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akira CT-14CAS5CP Service Manual

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Summary of Contents for akira CT-14CAS5CP

  • Page 1 Color TV...
  • Page 2 Model: Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 3: Table Of Contents

    STRUCTION BLOCK DIAGRAM......................... 20 SERVICE DATA ..........................22 TECHNICAL DATA OF KEY ICs ......................... 22 SERVICE DATA OF KEY ICs ..........................43 APPENDIX ............................47 CIRCUIT DIAGRAM PARTS LIST Please read this manual carefully before service. Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 4: Safety Instructions And Maintenance

    4. Service and adjustment of the TV may result in changes in the nominal EHT voltage of the CRT anode. So ensure that the maximum EHT voltage does not exceed the rated value after service and adjustment. Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 5: Safety Precaution

    When replacing safety components identified by the international hazard symbols on the circuit diagram and parts list, it must be the company-approved type and must be mounted as the original. 8. Keep wires away from high temperature components. Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 6: Product Safety Notice

    TV near any heat sources such as radiators, heat registers, stove, or other apparatus that produce heat. 6. Service personnel should observe the SAFETY INSTRUCTIONS in this manual during use and servicing of this TV set. Otherwise, the resulted damage is not protected by the manufacturer. Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 7: Safety Symbol Description

    SAFETY SYMBOL DESCRIPTION Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 8: Maintenance

    6. Unplug the TV set from the wall outlet before cleaning or polishing it. Use a dry soft cloth for cleaning the exterior of the TV set or CRT screen. Do not use liquid cleaners or aerosol cleaners. Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 9: Mechanica Disassembling

    (picture tube grounding lead). 3. Disconnect Degaussing coil socket (KE). Picture tube socket, Deflection yoke connector (KDY). Speaker connectors (KL and KR), and 2 anode lead. 4. Remove chassis completely by sliding it straight back. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 10 5. Properly install the degaussing coil and picture tube grounding lead on the picture tube. SeeFigure2. Note: If the Picture Tube is being replaced, mount the Degaussing Coi l on the picture tube. See following Figure1.Cabinet Back Removal Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 11: Adjustments

    1.9 Slowly move the deflection yoke assembly forward or backward until a uniform green screen is obtained. 1.10 Tighten the clamp screw of the assembly temporarily. Check purity of the red raster and blue raster until purities of the three rasters meet the requirement. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 12 2.2.6 Detach the temporarily mounted wedge and put it in either upper space. Fasten the deflection yoke assembly on the picture tube. 2.2.7 After fastening the three wedges, recheck overall convergence and ensure to get optimal convergence. Tighten the lamp screw holding the deflection yoke assembly. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 13 Generally, white balance adjustment is made with professional equipment. It’s not practical to get good white balance only through manual adjustment. For TVs with I C bus control, change ² the bus data to adjust white balance. Fig. 2 Fig.3 Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 14: Circuit Adjustments

    It’s impossible to check the power part separately from the main chassis board as the part is mounted on the main chassis board. The power components, etc. should be checked for burnout when power-on. If burned out, do not power on the TV again until the cause is found out. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 15 Measure resistance between naked metal of the TV and feed end of the power cord to be infinity with a DC-500 high resistance meter and insulation resistance between the naked metal and degaussing coil to be over 200mΩ Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 16 As the control data have dramatic effects on functions and performance of the TV, service personnel should not tell user how to enter the SERVICE mode to avoid improper data settings. 6.2 Adjustment bus data (GDET0101-07) Table 3 Function Description for Bus Data Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 17 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 18 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 19 Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 20: Structure And Chassis Function Description

    STRUCTURE and CHASSIS FUNCTION DESCRIPTION 1. BLOCK DIAGRAM Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 21 ● AV stereo ● C bus control ● Electronic program table ● Intelligent lock ● Biorhythm ● Calendar inquiry ● The chassis mainly uses the following ICs and assemblies. Table 5 - Key ICs and Assemblies Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 22: Service Data

