Text preview for : 50V500.pdf part of Hitachi 50V500 195 page service manual No. 0178 (Jun 2003) for Hitachi 50 & 60 inch LCD rear projection color TV model 50V500 & 60V500 with LC37 & LC37F chassis.
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PA
NTSC
LC37 Chassis LC37F Chassis
No. 0178
50V500/LC37 60V500A/LC37F
R/C: CLU-5729TSI
TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW
SAFETY PRECAUTIONS ......................................................................................................2 PRODUCT SAFETY NOTICE................................................................................................3 SERVICING PRECAUTIONS ................................................................................................4 AGENCY REGULATORY INFORMATION ............................................................................8 TABLE OF CONTENTS ........................................................................................................9 SPECIFICATIONS................................................................................................................11 FEATURES AND FUNCTIONS............................................................................................22 PWB ADJUSTMENTS ........................................................................................................49 Updated 01/04/07 TROUBLESHOOTING FLOW CHARTS..............................................................................95 DC VOLTAGE ......................................................................................................................96 WAVEFORMS ..................................................................................................................108 REPLACEMENT PARTS LIST ..........................................................................................114 Updated 08/05/05 EXPLODED VIEW ............................................................................................................138 Updated 07/12/05 PRINTED CIRCUIT BOARDS ..........................................................................................148 CONNECTION DIAGRAM ................................................................................................160 BLOCK DIAGRAM ............................................................................................................161 BASIC CIRCUIT SCHEMATIC DIAGRAM ........................................................................162 FINAL WIRING DIAGRAM ................................................................................................175 MAJOR ICS & UNITS ........................................................................................................179 Updated 04/05/07 OPTICAL ENGINE REMOVAL PROCEDURE ..................................................................181
NOTE: This product is to be serviced at board level.
CAUTION: Before servicing this chassis, it is important that the service technician read the "Product Safety Notices" in this service manual. SAFETY NOTICE USE ISOLATION TRANSFORMER WHEN SERVICING
Components having special safety characteristics are identified by a ! on the parts list in this Service Data and its supplements and bulletins. Before servicing the chassis, it is important that the service technician read and follow the "Safety Precautions" and "Product Safety Notices" in this Service Manual.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LCD REAR PROJECTION TELEVISION JUNE 2003 HHEA-MANUFACTURING DIVISION
Version 0178.09
LC37/LC37F
SAFETY PRECAUTIONS
NOTICE: Comply with all cautions and safety-related notes located on or inside the cabinet and on the chassis or optic unit. WARNING: Since the chassis of this receiver is connected to one side of the AC power supply during operation, whenever the receiver is plugged in service should not be attempted by anyone unfamiliar with the precautions necessary when working on this type of receiver. The following precautions should be observed: 1. Do not install, remove, or handle the optic unit in any manner unless shatterproof goggles are worn. People not so equipped should be kept away from the optic unit while handling. 2. When service is required, an isolation transformer should be inserted between power line and the receiver before any service is performed on a "HOT" chassis receiver. 3. When replacing a chassis in the receiver, all the protective devices must be put back in place, such as barriers, nonmetallic knobs, adjustment and compartment cover-shields, isolation resistors, capacitors, etc. 4. When service is required, observe the original lead dress. 5. Always use the manufacturer's replacement components. Critical components as indicated on the circuit diagram should not be replaced by another manufacturer's. Furthermore, where a short circuit has occurred, replace those components that indicate evidence of overheating. 6. Before returning a serviced receiver to the customer, the service technician must thoroughly test the unit to be certain that it is completely safe to operate without danger of electrical shock, and be sure that no protective device built into the receiver by the manufacturer has become defective, or inadvertently defeated during servicing. Therefore, the following checks should be performed for the continued protection of the customer and service technician. Leakage Current Cold Check With the AC plug removed from the 120V AC 60Hz source, place a jumper across the two plug prongs. Using an insulation tester (DC500V), connect one lead to the jumpered AC plug and touch the other lead to each exposed metal part (antennas, screwheads, metal overlays, control shafts, etc.), particularly any exposed metal part having a return path to the chassis should have a minimum resistor reading of 2.4M and a maximum resistor reading of 5.2M . Any resistance value below or above this range indicates an abnormality which requires corrective action. An exposed metal part having a return path to the chassis will indicate an open circuit.
Leakage Current Hot Check Plug the AC line cord directly into a 120V AC 60Hz outlet (do not use an isolated transformer for this check). Turn the AC power ON. Using a Leakage Current Tester (Simpson's Model 228 or equivalent), measure for current from all exposed metal parts of the cabinet (antennas, screwheads, overlays, control shafts, etc.) particularly any exposed metal part having a return path to the chassis or to a known earth ground (water pipe, conduit, etc.). Any current measured must not exceed 0.5 MIU.
DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES 2-WIRE CORD
LEAKAGE CURRENT TESTER
(READING (READING SHOULD NOT SHOULD NOT BE ABOVE BE ABOVE 0.5 MIU) 0.5 mA)
+
-
EARTH GROUND
ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUS AS REQUIRED)
AC LEAKAGE TEST ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE RECEIVER TO THE CUSTOMER.
2
TABLE OF CONTENTS
LC37/LC37F
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in HITACHI television receivers have special safety-related characteristics. These are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified with an ! mark in the schematics and parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the HITACHI-recommended replacement component, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Production safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current HITACHI Service Manual. A subscription to, or additional copies of HITACHI Service Manuals may be obtained at a nominal charge from HITACHI Sales Corporation. Ultraviolet Radiation OPTIC UNIT: The primary source of Ultraviolet Radiation in this receiver is the optic unit. The optic unit utilized in this chassis is specially constructed to limit Ultraviolet Radiation emissions. For continued Ultraviolet Radiation protection, the replacement optic unit must be the same type as the original HITACHI-approved type. Service Personnel - WARNING Eye damage may result from directly viewing the light produced by the lamp used in this product. Always turn off lamp before opening optic unit. Ultraviolet radiation eye protection required during servicing. When troubleshooting and making test measurements in a receiver with an excessive high voltage problem, avoid being unnecessarily close to the optic unit and the high voltage component. Do not operate the chassis longer than is necessary to locate the cause of excessive voltage. When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with solder. Also, when soldering do not inhale any smoke or fumes produced.
