Page 1 MTNC040108A1 Color Television CT-24SL14J / CT-24SL14UJ / CT-27SL14J / CT-27SL14UJ GN3 (NA10) This simplified service manual is issued to add listed models to the NA10 family service manuals order No.MTNC030733A1(CT- 27SL13G), MTNC030834A1(CT-24SL13G) & MTNC030623C1(CT- 25L8G). A complete parts list and schematics are included in thissimplified service manual.
Page 2: Safety Precautions
1. Safety precautions General guidelines An isolation transformer should always be used during the servicing of a receiver whose chassis is not isolated from AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injuryfrom electrical shocks. It will also protect the receiver from being damaged by accidental shorting that may occur during servicing.
Page 3 Unplug the A.C. cord and connect a jumper between the two plug prongs.Measure the resistance between the jumpered AC plug and expose metallic parts such as screwheads, antenna terminals, control shafts, etc. If the exposed metallic part has a returnpath to the chassis, the reading should be between 240k and 5.2M .
Page 4: Service Notes
Measure the high voltage. The high voltage should be 30.55 ± 1.25kV for 24” CRT and 29.25 ± 1.25kV for 27” CRT. If the upper limit is out of tolerance, immediate service andcorrection is required to insure safe operation and to prevent the possibility of premature component failure. Horizontal oscillator disable circuit test This test must be performed as a final check before the receiver is returned to the customer.
Page 5 1. Put a small amount of solder on the board soldering pads. 2. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds.
Page 6 4. Position the new Flat IC in place (apply the pins of the Flat IC to the soldering pads where the pins need to be soldered). Properly determine the positions of the soldering pads and pins by correctly aligning the polarity symbol 5.
Page 7 chassis. Connect the test equipment to the proper ground(hot) or (cold) when servicing, or incorrect voltages will be measured. 2.1. X-Ray Protection Circuit Check & Adjustments This test must be performed as final check before the receiver is returned to the customer. If voltages are out of tolerance, immediate service and correction is required to insure safe operation and to prevent the possibility of premature componentfailure.
Page 8: Eeprom Replacement
5. Apply a monoscope pattern. 6. Set customer picture and brightness controls to the minimum. 7. Set current within 50 A to 100 A by changing the picture and bright controls. 8. Slowly increase AC voltage at the input of the isolation transformer and confirm HHS voltage measure 34.5kV.
Page 9: About Lead Free Solder (Pbf)
the same procedure as step 4. 6. When replacing a new EEPROM be sure to set the correct ID switch values for each model. 7. Once that all 3 registers are set with the correct address value, perform all of the remaining adjustments and servicing. IMPORTANT: Correct ID switch configuration should be input when replacing EEPROM for each television model, otherwise if wrong values are...
Page 10: Receiver Feature Table
opposite side. Suggested Pb free solder There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also beused. 5. Receiver feature table...
Page 11: Board Description Table
COMPONENT INPUT (Y, Pb, Pr) S-VIDEO INPUT (REAR/FRONT) EPJ/HPJ/MISC DIMENSIONS(WxDxH) 695.16x464x538.46mm27.36x18.26x21.19in 754.3x534.3x601.6mm29.69x21.03x23.68in WEIGHT (Kg/Lbs) 34 / 74.95 35.4 / 78.04 Note: Specifications are subject to change without notice or obligation. Dimensions and weights are approximate. 6. Board description table CT-24SL14J / CT-24SL14UJ...
Page 12 BOARD PART NUMBER DESCRIPTION TNP2AH060DB MAIN BOARD TNP2AA157AN CRT BOARD CT-27SL14J / CT-27SL14UJ BOARD PART NUMBER DESCRIPTION TNP2AH060MA MAIN BOARD TNP2AA157AR CRT BOARD NOTE When ordering a replacement board assembly, append an “S” to the board number EXAMPLE To order the A Board, for CT-27SL14J the replacement board is TNP2AH060MAS. 7.
Page 13: Location Of Controls (Remote)
8. Location of controls (remote) 8.1. EUR7613ZB0...
Page 14 Note: For additional information about this remote please refer to the owner’s manual section remote operation, listed on the parts list section. 9. Dissasembly for service Back cover Remove all the screws marked with an arrow ( ) from the back of the receiver NOTE Screw configuration, type, and number of screws vary depending on the model of the receiver serviced and the application;...
Page 15 A-Board - Main chassis 1. Slide the chassis completely out of the guide rails. 2. Stand the receiver on its edge. The underside of the board is completely accessible for component replacement. Note: Some tie-wraps that secure the wire dressings may need to be unfastened for chassis removal. C-Board - CRT output The board plugs onto the socket on the CRT neck.
Page 16 4. Remove the C-Board from the CRT base and unplug the black wires (CRT dag ground) C11 & C21. 5. Disconnect the speakers plug from the A-Board. 6. Lift the main chassis (A-Board) and all mounted boards completely out with the CRT board attached. 7.
Page 17 When ordering the CRT, please order CRT and CRT kit also. Please see parts list section for part numbers. 9.2. Back cover removal Back Cover 9.3. Inside View...
Page 18: Chassis Service Adjustment Procedures
10. Chassis service adjustment procedures All service adjustments are factory preset and should not require adjustment unless controls and/ or associated components are replaced. Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use IC801’s heat sink when the HOT ground symbol is used. Otherwise, use COLD ground (tuner shield, IC451’s heat sink or FA2).
Page 19 Note: Components and test points within doted areas are located on trace side. B+ voltage check 1. Set the BRIGHT and PICTURE to minimum by using the PICTURE menu. 2. Connect the DVM between C825 (+ side) or TPD14 and cold ground.
Page 20 A-BOARD TEST VOLTAGE POINT 24” CRT 27” CRT TPD14 131.0 ± 2.0V 131.0 ± 2.0V SOUND C823 (+) 22.7 ± 1.0V 22.7 ± 1.0V STB12V C827 (+) 12.8 ± 1.0 V 12.8 ± 1.0 V 220V TPA14 205 ± 10 V 217 ±...
Page 21: Important Note
5. Adjust VOLUME to minimum (0). 6. Press VOL (decrease) on receiver. Red “CHK” appears in upper corner. To toggle between aging and service modes: While the “CHK” is displayed on the left top corner of the CRT, pressing “ACTION” and “VOL” UP on the TV simultaneously will toggle between the modes.
Page 22 If service mode is accessed by this method be sure to reset the set after service is performed. 11.1. Service adjustment default values for items NAME DESCRIPTION REGISTER VALUE CT-24SL14J/UJ CT-27SL14J/UJ MTSIN MTS INPUT LEVEL SEPAL MTS LOW LEVEL SEPARATION...
Page 23: Service Adjustments (Electronic Controls)
NAME DESCRIPTION REGISTER VALUE CT-24SL14J/UJ CT-27SL14J/UJ TRAP TRAPEZOID PCCHG PINCUSHION HIGH PCCLG PINCUSHION LOW PCCHS PINCUSHION HIGH PCCLS PINCUSHION LOW TOPSL TOP CORNER PINCUSHION SLICE LEVEL BTMSL BOTTOM CORNER PINCUSHION SLICE LEVEL VEAMP VERTICAL SIZE VERTICAL LINEARITY VERTICAL SIZE CORRECTION...
Page 24 3. Set COLOR control to minimum (no color on picture). 4. Set the BRIGHTNESS control to the center. 5. Set the SHARPNESS control to the center. 6. Connect the oscilloscope to TP35. Procedure 1. In the service mode, select DAC for brightness adjustment “BRIGH”, and adjust data to obtain “a”(3.7±0.1V for 24”...
Page 25 2. Set the BRIGHTNESS control to minimum. 3. Set the COLOR control to the center. 4. Set the TINT control to the center. 5. Set the PICTURE control to the maximum. 6. Set the SHARPNESS control to the minimum. PROCEDURE 1.
Page 26 (NO RAINBOW PATTERN) Make sure that sub-contrast adjustment was finished prior to perform this adjustment PREPARATION Normalize the picture settings. PROCEDURE 1. Apply a color bar pattern. 2. In service mode adjust “R DR” and “B DR” data to “80”. 3.
Page 27 adjustments, select drive R DR, B DR and adjust the picture for warm whites. Complete adjustment PREPARATION 1. Turn the receiver “ON” and allow 30 minutes warm up at WHITE PATTERN. 2. Apply a color bar pattern (with no color). 3.
Page 28 10. Apply a normal signal and confirm that the image is normal and a good gray scale 11. If correction is needed perform minor touch-up method. 12.5. Deflection adjustments To reset deflection adjustments To reset deflection adjustments to factory adjusted default, enter to service mode (with red CHK displayed), press POWER button on remote to display the service menu, then press and hold RECALL button for at least three seconds, a reset messagewill appear in the image.
Page 29 2. If the horizontal center is not aligned, in service mode adjust “H POS” DATA to adjust the horizontal center of the monoscope pattern to the CRT center. 3. Verify that horizontal width (A & B mark) is within 4.5 ± 0.7. 12.5.2.
