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Service Manual
Appearance and inputs my vary depending on model
This Simplified Service manual is issued as a service guide for the models of the NA6LM family listed above. Included
in this manual are a set of schematic, functional descriptions, alignment procedures, disassembly procedures, and a
complete parts list. For Block Diagrams Refer to Main Manual MTC9905021C1 (CT-2720HA).
"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" in this Manual.
Color Television
Simplified Manual
Models
CT-2511HDB
CT-2521HDB
CT-2721HDB
CT-3221HDB
®
ORDER NO. MTNC000929A1
B5
(NA6LM)
Panasonic
Chassis
Copyright 2000 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
AP335
BP355
BP307
AP357
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Table of Contents
Related Manuals for Panasonic CT-2511HDB
Summary of Contents for Panasonic CT-2511HDB
- Page 1 ORDER NO. MTNC000929A1 Service Manual Color Television Simplified Manual (NA6LM) Panasonic Models Chassis CT-2511HDB AP335 CT-2521HDB BP355 CT-2721HDB BP307 CT-3221HDB AP357 Appearance and inputs my vary depending on model This Simplified Service manual is issued as a service guide for the models of the NA6LM family listed above. Included in this manual are a set of schematic, functional descriptions, alignment procedures, disassembly procedures, and a complete parts list.
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Page 2: 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 3: Table Of Contents
Important Safety Notice ....2 Service Adjustments (Electronic Control)....21 Safety Precautions . -
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: Horizontal Oscillator Disable Circuit
Service Notes (Continued) Procedure: IMPORTANT: To protect against possible damage to the solid state devices due to arcing or static discharge, 1. Tune in a station to verify that the horizontal is make certain that all ground wires and CTR DAG wire in sync. -
Page 6: Receivers Feature Table
Receivers Feature Table FEATURE\MODEL CT-2511HDB CT-2521HDB CT-2721HDB CT-3221HDB Chassis NA6LM NA6LM NA6LM NA6LM Tuning system # of channels Menu language Closed Caption V-Chip 75 Ω input Remote SEPARATELY SEPARATELY SEPARATELY SEPARATELY Picture tube A63QDB891X A63QDB891X M68LG061X M80JUA061X SAMSUNG SAMSUNG AMEC... -
Page 7: Location Of Controls (Receiver)
Location of Controls (Receiver) VOLUME CHANNEL ACTION TV/VIDEO VIDEO AUDIO POWER Remote Control Front input jacks Sensor not available on some models. Figure 2. Location of Controls Receiver Quick Reference Control Operation Quick Reference Control Operation Power - Press to turn ON or OFF. Volume - Press to adjust Sound Level, or to adjust Audio Menus, Video Menus, and select operating features when menus are displayed Channel - Press to select programmed channels. -
Page 8: Disassembly For Service
Disassembly for Service Back Cover Note: Some tie-wraps that secure the wire dressings may need to be unfastened for chassis Remove all the screws marked with an arrow( removal. from the back of the Receiver (Fig. 3). C-Board - CRT Output Note: Screw configuration, type, and number of Plugs into the socket on the CRT neck. -
Page 9: Location Of Screws
Location of Screws 3 SCREWS 1 SCREW 1 SCREW 1 SCREW 1 SCREW 1 SCREW (Some models) Figure 3. Back Cover Removal. Note: Screw number my vary depending on model. - 9 -... -
Page 10: Identification Of Components
Identification of Components ANODE (HIGH VOLTAGE) DEFLECTION TRC (4 SCREWS) YOKE CONVERGENCE YOKE GROUND YOKE POSITION WEDGE C-BOARD SPEAKERS (4 SCREWS EACH) TUNER DI-BOARD A-BOARD T551 (FLYBACK) Note: Following the service, remember to dress the cables, as shown above. Figure 4. Rear View. - 10 -... -
Page 11: Chassis Service Adjustment Procedures
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 IC803’s heat sink when the HOT ground symbol ( ) is used. -
Page 12: Location Of Components
Location of Components DI-BOARD (Except CT-2511H) C-BOARD Z-BOARD (Except CT-2511H) A-BOARD LOCATION OF COMPONENTS IC803 SPEAKERS. TUNER IC001 MPU IC2301 AUDIO OUT Q551 HOR. D554 IC002 IC2302AUDIO OUR Q501 C552 IC101 VCJ IC2451 SOUND AGC OTHERS C809 IC451VERTICAL CONNECTORS T551 (FLYBACK) REMOTE SENSOR IC551 A/V INPUT (FRONT). -
Page 13: Purity And Convergence Procedures
Purity and Convergence Procedure Purity Adjustment Adjustment is necessary only if the CRT or the deflection yoke is replaced or if the setting was When the Receiver is in the Servicemen Mode for disturbed. The complete procedure consists of: making electronic adjustments, press the Recall button 1. - Page 14 Slightly tilt vertically and horizontally (do not rotate) the After vertical adjustment of the yoke, insert wedge at 11 deflection yoke to obtain a good overall convergence. o’clock position, then make horizontal If convergence is not reached at the edges, insert tilt adjustment.
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Page 15: Serviceman Mode (Electronic Controls)
Serviceman Mode (Electronic Controls) This Receiver has electronic technology using the I²C 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 performed by using “On Screen Display Menu”. (The Serviceman Adjustment Mode.) Note: It is suggested that the technician reads all the way through and understand the following procedure for Entering/Exiting the Serviceman Adjustment Mode;... -
Page 16: Sub-Data Adjustment
Press the Power Button on the Remote Control to select the Serviceman Adjustment. For Adjustments: 1.Press Channel Up/Down on the Note: Write Down the original 2.Press Volume Up/Down on the Remote Control to select one of value set (b in Fig. 13) for Remote Control to adjust the the available Service Adjustments each... -
Page 17: Options Adjustment
Press the Power Button on the Remote Control to select the Serviceman Adjustment For Adjustments: 1.Press Channel Up/Down on the Note: Write Down the original 2.Press Volume Up/Down on the Remote Control to select one of value set (b in Fig. 13) for Remote Control to adjust the the available Service Adjustments each... -
Page 18: To Check Purity
To Check Purity: Press the Recall Button on the Remote Control when in Serviceman Mode (red “CHK” is displayed) to enter the Purity Field Check Mode. NORMAL SCREEN Press Recall again to select desired field. BLUE GRN. WHITE SCREEN SCREEN SCREEN SCREEN Figure 14. -
Page 19: Instructional Flow Chart For Serviceman Mode
Instructional Flow Chart for Serviceman Mode IMPORTANT NOTE: Always Exit the Serviceman Mode Following Adjustments. NORMAL MODE Momentarily short FA1 to FA2 ( AGING MODE • Yellow “CHK” appears in upper left corner of screen. WHITE • Volume Up/Down operate rapidly. SCREEN •... - Page 20 Instructional Flow Chart for Serviceman Mode - Continued (ON REMOTE) CUT-OFF ADJUSTMENTS. RF-AGC C ITEMS. YNR SWITCH Adj. needed? DRIVE B DRIVE R (ON REMOTE) CUT-OFF B LOW-LEVEL CUT-OFF G POWER SEPARATION (ON REMOTE) CUT-OFF R HIGH-LEVEL SEPARATION MTS ADJUSTMENTS. INPUT LEVEL M ITEMS.