SAFETY NOTICE USE ISOLATION TRANSFORMER WHEN SERVICING
Components having special safety characteristics identified by ! on the parts list in this service manual and its supplements and bulletins. Before servicing this product, it is important that the service technician read and follow the "Safety Precautions" and the "Product Safety Notices" in this Service Manual. For continued ultraviolet protection, replace optic unit with original type or HITACHI equivalent type.
POWER SOURCE
This television receiver is designed to operate on 120 Volts/60Hz, AC house current. Insert the power cord into a 120 Volts/60Hz outlet. NEVER CONNECT THE TV TO OTHER THAN THE SPECIFIED VOLTAGE OR TO DIRECT CURRENT. CAUTION! The following symbol near the fuse indicates fast operating fuse (to be replaced). Fuse ratings appear within the symbol. Example:
125V 6A F901 The rating of fuse F901 is 6.0A-125V. Replace with the same type of fuse for continued protection against fire. NOTE: The lamp in this product contains Mercury. Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada).
This Service Manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void warranty. Consumers should not risk trying to do the necessary repairs and should refer to a qualified service technician. WARNING Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health and Safety Code, Section 25249.5).
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TABLE OF CONTENTS
LC37/LC37F
SERVICING PRECAUTIONS
CAUTION: Before servicing instruments covered by this service data and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 2 of this publication. NOTE: If unforseen circumstances create conflict between the following SERVICING PRECAUTIONS and any of the SAFETY PRECAUTIONS on page 2 of this publication, always follow the SAFETY PRECAUTIONS. Remember: Safety First. General Servicing Guidelines 1. Always unplug the instrument AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board, module, or any other instrument assembly. b. Disconnecting or reconnecting any instrument electrical plug or other electrical connection. Connecting a test substitute in parallel with an electrolytic capacitor in the instrument. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge build-up or exposure of the assembly. Use only a grounded-tip soldering iron to solder or desolder ES devices. Use only an anti-static type solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ES device. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.) Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)
2.
3.
4.
c.
5.
6.
2.
Do not spray chemicals on or near this instrument or any of its assemblies. Unless specified otherwise in these service data, clean electrical contacts by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator: 10% (by volume) Acetone and 90% (by volume) ispropyle alchohol (90%-99% strength). CAUTION: This is a flammable mixture. Unless specified otherwise in these service data, lubrication of contacts is not required. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service data might be equipped. 7.
3.
8.
4.
5.
Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat-sinks are correctly installed. Always connect the test instrument ground lead to the appropriate instrument chassis ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last. Use with this instrument only the test fixtures specified in this service data. CAUTION: Do not connect the test fixture ground strap to any heatsink in this instrument.
6.
7.
Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.
4
TABLE OF CONTENTS
LC37/LC37F General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range 500°F to 600°F. 2. Use an appropriate gauge of resin-core solder composed of 60 parts tin/40 parts lead. Keep the soldering iron tip clean and well-tinned. Thoroughly clean the surfaces to be soldered. Use a small wirebristle (0.5 inch or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. Use the following desoldering technique. a. Allow the soldering iron tip to reach normal temperature (500°F to 600°F). b. Heat the component lead until the solder melts. Quickly draw away the melted solder with an anti-static, suctiontype solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil. 3. 2. Draw away the melted solder with an anti-static suction-type sol der removal device (or with solder braid) before removing the IC.
Replacement 1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to areas.)
3. 4.
5.
"Small-signal" Discrete Transistor Removal/Replacement 1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend into a "U" shape the end of each of three leads remaining on the circuit board. Bend into a "U" shape the replacement transistor leads. Connect to replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact, then solder each connection.
3. 4.
6.
Use the following soldering technique. a. Allow the sodering iron tip to reach normal temperature (500°F to 600°F). b. First, hold the soldering iron tip and solder strand against the component lead until the solder melts. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil or components. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.
Power Output Transistor Devices Removal/Replacement 1. Heat and remove all solder from around the transistor leads. 2. Remove the heatsink mounting screw (if so equipped). Carefully remove the transistor from the circuit board. Insert new transistor in circuit board. Solder each transistor lead, and clip off excess lead. Replace heatsink.
c.
3. 4. 5. 6.
d.
Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possilbe to diode body. 2. Bend the two remaining leads perpendicularly to the circuit board. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board. Securely crimp each connection and solder it. Inspect (on the circuit board copper side) the solder joints of the two "original leads". If they are not shiny, reheat them and, if necessary, apply additional solder.
3.
Use Soldering Iron to Pry Leads
4. 5.
IC Removal/Replacement Some Hitachi unitized chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.
5
LC37/LC37F Fuses and conventional Resistor Removal/Replacement 1. Clip each fuse or resistor lead at top of circuit board hollow stake. 2. Securely crimp leads of replacement component around stake 1/8 inch from top. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board, to prevent excessive component temperatures.
At Other Connections Use the following technique to repair defective copper pattern at
3.
DEFECTIVE COPPER REMOVED
Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board, causing the foil to separate from, or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered. In Critical Copper Pattern Areas High component/copper pattern density and/or special voltage/current characteristics make the spacing and integrity of copper pattern in some circuit board areas more critical than in others. The circuit foil in these area is designated as Critical Copper Pattern. Because Critical Copper Pattern requires special soldering techniques to ensure the maintenance of reliability and safety standards, contact your Hitachi personnel. At IC Connections To repair defective copper pattern at IC connections, use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections.) 1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary.) 2. Carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.
Insulated Jumper Wire connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board. 1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure hazardous condition will not exist if the jumper wire opens. 2. Trace along the copper pattern from both wire sides of the pattern break and locate the nearest component directly connected to the affected copper pattern. Connect insulated 20-gauge jumper wire from the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION: Be sure the insulated jumper wire is dressed so that it does not touch components or sharp edges.