Page 30 12.5.3. V-S Correction adjustment PREPARATION 1. Apply a crosshatch pattern 2. Normalize the picture settings. PROCEDURE 1. Enter to service mode 2. Check a and b sizes, If b-a < -1.5mm (in top & bottom extending case) - Increase “V-S” DATA by one step NOTE Repeat “a”...
Page 31 The MTS circuit adjustments require two steps: 1. Input level adjustment. 2. Stereo separation adjustment. Input level adjustment / Service DAC adjustment (MTSIN) PREPARATION 1. Connect an RMS meter with filter jig as shown in figure to TPE11. Filter Jig 2.
Page 32 2. Apply the following signal from the RF signal generator: - Video: 100 IRE flat field, 30% modulation. - Audio: 300Hz, 30% modulation, stereo (left only) (70±5dB, 75 OPEN, P/S 10dB). NOTE After setting 30% modulation with P.L. SW and N.R. SW OFF, turn P.L. SW and N.R. SW 3.
Page 33: Identification Of Main Components
NOTE 3. TP017 (IC001 pin 79) measurement must have at least four digits of resolution following the decimal point. Example: 000.0000 4. Place the receiver into service mode for making electronic adjustment, select the clock adjustment DAC “CLOCK”. 5. Calculate and set “CLOCK” based on the following formula: NOTE TP017 (IC001 pin 79) measurement will not change regardless of the value stored in CLOCK.
Page 34 13.2. C-Board main components C-Board main components 14. Reference for PDF colors...
Page 35: Conductor Views
15. Conductor views 15.1. A-Board printed circuit (1 of 2) 15.2. A-Board printed circuit (2 of 2) 15.3. C-Board printed circuit 16. Block diagrams 16.1. Video Signal Block Diagram 16.2. Audio Signal Block diagram 17. Schematics 17.1. English schematic notes...
Page 37 17.2. Notas de esquem á ticos en espa ñ ol...
Page 39: Parts Location
17.3. A-Board schematic TNP2AH060DB (1 of 4) 17.4. A-Board schematic TNP2AH060DB (2 of 4) 17.5. A-Board schematic TNP2AH060DB (3 of 4) 17.6. A-Board schematic TNP2AH060DB (4 of 4) 17.7. A-Board schematic TNP2AH060MA (1 of 4) 17.8. A-Board schematic TNP2AH060MA (2 of 4) 17.9.
Page 40 19.2. Parts list...
Page 41 C004 TCJ2VC1H150J CAP C 15PF-J-50V C005 TCJ2VC1H150J CAP C 15PF-J-50V C008 TCJ2VF1H103Z CAP C .01UF-Z-50V C009 ECJ2VB1C104K CAP C .1UF-K-16V / CT-24SL14J CT-24SL14UJ C009 ECJ2VF1H104Z CAP C .1UF-Z-50V C010 TCJ2VC1H680J CAP C 68PF-J-50V C011 TCJ2VC1H680J CAP C 68PF-J-50V C012 ECJ2VB1C104K CAP C .1UF-K-16V...
Page 42 ECA1EM102E CAP E 1000UF-25V C458 ECA1HM010B CAP E 1UF-50V C459 ECA1VHG471B CAP E 470UF-35V C460 ECQB1224KF3 CAP P .22UF-K-100V C461 ECQB1104JF3 CAP P .10UF-J-100V C462 TCJ2VF1H103Z CAP C .01UF-Z-50V / CT-27SL14J CT-27SL14UJ C462 TCJ2VF1H683Z CAP C 68UF-Z-50V / CT-24SL14J CT-24SL14UJ...
Page 43 ECCR2H100D5 CAP C 10PF-D-500V C512 ECA2CM100B CAP E 10UF-160V C531 ECA1HM4R7B CAP E 4.7UF-50V C540 ECJ2VF1C105Z CAP C 1.0UF-Z-16V / CT-24SL14J CT-24SL14UJ C540 ECJ2VF1H103Z CAP C .01UF-Z-50V / CT-24SL14J CT-24SL14UJ C540 TCJ2VF1H103Z CAP C .01UF-Z-50V C551 ECA1VM471B CAP E 470UF-35V...
Page 44 Ref. No. Part No. Part Name & Description Remarks C803 ECKWAE472ZED CAP C .0047UF-Z-250V C805 EC0S2DA471BB CAP E 470UF-200V C806 ECQM4103KZW CAP P .01UF-K-400V C808 ECA1HM470B CAP E 47UF-50V C809 TACCW471T50V CAP C 470PF-K-50V C810 TACCW471T50V CAP C 470PF-K-50V C812 ECQU2A224MLA CAP P .22UF-M-250V C812...
Page 45 Ref. No. Part No. Part Name & Description Remarks C2216 TCJ2VC1H100D CAP C 10PF-J-50V C2217 ECJ2VB1H102K CAP C .001UF-K-50V C2218 ECJ2VB1H102K CAP C .001UF-K-50V C2219 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C2220 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C2301 ECA1EM102E CAP E 1000UF-25V C2302 ECA1HM010B CAP E 1UF-50V C2304...
Page 46 Ref. No. Part No. Part Name & Description Remarks C3234 ECA1CM470B CAP E 47UF-16V C3240 TCJ2VF1H103Z CAP C .01UF-Z-50V C4322 ECA1CM100B CAP E 10UF-16V C4323 ECA1CM470B CAP E 47UF-16V C4324 TCJ2VF1H103Z CAP C .01UF-Z-50V C4325 ECA1CM100B CAP E 10UF-16V C4801 TCJ2VC1H101J CAP C 100PF-J-50V / CT-27SL14J CT-27SL14UJ C4802...
Page 47 Ref. No. Part No. Part Name & Description Remarks D822 B0HAMM000103 DIODE D823 S3L60P154004 DIODE D824 B0HAMM000072 DIODE FAST RECOVERY D2302 MAZ43000MF DIODE ZENER D2305 CVS20B120MTA DIODE ZENER D2307 CVS20B120MTA DIODE ZENER D2350 MAZ41000LF DIODE ZENER D2353 MA2C165001VT DIODE D2354 MA2C165001VT DIODE D2355...
Page 48 FERRITE BEAD L245 EXCELSA35T FERRITE BEAD L312 EXCELSA24T FERRITE BEAD L551 ELH5L7138 HORIZONTAL LINEARITY COIL / CT-27SL14J CT-27SL14UJ L551 ELH5L7139 HORIZONTAL LINEARITY COIL / CT-24SL14J CT-24SL14UJ L552 EXCELSA39V EMI BEAD CORE L558 ELC10D471E CHOKE COIL L751 ELC18B301E COIL CHOKE L752 ELC18B103E...
Page 49 Ref. No. Part No. Part Name & Description Remarks Q057 2PB709AR-115 TRANSISTOR Q058 2PB709AR-115 TRANSISTOR Q070 2PD601AR-115 TRANSISTOR Q092 2PB709AR-115 TRANSISTOR Q354 2PD601AR-115 TRANSISTOR Q355 2PD601AR-115 TRANSISTOR Q356 2PD601AR-115 TRANSISTOR Q357 2PD601AR-115 TRANSISTOR Q358 2PD601AR-115 TRANSISTOR Q359 2PD601AR-115 TRANSISTOR Q360 2PB709AR-115 TRANSISTOR Q361...
Page 50 Ref. No. Part No. Part Name & Description Remarks RESISTORS R001 ERJ6GEYJ103V RES M 10K-J-1/10W R004 ERJ6GEYJ562V RES M 5.6K-J-1/10W R005 ERJ6GEYJ471V RES M 470-J-1/10W R007 ERJ6GEYJ471V RES M 470-J-1/10W R008 ERJ6GEYJ223V RES M 22K-J-1/10W R009 ERJ6GEYJ102V RES M 1K-J-1/10W R014 ERJ6GEYJ472V RES M 4.7K-J-1/10W...
Page 51 ERDS1TJ104T RES C 100K-J-1/2W R359 ERDS1TJ104T RES C 100K-J-1/2W R360 ERDS1TJ104T RES C 100K-J-1/2W R361 EROS2THF5601 RES M 5.6K-F-1/4W / CT-24SL14J CT-24SL14UJ R361 EROS2THF6801 RES M 6.8K-F-1/4W / CT-27SL14J CT-27SL14UJ R362 EROS2THF2001 RES M 2K-F-1/4W R363 ERC12GK102D RES C 1K-K-1/2W...
Page 52 ERDS1FJ1R0P RES C 1.0-J-1/2W / CT-27SL14J CT-27SL14UJ R452 ERDS1FJ3R3P RES C 3.3-J-1/2W / CT-27SL14J CT-27SL14UJ R452 ERDS1FJR68P RES C .68-J-1/2W / CT-24SL14J CT-24SL14UJ R453 ERJ6GEYJ303V RES M 30K-J-1/10W / CT-24SL14J CT-24SL14UJ R453 ERJ6GEYJ513V RES M 51K-J-1/10W / CT-27SL14J CT-27SL14UJ R454...
Page 53 RES M 15K-J-1/10W R828 ERJ6GEYJ104V RES M 100K-J-1/10W R829 ERJ6GEYJ104V RES M 100K-J-1/10W R830 ERG2FJ273H RES M 27K-J-2W / CT-24SL14J CT-24SL14UJ R830 ERG3FJ183 RES M 18K-J-3W / CT-27SL14J CT-27SL14UJ R831 ERDS2TJ682T RES C 6.8K-J-1/4W R832 ERJ6GEYJ122V RES M 1.2K-J-1/10W / CT-24SL14J CT-24SL14UJ...
