Panasonic CT-32SX12F Service Manual
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Panasonic CT-32SX12F Service Manual

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Service Manual

This Service manual is issued as a service guide for the models of the NA9FL family 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" in this main manual.
Models
CT-32SX12F
CT-32SX12UF
CT-32SX12CF
CT-36SX12F
CT-36SX12UF
CT-36SX12CF
Copyright 2002 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
®
ORDER NO. MTNC020721C1
B5
Color Television
Main Manual
(NA9FL)
Panasonic
Chassis
AP381
AP381
AP381
AP382
AP382
AP382

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Summary of Contents for Panasonic CT-32SX12F

  • Page 1: Service Manual

    ORDER NO. MTNC020721C1 Service Manual Color Television Main Manual (NA9FL) Panasonic Models Chassis CT-32SX12F AP381 CT-32SX12UF AP381 CT-32SX12CF AP381 CT-36SX12F AP382 CT-36SX12UF AP382 CT-36SX12CF AP382 This Service manual is issued as a service guide for the models of the NA9FL family 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: 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 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+Ag+Cu). That is Tin (Sn), Silver (Ag) and (Cu) although other types are available.

  • Page 4: Table Of Contents

    Important safety notice ....2 To check purity ....21 Instructional flow chart for service mode 22 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: Horizontal Oscillator Disable Circuit

    Service notes (continued) IMPORTANT: To protect against possible damage to Preparation the solid state devices due to arcing or static discharge, 1. Connect receiver to AC 120 Volts. Do not turn ON. make certain that all ground wires are securely 2.

  • Page 7: Receiver Feature Table

    Receiver feature table FEATURE\MODEL CT-32SX12F/UF/CF CT-36SX12F/UF/CF Chassis NA9FL Number of channels Menu language Eng/Span/Fr Closed Caption V-Chip (USA/CANADA) Remote model number EUR7613Z10 Picture tube MDDA Comb filter ADV 3 DIG (NEW) X (DIGITAL) V/A norm (X=BOTH) Color temp Preset/input labeling...

  • Page 8: Board Description Table

    Board description table BOARD CT-32SX12F/UF/CF CT-36SX12F/UF/CF Description A-Board TNP2AH037 MAIN CHASSIS KEY BOARD, G-Board TNP2AA113 FRONT A/V L-Board TNPA1673 CRT BOARD D-Board TNP2AH041 POWER SUPPLY * Note: When ordering a replacement board assembly, append an “S” to the board number.

  • Page 9: Location Of Controls (Receiver)

    Location of controls (receiver) Front A/V jacks VOLUME CHANNEL ACTION TV/VIDEO POWER Controls inside Remote control sensor front door Figure 3. Location of controls (receiver). Quick reference control operation Power button - Press to turn ON or OFF. Volume buttons - Press to adjust sound level, or to adjust audio menus, video menus, and select operating features when menus are displayed Channel buttons - Press to select programmed channels.

  • Page 10: Location Of Controls (Remote)

    Location of controls (remote) POWER button Press to turn ON and OFF. MUTE button Press to mute sound. A second press resumes sound. TV, VCR, DBS/CBL, DVD Press to select remote operation VOL (volume) buttons Press to adjust TV sound level. Use with channel buttons to navigate in menus.

  • Page 11: Disassembly For Service

    Disassembly for service Back cover To release screen GND cables from L-Board L11 & L12 connectors, insert a wire in both sides of connector and Remove all the screws marked with an arrow( pull upwards the cable, then remove the wire from the back of the receiver.
  • Page 12 Disassembly for service (continued) Note: To remove the four brackets holding the degauss coil from the corners of Note: Reuse all the clampers and mounting the CRT, first remove the CRT from brackets from the degaussing coil and the cabinet, then remove the brackets screen, and when remounting the by pressing the tab on the bracket and degaussing coil assure that is not...

  • Page 13: Back Cover Removal

    Back cover removal 4 screws at top edge 1 screw 1 screw at lower 1 screw 1 screw at lower right corner 1 screw 1 screw left corner Figure 8. Back cover removal - 13 -...

  • Page 14: 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 heat sink when the HOT ground symbol ( ) is used.

