REMOVING THE POWER SWITCH PWB Remove the REAR COVER Remove the BASE 1 Remove the 2 screws G and remove the POWER SWITCH PWB 3 1 8 REMOVING THE LED PWB Remove the REAR COVER Remove the BASE Remove the POWER SWITCH PWB 1 Remove the 2 screws H and remove the LED PWB 3 1 9 CHECKING...

Page 7: ... No 52137 1 7 Fig 1 x4 x2 x4 x4 x4 x4 x2 x2 x2 x8 LED PWB POWER SWITCH PWB MAIN PWB BASE REAR COVER BACK DOOR CRT SOCKET PWB SPEAKER SIDE CONTROL PWB B A C D E F H G I I ...

Page 8: ...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 9: ...e A P S press the STANDARD key 6 After A P S is finalized the PROGRAM menu appears again 7 Press STANDARD key to exit main menu Setting Item Setting Value Setting Item Setting Value SOUND MENU FEATURE MENU BALANCE CENTER SLEEP TIMER OFF BASS CENTER CHILD LOCK OFF TREBLE CENTER LANGUAGE ENGLISH HYPER SOUND OFF EXT 2 OUTPUT TV PICTURE MENU BLUE BACKGROUND ON BRIGHTNESS These adjust are automatically...

Page 10: ...pare the most suitable reception or input signal for adjustment 6 Never touch any adjustment parts which are not specified in the list for this adjustment variable resistors transformers condensers etc 7 Presetting before adjustment Unless otherwise specified in the adjustment instructions preset the following functions with the remote control unit 4 2 MEASURING EQUIPMENT 1 DC voltmeter or digital...

Page 11: ... displayed Fig 2 4 5 2 SELECTION OF ADJUSTMENT ITEMS 1 Enter the SERVICE MENU and select ADJUST 2 Press the key and select the ADJUSTMENT ITEM 3 Press the key and set the SETTING VALUE 4 Changed values are stored automatically 4 5 3 HOW TO EXIT SERVICE MODE 1 Press the MENU key SERVICE ADJUST OPTIONS AK45JA AK45JA SERVICE MENU Select for adjustment Do not adjust ADJUST SETTING ITEM No SETTING VALU...

Page 12: ... value the set will not function correctly Do Not Adjust SERVICE ADJUST OPTIONS AK45JA AK45JA SERVICE MENU ADJUST SETTING ITEM No 000 143 SETTING VALUE 000 001 002 003 004 005 006 007 008 009 ADJUST MENU OPTIONS SETTING ITEM No 000 063 SETTING VALUE 000 001 002 003 004 005 006 007 008 009 OPTIONS MENU ...

Page 13: ...t adjust 019 4 3 Horz Blank Stop Do not adjust 020 EHTV compensation 021 EHTTM compensation 022 EHTEW compensation 023 WDR Video processor adjust itself 024 WDG 025 WDB 026 CR 027 CG 028 CB 029 COR coring level 030 REGULAR VERT_POS Vertical Position 031 REGULAR VERT_AMPL Vertical Amplitude 032 REGULAR VERT_SCOR Vertical S Correction 033 REGULAR VERT_SSYM Vertical S Symmetry 034 REGULAR TRAPEZE 035...

Page 14: ...1 16 9 ZOOM SUBTITLE VERT_AMPL Not used 072 16 9 ZOOM SUBTITLE VERT_SCOR Not used 073 16 9 ZOOM SUBTITLE VERT_SSYM Not used 074 16 9 ZOOM SUBTITLE TRAPEZE Not used 075 16 9 ZOOM SUBTITLE CUSHION Not used 076 16 9 ZOOM SUBTITLE HOR_COR_SYM Not used 077 16 9 ZOOM SUBTITLE HOR_CORNER Not used 078 16 9 ZOOM SUBTITLE HORZ_POS Not used 079 16 9 ZOOM SUBTITLE HORZ_AMPL Not used 080 OSD Position 081 BCLTH...

Page 15: ...HT MODE CONTRAST 123 SOFT MODE BRIGHTNESS 124 SOFT MODE COLOUR 125 SOFT MODE CONTRAST 126 PERSONAL MODE FACTORY SETTING BRIGHTNESS Fixed 127 PERSONAL MODE FACTORY SETTING COLOUR Fixed 128 PERSONAL MODE FACTORY SETTING CONTRAST Fixed 129 SCINC FOR PANORAMIC MODE 130 SCINC1 FOR PANORAMIC MODE 131 VOLUME AFTER APS 132 VERTICAL SCROLL 133 14 9 HORIZONTAL START Not used 134 14 9 HORIZONTAL STOP Not use...

