JVC AV-28BT8ENS Service Manual

Text of JVC AV-28BT8ENS User Guide:

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 24 EXPLODED VIEW PARTS LIST ! Ref.No. Part No. Part Name Description ! V01 VE-30002751 PICTURE TUBE (ITC) ! L01 VE-30002138 DEG COIL ! TR601 VE-30017522 FBT Within MAIN PWB ! 1 VE-20083491 BUTTON ON/OFF (SILVER MODEL) ! 1 VE-20069016 BUTTON ON/OFF (BLACK MODEL) 2 VE-35004544 SPRING ! 3 VE-20069218 LENS (except AV-28BT80EN,AV-28BT80EP,AV-28BS88EN) ! 3 VE-20096162 LENS SILVER (AV-28BT80EN,AV-28BT80EP,AV-28BS88EN) ! 4 VE-20078776 LENS LE

• No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80E P A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 21 ■ ■■ ■ WHITE BALANCE ADJUSTMENT Item Measuring instrument Test point Ad justment part Description WHITE BALANCE adjustme nt (Low light) Signal generator Remote control unit WR WG WB 1. Receive a bla ck & whit e sign

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 16 ■ ■■ ■ AGC AUTOMAT ICALLY AD JUSTMENT Item Measuring instrument Test point Ad justment part Description AG C AUTOMATIC- AL LY adjustme nt & check Remote control unit AG C 1. Enter SE RVICE MENU. 2. Receive a 60dBμV RF sign al leve l. 3. Select AGC with th e FUNCTI ON ( / ) key. 4. Press BLUE ke y on th e r emot e co ntr ol unit. 5. Then the adjustment will be done automatically by software. 6. Se e th e AGC indica tor o n S ERVICE M

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80E P A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 9 SERVICE MENU SELECT KEY MEMORY IC REPLACEMENT 1. Memory IC This model use a memory IC. This memo ry I C st ores d ata for pr op er op eratio n of the video an d def lection circu it s. When replacing, be sure to use an IC containing this (initial value) data. 2. Memory IC replacemen t procedure (1) Power off Switch of f t he p ower an d discon nec t th e po wer co rd from the wall outlet. (2) Replace the memory IC Init ial value must be entered into the new IC. (3) Power on Con nect th e p

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80E P A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 13 ■ ADJUSTMENT ITEM & INITIAL (Recommended) SETTING VALUE in the SERVICE MENU 1/2 ADJUSTMENT ITEM DESCRIPTION INITIAL VALUE OSD HORIZONTAL POSI TION OF OSD 065 IF1 IF COARS E ADJUSTMENT 004 IF2 IF FINE ADJUSTMENT 065 IF3 IF COARS E ADJUSTMENT FOR L-P RI ME 004 IF4 IF FINE ADJUS TMENT FO R L-PRIME 065 AGC AUTOMATIC GAIN CO NT RO L Automatic ally VLIN VERTICA L LINE ARITY Not used RGBH RGB MODE HORIZONTAL SHIFT OFFSET 007 VSOF VERTICA L SIZE OFFSET for 6 0Hz

• No.52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80E P A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 5 FEATURES " 10 0 pro gr ammers f r om V HF, UHF b and s or ca ble ch an nels can b e pres et. " It has two Euroconnector sockets for external devic es (such as vide o reco rd er, vid eo games , a udio set, e tc.) &quo

• JVC AV-28BT8ENS, No.52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 8 REPLACEMENT OF CHIP COMPONENT ! CAUTIONS 1. Avoid heating for more than 3 seconds. 2. Do n ot rub t he elect ro des an d t he r esist p arts of th e p att ern. 3. W hen removing a c hip part, m elt th e s older adequ ate ly. 4. Do n ot reuse a ch ip p art afte r re moving it . ! SOLDERING IRON 1. Use a hig h ins ulatio n s oldering ir on with a t hin po inted e nd of it . 2. A 3 0w s oldering iron is rec om mend ed for easily r emoving p

• JVC AV-28BT8ENS, No. 52057 A V-28BT8EES / AV-28BT8EEB 38 ! Symbol No. Part No. Part Name Description DIODE D601 VE-30001329 DIODE D603 VE-30001285 DIODE D605 VE-30001320 DIODE D606 VE-30001323 DIODE D609 VE-30001318 DIODE D610 VE-30001318 DIODE D613 VE-30001318 DIODE D614 VE-30001285 DIODE D616 VE-30003696 DIODE D617 VE-30001318 DIODE D651 VE-30001285 DIODE D653 VE-30001285 DIODE D656 VE-30007763 ZENER DIODE D657 VE-30007763 ZENER DIODE D658 VE-30007763 ZENER DIODE D659 VE-30001350 ZENER DIODE D660 VE-30001347 ZENER DIODE D661 VE-30001350 ZENER DIODE

