Hitachi PANO0145 Service Manual

APRIL 2001 HHEA-MANUFACTURING DIVISION

No. 0145

60DX10B 50GX30B 50DX10B 43GX10B

R/C: CLU-4311UG

NNTTSSCC

HHPP1111 HHPP1122

CChhaassssiiss

SERVICE MANUAL

CONTENTS

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

TECHNICAL CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CIRCUIT PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CAUTIONS WHEN CONNECTING/DISCONNECTING THE HV CONNECTOR . . . . . .12

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

REMOTE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . .15

SERVICE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

ADJUSTMENT LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

DC VOLTAGE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

PROTECTION CIRCUIT BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

BASIC CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

PRINTED CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

CHASSIS WIRING DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

QUICK REFERENCE PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of

electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Before servicing this chassis, it is important that the service technician read the “IMPORTANT SAFETY INSTRUCTIONS” in this service manual.

SAFETY NOTICE

USE ISOLATION TRANSFORMER WHEN SERVICING

Components having special safety characteristics are identified by a on the schematics and 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 “Important Safety Instructions” in this Service Manual.

PROJECTION COLOR TELEVISION

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

Components having special safety characteristics are identified by a on the schematics and on the parts list in this service manual and its supplements and bulletins. Before servicing this chassis, it is important that the service technician read and follow the “Important Safety Instructions” in this Service Manual.

For continued X-Radiation protection, replace picture tube with original type or Hitachi approved equivalent type.

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. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair 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).

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.

This television receiver provides display of television closed captioning in accordance with section 15.119 of the FCC rules.

FEDERAL COMMUNICATIONS COMMISSION NOTICE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

¥ Reorient or relocate the receiving antenna. ¥ Increase the separation between the equipment and the receiver. ¥ Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. ¥ Consult the dealer or an experienced radio/television technician for help.

IMPORTANT SAFETY INSTRUCTIONS

USE ISOLATION TRANSFORMER WHEN SERVICING

IMPORTANT SAFETY INSTRUCTION

1. Before returning an instrument to the customer, always make a safety check of the entire instrument, including but not limited to the following items. a. Be sure that no built-in protective devices are

defective and/or have been deleted during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpaper, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate

this instrument or permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage.

b. Be sure that there are no cabinet openings through

which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to (1) spacing between the picture tube and cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover.

c. Antenna Cold Check Ð With the instrument AC plug

removed from any AC source, connect an electrical jumper across the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input, exposed terminal screw and, if applicable, to the coaxial connector. If the measured resistance is less than 1.0 megohms or greater than 5.2 megohms, an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the instrument AC switch in the off position.

d. Leakage Current Hot Check Ð With the instrument

completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.0 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on position and then in the off position, measure from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle bracket, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamps. Reverse the instrument power cord plug in the outlet and repeat test.

ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES.

e. High Voltage — This receiver is provided with a hold

down circuit for clearly indicating that voltage has increased in excess of a predetermined value. Comply will all notes described in this Service Manual regarding this hold down circuit when servicing, so that this hold down circuit may correctly be operated.

f. Service Warning — With maximum contrast, operating

high voltage in this receiver is lower than 31.5 kV. In case any component having influence on high voltage is replaced, confirm that the high voltage with maximum contrast is lower than 31.5 kV. To measure H.V. use a high impedance H.V. meter. Connect (-) to chassis earth and (+) to the CRT anode button. (See the following connection diagram.)

Note: Turn power switch off without fail before the

connection to the anode button is made.

LEAKAGE CURRENT TESTER

(READING SHOULD NOT BE ABOVE 0.5mA)

EARTH GROUND

TEST ALL EXPOSED METAL SURFACES

DEVICE UNDER TEST

2-WIRE CORD

ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUS AS REQUIRED)

AC Leakage Test

Chassis ground

FBT

High Impedance H.V. meter

Deflection P.W.B.

(TH01)

High voltage connector

g. X-radiation – TUBE: The primary source of X-

radiation in this receiver is the picture tube. The tube utilized for the above mentioned function in this chassis is specially constructed to limit X-radiation emissions. For continued X-radiation protection, the replacement tube must be the same type as the original, Hitachi approved type. When troubleshooting and making test measurements in a receiver with a problem of excessive high voltage, avoid being unnecessarily close to the picture tube and the high voltage component. Do not operate the chassis longer than is necessary to locate the cause of excessive voltage.

h. X-radiation Shield –

1. This receiver is provided with X-ray shield plates for protection against X-radiation. Do not remove X-ray shield plates A, B, or C shown in Fig. 1 unnecessarily, when troubleshooting and/or making test measurements.

2. To prevent X-radiation, after replacement of picture tube and lens, confirm these components to be fixed correctly to bracket and cabinet, and not to be taken off easily.

Shield Plate A

Glass Lens for Shielding

Shield Plate B

Shield Plate C

Shield Plate D

Detailing X-radiation shield

Shield Plate C

Fig. 1. Installation of shield lens, shield cover and shield plates (oblique view).

IMPORTANT SAFETY INSTRUCTIONS

2. Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the receiver chassis, or on the picture tube.

3. Design Alteration Warning – Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions including but not limited to circuit modifications and the addition of items such as auxiliary audio and/or video output connectors, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions may void the manufacturer’s warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom.

4. Picture Tube Implosion Protection Warning – The picture tube in this receiver employs integral implosion protection. For continued implosion protection, replace the picture tube only with one of the same type number. Do not remove, install, or otherwise handle the picture tube in any manner without first putting on shatterproof goggles equipped with side shields. People not so equipped must be kept safely away while picture tubes are handled. Keep the picture tube away from your body. Do not handle the picture tube by its neck.

5. Hot Chassis Warning – a. Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. Confirm that the AC power plug is inserted correctly with an AC voltmeter by measuring between the chassis and a known earth ground. If a voltage reading in excess of

1.0V is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground. b. Some TV receiver chassis normally have 85V AC (RMS) between chassis and earth ground regardless of the AC plug polarity. These chassis can be safely serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection. c. Some TV receiver chassis have a secondary ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground systems are electrically separated by insulating material that must not be defeated or altered.

6. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts – be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage and e. antenna wiring. Always inspect in all areas for pinched, out-ofplate, or frayed wiring. Do not change spacing between components and the printed circuit board. Check AC power cord for damage.

7. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.

8. PRODUCT SAFETY NOTICE – Many TV electrical and mechanical parts have special safety-related characteristics some of which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified in Hitachi service data by shading on schematics and by a in the parts list. Use of substitute replacement that does not have the same safety characteristics as the recommended replacement part in Hitachi service data parts list might create shock, fire, and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate. For the latest information, always consult the appropriate current Hitachi service literature. A subscription to, or additional copies of service literature may be obtained at a nominal charge from Hitachi.