Page 54 Ref. No. Part No. Part Name & Description Remarks R908 ERJ6GEYJ683V RES M 68K-J-1/10W R909 ERJ6GEYJ103V RES M 10K-J-1/10W R951 ERDS2TJ821T RES C 820-J-1/4W R952 ERDS2TJ153T RES C 15K-J-1/4W R953 ERDS2TJ332T RES C 3.3K-J-1/4W R954 ERDS2TJ431T RES C 430-J-1/4W R956 ERDS2TJ121T RES C 120-J-1/4W R958...
Page 55 R3008 ERJ6ENF75R0V RES M 75.0-F-1/10W R3010 ERJ6GEYJ334V RES M 330K-J-1/10W R3013 ERJ6ENF75R0V RES M 75.0-F-1/10W R3014 ERJ6ENF75R0V RES M 75.0-F-1/10W / CT-24SL14J CT-24SL14UJ R3015 ERJ6ENF75R0V RES M 75.0-F-1/10W R3016 ERDS2TJ181T RES C 180-J-1/4W R3017 ERDS2TJ181T RES C 180-J-1/4W R3018 ERDS2TJ101T...
Page 56 TRANSFORMER CRYSTALS / FILTERS X001 A1100005BD CRYSTAL OTHERS TNR001 ENG36A10GF TUNER A60LVY196X-D CRT 24” WITH DEFLECTION YOKE / CT-24SL14J CT-24SL14UJ M68LZP195X CRT 27” / CT-27SL14J CT-27SL14UJ M001 TJS2AC00401 CRT SOCKET TLY2AA033 DEFLECTION YOKE TSP2AA023 DEGAUSSING COIL / CT-24SL14J CT-24SL14UJ TSP2AA026-1...
Page 57 Ref. No. Part No. Part Name & Description Remarks JK3003 TJB2AA0421 S-VIDEO TERMINAL JK3004 TJB2AA0211-1 AUDIO OUT 2 PIN TERMINAL OTHER ACCESSORIES M008 TQB2AA0499 OWNER’S MANUAL M009 EUR7613ZB0 REMOTE CONTROL M010 UR76EC0303E BATTERY COVER (EUR7613ZB0) M011 EUR7613Z6A REMOTE CONTROL M012 UR76EC0303D BATTERY COVER (EUR7613Z6A)
Page 58 A-BOARD 2 of 2 TNP2AH060 CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 59 Audio Switching IC3101 L&R Mixed MPX IN IC2201 JK3001 R-OUT L-OUT REAR AUDIO R-IN L-IN IC2501 R-OUT L-OUT JK3002 R-IN L-IN FRONT VAO-R AUDIO IC2301 AUDIO AMP VAO-L R-OUT L-OUT MUTE JK3004 TO AUDIO SP ON/OFF IC001 CT-24SL14J/UJ, CT-27SL14J/UJ MODELS...
Page 60 C-BOARD 1 of 2 TNP2AA157AN/AR CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 61 C-BOARD 2 of 2 TNP2AA157AN/AR CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 62 C-BOARD TNP2AA157 CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 63 MCOMP IN MV IN MU IN IC001 JK3002 FRONT VIDEO R OUT G OUT B OUT VM OUT MSCIN JK3003 Q360 Q361 Q362 S-VIDEO Q358 Q359 Q357 Q355 Q356 Q354 R-IN G-IN B-IN IC351 R-OUT G-OUT B-OUT C-BOARD CT-24SL14J/UJ, CT-27SL14J/UJ MODELS...
Page 64 ..0.00 ..0.40 ..0.00 ..4.90 ..0.40 ..3.30 ..9.00 CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 65 ..2.50 Q956 Q957 Q958 Q961 Q962 . . . 216.80 0.80 5.80 5.70 0.30 2.40 . . . 145.30 65.20 0.00 8.90 1.80 8.90 . . . 152.70 0.30 6.30 5.10 0.00 1.90 . . . 151.00 CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 66 A12 PIN 2 (HEATER) IC501 PIN 4 (H-DRIVE) IC451 PIN 3 (PUMP UP) IC451 PIN 5 (V OUT) 2.76 Vp-p 408 Vp-p 110 Vp-p .508 KVp-p IC801 PIN 7 IC801 PIN 1 Q501 Collector Q551 Collector (H OUT) CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 67 A-BOARD 1 of 4 TNP2AH060DB CT-24SL14J / CT-24SL14UJ...
Page 68 A-BOARD 2 of 4 TNP2AH060DB CT-24SL14J / CT-24SL14UJ...
Page 69 A-BOARD 3 of 4 TNP2AH060DB CT-24SL14J / CT-24SL14UJ...
Page 70 A-BOARD 4 of 4 TNP2AH060DB CT-24SL14J / CT-24SL14UJ...
Page 71 A-BOARD 1 of 4 TNP2AH060MA CT-27SL14J / CT-27SL14UJ...
Page 72 A-BOARD 2 of 4 TNP2AH060MA CT-27SL14J / CT-27SL14UJ...
Page 73 A-BOARD 3 of 4 TNP2AH060MA CT-27SL14J / CT-27SL14UJ...
Page 74 A-BOARD 4 of 4 TNP2AH060MA CT-27SL14J / CT-27SL14UJ...
Page 75 A-BOARD 1 of 2 TNP2AH060 CT-24SL14J/UJ, CT-27SL14J/UJ...
Page 76 MTNC030733A1 Color Television CT-27SL13G / CT-27SL13UG / CT-27SL33G / CT-27SL33UG NA10 This simplified service manual is issued to add listed models to the main service manual order No. MTNC030623C1 (CT-25L8G). A complete parts list and schematics are included in this simplified service manual.
Page 77: Safety Precautions
1. Safety precautions General guidelines An isolation transformer should always be used during the servicing of a receiver whose chassis is not isolated from AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injuryfrom electrical shocks. It will also protect the receiver from being damaged by accidental shorting that may occur during servicing.
Page 78 terminals, control shafts, etc. If the exposed metallic part has a returnpath to the chassis, the reading should be between 240k and 5.2M . If the exposed metallic part does not have a return path to the chassis, the reading should be infinite. Leakage current hot check Plug the AC cord directly into the AC outlet.
Page 79: Service Notes
the possibility of premature component failure. Horizontal oscillator disable circuit test This test must be performed as a final check before the receiver is returned to the customer. See horizontal oscillator disable circuit procedure check in this manual. 2. Service notes NOTE These components are affixed with glue.
Page 80 2. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds. How to replace flat IC (required tools) 1.
Page 81 4. Position the new Flat IC in place (apply the pins of the Flat IC to the soldering pads where the pins need to be soldered). Properly determine the positions of the soldering pads and pins by correctly aligning the polarity symbol 5.
Page 82 chassis. Connect the test equipment to the proper ground(hot) or (cold) when servicing, or incorrect voltages will be measured. 2.1. X-Ray Protection Circuit Check& Adjustments This test must be performed as final check before the receiver is returned to the customer. If voltages are out of tolerance, immediate service and correction is required to insure safe operation and to prevent the possibility of premature componentfailure.
Page 83: Eeprom Replacement
5. Apply a monoscope pattern. 6. Set customer picture and brightness controls to the minimum. 7. Set current within 50 A to 100 A by changing the picture and bright controls. 8. Slowly increase AC voltage at the input of the isolation transformer and confirm HHS voltage measure 34.5kV.
Page 84: About Lead Free Solder (Pbf)
the same procedure as step 4. 6. When replacing a new EEPROM be sure to set the correct ID switch values for each model. 7. Once that all 3 registers are set with the correct address value, perform all of the remaining adjustments and servicing. IMPORTANT: Correct ID switch configuration should be input when replacing EEPROM for each television model, otherwise if wrong values are...
Page 85: Receiver Feature Table
opposite side. Suggested Pb free solder There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also beused. 5. Receiver feature table...
Page 86: Board Description Table
FEATURE/MODEL CT-27SL13G/UG CT-27SL33G/UG CHASSIS BP405 DP405 MICRO 128K MENU LANGUAGE ENG/SPAN/FR CLOSED CAPTION V-CHIP (USA/CANADA) CHANNEL COUNT PIP (1T), 2T PIP (2T), 2T SPLIT not available CHANNEL INFO BANNER VIDEO INPUT SKIP SKIP 75 OHM INPUT REMOTE CONTROL EUR7613Z60 EUR7713Z70 CRT SUPPLIER SAMSUNG (FLAT) FAMILY...
Page 87 BOARD PART NUMBER DESCRIPTION TNP2AH047HB MAIN BOARD TNP2AA157AK CRT BOARD CT-27SL33G / CT-27SL33UG BOARD PART NUMBER DESCRIPTION TNP2AH047HC MAIN BOARD TNP2AA157AK CRT BOARD TNP2AA123 PIP BOARD NOTE When ordering a replacement board assembly, append an “S” to the board number EXAMPLE To order the A Board, for CT-27SL13G the replacement board is TNP2AH047HBS.
