Zenith H27F39DT Servisní příručka

SERVICE MANUALSERVICE MANUALSERVICE MANUALProduct Type: ChassisManual Series: Manual Part #: Model Line: Product Year: Model Series:CONTENTSGener

SR25-3828VD0171B 1-6 CL - OVERVIEWLT-2000 & 2002 CLONE PROGRAMMERUsing the on-screen menu, select a memory or returnto the main selection menu. Th

SR25-3828VD0171B 1-7 CL - MENUSUSER MENUSSETUP MENUPress the MENU key on the Installer’s remote repeatedlyso that the SETUP MENU appears on the screen

SR25-3828VD0171B 1-8 CL - MENUSUSER MENUS (continued)CLOCK SETPress MENU repeatedly to show the Setup menu. Use theUp/Down Arrows to highlight Clock S

SR25-3828VD0171B 1-9 CL - MENUSUSER MENUS (continued)In the Language menu, use the Right/Left arrow tochoose one of the following options: English, Sp

SR25-3828VD0171B 1-10 CL - MENUSUSER MENUS (continued)Press ENTER to return to TV viewing, or press the Up /Down Arrows to change other options in the

SR25-3828VD0171B 1-11 CL - MENUSUSER MENUS (continued)TV PARENTAL GUIDELINE RATING SYSTEMG General Audiences Content not offensive to most viewers.TV-

SR25-3828VD0171B 1-12 CL - MENUSUSER MENUS (continued)CAPTIONS DISPLAYPressing CC in Quick Mode shows the current Captionselection, or Caption Off:1CA

SR25-3828VD0171B 2-1 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENUSECTION 2INSTALLERS MENU ADJUSTMENTSNote: There are two microcontrollers

SR25-3828VD0171B 2-2 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENU (continued)4-I STRT CHANNEL: Determines the channel that is se-lected a

SR25-3828VD0171B 2-3 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENU (continued)20-I FEATURE LEVEL: Default set to ZEN 1 for Zenith IRremote

IMPORTANT SAFETY NOTICEThis Manual was prepared for use only by properly trained audio-visual servicetechnicians.When servicing this product, under n

SR25-3828VD0171B 2-4 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENU (continued)45-I NOT USED46-I STRT AUX SRCE: Determines the Aux that is

SR25-3828VD0171B 2-5 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENU (continued)74-I CH-TIME SIZE: When set to 1 and transparent back-ground

SR25-3828VD0171B 2-6 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENU (continued)ITEM VALUE RANGE DEFAULT VALDESCRIPTION0-I. INSTALLER SEQ 0-

SR25-3828VD0171B 2-7 CL - INSTALLERS MENUMODEL SERIES 34/36/39 INSTALLERS MENU (continued)ITEM VALUE RANGE DEFAULT VALDESCRIPTION51-I. DIS. V-CHIP M.

SR25-3828VD0171B 2-8 CL - INSTALLERS MENUCL MODEL SERIES 34 & 36 FACTORY MENUSECTION 2FACTORY MENU DESCRIPTION FOR SERIES 34 & 360-F FACT MENU

SR25-3828VD0171B 2-9 CL - INSTALLERS MENUCL MODEL SERIES 34 & 36 FACTORY MENU24-F MAX CONTRAST: See adjustment range of customercontrol for contra

SR25-3828VD0171B 2-10 CL - INSTALLERS MENUCL MODEL SERIES 34 & 36 FACTORY MENUITEMRANGEH25F36DTH27F36DTH32F36DTH19F34DTH20F34DTH25F34DTH27F34DTDES

SR25-3828VD0171B 2-11 CL - FACTORY MENUCL MODEL SERIES 39 FACTORY MENUFACTORY

SR25-3828VD0171B 2-12 CL - FACTORY MENUCL MODEL SERIES 39 FACTORY MENU21-F Y DL TIME AUX: Luma signal delay time adjustmenton Aux Mode. Range is 0-6.

