Zenith H19F34DT Series, Service Manual

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TABLE OF CONTENTS
SECTION 1......GENERAL INFO
PRODUCT SAFETY SERVICING GUIDELINES i~ii
INTRODUCTION ........................ 1-1
OVERVIEW ........................ 1-1
INTERFACES .......................... 1-2
SUPERPORT - MPI ................. 1-2
MULTIPLE PROTOCOL INTERFACE ...... 1-2
EBC (EDGE BOARD CARD) ............ 1-2
CONNECTION CENTER ON BACK OF TV
.. 1-2
REMOTE CONTROL ...................... 1-4
LT-2000/02 CLONE PROGRAMMER ......... 1-5
QUICKSET II PROGRAMMER ........... 1-5
LEARN FROM TV ................... 1-5
WRITE TO TV ..................... 1-5
SET CLONE CLOCK FROM TV .......... 1-6
SET TV CLOCK FROM CLONE .......... 1-6
DISPLAY TV SETUP ................ 1-6
DISPLAY CLONE SETUP .............. 1-6
OPERATION NOTES ................. 1-6
USER MENUS .......................... 1-7
SETUP MENU ...................... 1-7
AUTOPROGRAM....................... 1-7
ADD/DEL/BLNK .................... 1-7
CHANNEL LABELS ................. 1-7
CLOCK SET ....................... 1-8
TIMER ........................... 1-8
CAPTIONS ........................ 1-8
LANGUAGE ........................ 1-8
AUDIO MENU ...................... 1-9
VIDEO MENU ...................... 1-9
PARENTAL CONTROL ............... 1-10
ON-SCREEN DISPLAYS ............. 1-11
CHANNEL/TIME/AUDIO DISPLAY ...... 1-11
CH PREVIEW MENU ................ 1-11
CAPTIONS DISPLAY ............... 1-12
SOURCE MENU .................... 1-12
SECTION 2.......FACTORY &
INSTALLERS MENU
ACCESING INSTALLERS MENU ............. 2-1
INSTALLERS MENU ADJUSTMENTS ...... 2-1
ADJUSTMENT CHART ................. 2-6
ACCESING FACTORY MENU (34-36 SERIES) 2-8
FACTORY MENU OPTIONS ............. 2-8
ACCESING FACTORY MENU (39 SERIES) .. 2-11
FACTORY MENU OPTIONS ............ 2-11
SECTION 3.........SERVICING
SERVICING ........................... 3-1
GENERAL INFORMATION .............. 3-1
MODULE-LEVEL SERVICING ........... 3-1
SERVICING THE POWER SUPPLY ....... 3-1
IF SERVICING .................... 3-4
AGC DELAY ....................... 3-4
G2 ADJUSTMENT......................3-4
FOCUS ADJUSTMENT ................ 3-4
ADJUSTMENT OF RGB CUTOFF ......... 3-4
SWITCHING PROCESS..................3-5
SENSING AND PRIORITIES.............3-5
PRELIMINARY SETUP ............... 3-6
PURITY ADJUSTMENT ............... 3-6
CONVERGENCE ADJUSTMENT ........... 3-6
VERTICAL-TILT WEDGE ADJUSTMENT.....3-7
HORIZONTAL-TILT WEDGE ADJUSTMENT . 3-7
UNUSUAL TILT CASE ............... 3-7
IMPROVING CRT CORNER PURITY........3-7
MODIFICATION.......................3-7
SECTION 4.......MODEL PARTS
H19F34DT ........................ 4-1
H20F34DT ........................ 4-1
H25F34DT ........................ 4-1
H25F39DT ........................ 4-1
H27F34DT
........................ 4-2
H27F39DT...........................4-2
H25F36DT ........................ 4-2
H27F36DT
........................ 4-2
H27F36S ......................... 4-2
H32F36DT...........................4-2
H24F
/34DT/ 36DT /39DT ................4-3
SECTION 5..........DIAGRAMS
H19F34DT EXPLODED VIEW ........... 5-1
H20F34DT EXPLODED VIEW ........... 5-2
H24F
34DT/ 36DT /39DT EXPLODED VIEW .. 5-3
H25F34DT/36DT/39DT EXPLODED VIEW . 5-4
H27F34DT/36DT/36S/39DT EXPLODED ...
5-5
H32F36DT EXPLODED VIEW.............5-6
SECTION 6........SCHEMATICS
POWER SUPPLY .................... 6-1
MAIN MICRO CIRCUIT .............. 6-2
DEFLECTION CIRCUIT .............. 6-3
VIDEO PROCESSOR CIRCUIT .......... 6-4
AUDIO PROCESSOR ................. 6-5
A/V SWITCH ...................... 6-6
MPI CARD CIRCUIT ................ 6-7
VIDEO OUTPUT .................... 6-8
EDGE CARD CIRCUIT ............... 6-9
AUDIO AMPLIFIER ................ 6-10
COMB FILTER .................... 6-11
BLOCK DIAGRAM .................. 6-12
PCB TOP LAYOUT ................. 6-13
PCB BOTTOM LAYOUT .............. 6-14
PCB TOP LAYOUT ................. 6-15
PCB BOTTOM LAYOUT .............. 6-16
TOC - 1
FCS-48SERIES -TOC