Page 88 8. Location of controls (remote) 8.1. EUR7613Z60...
Page 89 Note: For additional information about this remote please refer to the owner’s manual section remote operation, listed on the parts list section. 8.2. EUR7613Z70...
Page 90 Note: For additional information about this remote please refer to the owner’s manual section remote operation, listed on the parts list section. 9. Dissasembly for service Back cover Remove all the screws marked with an arrow ( ) from the back of the receiver NOTE Screw configuration, type, and number of screws vary depending on the model of the receiver serviced and the application;...
Page 91 1. Slide the chassis completely out of the guide rails. 2. Stand the receiver on its edge. The underside of the board is completely accessible for component replacement. Note: Some tie-wraps that secure the wire dressings may need to be unfastened for chassis removal. Y-Board - Second tuner board 1.
Page 92 2. Disconnect the yoke (DY) plug, degaussing coil (DEG) plug from the main board. 3. Unplug the CRT 2nd anode button from the main board. 4. Remove the C-Board from the CRT base and unplug the black wires (CRT dag ground) C11 & C21. 5.
Page 93: Important Notice
8. Replace the components on CRT neck and reinstall into cabinet. Verify that all ground wires and circuit board plugs get connected. IMPORTANT NOTICE When ordering the CRT, please order CRT and CRT kit also. Please see parts list section for part numbers. 9.2.
Page 94 All service adjustments are factory preset and should not require adjustment unless controls and/ or associated components are replaced. Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use IC801’s heat sink when the HOT ground symbol is used. Otherwise, use COLD ground (tuner shield, IC451’s heat sink or FA2).
Page 95 A-BOARD TEST VOLTAGE POINT MDDA CRT SAMSUNG TPD14 131.0 ± 2.0V 131.0 ± 2.0V SOUND C823 (+) 22.7 ± 1.0V 22.7 ± 1.0V STB12V C827 (+) 12.8 ± 1.0 V 12.8 ± 1.0 V 220V TPA14 217 ± 10 V 220 ±...
Page 96: Important Note
5. Adjust VOLUME to minimum (0). 6. Press VOL (decrease) on receiver. Red “CHK” appears in upper corner. To toggle between aging and service modes: While the “CHK” is displayed on the left top corner of the CRT, pressing “ACTION” and “VOL” UP on the TV simultaneously will toggle between the modes.
Page 97 purity field check mode Entering service mode (open-back method) While the receiver is connected and operating in normal mode, momentarily short test point FA1 (TP1 pin 2) to cold ground (TP1 pin 3). The receiver enters the aging mode. Yellow letters “CHK” appear in the upper left corner of the screen. / (The volume right/left and channel up/down will adjust rapidly).
Page 98: Service Adjustments (Electronic Controls)
NAME DESCRIPTION REGISTER VALUE CT-27SL33G/UG/MG/ CT-27SL13G/UG/MG TOPG TOP CORNER PINCUSHION BTMG BOTTOM CORNER PINCUSHION TRAP TRAPEZOID PCCHG PINCUSHION HIGH PCCLG PINCUSHION LOW PCCHS PINCUSHION HIGH PCCLS PINCUSHION LOW TOPSL TOP CORNER PINCUSHION SLICE LEVEL BTMSL BOTTOM CORNER PINCUSHION SLICE LEVEL VEAMP VERTICAL SIZE VERTICAL LINEARITY...
Page 99 1. Apply a colorbar pattern. 2. Set the PICTURE control to the maximum. 3. Set COLOR control to minimum (no color on picture). 4. Set the BRIGHTNESS control to the center. 5. Set the SHARPNESS control to the center. 6. Connect the oscilloscope to TP35. Procedure 1.
Page 100 12.3. Color output adjustment / Service DAC adjustment (COLOR, TINT) NOTE if a rainbow pattern generator is available perform the following procedure; the next section describes the procedure with no rainbow pattern. Make sure that sub-contrast adjustment was finished prior to perform this adjustment. PREPARATION 1.
Page 101 4. Connect the oscilloscope to TP35 and GND. 5. Adjust “COLOR” register so that the amplitude is 1.1±0.5Vp-p. TP35 Waveform. 12.4. Color output adjustment / Service DAC adjustment / (COLOR, TINT, B-Y_G) NOTE Color and tint adjustment sets the reference settings for the user controls; It is important to read the procedures.
Page 102 5. In service mode adjust “B-Y G” data so that blue and green seem natural. 6. Confirm that saturation and picture are normal (normal image). 7. If image is not satisfactory, repeat adjustment until the image is normal and natural. NOTE The image can be compared against other set to see the image quality.
Page 103 - CUT B______________________02 00 - R DR_______________________07 FF - B DR_______________________07 FF PROCEDURE 1. Connect the oscilloscope to KG (CRT-Board). 2. In service mode for making electronic adjustment, select “BRIGH” DAC. 3. Press RECALL button on the remote control to collapse the raster. (service SW).
Page 104 RECALL button for at least three seconds, a reset messagewill appear in the image. Use this feature when deflection adjustment gets off adjustment to the point that it cannot be adjusted back easily. 12.6.1. H-Center adjustment PREPARATION 1. Apply a crosshatch pattern. 2.
Page 105 center mark. 2. Adjust linearity data “V-C” so that interval of “a” is same as “b” (a= 3. If the v-position is not at the CRT center, adjust / V position “V POS” DATA again. 4. Apply a monoscope pattern. 5.
Page 106 case) - Increase “V-S” DATA by one step NOTE Repeat “a” and “b” until b-a ± 1.5mm 3. Confirm to make outermost circle of monoscope pattern a correct circle V-Adjustment 12.7. MTS circuit adjustments The MTS circuit adjustments require two steps: 1.
Page 107 1. Apply the following signal from the RF signal generator: - Video: 100 IRE flat field, 30% modulation. - Audio: 300Hz, 100% modulation, monaural (70 ±5dB, 75 OPEN, P/S 10dB). Make sure that the 75 s pre-emphasis is OFF. 2. Adjust the MTS input level adjustment “MTSIN” data until the RMS voltage measured is 120 ±...
Page 108 NOTE After setting 30% modulation with P.L. SW and N.R. SW OFF, turn P.L. SW and N.R. SW 5. Adjust the MTS High-level separation adjustment “SEPAH” until the amplitude displayed on the scope is minimum. 6. Repeat above steps 2 through 5 until the amplitude is at minimum for both signals.
Page 109 13. Identification of main components 13.1. A-Board main components A-Board main components 13.2. A-Board surface-mounted components A-Board (bottom side)
Page 111 13.3. C-Board main components C-Board main components 13.4. Y-Board main components Y-Board main components...
Page 112 14. Reference for PDF colors...
Page 113: Conductor Views
15. Conductor views 15.1. A-Board printed circuit (1 of 2) 15.2. A-Board printed circuit (2 of 2) 15.3. C-Board printed circuit 15.4. Y-Board printed circuit 16. Block diagrams 16.1. Video signal block diagram (SL13 models) 16.2. Video signal block diagram (SL33 models) 16.3.
Page 115 17.2. Notas de esquemáticos en español...
Page 117: Parts Location
17.3. A-Board schematic TNP2AH047HB (1 of 4) 17.4. A-Board schematic TNP2AH047HB (2 of 4) 17.5. A-Board schematic TNP2AH047HB (3 of 4) 17.6. A-Board schematic TNP2AH047HB (4 of 4) 17.7. A-Board schematic TNP2AH047HC (1 of 4) 17.8. A-Board schematic TNP2AH047HC (2 of 4) 17.9.
Page 118 19.2. Parts list Ref. No. Part No. Part Name & Description Remarks CAPRISTORS CRA801 TP00842-51 TAPING GAP TERMINAL CAPACITORS C003 ECA1HM4R7B CAP E 4.7UF-50V C004 TCJ2VC1H150J CAP C 15PF-J-50V C005 TCJ2VC1H150J CAP C 15PF-J-50V C008 TCJ2VF1H103Z CAP C .01UF-Z-50V C009 ECJ2VF1H104Z CAP C .1UF-Z-50V C010...
Page 119 Ref. No. Part No. Part Name & Description Remarks C041 ECA1HM2R2B CAP E 2.2UF-50V C043 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C044 ECA0JM102B CAP E 1000UF-6.3V C046 TCJ2VF1H103Z CAP C .01UF-Z-50V C048 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C051 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C052 ECA1CM101B CAP E 100UF/16V C053...
Page 120 Ref. No. Part No. Part Name & Description Remarks C512 ECA2CM100B CAP E 10UF-160V C531 ECA1HM4R7B CAP E 4.7UF-50V C540 TCJ2VF1H103Z CAP C .01UF-Z-50V C551 ECA1VM471B CAP E 470UF-35V C554 ECKR2H561KB5 CAP C 560PF-K-500V C555 ECA2EM220E CAP E 22UF-250V C556 ECA1CM471B CAP E 470UF-16V C557...