SR25-3828VD0171B 2-13 CL - FACTORY MENUCL MODEL SERIES 39 FACTORY MENUITEM RA

X-RadiationTo prevent possible exposure to x-radiation caused by excessive CRTanode voltage, the CL chassis incorporate a “High Voltage Shut-down” cir

SR25-3828VD0171B 3-1 CL - SERVICINGSERVICINGGENERAL INFORMATIONServicing the CL chassis is the same as with other Zenithsingle-board chassis. If the s

SR25-3828VD0171B 3-2 CL - SERVICINGSERVICE ADJUSTMENTS (continued)MICROPROCESSORCheck the following:IR in on pin 15+5 volts on pins 27 and 18Serial Da

SR25-3828VD0171B 3-3 CL - SERVICINGcomponents. After replacement is made, confirm properanode voltage using the following procedure.Measurement of the

SR25-3828VD0171B 3-4 CL - SERVICINGIF SERVICINGVIDEO DETECTORIf there is no viewable picture on screen, access theService Menu and check default setti

SR25-3828VD0171B 3-5 CL - SERVICINGSERVICE ADJUSTMENTS (continued)SWITCHING PROCESSVideo switching is done between the CV inputs and theY/C inputs. Th

SR25-3828VD0171B 3-6 CL - SERVICINGPRELIMINARY SETUP1. Allow the receiver to warm up for 15 to 20 minutes.2. Degauss the CRT.3. Connect a crosshatch g

SR25-3828VD0171B 3-7 CL - SERVICINGVERTICAL-TILT WEDGE ADJUSTMENTThe vertical lines at 6 and 12 o’clock are converged byvertically tilting the yoke an

MODEL PARTSSR25-3828VD0171B 4-1 CL - MODEL PARTSPARTSAll CL models are module level repair only. Parts contact informa-tion is below:Voice:

MODEL PARTSSR25-3828VD0171B 4-2 CL - MODEL PARTSItem number Part description Item number Part description4810V00739A Cabinet Tray 4810V0

MODEL PARTSSR25-3828VD0171B 4-3 CL - MODEL PARTSItem number Part description4810V00739A Bracket, Jack Pack 3091V00B80A Cabinet Front 3809V0

TABLE OF CONTENTSSECTION 1...GENERAL INFOPRODUCT SAFETY SERVICING GUIDELINES i~iiINTRODUCTION ... 1-1OVERVIEW ...

REF DESCRIPTION H19F34DT1FRONT CABINET (CABINET ASSEMBLY)3091V00B81B2SPEAKER (SPEAKER FULL RANGE)6400VSNX01A3KEYBOARD ASSEMBLY3141VSNC61A4IR LENS3790V

iacpotnovlov lchchwerpoCH PREVIEWTIMERALARMTEMUBHSFL KPOWERV LUMO ELNNECHACC098765432ENTER1REF DESCRIPTION H20F34DT1FRONT CABINET (CABINET ASSEMBLY)30

34215678CH P RE V IE WTIM ERALA RMTEMULHFSBKRPOWEVOLMUELCHANENCC098765432EN TE R18Cl Commercial 24”Exploded View5-3 CL EXPLODED VIEWSR25 - 3828VD01

34215678CH PREVIEWTIMERALARMTEMULHFSBKRPOWEVOLMUELCHANENCC098765432ENTER1Cl Commercial 25”Exploded View5-4 CL EXPLODED VIEW8REF DESCRIPTION H25F34DT H

7342165CH PREVIEWTIMERALARMTU EMHFLSBKOEPWRVOLEUMHALC NNECC098765432ENTER1Cl Commercial 27”Exploded View5-5 CL EXPLODED VIEW8SR25 - 3828VD0171BREF D

12345678CH PREVIEWTIMERALARMMEUTHFSKLBORPWEVMOLUEELCHANNCC098765432ENTER1Cl Commercial 32”Exploded View5-6 CL EXPLODED VIEWREF DESCRIPTION H32F36DT1FR

DEG-CTRLPWR-CTRL+11LSP+11LSP+VM+12VSB+12VSB+12VSB+12VSB+12HDR+12HDR+VM+VM+12VSB+VLSW+8V+14VSB+14VSB+VL+12VSB+VL+VL+13VAUDAUD+13V+14VAUDAUD+14VVSB+14VS

IR-DATAMUTECTRL-Y/CV-SYNCSDAY-MICROSYNCH-SYNCAFCCAMPORT-SENSESCLHORZ-SIZEY/C-SENSEDEG-CTRLPWR-CTRLBRFASTBLANKIFSHUTDOWNCTRL-TV/AUXCTRL-F/RGIR-DATAAGCC

WF4WF3WF6WF5WF8WF7HORZ-DRIVESHUTDOWNABLHORZ-SIZEVERTICAL-ABLVNFBFLYBACKVERT-DRIVE+5VSBF+35V+35V+35V+12HDR+33V+33V+28VB++35V+35V+12HDR+215V+215V+5VSBF+

WF11WF10WF9WF12WF13WF15H-SYNCV-SYNCFSCFSCSIFSIF((((((((GGRRBBY-MICROVERTICAL-ABLABLAFCVERT-DRIVEVNFBFLYBACKHORZ-DRIVESYNCH-SYNCV-SYNCBGRFASTBLANKSDASC

