Panasonic PT-51HX41E Service Manual
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Panasonic PT-51HX41E Service Manual

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Service Manual

This Service manual is issued as a service guide for the models of the P5P family listed above. Included in this manual
are a set of schematics, 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" in the Main Manual.
Models
PT-51HX41E
PT-51HX41CE
PT-56HX41E
PT-56HX41CE
PT-61HX41E
PT-61HX41CE
Copyright 2001 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
®
ORDER NO. MTNC010417C1
B2
HDTV MONITOR
Main Manual
(P5P)
Panasonic
Chassis
AP820
AP820
AP820
AP820
AP820
AP820

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Summary of Contents for Panasonic PT-51HX41E

  • Page 1: Service Manual

    ORDER NO. MTNC010417C1 Service Manual HDTV MONITOR Main Manual (P5P) Panasonic Models Chassis PT-51HX41E AP820 PT-51HX41CE AP820 PT-56HX41E AP820 PT-56HX41CE AP820 PT-61HX41E AP820 PT-61HX41CE AP820 This Service manual is issued as a service guide for the models of the P5P family listed above. Included in this manual are a set of schematics, alignment procedures, disassembly procedures and a complete parts list.

  • Page 2: Important Safety Notice

    Important Safety Notice Special components are used in this projection television which are important for safety. These components 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: Important Safety Tests

    Important Safety Tests Measuring H.V. 4. Connect a H.V. meter (static type, class 0.1) with high voltage leads to high voltage distributor The anode caps are cemented to the CRTs. To gain on FBT. (See Figure 4) access for high voltage measurement, remove the red CRT’s anode lead from the flyback transformer distributor.

  • Page 4: Table Of Contents

    Important Safety Notice ....2 Serviceman Mode (Electronic Controls) ..25 Quick Entry to Serviceman Mode: ..25 Safety Precautions .

  • Page 5: 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 6: Feature Table

    For optimum performance and readability, all other be measured. parts should be replaced with components of WARNING: This PTV has been designed to meet or identical specification. exceed applicable safety and X-ray radiation protection Feature Table PT-51HX41E/CE PT-51HX41E/CE FEATURE PT-56HX41E/CE FEATURE PT-56HX41E/CE PT-61HX41E/CE...

  • Page 7: Boards Designation

    Boards Designation BOARD PART NUMBER BOARD DESCRIPTION G-BOARD TNP2AA088 FRONT A/V INPUTS K-BOARD TNP2AA087 KEYBOARD R-BOARD TNPA0615AB IR SENSOR LR-BOARD TNPA1810 RED DRIVER LG-BOARD TNPA1811 GREEN DRIVER LB-BOARD TNPA1812 BLUE DRIVER MAIN CHASSIS, VIDEO PROCESSING, A-BOARD TNPH0370 CONVERGENCE, AUDIO PROCESSING PIP PROCESSING, SPLIT, SEARCH, DH-BOARD TNPA2033...

  • Page 8: Ptv - Location Of Controls

    PTV - Location of Controls POWER VOLUME CHANNEL ACTION TV/VIDEO Figure 5. Location of Controls PTV 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 9: Remote - Location Of Controls

    Remote - Location of Controls POWER Button Press to turn ON and OFF. MUTE Button Press to mute sound. A second press resumes sound. Press also to access and delete Closed Caption display. TV, VCR, DVD, CBS/CBL Component function buttons VOL (volume) Buttons Press to adjust TV sound level.

  • Page 10: Chassis & Boards Layout

    Chassis & Boards Layout Front Corner View Back View Figure 7. Chassis & Boards Layout. Board Description Main Chassis, Video Processing, Convergence, Blue CRT Output Audio Processing Green CRT Output Power Supply, Vertical Out, Horizontal Out Red CRT Output PIP Processing, Split, Search, Formats IR Sensor - 10 - Service Manual...

  • Page 11: Disassembly For Service

    Disassembly for Service Note: Board ground wires may have to be disconnected to disassemble some boards. All ground wires must be reconnected using jumper leads, if necessary, before power is applied to PTV for service. Speaker Grille Removal 2. Remove (3) screws from around the A/V terminal board (marked with arrows).

  • Page 12: Cabinet Front Removal

    Disassembly for Service (Continued) Cabinet Front Removal 4. Note exact orientation of each screen. The orientation and order of the screens is critical for (Figure 11) projecting pictures properly. Detailed screen 1. First remove the Speaker Grill and the center assembly can be seen in Figur e20.

  • Page 13: Disassembly For Crt Replacement

    Disassembly for Service (Continued) Disassembly for CRT Replacement X-RAYS SHIELD To facilitate CRT replacement, the complete CRT 10. To insure X-Rays radiation protection, the lens mounting chassis does not need to be removed. must be mounted in place at all times when power 1.

  • Page 14: Optical Block Position Adjustment

    5. Wire the anode lead wire. 7. Press yoke against bell of CRT and tighten the clamp just snug enough so it will not easily shift. 8. Assemble CRT focus lens assembly to new CRT Optical Bracket (Front) with (4) screws. Make sure focus lens adjustment nut is in the same location as on other CRT focus lens.

  • Page 15: Ptv Screen Assemblies

    PTV Screen Assemblies Protective Screen FRONT Label on lower left corner (front side) Labels on opposite sides Front Cabinet Label on Lenticular Screen lower left corner (note vertical ridges) (rear side) Fresnel Screen REAR (note circular ridges) Figure 20. Screen Assemblies. B+ Voltages Table Preparation: Set the following controls...

  • Page 16: Crt Set Up

    CRT Set Up CAUTION: Insure yoke plugs on the A-Board Procedure: are reconnected before turning the PTV 1. Enter to Service mode and set the following default ON to prevent damage to the horizontal DATA: output transistor and/or CRTs. • H-PAR to +263 1.

  • Page 17: Focus - Optical Lens Adjustment

    3. Adjust red lens focus (mechanical) until focus is 4. Position the longer tab of the four-pole magnet to best. degrees (uncorrected position). (See 4. Adjust red focus VR again. Figure 27). 5. Repeat for blue focus VR while projecting blue only.

  • Page 18: Vertical Size Adjustment (Vsize)

    9. If the position of the dots moved after repeated 6. Remove lens covers enable digital adjustments, adjust until the movement of the dots convergence by changing DAC MUTE from 1 to 0. is minimized. 10. Turn the red focus VR fully clockwise. 11.

  • Page 19: Pincushion Adjustment (Pcc)

    Pincushion Adjustment (PCC) 9. Transfer lens cover from blue to red, so that blue is projected. Procedure: 10. Adjust blue deflection coil until the horizontal 1. Cover Red and Blue Lenses. center line matches the pattern of the grid and is 2.

  • Page 20: Coarse Adjustment Mode (Coarse)

    Raster Setup: “COARSE ADJ MODE” options press “TV/VIDEO” 1. Enter to service mode (red CHK). on remote again for 3 seconds. 2. In SET-UP (Roller Guide menu) 18. In “FINE ADJUSTMENT MODE” options, press CONVERGENCE 1 set all values to 0. “MUTE”...
  • Page 21 5. Press “7” then “ACTION” key on remote to save 18. Press “7” then “ACTION” key on remote to save changes. changes 6. Enter to linearity “G-LINEAR” mode by pressing “TV/VIDEO”. 7. Adjust linearity by pressing VOL right-left until A=B (See Figure 39) Figure 42.

  • Page 22: Fine Adjustment Mode (Fine)

    25. Enter LINEARITY “R-LINEAR” mode Fine Adjustment Mode (FINE) pressing TV/VIDEO. (Convergence) 26. Adjust Horizontal linearity (See Figure 39) Note: It is strongly recommended to first read and 27. Enter to SIZE “R-SIZE” mode by pressing TV/ understand the following section prior to VIDEO make any adjustment.
  • Page 23 7. This mode afects a wide area around the cursor 17. Begin adjustment from the center to the edge of than other adjustment modes, See values on the screen. screen pressing RECALL remote left/right (seeFigure 47) 8. Begin adjustment from the center to the edge of the screen.

  • Page 24: Horizontal And Vertical Size Check

    TXFQD03ESER for 56” & 61”, is available ensure the proper size and shape of the alignment through Matsushita/Panasonic Services. rasters. It is 6 blocks across by 6 blocks high. The grid dimensions vary with the mode of operation.

  • Page 25: Serviceman Mode (Electronic Controls)

    16:9 & 4:3”), a 480i, 480p, 1080i test quick guide. pattern obtained from Panasonic TU-DST51A (Set-top box). Quick Entry to Serviceman Mode: When minor adjustments need to be done to the Exiting the Serviceman Mode: electronic controls, the method of Entering the...
  • Page 26 Service Mode (Electronic Controls, Continued) a. Press Note: Registers marked as FIXED are factory preset, buttons on the Remote Control to select any of the default value must not be changed the seven Service Sub Adjustment Addresses. (“a” in Figure 54) b.
  • Page 27 a. Press Note: Registers marked as FIXED are factory preset, buttons on the Remote Control to select any of the default value must not be changed the seven Service Sub Adjustment Addresses. (“a” in Figure 54) b. Press Important Note: Write down the original values (“b”...

  • Page 28: Instructional Flow Chart For Serviceman Mode

    Instructional Flow Chart for Serviceman Mode NORMAL MODE ENTRY TO SERVICEMAN MODE AGING MODE • Select CABLE Mode. • Press VOL UP and ACTION simultaneously on PTV • Set SLEEP time for 30 Min. • Yellow “CHK” appears in upper left corner of screen. •...
  • Page 29 Instructional Flow Chart for Serviceman Mode - Continued ON REMOTE CONTROL TO (previous/next adjustment ON REMOTE TO VOL VOL to make adjustment Press POWER or ACTION to exit the POWER adjustment. (ON REMOTE) EXIT Press POWER to exit DACs MENU then press ACTION POWER simultaneously for at least 2 seconds to exit...

  • Page 30: Hv_Feedback Voltage

    HV_Feedback Voltage Tint Adjustment (TINT) Procedure: This adjustment should be performed 1. Apply a NTSC all black pattern. Preparation: 5. Set the following in the user picture menu as 2. Connect meter (+) to TPD33 and (-) to TPGND1 follows: 3.

  • Page 31: Red, Green & Blue Screen Cutoff

    Service Mode (Electronic Controls, Continued) Red, Green & Blue Screen Cutoff MTS Circuit Adjustments 1. Use either a no input signal condition or raster from Note: It is important to adjust the MTS circuit in the the NTSC generator. order shown below. 2.

  • Page 32: Clock Adjustment (Clock)

    Service Mode (Electronic Controls, Continued) Note: Set the 30% modulation with the P.L and N.R. switches OFF then turn them ON while testing. 5. Adjust MTS High-Level Separation (SEPAH) data until the amplitude of the waveform measured on the scope is minimum. 6.

  • Page 33: Audio Signal Path Block Diagram

    Audio Signal Path Block Diagram Figure 61. Audio Signal Path Block Diagram - 33 - Service Manual...

  • Page 34: Video-Chroma Signal Path Block Diagram

    Video-Chroma Signal Path Block Diagram Figure 62. Video-Chroma Signal Path Block Diagram. - 34 - Service Manual...

  • Page 35: Iic Connection

    IIC Connection A-Board IC1002 IC2451 IC7107 IC2201 AUDIO CONTROL CONVERGENCE IC1004 EEPROM IC3001 TUNER1 IC3002 TUNER2 A/V SELECTOR MAIN A/V SELECTOR IC2505 IC4504 IC4513 IIC2 MAIN GC1 SUB GC1 DH-Board IC9901 IC9906 AMDP1+ D-Board IC601 IC602 Figure 63. IIC Connection - 35 - Service Manual...

  • Page 36: Description Of Connectors

    Description of Connectors LG2---D5 LG4---LB1 A51---R 210V 210V STB 3.3V RM_IN HEATER 6.3V OFF MUTE +20V +12V A1---D1 HEATER +18V S-ABL 140V +18V -18V 140V LG1---A15 -18V C_BTL 40V A12---CY_G AC ON/OFF P_BTL 40V GH-R STBY 7V GV-R A11---CY_R S-ABL +12V RH-R A2---D2...
  • Page 37 Description of Connectors (continued) A3---D3 V-PULSE H-PULSE SET +5V A6---G1 A4---D4 HHS DET +18V +18V -18V -18V DFCUT - 37 - Service Manual...

