Zenith R50V26 - Manual

Zenith R50V26

Zenith R50V26 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS
  • Page 3 – ii
  • Page 4 – HOLD-DOWN CIRCUIT INFORMATION
  • Page 5 – TABLE OF CONTENTS
  • Page 7 – SECTION 1; OVERVIEW
  • Page 9 – ON SCREEN DISPLAY
  • Page 10 – REAR CONNECTIONS
  • Page 11 – REMOTE CONTROL; REMOTE BUTTON DESCRIPTIONS; Press and hold the device button until the indicator; NOTE: Use the CABLE device button for satellite receivers.
  • Page 12 – TVs; Cable Boxes; REMOTE BRAND CODES
  • Page 13 – REMOTE CODES; DVD Players; Satellite Receivers
  • Page 14 – K E Y N A M E
  • Page 16 – USER MENUS; SETUP; Press select to set; CHANNEL REVIEW
  • Page 17 – CLOCK SET; HD FOCUS; Press the Select Button on; PICTURE FORMATS; Use the UP/DOWN arrow to choose Picture Formats.; SPECIAL; CHANNEL LABELS; At this point you have three options:
  • Page 18 – SOURCE ID; FAVORITE CHANNELS
  • Page 19 – Favorite Channels are only available on ANT 1 source.; PARENTAL CONTROL
  • Page 20 – • Channel: Selects the channel you wish to restrict.; SECURITY TIMER; Notes
  • Page 21 – CAPTIONS; BACKGROUND; VIDEO MENU; PICTURE SETTINGS; Reset: To return setting to original levels.
  • Page 23 – THEATER MENU; THEATER MODES; SPLIT SCREEN
  • Page 25 – SECTION 3; CIRCUIT DESCRIPTIONS; POWER ON AND OFF; · Turn on the Shut Down “Power Shorted” detection; POWER SUPPLY SHUTDOWN; PROTECT 2 to (D938) on Sub Power Supply PWB
  • Page 26 – NOTE: PROTECT 1 will not go below 2.2V even if the 5V or
  • Page 27 – Pin 4 is monitored for Over Voltage internal to
  • Page 28 – NEGATIVE VOLTAGE LOSS DETECTION; RP26 and RP27 form a voltage divider. The top side; SHUT OFF DURING STAND-BY; PROTECT 1 monitors
  • Page 29 – SUB POWER SUPPLY VISUAL LED; LED USAGE; DEFLECTION HORIZONTAL DRIVE ACTIVATION
  • Page 30 – This chassis utilizes 4 Green
  • Page 31 – Cut off collapses the Vertical circuit during I
  • Page 32 – 0,000 volts DC supplied to the CRTs anodes.; TO DEFLECTION YOKES; This is the Dynamic Focus output voltage.; NOTE; : When a 1080i signal is input through component
  • Page 33 – SPOT CIRCUIT; INFRARED REMOTE RECEIVER
  • Page 34 – HD FOCUS SENSORS AND INTERFACE
  • Page 35 – ON SCREEN DISPLAY PATH:; ABL VOLTAGE OPERATION
  • Page 36 – ACCL TRANSISTOR OPERATION
  • Page 37 – FLEX CONVERTER UC01
  • Page 38 – C bus data and clock. The communications ports; SUB VIDEO CHROMA IX03; C bus to this
  • Page 39 – The Microprocessor uses a combination of I; SRS AUDIO +29V REGULATOR INDICATED BY D912.
  • Page 40 – SERVICE ADJUSTMENTS; ZP-25 CHASSIS ADJUSTMENT ORDER
  • Page 41 – CHASSIS PRE-HEAT RUN ADJUSTMENTS
  • Page 42 – C Bus alignment menu, with Power; CHASSIS TILT (RASTER INCLINATION) ADJUSTMENT
  • Page 43 – VERTICAL SIZE ADJUSTMENT; NOTE: Centering magnet may be moved to facilitate.; HORIZONTAL SIZE ADJUSTMENT; NOTE: After entering DCAM, with each press of the Service; BEAM FORM ADJUSTMENT; IMPORTANT: Screen format should be “NORMAL”.
  • Page 44 – LENS FOCUS ADJUSTMENT
  • Page 45 – CHASSIS HORIZONTAL PHASE (FINE) ADJUSTMENT; CHASSIS INTELLISENSE “PATTERN SET UP”; NOTE: This instruction should be applied when a new DCU
  • Page 46 – DIGITAL CONVERGENCE ALIGNMENT; DISPLAY selects GREEN Adj.; SUB PICTURE AMPLITUDE; ZP25 Factory Reset Condition
  • Page 47 – SECTION 4; MODEL PARTS
  • Page 51 – ZP26 Exploded View; SECTION 5
  • Page 52 – ZP28 Exploded View
  • Page 53 – 0” Wiring Diagram - Back
  • Page 54 – 0” Wiring Diagram - Back
  • Page 56 – 6” Wiring Diagram - Back
  • Page 57 – 5” Wiring Diagram - Back
  • Page 59 – Convergence Circuit 1/2; SECTION 6
  • Page 60 – Convergence Circuit 2/2
  • Page 61 – Magic Focus Circuit
  • Page 62 – Deflection Power Supply Circuit
  • Page 63 – Deflection Circuit
  • Page 64 – Power Supply Circuit
  • Page 69 – SRS Circuit
  • Page 70 – Velocity Modulator Circuit
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SERVICE MANUAL

Product Type:

Digital Rear Projection

Chassis:

ZP26/28

Manual Series: PV154
Manual Part #: 923-03506
Model Line:

E

Product Year:

2 0 0 2

General Info ................................................. 1
Service Menu ................................................ 2
Servicing ..................................................... 3
Part List ...................................................... 4
Diagrams / PCB Layouts .................................. 5
Schematics ................................................... 6

Published August 2002

by Technical Publications

Zenith Electronics Corporation

201 James Record Road

Huntsville, Alabama 35824-1513

Copyright

2002 by Zenith Electronics Corporation

Model Series:

CONTENTS

R 5 0 V 2 6
R 5 6 W 2 8
R 6 0 V 2 6
R 6 5 W 2 8

Printed in U.S.A.

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Summary

Page 2 - PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS

PV154 - 923-03506 ZP26/28 - SAFETY PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS i IMPORTANT SAFETY NOTICE This manual was prepared for use only by properly trained audio-video servicetechnicians. When servicing this product, under no circumstances should the originaldesign be modifie...

Page 3 - ii

PV154 - 923-03506 ZP26/28 - SAFETY ii CRT ANODE HIGH VOLTAGE MEASUREMENT PROCEDURE To prevent possible exposure to radiation caused by excessive CRTAnode voltage, the High Voltage Shutdown circuit senses the levelof flyback pulse from “Flyback Transformer” representative of theactual high voltage on...

Page 4 - HOLD-DOWN CIRCUIT INFORMATION

PV154 - 923-03506 ZP26/28 - SAFETY - iii - PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS HOLD-DOWN CIRCUIT INFORMATION NORMAL CONDITION In normal condition, the DC voltage at point is ap-proximately 4.88V through pin 1 of P1407 (HV Block).The voltage at point is approximately 4.86V. T...

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