IMPORTANT SAFETY INSTRUCTIONS

CAUTION: Before servicing instruments covered by this service data and its supplements and addenda, read and follow the “Important Safety Instructions” on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 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.

c. 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.

d. Discharging the picture tube anode.

2. T est high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not test high voltage by “drawing an arc.” The H.V. Distribution Box has an internal 400MW resistor (bleeder resistor) connected from the high voltage to ground. After power is removed from the instrument the high voltage will discharge through the high voltage bleeder resistor. If the tubes have high voltage after power is removed, then the bleeder resistor is defective or the bleeder ground is disconnected.

3. Discharge the picture tube’s anode at any of the R, G, or B outputs on the H.V. Distribution Box only by (a) first connecting one end of an insulated clip lead to the degaussing or kine aquadag grounding system shield at the point where the picture tube socket ground lead is connected, and then (b) touch the other end of the insulated clip lead to the picture tube high voltage distribution box R, G, or B output, using an insulated handle to avoid personal contact with high voltage.

4. Do not spray chemicals on or near this instrument or any of its assemblies.

5. Unless specified otherwise in these service data, clean electrical contracts 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) isopropyl alcohol (90%99% strength). CAUTION: This is a flammable mixture. Unless

specified otherwise in these service data, lubrication of contacts is not required.

6. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service data might be equipped.

7. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heatsinks are correctly installed.

8. 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.

9. 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.

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 fieldeffect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

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.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or desolder ES devices.

4. Use only can anti-static type solder removal device. Some solder removal devices not classified as “antistatic” can generate electrical charges sufficient to damage ES device.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. 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.)

7. 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.

8. 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

SERVICING PRECAUTIONS

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.

3. Keep the soldering iron tip clean and well-tinned.

4. Thoroughly clean the surfaces to be soldered. Use a small wire-bristle (0.5 inch or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners.

5. 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 antistatic, suction-type solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the

circuit board printed foil.

6. Use the following soldering technique. a. Allow the soldering 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.

c. 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.

d. Closely inspect the solder area and remove any

excess or splashed solder with a small wire-bristle brush.

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.

2. Draw away the melted solder with an anti-static suctiontype solder 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.

3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to areas.)

“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.

3. Bend into a “U” shape the replacement transistor leads.

4. 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.

Power Output Transistor Devices Removal/Replacements

1. Heat and remove all solder from around the transistor leads.

2. Remove the heatsink mounting screw (if so equipped).

3. Carefully remove the transistor from the circuit board.

4. Insert new transistor in circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heatsink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as possible to diode body.

2. Bend the two remaining leads perpendicularly to the circuit board.

3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. 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.

Use Solding Iron to Pry Leads

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.

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.

3. Solder the connections.

CAUTION: Maintain original spacing between the

replaced component and adjacent components and the circuit board, to prevent excessive component temperatures.

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 “liftoff,” 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 areas 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.

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.

4. 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.

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.

3. 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.

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 power is applied to the instrument.

3. 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

BARE JUMPER WIRE

Install Jumper Wire and Solder

DEFECTIVE COPPER REMOVED

Insulated Jumper Wire

At Other Connections Use the following technique to repair defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

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 1.6KΩ resistor, 0 = 0Ω (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.

Component Removal

1. Use solder wick to remove solder from component end caps or terminals.

2. Without pulling up, carefully twist the component with tweezers to break the adhesive.

3. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal .

Chip Component Installation

1. Put a small amount of solder on the board soldering pads.

2. 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

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.

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.

3. Remove the solder from all of the pads of the Fiat-lC by using a de-solder braid.

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 positions of the soldering pads and pins by correctly aligning the polarity symbol.

6. 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.

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.

Chip Components

TYPE

GRADE

SOLDER CAPS

TRANSISTOR

CAPACITOR

1ST DIGIT

2ND DIGIT

MULTIPLIER = 1600 = 1.6K

ANODES

MH DIODE

RESISTOR

SOLDER CAPS

COMMON CATHODE

De-Solder

Braid

Soldering

Iron

Soldering

Iron

Soldering

Iron

Soldering

Iron

Soldering

Iron

Soldering

Iron

De-Solder

Braid

Flat-IC

Bridge Solder

De-Solder

Braid

Iron

Wire

Pull

Awl

Polarity Symbol

5. Solder all pins to the soldering pads using a fine tipped soldering iron.

High Voltage limiter circuit operation check.

1. Turn off TV and connect jig as shown in Figure 2.

2. Set the AC input to 120V AC and turn on TV.

3. Confirm test pattern on CRT is a usable picture, then slowly adjust jig until the picture disappears and TV shuts down.

4. When the limiter circuit is operating properly, High Voltage will be less than 31.5 kV at 1.7mAwhen TV shuts down.

5. Turn off set immediately after checking circuit operation.

6. Unplug set for one minute to reset shutdown circuit. Remove jig and voltmeter.

TECHNICAL CAUTIONS

(TH01)

Figure 2

Model: 60DX10B 43GX10B

50DX10B 43GX10B

Cathode-Ray Tube:

50GX30B/43GX10B R=P16LM00EURFA

60DX10B/50DX10B G=P16LFM00EUHHA

B=P16LFM00EUBMB

Power Input: 120 volts AC, 60 Hz

Power Consumption: 189 Watts - Maximum

149 Watts - Operating

1.7 Watts - Stand-by

Antenna Impedance: 75 Ohm Unbalanced

VHF / UHF / CATV

Receiving Channel: BAND CH

VHF 2~13

UHF 14~69

EXT. Mid (A-5)~(A-1), 4+

CATV Mid. A~I

CATV Super J~W

CATV Hyper (W+1)~(W+28)

Intermediate Frequency: Picture l-F Carrier 45.75 MHz

Sound l-F Carrier 41.25 MHz

Color Sub Carrier 42.17 MHz

Video Input: 1 Volt p-p, 75 Ohm

1 Volt p-p, 75 Ohm (Y)

0.7 Volt p-p, 75 Ohm, (P

, PR)

Video Output: 1 Volt p-p, 75 ohm

Audio Input: 470 mVrms, 47 k Ohm

Stereo Audio Output: 470 mVrms, 1 k Ohm

Audio Output Power:

Front: 12 watts per channel at 10% distortion,

8 ohm Impedance. Max output Ð 15 watts.

Anode Voltage:

29.5±1.5kv (1.35±0.2mA)

Brightness: 43GX10B 50DX10B 60DX10B

(white screen) 250cd/m

205cd/m

140cd/m

Speakers: 2 Front Speakers

Dimension:

43GX10B 50DX10B/ 60DX10B

50GX30B

Height (in.) 43

52 60

Width (in.) 39 43

Depth (in.) 20 23

Weight (Ibs.) 143 183 233

Circuit Board Assemblies:

C.P.T. (B) P.W.B. Terminal P.W.B.

C.P.T. (G) P.W.B. VM P.W.B.

C.P.T. (R) P.W.B. Power/Deflection P.W.B.

Control P.W.B. Control Sub P.W.B.

Signal P.W.B. Sensor Distribution P.W.B.

Covergence P.W.B. Trusur/SRS/BBE P.W.B.

CIRCUIT PROTECTION

CAUTION: Below is an EXAMPLE only. See Replacement Parts List for details. The following symbol near the fuse

indicates fast operation fuse (to be replaced). Fuse ratings appear within the symbol.

Example:

SPECIFICATIONS

RISK OF FIRE - REPLACE FUSE AS MARKED

The rating of fuse F901 is 5A - 125V. Replace with the same type fuse for continued protection against fire.

5 A 125V

125V

During Insertion

1. Please refer to direction for insertion as shown in Fig. B (L position). Insert connector until “CLICK” sound is heard.

2. Make sure the connector is pressed right in, so that it has a good contact with the spring.

3. Confirm the contact by pulling the connector slightly. (Don’t pull hard because it may damage the connector).

4. Cover the high voltage output by carefully pushing silicon cover onto it. (Don’t turn the connector). (REMARK)

1. Make sure the silicon cover is covering the high voltage output.

CAUTIONS WHEN CONNECTING / DISCONNECTING THE HV CONNECTOR

Perform the following when the HV connector (anode connector) is removed or inserted for CPT replacement, etc.

Deflection P.W.B.

Silicon cover

Wing

L Position

Wing

FBT

Anode connector

3. Remove the connector slowly by pulling it away from the case.

During Removal

1. Roll out silicon cover from FBT’s contact area slowly .

2. While turning the connector about 90 degrees following the arrow (0 position), push the connector slightly towards the case. (Fig. A)

Fig. A

Fig. B

Silicon Cover

less than 1mm

PUSH

DIGITAL ARRAY

POWER

INPUT

EXIT

SELECT

f e b a c

d i j

Push open door and pull forward and down

PUSH

POWER

INPUT

EXIT

VOL+VOL-

CH-

CH+

VOL+VOL-

CH-

CH+

SELECT

DIGITAL ARRAY

POWER

EXIT

SELECT

i j

Push open door and pull forward and down

PUSH

ab d c

INPUT VOL- VOL+ CH- CH+

FEHG

fgh

POWER

EXIT

SELECT

INPUT VOL- VOL+ CH- CH+

FEHG

43GX10B/50GX30B

50DX10B/60DX10B

STOP

CONNECT ONLY 8 OHM SPEAKERS DO NOT SHORT CIRCUIT THESE TERMINALS. (Such damage is NOT COVERED by your television warranty)

SP. MATRIX SURROUND

EXT.

REAR SPEAKER

AUDIO TO HI-FI

VHF/UHF

AUDIO

(MONO)/L

AUDIO

(MONO)/L

AUDIO

(MONO)/L

MONITOR

OUT

INPUT 2

INPUT 1

S-VIDEO

VIDEO

S-VIDEO

VIDEO

AUDIO

INPUT 4

Y/VIDEO

GENERAL INFORMATION

Fig. 3. Front Control Panel

Fig. 4. Rear Panel Jacks

a Antenna Input/Output g Speaker Matrix Surround Switch b Audio/Video Inputs 1, 2 h Rear Speaker Terminals c Monitor Out d Audio to Hi-Fi e S-Video Inputs 1 and 2 f Component Input Y-PBP

USE THE REMOTE TO CONTROL YOUR TV

VOLUME, MUTE buttons

Use these buttons to obtain the desired sound level.

123

456

789

INPUT

STATUS

VOL CH

POWER

TV CBL/SAT DVD/VCR

PIP

SWAP MOVE

FREEZE

HELP

MUTE

EXIT

LAST CH

REC

TV/VCR

PIX

SELECT

PIP CH

SELECT, MENU, CURSOR buttons

Use these buttons to set or adjust all of the On-Screen Display features.

PICTURE-IN-PICTURE

See separate section on pages 23-25 for a detailed description.

HELP button

Press this button to display or cancel the help messages of the On-Screen Display.

CHANNEL SELECTOR buttons

Use these buttons to select the CHANNEL you wish to watch.

INPUT button

Use this button to select the main or sub-picture video source from the antenna or video inputs.

PIP CH button

Use this button to select between main picture and sub-picture tuning.

a TV POWER button

Press this button to turn the TV set On or Off

EXIT button

Use this button to exit all On-Screen Display menus.

LAST CHANNEL (LAST CH) button

Use this button to select between the last two channels viewed.

STATUS button

Press this button to check the channel being received, or if it has Stereo (ST), Second Audio (SAP), and Channel and Video I.D.

PIX button

Press this button repeatedly to directly access THEATER mode between Sport, TV, Movies and Music.

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS

VIDEO

Select VIDEO to adjust picture settings and improve picture quality.

Use this function to change the contrast between black and white levels in the picture. This adjustment will only affect the picture when ADVANCED SETTINGS PERFECT PICTURE is OFF. (see page 48)

Use the CURSOR G or H buttons to highlight the function to be adjusted. Press the CURSOR F or E buttons to adjust the function. Press EXIT to quit menu.

NOTE: ¥ If CONTRAST is selected, you are adjusting CONTRAST. The additional menu items BRIGHTNESS, COLOR, TINT,

and SHARPNESS can be selected and adjusted in the same manner.

¥ Contrast and Brightness adjustments will affect only the main picture. These adjustments will not affect the sub-picture.

Use this function to adjust the level of color in the picture.

Use this function to adjust flesh tones so they appear natural. (It may be necessary to adjust TINT to obtain optimum picture quality when using the COMPONENT VIDEO: Y-PBPRINPUT 4 jacks).

Use this function to adjust overall picture brightness.

Use this function to adjust the amount of fine detail in the picture.

When RESET is selected, press SELECT button to return video adjustments to factory preset conditions.

CONTRAST

COLOR

TINT

BRIGHTNESS

SHARPNESS

RESET

Exit

75%

50% 50%

50%

Exit

Contrast

100%

Exit

Contrast

85%

CUSTOMIZE

SETUP

VIDEO

AUDIO

THEATER

SEL

CUSTOMIZE

SETUP

VIDEO

AUDIO

THEATER

SEL

CUSTOMIZE

SETUP

VIDEO

AUDIO

THEATER

SEL

Cursor

Menu To Menu Bar To Quit

Contrast

Brightness Color Tint Sharpness Reset Advanced Settings

Menu To Menu Bar To Quit Menu To Menu Bar To Quit

Cursor

Select AUDIO SETTINGS to adjust the TV to your preference and to improve the sound quality.

This function controls the low frequency audio to all speakers.

Use CURSOR G or H to highlight the function to be adjusted. Press CURSOR F or E to adjust the function. Press EXIT to quit MENU.

NOTE: If BASS is selected you are adjusting BASS. The additional menu items TREBLE and BALANCE can be selected and

adjusted in the same manner.

This function controls the high frequency audio to all speakers.

This function will control the left to right balance of the TV internal speakers and the AUDIO TO HI FI output.

When RESET is selected, press SELECT to return audio adjustments to factory preset conditions.

AUDIO

BASS

BALANCE

RESET

TREBLE

ExitExit

90%

50%

BASS

TREBLE BALANCE RESET ADVANCED SETTINGS

50%

SELECT

CUSTOMIZE

SETUP

VIDEO

AUDIO

THEATER

SEL

CUSTOMIZE

SETUP

VIDEO

AUDIO

THEATER

SEL

Cursor

Menu To Menu Bar To QuitMenu To Menu Bar To Quit

BASS

TREBLE BALANCE RESET ADVANCED SETTINGS

Use the number buttons to select which point to adjust: - Upper Left, - Upper Middle, - Upper Right, - Center Left,

- Center, - Center Right, - Bottom Left, - Bottom Middle, - Bottom Right.

Press the CURSOR buttons to move the displayed color up, down, left, or right. Press MENU to change the color you want to adjust. Press the front panel DIGITALARRAY button or the remote control MOVE button when adjustment is done. This will save your

adjustment into memory.

CURSOR

Your HITACHI Projection TV has three color projection tubes: one for red, one for green, one for blue. When mixed together in the proper proportion, the output of these three color tubes can produce any color. To produce these colors, however, the beams must be precisely aligned over each other so that the colors can be mixed. The process of aligning these picture beams is called ÒconvergenceÓ.

Over a period of time, the picture tubes can drift out of alignment due to normal bumps and vibrations or moving the TV. If you move your TV, or if, after a time, you notice color rings or halos around objects in the picture, you may want to converge (align) the colors.

Properly converged, the lines appear white, which is actually a combination of the outputs of the three color tubes. The output of the green tube is stationary. The outputs of the red and blue tubes can be adjusted. When properly aligned, the outputs of all three tubes should be directly over each other to produce the white lines.

To simplify convergence, HITACHI incorporates a feature to allow you to display a test pattern of horizontal and vertical lines at 9 different locations on the screen. Simply use the remote control to adjust the red and blue colors to match the green. When properly aligned, the outputs of all three tubes should be directly over each other to produce the white lines.

To enter this adjustment mode, you may also select DIGITAL ARRAY from the Set Up menu. However, this will display a message prompting you to press the front panel DIGITAL ARRAY button.

NOTE: Only a momentary press of the DIGITAL ARRAY button is necessary to enter DIGITAL ARRAY convergence adjustment

mode.

Do not press the DIGITALARRAY button for more than three seconds. This is only for extreme cases of misconvergence and requires assistance from service.

Four lines surrounding a crosshatch indicate the point being adjusted. The color of these surrounding lines indicates the color being adjusted.

To save your adjustment data into memory, press the front panel DIGITAL ARRAY button or the remote control MOVE Button. If you do NOT wish to save your adjustment data into memory, turn the TV OFF or press the remote control PIP button. When the TV is turned ON again, your old convergence data will be restored.

When adjusting convergence, always start at the center of the screen.

DIGITAL ARRAY

5 6

7 8

1 ~ 9

DIGITAL

ARRAY

Red

Blue

DIGITAL

Blue

ARRAY

REAR PANEL CONNECTIONS

Typical full feature setup. Follow connections that pertain to your personal entertainment system.

STOP

CONNECT ONLY 8 OHM SPEAKERS DO NOT SHORT CIRCUIT THESE TERMINALS. (Such damage is NOT COVERED by your television warranty)

SP. MATRIX SURROUND

EXT.

REAR SPEAKER

AUDIO TO HI-FI

AUDIO

(MONO)/L

AUDIO

(MONO)/L

AUDIO

(MONO)/L

OUTPUT

Y P P

L R

DVD Player, Laserdisc player, etc.

INPUT

Stereo System Amplifier

2-Way signal splitter

INPUT

V L R

VCR #2VCR #2

Outside antenna or cable TV coaxial cable

Cable TV Box

OUTPUT

INPUT

VCR #1

OUTPUT

V L R

S-VHS

ANT

MONITOR

OUT

INPUT 2

INPUT 1

S-VIDEO

VIDEO

S-VIDEO

VIDEO

AUDIO

INPUT 4

Y/VIDEO

VHF/UHF

SERVICE ADJUSTMENTS

1. ASSEMBLED P.W.B ADJUSTMENT..................................................................................................................20

1-1. Memory Initialization (NTSC, SDTV and HDTV) ....................................................................................20

1-2. Comb Filter Operation Check ................................................................................................................25

1-3. Scanning Area Check ............................................................................................................................25

2-0. Final Assembly Adjustment ....................................................................................................................26

2-1. Graphic Equalizer Operation Check ................................................................................................34

2-2. Perfect Volume Operation Check ....................................................................................................34

2-3. Dynamic Bass Operation Check......................................................................................................34

2-4. Input Source Operation Check ........................................................................................................35

2-5. Surround Mode Operation Check....................................................................................................35

2-6. Speaker Setup Operation Check ....................................................................................................37

1-4. High Voltage Adjustment ........................................................................................................................39

2. FINAL ASSEMBLY ADJUSTMENT (Adjustment should be according to below order) ..............................26

2-1. Cut Off ....................................................................................................................................................26

2-2. Raster Inclination Adjustment (Deflection Yoke) ....................................................................................26

2-3. Horizontal AFC Adjustment ....................................................................................................................26

2-4. Lens Focus Adjustment ..........................................................................................................................27

2-5. Static Focus Adjustment ........................................................................................................................28

2-6. Raster Position........................................................................................................................................29

2-7. Vertical Size ..........................................................................................................................................29

2-8. Horizontal Size ......................................................................................................................................29

2-9. Beam Shape ..........................................................................................................................................30

2-10. Static Focus ............................................................................................................................................30

2-11. Blue Focus ..............................................................................................................................................30

2-12. Digital Convergence................................................................................................................................30

2-12-1. Phase Adjustment ......................................................................................................................31

2-12-2. Raster Position ..........................................................................................................................32

2-12-3. Convergence Point ....................................................................................................................32

2-12-4. Digital Convergence Remote Control ........................................................................................32

2-13. Sub-Brightness........................................................................................................................................33

2-14. White Balance ........................................................................................................................................33

2-15. Sub-Picture Adjustment ..........................................................................................................................33

2-16. Sub-Picture Black Level Check ..............................................................................................................33

2-17. Sub-Picture White Balance ....................................................................................................................33

2-18. Sub-Picture Position................................................................................................................................34

3.0 ADJUSTMENT LOCATIONS............................................................................................................................35

3-1. CRT (R)(G)(B), Cabinet Locations..........................................................................................................35

3-2. Main Chassis (Signal P.W.B.) ................................................................................................................36

3-3. Main Chassis (Power/Deflection P.W.B.) ................................................................................................37

3-4. Convergence P.W.B. ..............................................................................................................................38

1. ASSEMBLED P.W.B. ADJUSTMENT

1.1 Memory Initialization

Adjustment Procedure

(1) Press INPUT key on

Control Panel and then Power On to access adjustment

mode. (2) Receive signal on main picture. (3) Check the OSD according to

table below, using G,H buttons

on Remote Control. (4) Press EXIT key to exit I

C ADJUST mode. NOTE: 1. If there is a

different value than shown in the table above, for fixed data, adjust it using F E buttons (only in this case).

2. When exchanging microprocessor and TV is turned on for first time. It requires initialization of MEMORY INITIALIZE.

1.3 Sub-Picture (PIP) position adjustment Adjustment Preparation (1) Select signal on main picture. (2) Video settings have to be

at normal condition.

Adjustment Procedure (1) Press the INPUT and

POWER button on Control Panel at same time to acces VIDEO CHROMA ADJUST mode.

(2) Select HP POSI (Single) and

VP POSI (Single) using H G buttons.

(3) Adjust the HP POSI (Single)

(HORIZONTAL) and VP POSI (Single) (VERTICAL) position using F E buttons.

(4) Press EXIT button to exit I

ADJUST mode.

(5) Select single PINP mode and

move the sub picture, using the MOVE button. Distance between PINP and edge of screen should be equal when moved. If it is not, repeat (1)~(5).

B CUT 3F

G CUT 3F

R CUT 3F

G DRV 3F

ADJUST MODE

SERVICE

SUB BRT*

WHITE BAL

R DRV (COOL)* 48

B DRV (COOL)* 37

R CUTOFF (COOL)* 80

G CUTOFF (COOL)* 80

B CUTOFF (COOL)* 80

H POSITION* 12

V POSITION* 00

FACT RESET

CH U/D, INPUT

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (COOL) 48

B DRV (COOL) 37

R CUTOFF (COOL) 80

G CUTOFF (COOL) 80

B CUTOFF (COOL) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

Select SERVICE

and press E key

Press EXIT key

(OSD OFF)

CUT OFF ADJUST MODE

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (COOL) 48

B DRV (COOL) 37

R CUTOFF (COOL) 80

G CUTOFF (COOL) 80

B CUTOFF (COOL) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

Select SERVICE

and press E key

Press EXIT key

R DRV 3F

MACRO

Select SERVICE

and press E key

Press EXIT key

SUB BRT 80

Press Adjust

MACRO

VIDEO SETTINGS

(1) CONTRAST : MIN

(2) COLOR : MIN

VIDEO SETTINGS

(1) CONTRAST : MAX

(2 ) COLOR,TINT,SHARP,BRIGHT:CENER

(3) COLOR TEMP : COOL

ADJUST

(1) Press E to select the R DRV.,

G DRV., R CUT, G CUT, B CUT.

(2) Press E to adjust.

WHITE BALANCE

ADJ. MODE

POWER + INPUT

Adjust in cool

mode only.

Adjust in cool

mode only.

Adjust in cool

mode only.

*: Adjustable data

others: Fixed data (be careful not to change)

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (COOL) 48

B DRV (COOL) 37

R CUTOFF (COOL) 80

G CUTOFF (COOL) 80

B CUTOFF (COOL) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (COOL) 48

B DRV (COOL) 37

R CUTOFF (COOL) 80

G CUTOFF (COOL) 80

B CUTOFF (COOL) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

SELECT

Adjust in cool

mode only.

Cursor E to

adjust.

Press EXIT to

exit white

balance mode.

Adjust in cool

mode only.

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (WARM) 48

B DRV (WARM) 37

R CUTOFF (WARM) 80

G CUTOFF (WARM) 80

B CUTOFF (WARM) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

Do not adjust WHITE BALANCE in

WARM or NTSC mode. Adjust in

COOL mode only.

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (NTSC) 48

B DRV (NTSC) 37

R CUTOFF (NTSC) 80

G CUTOFF (NTSC) 80

B CUTOFF (NTSC) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

Adjust in cool

mode only.

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (WARM) 48

B DRV (WARM) 37

R CUTOFF (WARM) 80

G CUTOFF (WARM) 80

B CUTOFF (WARM) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

Adjust in cool

mode only.

SELECT

ADJUST MODE

SERVICE

SUB BRT

WHITE BAL

R DRV (NTSC) 48

B DRV (NTSC) 37

R CUTOFF (NTSC) 80

G CUTOFF (NTSC) 80

B CUTOFF (NTSC) 80

H POSITION 12

V POSITION 00

FACT RESET

CH U/D, INPUT

Adjust in cool

mode only.

SELECT

H POSITION ADJ. MODE

Press FE to adjust

V POSITION ADJ. MODE

Press FE to adjust

Press E to set to

Factory settings

ADJUST MODE

PIP WHITE BAL

PIP R (COOL)* 2C

PIP G (COOL)* 2C

PIP B (COOL)* 2C

CH U/D, INPUT

Select PIP WHITE BAL.

and press E key

Press EXIT key

SELECT

MACRO

Adjust in cool

mode only.

PIP B 3F

PIP G 3F

PIP R 3F

ADJUST MODE

PIP WHITE BAL

PIP R (WARM) 2C

PIP G (WARM) 2C

PIP B (WARM) 2C

CH U/D, INPUT

Do not adjust PIP WHITE BALANCE

in WARM or NTSC mode. Adjust in

COOL mode only.

ADJUST MODE

PIP WHITE BAL

PIP R (NTSC) 2C

PIP G (NTSC) 2C

PIP B (NTSC) 2C

CH U/D, INPUT

SELECT

ADJUST MODE

VCJ RESET

3DYC RESET

PIP RESET

BBE RESET

MEMORY INIT

I2COPEN

CH U/D, INPUT

Item Device

VCJ TA1222BN

3DYC uPD64082

PIP SDA9589

BBE NJW1132

ADJUST MODE

TA1222 (RF)

SUB CONT 1F

SUB COLOR 40

SUB TINT 40

SUB SHARP 38

TOP FO 00

TOF Q 00

COLOR SYS 00

R-Y PHASE 03

R/B LEVEL 00

G/B LEVEL 00

CH U/D, INPUT

ADJUST MODE

TA1222 (RF)

RGB BRIGHT 40

RGB CONT 60

H BLK PHAS 00

V BLK PHAS 00

GPPHS 01

CH U/D, INPUT

ADJUST MODE

TA1222 (VIDEO)

SUB CONT 1F

SUB COLOR 1A

SUB TINT 40

SUB SHARP 38

TOP FO 00

TOF Q 00

COLOR SYS 00

R-Y PHASE 03

R/B LEVEL 00

G/B LEVEL 00

CH U/D, INPUT

ADJUST MODE

TA1222 (480I)

SUB CONT 1F

SUB COLOR 1A

SUB TINT 40

SUB SHARP 38

TOP FO 00

TOF Q 00

COLOR SYS 00

R-Y PHASE 03

R/B LEVEL 00

G/B LEVEL 00

CH U/D, INPUT

ADJUST MODE

TA1222

YG 00

Y DL 00

TXACL 01

COLOR G 00

CLT 00

CDE 01

C TRAP 00

DC POINT 00

DCRATIO 00

CH U/D, INPUT

SELECT

ADJUST MODE

TA1222

DC LIMIT 00

BEP LIMIT 00

BEP POINT1 05

BEP POINT2 00

B.L.S. 00

B.L.C. 01

B.S.G. 00

B.D.L. 00

BSARE 00

WPDL 01

CH U/D, INPUT

ADJUST MODE

TA1222 (480I)

S-TRCK 01

AP PEAK F0 00

STR-MD 00

CH U/D, INPUT

ADJUST MODE

TA1222

HI BRT 01

OS ACL 00

OSD-SL 01

WHITE PEAK 00

DABL POINT 00

D ABLE GAIN 07

ABL POINT 05

ABL GAIN 07

COLOR GAIN 15

CH U/D, INPUT

SELECT

ADJUST MODE

uPD64082

DY GAIN 09

DC GAIN 06

YC VAPINV 0B

YC VAPGAIN 05

YHCOR 00

CH U/D, INPUT

ADJUST MODE

SDA9589-2

CONTRAST 0F

BRIGHT 00

LM OFFSET 00

YPEAK 03

YCDEL 00

SELDEL 0F

COLOR SUB 10

V OFSET 00

H OFSET 00

CH U/D, INPUT

ADJUST MODE

SDA9589-2

COLOR SAT (NTSC) 08

HUE (NTSC) 20

ITCPLL (RF) 02

NRIPLL (RF) 02

HFPOSI (SINGLE) 00

VFPOSI (SINGLE) 0F

H P POSI (SINGLE) 37

V P POSI (SINGLE) 18

CH U/D, INPUT

SELECT

ADJUST MODE

SDA9589-2

COLOR SAT (480I) 08

HUE (480I) 20

ITCPLL (VIDEO) 02

NRIPLL (VIDEO) 00

HFPOSI (MV4) 00

VFPOSI (MV4) 0A

H P POSI (MV4) 27

V P POSI (MV4) 0C

CH U/D, INPUT

NJW1132

BBE HIGH 07

BBE LOW 07

V CHIP RATING

POLLING 0F

TIMEOUT 05

STATUS 02

AFC/CLOCK TEST

OSD H POSI **

OSD V POSI **

CH U/D, INPUT

32ms*POLLING DATA

FROM RATING OFF

DETECTIVE COUNT

SELF-DIAGNOSIS

RESET START 00

REMOTE POWER 00

MATRIX POWER 00

REMOTE MEM INIT 00

MATRIX MEM INIT 00

ADJUST MEM INIT 00

ADJUST FAC RESET 00

EEP READ ERROR 00

EEP WRITE ERROR 00

LAST EVENT 0000

CH U/D, INPUT

1.2 Comb filter operation check

Adjustment preparation (1) Receive the color bar signal at the regular tuning

point.

(2) Set the CONTRAST control to MAX and the

other controls to center.

(3) Set the PERFECT PICTURE to OFF. Adjustment procedure

(1) Check that between the color bars there are line

dots every second color bar as shown in the drawing.

A A

LINE DOT

AX BX

Check and line dots.

Item Symbol 43Ó 50Ó 60Ó

Top/Bottom pincushion distortion A,B ±5 ±6 ±6

Right/Left pincushion distortion C,D ±4 ±4 ±5

Center line Vertical line E 5 6 6

tilt Horizontal line F 5 6 6

Center line Vertical line G ±3 ±3 ±4

winding Horizontal line H ±3 ±3 ±4

Trapezoidal distortion Vertical line I,J 4 5 5

Skew distortion Horizontal line K,L 5 6 6

(unit: mm)

1.3 Scanning Area Check

Checking Condition (1) Digital convergence adjustment should have been

completed. (2) Receive the circle pattern signal. (3) Brightness/Contrast - Standard condition

Contrast: Max

Other Controls: Center position (4) Check that the scanning area matches with the next

drawing.

1.3 Raster Distortion Check

Checking Condition (1) Digital convergence adjustment should have been

completed. (2) Receive the cross-hatch signal. (3) Brightness/Contrast - Standard condition

Contrast: Max

Other Controls: Center position (4) Check the raster distortion.

Specification: Value shown in the table below or

less.

A~D

I~L

- Measure the winding of the outside line.

2. FINAL ASSEMBLY ADJUSTMENT

2.1 Cut Off Adjustment

Adjustment preparation (1) Set R and G drive VRÕs on CPT P.W.B. to center. (2) Adjust screen VRÕs on Focus Pack fully

counterclockwise.

(3) Adjust Focus VRÕs on Focus Pack fully

clockwise. (4) Set video conditions to factory preset. (5) The vertical incident illumination on the screen

should be 20 lux or less (room should be dark).

Adjustment procedure (1) Press and hold INPUT key on control panel and

then POWER ON to access I

C adjustment

mode. (2) Choose “SERVICE” item from I

C adjustment

menu by pressing CURSOR E. (3) Screen VR should be turned clockwise gradually

and set so that retrace line begins to appear. (4) Return to “NORMAL” mode by pressing the

EXIT button. (5) The blue line should be lighter thatn red and/or

green. (6) Adjust Focus VR’s so that focus is even all

around screen.

FOCUS PACK

2.2 Raster Inclination adjustment (Deflection

Yoke)

Adjustment preparation (1) The set can face east or west. (2) Input the single cross test signal. (3) Set video conditions to factory reset. (4) The lens focus adjustment should have been

completed. (5) The electric focus should have been coarse

adjusted. (6) The digital convergence RAM should be cleared

(uncorrected state). With the TV set off, press

and hold the service switch located on the

Power/Deflection PWB and then press the

power button. (7) Start adjustment 20 minutes or more after TV is

turned on

Adjustment procedure (1) Apply covers to the R and B lenses and project

only green light.

(2) Turn the G deflection yoke and adjust the vertical

raster inclination.

(3) Then, remove the cover of R or B lens and project

red or blue light and green light together on the screen.

(4) Turn the deflection yoke of R or B and set so that

the inclination of R or B with respect to the green light is as shown below on the top and bottom sides.

(5) After raster inclination adjustment, fixing screw

of DY should be screwed with 12±2kg-cm torque.

2.3 Horizontal AFC Adjustment

Adjustment preparation (1) Face the set East or West. (2) Display the circle pattern signal. (3) Contrast: Max, Brightness: Center. (4) The electrical focus should have been coarse-

adjusted.

(5) The convergence should be in un-corrected

state. Method of no correction state: Turn power off and press POWER button and DIGITAL CONV. SERVICE ONLY button at the same time. Then convergence is in correction.

NOTE: DIGITAL CONV. SERVICE ONLY button: on the CONVER/FOCUS P.W.B.

Adjustment procedure (1) Project only G on the screen using any one of

the following procedures. (a) Apply covers to the R and B lenses, or (b) Short-circuit 2P sub mini connectors of the

R and B CPT P.W.B.

(2) Set the VR of horizontal adjustment R603

counter clockwise, and set the H size minimum.

(3) Check as shown below.

The “0” marker of circle pattern is visible.

NOTE: In the case of inability to see “0” marker, turn

the horizontal size adjustment VR at clockwise until the marker is visible.

Static Focus VR

Screen VR

Focus VR

Screen VR

, 2 £ ± 2mm

£ ±2 m m

Notes: (1) If internal cross-hatch does not appear after

clearing RAM data, press service switch again, on POWER/DEFLECTION PWB.

(2) To restore old RAM data, turn TV off and on.

CROSSHATCH (GREEN)

2.4 LENS FOCUS ADJUSTMENT

Adjustment preparation (1) The orientation of PTV set is arbitrary, west,

east, north and south.

(2) Centering DY inclination should have been

adjusted.

(3) FOCUS VR location adjustment should have

been completed. (Red : 12 OÕclock, Green : 1~2

OÕclock). (4) Receive the cross-hatch pattern signal. (5) Refer to setup below.

CONTRAST : HALF of full scale.

BRIGHTNESS : minimum

Adjustment procedure (1) Loosen the fixing screw or wing nut on the lens

cylinder so that the lens cylinder can be turned.

(Be careful not to loosen too much). After

completing steps (4), (5), (6) below, tighten the

fixing screws or wing nuts for each lens with a

torque of 1.18N.m (12Kgf cm) ~ 1.67N.m (17Kgf

cm).

(Be careful the lens cylinder does not turn after

having tightened the screw or wing nuts. If it is

tightened too much, lens may tilt or screw may

break.)

(2) Apply covers to each color of R, G and B lenses.

And project a single color on the screen and

adjust in sequence. (The adjustment order of R,

G and B is only an example.) (3) If the lens adjustment knob is turned clockwise

viewed from the front, the color Aberration

change as follows.

123

(NOTE 1)

Fixing Screw

(NOTE 2)

Fixing Wing Nut

TYPE 1 TYPE 2

Lens Assy

(4) In case of G lens. Set to the point where the

chromatic aberration switches from blue to red. If the chromatic aberration appearing all over the screen is not the same, observe the vertical bright line and adjust lens focus as specified in table below. When the red chromatic aberration appearing at both sides of the bright line is not equal, observe the side with larger chromatic aberration when adjusting.

Color

Aberration

Cross-Hatch

Change of Color Aberration

Short focus Long focus

RED LENS Orange Scarlet

GREEN LENS Blue Red

BLUE LENS Purple Green

Change the signal to the circle pattern and fine adjust. Observe the corner part of the screen, especially observe number in the small circle when adjusting. If the focus performance at the screen center exceeds the lower limit, it is acceptable.

Small circle of circle pattern

CHASSIS 43GX10B/50GX10B 50DX10B/60DX10B

SCREEN SIZE 43Ó 50Ó 60Ó 50Ó

L1 and L2

(PITCHES from CENTER) 3.0 3.0 3.0 3.0

L1&L2 * * * *

COLOR * * * *

ABERRATION I 2mm MAX 3mm MAX 3mm MAX 3mm MAX

*******

O 2mm MAX 3mm MAX 3mm MAX 3mm MAX

(NOTE) * Slightly reddish or no color

** Slightly reddish or no color

OPTICAL FOCUSING ADJUSTMENT GREEN

There is no picture fold.

(5) In case of R lens. Set the position where the

chromatic aberration changes from red to

crimson. As shown below, observe the vertical

bright line and adjust lens focus where the

crimson or red chromatic aberration slightly

appears inside and crimson or red outside

(reference value : 1~3mm) at the point specified

in table below. Change the signal and fine-

adjust in the same way as the G lens.

NOTE: Setting the center between Red and crimson

is optimum.

(6) In case of B lens. Set the position where the

chromatic aberration changes from purple to

green. As shown below, observe the vertical

bright line and adjust lens focus where the

purple or green chromatic aberration slightly

appears inside and purple or green outside

(reference value : 1~3mm) at the point specified

in table below. Change the signal and fine-

adjust in the same way as the G lens.

NOTE: Setting to the center between purple and

crimson is optimum.

Adjustment Procedure (7) After all colors have been adjusted, display all

colors with the cross-hatch pattern signal and compare the focus (optical focus) performance with the limit sample set.

(8) Then, select the circle pattern signal and

compare the focus (optical focus) performance of each color and all colors together with the limit sample set.

(9) If the focus performance is worse than the limit

sample set, re-adjust step (1) to (6).

CHASSIS 43GX10B/50GX10B 50DX10B/60DX10B

SCREEN SIZE 43Ó 50Ó 60Ó 50Ó

L1 and L2

(PITCHES from CENTER) 3.0 3.0 3.0 3.0

L1&L2 * * ** **

COLOR * * ** **

ABERRATION I 2mm MAX 3mm MAX 3mm MAX 3mm MAX

** ** * *

O 2mm MAX 3mm MAX 3mm MAX 3mm MAX

(NOTE) * Slightly reddish or no color

** Slightly reddish or no color

CHASSIS 43GX10B/50GX10B 50DX10B/60DX10B

SCREEN SIZE 43Ó 50Ó 60Ó 50Ó

L1 and L2

(PITCHES from CENTER) 3.0 3.0 3.0 3.0

L1&L2 * * ** **

COLOR * * ** **

ABERRATION I 2mm MAX 3mm MAX 3mm MAX 2mm MAX

** ** * *

O 2mm MAX 3mm MAX 2mm MAX 2mm MAX

(NOTE) * Slightly reddish or no color

** Slightly reddish or no color

OPTICAL FOCUSING ADJUSTMENT RED

OPTICAL FOCUSING ADJUSTMENT BLUE

NOTES: 1. Since the G light is very important for

picture quality and performance, pay special attention in its adjustment.

2. Be careful not to touch the lens with your fingers when adjusting.

2.5 STATIC FOCUS ADJUSTMENT

Adjustment preparation (1) LENS FOCUS adjustment should be finished. (2) Contrast : MAX

Brightness : Center. (3) Receive the circle pattern signal. (4) Apply covers to the lens of the colors you are

not adjusting and project only one color on the

screen.

Adjustment procedure (1) Red and blue static focus adjustment. Adjust

the static focus VR on Focus pack (UFPK) so

that the center of circle pattern is the most clear.

