Panasonic CT-27SL13MUG Service Manual
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Panasonic CT-27SL13MUG Service Manual

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MTNC030943A1
B05
Color Television
CT-27SL13MG / CT-27SL13MUG / CT-27SL33MG / CT-
27SL33MUG
NA10
This simplified service manual is issued to add listed models to the
simplified service manual order No. MTNC030733A1 (CT-27SL33G).
Models included in this simplified service manual are identical to the
versions included on simplified service manualorder No.
MTNC030733A1 (CT-27SL33G) except for the differences included in
this simplied service manual. A difference parts list and unique
schematics to these models are included in this simplified service
manual. Please file and use this simplifiedservice manual together
with the simplified service manual order No. MTNC030733A1 (CT-
27SL33G).
1

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Summary of Contents for Panasonic CT-27SL13MUG

  • Page 1 MTNC030943A1 Color Television CT-27SL13MG / CT-27SL13MUG / CT-27SL33MG / CT- 27SL33MUG NA10 This simplified service manual is issued to add listed models to the simplified service manual order No. MTNC030733A1 (CT-27SL33G). Models included in this simplified service manual are identical to the versions included on simplified service manualorder No.

  • Page 2: Safety Precautions

    Copyright 2003 Matsushita Electric Corporation of America. All rights reserved. Unauthorized copying and distribution is a violation of law. 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.
  • Page 3 protection. Discharge the picture tube by shorting the anode to chassis ground (not to the cabinet or to other mounting hardware). When discharging connect cold ground (i.e. dag ground lead) to the anode with a wellinsulated wire or use a grounding probe.Avoid prolonged exposure at close range to unshielded areas of the picture tube to prevent exposure to x ray radiation.

  • Page 4: Service Notes

    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. X ray radiation WARNING The potential source of x ray radiation in the TV set is in the high voltage section and the picture tube.
  • Page 5 second letter, the grade of transistor. Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anode or common cathode. Check the parts list for correct diode number. Component removal 1.
  • Page 6 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. A small awl can be used instead of the iron wire. 3. Remove the solder from all the pads of the Flat IC by using a de solder braid 4.
  • Page 7 6. Check with a magnifier for solder bridge between the pins or for dry joint between pins and soldering pads. To remove a solder bridge, use a de solder braid as shown in the figure below IMPORTANT To protect against possible damage to the solid state devices due to arching or static discharge, make certain that all ground wires and CRT DAG wire are securely connected.

  • Page 8: Eeprom Replacement

    Preparation: 1. Make sure the receiver is turned off. 2. Connect the receiver to an isolation transformer. 3. Connect the ammeter serial from the flyback anode lead to the picture tube anode socket. 4. Prepare short jumper and HHS jig. Procedure: 1.

  • Page 9: About Lead Free Solder (Pbf)

    2. Turn the TV set ON. 3. Once inside service mode the first image that appears on-screen is the ID1 register with the respective address value (FF) like the image below. Note: All 3 registers (ID1,ID2,ID3) should appear with FF values if a new EEPROM is assembled.
  • Page 10 Lead is listed as (Pb) in the periodic table of elements. / In the information below, Pb will refer to lead solder, and PbF will refer to Lead Free Solder. / The lead free solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). / Thatis Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

  • Page 11: Receiver Feature Table

    can also beused. 5. Receiver feature table FEATURE/MODEL CT-27SL13MG/MUG CT-27SL33MG/MUG CHASSIS AP415 BP415 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...

  • Page 12: Board Description Table

    665.2x544.5x594.8mm26.18x21.43x23.41in WEIGHT (Kg/Lbs) 35.4/78.04 34.5/76.05 Note: Specifications are subject to change without notice or obligation. Dimensions and weights are approximate. 6. Board description table CT-27SL13MG / CT-27SL13MUG BOARD PART NUMBER DESCRIPTION TNP2AH047MA MAIN BOARD TNP2AA157AA CRT BOARD CT-27SL33MG / CT-27SL33MUG...
  • Page 13 8. Schematics 8.1. English schematic notes...
  • Page 15 8.2. Notas de esquem á ticos en espa ñ ol...

