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SERVICE MANUAL
19 COLOR TELEVISION
6419TEY
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 described 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 understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Funai could not possibly know, evaluate and advice the service trade of all conceivable 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 procedure or tool which is not recommended by Funai must first use all precautions 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 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 How to initialize the Television. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Schematic Diagrams / CBA's and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1
SPECIFICATIONS
< TUNER >
ANT. Input ---------------------- 75 ohm Unbal., F type Reference Level--------------- 20 Vp-p (CRT Green Cathode) Test Input Signal -------------- 400 Hz 30% modulation Description 1. Intermediate Freq. Condition Picture Sound VHF CATV UHF --Unit MHz MHz dBµV dBµV dBµV MHz Nominal 45.75 41.25 15 15 15 ±2.0 Limit ----30 30 40 ±0.7
2. Peak Picture Sens 3. AFT Pull In Range (10 mV input)
< DEFLECTION >
Description 1. Deflection Freq. 2. Linearity 3. Over Scan 4. High Voltage Condition Horizontal Vertical Horizontal Vertical ----Unit kHz Hz % % % kV Nominal 15.734 60 ----10 26 Limit ----±15 ±10 -----
< VIDEO & CHROMA >
Description 1. Misconvergence 2. Brightness 3. Color Temperature 4. Resolution Condition Center Side Corner APL 100% --Horizontal Vertical Unit mm mm mm Ft-L °K Line Line Nominal ------40 9200 °K 250 300 Limit 0.4 1.5 2.1 25 -------
< AUDIO >
All items are measured across 8 load at speaker output terminal. Description 1. Audio Output Power 2. Audio Distortion (w/LPF) 3. Audio Freq. Response Condition 10% THD 500 mW -3 dB Unit W % Hz Nominal 1 2 100 ~ 11 k Limit 0.8 7 ---
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.
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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
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 have been defeated 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 fishpapers, 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 the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover. c. Antenna Cold Check - 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 megohm or greater than 5.2 megohm, 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 - With the instrument completely reassembled, plug the
AC line cord directly into a 120 V 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) C101.1 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 water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, 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 milli-ampere. Reverse the instrument power cord plug in the outlet and repeat the test.
READING SHOULD NOT BE ABOVE 0.5 mA
DEVICE BEING TESTED LEAKAGE CURRENT TESTER
+
_
TEST ALL EXPOSED METAL SURFACES
ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED
EARTH GROUND
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. X-Radiation and High Voltage Limits Because the picture tube is the primary potential source of X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions. For continued Xradiation protection, the replacement picture tube must be the same type as the original. 2-1 TVN_ISP
Also, because the picture tube shields and mounting hardware perform an X-radiation protection function, they must be correctly in place. High voltage must be measured each time servicing is performed that involves B+, horizontal deflection or high voltage. Correct operation of the X-radiation protection circuits also must be reconfirmed each time they are serviced. (X-radiation protection circuits also may be called "horizontal disable" or "hold down.") Read and apply the high voltage limits and, if the chassis is so equipped, the Xradiation protection circuit specifications given on instrument labels and in the Product Safety & X-Radiation Warning note on the service data chassis schematic. High voltage is maintained within specified limits by close tolerance safety-related components/ adjustments in the high-voltage circuit. If high voltage exceeds specified limits, check each component specified on the chassis schematic and take corrective action. 2. Read and comply with all caution and safetyrelated 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 connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will 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. Some "in-line" picture tubes are equipped with a permanently attached deflection yoke; because of potential hazard, do not try to remove such "permanently attached" yokes from the picture tube. 5. Hot Chassis Warning a. Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord and maybe safety-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. To confirm that the AC power plug is inserted correctly, with an AC voltmeter, measure 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. This chassis can be safety-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 insulation 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 of place, or frayed wiring. 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 - Some electrical and mechanical parts have special safety-related characteristics 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 by a # on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The product's safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are strictly inspected to confirm they comply with the recognized product safety and electrical codes
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TVN_ISP
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.
3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. 4) Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool. L. When connecting or disconnecting the internal connectors, first, disconnect the AC plug from the AC supply outlet.
Precautions during Servicing
A. Parts identified by the # symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking 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 soldering. F. Observe that the wires do not contact heat producing parts (heat sinks, oxide metal film resistors, fusible 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 droplets, etc.) do not remain inside the set. K. Crimp type wire connector The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the transformer, 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.
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Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
1. Clearance Distance
When replacing primary circuit components, confirm specified clearance distance (d) and (d') between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1) Table 1: Ratings for selected area AC Line Voltage 110 to 130 V Region U.S.A. or Canada Clearance Distance (d), (d') 3.2 mm (0.126 inches)
Chassis or Secondary Conductor Primary Circuit Terminals d' d
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
Fig. 1
2. Leakage Current Test
Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, 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. Measuring Method: (Power ON) 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.
Exposed Accessible Part Z AC Voltmeter (High Impedance)
B
Earth Ground Power Cord Plug Prongs Fig. 2
Table 2: Leakage current ratings for selected areas AC Line Voltage 110 to 130 V Region U.S.A. or Canada Load Z 0.15 µF CAP. & 1.5 k RES. Connected in parallel Leakage Current (i) i 0.5 mA rms Earth Ground (B) to: Exposed accessible parts
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
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STANDARD NOTES FOR SERVICING
Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is indicated as shown.
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine: 1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)
Top View Out In Input
Bottom View
2. For other ICs, pin 1 and every fifth pin are indicated as shown.
5 Pin 1
10
3. The 1st pin of every male connector is indicated as shown.
Fig. S-1-1
2. Remove the flat pack-IC with tweezers while applying the hot air.
Pin 1
Pb (Lead) Free Solder
Pb free mark will be found on PCBs which use Pb free solder. (Refer to figure.) For PCBs with Pb free mark, be sure to use Pb free solder. For PCBs without Pb free mark, use standard solder.
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 up. Then remove (glue will be melted). (Fig. S-1-6) 4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6) CAUTION: 1. The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC. 2. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)
Pb free mark
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3. 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 removing it.
With Soldering Iron: 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)
CBA
Hot-air Flat Pack-IC Desoldering Machine
Flat Pack-IC
Desoldering Braid
Soldering Iron Masking Tape Tweezers Flat Pack-IC Fig. S-1-3
2. Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)
Fig. S-1-2
Sharp Pin 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 up. Then remove (glue will be melted). (Fig. S-1-6) 4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
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TVN_SN
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 contact 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 soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) 5. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6) Note: When using a soldering iron, care must be taken to 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.
2. Installation
1. Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily. 2. The "" mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.) 3. Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges.
Example :
Hot Air Blower
Pin 1 of the Flat Pack-IC is indicated by a " " mark.
