Panasonic CT-2701 Service Manual
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Panasonic CT-2701 Service Manual

Panasonic CT-2701 Service Manual

Chassis tmc589
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Service Manual
This service manual is issued as a service guide for the models listed above.
Included in this manual are a set of schematic, block diagrams, functional descriptions, alignment procedures,
disassembly procedures and a complete parts list.
WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.
The service technician is required to read and follow the Safety Precautions and Important Safety Notice
Color Television
Main Manual
Panasonic
Models
CT-2701
Copyright 2003 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
ORDER NO. MTNC030940C1
B05
Chassis
TMC589
in this Main Manual.

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Summary of Contents for Panasonic CT-2701

  • Page 1 Main Manual Panasonic Models Chassis CT-2701 TMC589 This service manual is issued as a service guide for the models listed above. Included in this manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly procedures and a complete parts list.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ..............................A1-1 Important Safety Notice ..........................A2-1 Service Notes ............................. A2-2, A2-3 About lead free solder (PbF) ........................A2-4 GENERAL SPECIFICATIONS ........................A3-1~A3-5 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF ANODE CAP ......................2. NOTE FOR THE REMOVAL OF THE MAIN PCB ................SERVICE MODE LIST ..........................

  • Page 3: Important Safety Notice

    Important Safety Notice Special components are used in this television set which are important for safety. These parts are identified on the schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is essential that these critical parts are replaced with the manufacturer's specified replacement part to prevent X-ray radiation, shock, fire or other hazards.

  • Page 4: Service Notes

    Service Notes Note: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose. Leadless Chip Component How to Replace Flat-IC (surface mount)
  • Page 5 Service Notes (Continued) IMPORTANT: To protect against possible damage to the WARNING: This Receiver has been designed to meet solid state devices due to arcing or static discharge, make or exceed applicable safety and X-ray radiation certain that all ground wires and CTR DAG wire are protection as specified by government agencies and securely connected.

  • Page 6: About Lead Free Solder (Pbf)

    About lead free solder (PbF) Note: 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(Tin)+Ag(Silver) + Cu(Copper).

  • Page 7: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 27 inch / 676.0mmV System CRT Type Normal Deflection degree Magnetic Field BV/BH +0.45G/0.18G Color System NTSC Speaker 2Speaker Position Front Size 2.0 x 3.5 Inch Impedance Sound Output 1.5 + 1.5 W 10%(Typical) 1.0 + 1.0 W NTSC3.58+4.43 /PAL60Hz...
  • Page 8 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Picture(Matsushita Type) Picture Contrast(Picture) Brightness Color Tint Sharpness Normal Audio Bass Treble Balance Normal Mode AI Sound On/Off CH Set Up Language Mode Auto Program Manual Program Timer Lock Exit CH Label Favorite CH Component DVD/DTV Control Level...
  • Page 9 GENERAL SPECIFICATIONS G-10 Remote Unit RC-GP Control Glow in Dark Remocon Format KASEIKYO Custom Code 08-00 h Power Source Voltage(D.C) UM size x pcs UM-3(AA) x 2 pcs Total Keys Keys Keys Power CH Up(UP) CH Down(DOWN) Volume Up(Right) Volume Down(Left) TV/Caption/Text CH1/CH2 TV/Video(TV/AV)
  • Page 10 GENERAL SPECIFICATIONS G-12 Accessories Owner's Manual Language English/Spanish w/Guarantee Card Remote Control Unit Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer DC Car Cord (Center+) Guarantee Card Warning Sheet Circuit Diagram Antenna Change Plug Service Facility List Important Safeguard Dew/AHC Caution Sheet AC Plug Adapter Quick Set-up Sheet...
  • Page 11 GENERAL SPECIFICATIONS G-17 Material Cabinet Cabinet Front PS 94V0 DECABROM Cabinet Rear PS 94V0 DECABROM Non-Halogen Demand Eyelet Demand G-18 Environment Pb Free Lead-free Solder Cd Free A3-5...

  • Page 12: Removal Of Anode Cap

    DISASSEMBLY INSTRUCTIONS INSTALLATION 1. REMOVAL OF ANODE CAP 1. Clean the spot where the cap was located with a small Read the following NOTED items before starting work. amount of alcohol. After turning the power off there might still be a potential voltage that is very dangerous.

  • Page 13: Service Mode List

    SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 1 second. Remocon Key Set Key Operations Releasing of V-CHIP PASSWORD.