  • Page 17: Parts List

    8.3. A-Board schematic TNP2AH047MA (1 of 4) 8.4. A-Board schematic TNP2AH047MA (2 of 4) 8.5. A-Board schematic TNP2AH047MA (3 of 4) 8.6. A-Board schematic TNP2AH047MA (4 of 4) 8.7. A-Board schematic TNP2AH047MB (1 of 4) 8.8. A-Board schematic TNP2AH047MB (2 of 4) 8.9.
  • Page 18 9.2. Difference parts list Ref. No. Part No. Part Name & Description Remarks CAPACITORS C565 ECKW3D221JBR CAP C 220PF-J-2KVDC C568 ECQM4333JZW CAP P .039UF-J-400V C563 ECWH20822JVB CAP P 8200PF-2KV INTEGRATED CIRCUITS IC002 TVR2AJ179S ADJUSTED EEPROM / CT-27SL13MG/UMG, CT-27SL33MG/UMG COILS L801 ELF21V018A COIL L551...
  • Page 19 A-BOARD TNP2AH047MA CT-27SL13MG, CT-27SL13MUG...
  • Page 20 A-BOARD TNP2AH047MB CT-27SL33MG, CT-27SL33MUG...
  • Page 21 A-BOARD TNP2AH047MA CT-27SL13MG, CT-27SL13MUG...
  • Page 22 A-BOARD TNP2AH047MB CT-27SL33MG, CT-27SL33MUG...
  • Page 23 C-BOARD TNP2AA157AA CT-27SL13MG, CT-27SL13MUG, CT-27SL33MG, CT-27SL33MUG...
  • Page 24 C-BOARD TNP2AA157AA CT-27SL13MG, CT-27SL13MUG, CT-27SL33MG, CT-27SL33MUG...
  • Page 25 A-BOARD TNP2AH047MA CT-27SL13MG, CT-27SL13MUG...
  • Page 26 A-BOARD TNP2AH047MB CT-27SL33MG, CT-27SL33MUG...
  • Page 27 A-BOARD TNP2AH047MA CT-27SL13MG, CT-27SL13MUG...
  • Page 28 A-BOARD TNP2AH047MB CT-27SL33MG, CT-27SL33MUG...
  • Page 29 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 30: 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 31 Leakage current cold check 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 32: Service Notes

    NOTE It is important to use an accurate, calibrated high voltage meter. Set the brightness, picture, sharpness and color controls to minimum. Measure the high voltage. The high voltage should be 30.55 ± 1.25kV. If the upper limit is out of tolerance, immediate service and correction is required to insure safe operation and to prevent the possibility of premature component failure.
  • Page 33 3. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal. Chip component installation 1. Put a small amount of solder on the board soldering pads. 2. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows.
  • Page 34 3. Remove the solder from all the pads of the Flat IC by using a de solder braid 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 35 IMPORTANT To protect against possible damage to the solid state devices due to arching or static discharge, make certain that all ground wires and CRT DAG wire are securely connected. CAUTION The power supply circuit is above earth ground and the chassis cannot be polarized.

  • Page 36: Eeprom Replacement

    4. Prepare short jumper and HHS jig. Procedure: 1. Connect the short jumper between TPD16 & TPD17. 2. Connect the jumper diode between TPD14 and TPD15 (anode connected to TPD15 and cathode to TPD14). 3. Apply 75VAC to AC input of isolation transformer. 4.

  • Page 37: About Lead Free Solder (Pbf)

    4. With “VOL” keys adjust the correct value according with the service adjustment table (see “Service Mode” section). 5. Change to the next ID switch register with “CH” keys and repeat the same procedure as step 4. 6. When replacing a new EEPROM be sure to set the correct ID switch values for each model.
  • Page 38 CAUTION - Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30 ~ 40 °C) higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ±...

