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Konka KP2905QYT1 Service Manual
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Konka KP2905QYT1 Service Manual

Konka KP2905QYT1 Service Manual

Color television receiver kp2905qyt1
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SERVICE MANUAL
Color Television Receiver
Model:KP2905QYT1

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Summary of Contents for Konka KP2905QYT1

  • Page 1 SERVICE MANUAL Color Television Receiver Model:KP2905QYT1...

  • Page 2: Important Service Safety Information

    IMPORTANT SERVICE SAFETY INFORMATION Operating the receiver outside of its cabinet or with its back removed involves a shock hazard. Work on these models should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment. Exercise care when servicing this chassis with power applied.

  • Page 3: Alignment Procedures

    If available, measure current using an accurate leakage current tester. Any reading of 0.35mA or more is excessive and indicates a potential shock hazard which must be corrected before returning the receiver to owner. If a reliable leakage current tester is not available, this allernate method of measurement should be used.
  • Page 4 Factory menu 1. Press MENU button to display the menu, then press RECALL button five times continuously to enter factory service menu. Press MENU button to call up FACTORY1-6 after entering into the factory service menu. 2. Press PROG. ▲▼button to select the item (the selected item will turn into red), then use VOL+/VOL- button to adjust the parameter.
  • Page 5 2. Adjust focus potentiometer to obtain the best focus of the pattern. Horizontal scanning, vertical scanning and geometry correction adjustment Description: 3 sets of horizontal and vertical parameters need to adjust, including:Under TV/AV mode, PAL 100i，PAL 75i，NTSC 120I ； Receive five circles pattern signal, then enter into factory menu to call up FACTROY1.
  • Page 6 G-AV-ON Set TV/AV status when turn TV on FREQ XX （Check data and no adjustment needed） Grid voltage adjustment Enter into the menu firstly and set color to normal status (9300K). 1. Enter into factory menu, call up FACTORY5 and set the initial value as technics card shown: Settings: MAX BRIGHTNES BRIGHTNES...
  • Page 7 3. Set COLOR to COLD and adjust COLOR TEMPERATURE is 12000K. (X=0.272,Y=0.279) 4. Set COLOR to WARM and adjust COLOR TEMPERATURE is 6500K. (X=0.313,Y=0.329) Sub-brightness adjustment Enter FACTORY5 again, adjust MID BRIGHTNES XX (adjust within 30~38), when picture is normal status, the gray scale is eight panes and a half. Check sound effect parameters.
  • Page 8 X26LAN2 X26LAN3 X26LAN4 X26LAN5 X26LAN6 X26LAN7 Electron beam test Apply white signal, adjust brightness and contrast to the maximum value, voltage at two ends of test resistor R415 (100 ohm) should be measured below 0.22V (Beijing Matsushita CRT). HF AGC adjustment 1.
  • Page 11 R006 +12V-1 R108 R1121K L105 R007 L106 R116 R008 330 VPROT RESETBE RESET V106 R114 R113 BC858 R009 C028 R111 100n C10847n D111 D114 C106 1N4148 +3V3 R107 R115 +3V3 R109 D113 R110 D112 C109 1N4148 470p 1N4148 +3V3 R117 C104 R118 C107...
  • Page 14 LAMP BOARD KEY BOARD Xp603 Xs603 DEGAUSSING COIL Xp602 Xs230 Xs901 XSX01 Xs601 Xs902 Xs801 Xs220 Xs202 Xs410 XP801B TO CRT DEFLECTION COIL Xs401 Xs403 F.B.P Xs803 TUNER Xs802 XP813A Xs502 Xp501 SCART BOARD CRT BOARD...