Fig. S-1-7
or Iron Wire
Presolder
Soldering Iron To Solid Mounting Point Fig. S-1-5 Flat Pack-IC CBA CBA Fine Tip Soldering Iron Fig. S-1-8
Flat Pack-IC Tweezers Fig. S-1-6
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Instructions for Handling Semiconductors
Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 M) that is properly grounded to remove any static electricity that may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with proper grounding (1 M) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing.
CBA
Grounding Band
1M
CBA
1M Conductive Sheet or Copper Plate
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CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps for the cabinet parts, and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables as they were. Caution ! When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap. Note : (1) Order of steps in procedure. When reassembling, follow the steps in reverse order. These numbers are also used as the Identification (location) No. of parts in figures. (2) Parts to be removed or installed. (3) Fig. No. showing procedure of part location (4) Identification of part to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desolder 2(S-2) = two Screws (S-2) (5) Refer to the following "Reference Notes in the Table."
[1] Rear Cabinet
[2] CRT CBA
Reference Notes in the Table
[3] Main CBA
1. Removal of the Rear Cabinet. Remove screws 5(S-1) and (S-2) then slide the Rear Cabinet backward. 2. Removal of the CRT CBA. Disconnect CN501 then pull the CRT CBA backward. 3. Removal of the Main CBA. Disconnect CN571 on the Main CBA then slide the Main CBA backward. Caution ! Removal Step/ Loc. No. Part Fig. No. Remove/*Unhook/ Unlock/Release/ Unplug/Unclamp/ Desolder Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap. Note 4. Removal of the CRT. Remove screws 4(S-3) and Anode Cap. then slide the CRT backward.
[4] CRT
2. Disassembly Method
[1] [2] [3] [4] (1)
Rear Cabinet CRT CBA Main CBA CRT (2)
D1 5(S-1), (S-2) D2 D4 CN501 D5 D3 CN571 D5 D4 4(S-3), Anode Cap (3) (4)
1 2 3 4 (5)
4-1
L2310DC
S-1
Front Cabinet [3] Main CBA
S-2
Control Plate S-1 [1] Rear Cabinet Fig. D1 Fig. D3
[1] Rear Cabinet S-1
S-1
Degauss Holder S-3 CRT Ground Wire S-1 Front Cabinet S-3
Anode Cap. Degaussing Coil [2] CRT CBA
Front Cabinet
S-2 S-1 S-1 [4] CRT S-3
S-3
Degauss Holder Control Plate Control Plate
Fig. D2
Fig. D4
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TV Cable Wiring Diagram
SP801
L691 DEGAUSSING COIL CLN801 MAIN CBA CN801
WH301A CN691 FLYBACK TRANSFORMER T571 TU1 TUNER
CN571 WH501A AC601 AC CORD FOCUS JK501 SCREEN WH301B WH501B ANODE CN501 TO CRT GROUND Fig. D5
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ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note: "CBA" is abbreviation for "Circuit Board Assembly." NOTE: Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.
How to enter the service mode:
Service mode:
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 control unit. Version of micro computer will display on the CRT. (Ex: 058-0.06) 4. When CPU version is 058-0.06: Check the display on the lower left is "0200," set it at "0200" according to "3-1. Setting for Data Values."
Test Equipment Required
1. NTSC Pattern Generator (Color Bar W/White Window, Red Color, Dot Pattern, Gray Scale, Monoscope, Multi-Burst) 2. DC Voltmeter 3. Oscilloscope: Dual-trace with 10:1 probe, V-Range: 0.001~50V/Div, F-Range: DC~AC-60MHz 4. Plastic Tip Driver 5. Remote control unit: Part No. N0121UD or N0134UD 6. DC power supply 13.2V/5A 7. Color Analyzer
1. DC 114V Adjustment
Purpose: To obtain correct operation. Symptom of Misadjustment: The picture is dark and the unit does not operate correctly. Test Point TP601 TP300 (GND) M. EQ. DC Voltmeter, Plastic Tip Driver Adj. Point VR661 Spec. +114±0.5V DC
How to make service remote control unit:
1. Prepare normal remote control unit. (Part No. N0121UD or N0134UD) Remove 3 Screws from the back lid. (Fig. 1-1) 2. Add J1 (Jumper Wire) to the remote control CBA. (Fig. 1-2)
Note:TP601, TP300 (GND), VR661 --- Main CBA 1. Connect DC Volt Meter to TP601 and TP300(GND). 2. Adjust VR661 so that the voltage of TP601 becomes +114±0.5V DC.
SCREW
2. Black Stretch Control Adjustment
Purpose: To show the fine black color. Symptom of Misadjustment: Black color will not appear correctly. Note: Use service remote control unit.
REMOTE CONTROL UNIT J1
Fig. 1-1
1. Enter the Service mode. (See page 5-1) 2. Press "6" button on the service remote control unit. "B-S" is indicated. 3. Press "CH o / p" buttons on the service remote control unit so that display will change "OFF," "0," "1," "2" and "3." Then choose "B-S OFF." 4. Press "6" button on the service remote control unit. "B-S*2" is indicated. 5. Press "CH o / p" buttons on the service remote control unit so that display will change "0" and "1." Then choose "B-S*2 0." 6. Turn the power off and on again, using the main power button on the TV unit.
REMOTE CONTROL CBA
Fig. 1-2
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L2310EA
3-1. Setting for Data Values
General 1. Enter the Service mode. (See page 5-1) 2. To select the data value, press "VOL p" button on the service remote control unit. 3. To set the following each data value, press "CH o / p" buttons on the service remote control unit. 7F --- set to 7F LANGUAGE --- set to SPA/FRA ACCESS CODE --- set to OFF SOUND TYPE --- set to MONO VIDEO TONE --- set to OFF FM-MODE --- set to OFF V-OUT --- set to OFF VIDEO --- set to V1 AV-MEMO --- set to OFF STABLE SOUND --- set to OFF FILTER --- set to OFF PROTECTOR --- set to 1000 YUVMEMORY --- set to OFF NO SIGNAL BRT --- set to 0 A-MUTE POL --- set to L V-MENU --- set to OFF
TINT (TNT) 1. Press "MENU" button on the service remote control unit. Then select "TINT" (TNT) display. 2. Press "CH o / p" buttons on the service remote control unit so that the value of "TINT" (TNT) becomes 57. V-TINT (V-TNT) 1. Press "MENU" button on the service remote control 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 60. SHARP (SHARP) 1. Press "MENU" button on the service remote control unit. Then select "SHARP" (SHARP) display. 2. Press "CH o / p" buttons on the service remote control unit so that the value of "SHARP" (SHARP) becomes 40. Note: BRIGHT data value does not need to be adjusted at this moment.
3-3. H Adjustment
Purpose: To get correct horizontal position and size of screen image. Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed. 1. Enter the Service mode. (See page 5-1) 2. Press "2" button on the service remote control unit and select H-Adj Mode. 3. Press "CH o / p" buttons on the service remote control unit so that the display will change "0" to "7." Then choose "4." 4. Turn the power off and on again, using the main power button on the TV unit.