  • Page 15: Purity And Convergence Procedure

    Purity and convergence procedure Vertical raster shift adjustment Adjustment is necessary only if the CRT or the deflection yoke is replaced or if the setting was (only for models with purity/convergence assembly disturbed. The complete procedure consists of: with 4 pairs of rings). 1.

  • Page 16: Initial Center Static Convergence

    Initial center static convergence Final convergence procedure Connect a dot/cross hatch generator to the receiver (see Fig. 17 through Fig. 19): and tune in a signal. Observe misconvergence at Note: Vertical size and focus adjustments must be center of the screen only. completed prior to performing the convergence Adjust the R&B pole magnets;...

  • Page 17: Yh Adjustment

    Adjustment Permalloy convergence corrector strip (VR2 for vertical dynamic convergence) (part No. 0FMK014ZZ) 1. Apply a crosshatch pattern. 2. Adjust contrast and brightness customer controls This strip is used in some sets to match the yoke and CRT for optimum convergence. If the yoke or CRT is to obtain a correct picture.
  • Page 18 As the yoke is tilted vertically, the rasters produced outside guns rotate in opposite directions. Figure 17. Vertical yoke movement Raster produced from one of the outside electron beams Raster from the other side electron beam R G B Static convergence magnets are set for center convergence As the yoke is tilted horizontally, one raster gets larger while the other gets...

  • Page 19: Service Mode (Electronic Controls)

    Service mode (electronic controls) This receiver has electronic technology using the I²C MTSIN SEPAL SEPAH bus concept. It performs as a control function and it CLOCK CLOCK HHSTH replaces many mechanical controls. Instead of VIDEO COLOR TINT BRIGH CONT B-Y_G CUT_G CUT_R CUT_B adjusting mechanical controls individually, many of the R-DR B-DR...
  • Page 20 Service mode (electronic controls, continued) MTS Adjustments Description Default Level New Level MTSIN INPUT LEVEL SEPAL LOW LEVEL SEPARATION SEPAH HIGH LEVEL SEPARATION CLOCK Adjustments Description Default Level New Level CLOCK CLOCK HHSTH ------- VIDEO Adjustments Description Default Level New Level COLOR COLOR 01 6D...

  • Page 21: To Check Purity

    Service mode (electronic controls, continued) VDEF Adjustment Description Default Level New Level V RAS VERTICAL POSITION VEAMP VERTICAL SIZE VERTICAL LINEARITY VERTICAL S CORRECTION DAF Adjustments Description Default Level New Level HDAFP HORIZONTAL DAF PHASE 00 D0 HDAFW VERTICAL DAF GAIN VPOS VPOS CTEMP Adjustments...

  • Page 22: Instructional Flow Chart For Service Mode

    Instructional flow chart for service mode NORMAL MODE ENTRY TO SERVICE MODE AGING MODE • Select CABLE mode. • Press VOL UP and ACTION simultaneously on TV • Set SLEEP time for 30 Min. • Yellow “CHK” appears in upper left corner of screen. •...
  • Page 23 Instructional flow chart for service mode - (continued) ON REMOTE CONTROL TO (previous/next adjustment ON REMOTE TO VOL VOL to make adjustment Press POWER or ACTION on remote to POWER exit the adjustment. (ON REMOTE) IMPORTANT NOTE: Always verify that TV is out from service mode.

  • Page 24: Service Adjustments (Electronic Controls)

    Service adjustments (electronic controls) Sub-Contrast adjustment Tint/Color adjustment Service DAC Adjustment (BRIGH, CONT) Service DAC adjustment (TINT) (COLOR) This adjustment is factory set. Do not adjust unless Preparation: repairs are made to associated circuit, the CRT Board 1. Apply a rainbow color bar signal. or when the CRT is replaced.

  • Page 25: Tint/Color Adjustment

    Tint/Color adjustment Procedure: Service DAC adjustment (TINT) (COLOR) Preset the following service DACs for best results: • CUT_R..02 00 Note: Color, tint adjustment sets reference settings user • CUT_G ..02 00 controls;...