Page 121 Ref. No. Part No. Part Name & Description Remarks C827 ECA1CM102B CAP E 1000UF/16V C828 ECA2CHG470E CAP E 47UF-160V C829 ECA1CM471B CAP E 470UF-16V C830 ECA1CM471B CAP E 470UF-16V C901 TCJ2VB1H103K CAP C .01UF-K-50V C904 ECKR1H103ZF5 CAP C .01UF-Z-50V C952 ECA1HM100B CAP E 10UF/50V C953...
Page 122 C1846 ECA1HM100B CAP E 10UF/50V CT-27SL33G CT-27SL33UG...
Page 123 Ref. No. Part No. Part Name & Description Remarks C1847 ECA1HM100B CAP E 10UF/50V CT-27SL33G CT-27SL33UG C1848 ECA1HM100B CAP E 10UF/50V CT-27SL33G CT-27SL33UG C1849 ECA1EM470B CAP E 47UF-25V CT-27SL33G CT-27SL33UG C1850 TCJ2VF1H103Z CAP C .01UF-Z-50V CT-27SL33G CT-27SL33UG C1851 ECA1HM100B CAP E 10UF/50V CT-27SL33G CT-27SL33UG C1852 ECJ2VF1C105Z CAP C 1.0UF-Z-16V CT-27SL33G CT-27SL33UG...
Page 124 Ref. No. Part No. Part Name & Description Remarks C2518 ECA1HM4R7B CAP E 4.7UF-50V C2519 ECA1CM220B CAP E 22UF-16V C2520 TCJ2VF1H103Z CAP C .01UF-Z-50V C2531 ECA1HM4R7B CAP E 4.7UF-50V C2532 ECA1HM4R7B CAP E 4.7UF-50V C3001 ECA1CM220B CAP E 22UF-16V C3002 ECA1CM220B CAP E 22UF-16V C3011...
Page 125 Ref. No. Part No. Part Name & Description Remarks D558 B0HANV000008 DIODE D559 DIODE D561 AU02V0 DIODE D606 MA2C165001VT DIODE D753 AU01ZV0 DIODE D801 D3SBA60-4103 DIODE D803 MAZ41200MF DIODE ZENER D806 TAP2AA0003 PTC 3-OHM D808 SARS01V1 DIODE D809 B0HAJP000015 DIODE D810 B0HAJP000015 DIODE...
Page 126 IC004 PST9128NR INT CKT Ref. No. Part No. Part Name & Description Remarks IC005 PQ3RD13 INT CKT IC351 C1AA00000622 INT CKT IC451 AN5522 INT CKT IC501 NC7SZU04M5X INT CKT IC551 AN78M09LB INT CKT IC552 AN78M05LB PLUS 5V AVR IC801 STRW5634 INT CKT IC802 0N3171RLF...
Page 127 Ref. No. Part No. Part Name & Description Remarks L953 EXCELSA24T FERRITE BEAD L954 EXCELSA24T FERRITE BEAD L955 EXCELSA24T FERRITE BEAD L1804 ELESN3R3JA COIL PEAKING 3.3UH CT-27SL33G CT-27SL33UG L1807 ELESN330JA COIL PEAKING 33UH CT-27SL33G CT-27SL33UG L1808 EXCELDR35V FERRITE BEAD CT-27SL33G CT-27SL33UG L1810 ELESN330JA COIL PEAKING 33UH CT-27SL33G CT-27SL33UG...
Page 128 Q1805 2SD601ARTX TRANSISTOR CT-27SL33G CT-27SL33UG...
Page 129 Ref. No. Part No. Part Name & Description Remarks Q1806 2SB709ARTX TRANSISTOR CT-27SL33G CT-27SL33UG Q1808 2SB709ARTX TRANSISTOR CT-27SL33G CT-27SL33UG Q1809 2SB709ARTX TRANSISTOR CT-27SL33G CT-27SL33UG Q1810 2SD601ARTX TRANSISTOR CT-27SL33G CT-27SL33UG Q2350 2PB709AR-115 TRANSISTOR Q2361 2PD601AR-115 TRANSISTOR Q2362 2PD601AR-115 TRANSISTOR Q2363 2PB709AR-115 TRANSISTOR Q3001 2PD601AR-115...
Page 130 R050 ERJ6GEYJ102V RES M 1K-J-1/10W...
Page 131 Ref. No. Part No. Part Name & Description Remarks R052 ERJ6GEYJ103V RES M 10K-J-1/10W R053 ERJ6GEYJ101V RES M 100-J-1/10W R055 ERJ6GEYJ103V RES M 10K-J-1/10W R056 ERJ6GEYJ471V RES M 470-J-1/10W R057 ERJ6GEYJ101V RES M 100-J-1/10W R059 ERJ6GEYJ121V RES M 120-J-1/10W R060 ERJ6GEYJ101V RES M 100-J-1/10W R061...
Page 132 Ref. No. Part No. Part Name & Description Remarks R376 ERJ6GEYJ102V RES M 1K-J-1/10W R377 ERJ6ENF3300V RES M 330-F-1/10W R378 ERJ6ENF3300V RES M 330-F-1/10W R379 ERJ6ENF3300V RES M 330-F-1/10W R380 ERJ6ENF1501V RES M 1.5K-F-1/10W R381 ERJ6ENF1501V RES M 1.5K-F-1/10W R382 ERJ6ENF1501V RES M 1.5K-F-1/10W R383...
Page 133 Ref. No. Part No. Part Name & Description Remarks R557 ERJ6GEYJ103V RES M 10K-J-1/10W R559 ERG2FJ683H RES M 12K-J-2W R561 ERG2FJ102H RES M 1K-J-2W R562 ERG2FJ270H RES M 27-J-2W CT-27SL13G CT-27SL13UG R562 ERX3FJ4R7H RES M 4.7-J-3W CT-27SL33G CT-27SL33UG R563 ERG3FJ150H RES M 15-J-3W R564 ERDS2TJ563T...
Page 134 R952 ERDS2TJ153T RES C 15K-J-1/4W...
Page 135 Ref. No. Part No. Part Name & Description Remarks R953 ERDS2TJ332T RES C 3.3K-J-1/4W R954 ERDS2TJ431T RES C 430-J-1/4W R956 ERDS2TJ121T RES C 120-J-1/4W R958 ERDS2TJ391T RES C 390-J-1/4W R959 ERDS2TJ101T RES C 100-J-1/4W R960 ERQ14AJ100E RES F 10-J-1/4W R961 ERQ1CJP331S RES F 330-J-1W R962...
Page 136 Ref. No. Part No. Part Name & Description Remarks R1834 ERJ6ENF1202V RES M 12K-F-1/10 CT-27SL33G CT-27SL33UG R1835 ERJ6ENF2701V RES M 2.7K-F-1/10W CT-27SL33G CT-27SL33UG R1842 ERJ6GEYJ101V RES M 100-J-1/10W CT-27SL33G CT-27SL33UG R1843 ERJ6GEYJ101V RES M 100-J-1/10W CT-27SL33G CT-27SL33UG R2201 ERJ6GEYJ224V RES M 220K-J-1/10W R2203 ERJ6GEYJ102V RES M 1K-J-1/10W...
Page 137 Ref. No. Part No. Part Name & Description Remarks R3033 ERJ6GEYJ223V RES M 22K-J-1/10W R3034 ERJ6GEYJ471V RES M 470-J-1/10W R3035 ERJ6GEYJ562V RES M 5.6K-J-1/10W R3036 ERJ6GEYJ183V RES M 18K-J-1/10W R3037 ERJ6GEYJ471V RES M 470-J-1/10W R3038 ERJ6GEYJ562V RES M 5.6K-J-1/10W R3039 ERJ6GEYJ183V RES M 18K-J-1/10W R3041...
Page 138 M005 TSN63115-4 PURITY MAGNET TSP2AF005 GEOMAGNETIC COIL M006 TSX2AA0361 AC LINE CORD TXFKY18GSER FRONT CABINET TXFKU14GSER BACK CABINET TBM2AA0026 PANASONIC BADGE JK3001 TJB2AA0221 TERMINAL A/V 8P JK3002 TJB2AA0045 TERMINAL FRONT A/V JK3003 TJB2AA0421 TERMINAL SUPER-VIDEO JK3004 TJB2AA0211-1 TERMINAL A/V 2P...
Page 139 A-BOARD TNP2AH047HC CT-27SL33G, CT-27SL33UG...
Page 140 A-BOARD TNP2AH047HB CT-27SL13G, CT-27SL13UG...
Page 141 A-BOARD TNP2AH047HC CT-27SL33G, CT-27SL33UG...
Page 142 C-BOARD TNP2AA157 CT-27SL13G/UG, CT-27SL33G/UG...
Page 143 C-BOARD TNP2AA157AK CT-27SL13G, CT-27SL13UG, CT-27SL33G, CT-27SL33UG...
Page 144 C-BOARD TNP2AA157AK CT-27SL13G, CT-27SL13UG, CT-27SL33G, CT-27SL33UG...
Page 145 Video signal path block diagram A-BOARD IC3002 V2/Y2 V2/Y2 FRONT VIDEO SW V2/Y2 IC3001 VIDEO SWITCH V1/Y1 V1/Y1 TV IN V/Y OUT V1/Y1 JK3001 REAR VIDEO Y/V1 MCOMP IN MV IN MU IN JK3002 FRONT C V1 IC001 VIDEO PIP UIN PIP VIN PIP YIN C V1...