3.
BARE JUMPER WIRE
Frequency Synthesis (FS) Tuning Systems 1. Always unplug the instrument AC power cord before disconnecting or reconnecting FS tuning system cables and before removing or inserting FS tuning system modules. 2. The FS tuner must never be disconnected from the FS tuning control module while the power is applied to the instrument. When troubleshooting intermittent problems that might be caused by defective cable connection(s) to the FS tuning system, remove the instrument AC power as soon as the defective connector is found and finish confirming the bad connection with a continuity test. This procedure will reduce the probability of electrical overstress of the FS system semi-conductor components.
CRIMP AND SOLDER
3. Install Jumper Wire and Solder 3. Bend a small "U" in one end of a small-gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection. Route the jumper wire along the path of the cut-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area, and clip off any excess jumper wire.
4.
6
LC37/LC37F
NOTE: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose.
Leadless Chip Components (surface mount)
Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the board to mount standard transistors or diodes. Some chip capacitor or resistor board solder pads may have holes through the board, however the hole diameter limits standard resistor replacement to 1/8 watt. Standard capacitors may also be limited for the same reason. It is recommended that identical chip components be used. . Chip resistors have a three digit numerical resistance code -1st and 2nd significant digits and a multiplier. Example: 162 = 1600 or 1.6K resistor, 0 = 0 (jumper). Chip capacitors generally do not have the value indicated on the capacitor. The color of the component indicates the general range of the capacitance. Chip transistors are identified by a two letter code. The first letter indicates the type and the second letter, the grade of transistor. Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anode or common cathode. Check the parts list for correct diode number.
How to Replace Flat-lC --Required Tools--
· Soldering iron · iron wire or small awl · De-solder braids · Magnifier 1. Remove the solder from all of the pins of a Flat-lC by using a de-solder braid.
Flat-IC De-Solder Braid Soldering Iron
2.
Put the iron wire under the pins of the Flat-lC and pull it in the direction indicated while heating the pins using a soldering iron. A small awl can be used instead of the iron wire.
Iron Wire Awl
Pull
Soldering Iron
Soldering Iron
Component Removal
1. 2. 3. Use solder wick to remove solder from component end caps or terminals. Without pulling up, carefully twist the component with tweezers to break the adhesive. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal. Put a small amount of solder on the board soldering pads. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds
3.
Remove the solder from all of the pads of the FlatlC by using a de-solder braid. Soldering
Iron De-Solder Braid Flat-IC
Chip Component Installation
1. 2. 4.
Position the new Flat-lC in place (apply the pins of the Flat-lC to the soldering pads where the pins need to be soldered). Properly determine the Polarity Symbol positions of the soldering pads and pins by correctly aligning the polarity symbol.
Chip Components
TYPE
5.
SOLDER CAPS
C
GRADE
Solder all pins to the soldering pads using a fine tipped soldering iron.
B E
TRANSISTOR
CAPACITOR 1ST DIGIT
COMMON CATHODE
2ND DIGIT MULTIPLIER = 1600 = 1.6K
Solder
Soldering Iron
6.
ANODES MH DIODE
SOLDER CAPS RESISTOR
Check with a magnifier for solder bridge between the pins or for dry joint between pins and soldering pads. To remove a solder bridge, use a de-solder braid as shown in the figure below.
De-Solder Braid Bridge Solder Soldering Iron
7
LC37/LC37F
USEFUL INFO
AGENCY REGULATORY INFORMATION
Modifications
The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by Hitachi Home Electronics (America), Inc. may void the user's warranty.
Cables
Any cables that are supplied with the system must be replaced with identical cables in order to assure compliance with FCC rules. Order Hitachi spares as replacement cables.
Declaration of Conformity
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation.
Cable Compatible Television Apparatus- Tèlèvision câblocompatible, Canada.
Notes on Closed Caption: This television receiver will display television closed captioning, ( of the FCC rules. For questions regarding this declaration, contact: Hitachi America, LTD. Home Electronics Division 900 Hitachi Way Chula Vista, CA 91914 Tel. 1-800-448-2244 (1-800-HITACHI) ATTN: CUSTOMER RELATIONS
or
), in accordance with paragraph 15.119
8
TABLE OF CONTENTS
LC37/LC37F
TO GO TO AN ADJUSTMENT, CLICK ON ITS HEADING BELOW
TABLE OF CONTENTS
I. SPECIFICATIONS ..................................................................................................................................................................11 1. Feature................................................................................................................................................................................11 2. Main Parts and A/V Terminals ............................................................................................................................................12 3. White Balance ....................................................................................................................................................................13 4. Performance Specifications ................................................................................................................................................13 5. Terminals and Other Functions ..........................................................................................................................................14 5.1 Available signal Format and Frequency ....................................................................................................................14 5.2 Terminal Shape ..........................................................................................................................................................14 5.3 DVI Specification ........................................................................................................................................................15 5.3.1 General Specification ..................................................................................................................................15 5.3.2 DVI Connector Specification ........................................................................................................................15 6. Aspect Specification For Each Input Source ......................................................................................................................16 6.1 Aspect Mode ..............................................................................................................................................................16 6.1.1 Aspect Mode: Off ........................................................................................................................................16 6.1.2 Aspect Mode: On ........................................................................................................................................17 6.1.3 Aspect Mode Resolution ..............................................................................................................................18 6.1.4 Black Side Panel Operation ........................................................................................................................19 6.1.5 Vertical Position Operation ..........................................................................................................................19 6.2 PIP Mode....................................................................................................................................................................20 6.2.1 PIP Available Mode......................................................................................................................................20 6.2.2 PIP Mode Resolution ..................................................................................................................................21 II. FEATURES AND FUNCTIONS ..............................................................................................................................................22 1. Front Panel Controls ..........................................................................................................................................................22 2. Rear Panel Jacks ..............................................................................................................................................................25 3. Lamp Replacement ............................................................................................................................................................29 4. On-Screen-Display Features ..............................................................................................................................................33 4.1 Video Setting ..............................................................................................................................................................34 4.2 Channel Manager ......................................................................................................................................................38 5. Connecting AV Network ......................................................................................................................................................40 5.1 AV Network Setup Wizard ..........................................................................................................................................41 5.2 AV Network Codes ....................................................................................................................................................42 5.3 How To Use AV Network ............................................................................................................................................43 5.4 How To Use The Aspect Mode ..................................................................................................................................48 III. ASSEMBLED P.W.B. ADJUSTMENT ..................................................................................................................................49 1. Memory Initialization ..........................................................................................................................................................49 Table 1. I2C Parameter List ................................................................................................................................................61 Table 2. Factory Reset........................................................................................................................................................88 2. Factory Reset ....................................................................................................................................................................50 3. Raster Position Adjustment ................................................................................................................................................51 3.1 Mechanical Raster Position Adjustment ....................................................................................................................51 3.1.1 Geometry Specifications ..............................................................................................................................51 3.1.2 Adjustment Mechanism................................................................................................................................52 3.1.3 Flow Chart For Adjustment ..........................................................................................................................53 3.1.4 Adjustment Method ......................................................................................................................................54 3.2 Electrical (I2C) Picture Position Adjustment................................................................................................................54 4. Display Area Specification ..................................................................................................................................................55 5. Amplitude Adjustment ........................................................................................................................................................56 5.1 RGB Amplitude Adjustment ........................................................................................................................................56 6. Sub-Contrast Adjustment....................................................................................................................................................56 7. Ghost Adjustment ..............................................................................................................................................................57 8. V.COM (Flicker) Adjustment................................................................................................................................................57 9. NASH (Vertical Line) Adjustment........................................................................................................................................57 10.(Gamma) White Balance Adjustment..................................................................................................................................58 11. Color (White) Uniformity Adjustment ..................................................................................................................................59 12.Door Protection Operation Check ......................................................................................................................................60 13.Lamp Holder Protection Operation Check..........................................................................................................................60 14.High Temperature Protection Operation Check..................................................................................................................60
9
TABLE OF CONTENTS
LC37/LC37F
IV. POWER P.W.B. ..................................................................................................................................................................92 1. Power Supply ....................................................................................................................................................................93 1.1 Ouput Voltage ..............................................................................................................................................................93 1.2 Portection Circuit Blcok Diagram................................................................................................................................94 V. VI. TROUBLE SHOOTING FLOWCHART ..............................................................................................................................95 DC VOLTAGE ....................................................................................................................................................................96
VII. WAVEFORMS ..................................................................................................................................................................108 VIII. REPLACEMENT PARTS LIST ........................................................................................................................................114 IX. X. XI. EXPLODED VIEW ............................................................................................................................................................138 PRINTED CIRCUIT BOARD ............................................................................................................................................148 CONNECTION DIAGRAM ..............................................................................................................................................160
XII. BLOCK DIAGRAM ..........................................................................................................................................................161 XIII. BASIC CIRCUIT DIAGRAM ............................................................................................................................................162 XIV. FINAL WIRING ................................................................................................................................................................175 XV. MAJOR ICs and UNITS ..................................................................................................................................................179
10
LC37/LC37F
I. SPECIFICATION
1.0 Features:
· · · · · · · · · · · · · · · · · Superfine Picture Quality 1280 Line Horizontal Resolution Remote (Controls many VCR brands, cable boxes, satellite boxes, and other audio equipment.) New Easy-to-Use (3-Language) On-Screen Menu New AV Network Infra-Red (IR) System Control up to 4 components with one remote. (2 IR Mouse cables included.) Full Set of Input Jacks, including S-VIDEO COMPONENT VIDEO: Y-PB/PR Six Aspect Modes Closed Caption Decoder 2-Tuner Picture in Picture Dual Antenna Inputs Video Input Sensor 3 Dimensional Y/C Comb Filter Full 1080i HDTV capable. DVI with HDCP (High bandwidth Digital Content Protection V1.0 compatible). Photo MC (View digital still pictures from a memory card) Technology. Technology. *SRS and the symbol are registered trademarks of SRS Labs, Inc. SRS technology is incorporated under license from SRS Labs, Inc. *Licensed by BBE Sound, Inc. under USP4638258 and 4482866. BBE and BBE symbol are registered trademarks of BBE Sound, Inc. Manufactured under license from BBE Sound, Inc. Outputs: · · · Video . . . . . . . . . . . . . . . . . . . . .1.0Vp-p. 75 Ohm Audio (Fixed) . . . . . . . . . . . . .470mVrms, 1k Ohm S-Video Luminance (Y) . . . . . . . . . .1.0Vp-p, 75 Ohm Chrominance (C) . . . . . .0.286Vp-p, 75 Ohm
Inputs: · · · Power Input . . . . . . . . . . . . .AC 120V, 60Hz Stand-by Power . . . . . . . . . . . . . . . . . .0.6W Power Consumption -Pmax . . . . . . . . . . . . . . . . . . . . . . . .172W -Pave . . . . . . . . . . . . . . . . . . . . . . . .158W Antenna input impedance . . . . . . . . .75 Ohm Channel coverage . . . . . . . . . . . . . . .181ch. VHF-Band . . . . . . . . . . . . . . . . . . . . .2 ~ 13 UHF-Band . . . . . . . . . . . . . . . . . . . .14 ~ 69 CATV Mid Band . . . . . . . . . . . . . . .A-5 ~ A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . .A-I Super Band . . . . . . . . . . . . . . . . . . . . .J-W Hyper Band . . . . . . . . . . . . . . .W+1 - W+28 Ultra Band . . . . . . . . . . . . . . .W+29 - W+84 Video . . . . . . . . . . . . . . . .1.0Vp-p, 75 Ohm S-Video Luminance (Y) . . . . . . . . . .1.0Vp-p, 75 Ohm Chrominance (C) . . . . . .0.286Vp-p, 75 Ohm Component Video Luminance (Y) . . . . . . . . . . . . . . .1.0Vp-p, 75 Ohm Chrominance (PB/PR) . . . . . . . . .0.7Vp-p, 75 Ohm Audio input Impedance . . . . . . . . . .47k Ohm Average input level . . . . . . . . . . . . . . . .470mVrms DVI - HDTV . . . . . . . . . . . . . . . . . . . . . .DVI 25pin
· ·
Dimensions: 50V500
· · · · Height (in.) (mm) Width (in.) (mm) Depth (in.) (mm) Weight (lbs.) (kg) 35 1/2 901 54 5/8 1,387 16 3/8 415 119 54.2
60V500A
40 1/4 1,025 63 3/8 1,609 20 1/2 520 139 63
· ·
·
· · ·
NOTE:
Due to improvements, specifications in this service manual are subject to change without notice.
