Text preview for : DT1300-CSM.pdf part of Disney DT1300-C (P) (A) Service Manual - 13'' color television
Back to : DT1300-CSM.part1.rar | Home SERVICE MANUAL 13" COLOR TELEVISION DT1300-C/DT1300-P/DT1300-A IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommended by Funai and de- scribed in this service manual are effective methods of performing service operations. Some of these service special tools should be used when and as recommended. It is important to note that this service manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It also is important to under- stand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Funai could not possibly know, evaluate and advice the service trade of all con- ceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, Funai has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service proce- dure or tool which is not recommended by Funai must first use all precau- tions thoroughly so that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected. TABLE OF CONTENTS Specifications ........................................................ 1-1 CBA Views and Test Points................................. 7-11 Important Safety Precautions................................ 2-1 Wave Forms .......................................................... 8-1 Standard Notes for Servicing ................................ 3-1 Wiring Diagram...................................................... 9-1 Disassembly Instructions ...................................... 4-1 IC Pin Function .................................................... 10-1 Electrical Adjustment Instructions ......................... 5-1 Cabinet Exploded View ....................................... 11-1 Block Diagram....................................................... 6-1 Packing Exploded View ....................................... 11-3 Schematic Diagram / CBA's and Test Points........ 7-1 Mechanical Parts List .......................................... 12-1 Schematic Diagram............................................... 7-3 Electrical Parts List .............................................. 13-1 SPECIFICATIONS ANT. Input ------------------- 75ohm Unbal., F type Reference Level------------20Vp-p (CRT Green Cathode) Test Input Signal -----------400Hz 30% modulation Description Condition Unit Nominal Limit 1. Intermediate Freq. Picture MHz 45.75 - Sound MHz 41.25 - 2. Peak Picture Sens VHF dBµv 15 30 CATV dBµv 15 30 UHF dBµv 15 40 3. AFT Pull In Range - MHz ±2.0 ±0.7 (10mV input) Description Condition Unit Nominal Limit 1. Deflection Freq. Horizontal KHz 15.734 - Vertical Hz 60 - 2. Linearity Horizontal % - ±15 Vertical % - ±10 3. Over Scan - % 10 - 4. High Voltage - KV 23 - Description Condition Unit Nominal Limit 1. Misconvergence Center mm - 0.3 Side mm - 1.2 Corner mm - 1.5 2. Brightness APL 100% Ft-L 60 40 3. Color Temperature - °K 9200°K - 4. Resolution Horizontal Line 250 - Vertical Line 300 - All items are measured across 8 load at speaker output terminal. Description Condition Unit Nominal Limit 1. Audio Output Power 10% THD W 1 0.8 2. Audio Distortion (w/LPF) 500mW % 2 7 3. Audio Freq. Response -3dB Hz 100~11K - Note: Nominal specifications represent the design specifications. All units should be able to approximate these. Some will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications. 1-1 L6015SP IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. Safety Precautions for TV Circuit age current tester or a metering system that com- plies with American National Standards Institute 1. Before returning an instrument to the custom- (ANSI) C101.1 Leakage Current for Appliances er, always make a safety check of the entire instru- and Underwriters Laboratories (UL) 1410, (50.7). ment, including, but not limited to, the following With the instrument AC switch first in the on posi- items: tion and then in the off position, measure from a a. Be sure that no built-in protective devices are de- known earth ground (metal water pipe, conduit, fective and have been defeated during servicing. etc.) to all exposed metal parts of the instrument (1) Protective shields are provided on this chassis (antennas, handle brackets, metal cabinet, screw to protect both the technician and the customer. heads, metallic overlays, control shafts, etc.), es- Correctly replace all missing protective shields, in- pecially any exposed metal parts that offer an elec- cluding any removed for servicing convenience. trical return path to the chassis. Any current (2) When reinstalling the chassis and/or other as- measured must not exceed 0.5 milli-ampere. Re- sembly in the cabinet, be sure to put back in place verse the instrument power cord plug in the outlet all protective devices, including but not limited to, and repeat the test. nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and READING SHOULD isolation resistor/capacitor networks. Do not oper- NOT BE ABOVE 0.5 mA ate this instrument or permit it to be operated without all protective devices correctly in- LEAKAGE DEVICE CURRENT stalled and functioning. Servicers who defeat TESTER BEING safety features or fail to perform safety checks TESTED _ + may be liable for any resulting damage. TEST ALL EXPOSED b. Be sure that there are no cabinet openings through METAL SURFACES 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) spac- ing between the picture tube and the cabinet ALSO TEST WITH mask, (2) excessively wide cabinet ventilation PLUG REVERSED slots, and (3) an improperly fitted and/or incorrectly USING AC secured cabinet back cover. ADAPTER PLUG EARTH c. Antenna Cold Check - With the instrument AC AS REQUIRED GROUND plug removed from any AC source, connect an electrical jumper across the two AC plug prongs. ANY MEASUREMENTS NOT WITHIN THE LIMITS Place the instrument AC switch in the on position. SPECIFIED HEREIN INDICATE A POTENTIAL Connect one lead of an ohmmeter to the AC plug SHOCK HAZARD THAT MUST BE ELIMINATED prongs tied together and touch the other ohmme- BEFORE RETURNING THE INSTRUMENT TO ter lead in turn to each tuner antenna input ex- THE CUSTOMER OR BEFORE CONNECTING posed terminal screw and, if applicable, to the THE ANTENNA OR ACCESSORIES. coaxial connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 mego- e. X-Radiation and High Voltage Limits - Because hm, an abnormality exists that must be corrected the picture tube is the primary potential source of before the instrument is returned to the customer. X-radiation in solid-state TV receivers, it is special- Repeat this test with the instrument AC switch in ly constructed to prohibit X-radiation emissions. the off position. For continued X-radiation protection, the replace- ment picture tube must be the same type as the d. Leakage Current Hot Check - With the instru- original. Also, because the picture tube shields ment completely reassembled, plug the AC line and mounting hardware perform an X-radiation cord directly into a 120V AC outlet. (Do not use an protection function, they must be correctly in place. isolation transformer during this test.) Use a leak- High voltage must be measured each time servic- 2-1 L6115IMP ing is performed that involves B+, horizontal de- earth ground. If a voltage reading in excess of 1.0V flection or high voltage. Correct operation of the X- is obtained, remove and reinsert the AC power radiation protection circuits also must be recon- plug in the opposite polarity and again measure firmed each time they are serviced. (X-radiation the voltage potential between the chassis and a protection circuits also may be called "horizontal known earth ground. disable" or "hold down.") Read and apply the high b. Some TV receiver chassis normally have 85V voltage limits and, if the chassis is so equipped, AC(RMS) between chassis and earth ground re- the X-radiation protection circuit specifications giv- gardless of the AC plug polarity. This chassis can en on instrument labels and in the Product Safety be safety-serviced only with an isolation transform- & X-Radiation Warning note on the service data er inserted in the power line between the receiver chassis schematic. High voltage is maintained and the AC power source, for both personnel and within specified limits by close tolerance safety-re- test equipment protection. lated components/adjustments in the high-voltage c. Some TV receiver chassis have a secondary circuit. If high voltage exceeds specified limits, ground system in addition to the main chassis check each component specified on the chassis ground. This secondary ground system is not iso- schematic and take corrective action. lated from the AC power line. The two ground sys- 2. Read and comply with all caution and safety-relat- tems are electrically separated by insulation ed notes on or inside the receiver cabinet, on the material that must not be defeated or altered. receiver chassis, or on the picture tube. 6. Observe original lead dress. Take extra care to as- 3. Design Alteration Warning - Do not alter or add sure correct lead dress in the following areas:a. to the mechanical or electrical design of this TV re- near sharp edges,b. near thermally hot parts-be ceiver. Design alterations and additions, including, sure that leads and components do not touch ther- but not limited to circuit modifications and the ad- mally hot parts,c. the AC supply,d. high voltage, dition of items such as auxiliary audio and/or video and,e. antenna wiring. Always inspect in all areas output connections, might alter the safety charac- for pinched, out of place, or frayed wiring. Check teristics of this receiver and create a hazard to the AC power cord for damage. user. Any design alterations or additions will void 7. Components, parts, and/or wiring that appear to the manufacturer's warranty and may make you, have overheated or are otherwise damaged the servicer, responsible for personal injury or should be replaced with components, parts, or wir- property damage resulting therefrom. ing that meet original specifications. Additionally, 4. Picture Tube Implosion Protection Warning - determine the cause of overheating and/or dam- The picture tube in this receiver employs integral age and, if necessary, take corrective action to re- implosion protection. For continued implosion pro- move any potential safety hazard. tection, replace the picture tube only with one of 8. Product Safety Notice - Some electrical and me- the same type number. Do not remove, install, or chanical parts have special safety-related charac- otherwise handle the picture tube in any manner teristics which are often not evident from visual without first putting on shatterproof goggles inspection, nor can the protection they give neces- equipped with side shields. People not so sarily be obtained by replacing them with compo- equipped must be kept safely away while picture nents rated for higher voltage, wattage, etc.. Parts tubes are handled. Keep the picture tube away that have special safety characteristics are identi- from your body. Do not handle the picture tube by fied by a ( # ) on schematics and in parts lists. Use its neck. Some "in-line" picture tubes are equipped of a substitute replacement that does not have the with a permanently attached deflection yoke; be- same safety characteristics as the recommended cause of potential hazard, do not try to remove replacement part might create shock, fire, and/or such "permanently attached" yokes from the pic- other hazards. The product's safety is under re- ture tube. view continuously and new instructions are issued 5. Hot Chassis Warning - whenever appropriate. Prior to shipment from the a. Some TV receiver chassis are electrically connect- factory, our products are strictly inspected to con- ed directly to one conductor of the AC power cord firm they comply with the recognized product safe- and maybe safety-serviced without an isolation ty and electrical codes of the countries in which transformer only if the AC power plug is inserted they are to be sold. However, in order to maintain so that the chassis is connected to the ground side such compliance, it is equally important to imple- of the AC power source. To confirm that the AC ment the following precautions when a set is being power plug is inserted correctly, with an AC volt- serviced. meter, measure between the chassis and a known 2-2 L6115IMP Precautions during Servicing 3) Align the lengths of the wires to be connected. In- sert the wires fully into the connector. A. Parts identified by the ( # ) symbol are critical for 4) Use the crimping tool to crimp the metal sleeve at safety. the center position. Be sure to crimp fully to the Replace only with part number specified. complete closure of the tool. B. In addition to safety, other parts and assemblies L. When connecting or disconnecting the internal are specified for conformance with regulations ap- connectors, first, disconnect the AC plug from the plying to spurious radiation. These must also be AC supply outlet. replaced only with specified replacements. Examples: RF converters, RF cables, noise block- ing capacitors, and noise blocking filters, etc. C. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads D. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 2) PVC tubing 3) Spacers 4) Insulators for transistors. E. When replacing AC primary side components (transformers, power cord, etc.), wrap ends of wires securely about the terminals before solder- ing. F. Observe that the wires do not contact heat produc- ing parts (heatsinks, oxide metal film resistors, fus- ible resistors, etc.) G. Check that replaced wires do not contact sharp edged or pointed parts. H. When a power cord has been replaced, check that 5~6 kg of force in any direction will not loosen it. I. Also check areas surrounding repaired locations. J. Use care that foreign objects (screws, solder drop- lets, etc.) do not remain inside the set. K. Crimp type wire connector The power transformer uses crimp type connec- tors which connect the power cord and the primary side of the transformer. When replacing the trans- former, follow these steps carefully and precisely to prevent shock hazards. Replacement procedure 1) Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector (discard it). 2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors. 2-3 L6115IMP Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, Chassis or Secondary Conductor parts and wires have been returned to original posi- tions. Afterwards, perform the following tests and con- Primary Circuit Terminals firm the specified values in order to verify compliance with safety standards. d' d 1. Clearance Distance When replacing primary circuit components, confirm specified clearance distance (d) and (d') between sol- dered terminals, and between terminals and surround- ing metallic parts. (See Fig. 1) Table 1 : Ratings for selected area Clearance AC Line Voltage Region Fig. 1 Distance (d) (d') USA or 3.2 mm 110 to 130 V CANADA (0.126 inches) Note: This table is unofficial and for reference only. Exposed Accessible Part Be sure to confirm the precise values. Z 2. Leakage Current Test Confirm the specified (or lower) leakage current be- tween B (earth ground, power cord plug prongs) and AC Voltmeter 1.5k (High Impedance) externally exposed accessible parts (RF terminals, 0.15µF antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below. B Earth Ground Measuring Method : (Power ON) Power Cord Plug Prongs Fig. 2 Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See Fig. 2 and following table. Table 2 : Leakage current ratings for selected areas AC Line Voltage Region Load Z Leakage Current (i) Earth Ground (B) to: 0.15µF CAP. & 1.5k Exposed accessible 110 to 130 V USA RES. connected in i0.5mA rms parts parallel Note: This table is unofficial and for reference only. Be sure to confirm the precise values. 2-4 L6115IMP STANDARD NOTES FOR SERVICING Circuit Board Indications (2) Remove the flat pack-IC with tweezers while ap- plying the hot air. a. The output pin of the 3 pin Regulator ICs is indicat- (3) Bottom of the flat pack-IC is fixed with glue to the ed as shown. CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat Top View Bottom View up. Then remove (glue will be melted). (Fig. S-1-6) Input (4) Release the flat pack-IC from the CBA using twee- Out In zers. (Fig. S-1-6) Caution: b. For other ICs, pin 1 and every fifth pin are indicat- 1. Do not supply hot air to the chip parts around the ed as shown. flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape 5 around the flat pack-IC to protect other parts from damage. (Fig. S-1-2) Pin 1 2. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when remov- 10 ing it. c. The 1st pin of every male connector is indicated as shown. Hot-air Flat Pack-IC Desoldering Machine CBA Pin 1 How to Remove / Install Flat Pack-IC 1. Removal Masking Flat Pack-IC With Hot-Air Flat Pack-IC Desoldering Machine: Tape (1) Prepare the hot-air flat pack-IC desoldering ma- Tweezers chine, then apply hot air to the Flat Pack-IC (about Fig. S-1-2 5 to 6 seconds). (Fig. S-1-1) Fig. S-1-1 3-1 L6115STA With Soldering Iron: soldering iron to center of the flat pack-IC and heat (1) Using desoldering braid, remove the solder from up. Then remove (glue will be melted). (Fig. S-1-6) all pins of the flat pack-IC. When you use solder (5) Release the flat pack-IC from the CBA using twee- flux which is applied to all pins of the flat pack-IC, zers. (Fig. S-1-6) you can remove it easily. (Fig. S-1-3) Note: When using a soldering iron, care must be taken to Flat Pack-IC Desoldering Braid ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied. Hot Air Blower Soldering Iron Fig. S-1-3 or (2) Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will Iron Wire not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering ma- chine.(Fig. S-1-4) Soldering Iron To Solid Mounting Point Fig. S-1-5 Sharp Pin Fine Tip CBA Soldering Iron Fine Tip Soldering Iron Fig. S-1-4 (3) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat Flat Pack-IC up. Then remove (glue will be melted). (Fig. S-1-6) Tweezers (4) Release the flat pack-IC from the CBA using twee- zers. (Fig. S-1-6) Fig. S-1-6 With Iron Wire: (1) Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) (2) Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. (3) While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA con- tact pads as shown in Fig. S-1-5. (4) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply 3-2 L6115STA 2. Installation Instructions for Handling (1) Using desoldering braid, remove the solder from Semiconductors the foil of each pin of the flat pack-IC on the CBA Electrostatic breakdown of the semiconductors may so you can install a replacement flat pack-IC more occur due to a potential difference caused by electro- easily. static charge during unpacking or repair work. (2) The "I" mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 1. Ground for Human Body on the PCB when positioning for installation. Then Be sure to wear a grounding band (1M) that is prop- pre- solder the four corners of the flat pack-IC. erly grounded to remove any static electricity that may (See Fig. S-1-8.) be charged on the body. (3) Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges. 2. Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding (1M) on the workbench or Example : other surface, where the semiconductors are to be placed. Because the static electricity charge on cloth- ing will not escape through the body grounding band, be careful to avoid contacting semiconductors with your clothing. Pin 1 of the Flat Pack-IC is indicated by a " " mark. Fig. S-1-7 Presolder CBA Grounding Band Flat Pack-IC CBA Fig. S-1-8 1M CBA 1M Conductive Sheet or Copper Plate 3-3 L6115STA CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart Note : (1) Order of steps in procedure. When reassembling, This flowchart indicates the disassembly steps for the follow the steps in reverse order. These numbers cabinet parts, and the CBA in order to gain access to are also used as the Identification (location) No. of item(s) to be serviced. When reassembling, follow the parts in figures. steps in reverse order. Bend, route and dress the (2) Parts to be removed or installed. cables as they were. (3) Fig. No. showing procedure of part location Caution ! (4) Identification of part to be removed, unhooked, un- When removing the CRT, be sure to discharge the locked, released, unplugged, unclamped, or Anode Lead of the CRT with the CRT Ground Wire desoldered. before removing the Anode Cap. S=Screw, P=Spring, L=Locking Tab, CN=Con- [1] Rear Cabinet nector, *=Unhook, Unlock, Release, Unplug, or Desolder 2(S-2) = two Screws (S-2) [2] Jack A CBA [3] Jack B CBA (5) Refer to the following "Reference Notes in the Table. [4] Function CBA Reference Notes in the Table [5] CRT CBA 1. Removal of the Rear Cabinet. Remove screws 4(S-1), (S-2), (S-3), then slide the Rear Cabinet backward. [6] Main CBA 2. Removal of the CRT CBA. Disconnect CN501 then pull the CRT CBA backward. [7] CRT Caution ! Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap. 2. Disassembly Method 3. Removal of the Main CBA. First, disconnect CN801A, CN802A, CN691, and CN571 on the Removal Step/ Main CBA. Second, remove Anode Cap then slide Loc. Part Remove/*unlock/ the Main CBA backward. Fig. No. release/unplug/ Note No 4. Removal of the CRT. Remove screws 4(S-7) and unclamp/desolder Anode Cap then slide the CRT backward. Rear [1] 1,2 4(S-1), (S-2), (S-3) 1 Cabinet [2] Jack A CBA 2 2(S-4), CN811B - [3] Jack B CBA 2 2(S-5), CN812B - Function [4] 2 5(S-6), CN101B - CBA [5] CRT CBA 4,5 CN501 2 CN801A, CN802A, [6] Main CBA 3,5 CN691, CN301A, 3 CN571, Anode Cap [7] CRT 4 4(S-7) 4 (1) (2) (3) (4) (5) 4-1 L6310DC S-1 [1] REAR CABINET S-2 S-3 S-1 Fig. 1 S-1 S-1 [1] REAR CABINET S-3 [2] JACK A CBA S-4 S-2 [3] JACK B CBA S-5 S-6 S-6 S-1 [4] FUNCTION CBA Fig. 2 4-2 L6310DC [3] MAIN CBA Front Cabinet Fig. 3 Anode Cap [2] CRT CBA S-2 S-2 Front Cabinet S-2 Degaussing Coil S-2 [4] CRT Fig. 4 4-3 L6310DC TV Cable Wiring Diagram SP802 FUNCTION CBA SP801 CN101B JACK B CBA MAIN CBA CN812B CN802A JACK A CBA CN812A CN801A CN101A CN811B CN811A CN691 CN301A AC601 AC CORD FLYBACK TU1 TRANSFORMER TUNER CN571 CN581A CRT CBA DG691 CN301B WH581B DEGAUSSING COIL CN501 FOCUS TO CRT GROUND ANODE SCREEN Fig. 5 4-4 L6310DC ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: 4. When CPU version is 054-0.13: Check the display "CBA" is abbreviation for "Circuit Board Assem- on the lower left is "00" and if it is not "00", set it at bly". "00" according to "3-1 FRENCH, ACCESS CODE, NOTE: VIDEO TONE". Electrical adjustments are required after replacing When CPU version is 200-0.07: Confirm that the circuit components and certain mechanical parts. character of U ( U.S.A. model ) is indicated on the It is important to perform these adjustments only bottom left of the CRT. If the character of C ( CAN- after all repairs and replacements have been com- ADA model ) is indicated, perform "3-1 Setting for pleted. FRENCH data Values". Also, do not attempt these adjustments unless the proper equipment is available. 1. DC 105V Adjustment Purpose: To obtain correct operation. Test Equipment Required Symptom of Misadjustment: The picture is dark and 1. NTSC Pattern Generator (Color Bar W/White the unit does not operate correctly. Window, Red Color, Dot Pattern, Gray Scale, Monoscope, Multi-Burst) Test Point Adj. Point Mode Input 2. DC Voltmeter TP601 3. Oscilloscope: Dual-trace with 10:1 probe, TP300 VR661 --- --- V-Range: 0.001~50V/Div, (GND) F-Range: DC~AC-60MHz Tape M. EQ. Spec. 4. Plastic Tip Driver --- DC Voltmeter +105±0.5V DC. 5. Remote control unit:Part No. N0121UD or N0134UD 6. DC power supply 13.2V/5A Note: TP601, TP300(GND), VR661 --- Main CBA How to make Service remote control unit: 1. Connect DC Volt Meter to TP601 and TP300(GND). 1. Prepare normal remote control unit. (Part No. 2. Adjust VR661 so that the voltage of TP601 becomes N0121UD or N0134UD) Remove 3 Screws from +105±0.5V DC. the back lid. (Fig. 1-1) 2. Black Stretch Control Adjustment 2. Add J1 (Jumper Wire) to the remote control CBA. Purpose: To show the fine black color. (Fig. 1-2) Symptom of Misadjustment: Black color will not SCREW appear correctly. Note: Use Service remote control unit. 1. Enter the Service mode. (See page 5-1) 2. Press "6" button on the Service remote control REMOTE CONTROL UNIT Fig. 1-1 unit. "B-S" is indicated. 3. Press "CHo / p" buttons on the Service remote con- trol unit so that display will change " OFF ", "0", " 1 ", " 2 " and " 3 ". Then choose " B-S OFF ". J1 4. Press "6" button on the Service remote control unit. " B-S*2 " is indicated. 5. Press "CHo / p" buttons on the Service remote REMOTE CONTROL CBA Fig. 1-2 control unit so that display will change "0", " 1 ". " 2 " and " 3 ". Then choose " B-S*2 0 ". How to set up the service mode: 6. Turn the power off and on again. (Main power but- Service mode: ton on the TV unit.) 1. Use the service remote control unit. 2. Turn the power on. (Use main power on the TV unit.) 3. Press "SLEEP" button on the service remote con- trol unit. Version of micro computer will display on the CRT. (Ex: 200-0.07 or 054-0.13) 5-1 L6310EA 3-1. Setting for 7F and FRENCH 3-2. Setting for CONTRAST, data Values COLOR, TINT, V-TINT and General SHARP data Values 1. Enter the Service mode. (See page 5-1) General 2. Press "VOL p" button on the Service remote con- 1. Enter the Service mode. (See page 5-1) trol unit. Display changes " C/D ", " VCO ", " 7F ", 2. Press " MENU " button on the Service remote control " FRENCH ", " ACCESS CODE ", " STEREO ", unit. Display changes " BRIGHT ", " CONTRAST ", " " VIDEO TONE ", " FM-MODE " and " AV-OUT " cy- COLOR ", " TINT ", " V-TINT " and " SHARP " cyclical- clically when "VOL p" button is pressed. ly when " MENU " button is pressed. 