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akira CT-25XG9 Series Service Manual

Chassis: 5n11
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Summary of Contents for akira CT-25XG9 Series

  • Page 2 CHASSIS: 5N11 MODEL: CT-25XG9A CT-25XG9AN Model No: CT-25XG9A_25XG9AN Version 1.0...

  • Page 3: Table Of Contents

    CONTENTS 1. SPECIFICATIONS …………….…………………………………………… 4 2. X- RAY RADIATION PRECAUTION …………………..………………… 5 3. SAFETY PRECAUTION ………………………………………………..…… 5 4. PRODUCT SAFETY NOTICE …………………………………………….. 5 5. ALIGNMENT INSTRUCTION ………………………………………………. 6 6. SCHEMATIC DIAGRAM ……………………………………………………. 14 Model No: CT-25XG9A_25XG9AN Version 1.0...

  • Page 4: Specifications

    SPECIFICATIONS RECEIVING SYSTEM Sound System : A = BG/DK/I/M, R, N = BG/DK/I, CP = BG Colour System : A = PAL/SECAM/NTSC/NTSC P/B R.N = PAL/SECAM/NTSC P/B CP = PAL/NTSC P/B Picture Tube : 64 cm (25”) diagonal Ext. Antenna : 75 Ohm Coaxial Cable Ext.

  • Page 5: X-Ray Radiation Precaution

    CAUTION Before serving the chassis, read the “X-Ray Radiation Precaution”, “Safety Precaution” and “Product Safety Notice” on this page. X-RAY RADIATION PRECAUTION Excessive high voltage can produce potentially hazardous X-Ray Radiation. To avoid such hazards, the high voltage must not be above the specified limit. The normal value of the high voltage of this receiver is 24KV at zero beam current (minimum brightness) under 220V AC power source.

  • Page 6: Alignment Instruction

    PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety –related characteristics. These characteristics are often passed unnoticed by a visual inspection and the X-Ray Radiation protection afforded by them cannot necessarily be obtained by using replacement components rated for high wattage, etc.
  • Page 7 2.3.4. Select 'H' POSITION by pressing 'PROG+' key and 'PROG-' key. Press 'VOL+' key and 'VOL-' key to adjust the horizontal center of the pattern at the center of CRT screen. 2.3.5. Exit system parameter adjustment menu by pressing 'factory' key twin. 2.4.
  • Page 8 TV receiver can be sent to warm up line. b. Before exit warm up line, press 'factory' key three times continue, at this time exit warm up mode, there is no signal and the LOGO ‘AKIRA’ pattern will appear. NOTES: 1.
  • Page 9 6. Two different initializing a) Fully initialize: initialize the EEPROM's most work data and preset default value. In- cluding: work parameter of NN5199, horizontal and vertical parameter, OPTION parameter (via. function set parameter), picture mode parameter, volume mode parameter and white balance parameter.
  • Page 10 OPTION 1 (Sopdata1)(number 1 and 2) x x x x |x x x x ---> Sharp Peak frequency 3/4Mhz (0/1) (For NN5198) | | | | | | +------> Super Woofer sound setting ON/OFF | | | | | +--------> RGB limit ON/OFF | | | | +---------->...
  • Page 11 OPTION 5 (Dwork3 )(number 9 and A) x x x x |x x x x ---> ISUD0 | | | | | | +------> ISUD1 | | | | | +--------> PAL_M/N ON/OFF | | | | +----------> Reserved for internal using, must be zero | | | +------------>...
  • Page 12 Purity Magnet RB-G Magnet Clamper Static Magnet (FIG.1) (IV) FINAL INSPECTION AND ELECTRICAL FUNCTIONAL CHECK 1. CHECKING THE ELECTRICAL FUNCTION:- Connect the power cord and connect the signal to RF input. Check the power supply whether OK or not. Switch on the TV set and the LED is on. Switch off the TV screen and should not have CRT spot within 3 sec.
  • Page 13 2. RELIABILITY AGING TEST:- 1. 1 lot of production sets. Sampling 20 sets for aging 7 days continues test with colour signal in. Normal production sets must be age for 1 day. 3. MECHANICAL INSPECTION:- 1. Inspect all glue are firmly placed. 2.

  • Page 14: Schematic Diagram

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Ct-25xg9aCt-25xg9an