Zenith H2539Y Service Manual

SERVICE MANUALProduct Type: Commercial Color TVChassis: CHManual Series: SR21AManual Part #: 923-03391R1Model Line: BProduct Year: 1999General Info/Re

SR21A 1-4 CH - MAINPILLOW SPEAKER INTERFACEDescriptionThe pillow speaker interface within the TV, provides three remote control lines and anaudio outp

SR21A 1-5 CH - MAINSettings Min/Max Volume LevelsUse the following procedure to adjust minimum volume and maximum volume for pillow speaker. This proc

SR21A 1-6 CH - REMOTESUSER REMOTE - MBR3447ZTo use the TV functions defined below, make sure that the remote is set to operate TV.Press TV on the remo

SR21A 1-7 CH - REMOTESPATIENT REMOTE - SC637ZHEALTHVIEW SERIESThis remote control is intended for use by patients, guests and others. It provides acce

SR21A 1-8 CH - REMOTESGUEST REMOTE - SC652ZCONCIERGE SERIES This remote control is intended for use by guests and others. It provides access only

SR21A 1-9 CH - REMOTESGUEST REMOTE - SC692ZCONCIERGE SERIES This remote control is intended for use by guests and others. It provides access to

SR21A 1-10 CH - REMOTESINSTALLER REMOTE - HP602ZOPERATIONThis remote control is available as an optional item forthe equipment installer. It provides

SR21A 1-11 CH - REMOTESQUICKSET II PROGRAMMERThe QuickSet II programmer (LT1500) allows customsetup and programming information to be quickly copiedfr

SR21A 1-12 CH - REMOTESTEACH TO TVSelect “TEACH TO TV”, and then press ON/OFF, POWER,or ENTER to begin teaching process.Alternatively, use the TV fro

SR21A 1-13 CH - MENUSINSTALLATION SETUPInstaller’s Remote and Clone ProgrammerTo perform the installation setup for several TVs, youneed an installer’

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTSiIMPORTANT SAFETY NOTICEThis manual was prepared for use only by properly trained audio-vi

SR21A 1-14 CH - MENUSTIMER SETUPPress MENU to show the SETUP MENU. Use SELECT tohighlight TIMER SETUP.With TIMER SETUP highlighted, use the RIGHT/LEF

SR21A 1-15 CH - MENUS• FRONT SURR: can be set ‘On’ or ‘Off’, regardless ofthe current Audio Mode setting. However, the FrontSurround effect can only b

SR21A 1-16 CH - MENUSOVERVIEWTo ensure complete coverage for all TV programs (moviesand regular TV shows), choose ratings from the MotionPicture Assoc

SR21A 1-17 CH - MENUS• You cannot disable PARENTAL CONTROL by disconnectingthe TV from power. Block hours will automatically resetto the original bloc

SR21A 1-18 CH - MENUSIn the Auto Program screen:• A message at the top displays “Auto Program” to letthe customer know that they have entered the Auto

SR21A 1-19 CH - MENUSAUDIO MENU FOR RADIOUse to adjust the sound options to your preferences.The display shows either Mono, Stereo or Muted.Mono sets

SR21A 2-1 CH-INSTALLERS MENUINSTALLERS MENU ADJUSTMENTSTo access the Installer’s Menu, press and hold the MENUkey until the User Menu display disappea

SR21A 2-2 CH-INSTALLERS MENU10 STRT CH/VOL: Determines the channel that is selectedautomatically each time the TV is turned on and setsthe audio volum

SR21A 2-3 CH-INSTALLERS MENUINSTALLERS MENU 221-01390 (continued)33 60HZ SW: A sync stability item. Range is 0-1.Zero is off. Set to 0.34 PIF VCO: R

X-RADIATIONTo prevent possible exposure to x-radiation caused by excessiveCRT Anode Voltage, the CH Chassis incorporates a “High VoltageShutdown” circ

SR21A 2-4 CH-INSTALLERS MENUINSTALLER’S MENU 221-01390 (continued)ITEM RANGE H1934Y H2034Y H2035DT H2050DT H2534Y DESCRIPTION00 FACT MENU 0-1 0 0 0 0

SR21A 2-5 CH-INSTALLERS MENUINSTALLER’S MENU 221-01390 (continued)ITEM RANGE H2539Y H2535DT H2735DT H3235DT H3635DT DESCRIPTION00 FACT MENU 0-1 0 0 0

SR21A 3-1 CH - SERVICINGSERVICINGGENERAL INFORMATIONServicing the CH chassis is the same as with other Zenithsingle-board chassis. If the set is dead,

SR21A 3-2 CH - SERVICINGMICROPROCESSORCheck the following:IR in on pin 15.+ 5 volts on pin 27 and 18.Serial Data, Serial Clock on pins 36 and 38Reset

