Instruction/ maintenance manual of the product R50V26 Zenith
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SERVICE MANU AL Produ ct T ype: Digital Rear Projection Chassis: ZP26/28 Manual Series: PV154 M an u al P art #: 923-03506 Model Line: E Pr oduct Y ear: 2002 General Info ................................................. 1 Service Menu ...............
PV154 - 923-03506 ZP26/28 - SAFETY PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS i IMPORT ANT SAFETY NOTICE This manual was prepared for use only by properly trained audio-video service technicians.
PV154 - 923-03506 ZP26/28 - SAFETY ii CRT ANODE HIGH VOL T AGE MEASUREMENT PROCEDURE T o prevent possible e xposure to r adiation caused by ex cessive CRT Anode voltage, the High Voltage Shutdown circuit senses the level of flyback pulse from “Flyback Transformer” representative of the actual high voltage on the CRT anode.
PV154 - 923-03506 ZP26/28 - SAFETY - iii - PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS HOLD-DO WN CIRCUIT INFORMA TION NORMAL CONDITION In normal condition, the DC voltage at point is ap- proximately 4.88V through pin 1 of P1407 (HV Block).
T ABLE OF CONTENTS PV154 - 923-03506 ZP26/28 - TOC SECTION 1 .................... OVERVIEW OVERVIEW ..................................................... 1 -1 ON SCREEN DISPLA Y ..................................... 1 - 3 REMOTE BUTTON DESCRIPTIONS ..
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PV154 - 923-03506 1-1 ZP26/28 - OVERVIEW OVERVIEW SECTION 1 The R56/65W28 and R50/60V26 are HDTV Monitors. This means that most of the components of a HDTV are present ex cept for th e ASTC tun er . An HDTV r eceiver or converter box is requir ed to view an AST C sign al.
PV154 - 923-03506 1-2 ZP26/28 - OVERVIEW OVERVIEW R50/60V26 SPECIFICA TIONS VIDEO Picture Tubes .......................................... 7" LFM Resolution Display .......................... 540p or 1080i Mirror .................................
PV154 - 923-03506 1-3 ZP26/28 - OVERVIEW OVERVIEW SPECIAL FEA TURES HD Monitor Digital DisplayDisplays Digital Signals at 540p or 1080i (User Selects) Tri-lingual Menus .
PV154 - 923-03506 1-4 ZP26/28 - OVERVIEW OVERVIEW REAR CONNECTIONS FRONT CONNECTIONS S-Video V ideo L/Mono R menu source - volume + - channel + power select exit V ARIABLE A UDI O OUT R L ANTENNA/ CAB.
PV154 - 923-03506 1-5 ZP26/28 - REMOTES REMOTE CONTROL REMOTE BUTTON DESCRIPTIONS PROGRAMMING THE REMOTE If you’re using Zenith products, the remote is already programmed for most common codes. For other brands, or if your remote fails to control your Zenith products, you’ll have to program the remote.
923-03460 1-6 ZP26/28 - REMOTES REMOTE CONTROL TVs VCRs Daewoo . . . . . . . 149 Zenith . . . . . . . . 101 121 149 152 TV/VCR Combination Codes Adven tura TV/VCR . 154 Daewoo TV/VCR . . 148 Funai TV/VCR. . . . 154 Goldstar TV/VCR . . 153 172 Symphoni c TV/VCR 154 Zenith TV/VCR .
PV154 - 923-03506 1-7 ZP26/28 - REMOTES REMOTE CONTROL REMOTE CODES DVD Play ers Audio CD Play ers Audio T ape Decks Audio T uners/Amps Alphastar . . . . . . . 516 Chaparral . . . . . . . 501 502 Cheyenn e . . . . . . . 502 Dishnet . . . . . . . . 515 Drak e .
923-03460 1-8 ZP26/28 - REMOTES REMOTE CONTROL KEY NAME T V Mode VCR Mode Cable Mode DVD Mode HD/STB Mode source TV Sour ces TV Sources TV Sources TV Sources TV Sources light Ligh ts Keys 5 Seconds Li.
PV154 - 923-03506 1-9 ZP26/28 - REMOTES REMOTE CONTROL USER MENUS fav ch (Channel) TV Favorite Channels VCR Channel M ap Cable P age Down N/A N/A quit TV Men u Quit VCR Quit Cable Quit DVD Resume HD/S.
PV154 - 923-03506 1-10 ZP26/28 - MENUS USER MENUS USER MENUS SETUP TRILINGUAL MENUS Press MENU to access the Setup menu. Use the DOWN arrow to choose Trilingual. Press the RIGHT arrow button to activate the Language menu option. Use the UP/DOWN arrow button to choose your language preference for the on-screen menus, press Select to set and confirm.