    PIF, SIF, Video, multi-standard chroma, Sync, RGB processors. Mask ROM: TMPA8873CMANG (ROM size: 32k) Mask ROM: TMPA8873CPANG (ROM size: 48k) Mask ROM: TMPA8873CRANG (ROM size: 56k) Mask ROM: TMPA8873CSANG (ROM size: 64k) OTP ROM: TMPA8873PSANG (ROM size: 64k) Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 23 2. FEATURE Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 24 3. BLOCK DIAGRAM Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 25 While RESET of MCU is active, the MCU function stops. Hardware and software initialization sequence including power supplies control is required, because status of any hardware after the RESET period is unknown especially horizontal oscillator which is a very basic timing generator of SP operation. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 26 5. TERMINAL INTERFACE Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 27 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 28 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 29 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 30 SIGNAL PROCESSOR BLOCK Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 31 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 32 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 33 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 34 Microcontrollers Descriptions (MROM version: TMPA8873CMANG / CPANG / CRANG /CSANG) Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 35 Outputs short-circuit protected to ground, supply and across the load ■ Thermally protected ■ Pin compatible with the TFA9843AJ, TFA9843(B)J, TFA9842(B)J, TFA9841J. ■ 3. Applications CRT TV, LCD TV ■ Monitors ■ PC speakers ■ Boom box ■ Mini and micro audio receivers. ■ Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 36 3. Block Diagram Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 37 4.2 Pin Description Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 38 LA78040/LA78041 (N602) Vertical Deflection Output Circuit 1) Features Low power dissipation due to built-in pump-up circuit Vertical output circuit Thermal protection circuit built in Excellent crossover characteristics DC coupling possible 2) Block Diagram Fig. 13 Block Diagram Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 39 8-pin PDIP, 8-lead JEDEC SOIC, 8-lead MAP and 8-lead TSSOP packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 5.5V) versions. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 40 The Write Protect pin allows normal read/write operations when connected to ground (GND). When the Write Protect pin is connected to Vcc, the write protection feature is enabled and operates as shown in table 14. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 41 AT24C16, 16K SERIAL EEPROM: Internally organized with 128 pages of 16 bytes each, the 16K requires an 11-bit data word address for random word addressing. 6 ) Block Diagram Fig. 16 7) Refer to Table 21 about Functions and Data of the IC’s Pins. Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 42 STR-G5600. Pin configuration, function and threshold of STR-G8600 are compatible with those of STR-G5600. 2) Block Diagram 3) Function of Terminal Table 15 4) Refer to table 22 about Functions and Data of the IC’s Pins Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 43: Service Data Of Key Ics

    SERVICE DATA OF KEY ICs Table 16 Ground Resistance of TMPA8873 Pins Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 44 Table 17 Operating Voltage of TMPA8873(N202)’s Pins Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 45 Table 18 Functions and Service Data TFA9842J’s Pins Table 20 Functions and Service Data LA78040’s Pins Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 46 Table 21 Functions and Service Data of AT24C08 / 16 Pins Table 22 Functions and Service Data of STR-G5653’S Pins Model no.:CT-14CAS5CP.doc version 1.0...

  • Page 47: Appendix

    APPENDIX Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 49 VD801 VD802 VD804 VD805 62118150Y16 AUDION 3DG1815-Y V803 62126880030 AUDION 3DA2688-L V805 62126880030 AUDION 2SC2688-L 64408800Y10 AUDION 3DD880/3DD880A V804 64408800Y10 AUDION 2SD880-Y 8475700010B LINE FILTER LCL-F15(JUB4.757.001) L802 8472607070B SW TRANS. BCK-23519L(JUB4.726.485) T801 50060010190 SW TRANS. BCK-35-0318 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 50 RT13-0.166W-220ΩJ 51113221JU0 CARBON RES. R228 51113331JU0 CARBON RES. RT13-0.166W-330ΩJ R216 RT13-0.166W-1KΩJ 51113102JU0 CARBON RES. R202 R206 R210 RT13-0.166W-3.3KΩJ 51113332JU0 CARBON RES. R225 R229 51113472JU0 CARBON RES. RT13-0.166W-4.7KΩJ R203 R212 R211 RT13-0.166W-8.2KΩJ 51113822JU0 CARBON RES. R215 R220 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 51 RT13-0.166W-10KΩJ 51113103J40 CARBON RES. R301 50620101830 M. OXIDE FILM RES. RY21-2W-2.2ΩJ R305 RY21-2W-1KΩJ 50620101780 M. OXIDE FILM RES. R313 RY21-3W-4.7KΩJ 50620102070 M. OXIDE FILM RES. R446 51224111483 FUSE RES. RF10-2W-1.2ΩJ RF481 5248K722HB0 POLYPROPYLENE CAP. CBB81-1.6KV-7200PFH C435 Model no.:CT-14CAS5CP.doc version 1.0...
  • Page 52 CARBON RES. RP11 RT13-0.166W-1KΩJ 51113102JU0 CARBON RES. RP12 RT13-0.166W-33KΩJ 51113333JU0 CARBON RES. RP13 CD11C-16V-47μFM 52643470M10 ELECTROLYTIC CAP. CP11 61512050R15 DIODE FG5RD-1 VDP11A 67109138025 AT138A NP11A 67109138045 HRM380017 The data are subject to change without prior notice. Model no.:CT-14CAS5CP.doc version 1.0...

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