CONTENTS Safety instructions………………………………………………………………………..… Adjustment instruction …………………………….…….…………………………….… Trouble shooting ……………………………………………………….…………………… Method of software upgrading ………………………………………….…….…………… LC-40K17 working principle analysis……………………………….………….…………. LC-40K17 block diagram…………………………………..……………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………..……………... Main assembly……………………………………………………………………………..… Identification criteria for the bright spot and dark spot of the LCD screen………..….
This service manual is only for service personnel to take reference with. Before Attention: servicing please read the following points carefully. Safety instructions 1. Instructions Be sure to switch off the power supply before replacing or welding any components inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production process!): a) Do not touch here and there by hand at will;...
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would be unable to work and no way to get it repaired. 2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling.
Alignment instruction 1 Alignment equipment PM5518 (video signal generator) K-7253 (VGA signal generator) CA210 (white balancer) 2 Alignment flow-chart The alignment flow-chart is shown as fig-1 Check DDC and FLASH To produce CPU board and analog board Check the CPU board and analog board All testing Connect with central signal source, then check each function of TV such as analog control etc., check the output of headphone and speaker...
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3.1 EEPROM initialization Enter the first page of factory menu, select “clear eeprom” and then press “enter”, shut down the unit after “ok” appears. 3.1.1 VPC3230 setting Enter the third page of factory menu, select SCART_PRE: 55. 3.2 VGA/DVI channel adjustment 3.2.1 Preset VGA channel mode Input VGA signal (PATTERN 5: Final Test) of K-7253, select TIME301 (640*350/70Hz), press “AUTO”...
3.3.2 white balance adjustment of TV channel Input AV signal (PM5518, PAL system, 8 level gray-scale signal), enter adjustment menu of white balance, and adjust the second level and seventh level using white balance. Adjust offset_R, offset_G and offset_B to let color coordinate of the second level be 285 and 290 and its brightness be about3.5nit.
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1.Antenna (signal): Picture is out of focus or jumping Bad status in signal receiving Poor signal Check if there are failures with the electrical connector or the antenna. Check if the antenna is properly connected. Fringe in picture Check if the antenna is correctly oriented. Maybe there is electric wave reflected from hilltop or building.
distortion in the brightest area Possibly the output quality of DVD broadcaster is set too high. It maybe also due to improper terminal connection of the video frequency signal in a certain position of the system. Picture is whitish or too bright in the Check if the setting for the brightness is too high darkest area of the picture Possibly the brightness grade of DVD player...
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2. Use a serial wire to connect the PC to the patch panel and set TV set to off state; Open the software upgrade file holder and double click FlashUpgraderNT (use under window 2000/XP/NT) FlashUpgrader (use under window 98), The following interfaces will show up after running the program: Based on the computer features, set up the serial port (COM Port).
LC-40K17 working principle analysis Please refer to LC-40K17 BLOCK DIAGRAM in order to know the working principle of LC-40K17. Brief introduction to its signal flow is shown as follows: RF signal produces composite color television signal through TUNER201, the signal together with AV1/SVHS (SVHS priority) and AV2 etc.
LC-40K17 BLOCK DIAGRAM U15 DVI DRIVER 24bit TFP403 LVDS DRIVER 24bit TUNER1 DS90C383 SCALER JAG-ASM 24bit DEINTER ITU-R656 LACER AV1-V/S-Y 8bit FLI2310 SVHS-C AV2 -V SDRAM AV-V OUT SDRAM SDRAM R G B FB I IC BUS FLASH Z86229 MEMORY...
IC block diagram 1.AD9883 Pins description: 54,48,43 PIN: Input of YPRPB 2-9 PIN: Output of Y 12-19 PIN: Output of U 70-77 PIN: Output of V 56,57 PIN: SCL, SDA applied for control the operation of IC 66 PIN: Output of horizontal synchronizing 64 PIN: Output of field synchronizing 65 PIN: Output of DE 67 PIN: Output of CLK...
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2.VPC3230 Pins description: 70 PIN: Video of AV OUT 71 PIN: Input C 72 PIN: Input Video of Y or AV1. 74 PIN: Input Video of AV2. 75 PIN: Input Video of TV 31-34, 37-40 PIN: Output format signal of. ITU-R656 27 PIN: Output of CLK 13,14 PIN: SCL, SDA applied for control the operation of IC 10,29,45,52 PIN: 3,3V_VPC power supply.