SR25-3828VD0171B 1-1 CL - OVERVIEWOVERVIEW1SHIELDFX3400INTRODUCTIONThis manual covers the CL Chassis Commercial Sets. All suffix 36 models have stereo

SDASCLAUDIO-AMP-RIGHTAUDIO-AMP-LEFTSW+9V+8.1VAUD+8.1VAUDAUD+8.1VAUD+8.1VAUD+8.1VSW+9V+5VTNR+5VTNRC142050V3.3µFL140015µHC280716V100µFC280050V1µFC280150

SR25-3828VD0171BY/C-SENSECAMPORT-SENSETVAUX-LEFT-Y/CAUX-RIGHT-VIDAUX-LEFT-VIDC-MAINY-MAINCTRL-Y/CCTRL-TV/AUXCTRL-F/RAUX-RIGHT-Y/CMATRIX/SPEAKER-OUTCV-

PROV561234EBCEBC1110985671234EBC1110985671234EBCMPI_DATA_INIR_DATAMPI_DATA_OUTCLONESENSE_PTY_SELECTRJ11_PIN4GNDGNDBUFFER_IR_DATAMPI_DATA_IN_BUFFERED+1

EBCEBCEBC985671234EBC1211109876541G239876541G20-0.403.694.0126.73.654.0128.5128.24.03.6AMPREDAMPGREENAMPBLUEWIRE TO SWEEPREDREDFILAMENTOSFILAMENTOSBLU

89106751234111098756123489106751234111098756123411109875612341110987561234MPI_DATA_INMPI_DATA_IN+5VBA+5VBA+5VBAPS_GNDPS_GNDMPI_DOUTY/C_GNDC-INBUFFERED

AUDIO-AMP-RIGHTAUDIO-AMP-LEFTMATRIX/SPEAKER-OUTMUTECOMP-AUDGNDGNDGNDGNDGNDGNDGNDAUD+14VGNDGNDGNDGND GNDAUD+13VGND GNDGNDQ800EBCKSC945C-Y0TR945009AA123

CV-COMBLUMA-COMBCHROMA-COMBFSCSW+8VSW+8VSW+8VSW+9V+5VCMB+5VCMBCMB+5VCMB+5VCM2400PROV50VL2401100µHL2403100µHL240510µHW2450P/LQ2400EBC0TR945009AAKSC945C

AFTOUTSAWVIFINIF IN636424546RF AGCOUTDELAY ADJRF AGC59IF AGCVIFAMPVCOVIDEODETAPCDETVIF VCO ADJDEFEATAFT OUTAFTGAMMABLACK STRETCHGAMMABLACKSTRETCHCLAMP

_A_V_A_V_A_V_A_VCN4R8THX3901CX3405CN4T8G56G57G54G55BRX3400A+~~-BRX3400+~ ~-CX3404THX39021DX3600G44G43G42W1KX3900RX3500QX3500EBCG10C3204TU1240FB3601FB3

PCB Bottom LayoutCN4R81THX3901CX3405CN4T81BRX3400A+-~~BRX3400+-~~CX34041THX3902DX3600»W1KX3900RX3500QX3500EBCC32041TU1240FB3601FB3601AFB3600AFB3600W26

SR25-3828VD0171B 1-2 CL - OVERVIEWOVERVIEW (continued)INTERFACESCAMPORTSome models have video and right/left audio input jacksat the front of the rece

1 11CB ECB EBCEBCEBCE11VGA101CB E111BCE1EDGE TARGETCRT1R5129W0165CRT2W0160W0166C4965C4966C4967C49466E211E1MPIR4997R4993R4992R4990R4991R4996C5107R4987C

R4989MR4986MR4995MR4985MR4994MC5105MC5118MC5103MC5106MC5109MC5102MR5124MR5118MR5109MR5106MR5113MR5121MR5105MR5112MR5120MR5108MR5117MR5102MR5101MPCB Bo

zenith

SR25-3828VD0171B 1-3 CL - OVERVIEWOVERVIEW (continued)CONNECTION CENTER ON BACK OF TVThe connection center on the rear of the TV allows forconnection

SR25-3828VD0171B 1-4 CL - OVERVIEWREMOTE CONTROLMUTEPress to turn off sound whilepicture remains. Press againto restore sound.FLSHBKPress to return to

SR25-3828VD0171B 1-5 CL - OVERVIEWLT2000 & LT2002 CLONE PROGRAMMERNOTE: A slowly flashing green light indicates there isa problem with the communi