  • Page 38: Parts List

    REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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

    REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 42 REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 43 REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 44 REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 45 REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 46 REPLACEMENT PARTS LIST Models: PT-51HX41E/CE, PT-56HX41E/CE & PT-61HX41E/CE 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 ASSY, CENTER COVER...
  • Page 47 REPLACEMENT PARTS LIST DESCRIPTION OF ABBREVIATIONS GUIDE RESISTOR TYPE TOLERANCE Carbon +/- 1% Fuse +/- 5% Metal Oxide +/- 10% Solid +/- 20% Wire Wound +/- 2% RES, C 270-J-1/4 CAPACITOR TYPE TOLERANCE Ceramic +/- 0.25pF Electrolytic +/- 0.5pF Polyester +/- 1pF Styrol +/- 5%...

  • Page 48: Schematic Notes

    SCHEMATIC NOTES: 1. RESISTOR All resistors are carbon 1/4W resistor, unless otherwise noted by the following marks. Unit of resistance is ohm (Ω), (K=1,000, M=1,000,000) Non Flammable Solid Metal Oxide Metal (Precision and high stability) Wire Wound Thermistor Fusible Positive coefficient Thermistor Flame Proof Rectangular 2.

  • Page 49: D-Board Layout

    ALL MODELS D-Board Schematic, Left Portion - 50 -...

  • Page 50: D-Board Schematic (Left Portion)

    D-Board Schematic, Right Portion ALL MODELS - 51 -...

  • Page 51: D-Board Schematic (Right Portion)

    ALL MODELS A-Board Schematic, Left Portion - 52 -...

  • Page 52: A-Board Schematic (Left Portion)

    A-Board Schematic, Left Middle Portion ALL MODELS - 53 -...

  • Page 53: A-Board Schematic (Left Middle)

    ALL MODELS A-Board Schematic, Right Middle Portion - 54 -...

  • Page 54: A-Board Schematic (Right Middle)

    A- Board Schematic, Right Portion ALL MODELS - 55 -...
  • Page 55 ALL MODELS DH-Board Schematic - 56 -...

  • Page 56: Dh-Board Schematic

    K, G & R Board Schematics & Layouts ALL MODELS G-Board Schematic R-Board Schematiematic K-Board Schematic R-Board Layout K-Board Layout G-Board Layout - 57 -...
  • Page 57 ALL MODELS LR-Board Layout & Schematic LR-Board Voltage Measurements (Transistors) Q355 Q309 Q354 Q353 Q308 Q302 175.30 176.40 11.50 177.00 8.10 2.90 0.30 8.10 175.70 216.80 1.70 11.50 176.20 176.40 11.90 176.80 8.00 2.50 Q301 Q303 Q901 Q957 Q904 Q958 0.00 0.60 137.90...

  • Page 58: Lr-Board Schematic, Layout & Voltages

    LB-Board Schematic, Layout & Voltages ALL MODELS LB-Board Voltage Measurements (Transistors) Q395 Q370 Q393 Q394 Q367 Q361 173.00 174.10 174.40 11.90 8.10 7.90 0.30 8.20 216.90 173.10 2.50 0.00 174.00 174.00 174.20 11.50 8.20 8.10 Q364 Q362 Q961 Q959 Q964 Q960 6.80 7.50...

  • Page 59: Lb-Board Schematic, Layout & Voltages

    ALL MODELS LG-Board Schematic, Layout & Voltages LG-Board Voltage Measurements (IC & Transistors) Q331 Q334 Q375 Q338 Q374 Q373 2.89 8.14 175.90 175.20 11.90 176.50 11.51 1.43 8.20 0.30 175.20 216.80 2.47 8.00 175.90 175.80 11.50 176.00 IC880 Q956 Q941 Q955 Q935 Q936...
  • Page 60 Voltages ALL MODELS A-Board Voltage Measurements (IC’s) D-Board Voltage Measurements (IC & Transistors) IC2302 IC7001 IC7002 IC2302 IC701 IC602 IC603 ..-22.21 ..-20.95 ..0.00 ..0.00 .

  • Page 61: A & D-Board Voltages

    ALL MODELS WAVEFORMS D-Board A-Board 1.50KV p-p 14.0V p-p 68.8V p-p 36.0V p-p 4.00V p-p 5.36V p-p 6.56V p-p 6.72V p-p Q551-C Q551-B IC451 PIN 5 (V-OUT) IC451 PIN 3 A15 PIN 9 (VM OUT) A15 PIN 6 (GREEN OUT) A15 PIN 4 (RED OUT) A15 PIN 2 (BLUE OUT) 8.40V p-p...

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