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3.FLI2310-Simplified Internal Block Diagram Pins description: 196,199-205 PIN: Input of format signal of ITU-R656 11-15,18-20 PIN: Input of U 21-28 PIN: Input of V 29,32-35,38-40 PIN: Input of Y 1 PIN: Input of YPRPB horizontal synchronizing 2 PIN: Input of YPRPB field synchronizing 4 PIN: Input of YPRPB-CLK 5 PIN: Input of YPRPB-DE 195 PIN: Input of AV/TV-CLK...
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118 PIN: Output of horizontal synchronizing 119 PIN: Output of field synchronizing 120 PIN: Output of DE 45,46 PIN: SCL, SDA applied for control the operation of IC 8,62,112,193,171,187 PIN: 3.3V power supply 155,168,16,68,123,197 PIN: 1.8V power supply 4.JAG-ASM...
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Pins description: A12, A13: Input of VGA-R A16, A17: Input of VGA-G A20, A21: Input of VGA-B P1, P2, N2, N3, M1-M4: Input of DVI-B L1-L4, K2-K4, J1: Input of DVI-R J2-J4, H1-H3, G1, G2: Input of DVI-G AA2,AA3,Y1-Y3,N1-N3: Input of AV/TV/YPRPB-B N4,V1-V4,U1-U3: Input of AV/TV/YPRPB-G U4,T1-T4,R1-R3: Input of AV/TV/YPRPB-R AB3: Input of DVI horizontal synchronizing...
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5. TFP403 functional block diagram 3.3 V 3.3 V 1.8 V Regulator Internal 50- 3.3 V Termination RED(0-7) QE(0-23) Channel 2 CH2(0-9) CTL3 Rx2+ QO(0-23) Latch Rx2- CTL2 ODCK GRN(0-7) Channel 1 Data Recovery CH1(0-9) Rx1+ TMDS Panel SCDT Latch CTL1 Decoder Interface...
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9: Input of OUTPUT DRIVE POWER DOWN 8: Output of synchronization check 10-17: Output of B 20-27: Output of G 30-37: Output of R 44: Output of CLK 46: Output of data enabling 47: Output of field synchronizing 48: Output of horizontal synchronizing 6,38,82,91,18,29,57,78,97: 3.3V power supply 6.
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7. MSP3420 50: Input of VGA-L 51: Input of VGA-R 53: Input of DVI-L 54: Input of DVI-R 56: Input of AV1/S/AV2/YPRPB1/YPRPB2-L 57: Input of AV1/S/AV2/YPRPB1/YPRPB2-R 67: Input of SIF 25: Input of earphone -L 24: Input of earphone -R 27: Output of R 28: Output of L 36: Output of AV-R...
Identification criteria for the bright spot and dark spot of the LCD screen Q’ty allowed Distance between two spots Category criteria 15" 20" 22" 30" 40" 15" 20" 22" 30" 40" One single ≤5 ≤2 ≤5 ≤2 ≤3 spot Bright ≥15mm 2 neighboring ≤2...
Troubleshooting charts 1. No raster Turn-on power supply, check if the red indicator is light in the STANDBY? blue Check PIN3 (5V STBY output) of Check the indicator in the power supply board CN3 turn-on condition Check if the indicator is flicker Non-change color in the sensor control normal condition?
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2. raster, but no picture Check if the unit Check if the all can operate? channels have signal? Which is no VGA/DVI Replacing CPU Enter factory-menu, signal of board operation CLEAR channels EEPROM, then turn YPRPB Replacing off, turn on again, it if CPU board display picture.
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3.no sound Check if PIN1 and PIN2 are 18V of XA12 Check if PIN2 is 12V of XA09 Check PIN5 and PIN8 Replacing NA04 output wave of NA03 Check power supply Check PIN27 and PIN28 output wave of Replacing NA03 NA01 Check PIN67 wave of NA01 Replacing NA01...
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PARTS LIST OF EXPLODED VIEW DESCRIPTION PART# Glass panel 740-10122-A15 Front frame assy 611-R17R1-001 POWER SWITCH HF-606 360-30042-00 POWER SWITCH BAFFLE 808-10802-AWO Connect of panel 804-20413-00 Transition piece A 870-10266-00 Transition piece A 870-1A266-00 Support B 870-10263-00 Transition piece B 870-10267-00 Mount trans-connecting support 870-10265-00...
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DESCRIPTION PART# Infrared receiver assy 667-L37K7-09 USB baffle 808-1A801-AWO Earphone assy 667-L37K7-10 LED column 700-60196-100 LED column 700-60200-00...
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