3-2. Setting for CONTRAST, COLOR, TINT, V-TINT and SHARP data Values
General 1. Enter the Service mode. (See page 5-1) 2. Press "MENU" button on the service remote control unit. Display changes "BRT," "CNT," "CLR," "TNT," "V-TNT" and "SHARP" cyclically when "MENU" button is pressed. CONTRAST (CNT) 1. Press "MENU" button on the service remote control unit. Then select "CONTRAST" (CNT) display. 2. Press "CH o / p" buttons on the service remote control unit so that the value of "CONTRAST" (CNT) becomes 84. COLOR (CLR) 1. Press "MENU" button on the service remote control unit. Then select "COLOR" (CLR) display. 2. Press "CH o / p" buttons on the service remote control unit so that the value of "COLOR" (CLR) becomes 58.
5-2
L2310EA
4. Black Level Adjustment
Purpose: Set Black Level Symptom of Misadjustment: If Black level is incorrect, proper brightness can not be obtained by adjusting the Brightness Control. 1. Enter the Service mode. (See page 5-1.) 2. Press "MENU" button on the service remote control unit and select "BRT" mode. (Display changes "BRT," "CNT," "CLR," "TNT," "V-TINT" and "SHARP" cyclically when "MENU" button is pressed.) 3. Press "CH o / p" buttons on the service remote control unit so that the value of "BRT" becomes 128. 4. Turn the power off and on again, using the main power button on the TV unit.
6. V. Position Adjustment
Purpose: To obtain correct vertical position of screen image. Symptom of misadjustment: If V. Position is incorrect, vertical height of image on the screen may not be properly displayed. Adj. Point Screen Control, CH o / p buttons M. EQ. Pattern Generator Mode RF Input Monoscope Spec. 90±5%
5. V. Size Adjustment
Purpose: To obtain correct vertical height of screen image. Symptom of Misadjustment: If V.Size is incorrect, vertical height of image on the screen may not be properly displayed. Adj. Point CH o / p buttons M. EQ. Pattern Generator Note: Use service remote control unit. 1. Operate the unit for at least 20 minutes. 2. Enter the Service mode. (See page 1-5-1.) Press "9" button on the remote control unit and select V-S mode. (Press "9" button then display will change to V-P and V-S.) 3. Input monoscope pattern. 4. Press "CH o / p" buttons on the service remote control unit so that the monoscope pattern is 90±5% of display size and the circle is round. 5. Turn the power off and on again, using the main power button on the TV unit. Input Monoscope Spec. 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-P" mode. (Display change "V-S" and "V-P" cyclically when "9" button is pressed.) 5. Press "CH o / p" buttons on the service remote control unit so that the top and bottom of the monoscope pattern are equal to each other. 6. Turn the power off and on again, using the main power button on the TV unit.
7. H. Position Adjustment
Purpose: To obtain correct horizontal position of screen image. Symptom of Misadjustment: If H. Position is incorrect, horizontal position of image on the screen may not be properly displayed. Adj. Point CH o / p buttons, [ H-P ] Mode M. EQ. Pattern Generator Mode RF Input Monoscope Spec. 90±5%
Note: Use service remote control unit 1. 2. 3. 4. Operate the unit for at least 20 minutes. Enter the Service mode. (See page 5-1) Receive the Monoscope Pattern. Press "8" button on the remote control unit and select "H-P" mode. 5. Press "CH o / p" buttons on the service remote control unit so that the monoscope pattern is 90±5% of display size and the circle is round. 6. Turn the power off and on again, using the main power button on the TV unit.
5-3
L2310EA
8. Cut-off Adjustment
Purpose: To adjust the beam current of R, G, B, and screen voltage. Symptom of Misadjustment: White color may be reddish, greenish or bluish. Adj. Point Screen Control, CH o / p buttons M. EQ. Pattern Generator Mode RF Input Black Raster Spec. See Reference Notes below. Figure
PATTERN GENERATOR
9. White Balance Adjustment
Purpose: To mix red, green and blue beams correctly for pure white. Symptom of Misadjustment: White becomes bluish or reddish. Test Point Screen Adj. Point CH o / p buttons Mode RF Input White Raster (APL 100%) Spec. See below Figure
M. EQ. Pattern Generator, Color analyzer
Color Analyzer
EXT. INPUT Fig 2
Fig. 3
Note: Screen Control FBT --- Main CBA FBT= Fly Back Transformer Use service remote control unit 1. Degauss the CRT and allow CRT to operate for 20 minutes before starting the alignment. 2. Input the Black Raster Signal from RF Input. 3. Enter the Service mode. (See page 5-1) 4. Press "VOL p" button on the service remote control unit and select "C/D" mode. (Display will change "C/D," "7F," "LANGUAGE," "ACCESS CODE," "SOUND TYPE," "VIDEO TONE," "FM-MODE," "VOUT," "VIDEO," "AV-MEMO," "STABLE," "FILTER," "YUVMEMORY" and "A-MUTE POL" cyclically when "VOL p" button is pressed.) Then press "1." The display will momentarily show "CUT OFF R" (R=Red.) Now there should be a horizontal line across the center of the picture tube. If needed, gradually turn the screen control on the flyback clockwise until the horizontal line appears. Adjust the Red Cut off by pressing the "CH o / p" buttons. Proceed to Step 5 when the Red Cut off adjustment is done. 5. Press the "2" button. The display will momentarily show "CUT OFF G" (G=Green.) Adjust the Green Cut off by pressing the "CH o / p" buttons. Proceed to step 6 when the Green Cut off adjustment is done. 6. Press the "3" button. The display will momentarily show "CUT OFF B" (B=Blue.) Adjust the Blue Cut off by pressing the "CH o / p" buttons. When done with steps 4, 5 and 6, the horizontal line should be pure white. If not, then attempt the Cut off adjustment again.
Note: Use service remote control unit 1. Operate the unit more than 20 minutes. 2. Face the unit to the East. Degauss the CRT using degaussing coil. 3. Input the White Raster (APL 100%). 4. Set the color analyzer to the CHROMA mode and after zero point calibration, bring the optical receptor to the center on the tube surface (CRT). 5. Enter the Service mode. Press "VOL p" button on the service remote control unit and select "C/D" mode. (Display changes "C/D," "7F," "LANGUAGE," "ACCESS CODE," "SOUND TYPE," "VIDEO TONE," "FM-MODE," "V-OUT," "VIDEO," "AV-MEMO," "STABLE," "FILTER," "YUVMEMORY" and "A-MUTE POL" cyclically when "VOL p" button is pressed.) Then press "8" button on the Service remote control Unit. 6. Press "4" button on the service remote control unit for Red adjustment. Press "5" button on the service remote control unit for Blue adjustment. 7. In each color mode, press "CH o / p" button to adjust the values of color. 8. Adjusting Red and Blue color so that the temperature becomes 9200K (x: 286 / y: 294) ±3%. 9. At this time, re-check that horizontal line is white. (Refer to "Cut-off Adjustment".) If not, re-adjust Cut-off Adjustment until the horizontal line becomes pure white. 10. Turn the power off and on again to return to normal mode. Receive APL 100% white signal and confirm that chroma temperatures become 9200K (x: 286 / y: 294) ±3%. Note: Confirm that Cut Off Adj. is correct after this adjustment, and attempt Cut Off Adj. if needed.