  • Page 39: Receiver Feature Table

    5. Receiver feature 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...

  • Page 40: Board Description Table

    FEATURE/MODEL CT-27SL13G/UG CT-27SL33G/UG EPJ/HPJ/MISC DIMENSIONS(WxDxH) 754.3x534.3x601.6mm29.69x21.03x23.68in 665.2x544.5x594.8mm26.18x21.43x23.41in WEIGHT (Kg/Lbs) 35.4/78.04 34.5/76.05 Note: Specifications are subject to change without notice or obligation. Dimensions and weights are approximate. 6. Board description table CT-27SL13G / CT-27SL13UG BOARD PART NUMBER DESCRIPTION TNP2AH047HB MAIN BOARD TNP2AA157AK CRT BOARD CT-27SL33G / CT-27SL33UG...

  • Page 41: Location Of Controls (Remote)

    Front controls are inside the front door 8. Location of controls (remote) 8.1. EUR7613Z60...
  • Page 42 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 43 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 44 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 45 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 46 Dress coil as was on the original CRT. 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.

  • Page 47: 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 48 Use cold or hot ground for the (-) lead of the DVM as needed. 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 ±...
  • Page 49 3. Press “ACTION” twice to exit menus. 4. Tune to the channel 124. 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 50 To confirm colors When in service mode (red “CHK” is displayed) press RECALL on the remote control to enter the 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).

  • Page 51: Service Adjustments (Electronic Controls)

    NAME DESCRIPTION REGISTER VALUE CT-27SL33G/UG/MG/ CT-27SL13G/UG/MG PCONT PIP CONTRAST H-POS HORIZONTAL POSITION H-WID HORIZONTAL WIDTH PINCUSHION 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...
  • Page 52 picture controls. Do not adjust the SCREEN VR after the sub-brightness is set. This adjustment is factory set. Do not adjust unless repairs are made to associated circuit, the CRT Board or when the CRT is replaced. Preparation 1. Apply a colorbar pattern. 2.
  • Page 53 the main signal PIP level; 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 54 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 55 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 56 - 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.
  • Page 57 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 58 center mark. 2. Adjust linearity data “V-C” so that interval of “a” is same as “b” (a =b). 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 59 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 60 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 61 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 62: Identification Of Main Components

    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 63 13.3. C-Board main components C-Board main components...
  • Page 64 13.4. Y-Board main components Y-Board main components...
  • Page 65 14. Reference for PDF colors...

  • Page 66: 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 68 17.2. Notas de esquemáticos en español...