  • Page 14: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: CONSTANT VOLTAGE (AV) Read and perform these adjustments when repairing the Place the set with Aging Test for more than 15 minutes. circuits or replacing electrical parts or PCB assemblies. Using the remote control, set the brightness and contrast to normal position.
  • Page 15 ELECTRICAL ADJUSTMENTS 2-7: VERTICAL SIZE (RF) 2-12: SEPARATION 1, 2 (RF) Receive the cross hatch signal from the Pattern Please do the method (1) or method (2) adjustment. Generator. Method (1) Using the adjustment control, set the brightness and contrast to normal position. Set the multi-sound signal generator for each different Activate the adjustment mode display of Fig.
  • Page 16 ELECTRICAL ADJUSTMENTS 2-14: SUB TINT/SUB COLOR (RF, AV) 2-15: CONTRAST MANUAL (RF, AV) Receive the color bar pattern. Activate the adjustment mode display of Fig. 1-1 and Connect the oscilloscope to TP024. press the channel button (17) on the remote control to Activate the adjustment mode display of Fig.

  • Page 17: Purity And Convergence Adjustments

    ELECTRICAL ADJUSTMENTS 3. PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.

  • Page 18: Electrical Adjustment Parts Location Guide (Wiring Connection

    ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB TP024 R805 CP806 R803 TP022 J801 CP803B CP802B CP801 CD802 CP803A J705 J701 CP601 J707 FB401 VR403 VR401 VR404 VR402 TP401 CP1001 SPEAKER T501 AC IN S501B S501A J710 J711 J712...

  • Page 19: Block Diagram

    BLOCK DIAGRAM AV/S SW IC IC1502 NJM2283M COMB FILTER IC IC1501 TC90A45F J705 CH. DOWN MICON/CHROMA IC IC101 OEC7094B VOL. DOWN CH. UP RGB Proc.2 VOL. UP OSD SW Q801, Q804 CONTRAST BRIGHTNESS RED AMP RGB OUTPUT Stage POWER DRIVE Chroma Proc.

  • Page 20: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE SW103 SW105 J710 Q1507 W011 SW102 SW101 SW104 6.3A125VOR250V C505_2 Q1502 R603_1 W095 W858 TP024 W010 FH502 FH501 F501 J801 Q1501 TP022 Q1505 CD501 Q608 Q603 L001 W831 W008 W034 S501B TP023 Q607 D604 W006...
  • Page 21 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R722 R707 R004 R003 IC302 R533 R532 R909 R905 R908 TMC589A IC901 R1006 R601 R123 R113 R710 R115 R731 R131 R813 R604 R627 R816 R617 R1518 R810 IC1502 IC1501 R621 R1501 R126...
  • Page 22 MICON/CHROMA/TUNER SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO COMBI/FILTER R621 Y_IN H.CTL Q607 KTC3198 R618 ACCESSORY 8.2K 1/4W FROM/TO DEFLECTION/CRT C118 BT001 R608 R6SPTT 6.3V CLAMP C653 R124 22K 1/4W 100 1/4W C101 TM101 R110 V_OUT C632_1 BT002 EUR7713020 0.01 F R109 R6SPTT C630 V_FEEDBACK...
  • Page 23 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) (CRT PCB) CP802A 51048-0610 CP802B 51048-0610 FROM/TO MICON/CHROMA/TUNER CLAMP CLAMP CLAMP C813 CLAMP 0.001 B G.OUT G.OUT G.OUT G.OUT R.OUT R.OUT R.OUT R.OUT V-OUT IC IC401 LA78041 B.OUT B.OUT B.OUT B.OUT CP803A 51048-0410 V_OUT THERMAL CP803B 51048-0410 PROTECTION...

  • Page 24: Power Schematic Diagram

    POWER SCHEMATIC DIAGRAM (MAIN PCB) RELAY DRIVE Q504 D516 KTC3198 1SS133 TO DEFLECTION/CRT R521 RY501 UNREG+18V ALKS321 150 2W T501 81400694 15.6 15.6 140.5 C516 W848 TO SOUND 500V 0.0022 R517_1 CD502 140.5 D505 003P-2100 SOUND+B DEGAUSS COIL L503 30DF6-FC 144.0 8R270010 CP502...
  • Page 25 SOUND SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/CHROMA/TUNER R308 AUDIO_MUTE 1K 1/4W R319 C309 0.039 C920 BUFFER Q901 KTA1266 C921 R905 L IN L ONT Tone Volume 2.2K SURR Balance Control Control /MUTE BUFFER MODE Q902 control R IN Vref R OUT KTA1266 OUT SW IIC Decoder...
  • Page 26 COMBI/FILTER SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO MICON/CHROMA/TUNER STEREO+5V C_IN Y_IN C1523 0.01 C1514 FROM/TO AV VIDEO_IN BUFFER V1_SW Q1502 KTC3198 R1508 C1511 0.01 B C1512 VI_C_IN C1502 VIDEO_OUT 47P CH C1533 R1501 BUFFER D.VCC D.VSS VI_Y_IN Q1501 KTA1266 C1515 S_VIDEO R1503 BUFFER KILLER...
  • Page 27 AV SCHEMATIC DIAGRAM (MAIN PCB) VIDEO_3_IN AV (FRONT) J710 C702 R733 HTJ-032-03AY C701 R734 L3_IN AV (FRONT) J711 HTJ-032-03AW R3_IN S803X AV (FRONT) J712 FROM/TO SOUND HTJ-032-03AR FRONT_AUDIO_L FRONT_AUDIO_R REAR_AUDIO_R REAR_AUDIO_L AUDIO_OUT_R AUDIO_OUT_L C729 R724_1 C720 R725 BUFFER S_VIDEO 1.5K BUFFER Q702 J705...