Page 16: ...Enter the OPTIONS MENU 2 Select option No 002 and change bit 6 from 0 to 1 disabling vertical scan Then horizontal line appears 3 Adjust horizontal line as thin as possible via screen adjust pot 4 Press number 0 key to leave service menu Item Measuring instrument Test point Adjustment part Description AGC adjustment Signal generator Remote control unit Volt meter 003 1 Receive a PAL BG signal at 6...

Page 17: ...mproper after some other geometric adjustments are done 7 Select 111 16 9 mode 8 Adjust 111 in the same procedure VERTICAL S CORRECTION LINEARITY adjustment Signal generator Remote control unit 032 033 112 16 9 mode 113 16 9 mode 1 Receive a PAL cross hatch signal 2 Enter the SERVICE MENU 3 Select ADJUST MENU 4 Select 032 5 Adjust 032 till the size of squares on both the upper and lower part of cr...

Page 18: ...039 5 Adjust 039 until vertical lines on both the left and right part of the cross hatch will be visible nor screen will be so wide 6 Check and readjust 039 item if the adjustment becomes improper after some other geometric adjustments are done 7 Select 119 16 9 mode 8 Adjust 119 in the same procedure ANGLE adjustment Signal generator Remote control unit 016 1 Receive a PAL cross hatch signal 2 En...

Page 19: ...re frame become parallel to the both sides of picture tubes as close as possible 6 Check and readjust 034 item if the adjustment becomes improper after some other geometric adjustments are done 7 Select 114 16 9 mode 8 Adjust 114 in the same procedure SIDE PIN adjustment Signal generator Remote control unit 035 115 16 9 mode 1 Receive a PAL cross hatch signal 2 Enter the SERVICE MENU 3 Select ADJU...

Page 20: ... Adjust 117 in the same procedure as 8 ROTATION adjustment Signal generator Remote control unit 083 1 Receive a PAL cross hatch signal 2 Enter the SERVICE MENU 3 Select ADJUST MENU 4 Select 083 5 Adjust 083 to rotate the complete master clock wise and counter clock wise depending on the CRT 6 Check and readjust 083 item if the adjustment becomes improper after some other geometric adjustments are ...

Page 21: ...ide of the screen 6 Check and readjust 136 item if the adjustment becomes improper after some other geometric adjustments are done TELETEXT SCREEN adjustment Signal generator Remote control unit 143 1 Receive a PAL cross hatch signal 2 Enter the SERVICE MENU 3 Select ADJUST MENU 4 Select 143 5 Adjust 143 to adjust the proper vertical size of Teletext screen 6 Check and readjust 143 item if the adj...

Page 22: ...unit 006 1 Receive a PAL colour bar signal 2 Enter the SERVICE MENU 3 Select ADJUST MENU 4 Select 006 5 Adjust 006 till the colour transients on the colour bar pattern becomes as sharper and possible as colours between transients do not mix with each other SECAM Y DELAY adjustment Signal generator Remote control unit 007 1 Receive a SECAM colour bar signal 2 Enter the SERVICE MENU 3 Select ADJUST ...

Page 23: ... No 52137 1 23 SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING ...

Page 24: ... No 52137 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 ...

Reviews:

No comments

Related manuals for AV-28KT1BUF

Brand: Panasonic Pages: 116

Brand: Philips Pages: 4

Brand: Falcon Pages: 24

Brand: Symphonic Pages: 4

Brand: FUNAI Pages: 8

Brand: Noblex Pages: 48

Brand: Haier Pages: 48

Brand: Haier Pages: 14

Brand: Haier Pages: 11

Brand: Haier Pages: 13

Brand: Haier Pages: 13

Brand: MYE Pages: 23

Brand: Strong Pages: 34

Brand: Toshiba Pages: 34

FSTPURE ColorStream 14AF42

Brand: Toshiba Pages: 37

Brand: Toshiba Pages: 46

Brand: Toshiba Pages: 61

Brand: Toshiba Pages: 63

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands