Related Manuals for Konka KLC-2722US
Summary of Contents for Konka KLC-2722US
- Page 1 LCD TV SERVICE MANUAL Model list KLC-2722US KLC-3211US KLC-3222US KONKA GROUP CO,LTD. Digital Flat Display Division...
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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. Those who are thoroughly familiar with precautions necessary when working on high voltage equipment should only perform work on these models. Exercise care when servicing this chassis with power applied. -
Page 3: Specification
A. SPECIFICATION Panel Name:CMO(27 ),CPT(32 ’’ ’’ Color System : NTSC 、PAL Sound System : M/N、 Frequency range: 55.25M~805.75M IF Frenquency Video：45.75MHz Sound：41.25MHz Chroma：42.17MHz Audio output power 10%THD 4W X 2 Antenna Impedance 75Ω(Unbalance) Power Consumption 160W(27’’) , 180W(32’’) Power Supply : AC~110-240V,50/60Hz INPUT Source : Connector types Inputs &... - Page 4 Front Panel Function Control Description Note: 1. When connect the TV S-Video to DVD or other equipment’s S-Video, you need to connect TV Audio 1 input to DVD or other equipment ’ s Audio output. 2. When connect the TV Component, VGA, DVI, Video2 to other equipment’s Component, VGA, DVI, Video2, you need to connect TV Audio 2 input to other...
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Page 5: Adjustment Manual
ADJUSTMENT MANUAL Ⅰ. TEST NOTE Please follow the pointed test steps and choose the right test equipment to conduct adjustment, otherwise good effect of Unit could not be obtained. The unit should be warmed up for 30 minutes before adjustment and every parameter should be adjusted repeatedly till the optimum value obtained, the pointed voltage value should be ensured during test to get satisfied test result. -
Page 6: Block Diagram
the picture disappears. 4.5 White calibration adjustment 1 Receive black or white signal under AV or PC mode, adjusting brightness and contrast to set the brightness to 15Nit in dark area and 90 Nit in bright area. 2 Adjust white balance. Press“MENU”button once, then press “RECALL” five times to enter factory menu, select “Temp”... - Page 7 Signal Board Power Diagram VCC-3. N804 Vcc_5v Vcc_U 1117-3.3 N501 VCC-COR N805 F802 L809 1117-2.5 N501 VCC-3.3U Vcc 5v N806 N803 1117-3.3 9435A N401 Vcc 12 Vcc 12 N860 F801 9435A N200 TDA1517 INVERT N201 TDA8944J...
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Page 8: Ic Block Diagram
IC BLOCK DIAGRAM 1 N401 (TDA15011H1/N1C80) 2 N501 (MST519) -
Page 9: Troubleshooting Flowchart
Trouble Shooting Key IC list Item Type Maker Package Circuit No. Qty. TDA15011H1/N1C80 Philips QFP128 N401 MST519 MSTAR PQFP160 N501 MICROCHI 24LC32A SOIC-8 N402 MICROCHI 24LC21A SOIC-8 N302 N601 FDS9435A FAIRCHILD SOIC-8 N803 N860 TDA1517 PHILIPS SIL9MPF N200 TSSOP-16 N301,N303 FSAV330 FAIRCHILD TDA8944J... - Page 10 STEP 1 No Display ( Black ) Change AC Check AC LED ON ? Socket Fuse Socket ? Check LCD TV Video& Push the power ON/OFF switch Audio Function Check the XS805 LED Color change ? Make sure LVDS connection XS805(PIN2) Check IR/LED LCD Panel is fine...
- Page 11 XS805(PIN3) Check the connection of Change assistant Active (See Signal cable High Board Panel SPEC.) ? Change the LCD Panel Display ? Change Keypad Check Video& Function Display ? Audio Fnction Check LVDS Check Video& connection Audio Function Signal cable...
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Page 12: Schematic Diagram
Check Video& STEP 2. Audio Function No TV,VIDEO Picture Check Video& Audio Function Change apiece channels No Audio Check earphone Check channels earphone Check Check 6 pin Video& Check Speaker XS311 Audio Function Change M/B Board Change Speaker Schematic Diagram... - Page 13 XS803 C814 VCC_12V C813 N801 R801 390K 3.3n L801 C815 180p COMP CN6_3 C809 C810 MP1410ES L805 470u/25V 0.22/25V R803 R802 F801 L803 XP801 15uH C803 D801 470u/25V R804 VCC_5V VCC_Usb VCC_3.3Usb FM5820 1.5K N806 L809 VCC_Usb TO POWER R823 R822 XS805 C816...
- Page 14 VCC_3.3USB R605A R601A 1.2K 1.2K R602A R603A R604A KEY B0 V601 1.2K 1.2K V602 1.2K V603 V604 PMBTA64 PMBTA64 PMBTA64 PMBTA64 KEY B1 R691 R693 R694 R692 1.2K 1.2K 1.2K 1.2K R606A 1.2K R607A 1.2K V607 V605 V606 PMBTA64 PMBTA64 PMBTA64 R695 R696...
- Page 15 5V_DVI Vcc_5Ua 5V_DVI XS301A V302 BAV70 R620 10 R621 R636 DA2- R622 10 RX2- DA2+ RX2+ R637 100 C621 H_PLUG 0.1U RX4- R623 10 RX4+ R635 1K N601 DDC_C V622 C620 DDC_D BC847 100n R624 10 VCLK DA1- RX1- DA1+ R625 10 RX1+ R627...
- Page 16 M_RST 2 C500 C501 X501 C502 VCC_AMPLL VCC_ADC 14.318MHz C503 0.1 Y UV_HSY NC Y UV_VSY NC VGA_HSY NC VGA_VSY NC N501 VSY NC1 VCC_OP TXO0M BB[5]/LVB0M TXO0P AVDD BB[4]/LVB0P VDDP TXO1M BB[3]/LVB1M TXO1P CLK+ CLK+ BB[2]/LVB1P TXO2M CLK- CLK- BB[1]/LVB2M TXO2P RP513...
- Page 17 XS311 R224 47 N200 TDA1517 R222 AMP_L R225 47 XS302 R223 AMP_R 2.2K R220 R308 R221 2.2K C308 0.1 PHONE_R PHONE_L2 SV1_Y 2 R202 MUTE_PA R200 2.2K R307 C307 C200 0.1 CON6 V319 AMP_R C201 0.1 AMP_L 2 BAV99 2.2K S-VIDEO R203 VCC_5UA...
- Page 18 XS307 KEY B0 KEY B1 VCC_3.3USB VCC_5 L401 VCC_5UA C426 C436 C434 C435 100u/16V VCC_5Ua R114 0.01 0.01 0.01 C425 XS888 R434 C111 C428 R112 R113 R421 0.01 SDA_HW XS306 VCC_5V 1.2K C427 YUVVSY NC 0.01 L407 VCC_5V SCL_HW R433 T101 C440 C439...
- Page 19 VCC_5Ua C378 0.1 XS666 R382 100 VCC_USB R383 100 VCC_Usb FOR COLOR R505 NC AUTO_ADJUST R504 C333 C332 XS309 10u/16V N303 R503 NC R329 C352 10u L301 BEAD C538 UOC_R Pr_R 1 .047 R330 PB/Cb C353 10u L302 BEAD C535 Pb_B 1 .047 UOC_B...
- Page 20 PCB Layout Diagram...
- Page 21 Bottom...
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