  • Page 28: Voltage List

    VOLTAGE LIST IC101 IC199 IC901 IC1501 Volt. Volt. Volt. Volt. Volt. IC401 Volt. 26.1 IC1502 Volt. IC501 Volt. IC1001 Volt. IC702 Volt. 17.6 16.8 18.9 16.8 IC302 Volt. Volt.
  • Page 29 VOLTAGE LIST TRANSISTOR Q402 Q407 Q408 Q409 Q501 Volt. Volt. Volt. Volt. Volt. Q502 Q504 Q507 Q509 Q512 Volt. Volt. Volt. Volt. Volt. 122.9 Q601 Q602 Q603 Q606 Q607 Volt. Volt. Volt. Volt. Volt. 11.3 Q608 Q610 Q701 Q702 Q703 Volt.

  • Page 30: Micon/Chroma/Tuner

    WAVEFORMS MICON/CHROMA/TUNER 200V 20µs/div 20V 20µs/div 1V 20µs/div Q401 R611 IC101 PIN 51(G OUT) 10V 5ms/div 200mV 20µs/div 3 200mV 20µs/div IC401 PIN 6 IC101 PIN 30(Y(Y/C) IN) IC101 PIN 46(H OUT) DEFLECTION/CRT 0.5V 5ms/div 10V 5ms/div 14 0.5V 5ms/div IC101 PIN 38(V RAMP OUT) CP401 PIN 6 IC401 PIN 7...
  • Page 31 WAVEFORMS 31 200mV 1ms/div 22 50V 20µs/div R1014 R807 SOUND 25 0.5V 1ms/div 0.5V 1ms/div C919 CP1001 PIN 2 26 200mV 1ms/div 0.5V 1ms/div IC901 PIN 22 C1008 200mV 1ms/div IC901 PIN 21 28 200mV 1ms/div R1015 NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 32: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 102B 102C 102A PCB110 (CRT PCB ASS'Y) 102C 101F 101D 101D PCB010 (MAIN PCB ASS'Y) 101C 101E 101B 101A...

  • Page 33: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. Part No. Description Reference No. A3N422M720 CABINET,FRONT ASSY 101A 701WPJC389 CABINET,FRONT 101B 711WPCA052 BADGE,BRAND 101C 713WPA0239 GUIDE,REMOCON 101D 735WPAA484 BUTTON ASS'Y 101E 800WQ00065 FELT SHEET 101F 800WQ0A022 FELT SHEET A3N422M740 CABINET,BACK ASSY 102A 702WPA0931 CABINET,BACK 702WPAA552 CABINET,BACK 102B 800WQ00066 FELT SHEET...

  • Page 34: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. Part No. Description Reference No. Location No. Part No. Description Reference No. RESISTORS RESISTORS R001 R002T2683J 68K OHM 1/2W ! R461 R65582010J R,FUSE OHM 1/2W R002 R002T2683J 68K OHM 1/2W ! R500 R0G3K2275K 2.7M OHM 1/2W R003 R903N8101J 100 OHM 1/8W...
  • Page 35 ELECTRICAL REPLACEMENT PARTS LIST Location No. Part No. Description Reference No. Location No. Part No. Description Reference No. RESISTORS CAPACITORS R760 R002T4391J 390 OHM 1/4W C315 E50HU50R1M 0.1 UF 50 V R801 R801R7221J 220 OHM 1/10W C316 E02LU5100M UF 50V R802 R002T2272J 2.7K OHM 1/2W...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Location No. Part No. Description Reference No. Location No. Part No. Description Reference No. CAPACITORS CAPACITORS C605 E50HU5010M UF 50V C1016 E02LF4222M 2200 UF 35V C606 E02LU1471M 470 UF 10V C1017 E50HU0470M UF 6.3V C609 CS0RF0414Z 0.01 UF 50V F C1502 CS0RCH4Q1J CC...
  • Page 37 ELECTRICAL REPLACEMENT PARTS LIST Location No Part No. Description Reference No Location No Part No. Description Reference No. P.C.BOARD ASSEMBLIES ! IC501 0002E00610 PHOTO COUPLER LTV-817M-VB PCB110 A3N422M110 PCB ASS'Y TCC446A IC702 I0QS02246L IC NJM2246L MISCELLANEOUS IC901 I01FF58290 IC AN5829S B501 024HT03553 CORE,BEADS W5RH3.5X5X1.0...
  • Page 38 Printed in U.S.A.

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