  • Page 70: 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 71 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 72 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 73 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 74 Ref. No. Part No. Part Name & Description Remarks 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 ECKR1H103ZF5 CAP C .01UF-Z-50V C958 ECA2CM470E CAP E 47UF-160V C959 ECKW2H103ZF7 CAP C .01UF-Z-500V C960...
  • Page 75 Ref. No. Part No. Part Name & Description Remarks 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 C1853 ECJ2VB1C104K CAP C .1UF-K-16V CT-27SL33G CT-27SL33UG C1854 ECA1CM470B CAP E 47UF/16V CT-27SL33G CT-27SL33UG C1855 TCJ2VF1H103Z CAP C .01UF-Z-50V CT-27SL33G CT-27SL33UG...
  • Page 76 Ref. No. Part No. Part Name & Description Remarks 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 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C3012 ECA1HM010B CAP E 1UF-50V C3013 ECA1CM100B CAP E 10UF-16V C3014...
  • Page 77 Ref. No. Part No. Part Name & Description Remarks 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 D811 B0HAJP000015 DIODE D820 MA2C165001VT DIODE D821 MAZ40470HF...
  • Page 78 Ref. No. Part No. Part Name & Description Remarks IC501 NC7SZU04M5X INT CKT IC551 AN78M09LB INT CKT IC552 AN78M05LB PLUS 5V AVR IC801 STRW5634 INT CKT IC802 0N3171RLF INT CKT IC1801 M65665CFP INT CKT CT-27SL33G CT-27SL33UG IC1802 PQ1X331M2ZP INT CKT CT-27SL33G CT-27SL33UG IC1803 MM1501XNRE INT CKT CT-27SL33G CT-27SL33UG...
  • Page 79 Ref. No. Part No. Part Name & Description Remarks 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 L2301 EXCELSA35T FERRITE BEAD L2303 EXCELSA39V FERRITE BEAD L2305 EXCELSA35V FERRITE BEAD TRANSISTORS Q001 2PD601AR-115...
  • Page 80 Ref. No. Part No. Part Name & Description Remarks Q2350 2PB709AR-115 TRANSISTOR Q2361 2PD601AR-115 TRANSISTOR Q2362 2PD601AR-115 TRANSISTOR Q2363 2PB709AR-115 TRANSISTOR Q3001 2PD601AR-115 TRANSISTOR Q3002 2PD601AR-115 TRANSISTOR Q3193 2PD601AR-115 TRANSISTOR Q3194 2PD601AR-115 TRANSISTOR Q4801 2PD601AR-115 TRANSISTOR RELAYS RL801 K6B1AGA00042 RELAY RESISTORS R001 ERJ6GEYJ103V...
  • Page 81 Ref. No. Part No. Part Name & Description Remarks 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 ERJ6GEYJ221V RES M 220-J-1/10W R062 ERJ6GEYJ472V RES M 4.7K-J-1/10W R063 ERDS2TJ101T RES C 100-J-1/4W R064 ERJ6GEYJ473V RES M 47K-J-1/10W R065...
  • Page 82 Ref. No. Part No. Part Name & Description Remarks 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 ERJ6ENF3481V RES M 3.48K-F-1/10W R384 ERJ6ENF7500V RES M 750-F-1/10W R385 ERDS1FJ150P RES M 15-J-1/2W R389 ERJ6GEYJ102V RES M 1K-J-1/10W R390...
  • Page 83 R563 ERG3FJ150H RES M 15-J-3W Ref. No. Part No. Part Name & Description Remarks R564 ERDS2TJ563T RES C 56K-J-1/4W R565 ERDS2TJ683T RES C 68K-J-1/4W R566 ERG3FJ470H RES M 47-J-3W CT-27SL33G CT-27SL33UG R568 ERG3FJ470H RES M 47-J-3W CT-27SL33G CT-27SL33UG R592 ERJ6GEYJ472V RES M 4.7K-J-1/10W R605 ERDS2TJ103T...
  • Page 84 Ref. No. Part No. Part Name & Description Remarks R961 ERQ1CJP331S RES F 330-J-1W R962 ERDS2TJ330T RES C 33-J-1/4W R963 ERDS2TJ330T RES C 33-J-1/4W R964 ERDS2TJ471T RES C 470-J-1/4W R965 ERDS2TJ563T RES C 56K-J-1/4W R966 ERDS1FVJ471T RES C 470-J-1/4W R967 ERDS2TJ563T RES C 56K-J-1/4W R968...
  • Page 85 Ref. No. Part No. Part Name & Description Remarks R2204 ERJ6GEYJ102V RES M 1K-J-1/10W R2205 ERDS2TJ101T RES C 100-J-1/4W R2206 ERDS2TJ273T RES C 27K-J-1/4W R2307 ERDS2TJ222T RES C 2.2K-J-1/4W R2320 ERJ6GEYJ103V RES M 10K-J-1/10W R2351 ERJ6GEYJ751V RES M 750-J-1/10W R2352 ERJ6GEYJ152V RES M 1.5K-J-1/10W R2356...
  • Page 86 Ref. No. Part No. Part Name & Description Remarks R3039 ERJ6GEYJ183V RES M 18K-J-1/10W R3041 ERJ6GEYJ472V RES M 4.7K-J-1/10W R3042 ERJ6GEYJ472V RES M 4.7K-J-1/10W R3101 ERJ6GEYJ334V RES M 330K-J-1/10W R3102 ERJ6GEYJ334V RES M 330K-J-1/10W R3103 ERJ6GEYJ334V RES M 330K-J-1/10W R3104 ERJ6GEYJ334V RES M 330K-J-1/10W R3131...