• JVC AV-28BT8ENS, No. 52057 A V-28BS88EN 39 PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS’Y (VE-20101578) ! Symbol No. Part No. Part Name Description RESISTOR R102 VE-30012657 SMD RES. 1/16W 1K J R103 VE-30012657 SMD RES. 1/16W 1K J R106 VE-30012713 SMD RES. 1/16W 75R J R107 VE-30012649 SMD RES. 1/16W 150R J R109 VE-30012713 SMD RES. 1/16W 75R J R110 VE-30012713 SMD RES. 1/16W 75R J R111 VE-30012649 SMD RES. 1/16W 150R J R113 VE-30012713 SMD RES. 1/16W 75R J R114 VE-30012713 SMD RES. 1/16W 75R J R115 VE-3001271

• JVC AV-28BT8ENS, No. 52057 A V-28BT8EES / AV-28BT8EE B 35 PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS’Y (VE-20101622) ! Symbol No. Part No. Part Name Description RESISTOR R102 VE-30012657 SMD RES. 1/16W 1K J R103 VE-30012657 SMD RES. 1/16W 1K J R106 VE-30012713 SMD RES. 1/16W 75R J R107 VE-30012649 SMD RES. 1/16W 150R J R109 VE-30012713 SMD RES. 1/16W 75R J R110 VE-30012713 SMD RES. 1/16W 75R J R111 VE-30012649 SMD RES. 1/16W 150R J R113 VE-30012713 SMD RES. 1/16W 75R J R114 VE-30012713 SMD RES. 1/16W 75R J R115 VE-30012713 SMD RES. 1/16W 75R J R117 VE-30000792 CF RES. 1/4W 75R J R118

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80E P A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 23 PARTS LIST CONTENTS ! USI NG PW BOAR D & REMOTE CO NT ROL U NI T ･････････････････････････････････････････････････････ 23 ! EXPLODED VIEW PARTS LIST ･････････････････････････････････････････････････････････････････････ 24 ! EXPLODED VIEW ･･･････

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN 29 ! Symbol No. Part No. Part Name Description DIODE D601 VE-30001329 DIODE D603 VE-30001285 DIODE D605 VE-30001320 DIODE D606 VE-30001323 DIODE D609 VE-30001318 DIODE D610 VE-30001318 DIODE D613 VE-30001318 DIODE D614 VE-30001285 DIODE D616 VE-30003696 DIODE D617 VE-30001318 DIODE D651 VE-30001285 DIODE D653 VE-30001285 DIODE D656 VE-30007763 ZENER DIODE D657 VE-30007763 ZENER DIODE D658 VE-30007763 ZENER DIODE D659 VE-30001350 ZENER DIODE D660 VE-30001347 ZENER DI

• No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN 26 PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS’Y (VE-20101577) ! Symbol No. Part No. Part Name Description RESISTOR R102 VE-30012657 SMD RES. 1/16W 1K J R103 VE-30012657 SMD RES. 1/16W 1K J R106 VE-30012713 SMD RES. 1/16W 75R J R107 VE-3

• JVC AV-28BT8ENS, SCHEMATIC DIAGRAMS COLOUR TELEVISION No.52057 Jul. 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. AV-28BT8ENS / AV-28BT8ENB AV-28BT80EN / AV-28BT8EPS AV-28BT8EPB / AV-28BT80EP AV-28BT8EES / AV-28BT8EEB AV-28BS88EN AV-28BT8ENS / AV-28BT8ENB / AV-28BT80EN AV-28BT8EPS / AV-28BT8EPB / AV-28BT80EP AV-28BT8EES / AV-28BT8EEB / AV-28BS88EN NOTE ON USING CIRCUIT DIAGRAMS SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS PATTERN DIAGRAMS 2-1 2-2 2-3 2-5 2-21 CD-ROM No.SML200207 CONTENTS RM-C1100 TV

• JVC AV-28BT8ENS, No.52057 No.52057 3 AV-28BT8ENS / AV-28BT8ENB / AV-28BT80EN AV-28BT8EPS / AV-28BT8EPB / AV-28BT80EP AV-28BT8EES / AV-28BT8EEB / AV-28BS88EN AV-28BT8ENS / AV-28BT8ENB / AV-28BT80EN AV-28BT8EPS / AV-28BT8EPB / AV-28BT80EP AV-28BT8EES / AV-28BT8EEB / AV-28BS88EN 2-3 2-4 BLOCK DIAGRAM CRT PLL/VST TUNER UV1315/16 VIDEO PROCESSOR STV2248C +150 B+ CONTROLLER ST92195 I 2 C SERVICE CONNECTOR EEPROM KEYPAD IR SENSOR STEREO SOUND MSP34X0D/G VIRTUAL DOLBY QSS HP AMP TDA1308 AUDIO AMP TDA7269A L R SM P S MC446 08 +14V -14V +8V +5V VIDEO SWITCHING CIRCUITS IF SCART1 SC ART2 SVHS FAV/BAV HOR D RIVE BU2508 VER