PV154 - 923-03506 1-11 ZP26/28 - MENUS USER MENUS CLOCK SET Use the UP/DOWN arrow to choose Clock Set. Use the RIGHT arrow button to choose first the time option and use the UP/DOWN arrow buttons to adjust time options. Press the RIGHT arrow button and then use the UP/DOWN arrow buttons to adjust month/date/ year options.
PV154 - 923-03506 1-12 ZP26/28 - MENUS USER MENUS Use the UP/DOWN arrows to choose an option. If you chose Ch Labels, press the RIGHT arrow button to access the preset channel label list and scroll through this list using the UP/DOWN arrow buttons. When you find the appropriate label for the channel, press the SELECT button.
PV154 - 923-03506 1-13 ZP26/28 - MENUS USER MENUS Notes • Favorite Channels are only available on ANT 1 source. • If Parental Control Ratings are locked, it will disable multiple channel insets (including the Favorite Channels POP-3 insets). • When POP-3 favorite channel is on, Closed Caption option will not appear .
PV154 - 923-03506 1-14 ZP26/28 - MENUS USER MENUS SETUP Press MENU and then the RIGHT/LEFT arrow button to access the Special Menu. Press the UP/DOWN arrow to choose Parental Control and then press the RIGHT arrow button to activate Parental Control. When prompted, enter the default code 7777 from the number keypad.
PV154 - 923-03506 1-15 ZP26/28 - MENUS USER MENUS CAPTIONS Press MENU and the RIGHT/LEFT arrow button to access the Special Menu. Use the UP/DOWN arrow to choose Captions. Press the RIGHT arrow button to activate Captions option. Use the LEFT/RIGHT arrow to choose Display Off, On, or Auto option.
PV154 - 923-03506 1-16 ZP26/28 - MENUS USER MENUS RESET Use the UP/DOWN arrow to choose Reset (Reset restores the levels to their original settings). Press SELECT to confirm your choice. ADV ANCED SETTINGS Use the UP/DOWN arrow to choose Advanced Settings.
PV154 - 923-03506 1-17 ZP26/28 - MENUS USER MENUS THEA TER MENU Quit T o Exit T o Menu Bar Menu Theater Modes TV Surround Movies Music S ports Reset THEATER SEL VIDEO SETUP AUDIO SPECIAL THEA TER MODES Press MENU and then the RIGHT/LEFT arrow button to access the Theater menu.
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CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-1 ZP26/28 - SERVICING SECTION 3 CIRCUIT DESCRIPTIONS POWER ON AND OFF The power supply runs all the time when AC is applied. The use of the power supply creating Stand-By Voltage supplies elimin ates the need f or a Stand-By transf ormer .
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-2 ZP26/28 - SERVICING · Shorted SW +5V (IC02) on Signal PWB through PRO- TECT 1 to (D940) on Sub Power Supply PWB NOTE: PROTECT 1 will not go below 2.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-3 ZP26/28 - SERVICING HOT GROUND SIDE SHUT DOWN SENSING CIRCUITS (INTERNAL TO IP01) LA TCHED SHUT DO WN MONITORS (AC must be removed to recover) 1 . Pin 4 is monitored for Over Voltage internal to IP01. 2 . IP01 itself is monitored for Excessive Heat.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-4 ZP26/28 - SERVICING sistor turns Off, generating a High on its collec- tor . This output High is r outed through D705 to pin (1) of Connector PQD2 called PROTECT and Shut Down occurs as described above.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-5 ZP26/28 - SERVICING NOTE: If the 5.5V or the 3.3V regulators OPEN, the set will not go into shut down, they must have a short to produce a shut down input on PROTECT 1. The set will shut down after the Screen go excessively brigh t, but this is from the 115V over curr ent sensor , not PRO TECT 1.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-6 ZP26/28 - SERVICING B+ GENERA TION FOR SUB PO WER SUPPL Y DRIVER Vcc for the Driver IC is first generated by the AC input. This voltage is called Start Up Voltage. I901 requires 16V DC to operate n ormally . It will begin operati on at 6.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-7 ZP26/28 - SERVICING CP05 and takes over as Run Voltage (16.3V) at pin 4 of IP01. REGULA TION Figure 2 is a simplified diagram of the main Power Supply used in some Pr ojection T elevision chassis .