Page 146 Video signal path block diagram Y-BOARD IC1801 C IN Y (R) OUT Y IN IC3002 V2/Y2 V2/Y2 FRONT VIDEO SW V (B) OUT V IN U IN U (G) OUT V1/Y1 V1/Y1 V1/Y1 IC1804 VIDEO SWITCH TV IN 1 JK3001 7 V/Y OUT REAR VIDEO...
Page 147 Video signal path block diagram A-BOARD IC3001 FRONT VIDEO SW V2/Y2 IC3001 VIDEO SWITCH TV IN V/Y OUT V1/Y1 JK3001 REAR VIDEO Y/V1 MCOMP IN MV IN MU IN IC001 JK3002 FRONT VIDEO R OUT G OUT B OUT VM OUT MSCIN JK3003 Q361...
Page 148 A - BOARD - TNP2AH047HB/HC IC2501 IC001 IC002 IC2301 IC3002 ..4.40 ..8.90 ..0.00 ..2.50 ..0.00 ..7.50 .
Page 149 A - BOARD - TNP2AH047HB/HC Q001 Q057 Q058 Q070 Q092 Q2350 Q2361 Q2362 Q2363 0.00 1.50 1.50 4.12 8.90 5.35 0.70 0.70 0.20 13.00 0.00 0.00 8.90 1.40 0.00 0.00 0.10 0.80 0.00 0.07 0.07 3.50 3.30 3.14 0.00 0.00 0.80 Q3001 Q3002...
Page 150 A-Board TNP2AH047HB/HC 0.9 Vp-p 4.5 Vp-p 4.60 Vp-p 4.6 Vp-p TPA5 (VIDEO) A11 PIN 4 (GREEN OUT) A11 PIN 3 (RED OUT) A11 PIN 5 (BLUE OUT) 10MHz X’tal 2.20 Vp-p 780mVp-p 3.30 Vp-p Q411 B (V DRIVE) IC451 PIN 1 (VERT IN) IC001 PIN 50 (OSC) IC001 PIN 36 (FBP IN) 26.8 Vp-p...
Page 151 Y-BOARD TNP2AA123 CT-27SL13G/UG, CT-27SL33G/UG...
Page 152 Y-BOARD TNP2AA123 CT-27SL33G, CT-27SL33UG...
Page 153 Y-BOARD TNP2AA123 CT-27SL33G, CT-27SL33UG...
Page 154 Audio signal path block diagram A-BOARD Audio Switching IC3101 L&R Mixed MPX IN IC2201 JK3001 R-OUT L-OUT REAR AUDIO R-IN L-IN IC2501 R-OUT L-OUT JK3002 R-IN L-IN FRONT VAO-R AUDIO IC2301 AUDIO AMP VAO-L R-OUT L-OUT MUTE JK3004 TO AUDIO SP ON/OFF IC001 CT-27SL13G, CT-27SL13UG, CT-27SL33G, CT-27SL33UG...
Page 155 A-BOARD TNP2AH047 CT-27SL13G/UG, CT-27SL33G/UG...
Page 156 A-BOARD TNP2AH047 CT-27SL13G/UG, CT-27SL33G/UG...
Page 157 A-BOARD TNP2AH047HB CT-27SL13G, CT-27SL13UG...
Page 158 A-BOARD TNP2AH047HC CT-27SL33G, CT-27SL33UG...
Page 159 A-BOARD TNP2AH047HB CT-27SL13G, CT-27SL13UG...
Page 160 A-BOARD TNP2AH047HC CT-27SL33G, CT-27SL33UG...
Page 161 A-BOARD TNP2AH047HB CT-27SL13G, CT-27SL13UG...
Page 162 MTNC030623C1 B01/B05 Color Television CT-25L8G / CT-25L8UG / CT-20L8G / CT-20G8G / CT-20G8SG NA10 Copyright 2003 Matsushita Electric Corporation of America. All rights reserved. Unauthorized copying and distribution is a violation of law. 1. Safety precautions General guidelines...
Page 163 An isolation transformer should always be used during the servicing of a receiver whose chassis is not isolated from AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injuryfrom electrical shocks. It will also protect the receiver from being damaged by accidental shorting that may occur during servicing.
Page 164 rechecked before it is returned to the customer. Hot check circuit Insulation test Connect an insulation tester between an exposed metallic part and A.C. line. Apply 1080VAC/ 60Hz for 1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with other metallic exposed parts.
Page 165 Leadless chip component (surface mount) Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the board to mount standard transistors or diodes. Some chips capacitor or resistor board solder pads may have holes through the board,however the hole diameter limits standard resistor replacement to 1/8 watt.
Page 166 How to replace flat ic (required tools) 1. Remove the solder from all of the pins of a Flat IC by using a desolder braid 2. Put the iron wire under the pins of the Flat IC and pull it in the direction indicated while heating the pins using a soldering iron.
Page 167 the soldering pads where the pins need to be soldered). Properly determine the positions of the soldering pads and pins by correctly aligning the polarity symbol 5. Solder all pins to the soldering pads using a fine tipped soldering iron 6.
Page 168 Equipment: 1. Isolation transformer. 2. High voltage meter. 3. D.C. Ammeter 4. Short jumper. 5. HHS jig (See figure below). Diode Connection Jumper. Preparation: 1. Make sure the receiver is turned off. 2. Connect the receiver to an isolation transformer. 3.
Page 169 8. Slowly increase AC voltage at the input of the isolation transformer and confirm HHS voltage measure 31kV for 20” models and 33kV for 25” models. 9. Turn power off and remove jigs. 3. EEPROM replacement If a new EEPROM integrated circuit is replaced for servicing, follow the next procedure once that the memory is properly assembled: 1.
Page 170 7. Once that all 3 registers are set with the correct address value, perform all of the remaining adjustments and servicing. IMPORTANT: Correct ID switch configuration should be input when replacing EEPROM for each television model, otherwise if wrong values are configured, the television software will not function accordingly and properly.
Page 171 Suggested Pb free solder There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also beused. 5. Receiver feature table...
Page 172 FEATURE/MODEL CT-25L8G/UG CT-20L8G CT-20G8G/SG CHASSIS AP403 BP398 AP398 MICRO 128K MENU LANGUAGE ENG/SPAN/FR CLOSED CAPTION V-CHIP (USA/CANADA) CHANNEL COUNT REMOTE CONTROL EUR7713010 CRT SUPPLIER PANABLACK, SAMSUNG CHASSIS NA10 COMB FILTER DIGITAL V/A NORM (X=BOTH) MTS/SAP/DBX BUILT-IN AUDIO POWER 1.5Wx2 (10%) No.
Page 173 BOARD PART NUMBER DESCRIPTION TNP2AH047FA MAIN BOARD TNP2AA122FA CRT BOARD NOTE When ordering a replacement board assembly, append an “S” to the board number EXAMPLE To order the A Board, the replacement board is TNP2AH047AAS. 7. TV Location of controls...
Page 174 8. Location of controls (EUR7713010 remote) Note: For additional information about this remote please refer to the owner’s manual section remote operation, listed on the parts list section. 9. Dissasembly for service Back cover Remove all the screws marked with an arrow ( ) from the back of the receiver...
Page 175 NOTE Screw configuration, type, and number of screws vary depending on the model of the receiver serviced and the application; variou’s models are covered in this manual. Use same hardware when reassembling the receiver. - 3 screws at the top edge of the receiver (for 25” sets). - 2 screws at the top edge of the receiver (for 20”...
Page 176 NOTE When reassembling speakers be sure to connect the speaker wires to the correct speaker lead (+) 9.1. Disassembly for CRT replacement 1. Discharge the CRT as instructed in the “safety precautions”. 2. Disconnect the yoke (DY) plug, degaussing coil (DEG) plug from the main board.
Page 177: Important Notice
To remove and remount the degaussing coil: - Unhook the coil spring from the bottom corners of the CRT ears. - Release the braid loop from the upper corners of the CRT ears. 7. Mount the dag ground braid on the replacement CRT. Position the degaussing coil with new ties.
Page 178 Note: Components and test points within doted areas are located on trace side. B+ voltage check 1. Set the BRIGHT and PICTURE to minimum by using the PICTURE menu. 2. Connect the DVM between C825 (+ side) or TPD14 and cold ground.
Page 179: Purity And Convergence Procedure
A-BOARD TEST VOLTAGE VOLTAGE 25 POINT 20” “ TPD14 131.0 ± 2.0V 131.0 ± 2.0V SOUND C823 (+) 18.4 ± 1.0V 18.4 ± 1.0V STB12V C827 (+) 12.7 ± 1.0 V 12.7 ± 1.0 V 220V TPA14 217 ± 10 V 221 ±...
Page 180: Vertical Raster Shift Adjustment
For models using 4 pairs of rings, place the yoke on the CRT neck (do not tighten the clamp). Place the vertical raster shift tabs at 3 o’clock (90° from the purity and convergence tabs. Description of rings Initial position of rings Turn the receiver ON.