5-4
L2310EA
10. Sub-Brightness Adjustment
Purpose: To get proper brightness. Symptom of Misadjustment: If Sub-Brightness is incorrect, proper brightness cannot be obtained by adjusting the Brightness Control. Adj. Point CH o / p buttons M. EQ. Pattern Generator Figure Mode RF Spec. See below Input IQW
The following 2 adjustments normally are not attempted in the field. They should be done only
when replacing the CRT then adjust as a preparation.
12. Purity Adjustment
Purpose: To obtain pure color. Symptom of Misadjustment: If Color Purity Adjustment is incorrect, large areas of color may not be properly displayed. Adj. Point Deflection Yoke, Purity Magnet M. EQ. Input *Red Color Spec. See below. Figure
White
Black This bar just visible Fig. 4
Pattern Generator
Note: IQW Setup level --- 7.5 IRE Use service remote control unit 1. Enter the Service mode. (See page 5-1) Then input IQW signal from RF Input. 2. Press "MENU" button on the service remote control unit and Select "BRT" mode. (Display changes "BRT," "CNT," "CLR," "TNT," "V-TINT" and "SHARP" cyclically when "MENU" button is pressed.) Press "CH o / p" buttons so that the bar is just visible (See above figure). 3. Turn the power off and on again, using the main power button on the TV unit.
GREEN
RED
BLUE Fig. 5
1. Set the unit facing east. 2. Operate the unit for over 30 minutes before adjusting. 3. Fully degauss the unit using an external degaussing coil. 4. Loosen the screw on the Deflection Yoke Clamper and pull the Deflection Yoke back away from the screen. (See Fig. 6) 5. Loosen the Ring Lock and adjust the Purity Magnets so that a red field is obtained at the center of the screen. Tighten Ring Lock. (See Fig. 5, 6) 6. Slowly push the Deflection Yoke toward the bell of the CRT and set it where a uniform red field is obtained. 7. Tighten the clamp screw on the Deflection Yoke.
11. Focus Adjustment
Purpose: Set the optimum Focus. Symptom of Misadjustment: If Focus Adjustment is incorrect, blurred images are shown on the display. Adj. Point Focus Control M. EQ. Pattern Generator Mode RF Input Monoscope Spec. See below
Note: Focus VR (FBT) --- Main CBA, FBT= Fly Back Transformer 1. Operate the unit more than 30 minutes 2. Face the unit to the East and degauss the CRT using a degaussing coil. 3. Input the Monoscope Pattern. 4. Adjust the Focus Control on the FBT to obtain clear picture.
5-5
L2310EA
13. Convergence Adjustment
Purpose: To obtain proper convergence of red, green and blue beams. Symptom of Misadjustment: If Convergence Adjustment is incorrect, the edge of white letters may have color edges. Adj. Point C.P. Magnet (RB), C.P. Magnet (RB-G), Deflection Yoke M. EQ. Pattern Generator Figure
CRT COIL SCREW PURITY RB RB-G RING LOCK SCREW
Input Dot Pattern or Crosshatch Spec. See below.
DY WEDGE C.P. MAGNET CLAMPER C.P. MAGNET COIL CLAMPER DEFLECTION YOKE
Fig. 6
C.P. MAGNET (RB)
R G G R G B
Fig. 7 C.B. MAGNET (RB-G)
RB G RB G
Fig. 8
1. Loosen the Ring Lock and align red with blue dots or crosshatch at the center of the screen by rotating (RB) C.P. Magnets. (See Fig. 7) Align red / blue with green dots at the center of the screen by rotating (RB-G) C.P. Magnet. (See Fig. 8) Fix the C.P. Magnets by tightening the Ring Lock. Remove the DY Wedges and slightly tilt the Deflection Yoke horizontally and vertically to obtain the best overall convergence. Fix the Deflection Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke.
2. 3. 4.
5.
5-6
L2310EA
HOW TO INITIALIZE THE TELEVISION
To put the program back at the factory-default, initialize the television as the following procedure. 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 control unit to enter the Service mode. (Refer to "How to enter the Service mode" on page 5-1.) 4. Press [VOL p] button on the service remote control unit twice, and confirm that OSD indication is "7F = FF." If needed, set it to become "7F = FF" by pressing [CH o / p] buttons on the service remote control unit. 5. Confirm that OSD indication on the four corners on TV screen changes from on and off light indication to red by pressing a [DISPLAY] button. (It takes one or two seconds.) 6. Turn the power off by pressing main power button on the TV unit, and unplug the AC cord from the AC outlet.
6-1
L3300INT
RF/IF SIGNAL
IC31 CF31 4 2 WF6 7 TU-AUDIO FM DET 9 AF AMP TO AUDIO/POWER CONTROL BLOCK 1 CF32 VCO 4.5MHz FILTER 4.5MHz TRAP EQ AMP (IF SIGNAL PROCESS) WF1
VIDEO SIGNAL
AUDIO SIGNAL
SF1 16 17 VIF AMP VIDEO DET
MAIN CBA
SAW FILTER
TU1
IF 11 LPF IF AGC DET AFT AMP VCO F/B Q31 13 18 6 11
AGC SCL SDA EXT.CLK 14
1 4 5 8
RF AGC
WF16
SCL X301 3.58MHz 73 16 AFT 72 I2C-OPEN 58 SCL 56 SDA 32 VCXO TO POWER SUPPLY BLOCK TO CRT/H.V. BLOCK AGC-IN 75 63 EXT-H RCV-IN 70 KEY-IN1 66 KEY-IN2 69 RCV101 REMOTE SENSOR KEY SWITCH IC111 TV MICON/VIDEO /AUDIO/CHROMA /DEFLECTION
TO AUDIO/POWER CONTROL BLOCK
SDA
IC151 (MEMORY)
IF/Video/System Control Block Diagram
BLOCK DIAGRAMS
7-1
26 TUNER LUMINANCE PROCESS CIRCUIT RGB MATRIX /COLOR CONT OSD SW /CONTRAST /BRIGHTNESS 24 LINE CHROMINANCE PROCESS CIRCUIT LPF 14 11 OSD H-SYNC PROCESS CIRCUIT V-SYNC PROCESS CIRCUIT
CS 7 SCL 6 SDA 5
(NO CONNECTION) I2C-OPEN SDA SCL
CN301 2 4 5
CN301 is used for adjustment at factory
P-ON-H PROTECT-1 PROTECT-2 PROTECT-3
79 68 67 76
PROTECT-1 PROTECT-2 P-ON-H PROTECT-1 PROTECT-2 PROTECT-3
JK701 VIDEO-IN
RGB DRIVE /CUT OFF /H.V. BLK
52 51 50
WH301A 5 BLUE 4 GREEN 3 RED
TO CRT/H.V. BLOCK WH301B
WF2
53 46 45 38 37
ACL H-DRIVE FBP V-DRIVE V-RAMP-F/B
TO CRT/H.V. BLOCK
L2305YBLIF
AUDIO SIGNAL
IC111 TV MICON/VIDEO /AUDIO/CHROMA /DEFLECTION
P-ON-H 79
SCL 56 SDA
58 SCL
TO IF/VIDEO/SYSTEM CONTROL BLOCK
SDA
TU-AUDIO
JK801 EARPHONE JACK IC801 (AMP)
JK702 AUDIO-IN LINE ATT 34 A-MUTE-H 64 MUTE 5 7 TUNER 27 OUTPUT
25 1 CN801 CLN801 SPEAKER 1 SP-GND 2 SP801 SPEAKER
Audio/Power Control Block Diagram
7-2
31 POWER MANAGE. /MCU RESET 40 18 28 +8V-CTRL +5V-CTRL2 +5V-CTRL TO POWER SUPPLY BLOCK 13 RESET 12
AL+9V
L2305YBLA
MAIN CBA
VIDEO SIGNAL
IC551 (V-DEFLECTION CONTROL)
MAIN CBA
WF12 DY551 D.Y. 5 5 4 3 WF9 1 CN571 6 3 PULSE UP Q571 H.OUTPUT VDRIVE HDRIVE WF11 7 AMP 1 THERMAL PROTECTION
V-DRIVE
PROTECT-1
V-RAMP-F/B TO IF/VIDEO/SYSTEM CONTROL BLOCK WF8
WF7
T572
H-DRIVE
Q572 H.DRIVE
CRT/H.V. Block Diagram
PROTECT-2
TO POWER SUPPLY BLOCK T571 F.B.T. HV F ANODE S 1 3 5 7 SCREEN VR 4 6 WH501B 3 1 WF10 WH501A 3 HEATER 1 +160V 9 10 8 11 FOCUS SCREEN FOCUS VR
DEF+B +B
X-RAY J122 J121
7-3
WF3 Q501 RED AMP WF15 WF4 Q502 GREEN AMP WF14
ANODE
TO IF/VIDEO/SYSTEM CONTROL BLOCK
PROTECT-3 FBP ACL
JK501 FOCUS SCREEN GND Q503 BLUE AMP WF5 WF13 R G B V501 CRT
TO IF/VIDEO/SYSTEM CONTROL BLOCK WH301A
WH301B RED 3 GREEN 4 BLUE 5
7 4 8 6 11 10 9 CN501
HEATER
GND
L2305YBLCRT
CRT CBA
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
4A/125V
CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
HOT CIRCUIT. BE CAREFUL.
4A/125V
D605 - D608 T601 6 7 BRIDGE RECTIFIER
HOT
TP601 +B TP300 GND
COLD
F601 4A/125V
L601
Power Supply Block Diagram
AC601 AC CORD 10
LINE FILTER
+B AL+33V DEF +B
CN691
DG691 DEGAUSSING COIL 8 4
PS691
BACK-UP +5V-CTRL2 (TO PIN18 OF IC111) Q111 +5V SWITCHING AL+5V Q671 SWITCHING
7-4
2 12 Q602 LIMITER 1 11 4 IC601 ERROR VOLTAGE DET 3 2 Q662 FEED BACK 1 VR661 +B ADJ Q675 SWITCHING P-ON-ON
Q321 +9V SWITCHING
AL+9V AL+12V
Q601 SWITCHING
Q681 +8V SWITCHING
P-ON+8V +8V-CTRL (TO PIN40 OF IC111) PROTECT-2 (TO PIN67 OF IC111) Q682 +5V SWITCHING P-ON+5V +5V-CTRL (TO PIN28 OF IC111) Q676 SWITCHING CONTROL Q683 +5V SWITCHING P-ON+5V PROTECT-1 (TO PIN68 OF IC111) P-ON-H (TO PIN79 OF IC111)
L2305YBLP
MAIN CBA
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS
Standard Notes
Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts that have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the mark "#" in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards.
Notes:
1. Do not use the part number shown on these drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended since these drawings were prepared. 2. All resistance values are indicated in ohms (K = 103, M = 106). 3. Resistor wattages are 1/4W or 1/6W unless otherwise specified. 4. All capacitance values are indicated in µF (P = 10-6 µF). 5. All voltages are DC voltages unless otherwise specified.
Note of Capacitors:
ML --- Mylar Cap. PP --- Metallized Film Cap. SC --- Semiconductor Cap. L --- Low Leakage type
Temperature Characteristics of Capacitors are noted with the following:
B --- ±10% CH --- 0±60 ppm/°C CSL --- +350~-1000 ppm/°C
Tolerance of Capacitors are noted with the following:
Z --- +80~-20%
Note of Resistors:
CEM --- Cement Res. MTL --- Metal Res. F --- Fuse Res. Capacitors and transistors are represented by the following symbols.
CBA Symbols
(Top View) (Bottom View) + Electrolytic Capacitor
Schematic Diagram Symbols
Digital Transistor
(Bottom View)
Transistor or Digital Transistor
E C B (Top View)
(Top View)
NPN Transistor
ECB ECB
PNP Transistor
(Top View)
(Top View)
NPN Digital Transistor
ECB ECB
PNP Digital Transistor
8-1
L15N_SC
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE_A,_V FUSE. ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE_A,_V.
2. CAUTION:
Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
3. Note:
1. Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended since the drawings were prepared. 2. To maintain original function and reliability of repaired units, use only original replacement parts which are listed with their part numbers in the parts list section of the service manual.
4. Voltage indications on the schematics are as shown below:
Plug the TV power cord into a standard AC outlet.:
1 (Unit: Volt) 5.0 (3.0)
2
3 5.0 (3.0) Power on mode Power off mode
Voltage
Indicates that the voltage is not consistent here.
5. How to read converged lines
1-D3 Distinction Area Line Number (1 to 3 digits) 3 AREA D3 1-B1
2 Examples: 1. "1-D3" means that line number "1" goes to the line number 1 "1" of the area "D3". 2. "1-B1" means that line number "1" goes to the line number "1" of the area "B1".