SR21A 3-3 CH - SERVICINGSERVICE ADJUSTMENTSG2 ADJUSTMENTUse the following procedure when resetting G2.1. Set brightness and contrast in Video Menu to

SR21A 3-4 CH - SERVICINGSERVICE ADJUSTMENTSPRELIMINARY SETUP1. Allow the receiver to warm up for 15 to 20 minutes.2. Degauss the CRT.3. Connect a cros

SR21A 3-5 CH - SERVICINGSERVICE ADJUSTMENTS (continued)VERTICAL-TILT WEDGE ADJUSTMENTThe vertical lines at 6 and 12 o’clock are converged byvertically

- 3-6 -

SR21A 4-1 CH - MODEL PARTSMODEL PARTSSECTION 4MODEL PARTSH1934Y, H1934Y3, H1934Y33, H1934Y4, H1934Y6012-10896-01 MOLDED PLASTIC BRACKET, SUPERPORT012-

- iii -

SR21A 4-2 CH - MODEL PARTSMODEL PARTS049-01368-03 SPEAKER, OVAL, 6 X 13 CM050-01989-01 CONNECTOR & CBL, ASSY, 2.5MM, 2 CONTACT, 1 UP050-02791 CONN

SR21A 4-3 CH - MODEL PARTSMODEL PARTS192-00916 LENS, IR206-03489 INSTR BOOK, OPERATION GUIDEA-18378 CRT ASSEMBLY, W/DEFLECTION YOKE AND BEAMBENDERA-18

SR21A 4-4 CH - MODEL PARTSMODEL PARTS049-01368-03 SPEAKER, OVAL, 6 X 13 CM050-02576 CONNECTOR & CBL, ASSY, 2.5MM, 4 CONTACT, 1 UP050-02791 CONNECT

SR21A 4-5 CH - H1 COMPONENT PARTSH1 COMPONENT PARTS LIST REFERENCE CHARTThe following information is for models in andout of warranty. For any models

H1 COMPONENT PARTS LISTSR21A 4-6 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare sh

H1 COMPONENT PARTS LISTSR21A 4-7 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare sh

H1 COMPONENT PARTS LISTSR21A 4-8 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare sh

H1 COMPONENT PARTS LISTSR21A 4-9 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare sh

H1 COMPONENT PARTS LISTSR21A 4-10 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H1 COMPONENT PARTS LISTSR21A 4-11 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

TABLE OF CONTENTSSECTION 1 GENERAL INFOINTRODUCTION ... 1-1CONNECTIONS ...

H1 COMPONENT PARTS LISTSR21A 4-12 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H1 COMPONENT PARTS LISTSR21A 4-13 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H1 COMPONENT PARTS LISTSR21A 4-14 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H1 COMPONENT PARTS LISTSR21A 4-15 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H1 COMPONENT PARTS LISTSR21A 4-16 CH - H1 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

SR21A 4-17 CH - H2 COMPONENT PARTSH2 COMPONENT PARTS LIST REFERENCE CHARTThe following information is for models in andout of warranty. For any models

H2 COMPONENT PARTS LISTSR21A 4-18 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H2 COMPONENT PARTS LISTSR21A 4-19 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H2 COMPONENT PARTS LISTSR21A 4-20 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H2 COMPONENT PARTS LISTSR21A 4-21 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

- TOC-2 -

H2 COMPONENT PARTS LISTSR21A 4-22 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H2 COMPONENT PARTS LISTSR21A 4-23 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H2 COMPONENT PARTS LISTSR21A 4-24 CH - H2 COMPONENTSCritical safety components are identified by theletter “X” in their component designators andare s

H2034Y/H2035DT/H2534Y/H2535DT/H2539Y20/25V Table Top Set Exploded ViewREF DESCRIPTION H2034Y H2035DT H2534Y H2535DT H2539Y1 FRONT CABINET 014-12056-56

H2735DT27V Table Top Set Exploded ViewREF DESCRIPTION H2735DT1 FRONT CABINET 014-123362 SPEAKER 049-01368-033 KEYBOARD ASSEMBLY F-536464 IR LENS 192-0

H3635DT36V Table Top Set Exploded ViewSC652124-00213-02ALARMCCzenithConciergebyREF DESCRIPTION H3235DT H3635DT1 FRONT CABINET 014-12284-22 014-12269-1

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

SR21A 1-1 CH - MAININTRODUCTIONThe CH series chassis will be used on the “B” lineCommercial Products. This covers the 19, 20, 25, 27,32, and 36 inch s

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

SR21A 1-2 CH - MAINCAMPORTSome models have video and right/left audio input jacksat the front of the receiver. These jacks can be used toview video ta

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIRCOMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.ALL SYMBOLS WITH

SR21A 1-3 CH - MAINCONNECTION CENTER ON BACK OF TVThe connection center on the rear of the TV allows forconnection of the viewing source. The diagrams