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LC37/LC37F
I. SPECIFICATION
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LC37/LC37F
I. SPECIFICATION 3. White Balance HIGH: 14,700K+23MPCD (X=0.260±0.01, Y=0.280±0.01) MEDIUM: 7500K+0MPCD (X=0.301±0.02, Y=0.311±0.02) STANDARD: 6500K+0MPCD (X=0.313±0.02, Y=0.329±0.02) Black/White: 5400K+0MPCD (X=0.334±0.02, Y=0.343±0.02) at screen center
LC37 UE22331 HIGH MEDIUM 14700 23 0.260
LC37F UE22334
Black/White
TYP MIN
370 cd/m2 240 cd/m2
257 cd/m2 166 cd/m2
MAX ±3mm
MAX ±4mm
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LC37/LC37F
I. SPECIFICATION
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LC37/LC37F
I. SPECIFICATION
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LC37/LC37F
I. SPECIFICATION
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LC37/LC37F
I. SPECIFICATION
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LC37/LC37F
I. SPECIFICATION 6.1.3 Aspect Mode Resolution
4x3 Format 16x9 Format
788 dots
4x3
16:9 Standard
16x9
16:9 Standard
1386 dots
1386 dots
75%
4x3
75%
16:9 Zoom
16x9
16:9 Zoom
75%
75%
4x3
4:3 Standard
16x9
4:3 Standard
998 dots (95%)
998 dots (95%)
90%
4x3
90%
4:3 Expanded
16x9
4:3 Expanded
75%
4x3
75%
4:3 Zoom1
16x9
4:3 Zoom1
56%
4x3
56%
4:3 Zoom2
16x9
4:3 Zoom2
75%
75%
4:3 Expanded Mode
180 170 160
4:3 Standard
162%
Horizontal 150 Expansion 140 Ratio (%)
130 120 110 100 0 10 20 30 40 50 60 70 80 90 100
100%
4:3 Expanded
113% 162% 113% 162%
Horizontal Position
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788 dots
LC37/LC37F
I. SPECIFICATION
6.1.4 Black Side Panel Operation
Menu Black Side Panel: OFF Menu Black Side Panel: ON
Gray Side Panel
Black Side Panel
6.1.5 Vertical Position Operation
Input 16:9 Standard 0 0 0 0 0 0 0 0 0 0 0 16:9 Zoom 10 Step 10 Step 10 Step 10 Step 10 Step 10 Step 10 Step 10 Step 10 Step 10 Step 10 Step Vertical Position 4:3 4:3 Standard Expanded 0 10 Step 0 _ 0 _ 0 _ 0 0 0 0 0 10 Step _ 10 Step _ 10 Step _ 10 Step 10 Step 10 Step 10 Step 4:3 Zoom1 10 Step 10 Step _ 10 Step _ 10 Step _ 10 Step 10 Step 10 Step 10 Step 4:3 Zoom2 10 Step 10 Step _ 10 Step _ 10 Step _ 10 Step 10 Step 10 Step 10 Step
ANT A/B Video 1
Video YPBPR
NTSC 480i 480p 720p 1080i 480i 480p 720p 1080i 480i 480p 720p 1080i NTSC
4x3 4x3 16x9 16x9 4x3 16x9 16x9 4x3 16x9 16x9 4x3 16x9 4x3 16x9 4x3 16x9 4x3 16x9
DVI
Video 2
YPBPR
Video Video 3 Video 4 Video 5 PIP Mode
Video NTSC S-Video Video NTSC S-Video Video NTSC S-Video POP/PIP/SPLIT SURF12/STROBE
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LC37/LC37F
I. SPECIFICATION
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LC37/LC37F
I. SPECIFICATION 6.2.2 PIP Mode Resolution
POP Mode
4x3
788 dots
262 dots
4x3
4x3
262 dots
4x3
4x3
4x3
1386 dots
1042 dots
344 dots
PIP Mode
788 dots
4x3
4x3
16x9
16x9
4x3
4x3
1386 dots
304 dots
788 dots
16x9
16x9
16x9
16x9
16x9
16x9
1386 dots
455 dots
SPLIT Mode
STROBE Mode
788 dots (95%) 788 dots
SURF12 Mode
4x3 262 dots 788 dots
788 dots
228 dots
16x9
16x9
228 dots
16x9
16x9
262 dots 249 dots
4x3
4x3
4x3
4x3 4x3
693 dots
344 dots
332 dots
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II. FEATURES AND FUNCTIONS 1.0 FRONT PANEL CONTROLS
LC37/LC37F
PUSH
PUSH
PHOTO MC
INPUT 5 S-VIDEO VIDEO L/MONO R AUDIO
VOL-
VOL+
CH-
CH+
INPUT
MENU
EXIT
SELECT
MENU/SELECT button This button allows you to enter the MENU, making it possible to set TV features to your preference without using the remote. This button also serves as the SELECT button when in MENU mode. INPUT/EXIT button Press this button to select the current antenna source, VIDEO: 1, 2, 3, 4, 5 or alternate antenna source. Your selection is shown in the top right corner of the screen. This button also serves as the EXIT button when in MENU mode. NOTES: Your remote control does not have an INPUT button. To change to video inputs, press VID1~VID5 buttons depending on your choice. To change antenna source, press the ANT button on your remote control.
