Table Of Contents - Zenith R50V26 Service Manual

SECTION 1 .................... OVERVIEW
OVERVIEW ..................................................... 1-1
ON SCREEN DISPLAY ..................................... 1-3
REMOTE BUTTON DESCRIPTIONS ..................... 1-5
PROGRAMMING THE REMOTE .......................... 1-5
REMOTE BRAND CODES .................................. 1-6
REMOTE CODES ............................................ 1-7
OPERATING MODE KEY FUNCTIONS ................... 1-8
USER MENUS .................................................. 1-9
USER MENUS ............................................ 1-10
SETUP ..................................................... 1-10
SPECIAL .................................................. 1-11
VIDEO MENU ............................................. 1-15
AUDIO MENU ............................................ 1-16
THEATER MENU ......................................... 1-17
POP-3 ..................................................... 1-17
SPLIT SCREEN ........................................... 1-17
SECTION 2 .............. SERVICE MENU
<PENDING>
SECTION 3 ....................SERVICING
CIRCUIT DESCRIPTIONS .................................... 3-1
POWER ON AND OFF ..................................... 3-1
POWER SUPPLY SHUTDOWN ........................... 3-1
STAND-BY MODE .......................................... 3-1
HOT SHUT DOWN SENSING CIRCUITS ................ 3-1
COLD SHUT DOWN SENSING CIRCUITS .............. 3-1
POWER SUPPLY SHUTDOWN CIRCUIT ................ 3-2
SHUTDOWN DETECTION CIRCUITS .................... 3-2
DEFLECTION SHUT DOWN CIRCUITS ................. 3-2
SHUT DOWN CIRCUIT DESCRIPTIONS ................ 3-3
SUB POWER SUPPLY VISUAL LED .................... 3-5
VOLTAGE LOSS OR EXCESSIVE LOAD DETECTION .. 3-5
B+ VOLTAGE TOO HIGH ................................. 3-5
SHUT DOWN CIRCUIT .................................... 3-5
B+ GENERATION FOR SUB POWER SUPPLY ......... 3-6
DEFLECTION POWER SUPPLY VISUAL LEDS ........ 3-6
DEFLECTION POWER DRIVER B+ GENERATION ..... 3-6
DEFELCTION GENERAL INFORMATION ................ 3-7
MAIN MICROPROCESSOR .............................. 3-12
DAC1 I006 ............................................... 3-13
DAC3 I007 ............................................... 3-13
LEVEL SHIFT I004 ..................................... 3-13
3D Y/C I301 ............................................. 3-13
MAIN VIDEO CHROMA I501 (PREPARATION IC) 3-14
RAINFOREST IC01 (VIDEO/CHROMA PROCESSOR)3-14
A/V SELECTOR IX01 ................................... 3-14
SUB VIDEO CHROMA IX03 ........................... 3-14
MAIN Y PR/PB SELECTOR IX04 ..................... 3-14
SUB Y PR/PB SELECTOR IX04 ....................... 3-14
FRONT AUDIO CONTROL IC IA01 ................... 3-14
SRS AUDIO ............................................... 3-15
PV154 - 923-03506

TABLE OF CONTENTS

SERVICE ADJUSTMENTS .................................. 3-16
ZP-25 CHASSIS ADJUSTMENT ORDER ............. 3-16
CHASSIS PRE-HEAT RUN ADJUSTMENTS .......... 3-17
CHASSIS CUT-OFF (SCREENS) ADJUSTMENT ..... 3-17
CHASSIS PRE-FOCUS ADJUSTMENT ................ 3-17
DCU CROSSHATCH PHASE ADJUSTMENT .......... 3-17
CHASSIS HORIZONTAL PHASE ....................... 3-17
CHASSIS TILT (RASTER INCLINATION) ............ 3-18
CHASSIS BEAM ALIGNMENT ADJUSTMENT ....... 3-18
CHASSIS RED/BLUE RASTER OFFSET .............. 3-18
VERTICAL SIZE ADJUSTMENT ....................... 3-19
HORIZONTAL SIZE ADJUSTMENT .................... 3-19
BEAM FORM ADJUSTMENT ........................... 3-19
LENS FOCUS ADJUSTMENT ........................... 3-20
STATIC FOCUS ADJUSTMENT ......................... 3-20
BLUE DE-FOCUS ADJUSTMENT ...................... 3-20
WHITE BALANCE AND SUB BRIGHTNESS .......... 3-20
CHASSIS HORIZONTAL PHASE (FINE) ............. 3-21
CHASSIS INTELLISENSE "PATTERN SET UP" ...... 3-21
DIGITAL CONVERGENCE ALIGNMENT ............... 3-22
SUB PICTURE AMPLITUDE ........................... 3-22
SECTION 4 ........................... PARTS
MODEL PARTS ............................................. 4-1
SECTION 5 .................... DIAGRAMS
ZP26/28 EXPLODED VIEW ................................. 5-1
50" WIRING DIAGRAM - BACK ........................... 5-2
60" WIRING DIAGRAM - BACK ........................... 5-3
50/60" WIRING DIAGRAM - FRONT ..................... 5-4
56" WIRING DIAGRAM - BACK ........................... 5-5
65" WIRING DIAGRAM - BACK ........................... 5-6
56/65" WIRING DIAGRAM - FRONT ..................... 5-7
ZP26/28 SRS PWB .......................................... 5-8
SECTION 6 .................. SCHEMATICS
CONVERGENCE CIRCUIT 1/2 ............................... 6-1
CONVERGENCE CIRCUIT 2/2 ............................... 6-2
MAGIC FOCUS CIRCUIT ..................................... 6-3
DEFLECTION POWER SUPPLY CIRCUIT .................. 6-4
DEFLECTION CIRCUIT ....................................... 6-5
POWER SUPPLY CIRCUIT ................................... 6-6
SIGNAL CIRCUIT 1/4 ....................................... 6-7
SIGNAL CIRCUIT 2/4 ....................................... 6-8
SIGNAL CIRCUIT 3/4 ....................................... 6-9
SIGNAL CIRCUIT 4/4 ..................................... 6-10
SRS CIRCUIT ................................................ 6-11
VELOCITY MODULATOR CIRCUIT ........................ 6-12
TOC-1 ZP26/28 - TOC