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Page 21: Service Adjustments
Service Adjustments (Electronic Controls) Sub-Brightness Preparation: 1. Apply a color bar signal pattern with 87.5% Serviceman DAC Adjustment (B2) modulation, 70% saturated color bar with a 100 Adjustment of this control is important for setting proper IRE white and 7.5 black. operation of customer brightness and picture controls. -
Page 22: Color Temperature Adjustment
Service Adjustments (Electronic Controls, cont.) Procedure: 2. In Serviceman Mode making electronic adjustment, select the Sub-Bright DAC (B2). 1. In the Serviceman Mode for making electronic 3. Press the R-Tune key on the remote. adjustments, select DAC Sub-Tint Adjustment 4. Observe the oscilloscope waveform at Horizontal (B1). -
Page 23: Horizontal Centering
Service Adjustments (Electronic Controls, cont.) Input Level Adjustment (M0) 21. EXIT the Serviceman Mode. 22. Adjust the Picture Menu Video Adjustments Bright Preparation: and Picture from low scale to high scale and check 1. Connect an RMS meter with filter jig as shown in Black and White tracking. -
Page 24: Clock Adjustment (Sb)
Service Adjustments (Electronic Controls, cont.) Clock Adjustment (Sb) 5. Calculate based following formula: Preparation: Connect the frequency counter from TPS1 (IC001 244.1406 pin13 Hz – ×10 0.901 ----------------------------------------------------------------- - Pin 13) to cold ground ( 244.1406 Note: Frequency Counter probe capacitance should be 8pF or less. -
Page 25: Hotel Mode
(No digital interface conneted to TV) The menu 3. Access the Set Up menu. screen can only be accessed using the ACTION button on the Panasonic remote control. • Use the CH and VOL buttons to highlight When the set is in Slave-to-Mate (STM), hotel... -
Page 26: Downloading Settings Into Other Tv
ON. mode, (No digital interface conneted to TV) 4. Connect the clone box to the Digital The menu screen can only be accessed using the ACTION button on the Panasonic remote Interface port on the back of the control. television. -
Page 27: Testing The Setttings In The Clone Box
Testing the Settings in the Clone Resetting the Television to Normal TV Mode This test compares the clone box settings with 1. Press the POWER ON button on the the television settings. The television must be clone box. • The LEDs will flash red and green to in Commercial (Hotel) mode. -
Page 28: Ic101 Vcj In/Out Pins And Functions
IC101 IN/OUT Pins and Functions (VJC) INPUT PINS OUTPUT PINS Chrominance VCO Ver. Pulse Output (3.58MHz) CW Out/Spot KILLER Off Chrominance APC Filter Input/X-ray Prot Out Hor. Pulse Output Ys & Ym Input External R Input X-ray Protection Input External G Input Hor. -
Page 29: Ic001 Mpu In/Out Pins And Functions
IC001 IN/OUT Pins and Functions (MPU) REMOTE SIGNAL AFC 1st T OSC1 INPUT AFC 2nd T OSC2 LOCK DETECT OUTPUT KEY SCAN ACTION / HSS VERSION VERSION MSB S-VHS VERSION ABL NOT USED NOT USED V SYNC NOT USED RESET TV/V PV1 TEST OSC NOT USED... -
Page 30: Parts List
REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO. - Page 31 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 32 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 33 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 34 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 35 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 36 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 37 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 38 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 39 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 40 REPLACEMENT PARTS LIST Models: CT-2511HDB, CT-2521HDB, CT-2721HDB, CT-3221HDB. Important Safety Notice: Components printed in BOLD TYPE have special characteristics important for safety. When replacing any of these components use only manufacturer’s specified parts. REF NO. PART NO. DESCRIPTION REF NO.
- Page 41 ALL MODELS C- Board Schematic & Voltages - Diagrama Eléctrico y Voltajes Tarjeta C CT-2511HDB & CT-2521HDB CT-2721HDB CT-3221HDB Note: Nota: Obtained voltages with a digital La medición de los voltajes se hizo con un Voltímetro Digital. multimeter. Q351 Q352 Q353 3.35...
- Page 42 CT-2511HDB A Board Schematic, Left Portion - Diagrama Eléctrico de la Tarjeta A, Sección Izquierda - 42 -...