  • Page 26: Horizontal Centering (H-Pos)

    Service adjustments (electronic controls, cont.) Horizontal centering (H-POS) Parallelogram adjustment (R524) This adjustment helps to center the picture horizontally R524 is a variable resistor located on D-Board by Preparation: connector D6 Apply a pattern that permits the centering of the Preparation: image.

  • Page 27: Vertical Linearity Adjustment (V-C)

    Vertical linearity adjustment (V-C) PCC adjustment (PCC) This adjustmet helps to correct left and right curved Preparation: sides of picture. 1. Apply a crosshatch pattern Preparation: Procedure: 1. Apply a crosshatch pattern 1. Confirm that vertical picture is centered, or adjust 2.

  • Page 28: Mts Circuit Adjustments

    Service adjustments (electronic controls, cont.) MTS circuit adjustments Audio: 300Hz, 100% modulation, stereo (left only) (70 ±5dB, 75Ω OPEN, P/S 10dB). The MTS circuit adjustments require two steps: 3. Adjust the MTS low-level separation adjustment 1. Input level adjustment. “SEPAL” until the amplitude displayed on the scope is minimum.

  • Page 29: Audio Signal Path Block Diagram

    Audio signal path block diagram Figure 40. Audio signal path block diagram. - 29 -...

  • Page 30: Video Signal Path Block Diagram

    Video signal path block diagram Figure 41. Video signal path block diagram. - 30 -...

  • Page 31: Description Of Connectors

    Description of connectors A15--DY D6--A6 G2--A2 EHT V N.C. H DAF SDA1 SCL1 V RAMP H DRIVE LANDING H GND HP MUTE A16--A17 SIGNAL GND TILT UNREG -15V UNREG -15V UNREG 15V UNREG 15V D2--A8 SIGNAL GND G3--A3 UNREG 11V UNREG 11V D3--L11 D7--A7...
  • Page 32 Description of connectors L1--A14 12 V L2--VM COIL VM COIL N.C. VM COIL L3--D1 140 V N.C. 210 V N.C. HEATER N.C. H-GND CRT GND DEG--DEG COIL DEG 1 N.C. DEG2 TILT COIL LANDING COIL TP1--BUS CON STNBY +B SCL1 SDA1 SCL2 SDA2...

  • Page 33: Component Identification

    Component identification CRT (Secured by 4 screws) Anode (high voltage) Deflection yoke Degaussing coil Speaker Speaker T551 Flyback Tuner A/V jacks S-VHS input Figure 42. Rear view - 33 -...
  • Page 34 Component identification IC451 IC882 IC881 IC002 TUNER IC2301 Figure 43. A-board IC4807 IC4805 IC4804 FRONT A/V Figure 44. G-Board - 34 -...
  • Page 35 Component identification IC801 Q551 Q801 R801 FUSE T801 FLY-BACK Q751 T1551 Figure 45. D-Board CRT SOCKET IC3801 Figure 46. L-Board - 35 -...

  • Page 36: Parts List

    REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 37 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 38 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 39 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 40 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 41 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 42 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 43 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 44 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 45 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 46 REPLACEMENT PARTS LIST Models: CT-32SX12F, CT-32SX12CF, CT-32SX12UF, CT-36SX12F, CT-36SX12CF, CT-36SX12UF. 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. PART NO. DESCRIPTION PART NO.
  • Page 47 Description of abbreviations guide RESISTOR CAPACITOR TYPE TOLERANCE TYPE TOLERANCE Carbon ± 1% Ceramic ± 0.25pF Fuse ± 5% Electrolytic ± 0.5pF Metal Oxide ± 10% Polyester ± 1pF Solid ± 20% Styrol ± 5% Wire Wound ± 2% Tantalum ±...
  • Page 48 Notes: IMPORTANT SAFETY NOTICE CHIP TRANSISTOR THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL LEAD DESIGNATION FEATURES THAT ARE IMPORTANT FOR PROTECTION FROM X-RADIATION, FIRE AND ELECTRICAL SHOCK HAZARDS. WHEN SERVICING ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS DESIGNATED WITH A IN THE SCHEMATIC.
  • Page 49 Notas NOTA DE SEGURIDAD DIAGRAMAS ELÉCTRICOS INCLUYEN CARACTERÍSTICAS ESPECIALES MUY IMPORTANTES IDENTIFICACIÓN DE TERMINALES PARA TRANSISTORES EN CHIP PARA PROTECCIÓN CONTRA RAYOS-X, QUEMADURAS Y DESCARGAS ELÉCTRICAS. CUANDO SERVICIO IMPORTANTE USAR PARA REEMPLAZO COMPONENTES CRITICOS, SOLO PARTES ESPECIFICADAS POR EL FABRICANTES. LOS COMPONENTES CRITICOS ESTAN SEÑALADOS EN LOS DIAGRAMAS POR EL SIMBOLO NOTAS DE LOS DIAGRAMAS...

