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SERVICE MANUAL
32" COLOR TELEVISION
SRT2232X
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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
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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 (10mV input) - MHz ±2.2 ±0.7 Description Condition Unit Nominal Limit 1. Deflection Freq. Horizontal KHz 15.734 - Vert
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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. age current tester or a metering system that com- Safety Precautions for TV Circuit plies with American National Standards Institute 1. Before returning an ins
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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
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3) Align the lengths of the wires to be connected. In- Precautions during Servicing 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 conforman
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Safety Check after Servicing Examine the area surrounding the repaired location Chassis or Secondary Conductor for damage or deterioration. Observe that screws, 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') betwe
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STANDARD NOTES FOR SERVICING (2) Remove the flat pack-IC with tweezers while ap- Circuit Board Indications 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
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With Soldering Iron: soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (1) Using desoldering braid, remove the solder from 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 Desoldering Braid Flat Pack-IC ensure that the
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2. Installation Instructions for Handling Semiconductors (1) Using desoldering braid, remove the solder from 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 Bod
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CABINET DISASSEMBLY INSTRUCTIONS Note: 1. Disassembly Flowchart (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 the
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S-1 S-1 S-1 [3] Main CBA S-2 S-4 S-1 [1] Rear Cabinet Fig. 1 Fig. 3 Anode Cap S-1 S-3 S-1 S-1 S-4 S-2 S-3 S-3 S-1 S-1 S-1 S-1 S-3 [4] CRT [1] Rear Cabinet Fig. 2 Fig. 4 4-2 L6650DC
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TV Cable Wiring Diagram SP802 SP801 L691 DEGAUSSING COIL CLN802 CLN801 MAIN CBA CN801 CN802 WH301A CN691 TU1 FLYBACK TRANSFORMER TUNER T571 WH501A CN571 AC601 AC CORD FOCUS SCREEN WH301B WH501B ANODE CN1501 Fig. 5 TO CRT GROUND 4-3 L6650DC
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ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note: How to set up the service mode: "CBA" is abbreviation for "Circuit Board Assem- Service mode: bly." 1. Use the service remote control unit. NOTE: 2. Turn the power on. (Use main power on the TV Electrical adjustments are required after replacing unit.) circuit components and certain mechanical parts. 3. Press "SLEEP" button on the service remote con- It is important to perform these adjustments only trol unit. Version of micro computer will displ
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2. Initial Setting 3. AV Memory Setting data General General 1. Enter the Service mode. (See page 5-1) 1. Enter the Service mode. (See page 5-1) 2. Press "VOL p" button on the service remote control 2. When “AV MEMORY” setting to “ON” (refer to “2-1. unit. Display changes "C/D," "7F," "LANGUAGE," Setting for 7F, CHROMA, LANGUAGE, STEREO "ACCESS CODE," "SOUND TYPE," "VIDEO TYPE, ACCESS CODE, STABLE SOUND, COMB TONE," "FM MODE," "V-OUT," "VIDEO," "AV FILTER, COMPONENT and AV MEMORY data MEMO," "
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S-TNT 4. Setting for BRIGHT, CONTRAST, 1. Press "MENU" button on the service remote con- COLOR, TINT and SHARPNESS trol unit. Then select "S-TINT" (S-TNT) display. data Values 2. Press "CH o/p" buttons on the service remote General control unit so that the value of "S-TINT" (S-TNT) 1. Enter the Service mode. (See page 5-1) becomes 59. 2. Press "MENU" button on the service remote control C-TNT unit. Display changes "BRT," "CNT," "CLR," "S- 1. Press "MENU" button on the service remote con- CLR,"
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5. Black Stretch Control Adjustment Purpose: To show the fine black color. SD Check mode (Factory mode) Symptom of Misadjustment: Black color will not Press "1" buton. appear correctly. Note: Use service remote control unit. 1. Enter the Service mode. (See page 5-1) 7 2. Press "6" button on the service remote control unit. Please wait "B-S" is indicated. OSD color: 3. Press "CH o / p" buttons on the service remote con- Magenta trol unit so that display will change "OFF," "0," and There is n
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8. H. Position Adjustment 10. V. Position Adjustment Purpose: To obtain correct horizontal position of Purpose: To obtain correct vertical width of screen image. screen image. Symptom of misadjustment: If V. Position is incor- Symptom of Misadjustment: If H. Position is incor- rect, vertical height of image on the screen may not be rect, horizontal position of image on the screen may properly displayed. not be properly displayed. Test Point Adj. Point Mode Input Test Point Adj. Point Mode Input
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12. V-Pedestal Adjustment 15. PIN Cushion Adjustment 1. In VIDEO mode of V1, V2, or YUV, press "3" button Purpose: To obtain correct straight vertical line of on the service remote control unit and select "V- screen image. PED" mode. (Display changes "U-PED" and "V- Symptom of Misadjustment: If H.Pin cushion is incor- PED" cyclically when "3" button is pressed). rect, vertical line of image on the screen may not be properly displayed. 2. Switch the VIDEO mode to YUV. (Refer to “2. Initial Sett
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16. Cut-off Adjustment 17. White Balance Adjustment Purpose: To adjust the beam current of R, G, B, and Purpose: To mix red, green and blue beams correctly screen voltage. for pure white. Symptom of Misadjustment: White color may be Symptom of Misadjustment: White becomes bluish reddish, greenish or bluish. or reddish. Test Point Adj. Point Mode Input Test Point Adj. Point Mode Input Screen-Control White Black --- CH o / p RF CH o / p Raster Raster Screen RF buttons buttons (APL Tape M. EQ