7F CONTRAST (CNT) 1. Press " VOL p " button on the Service remote 1. Press " MENU " button on the Service remote con- control unit. Then select 7F display. trol unit. Then select " CONTRAST " (CNT) display. 2. Press "CH o / p" buttons on the Service remote 2. Press "CH o / p" buttons on the Service remote control unit. Then choose 7F=FF. control unit so that the value of " CONTRAST " FRENCH (CNT) becomes 78. 1. Press "VOL p" button on the Service remote con- COLOR (CLR) trol unit. Then select FRENCH display. 1. Press " MENU " button on the Service remote con- 2. Press "CH o / p" buttons on the Service remote trol unit. Then select " COLOR " (CLR) display. control unit. Then choose FRENCH=OFF. 2. Press "CH o / p" buttons on the Service remote control unit so that the value of " COLOR " (CLR) becomes 58. When CPU version is 053-0.11, perform the follow- ing settings: TINT (TNT) ACCESS CODE ---- set to OFF 1. Press " MENU " button on the Service remote con- VIDEO TONE ---- set to OFF trol unit. Then select " TINT " (TNT) display. FM-MODE ---- set to ON 2. Press "CH o / p" buttons on the Service remote AV-OUT ---- set to OFF control unit so that the value of " TINT " (TNT) be- STEREO ---- set to OFF comes 60. Note: C/D and VCO data values do not need to be V-TINT (V-TNT) adjusted at this moment. 1. Press " MENU " button on the Service remote con- trol unit. Then select " V-TINT " (V-TNT) display. 2. Press "CH o / p" buttons on the Service remote control unit so that the value of " V-TINT " (V-TNT) becomes 62. SHARP (SHARP) 1. Press " MENU " button on the Service remote con- trol unit. Then select " SHARP " (SHARP) display. 2. Press "CH o / p" buttons on the Service remote control unit and select " SHARP OFF ". Note: BRIGHT data value does not need to be adjust- ed at this moment. 5-2 L6310EA 4. H fo Adjustment 6-1. AGC Adjustment Purpose: To get correct horizontal frequency. Purpose: Set AGC (Auto Gain Control) Level. Symptom of Misadjustment: . If H f0 adjustment is in Symptom of Misadjustment: AGC does not syn- correct, skew distortion will appear on the screen. chronize correctly when RF input level is too weak and picture distortion may occur if it is too strong. Test Point Adj. Point Mode Input Test Point Adj. Point Mode Input CHo / p button R583 ["H-ADJ"] --- Color Bar CHo / p MODE TP301 RF 67.25MHz buttons 60dBµV Tape M. EQ. Spec. Tape M. EQ. Spec. Frequency --- 15.734kHz±300Hz Pattern Counter --- Generator DC +2.7±0.1VDC Note: R583 --- Main CBA Volt Meter Use Service remote control unit. Notes: TP301 --- Main CBA 1. Connect Frequency Counter to R583 and ground. Use Service remote control unit. 2. Set the unit to the VIDEO mode which is located 1. Enter the Service mode. (See Page 5-1) Then before CH2 and no input is necessary. Enter the press number " 2 " button on the Service remote Service mode. (See Page 5-1) control unit. 3. Operate the unit for at least 20 minutes. 2. Receive the Color Bar signal for channel 4 4. Press " 2 " button on the Service remote control (67.25MHz). (RF Input Level: 60dBµV) unit and select H-ADJ Mode. (By pressing " 2 " but- 3. Press "CH o / p" buttons so that the voltage of ton the display will change from TV AGC to H-ADJ) TP301 becomes +2.7±0.1V DC. 5. Press "CH o / p" button on the Service remote 4. Turn the Power off and on again. (Main power but- control unit so that the display will change "0" ~ " 7 ". ton on the TV unit.) At this moment, Choose display one of them from "0" ~ " 7 " when the Frequency Counter shows 6-2. FM AGC Adjustment 15.734 kHz±300Hz or closer. 1. Enter the Service mode. (See page 5-1.) Then 6. Turn the power off and on again. (Main Power but- press number "2" button twice on the remote con- ton on the TV unit.) trol unit. 2. Press CH.o / p buttons so that the FM AGC 5. VCO Adjustment (MAX) level is 127. Purpose: To operate VCO correctly. Symptom of Misadjustment: VCO does not work 7. Black Level Adjustment correctly and/or synchronization is faulty. Purpose: Set Sub-bright Level Symptom of Misadjustment: If Sub-brightness is Test Point Adj. Point Mode Input incorrect, Proper brightness can not be obtained by No adjusting the Brightness Control. --- --- signal Note: TP300 (GND), D316 (Cathode) --- MAIN CBA Tape M. EQ. Spec. 1. Enter the Service mode. (See page 5-1). --- --- --- 2. Press " MENU " button on the Service remote con- trol unit and select " BRT " mode. (Display chang- Note: Use service remote control unit. es " BRT ", " CNT ", " CLR " and " TNT " cyclically 1. Disconnect the RF input and set the unit to Channel 4. when MENU button is pressed). 