- Page 43 CT-2511HDB A-Board Schematic, Right Portion - Diagrama Eléctrico Tarjeta A, Sección Derecha IMPORTANT SAFETY NOTICE THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES THAT ARE IMPORTANT FOR PROTECTION FROM X-RADIATION, FIRE AND ELECTRICAL SHOCK HAZARDS. WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS DESIGNATED WITH A THE SCHEMATIC.
- Page 44 ALL MODELS A and C Board Layout - Diagrama Impreso de las Tarjetas A & C IMPORTANT SAFETY NOTICE THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES THAT ARE IMPORTANT FOR PROTECTION FROM X-RADIATION, FIRE AND ELECTRICAL SHOCK HAZARDS. WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS DESIGNATED WITH A THE SCHEMATIC.
- Page 45 A-Board Waveforms - Formas de onda Tarjeta A ALL MODELS Waveforms - A-Board- Formas de Onda Tarjeta A 3.58MHz X’tal IC101 PIN 1 1.9V p-p [20µs] 24.4-29.8V p-p [5ms] 7.4V p-p [20µs] 336V p-p [5µs] 2.4V p-p [20µs] 3.58VCO IC101 PIN 41 (SYNC) IC451 PIN 13 IC101 PIN 33 (DET OUT) IC803 PIN 2...
- Page 46 CT-2521HDB A-Board Schematic - Diagrama Eléctrico Tarjeta A - 46 -...
- Page 47 CT-2521HDB A-Board Schematic, Right Portion - Diagrama Eléctrico Tarjeta A, Sección Derecha Schematic Notes Resistors are carbon 1/4W unless (BOLD LINE) indicates noted otherwise. the route of B+ supply. Capacitors are ceramic 50V unless schematic diagrams noted otherwise. current at the time of printing and Coil value notes is inductance in µH.
- Page 48 CT-2721HDB A-Board Schematic, Left Portion - Diagrama Eléctrico Tarjeta A, Sección Izquierda - 48 -...
- Page 49 CT-2721HDB A-Board Schematic, Right Portion - Diagrama Eléctrico Tarjeta A, Sección Derecha Schematic Notes Resistors are carbon 1/4W unless (BOLD LINE) indicates noted otherwise. the route of B+ supply. Capacitors are ceramic 50V unless schematic diagrams noted otherwise. current at the time of printing and Coil value notes is inductance in µH.
- Page 50 CT-3221HDB A-Board Schematic, Left Portion - Diagrama Eléctrico Tarjeta A, Sección Izquierda - 50 -...
- Page 51 CT-3221HDB A-Board Schematic, Right Portion - Diagrama Eléctrico Tarjeta A, Sección Derecha Schematic Notes Resistors are carbon 1/4W unless (BOLD LINE) indicates noted otherwise. the route of B+ supply. Capacitors are ceramic 50V unless schematic diagrams noted otherwise. current at the time of printing and Coil value notes is inductance in µH.
- Page 52 SOME MODELS DI & Z -Board Schematic Diagram, Layout and Voltages - Diagrama Eléctrico, Diagrama de Circuito Impreso y Voltajes Tarjetas Z & DI CT-2521HDB, CT-2721HDB &CT-3221HDB CT-3221HDB IDENTIFICACIÓN DE TERMINALES PARA TRANSISTORES EN CHIP CHIP TRANSISTOR LEAD DESIGNATION Nota: La medición de los voltajes se hizo con un Voltímetro Digital.
- Page 53 A-Board Voltages - Voltajes Tarjeta A ALL MODELS Q001 Q002 Q003 Q004 Q302 Q304 Q430 Q451 IDENTIFICACIÓN DE TERMINALES CHIP TRANSISTOR 0.72 5.93 5.05 5.24 2.92 2.93 0.40 0.63 PARA TRANSISTORES EN CHIP LEAD DESIGNATION 0.08 9.84 5.89 8.86 8.77 2.49 0.02 0.00...