Page 181: Initial Center Static Convergence
INITIAL CENTER STATIC CONVERGENCE Connect a dot/cross hatch generator to the receiver and tune in a signal. Observe misconvergence at center of the screen only. Adjust the R&B pole magnets; by separating tabs and rotating to converge blue with red. Adjust the R&B and R&B&G pole magnets: by separating tabs and rotating to converge blue and red (magenta) with green.
Page 182: Final Convergence Procedure
procedure. FINAL CONVERGENCE PROCEDURE NOTE Vertical size and focus adjustments must be completed prior to performing the convergence adjustment. Connect a dot pattern generator to the receiver. The brightness level should not be higher than necessary to obtain a clear pattern. Converge the red and the blue dots at the center of the screen by rotating the R&B pole static convergence magnets.
Page 183 Convergence Magnets and Wedges Location 12. Service mode (electronic adjustments) This receiver has electronic technology using the IC bus concept. It performs as a control function and it replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control functions are now performedby using “on screen display menu”.
Page 184 7. Press POWER on the remote control to display the service adjustment modes menu, select adjustment by pressing the volume right/left buttons and channel up/down buttons on the remote and ACTION to enter the adjustment. Exiting the service mode: This TV goes out from service mode when it is unplugged or turned OFF. To exit the service mode, turn the TV OFF from or unplug the TV from A.C.
Page 185 Entering service mode (open-back method) While the receiver is connected and operating in normal mode, momentarily short test point FA1 (TP1 pin 2) to cold ground (TP1 pin 3). The receiver enters the aging mode. Yellow letters “CHK” appear in the upper left corner of the screen. / (The volume right/left and channel up/down will adjust rapidly).
Page 186 variation of electrical characteristics in each set, except for the ID switch values. *Note: The correspondent ID switch (ID1,ID2, ID3) data configuration should not be modified in any way. If EEPROM circuit needs to be replaced, these ID values should be configured according with this table.
Page 187 12.3. Instructional flow chart for service mode (continued).
Page 188 13. Service adjustments (electronic controls) NOTE Please correlate with available pattern on all adjustments 13.1. Sub-Brightness and Contrast / Service DAC adjustment (BRIGH, CONT) Adjustment of this control is important for setting proper operation of customer brightness and picture controls. Do not adjust the SCREEN VR after the sub-brightness is set. This adjustment is factory set.
Page 189 “BRIGH”, and adjust data to obtain 3.8±0.1V (for 20” CRT) or 3.4± 0.1V (for 25” CRT) between 7.5IRE and GND level at TP35. (See waveformdetail). 2. In service mode, select DAC for contrast adjustment “CONT”, and adjust data to obtain 2.2±0.1V (for 20” CRT) or 2.7±0.1V (for 25” CRT) between 7.5IRE and 100IRE level at TP35.
Page 190 1. Apply a rainbow color bar pattern. 2. Connect the oscilloscope to TP37. 3. In service mode adjust “TINT” register until the waveform measured is as the one shown. Tint level from A and B peaks must be almost in the same level (0.3 Vp for 20” models and 0.35 Vp for 25”...
Page 191 PROCEDURE 1. Apply a color bar pattern. 2. In service mode adjust “R DR” and “B DR” data to “80”. 3. In service mode adjust “TINT” data so that the color does not become greenish or redish. 4. In service mode adjust “COLOR” data so that the color level is not too high (saturated) or too low (tending to black and white).
Page 192 PATTERN. 2. Apply a color bar pattern (with no color). 3. Turn the SCREEN control (part of FBT T551) fully counterclockwise. 4. Preset the following service DACs for best results: - BRIGH______________________1 D0 - CUT R______________________02 00 - CUT G______________________02 00 - CUT B______________________02 00 - R DR_______________________07 FF - B DR_______________________07 FF...
Page 193 13.5. Deflection adjustments To reset deflection adjustments To reset deflection adjustments to factory adjusted default, enter to service mode (with red CHK displayed), press POWER button on remote to display the service menu, then press and hold RECALL button for at least three seconds, a reset messagewill appear in the image. Use this feature when deflection adjustment gets off adjustment to the point that it cannot be adjusted back easily.
Page 194 3. Verify that horizontal width (A & B mark) is within 4.5 ± 0.7 for 20” models and 5.0 ± 0.7 for 25” models. 13.5.2. Vertical linearity(V-C), V-Size and V-Position adjustment PREPARATION 1. Apply a crosshatch pattern 2. Normalize the picture settings. PROCEDURE 1.
Page 195 13.5.3. V-S Correction adjustment PREPARATION 1. Apply a crosshatch pattern 2. Normalize the picture settings. PROCEDURE 1. Enter to service mode 2. Check a and b sizes, If b-a < -1.5mm (in top & bottom extending case) - Increase “V-S” DATA by one step NOTE Repeat “a”...
Page 196 Input level adjustment / Service DAC adjustment (MTSIN) PREPARATION 1. Connect an RMS meter with filter jig as shown in figure to TPE11. Filter Jig 2. Connect an RF signal generator to the RF antenna input. PROCEDURE 1. Apply the following signal from the RF signal generator: - Video: 100 IRE flat field, 30% modulation.
Page 197 OPEN, P/S 10dB). NOTE After setting 30% modulation with P.L. SW and N.R. SW OFF, turn P.L. SW and N.R. SW 3. In service mode, adjust the MTS Low-Level separation adjustment “SEPAL” data until the amplitude displayed on the scope is minimum.
Page 198: Width Correction Adjustment
of resolution following the decimal point. Example: 000.0000 4. Place the receiver into service mode for making electronic adjustment, select the clock adjustment DAC “CLOCK”. 5. Calculate and set “CLOCK” based on the following formula: NOTE TP017 (IC001 pin 79) measurement will not change regardless of the value stored in CLOCK. 13.8.
Page 199 Back Cover Removal (CT-25L8G/CT-25L8UG).
Page 200 14.2. Chassis Components Rear view (inside cabinet).
Page 201 14.2.1. C-Board Chassis C-Board component locations 14.2.2. CT-20G8G/CT-20G8SG A-Board Chassis A-Board Top view (CT-20G8G/CT-20G8SG).
Page 202 14.2.3. CT-20L8 A-Board Chassis A-Board Top view (CT-20L8G)
Page 203 14.2.4. CT-25L8/CT-25L8U A-Board Chassis A-Board Top view (CT-25L8G/CT-25L8UG).
Page 204 14.2.5. A-Board Surface-mounted components A-Board (bottom view)
Page 206 15. Reference for PDF Colors 16. Conductor Views 16.1. A-Board Printed Circuit (Left Side) 16.2. A-Board& C Board Printed Circuit (Right Side) 17. Block Diagrams 17.1. Video Signal Block Diagram 17.2. Audio Signal Block Diagram 18. Schematics 18.1. English Schematic Notes...
Page 208 18.2. Notas de Esquemáticos en Español...
Page 210: Parts List
18.3. A-Board Schematic TNP2AH047AA/AB (page 1 of 4) 18.4. A-Board Schematic TNP2AH047AA/AB (page 2 of 4) 18.5. A-Board Schematic TNP2AH047AA/AB (page 3 of 4) 18.6. A-Board Schematic TNP2AH047AA/AB (page 4 of 4) 18.7. A-Board Schematic TNP2AH047FA (page 1 of 4) 18.8.
Page 211 20.2. Parts List...
Page 212 Ref. No. Part No. Part Name & Description Remarks CAPRISTORS CRA801 TP00842-51 TAPING GAP TERMINAL CAPACITORS C003 ECA1HM4R7B CAP E 4.7UF-50V C004 TCJ2VC1H150J CAP C 15PF-J-50V C005 TCJ2VC1H150J CAP C 15PF-J-50V C008 TCJ2VF1H103Z CAP C .01UF-Z-50V C009 ECJ2VF1H104Z CAP C .1UF-Z-50V C010 TCJ2VC1H680J CAP C 68PF-J-50V...
Page 213 Ref. No. Part No. Part Name & Description Remarks C039 TCJ2VB1H221K CAP C 220PF-K-50V C041 ECA1HM2R2B CAP E 2.2UF-50V C043 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C044 ECA0JM102B CAP E 1000UF-6.3V C046 TCJ2VF1H103Z CAP C .01UF-Z-50V C048 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C051 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C052...
Page 214 Ref. No. Part No. Part Name & Description Remarks C501 ECCR1H221JC5 CAP C 220PF-J-50V C505 ECQB1H104JF3 CAP P .10UF-J-50V C506 ECKR2H102KB5 CAP C 1000PF-K-500V C510 ECCR2H100D5 CAP C 10PF-D-500V C512 ECA2CM100B CAP E 10UF-160V C531 ECA1HM4R7B CAP E 4.7UF-50V C540 TCJ2VF1H103Z CAP C .01UF-Z-50V C551...
Page 215 Ref. No. Part No. Part Name & Description Remarks C812 ECQU2A224MVA CAP P .22UF-M-250VAC C813 ECQU2A153MVA CAP P .015UF-M-250VAC C814 ECQU2A153MVA CAP P .015UF-M-250VAC C820 ECA1CM101B CAP E 100UF/16V C821 TCJ2VF1H103Z CAP C .01UF-Z-50V C822 ECKR3A221KBP CAP C 220PF-K-1KV C823 ECA1VM471B CAP E 470UF-35V C824...