AREA B1 1-D3 A B C D
6. Test Point Information
: Indicates a test point with a jumper wire across a hole in the PCB. : Used to indicate a test point with a component lead on foil side. : Used to indicate a test point with no test pin. : Used to indicate a test point with a test pin.
8-2
L15N_SC
Main 1/3 Schematic Diagram
MAIN 1/3 Ref No. ICS
Position
C-2 IC111 A-4 IC151 B-1 IC801 TRANSISTORS Q111 D-1 Q321 E-2 CONNECTORS A-4 CN301 CN801 A-1
8-3
L2305YSCM1
Main 2/3 Schematic Diagram
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
4A/125V
CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
MAIN 2/3 Ref No. ICS
Position
J-3 IC31 I-1 IC601 TRANSISTORS H-4 Q31 J-2 Q601 Q602 J-1 I-1 Q662 H-2 Q671 H-1 Q675 H-1 Q676 G-2 Q681 G-1 Q682 G-1 Q683 CONNECTOR CN691 K-2 VARIABLE RESISTOR VR661 I-1
1 NOTE: *These components (C643, C642, JS642) can be used in any models. However, you cannot mix components under Group A with the ones under Group B. You can choose either Group. The difference between Group A and Group B is shown below. Group A Group B C643 C642 JS642 0.01/250V 0.01/250V Not Used 4700P/250V Not Used WIRE
8-4
L2305YSCM2
Main 3/3 & CRT Schematic Diagram
MAIN 3/3 Ref No.
Position
IC M-3 IC551 TRANSISTORS O-2 Q571 O-2 Q572 CONNECTORS N-3 CN571 WH301A P-2 WH501A P-2 TEST POINTS O-2 TP300 TP601 O-2
CRT Ref No. Position TRANSISTORS Q-2 Q501 Q-2 Q502 R-2 Q503 CONNECTORS CN501 R-2 WH301B Q-2 WH501B Q-2
8-5
L2305YSCM3
Main CBA Top View
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
TP601 +B
4A/125V
CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used. Also, in order to have the ability to increase the input slowly,when troubleshooting this type power supply circuit, a variable isolation transformer is required.
MAIN CBA Ref No. Position ICS B-1 IC31 D-1 IC111 E-2 IC151 B-2 IC551 C-4 IC601 E-1 IC801 TRANSISTORS C-1 Q31 Q111 E-2 Q321 C-1 B-3 Q571 B-2 Q572 B-4 Q601 B-4 Q602 C-3 Q662 C-3 Q671 C-2 Q675 C-2 Q676 D-3 Q681 D-3 Q682 D-3 Q683 CONNECTORS A-1 CN301 A-3 CN571 C-4 CN691 D-1 CN801 WH301A C-2 WH501A A-2 TEST POINTS A-3 TP300 A-4 TP601 VARIABLE RESISTOR VR661 A-1
FOCUS-VR (UPPER SIDE)
SCREEN-VR (LOWER SIDE) TP300 GND
VR661 +B ADJ
8-6
BL2300F01011-1
Main CBA Bottom View
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. CAUTION ! : For continued protection against risk of fire, replace only with same type 4 A, 125V fuse. ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used. Also, in order to have the ability to increase the input slowly,when troubleshooting this type power supply circuit, a variable isolation transformer is required.
4A/125V
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
WF8 Q571 Base WF7 Q572 Collector WF9 PIN 1 OF CN571 WF12 PIN 4 OF CN571 WF10 PIN 3 OF WH501A WF11 PIN 7 OF IC551 WF1 PIN 2 OF IC31 WF16 PIN 8 OF TU1 WF6 PIN 9 OF IC31 WF2 PIN 14 OF IC111
8-7
BL2300F01011-1
CRT CBA Top View
CRT CBA Bottom View
CRT CBA Ref No. Position TRANSISTORS Q501 B-2 B-2 Q502 B-2 Q503 CONNECTORS CN501 A-1 WH301B B-1 WH501B B-1
WF4 Q502 Base
WF14 Q502 Collector
WF3 Q501 Base
WF15 Q501 Collector
WF13 Q503 Collector WF5 Q503 Base
8-8
BL2300F01011-2
WAVEFORMS
WF1 ~ WF16 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) INITIAL POSITION: Unplug unit from AC outlet for at least 5 minutes. reconnect to AC outlet and then turn power on. (Brightness---Center Color---Center Tint --- Center Contrast---Approx 70%)
GND
GND
WF1
1DIV: 0.5V 20µs IC 31 Pin 2
WF5
1DIV: 2V 20µs Q 503 Base
WF2
1DIV: 0.5V 20µs IC 111 Pin 14
WF6
1DIV: 0.2V 20ms IC 31 Pin 9
GND
GND
WF3
1DIV: 2V 20µs Q501 Base
WF7
1DIV: 10V 20µs Q 572 Collector
GND
WF4
1DIV: 2V 20µs Q 502 Base
9-1
WF8
1DIV: 5V 20µs Q 571 Base
L2210MWF
WF1 ~ WF16 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.) Input: NTSC Color Bar Signal (with 1kHz Audio Signal) INITIAL POSITION: Unplug unit from AC outlet for at least 5 minutes. reconnect to AC outlet and then turn power on. (Brightness---Center Color---Center Tint --- Center Contrast---Approx 70%)
GND
WF9
1DIV: 200V 20µs CN 571 Pin 1
WF13 1DIV: 20V 20µs Q 503 Collector
GND
WF10 1DIV: 5V 20µs WH501A Pin 3
WF14 1DIV: 20V 20µs Q 502 Collector
GND
WF11 1DIV: 1V 5ms IC 551 Pin 7
WF15 1DIV: 20V 20µs Q 501 Collector
WF12 1DIV: 10V 5ms CN 571 Pin 4
9-2
WF16 1DIV: 0.2V 20µs TU 1 Pin 8
L2210MWF
WIRING DIAGRAM
SP801 SPEAKER CLN801 CN801 1 SPEAKER 2 SP-GND
ANODE
TU1 TUNER UNIT V501 CRT
MAIN CBA
CN691 CLN551 GND CN501 FOCUS T571 FBT SCREEN 1 2
WH301B +8V GND RED GREEN BLUE
1 2 3 4 5
CLN301
1 2 3 4 5
WH301A +8V GND RED GREEN BLUE
CRT CBA
WH501B +160V 1 GND 2 HEATER 3
CLN501
WH501A 1 +160V 2 GND 3 HEATER
DY551 D.Y. HD
CN571 1 2 3 4 5
VD
(NO CONNECTION) CN301 1 NU 2 I2C-OPEN 3 GND 4 SDA 5 SCL CN301 IS USED FOR ADJUSTMENT AT FACTORY
AC601
10-1
L2305YWI