  • Page 87 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 89 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 90 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 91 Measure the high voltage. The high voltage should be 29.25 ± 1.25kV. If the upper limit is out of tolerance, immediate service and correction 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 92 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 93 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 94 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 95 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 33kV.
  • Page 96 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 97 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 98 FEATURE/MODEL CT-27C8G CT-27L8G/UG/SG CT-27G8G/ CHASSIS BP404 AP404 MICRO 128K MENU LANGUAGE ENG/SPAN/FR CLOSED CAPTION V-CHIP (USA/CANADA) CHANNEL COUNT REMOTE CONTROL EUR7613Z10 EUR7713010 CRT SUPPLIER MDDA CHASSIS NA10 COMB FILTER DIGITAL V/A NORM (X=BOTH) MTS/SAP/DBX BUILT-IN AUDIO POWER 1.5Wx2 (10%) No. OF SPEAKERS AI SOUND A/V IN (REAR/FRONT) 2(2/1)
  • Page 99 NOTE When ordering a replacement board assembly, append an “S” to the board number EXAMPLE To order the A Board, for CT-27G8G the replacement board is TNP2AH047GAS. 7. TV Location of controls...
  • Page 100 8. Location of controls (remote) 8.1. EUR7713010 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. EUR7613Z10...
  • Page 101 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 102 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 103 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) C10 & C11. 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.
  • Page 104 IMPORTANT NOTICE 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 (CT-27C8G). Back Cover (CT-27L8G/UG/SG, CT-27G8G/UG)
  • Page 105 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 106 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 107 A-BOARD TEST VOLTAGE POINT TPD14 131.0 ± 2.0V SOUND C823 (+) 18.1 ± 1.0V STB12V C827 (+) 12.8 ± 1.0 V 220V TPA14 217 ± 10 V VERTICAL TPD8 27.4 ± 1.5V IC551 pin 3 9.0 ± 0.5V IC552 pin 3 5.0 ±...
  • Page 108 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 109 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 110 NAME DESCRIPTION REGISTER VALUE CT-27C8G CT-27G8G/UG CT-27L8G/UG/SG ID2* ID SWITCH 2 ID3* ID SWITCH 3 IMPORTANT: These table values are approximated and could change due to 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.
  • Page 111 GND level at TP35. (See waveform detail). 2. In service mode, select DAC for contrast adjustment “CONT”, and adjust data to obtain between 7.5IRE and 100IRE level at TP35. (See waveform detail) 12.2. Color output adjustment / Service DAC adjustment (COLOR, TINT) NOTE if a rainbow pattern generator is available perform the following procedure;...
  • Page 112 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 (0.35 Vp). TP37 Waveform. 4. Connect the oscilloscope to TP35 and GND. 5.
  • Page 113 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). 5.
  • Page 114 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 PROCEDURE 1. Connect the oscilloscope to KG (CRT-Board). 2.
  • Page 115 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. Use this feature when deflection adjustment gets off adjustment to the point that it cannot be adjusted back easily.
  • Page 116 1. Apply a crosshatch pattern 2. Normalize the picture settings. PROCEDURE 1. Enter service mode, select DAC adjustment / “V-POS” and adjust monoscope pattern to the center vertical position of the CRT center mark. 2. Adjust linearity data “V-C” so that interval of “a” is same as “b” (a= 3.