CHANNEL selector Press these buttons until the desired channel appears in the top right corner of the TV screen. These buttons also serve as the cursor down ( ) and up ( ) buttons when in MENU mode. VOLUME level Press these buttons for your desired sound level. The volume level will be displayed on the TV screen. These buttons also serve as the cursor left ( ) and right ( ) buttons when in MENU mode. When the TV power is turned OFF at a volume level 31 or greater, the volume level will default to 30 when the TV is turned ON. However, if it is set to a level 30 or less, the volume level will be at the level it was set when the TV is turned ON. FRONT INPUT JACKS (INPUT 5) Use these audio/video jacks for a quick hook-up from a camcorder or VCR to instantly view your favorite show or new recording. Press the INPUT/EXIT button on the front control panel until VIDEO: 5 appears in the top right corner of the TV screen. If you have mono sound, insert the audio cable into the left audio jack. PHOTO MC Insert a PC card adapter with your Photo memory card to view the digital still pictures (see page 44). To view your digital pictures, an adapter is required. Below are adapters that are tested with your television. Please find out which memory card you have and acquire it from your local source.
Memory Card Tested Samples 1. Secure Digital (SD) Dazzle 4 in 1 (DM-9400) 3. Memory Stick (MS) or 4. Smart Media (SM) SanDisk 4 in 1 (SDDR-6507) 5. Compact Flash I (CF I) Dazzle (DM-9000) or 6. Compact Flash II (CF II) SanDisk (SDCF-38) 7. xD Picture Card Olympus (MACF-10) Notes: Adapter is subject to change for improvement. Some terms used herein are trademarks of various companies.
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LC37/LC37F
II. FEATURES AND FUNCTIONS 1.0 FRONT PANEL CONTROLS (CONT.)
IR RECEIVER/LEARNING AV NET sensor The screen area acts as the IR receiver (remote sensor) and the LEARNING AV NET sensor of the TV. When using the remote control, point it towards the screen for best response. POWER button Press this button to turn the TV on or off. POWER light This light is on during normal operation. Light Blinking Slowly (2 seconds): television lamp is cooling down. It takes 12-15 seconds to warm up and about 2 minutes to cool down. TEMP indicator This light is off during normal operation. If this indicator is lit, the optic unit is too hot. If this indicator is blinking, the cooling fan has stopped. Please call service. LAMP indicator - NORMAL OPERATION INDICATOR IS OFF If light is lit, the lamp has failed. See page 29-32 for lamp replacement procedure. Consult your Hitachi dealer for proper part. If light is blinking, lamp cover is not assembled securely after replacement.
NOTES: 1. INDICATOR INDICATION
LIGHT ON
MEANING
NO LAMP LIGHT or BROKEN LAMP WRONG LAMP UNIT ASSEMBLY / LAMP DOOR OPEN Too hot inside the OPTIC unit COOLING FAN STOPPED NORMAL OPERATION COOL DOWN
ACTION
Need to replace if LAMP still does not light by "Power On" again. Check assembly condition of LAMP UNIT
LAMP LED
BLINKING
TEMP LED
LIGHT ON BLINKING
LIGHT ON
POWER
SLOWLY BLINKING
2. If the LAMP, TEMP, and POWER LED are blinking in the order below, the television is warming up. POWER TEMP LAMP
PHOTO MC LED LIGHT INDICATOR Shows the status of the memory card. IMPORTANT NOTES: 1. A small number of missing, discolored, or lit all the time dots or pixels is characteristic of TFT LCD technology due to manufacturing process for such technology irrespective of manufacturer. If your LCD has defective pixels, it should not be considered defective. 2. Since LCD Rear PTV incorporates a high pressure lamp to display an image, it may take about one minute for the picture to become stable, after the power has been turned on. After extended use, the picture may darken, the color may look unusual, or the lamp "goes out," (burns out). You may hear a "pop" sound when the lamp "goes out." These are common characteristics of the lamp, and should not be considered defective. 3. LCD Rear PTV incorporates an advanced cooling fan system to prevent from overheating. If you hear the cooling fan, it should not be considered defective. 4. If you hear a "cracking" sound from the TV cabinet, it is due to the TV's cabinet expanding and contracting due to room temperature changes. It has no effect on the TV's functions.
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LC37/LC37F
II. FEATURES AND FUNCTIONS 1.0 FRONT PANEL CONTROLS (CONT.)
The front panel jacks are provided as a convenience to allow you to easily connect a camcorder or VCR as shown in the following examples:
INPUT 5 S-VIDEO VIDEO L/MONO R AUDIO
INPUT 5 S-VIDEO VIDEO L/MONO R AUDIO
NOTE:
1. Completely insert connection cord plugs when connecting to front panel jacks. If you do not, the played back picture may be abnormal. 2. If you have a S-VHS VCR, use the S-INPUT cable in place of the standard video cable. 3. If you have a mono VCR, insert the audio cable into the left audio jack of your TV.
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LC37/LC37F
II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS
ANT A
DVI-HDTV
PR TO CONVERTER
INPUT 1
PB
Y
R
(MONO)/L
AUDIO
PR ANT B
INPUT 2
PB
Y/VIDEO
R
(MONO)/L
AUDIO
R
AUDIO TO HI-FI CENTER IN IR BLASTER INPUT 3
(MONO)/L VIDEO
S-VIDEO
R
INPUT 4
(MONO)/L VIDEO
S-VIDEO
L
R
MONITOR OUT AUDIO
L
VIDEO
S-VIDEO
R
Antenna Input/Output ANT A- A 75-Ohm RF antenna or CATV (Cable TV) input. ANT A can be displayed as a main picture or sub-picture. ANT B- A 75-Ohm RF antenna or CATV (Cable TV) input. ANT B can only be displayed as a main picture. ANT B cannot be displayed as a sub-picture. TO CONVERTER- This antenna output allows the ANT A connection to pass directly to a different source, such as a cable box, only when ANT B is displayed as a main picture. Audio/Video Inputs 1, 2, 3 and 4 The VID1~VID4 buttons will select each video source each time they are pressed. Use the audio and video inputs to connect external devices, such as VCRs, camcorders, laserdisc players, DVD players etc. (If you have mono sound, insert the audio cable into the left audio jack.) NOTE: You may use VIDEO or S-VIDEO inputs to connect to INPUT 3 and 4, but only one of these inputs may be used at a time.