IC PIN FUNCTION DESCRIPTIONS
IC111 (TV Micro Controller)
Pin No. 1 2 3 4 5 6 7 8 9 Signal Name GND NU NU NU GND VCC NU FILT HLF GND Not Used Not Used Not Used GND AL+5V Not Used FILT Filter for CCD VHOLD Input for Video Signal RESET RESET Signal Output Composite Signal Output GND 3.58MHz Crystal CHROMINANCE APC Micro controller Control Voltage Output Not Used Not Used Not Used VCC (GND) Composite Signal Input 2 Audio Signal Input 2 Composite Signal Input 1 Audio Signal Input 1 5.7V Output Not Used Not Used DC 8.7V Input Clock Output 3.58MHz Not Used Not Used 59 NU 60 NU 61 NU 62 NU 63 EXT-H 64 A-MUTE-H 65 NU 66 KEY-IN1 67 PROTECT-2 68 PROTECT-1 69 KEY-IN2 70 RCV-IN 71 NU Function Pin No. Signal Name Not Used V Ramp Feed Back Vertical Output V Ramp OSC Capacitor DC 8.7V Output Not Used H Vco Feed Back Horizontal AFC Filter GND Flyback Pulse Input H Pulse Output Vcc Vcc Vcc Red Output Green Output Blue Output IB-Input Not Used Not Used I2C-BUS Controller Interface (Data) Not Used I2C-BUS Controller Interface (Clock) (GND) Not Used (+5V) Not Used EXT-H Audio Mute Not Used Key Input 1 (Main) Power Supply Protection Power Supply Protection Key Input 2 (Main) Input For Remote Control Not Used Function
36 NU 37 V RAMP F/B 38 V RAMP OUT 39 V RAMP CAP 40 8.7 VREG OUT 41 NU 42 H VCO F/B 43 AFC FILT 44 GND 45 FBP IN 46 H-OUT 47 VCC 48 VCC 49 VCC 50 R OUT 51 G OUT 52 B OUT 53 ACL 54 NU 55 NU 56 SDA 57 NU 58 SCL
10 VHOLD 11 CVIN 12 RESET 13 MCU RESET OUT
14 Y-SW OUT 15 GND 16 3.58 X'TAL 17 C-APC 18 MCU 5.7REG OUT
19 NU 20 NU 21 NU 22 VCC 23 NU 24 CVBS IN2 25 AUDIO IN2 26 CVBS IN1 27 AUDIO IN1 28 5.7V REG OUT 29 NU 30 NU 31 V REG VCC 32 FSC OUT 33 NU 35 NU
34 AUDIO ATT OUT Audio Signal Output
11-1
L2210PIN
Pin No.
Signal Name
Function White Balance Adjustment Judgement AFT Voltage Input Not Used AGC Voltage Input Power Supply Protection Not Used Not Used Output for P-ON-H Not Used
72 I2C OPEN 73 AFT 74 NU 75 AGC-IN 76 PROTECT-3 77 NU 78 NU 79 P-ON-H 80 NU
11-2
L2210PIN
EXPLODED VIEWS
Cabinet
SHINWHA TAPE SGT-730 (BLACK) V501-2 Details for DY551 and surrounding parts SHINWHA TAPE SGT-730 (WHITE)
V501-1
L2 DY551
L2
A4
ANODE CAP Part of Flyback Transformer B8 B6
CLN801
A3 L2 L3
B2
SCOTCH TAPE #880
CLN551 DY551 CRT CBA B5 L2 B2 PB2 B6 DG691 PL1 B8 L2
L1 B4
SP801
B9
B2
SCOTCH TAPE #880 PL1 B1 B3 V501 B2 MAIN CBA
PB1 PB3
AC601 B7 A1
See Electrical Parts List for parts with this mark.
A2
12-1
L2310CEX
Packing
S2 Some Ref. Numbers are not in sequence. S2 S5
S3 S3 S4 X2 X3
X1
TAPE
X5 PACKING TAPE S1 S6 FR ON
T
12-2
L2310PEX
MECHANICAL PARTS LIST
PRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. NOTE: Parts that are not assigned part numbers (---------) are not available.
Ref. No. DY551# V501# V501-1 V501-2 DY551# V501# V501-1 V501-2 Ref. No. A1 A2 A3 A4# B1 B2 B3 B4 B5# B6# B7 B8 B9 CLN551 CLN801 DG691# L1 L2 L3 SP801 S1 S2 S3 S4 S5 S6 X1# X2 X3 X5 Description FRONT CABINET L2305YF CONTROL PLATE L2305YF REAR CABINET L6400UA RATING LABEL L2305YF SPRING TENSION B0080B0 EM40808 M5 CRT SCREW TD805UF PCB HOLDER L1400UA SPEAKER HOLDER L1400UA Part No. 1EM120308 1EM320400 0EM000683 1EM421137 26WH006 0EM408333 0EM301429 0EM406026 DY551# V501# V501-1 V501-2 V501# Description DEFLECTION YOKE DSE-1922FU(T) CRT A48LRH93X(W)D C.P .MAGNET JH225-014 WEDGE FT-00110W Part No. LLBY00ZSM007 TCRT190PTD01 XM04000BV009 XV10000T4001 LLBY00ZSY008 TCRT190MS011 XM04000BV009 XV10000T4001 TCRT190CP043 LLBY00ZMS024 TCRT190CP044 XM04000BV009 XV10000T4001
CRT TYPE D
DEFLECTION YOKE LLBY00ZSY008 CRT A48LVL095X C.P .MAGNET JH225-014 WEDGE FT-00110W
CRT TYPE E
CRT A48AKH13X01 K
CRT TYPE F
DEFLECTION YOKE KDY3MDD74X CRT A48AKH13X C.P .MAGNET JH225-014 WEDGE FT-00110W
Table 1 (V501 and DY551 Combination)
Note 1: Purity and Convergence Adjustments must be performed following CRT replacement. Refer to Electrical Adjustment Instructions. Note 2: Please confirm CRT Type No. on the CRT Warning Label which is located on the CRT. Then See the Table 1 for V501 and DY551 combination chart. Please refer this CRT, Deflection Yoke combination chart for parts order.
V501: CRT Type No. V501: CRT Part No.
A48JLL90X A48LGS30X A48LRH93X(W)D A48LVL095X A48AKH13X01 K A48AKH13X TCRT190QS009 TCRT190THA01 TCRT190PTD01 TCRT190MS011 TCRT190CP043 TCRT190CP044
LABEL CRITICAL PARTS WARN ING B8007C3 24LH199 EM41210 DEGAUSS HOLDER L2401UB AC CORD HOLDER L1400UA CLOTH L9800UA 95X15XT 0 0.5 CLOTH(10X30XT1.0) L9814UQ CRT GND WIRE WIRE ASSEMBLY SPEAKER WIRE(220MM) DEGAUSSING COIL AVDG176 SCREW P-TIGHT 3X12 BIND HEAD+ SCREW P-TIGHT 4X18 BIND HEAD + SCREW TAPPING M4X14 SPEAKER S08F02B 1EM420205 0EM406104 0EM405041 0EM405137 WX1L7820-003 WX1L7950-001 LLBH00ZWR050 GBMP3120 GBMP4180 DBU14140 DSD0808XQ010
DY551: Deflection Yoke Part No.