Page 216 Ref. No. Part No. Part Name & Description Remarks C3240 TCJ2VF1H103Z CAP C .01UF-Z-50V DIODES D001 MAZ30680ML DIODE D002 MA2C165001VT DIODE D003 MAZ30510HL DIODE D006 MAZ33000HL DIODE D007 MAZ30510HL DIODE D010 MAZ40510MF DIODE ZENER D055 MAZ40330MF DIODE ZENER D360 MA2C165001VT DIODE D380 MA2C029WBF...
Page 217 D3019 CVS20A120MTA DIODE...
Page 218 Ref. No. Part No. Part Name & Description Remarks D3021 CVS20A120MTA DIODE D3023 MAZ31100ML DIODE ZENER D3024 MAZ31100ML DIODE ZENER FUSES F801 XBA2A00101 FUSE 6.3A 125V INTEGRATED CIRCUITS IC001 MN101E03GTB3 IC002 TVR2AJ165S EEPROM / CT-20G8G CT-20G8SG IC002 TVR2AJ166S EEPROM / CT-20L8G CT-25L8G CT-25L8UG IC003 GP1UE282GK IR SENSOR...
Page 219 L805 EXCELDR35V FERRITE BEAD / CT-20G8G CT-20G8SG CT-20L8G...
Page 220 Ref. No. Part No. Part Name & Description Remarks L806 EXCELDR35V FERRITE BEAD L807 EXCELSA35V FERRITE BEAD L808 EXCELSA35V FERRITE BEAD L809 EXCELDR35V FERRITE BEAD / CT-25L8G CT-25L8UG L810 EXCELDR35V FERRITE BEAD / CT-25L8G CT-25L8UG L2301 EXCELDR35V FERRITE BEAD / CT-20L8G CT-25L8G CT-25L8UG L2303 EXCELSA39T FERRITE BEAD / CT-25L8G CT-25L8UG...
Page 221 Ref. No. Part No. Part Name & Description Remarks R009 ERJ6GEYJ102V RES M 1K-J-1/10W R014 ERJ6GEYJ472V RES M 4.7K-J-1/10W R015 ERJ6GEYJ472V RES M 4.7K-J-1/10W R016 ERJ6GEYJ221V RES M 220-J-1/10W R017 ERJ6GEYJ221V RES M 220-J-1/10W R018 ERJ6GEYJ472V RES M 4.7K-J-1/10W R019 ERJ6GEYJ472V RES M 4.7K-J-1/10W R020...
Page 222 Ref. No. Part No. Part Name & Description Remarks R077 ERJ6GEYJ103V RES M 10K-J-1/10W R078 ERJ6GEYJ103V RES M 10K-J-1/10W R080 ERJ6GEYJ183V RES M 18K-J-1/10W R081 ERJ6GEYJ153 RES M 15K-J-1/10 R082 ERJ6GEYJ183V RES M 18K-J-1/10W R083 ERJ6GEYJ153V RES M 15K-J-1/10W R084 ERDS2TJ182T RES C 1.8K-J-1/4W R087...
Page 223 Ref. No. Part No. Part Name & Description Remarks R451 ERDS1FJ1R2P RES C 1.2-J-1/2W / CT-20G8G CT-20G8SG CT-20L8G R453 ERJ6GEYJ333V RES M 33K-J-1/10W R454 ERJ6GEYJ243V RES M 24K-J-1/10W / CT-20G8G CT-20G8SG CT-20L8G R454 ERJ6GEYJ363V RES M 36K-J-1/10W / CT-25L8G CT-25L8UG R455 ERJ6GEYJ103V RES M 10K-J-1/10W...
Page 224 Ref. No. Part No. Part Name & Description Remarks R801 ERF7ZK1R5 RES W 1.5-K-7 / CT-25L8G CT-25L8UG R802 ERG2FJ104H RES M 100K-J-2W R804 ERG1DJ224P RES M220K-J-1W R805 ERX2FZJR15H RES M .18-J-2W R806 ERX12SJ1R5P RES M 1.5-J-1/2W R807 ERDS2TJ681T RES C 680-J-1/4W R808 ERX12SJ1R5P RES M 1.5-J-1/2W...
Page 225 Ref. No. Part No. Part Name & Description Remarks R3010 ERJ6GEYJ334V RES M 330K-J-1/10W R3011 ERJ6GEYJ682V RES M 6.8K-J-1/10W R3012 ERDS2TJ101T RES C 100-J-1/4W R3013 ERJ6ENF75R0V RES M 75.0-F-1/10W R3014 ERJ6ENF75R0V RES M 75.0-F-1/10W R3015 ERJ6ENF75R0V RES M 75.0-F-1/10W R3016 ERDS2TJ181T RES C 180-J-1/4W R3017...
Page 226 TKX2AA00403 IR GUIDE / CT-25L8G CT-25L8UG TAS2AA0012 SPEAKER 16-OHM 1.5W TBM2A10141 BADGE PANASONIC / CT-20G8G TBM2A10143 BADGE PANASONIC / CT-20G8SG CT-20L8G CT-25L8G CT-25L8UG TBX2AA1303G BUTTON 7-KEY / CT-25L8G CT-25L8UG TBX2AA1701GS BUTTON 7-KEY / CT-20G8G TBX2AA1702G BUTTON 7-KEY / CT-20L8G TBX2AA1702GS...
Page 227 A-Board 4 Vp-p 4 Vp-p 4.32 V-p 1.3 Vp-p TPA5 (VIDEO) A11 PIN 3 (BLUE OUT) A11 PIN 1 (RED OUT) A11 PIN 2 (GREEN OUT) 10MHz X’tal 600mv Vp-p 3.28 Vp-p 3.88 Vp-p IC451 PIN 1 (VERT IN) IC001 PIN 36 (FBP IN) IC001 PIN 50 (OSC) Q4111 B (V DRIVE) 28 Vp-p...
Page 228 A-BOARD 1 of 4 TNP2AH047AA/AB CT-20L8G / CT-20G8G / CT-20G8SG...
Page 229 A-BOARD 2 of 4 TNP2AH047AA/AB CT-20L8 / CT-20G8 / CT-20G8S...
Page 230 CT-20L8G / CT-20G8G / CT-20G8SG A-BOARD 3 of 4 TNP2AH047AA/AB...
Page 231 CT-20L8G / CT-20G8G / CT-20G8SG A-BOARD 4 of 4 TNP2AH047AA/AB...
Page 232 A-BOARD 1 of 4 TNP2AH047FA CT-25L8G / CT-25L8UG...
Page 233 CT-25L8G / CT-25L8UG A-BOARD 2 of 4 TNP2AH047FA...
Page 234 CT-25L8G / CT-25L8UG A-BOARD 3 of 4 TNP2AH047FA...
Page 235 CT-25L8G / CT-25L8UG A-BOARD 4 of 4 TNP2AH047FA...
Page 236: Audio Signal Path Block Diagram
Audio signal path block diagram A-BOARD L&R Mixed MPX IN IC2201 R-OUT L-OUT JK3001 REAR AUDIO R-IN L-IN IC2301 JK3002 AUDIO AMP FRONT AUDIO R-OUT L-OUT MUTE ON/OFF IC001 CT-20L8G / CT-20G8G / CT-20G8SG / CT-25L8G / CT-25L8UG...
Page 237 C-BOARD TNP2AA122FA/AA CT-20L8G / CT-20G8G / CT-20G8SG / CT-25L8G / CT-25L8UG...
Page 238 A-BOARD 1 of 2 TNP2AH047 CT-20L8G / CT-20G8G / CT-20G8SG / CT-25L8G / CT-25L8UG...
Page 239 A-BOARD 2 of 2 TNP2AH047 C-BOARD TNP2AA122 CT-20L8G / CT-20G8G / CT-20G8SG / CT-25L8G / CT-25L8UG...
Page 240: Video Signal Path Block Diagram
Video signal path block diagram IC3001 VIDEO SWITCH V2/Y2 TV IN V1/Y1 V/Y OUT JK3001 REAR VIDEO Y/V1 MCOMP IN MV IN MU IN IC001 JK3002 FRONT VIDEO R OUT G OUT B OUT MSCIN *JK3003 S-Video Q360 Q361 Q362 Q357 Q358 Q359...
Page 241 A - BOARD IC001 IC002 IC501 IC2201 ..0.00 ..2.50 ..0.00 ..0.00 ..1.60 ..2.80 .
Page 242 A - BOARD Q001 Q057 Q058 Q070 Q092 Q2350 Q3001 Q3002 Q354 0.00 1.50 1.50 4.12 8.90 5.35 1.30 1.30 4.50 13.00 0.00 0.00 8.90 1.40 0.00 3.30 3.30 8.50 0.00 0.07 0.07 3.50 3.30 3.14 0.70 0.70 3.80 Q355 Q356 Q357 Q358...

This manual is also suitable for:

Ct-24sl14uj Ct-27sl14j Ct-27sl14uj

Panasonic CT-24SL14J Service Manual

Quick Links

Related Manuals for Panasonic CT-24SL14J

Summary of Contents for Panasonic CT-24SL14J

This manual is also suitable for:

Table of Contents