  • Page 50: A-Board Schematic

    A-Board - 50 -...
  • Page 51 TABLE OF DIFFEREN TNP2AH037AC TNP2AH0 C574 ECA1HM470B C575 ECQV1H334JL3 D561 MA2C165001VT D562 MA2C165001VT IC511 AN6914S-E1 Q563 2SC3941RTA ERJ6GEY R462 ERJ6GEYJ243V R590 ERJ6GEYJ472V R591 ERJ6GEYJ332V R596 ERDS2TJ102T R597 ERJ6GEYJ103V R598 ERJ6GEY0R00V A-Board - 51 -...
  • Page 52 ERENCES NP2AH037AC ERJ6GEYJ183V A-Board - 52 -...
  • Page 53 A-Board - 53 -...
  • Page 54 Integrated circuits voltages A-BOARD TNP2AH037 IC510 IC001 IC002 ..0.00 ..0.00 ..2.45 ..0.00 ..0.00 .

  • Page 55: A-Board Voltages

    Integrated circuits voltages A-BOARD TNP2AH037 IC3001 IC2451 IC2701 IC2301 IC2201 ..0.00 ..4.52 ..0.19 ..0.00 ..0.00 .

  • Page 56: D-Board Schematic

    D-Board - 56 -...
  • Page 57 D-Board - 57 -...
  • Page 58 D-Board - 58 -...

  • Page 59: D-Board Voltages

    D-BOARD TNP2AH041 IC801 IC802 ..1.46 . . . 139.00 ..0.37 ..11.34 ..0.17 ..0.00 ..0.00 .

  • Page 60: A-Board Waveforms

    A-Board 7.93MHz 0.34V p-p X’TAL 1.00V p-p IC101 PIN 41 IC101 PIN 50 IC001 PIN 17 (R_OUT) (Main Video) 3.04V p-p 0.40V p-p 0.35V p-p IC101 PIN 36 IC101 PIN 45 (B_OUT) IC101 PIN 42 (G_OUT) (FBP IN) 1.58V p-p 54.4 Vp-p 1.56V p-p IC101 PIN 26...
  • Page 61 notes: - 61 - NOTES...

  • Page 62: G-Board Schematic

    G-Board - 62 -...
  • Page 63 G-Board - 63 -...
  • Page 64 G-Board - 64 -...

  • Page 65: G-L-Board Voltages

    G-BOARD TNP2AA113 IC4804 IC4805 IC4807 Q4901 ..2.56 ..4.33 ..5.68 4.35 ..2.56 ..0.00 ..5.68 5.08 .

  • Page 66: L-Board Schematic

    L-Board - 66 -...
  • Page 67 L-Board - 67 -...

  • Page 68: A-Board Pcb

    A-PCB - 68 -...
  • Page 69 A-PCB - 69 -...

  • Page 70: D-Board Pcb

    D-PCB - 70 -...
  • Page 71 D-PCB - 71 -...

  • Page 72: G-Board Pcb

    G-PCB - 72 -...
  • Page 73 G-PCB - 73 -...

  • Page 74: L-Board Pcb

    L-PCB - 74 -...
  • Page 75 notes: - 75 - NOTES...
  • Page 76 ® Printed in USA K02072127PL0717...

This manual is also suitable for:

Ct-32sx12ufCt-32sx12cfCt-36sx12fCt-36sx12ufCt-36sx12cf

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