Check that the focus does not get

conspicuously worse at the edges of the circle

pattern signal or cross-hatch signal. (2) Green static focus adjustment. Adjust the static

focus VR on Focus pack (UFPK) (for green) so

that the center of circle pattern is the most clear.

Check that the focus does not get

conspicuously worse at the checking point, the

periphery of circle pattern cross-hatch signal.

NOTE: Checking point for the periphery of picture.

Checking point

Size

60”

50”

43”

2.6 Raster position adjustment

Adjustment preparation (1) The set can face east or west. (2) Input the single cross test signal. (3) Set video conditions to factory reset. (4) The lens focus adjustment should have been

completed.

(5) The electric focus should have been coarse

adjusted.

(6) The digital convergence RAM should be cleared

(uncorrected state). With the TV set off, press and hold the service switch located on the CONVERGENCE PWB and then press the power button.

(7) Start adjustment 20 minutes or more after TV is

turned on.

Adjustment procedure (1) Turn the centering magnets for red, green, and

blue to satisfy the condition below. The red and blue horizontal lines should match with green.

Geometric center of the screen

2.7 Vertical size adjustment (R630)

Adjustment preparation (1) The set can face east or west. (2) Input the single cross test signal. (3) Set video conditions to factory reset. (4) The lens focus adjustment should have been

completed.

(5) The electric focus should have been coarse

adjusted.

(6) The digital convergence RAM should be cleared

(uncorrected state) . With the TV set off, press and hold the service switch located on the CONVERGENCE PWB and then press the power button.

(7) Start adjustment 20 minutes or more after TV is

turned on.

NOTES: (1) If internal cross-hatch does not appear after

clearing RAM data, press service switch again.

(2) To restore old RAM data, turn TV off and on.

Size

60” 800 ± 5mm 50” 650 ± 5mm 43” 580 ± 5mm

Note: (1) If internal cross-hatch does not appear after

clearing RAM data, press service switch again (on POWER/DEFLECTION PWB).

(2) To restore old RAM data, turn TV off and on.

1± 2mm

(RED) (BLUE)

10mm 40mm 10mm 30mm 10mm 30mm

Adjustment procedure (1) Turn only the green by applying covers to the

red and blue lens or shorting the 2 pin TS connectors on the red and blue CPT P.W.B.

(2) Count the vertical lines of the DCU cross hatch.

If the number of vertical lines is 9, go to step (3). If the number of vertical lines is 8, push “HELP” key and then “5” key on the R/C so the number of vertical lines becomes “9”.

(3) Turn vertical amplitude adjustment VR (R630)

so that the distance between the top and bottom horizontal lines is equal to the size shown in the table.

2.8 Horizontal size adjustment (R603)

Adjustment preparation (1) The set can face east or west. (2) Input the single cross test signal. (3) Set video conditions to factory reset. (4) The lens focus adjustment should have been

completed.

(5) The electric focus should have been coarse

adjusted.

(6) The digital convergence RAM should be cleared

(uncorrected state). With the TV set off, press and hold the service switch located on the CONVERGENCE PWB and then press the power button.

(7) Start adjustment 20 minutes or more after TV is

turned on.

Adjustment procedure (1) Project only green, the same as Vertical size

adjustment.

(2) Turn horizontal amplitude adjustment VR (R603)

so distance between the left and right vertical lines is equal to the size shown in the table.

Note: (1) If internal cross-hatch does not appear after

clearing RAM data, press service switch again.

(2) To restore old RAM data, turn TV off and on.

Size

60” 1140 ± 5mm 50” 950 ± 5mm 43” 830 ± 5mm

2.9 Beam shape adjustment

Adjustment preparation (1) The beam alignment should have been

completed.

(2) The raster inclination, centering, horizontal/

vertical amplitude and optical focus adjustments

should have been completed. (3) Set video conditions to factory reset. (4) Input the dot signal.

Adjustment procedure (1) Green PRT beam shape adjustment. Short-

circuit 2P sub-mini connectors on Red and Blue

CPT P.W.B.s to project only the Green beam. (2) Turn the green static focus fully clockwise.

(Blooming.) (3) Make the dot at the screen center a true circle

using the 4-pole magnet as shown below. (4) Also adjust the Red and Blue PRT beam shapes

according to the steps (1) to (3). (5) After the adjustment has been completed, return

R, G and B static VRs to the just focus point.

2.10 Static focus adjustment

Adjustment preparation (1) The raster inclination, centering, horizontal/

vertical amplitude and optical/electrical focus

beam alignment should have been adjusted. (2) The static convergence data should be cleared. (3) Set video conditions to factory reset. (4) Receive the cross-hatch pattern signal. (5) Apply covers to the lenses of colors other than

the color to be adjusted and project a single

color. Adjustment procedure

(1) Red (R), Green (G) and Blue (B) static focus

adjustment. V ary the static focus VR (focus pack

UFPK) and make the center of the cross-hatch

pattern clearest. (2) Observe the corners of the picture and check

that the focus does not get conspicuously worse.

TRUE CIRCLE SPECIFICATION

TRUE CIRCLE DEGREE:

a/b SPECIFICATION:

PRT SURFACE SIDE

4-POLE BEAM

SHAPE

CORRECTION

2-POLE BEAM

ZERO FIELD SPACER (NO ADJUSTMEN

OBSERVING POINTS OF THE

CORNER OF THE PICTURE

OBSERVING POINTS

2.11 Blue defocus adjustment

Adjustment Preparation (1) Optical and electrical focus adjustment should

have been completed.

(2) The convergence adjustment should have been

completed.

(3) Set Video conditions to factory reset. Adjustment procedure

(1) Input an all-white signal shown below to VIDEO

input.

(2) Short-circuit 2P sub-mini connectors on the red

and green CPT P.W.Bs. to display only the blue beam.

(3) Turn the B Focus VR (Focus Pack) fully

clockwise.

(4) Measure the brightness at the center of the

screen and turn the B FOCUS VR (Focus Pack) counterclockwise to adjust the brightness of blue as shown in Table.

(5) After the adjustment is completed, if blue

exceeds the specification, turn and adjust focus so that the sticking out part of blue satisfies the specification.

ALL-WHITE SIGNAL WAVEFORM

TERMINATION CONDITION: OPEN

STICKING OUT OF BLUE

=1mm

Condition: User controls are set to the initial set

positions (for shipment) Measuring point Screen center.

Cautions: Correct the brightness gauge and amplitude

of the all-white signal periodically. The aperture angle of the brightness gauge is 1°.

Use a cross-hatch pattern to check.

2.12 Digital convergence adjustment

Adjustment preparation (1) Receive an RF or video signal. (2) Set controls to factory preset. (3) Install jig screen on the set. (4) Note the center of the video pattern displayed.

This is necessary to match dotted lines (adjustment point viewed) and actual point that is adjusted and displayed by the video signal.

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