  • Page 117: Identification Of Components

    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” and “b” until b-a ± 1.5mm 3.
  • Page 118 13.1.1. C-Board Chassis C-Board component locations 13.1.2. A-Board Chassis A-Board chassis (Top view)
  • Page 119 13.1.3. A-Board Surface-mounted components A-Board (bottom view)
  • Page 121 14. Reference for PDF Colors 15. Conductor Views 15.1. A-Board Printed Circuit (Left Side) 15.2. A-Board& C Board Printed Circuit (Right Side) 16. Block Diagrams 16.1. Video Signal Block Diagram 16.2. Audio Signal Block Diagram 17. Schematics 17.1. English Schematic Notes...
  • Page 123 17.2. Notas de Esquemáticos en Español...

  • Page 125: Parts List

    17.3. A-Board Schematic TNP2AH047GA/GB (page 1 of 4) 17.4. A-Board Schematic TNP2AH047GA/GB (page 2 of 4) 17.5. A-Board Schematic TNP2AH047GA/GB (page 3 of 4) 17.6. A-Board Schematic TNP2AH047GA/GB (page 4 of 4) 17.7. Voltages 17.8. Waveforms 18. Parts Location 19. Parts List 19.1.
  • Page 126 19.2. Parts List...
  • Page 127 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 128 Ref. No. Part No. Part Name & Description Remarks 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 ECJ2VF1C105Z CAP C 1.0UF-Z-16V C054...
  • Page 129 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 ECA1VHG471B 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 130 Ref. No. Part No. Part Name & Description Remarks C2202 ECA1HM2R2B CAP E 2.2UF-50V C2203 ECA1HM4R7B CAP E 4.7UF-50V C2204 AP106K016CAE CAP T 10UF/16V C2205 ECA1HMR33B CAP E .33UF-50V C2206 ECQB1H223JF3 CAP P .022UF-J-50V C2207 AP335K016CAE CAP T 3.3UF/16V C2208 ECJ2VB1C104K CAP C .1UF-K-16V / CT-27G8G CT-27G8UG CT-27L8G CT-27L8UG C2208...
  • Page 131 Ref. No. Part No. Part Name & Description Remarks D531 MA2C165001VT DIODE D551 B0HAMM000072 DIODE FAST RECOVERY D554 AU02V0 DIODE D556 MA2C165001VT DIODE D557 MAZ40270LF DIODE ZENER D558 B0HANV000008 DIODE D559 DIODE D561 AU02V0 DIODE D606 MA2C165001VT DIODE D801 D3SBA60-4103 DIODE D803 MAZ41200MF...
  • Page 132 Ref. No. Part No. Part Name & Description Remarks IC451 AN5522 VERTICAL OUTPUT AMPLIFIER IC501 NC7SZU04M5X H-DRIVE INVERTER IC551 AN78M09LB 9V VOLTAGE REGULATOR IC552 AN78M05LB 5V VOLTAGE REGULATOR IC801 STRW5634 MAIN POWER SUPPLY IC802 0N3171RLF OPTO-COUPLER IC2201 AN5829S-E1V IC2301 AN17807A AUDIO AMPLIFIER IC3001 MM1114XFBE...
  • Page 133 Ref. No. Part No. Part Name & Description Remarks Q357 2SD601ARTX TRANSISTOR Q358 2SD601ARTX TRANSISTOR Q359 2SD601ARTX TRANSISTOR Q360 2SB709ARTX TRANSISTOR Q361 2SB709ARTX TRANSISTOR Q362 2SB709ARTX TRANSISTOR Q411 2SB0710AQL TRANSISTOR Q412 2SD0602AQL TRANSISTOR Q451 2SB709ARTX TRANSISTOR Q501 2SC4212HLB TRANSISTOR Q551 2SC5902000LK TRANSISTOR Q560...
  • Page 134 Ref. No. Part No. Part Name & Description Remarks R041 ERJ6GEYJ222V RES M 2.2K-J-1/10W R042 ERJ6GEYJ222V RES M 2.2K-J-1/10W R043 ERJ6GEYJ153V RES M 15K-J-1/10W R044 ERJ6GEYJ101V RES M 100-J-1/10W R045 ERDS2TJ101T RES C 100-J-1/4W R046 ERJ6GEYJ102V RES M 1K-J-1/10W R047 ERJ6GEYJ472V RES M 4.7K-J-1/10W R048...
  • Page 135 Ref. No. Part No. Part Name & Description Remarks R372 ERJ6GEYJ101V RES M 100-J-1/10W R373 ERJ6GEYJ101V RES M 100-J-1/10W R374 ERJ6GEYJ102V RES M 1K-J-1/10W R375 ERJ6GEYJ102V RES M 1K-J-1/10W 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...
  • Page 136 Ref. No. Part No. Part Name & Description Remarks R552 ERDS1FJ1R0T RES C 1.0-J-1/2W R557 ERJ6GEYJ103V RES M 10K-J-1/10W R558 ERQ1CKPR56S RES F .56-K-1W R559 ERG2FJ683H RES M 12K-J-2W R561 ERG2FJ102H RES M 1K-J-2W R562 ERG2FJ270H RES M 27-J-2W R563 ERG3FJ150H RES M 15-J-3W R564...
  • Page 137 Ref. No. Part No. Part Name & Description Remarks R2357 ERJ6GEYJ472V RES M 4.7K-J-1/10W R2362 ERJ6GEYJ221V RES M 220-J-1/10W R2364 ERJ6ENF1001V RES M 1K-F-1/10W R2370 ERJ6GEYJ222V RES M 2.2K-J-1/10W R3002 ERJ6GEYJ221V RES M 220-J-1/10W R3003 ERJ6GEYJ221V RES M 220-J-1/10W R3004 ERDS2TJ101T RES C 100-J-1/4W R3005...
  • Page 138 Ref. No. Part No. Part Name & Description Remarks T801 ETS35AA6B5NC TRANSFORMER T3001 TF0402B04P03 TRANSFORMER T3002 TF0402B04P03 TRANSFORMER CRYSTALS/FILTERS X001 A1100005BD CRYSTAL OTHERS TNR001 ENG36621G TUNER M001 TSX2AA0361 AC LINE CORD M002 TMW2A97121 STRAIN RELIEF FOR AC CORD / CT-27G8G CT-27G8UG CT-27L8G CT-27L8UG CT-27L8SG M003 TJSC00300...
  • Page 139 CT-27C8G / CT-27G8G / CT-27G8UG / CT-27L8G / CT-27L8UG / CT-27L8SG A-BOARD 1 of 4 TNP2AH047GA/GB...
  • Page 140 CT-27C8G / CT-27G8G / CT-27G8UG / CT-27L8G / CT-27L8UG / CT-27L8SG A-BOARD 2 of 4 TNP2AH047GA/GB...
  • Page 141 CT-27C8G / CT-27G8G / CT-27G8UG / CT-27L8G / CT-27L8UG / CT-27L8SG A-BOARD 3 of 4 TNP2AH047GA/GB...
  • Page 142 CT-27C8G / CT-27G8G / CT-27G8UG / CT-27L8G / CT-27L8UG / CT-27L8SG A-BOARD 4 of 4 TNP2AH047GA/GB...
  • Page 143 A - BOARD IC001 IC002 IC501 IC2201 ..0.00 ..2.50 ..0.00 ..0.00 ..1.60 ..2.80 .
  • Page 144 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...