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 12 BASIC OPERATION SERVICE MENU ■ ■■ ■ HOW TO ENT ER THE SERVICE MENU 1) Press the MENU key. 2) ME NU sc reen of fig.1 will b e d ispla ye d 3) While the ME NU scree n is disp layed , p r ess th e 4,7 ,2, 5 ke y or INFORMATION key and MUT ING key simultaneously. 4) The SERVICE MENU screen of (Fig.2) will be displayed. ■ SEL ECTION OF ADJUSTMENT ITEMS 1) En ter th e SERV

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN 30 CRT SOCKET P.W. BOARD ASS’Y (VE-20094670) ! Symbol No. Part No. Part Name Description RESISTOR R900 30000788 CF RES. 1/4W 6.8M J R902 30000459 CF RES. 1/4W 100R J R903 30000459 CF RES. 1/4W 100R J R904 30000459 CF RES. 1/4W 100R J R906 30000535 CF RES. 1/2W 150K J R907 30000477 CF RES. 1/4W 100K J R908 30000477 CF RES. 1/4W 100K J R909 30000525 CF RES. 1/2W 1.5K J R910 30000525 CF RES. 1/2W 1.5K J R911 30000525 CF RES. 1/2W 1.5K J R912 30000477 CF RES. 1/4W 100K J R913 30000525 CF RES. 1/2W 1.5K J R914 30001084 MO RES. 1W 1K J R

• JVC AV-28BT8ENS, No.52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 6 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING T HE REAR COVER 1. Unp lu g t he po wer c ord. 2. Remove the 8 screws marked A as shown in t he Fig. 1. 3. Remove the 4 screws marked B around the AV TERMINAL BOA RD. 4. Withdraw t he rear co ver to wa rd you . REMOVING T HE AV TERMINAL BOARD " Removing the rear cover. 1. Remove th e 2 scr ews m arke d C f asten ed th e AV TE RMINAL BOA RD. 2. Remove the AV TERMI NAL BOARD. REMOVING T HE MAIN PWB " Removing the rear cover. " Removing the AV TERMI

• JVC AV-28BT8ENS, No.52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 4 SAFETY PRECAUTIONS 1. The d esign of th is pr oduct con ta ins sp ecial har d wa re , many circuit s and components specially for safety purposes. For con tinu ed prot ection , n o chan g es sh ou ld b e ma de to the o rig inal d esign un less a uth orized in writin g by th e manu fact urer . Rep lacem ent p arts m ust b e id ent ic al to thos e u sed in th e origin al circu it s. Se rvic e sh ou ld be pe rf orme d b y q ua lifie d perso nn el on ly. 2. Alte ration s of t he desig n or circuitry of t he prod ucts sh ould not

• JVC AV-28BT8ENS, No. 52057 A V-28BT8ENS / AV-28BT8ENB / AV-28BT80EN A V-28BT8EPS / AV-28BT8EPB / AV-28BT80EP A V-28BT8EES / AV-28BT8EEB/ AV-28BS88EN 18 ■ ■■ ■ GEOMETRY MENU ADJUSTMENT (Adjust 4:3MODE / 16:9MODE respectively) Item Measurin g instruments Test point Ad justment part Description VERTICAL SIZ E adjustme nt (50Hz) Signal generator Remote control unit VS IZ 1. Receive a PA L B/G cross- h atch p att ern of vertica l f requ enc y 50Hz. 2. Enter SE RVICE MENU. 3. Press the GREEN t hen enter the GEOME TRY MENU. 4. Select VSIZ (Vertic al size) with the FUNCTION ( / ) key. 5. Adjust VSIZ with

• JVC AV-28BT8ENS, No. 52057 A V-28BT8EES / AV-28BT8EE B 37 ! Symbol No. Part No. Part Name Description CAPACITOR C542 VE-30000107 MKT CAP. 47NF 250V J C543 VE-30000431 CER CAP. 100PF 1KV M C544 VE-30000345 EL CAP. 10UF 50V M C547 VE-30000345 EL CAP. 10UF 50V M C565 VE-30016654 SMD CAP. 100NF 16V K R C566 VE-30016654 SMD CAP. 100NF 16V K R C567 VE-30000431 CER CAP. 100PF 1KV M C602 VE-30017319 MKT CAP. 120NF 63V J C604 VE-30000356 EL CAP. 100UF 63V M C605 VE-30000360 EL CAP. 1000UF 25V M C607 VE-30012581

More Instructions:

	JVC AV-28BT8ENS Instructions manual 02-11-2023 15	DOWNLOAD
	JVC AV-28BT8ENS Instructions manual 15-10-2023 14	DOWNLOAD

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