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-8 ZP26/28 - SERVICING 30Kv HV 30,000 volts DC supplied to the CRTs anodes. TO DEFLECTION YOKES Horizontal and Vertical deflection wave forms driving the deflection yokes. MAGIC SWITCH Output from the DAC1 (I006 pin 7) when the customer selects HD FOCUS from the customer’s menu.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-9 ZP26/28 - SERVICING A sample of the High Voltage is output from the Flyback transformer TH01 pin (12). This voltage is sent to pin (9) of the High Voltage Driver IC IH01. This voltage is compared to the reference voltage available at pin (12).
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-10 ZP26/28 - SERVICING • HD FOCUS SENSORS AND INTERFACE • MICROPROCESSOR • RAINFOREST IC (Video Processor). • SERVICE ONL Y SWIT CH • MAGIC FOCUS (HD Focus) activation control. THE DIGIT AL CONVERGENCE UNIT (DCU) The DCU is the heart of the Digital convergence circuit.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-11 ZP26/28 - SERVICING the BUSY line. As long as the BUSY line is active, the Main Microprocessor ignores the IR signal.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-12 ZP26/28 - SERVICING The ABL voltage is determined by the current draw through th e Flyback transform er . As the pictur e brightness becomes brighter or increases, the demand for replacement of the High Voltage being consumed is greater .
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-13 ZP26/28 - SERVICING in the EEPROM, such as the window for Closed Caption detection. Data and Clock lines are SDA1 from pin (2) of the Microprocessor to pin (5) of the EEPROM and SCL2 from pin (3) of the Microprocessor to pin (6) of the EEPROM.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-14 ZP26/28 - SERVICING and a little more dark just before it arrives. This gives the impression that the signal pops out of the screen or a 3D effect. The Microprocessor communicates with the 3D Y/C IC via I 2 C bus data and clock.
CIRCUIT DESCRIPTIONS PV154 - 923-03506 3-15 ZP26/28 - SERVICING The Microprocessor uses a combination of I 2 C Bus com- munication and the Serial Data, Clock and Load lines for control. The I 2 C communication scheme only requires 2 lines for control.
SERVICE ADJUSTMENTS PV154 - 923-03506 3-16 ZP26/28 - SERVICING SERVICE ADJUSTMENTS ZP-25 CHASSIS ADJUSTMENT ORDER Always follow th e sequence below . Or der Adjustment Item Screen Format Signal DCU Da.
SERVICE ADJUSTMENTS PV154 - 923-03506 3-17 ZP26/28 - SERVICING CHASSIS PRE-HEA T RUN ADJUSTMENTS PRESET EACH ADJUSTMENT VR TO THE CONDITION SHOWN: BEFORE PRE HEA T RUN. 1 . Red and Green Drive VR on the CRT PWB. This is part of th e I 2 C Service Men u.
SERVICE ADJUSTMENTS PV154 - 923-03506 3-18 ZP26/28 - SERVICING 6 . Select Item H POSI and adjust the data so that the center of Video matches the location of the Digital Crosshatch pattern noted in step {4}. 7 . Exit from the I 2 C Menu. 1080I HD MODE ADJUSTMENT: 1 .
SERVICE ADJUSTMENTS PV154 - 923-03506 3-19 ZP26/28 - SERVICING Left of Cen ter and Blue is o ffset Right o f center . Please use the following information to accurately offset Red and Blue fr om center . Also see Overlay Dimen sions f or further details.
SERVICE ADJUSTMENTS PV154 - 923-03506 3-20 ZP26/28 - SERVICING low .) 8 . Also adjust the Red and Blue CRT beam shapes ac- cording to the steps (1) to (3). 9 . After the adjustment is completed, return R, G and B static VRs to the Best Focus point. LENS FOCUS ADJUSTMENT PREP ARA TION FOR ADJU STMENT · Receive the Cross-hatch pattern signal.
SERVICE ADJUSTMENTS PV154 - 923-03506 3-21 ZP26/28 - SERVICING OK, repeat steps 5 through 12. 12. Press the MENU key on the remote to Exit Service Menu. Remember: When adjusting the Screen con- trols, after the Cut Off adjustment has been com- pleted, never adjust the controls clockwise.
SERVICE ADJUSTMENTS PV154 - 923-03506 3-22 ZP26/28 - SERVICING NORMAL MODE: 0 1 2 3 4 5 6 7 RH X 02 X FE X 02 X 04 RV X 00 X 00 X 02 X 00 GH X 00 X FE X 00 X 04 GV X 00 X 00 X 02 X 00 BH X 00 X FE X 00 X 04 BV X 00 X 00 X 02 X 00 DIGIT AL CONVERGENCE ALIGNMENT There is no way to Calculate using a button on the remote.
PV154 - 923-03506 3-1 ZP26/28 - P ARTS MODEL P ARTS SECTION 4 MODEL P ARTS All HD-S mod els are m odule level repair only . Parts contact inf ormation is below .