  • Page 145: Audio Signal Path Block Diagram

    Audio signal path block diagram A-BOARD JK3001 REAR L&R Mixed AUDIO *(1) MPX IN IC2201 R-OUT L-OUT JK3001 REAR AUDIO *(2) R-IN L-IN IC2301 JK3002 AUDIO AMP FRONT AUDIO R-OUT L-OUT MUTE ON/OFF IC001 CT-27G8G / CT-27G8UG *(1) CT-27C8G / CT-27L8G / CT-27L8UG / CT-27L8SG *(2)
  • Page 146 CT-27C8G / CT-27G8G / CT-27G8UG / CT-27L8G / CT-27L8UG / CT-27L8SG A-BOARD 1 of 2 TNP2AH047...
  • Page 147 CT-27C8G / CT-27G8G / CT-27G8UG / CT-27L8G / CT-27L8UG / CT-27L8SG A-BOARD 2 of 2 TNP2AH047 C-BOARD TNP2AA122...

  • Page 148: 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 *(2) Y/V1 MCOMP IN MV IN MU IN JK3001 IC001 REAR VIDEO *(1) R OUT G OUT B OUT MSCIN JK3002 FRONT VIDEO Q360 Q361 Q362...
  • Page 149 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 1.88 Vp-p 3.28 Vp-p IC451 PIN 1 (VERT IN) IC001 PIN 36 (FBP IN) IC001 PIN 50 (OSC) Q4111 B (V DRIVE) 30.4 Vp-p...

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