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akira CT-25TW9AN Service Manual

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Summary of Contents for akira CT-25TW9AN

  • Page 2 CHASSIS: 5P60 MODEL: CT-25TW9AN Model No: CT-25TW9AN Version 1.0...

  • Page 3: Table Of Contents

    TECHNICAL SPECIFICATION ......................5 GENERAL SPECIFICATION ......................... 6 CHASSIS BLOCK DIAGRAM ....................... 7 CHASSIS WIRING DIAGRAM......................17 PBC BOARD ............................18 SERVICE ADJUSTMENT ........................21 MECHANICAL DISASSEMBLY......................30 SCHEMATIC DIAGRAM ........................32 THROUBLE SHOOTING CHART ....................... 34 Model No: CT-25TW9AN Version 1.0...

  • Page 4: Safety Notice

    It is particularly recommended that only parts designed on the parts list in this manual be used for component replacement designated by mark !. No deviations from resistance wattage or voltage ratings may be made for replacement items designated by mark !. Model No: CT-25TW9AN Version 1.0...

  • Page 5: Technical Specification

    Auto Search/Store/Shut-Off • Full function Remote Control • 8W X 2 Speakers • 746 (W) x 483 (D) x 519 (H) mm • Weight: 38Kg • Options: DVD-Component Input Fastext NICAM/German Stereo Wide Power Supply Model No: CT-25TW9AN Version 1.0...

  • Page 6: General Specification

    >5W (1KHz, 0.5v INPUT, 10% THD) SAFETY AUTHENTICATION STANDARD CB/ CE LED INDICATOR POWER ON HAND SET TYPE HS08 HS09 HAND SET POWER SUPPLY BATTERY 3V UM-3/R6/AA x2 COLOUR PICTURE TUBE 25” – 38” 110 DEGREE TUBE REMOTE CONTROL DISTANCE Model No: CT-25TW9AN Version 1.0...

  • Page 7: Chassis Block Diagram

    CHASSIS BLOCK DIAGRAM Model No: CT-25TW9AN Version 1.0...
  • Page 8 IC 401 (UNIVERSAL HI-FI AUDIO PROCESSOR) TDA9859H IC605. IC606 <REGULATORS> L7800 SERIES REFERENCE VOLTAGE INPUT SERIES OUTPUT PASS ELEMENT CURRENT GENERATOR PROTECTION ERROR REFERENCE STARTING AMPLIFIER VOLTAGE CIRCUIT THERRMAL PROTECTION Model No: CT-25TW9AN Version 1.0...
  • Page 9 IC 402 (SRS TRUBASS) NJM2192 AM Model No: CT-25TW9AN Version 1.0...
  • Page 10 IC 401 (AV SWITCH W/IIC BUS CONTROL) M52797SP Model No: CT-25TW9AN Version 1.0...
  • Page 11 IC 101 (SYSTEM TV SIGNAL PROCESSOR-TELETEXT) TDA93XXPS/N2/5I Model No: CT-25TW9AN Version 1.0...
  • Page 12 IC 103 (DIGITAL TV SOUND DEMODULATOR / DECODER) TDA9874AH Model No: CT-25TW9AN Version 1.0...
  • Page 13 IC 302 (VERTICAL DEFLECTION BOOSTER) (TDA4863AJ) IC 404(BTL AUDIO AMPLIFIER)(TDA8944J) Model No: CT-25TW9AN Version 1.0...
  • Page 14 IC 803(MULTISTANDARD COMB FILTE) (TDA9181T) IC 802(HEF4052) Model No: CT-25TW9AN Version 1.0...
  • Page 15 IC 601 <PHOTO TRANSISTOR> TLP621 TLP621 1:ANODE 2:CATHODE 3:EMITTER 4:COLLECTOT IC 604 <POWER SWITCH> KA5Q12XXRF Model No: CT-25TW9AN Version 1.0...
  • Page 16 Transistor Mark N P N N P N P N P N P N P N P P N P N P N N P N N P N P N P P N P N P N P N P C5148 I N P U T I N P U T...