2. Enter the Service mode. (See Page 5-1) 3. Press "CH o / p" buttons on the Service remote 3. Press " 3 " button on the Service remote control control unit so that the value of " BRT " becomes unit. The Auto VCO adjustment is started. 128. 4. If the display color is changed from red to green, 4. Turn the power off and on again. (Main power but- This adjustment is done. ton on the TV unit.) 5. Turn the Power off and on again. (Main power but- ton on the TV unit.) 5-3 L6310EA 8. C-Trap Adjustment 5. Press "CH o / p" buttons on the Service remote control unit so that the monoscope pattern will be Purpose: To get minimum leakage of the color signal carrier. 90±5% of display size and the circle is round. Symptom of Misadjustment: If C-Trap Adjustment is 6. Turn the power off and on again. (Main power but- incorrect, stripes will appears on the screen. ton on the TV unit.) Test Point Adj. Point Mode Input 10. V. Position Adjustment D316 (Cathode) Purpose: To obtain correct vertical width of screen (Blue) CHo / p Color image. RF TP300 buttons Bar Symptom of misadjustment: If V. Position is incor- (GND) rect, vertical height of image on the screen may not be Tape M. EQ. Spec. properly displayed. --- Oscilloscope --- Test Point Adj. Point Mode Input Note: TP300 (GND), D316 (Cathode) --- MAIN CBA --- Screen Control RF Mono- Use Service remote control unit. CHo / p scope buttons [ V-P ] 1. Connect Oscilloscope to D316 (Cathode) and Mode TP300 (GND). 2. Enter the Service mode. (See Page 5-1) Receive Tape M. EQ. Spec. color bar signal from RF Input. --- Monoscope 90±5% 3. Press "0" button on the Service remote control unit and select C-TRP Mode. Note: Use Service remote control unit 4. Press "CH o / p" buttons on the Service remote con- 1. Operate the unit for at least 20 minutes. trol unit so that the display will change "0", " 1 ", " 2 " 2. Enter the Service Mode. (See page 5-1) and " 3 ". Choose display "0", " 1 ", " 2 " or " 3 " when 3. Receive the Monoscope Pattern. B-Out (3.58MHz) value becomes minimum on the os- 4. Press " 9 " button on the Service remote control unit cilloscope reading. and select " V-P " mode. (Display change " V-S " and 5. Turn the power off and on again. (Main power but- " V-P " cyclically when " 9 " button is pressed). ton on the TV unit.) 5. Press "CH o / p" buttons on the Service remote control unit so that the top and bottom of the mono- 9. V. Size Adjustment scope pattern will be equal of each other. Purpose: To obtain correct vertical width of screen image. 6. Turn the Power off and on again. (Main power but- Symptom of Misadjustment: If V.Size is incorrect, vertical ton on the TV unit.) size of image on the screen may not be properly displayed. Test Point Adj. Point Mode Input Screen Control CHo / p Mono- --- RF buttons [ V-S ] scope Mode Tape M. EQ. Spec. --- Monoscope 90±5% Note: Use service remote control unit. 1. Operate the unit for at least 20 minutes. 2. Enter the Service mode. (See page 5-1) 3. Receive the Monoscope Pattern. 4. Press " 9 " button on the Service remote control unit and select " V-S " mode. (Display changes " V-S " and " V-P " cyclically when " 9 " button is pressed). 5-4 L6310EA 11. H. Position Adjustment 12. Cut-off Adjustment Purpose: To obtain correct horizontal position of Purpose: To adjust the beam current of R, G, B, and screen image. screen voltage. Symptom of Misadjustment: If H. Position is incor- Symptom of Misadjustment: White color may be rect, horizontal position of image on the screen may reddish, greenish or bluish. not be properly displayed. Test Point Adj. Point Mode Input Test Point Adj. Point Mode Input Screen-Control Screen Control Black --- CHo / p RF CHo / p Mono- Raster --- RF buttons buttons [ H-P ] scope Mode Tape M. EQ. Spec. Tape M. EQ. Spec. Pattern See Reference --- Generator Notes below. --- Monoscope 90±5%