MONITOR OUT These jacks provide fixed audio and video signals which are used for recording. Use the S-VIDEO Output for high quality video output. NOTE: S-VIDEO output may be used for recording only when the input is of S-VIDEO type.
AUDIO TO HI-FI Output These jacks provide variable audio output to a separate stereo amplifier. With this connection, the audio to the stereo can be controlled by the television's main volume. CENTER IN (Input) This jack is for stereo amplifiers with center signal capability. This feature allows the TV speakers to be used as a center speaker. The TV must be set as a center channel by selecting "TV as Center" on the Internal Speakers Settings of the Audio Menu. S-VIDEO Inputs 3 and 4 Inputs 3 and 4 provide S-VIDEO (Super Video) jacks for connecting equipment with S-VIDEO output capability.
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LC37/LC37F
II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS (CONT.)
Component: Y-PBPR Inputs Inputs 1 and 2 provide Y-PBPR jacks for connecting equipment with this capability, such as a DVD player or Set Top Box. You may use composite video signal for INPUT:2. NOTES: 1. Do not connect composite VIDEO and S-VIDEO to Input 3, 4 or 5 at the same time. S-VIDEO has priority over VIDEO input. 2. Your component outputs may be labeled Y, B-Y, and R-Y. In this case, connect the components B-Y output to the TV's PB input and
the components R-Y output to the TV's PR input. 3. Your component outputs may be labeled Y-CBCR. In this case, connect the component CB output to the TV's PB input and the component CR output to the TV's PR input. 4. It may be necessary to adjust TINT to obtain optimum picture quality when using the Y-PBPR inputs. 5. To ensure no copyright infringement, the MONITOR OUT output will be abnormal, when using the Y-PBPR jacks. 6. Input 2 (Y/VIDEO) can be used for composite video and component video input.
IR Blaster This jack provides IR output to your external components (VCR, Cable box, DVD player, etc.). With this connection, your external components can automatically be controlled by the AV Net feature. This connection will allow you to control the external components with your television's remote control (see page 40). DVI-HDTV Input (Input 1) Use this DVI-HDTV Input for your external devices with DVI-HDTV output such as a Set-Top-Box, high-band DTV decoders, DVD players with Digital Content Protection. NOTES: 1. Only DTV format such as 1080i, 720p, 480i and 480p are available for DVI-HDTV input. 2. The DVI-HDTV input is NOT compatible when used with a DVD player from a personal computer. 3. When connecting a Set-Top-Box with a copy-protect digital out terminal, a high definition picture can be displayed on the screen in its digital form.
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LC37/LC37F
II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS (CONT.)
TYPICAL FULL-FEATURE SETUP
CONNECT TO IR BLASTER IR Sensor
Outside antenna or cable TV coaxial cable
DIGITAL OUTPUT
(Provided)
D-VHS
2-Way signal splitter
DVD Player
Y OUTPUT PB/CB PR/CR L
HDTV Set-Top Box
R
Y PB PR OUTPUT L R
L R OUTPUT
ANT A
VCR #1
DVI-HDTV
PR TO CONVERTER
INPUT 1
PB
Y
ANT IN
OUTPUT
S-VIDEO
V
L
R
R
(MONO)/L
AUDIO
PR ANT B
INPUT 2
PB
Y/VIDEO
R
(MONO)/L
AUDIO
R
AUDIO TO HI-FI CENTER IN IR BLASTER INPUT 3
(MONO)/L VIDEO
S-VIDEO
R
INPUT 4
(MONO)/L VIDEO
S-VIDEO
L
R
MONITOR OUT AUDIO
L
VIDEO
S-VIDEO
R
OUTPUT
INPUT
Cable TV Box
L R INPUT
CENTER OUTPUT
IR Sensor
S-VIDEO V
L INPUT
R
S-VIDEO V
L OUTPUT
R
VCR #2
Laserdisc player, VCR, camcorder, etc.
Stereo System Amplifier
CONNECT TO IR BLASTER
(Provided)
NOTES:
1. Connect only 1 component to each input jack.
2. 3. 4. Follow connections that pertain to your personal entertainment system. Composite video signal can be input to Input2~Input5. Cables are not included with the purchase of this TV, except when noted as "provided".
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LC37/LC37F
II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS (CONT.)
· · · · · · · S-VIDEO connections are provided for high performance laserdisc players, VCRs etc. that have this feature. Use these connections in place of the standard video connection if your device has this feature. If your device has only one audio output (mono sound), connect it to the left audio jack on the television. Refer to the operating guide of your other electronic equipment for additional information on connecting your hook-up cables. A single VCR can be used for VCR #1 and VCR #2, but note that a VCR cannot record its own video or line output (INPUT: 3 in the example on page 27). Refer to your VCR operating guide for more information on line input-output connections. You may use VIDEO or S-VIDEO inputs to connect to Input 3, Input 4 or Input 5, but only one of these may be used at a time. Connect only 1 component (VCR, DVD player, camcorder, etc.) to each input jack. COMPONENT: Y-PBPR (Input 1 &2) connections are provided for high performance components, such as DVD players and settop-boxes. Use these connections in place of the standard video connection if your device has this feature. Input 2 accepts both composite and component video signals. Your component outputs may be labeled Y, B-Y, and R-Y. In this case, connect the components B-Y output to the TV's PB input and the components R-Y output to the TV's PR input. Your component outputs may be labeled Y-CBCR. In this case, connect the components CB output to the TV's PB input and the components CR output to the TV's PR input. You may use composite video signal for Input 2~Input 5. It may be necessary to adjust TINT in the Video menu to obtain optimum picture quality when using the Y-PBPR inputs. To ensure no copyright infringement, the MONITOR OUT output may be abnormal, when using the Y-PBPR or DVI jacks. When using DVI input from a Set-Top-Box, it is recommended to use a 1080i or 720p input signal.