PV154 - 923-03506 3-2 ZP26/28 - P ARTS MODEL P ARTS R60V26 LO C P ART # DESCRIPTION 1 NS P MIRROR MOUNT RIGHT 2 NS P MIRROR MOUNT LEFT 3 NS P MIRROR MOUNT UPPER 4 992-10036 MIRROR 5 NS P CABINET UPPER REAR 6 874-10052 SCREEN ASS. WITH PROTECTOR 7 P ART OF 8 ESCUTCHEON UPPER 8 833-10024 ESCUT CHEON ASSY .
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PV154 - 923-03506 5-1 ZP26/28 - EXPLODED VIEWS ZP26 Exploded View SECTION 5 LO C A-R 60 V 26 B- R5 0 B2 6 P A RT # DESC RI P T I O N 1 A B NS P MIRR O R MO UN T RI G HT 2 A B NS P MIRR O R MO UN T L E.
PV154 - 923-03506 5-2 ZP26/28 - EXPLODED VIEWS ZP28 Exploded View LO C A-R 56 W 28 B- R6 5 W 2 8 PAR T # D E SC R IPT ION 1 A B NS P MI RRO R MOUNT RIGHT 2 A B NS P MI RRO R MOUNT L EFT 3 A B NS P MI .
PV154 - 923-03506 5-3 ZP26/28 - EXPLODED VIEWS 50” Wiring Diagram - Back P AQ1,PL PQS1 PQS2 P AQ1,PL PQS1 PQS2 MR PA Q to VM P. W . B . N003 Hold Anode(B) make double loops (LEAD CLAMP P ARTS No. IS 3875441.) MARK SHOULD BE APPL Y A LEAD CLAMP(N01 1) MARK SHOULD BE APPL Y A LEAD CLAMP(N008) (LEAD CLAMP P ARTS No.
PV154 - 923-03506 5-4 ZP26/28 - EXPLODED VIEWS 60” Wiring Diagram - Back to Speaker(PL) PL PL PFT FOCUS MG PCR MR PCR,MR make a loop PCB,PCG MB,MR E007 LX-ZCA T3035-1330 LEAD CLAMPER N008 N008 LEAD .
PV154 - 923-03506 5-5 ZP26/28 - EXPLODED VIEWS 50/60” Wiring Diagram - Front LEAD CLAMPER N009 PVSG CPT P .W .B. (B) PFS PFC PFT #231 POWER SUPPL Y DEF .
PV154 - 923-03506 5-6 ZP26/28 - EXPLODED VIEWS 56” Wiring Diagram - Back PS NOTE: Refer to the figure (04/page) when the HV connector (anode lead) is removed or inserted. NOTE: Anode lead should be separated from others wires. (min. 10mm) Anode lead must not be twisted during the operation of wiring dress.
PV154 - 923-03506 5-7 ZP26/28 - EXPLODED VIEWS 65” Wiring Diagram - Back PFT to CONTROL P. W . B . PFS, PFS Note: for J#02~, for J#01 ferrite position is on the upper clamp to Speaker(PL) PL PL PFT .
PV154 - 923-03506 5-8 ZP26/28 - EXPLODED VIEWS 56/65” Wiring Diagram - Front LEAD CLAMPER N009 PVSG CPT P .W .B. (B) PFS PFC PFT #231 POWER SUPPL Y DEF .
C D E F G 1 2345678 6-1 ZP26/28 SHEET 1 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-2 ZP26/28 SHEET 2 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-3 ZP26/28 SHEET 3 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-4 ZP26/28 SHEET 4 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-5 ZP26/28 SHEET 5 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-6 ZP26/28 SHEET 6 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-7 ZP26/28 SHEET 7 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-8 ZP26/28 SHEET 8 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-9 ZP26/28 SHEET 9 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-10 ZP26/28 SHEET 10 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-11 ZP26/28 SHEET 11 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
C D E F G 1 2345678 6-12 ZP26/28 SHEET 12 NOTE: W A VEFORMS AND VOL T AGES WERE MEASURED A T 120V AC, CHANNEL 5, AND NSTC COLOR BARS. CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL .
An important point after buying a device Zenith R50V26 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Zenith R50V26 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Zenith R50V26 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Zenith R50V26 you will learn all the available features of the product, as well as information on its operation. The information that you get Zenith R50V26 will certainly help you make a decision on the purchase.
If you already are a holder of Zenith R50V26, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Zenith R50V26.
However, one of the most important roles played by the user manual is to help in solving problems with Zenith R50V26. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Zenith R50V26 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