LLBY00ZMS013 LLBY00ZMS016 LLBY00ZSM007 LLBY00ZSY008 -----------LLBY00ZMS024
PACKING
CARTON L2305YF STYRFOAM TOP ASSEMBLY L9814UQ STYRFOAM B0TTOM ASSEMBLY L6100UA SET SHEET L1400UA 1000X1500 HOLD PAD L6100UA SERIAL NO. LABEL L2305YF 1EM421136 0EM405094 0EM406813 0EM406680 0EM406812 1EM421138 1EMN20413 NE121UD XB0M451T0001 0EM408420
CRT Warning Label Location
CRT Type No. CRT Warning Label
ACCESSORIES
OWNERS MANUAL(E)/(S) ENGLISH/SPANISH REMOTE CONTROL NE121UD DRY BATTERY R6P/2S BAG POLYETHYLENE 235X365XT0.03
Note: 1. V501 (CRT) HAS COUPLE OF SUBSTITUTIONAL PARTS AND EACH PARTS ALSO HAS MATCHING COMBINATION WITH DY551. PLEASE SEE TABLE 1 FOR DETAILS OF MATCHING COMBINATION. 2. DY551 (DEFLECTION YOKE) HAS MATCHING COMBINATION WITH V501. PLEASE SEE TABLE 1 FOR DETAILS OF MATCHING COMBINATION.
CRT TYPE A
DY551# V501# V501-1 V501-2 DY551# V501# V501-1 V501-2 DEFLECTION YOKE KDY3MDA84X CRT A48JLL90X C.P .MAGNET JH225-014 WEDGE FT-00110W LLBY00ZMS013 TCRT190QS009 XM04000BV009 XV10000T4001
CRT TYPE B
DEFLECTION YOKE KDY3MCB20X CRT A48LGS30X C.P .MAGNET JH225-014 WEDGE FT-00110W LLBY00ZMS016 TCRT190THA01 XM04000BV009 XV10000T4001
CRT
CRT TYPE C
20050701
13-1
L2305CA
ELECTRICAL PARTS LIST
PRODUCT SAFETY NOTE: Products marked with a # have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. NOTES: 1. Parts that are not assigned part numbers (---------) are not available. 2. Tolerance of Capacitors and Resistors are noted with the following symbols. C.....±0.25% G.....±2% M.....±20% D.....±0.5% J......±5% N.....±30% F.....±1% K.....±10% Z.....+80/-20%
Ref. No. C133 C151 C152 C153 C155 C156 C301 C302 C303 C306 C308 C321 C322 C323 C324 C328 C329 C330 C341 C342 Description MMA CBA Consists of the following: MAIN CBA CRT CBA Part No. 0ESA05979 ------------------C343 C345 C347 C349 C351 C352 C353 Description MAIN CBA Consists of the following: Part No. --------C362 C551 C552 C554 CE1AMASTL101 CE1JMASTL4R7 CE1AMASTL101 CHD1JKB0B103 CE1JMASTLR47 CHD1JJBCH560 CHD1JKB0B102 CE1JMASTL1R0 CHD1JKB0B153 CE1JMASTLR47 CHD1JKB0B102 CHD1JKB0B103 CE1AMASTL101 CHD1JKB0B103 CHD1JKB0B103 JW5.0T CMA1JJS00473 CMA1JJS00333 CE1CMASTL470 CE1JMASTL100 CHD1EZB0F104 CMA1JJS00102 CE1JMASTLR10 CHD1JJBCH221 CHD1JKB0B103 CHD1JKB0B153 CE1AMASTL101 CHD1JKB0B103 CHD1EZB0F104 C562 C566 C568 C571# C574# C577# C578 C580# C581# C584# C594# C601# C605 C606 C609 C610# C611 C612 C616 C617 C642# C643# C643# JS642 C650 C651 C654# Description CHIP CERAMIC CAP B K 0.01µF/50V . CHIP CERAMIC CAP B K 0.01µF/50V . CERAMIC CAP .(AX) B K 220pF/50V CERAMIC CAP .(AX) B K 220pF/50V ELECTROLYTIC CAP 47µF/16V M . CHIP CERAMIC CAP F Z 0.1µF/25V . CHIP CERAMIC CAP CH J 120pF/50V . ELECTROLYTIC CAP 1µF/50V M . CHIP CERAMIC CAP B K 0.015µF/50V . ELECTROLYTIC CAP 100µF/10V M . ELECTROLYTIC CAP 0.1µF/50V M . PCB JUMPER D0.6-P5.0 ELECTROLYTIC CAP 0.47µF/50V M . ELECTROLYTIC CAP 1µF/50V M . ELECTROLYTIC CAP 10µF/50V M . ELECTROLYTIC CAP 10µF/50V M . CHIP CERAMIC CAP B K 0.01µF/50V . TF CAP 0.47µF/50V J . CHIP CERAMIC CAP B K 0.01µF/50V . ELECTROLYTIC CAP 1µF/50V M . CHIP CERAMIC CAP B K 0.01µF/50V . ELECTROLYTIC CAP 470µF/10V M . ELECTROLYTIC CAP 100µF/10V M . ELECTROLYTIC CAP 470µF/10V M . CHIP CERAMIC CAP CH J 100pF/50V . CHIP CERAMIC CAP CH J 100pF/50V . ELECTROLYTIC CAP 1µF/50V M . ELECTROLYTIC CAP 2.2µF/50V M . ELECTROLYTIC CAP 47µF/35V M . FILM CAP 0.1µF/50V J .(P) ELECTROLYTIC CAP 470µF/35V M(VR) . ELECTROLYTIC CAP 2.2µF/50V M LL . ELECTROLYTIC CAP 1000µF/25V M . ELECTROLYTIC CAP 10µF/50V M . PP CAP 0.47µF/250V J . ELECTROLYTIC CAP 4.7µF/250V M . ELECTROLYTIC CAP 47µF/35V M . FILM CAP 0.01µF/50V J .(P) PP CAP 0.01µF/1.6KV J . CERAMIC CAP LB 1000pF/2KV . ELECTROLYTIC CAP 1µF/160V M . ELECTROLYTIC CAP 10µF/50V M . METALLIZED FILM CAP 0.22µF/250V . CERAMIC CAP F Z 0.01µF/500V . CERAMIC CAP F Z 0.01µF/500V . CERAMIC CAP B K 1000pF/2KV . ELECTROL