  • Page 17: Chassis Wiring Diagram

    CN401B FROM Cn805 CN 803 +H403 TO CN 704 CN 802 FOCUS CN 701 CN 801A TO CN 703 SCREEN H502 FROM CN 302 CN401A CN 301 H501 CN 602 CN 601 FROM CN 203 Model No: CT-25TW9AN Version 1.0...

  • Page 18: Pbc Board

    PBC BOARD Model No: CT-25TW9AN Version 1.0...
  • Page 19 CAM350 PRO V 6.0 : Wed Jan 15 10:17:54 2003 - (Untitled) Model No: CT-25TW9AN Version 1.0...
  • Page 20 SIDE FRONT AV & AV PCB TOP LAYER CONTROL PCB TOP LAYER 5800-D25TMY-01 Model No: CT-25TW9AN Version 1.0...

  • Page 21: Service Adjustment

    Power adjustment Connect a 100W bulb cross C616. Then connect AC 220V power to CN601. If the bulb light, the voltage is prescriptive, and there is no unconventionality, then the power is OK, else be repaired. Model No: CT-25TW9AN Version 1.0...
  • Page 22 Adjust 5RGH to obtain picture’s vertical center at the center of CRT screen in factory mode. (OPTION). vii. Receive 60HZ RGB or YUV cross hatch pattern. Set TV standard status. Adjust 6RGH to obtain picture’s vertical center at the center of CRT screen in factory. (OPTION). Model No: CT-25TW9AN Version 1.0...
  • Page 23 Set BRIGHTNESS and CONTRAST at normal status, receive GREY SCAL and entering factory mode press KEY 3, set WPR at 31, adjust WPG and WPR to obtain white balance. Model No: CT-25TW9AN Version 1.0...
  • Page 24 “BUSY” disappeared, then POWER OFF and ON by main power E2PROM initialization in completed. iii. Setting the data in E2PROM. When in manufacturing, first you read the data from an good E2PROM 24C08, then WRITE to other E2PROM 24C08. Model No: CT-25TW9AN Version 1.0...
  • Page 25 Service items This appendix shows information about service items that are available. The table list all possible available service items with its. Model No: CT-25TW9AN Version 1.0...
  • Page 26 Model No: CT-25TW9AN Version 1.0...
  • Page 27 Model No: CT-25TW9AN Version 1.0...
  • Page 28 Model No: CT-25TW9AN Version 1.0...
  • Page 29 (R, B) static convergence magnets. Align Red/Blue with green dots at the center of the screen by rotating (RB-G) static convergence magnet. Remove the DY wedges and slightly tilt the deflection yoke horizontally and vertically to obtain the good. Model No: CT-25TW9AN Version 1.0...

  • Page 30: Mechanical Disassembly

    Disconnect Degaussing coil socket (KE), picture tube socket, Deflection yoke connector (KDY), speaker connectors (KL and KR) and 2 anode lead. Remove chassis completely by sliding it straight back. DEGAUSSING COIL DEGAUSSING COIL HOLDER PICTURE TUBE GROUNDING LEAD To CRT Unit DEGAUSSING ground COIL SOCKET Model No: CT-25TW9AN Version 1.0...
  • Page 31 Install a replacement picture tube in reverse order. Properly install the degaussing coil and picture tube grounding lead on the picture tube. See Figure 2. Note: If picture tube is being replaced, mount the Degaussing Coil on the picture tube. See following… Model No: CT-25TW9AN Version 1.0...

  • Page 32: Schematic Diagram

    5P60 SCHEMATIC DIAGRAM CN003 M001 5.6K 3.3K 2.7K 1.5K 1.2K CON5 (38K) RR1 100 10u/16V RD11 LED001 R536 TUNER R538 XG6VS96A D503 SAW102 R144 C139 Q532 BA157 4.7K K9362M 100uF C160 5.0V 24C08 R531 BF420 R136 Q531 TUNER 10nF IC102 n.c.

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