· · · · · ·
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LC37/LC37F
II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT
Lamp Life The lamp life may vary based on usage of the LCD Rear PTV. Turning on and off frequently may shorten the life of the lamp. Lamp Replacement After extended use, if the TV picture turns dark, the color looks unusual or LAMP INDICATOR light turns on, then it is time to replace the lamp with a new lamp.
WARNING: The lamp gets very hot! The lamp may explode if improperly handled. To avoid injury, please observe the following precautions. · · · · · · · Do not open lamp compartment or attempt to remove lamp assembly unless the lamp assembly is being replaced. Unplug the product's power cord from the AC outlet before attempting to replace the lamp assembly. If the lamp is in use when failure occurs or if the lamp has exploded, wait at least 30-45 minutes for the lamp to cool before opening the lamp compartment or touching the lamp assembly or any broken pieces. Broken lamp pieces can cause injury. Handle with gloves to avoid cuts. Do not place any foreign objects inside the lamp compartment. When installing a new lamp, follow handling instruction included with the new lamp. Do not touch glass surface of new lamp.
The lamp in this product contains Mercury. Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada). CAUTION! A "LAMP" indicator will light when lamp becomes hot. Unplug product's power cord from the AC outlet and allow lamp to cool for at least 30-45 minutes. If "LAMP" indicator is still lit, check the lamp unit assembly.
NOTES: · Contact your Hitachi dealer for a new lamp unit. Using other lamps may cause damage to the TV Set. TYPE NAME: LC37 LAMP ASSEMBLY PART NUMBER: UX21511 · When replacing the lamp, let it cool down completely, for approximately 30 to 45 minutes after the power has been switched off and A.C. cord has been unplugged. · Do not touch the glass of the new lamp or make it dirty which can shorten the life of the lamp and reduce the picture quality. · Keep the lamp out of the reach of children and away from flammable materials. · Do not pour water onto the removed lamp or put any object inside the lamp. · Once the lamp is removed, do not put flammable materials and metal objects inside the lamp receptacle on the TV set. Do not touch the receptacle. · Install the new lamp securely, otherwise the picture may become dark or it may cause severe overheating. · Install the lamp cover correctly, otherwise power will not come on. · The lamp in this product contains Mercury. Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada).
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LC37/LC37F
II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT (CONT.)
1. Turn off the main power switch and unplug the power cord. Wait at least 30 minutes to allow the lamp to cool down before replacing it.
120V
FRONT COVER
PUSH
POWER
NOTE:
THE LAMP IS VERY HOT AND MAY CAUSE FIRE OR SEVERE BURNS. WAIT AT LEAST 30~45 MINUTES TO ALLOW THE LAMP TO COOL BEFORE PROCEEDING WITH LAMP REMOVAL.
2.
Remove the front cover from the TV set. This is held by a snap on. Pull the front cover outwards until the quick snap on disengages.
PULL
LAMP COMPARTMENT FRONT COVER
PUSH
NOTE:
The lamp in this product contains Mercury. Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada).
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LC37/LC37F
II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT (CONT.)
3. Remove the screw securing the lamp cover with a Phillips head screw driver as shown. Remove the lamp cover.
SCREW LAMP COVER
PHILLIP HEAD SCREW DRIVER
NOTE:
THE LAMP IS VERY HOT AND MAY CAUSE FIRE OR SEVERE BURNS. WAIT AT LEAST 30~45 MINUTES TO ALLOW THE LAMP TO COOL BEFORE PROCEEDING WITH LAMP REMOVAL.
4.
Remove the two screws that hold the lamp in place. Remove the lamp unit by holding the lamp handle, then pulling outwards. Exercise caution when removing the lamp unit to avoid injury to your fingers.
NOTE:
DO NOT PUT YOUR HAND IN THE LAMP STORAGE AREA AFTER THE LAMP UNIT IS REMOVED, YOU MAY GET BURNED.
HANDLE
LAMP UNIT
REMOVE SCREWS
HANDLE
5.
Replace with the new lamp. Place the removed lamp into the empty box of the replacement lamp. Do not touch the front glass of the new lamp or its receptacle. This may shorten the life of the lamp and reduce the picture quality. · Push the lamp unit back to its original position. · Tighten the screws firmly on the lamp unit. If they are loose, the TV may not operate correctly.
LAMP UNIT HANDLE
HANDLE
TIGHTEN THE SCREWS
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LC37/LC37F
II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT (CONT.)
6. Without installing the lamp cover, the power will be off and the Lamp Indicator will flash (see page 23). Be sure to install the lamp cover by re-engaging the two clips and tighten the screws before turning the power on, otherwise it may cause unusual colors.
SCREW LAMP COVER
PHILLIP HEAD SCREW DRIVER
NOTE:
7.
IF POWER IS CONNECTED BEFORE THE LAMP COVER IS INSTALLED, THE POWER WILL BE OFF AND THE LAMP INDICATOR WILL FLASH (SEE PAGE 23).
Install the front cover as shown below. Put the front cover back in and align the snap on quick connect then push inwards holding the left and right side of the front cover until you hear a snap. Push the other snap on gently to make a good fit.
PUSH
FRONT COVER
PUSH
8.
Plug power cord into AC outlet and turn on the main power switch.
120V
PUSH
POWER
NOTE:
The lamp in this product contains Mercury. Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada).
32
LC37
II. FEATURES AND FUNCTIONS 4.0 ON-SCREEN-DISPLAY FEATURES
Picture Mode Contrast Brightness Color Tint Sharpness Color Temperature Select between the two picture modes; Day and Night. Adjust contrast. Adjust brightness. Adjust color. Adjust tint. Adjust sharpness. Set this to High for less intense color with more blue, set to Medium for natural color, set to Standard for st