LG FLATRON 915 FT PLUS Скачать руководство пользователя | Manualshive

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SERVICE MANUAL

LG FLATRON 915FTPLUS

MODEL

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Содержание FLATRON 915 FT PLUS

Страница 1: ...SERVICE MANUAL LG FLATRON 915FTPLUS MODEL ...

Страница 2: ...AY AREA 4 1 Active Video Area Max Image Size 366 0 x 274 5mm 14 40 x 10 80 Preset Image Size 350 x 262 mm 13 78 x 10 31 4 2 Display Color Full Colors 4 3 Display Resolution 1600 Dots x 1200Lines 85Hz 4 4 Video Bandwidth 235MHz 5 ENVIRONMENT 5 1 Operating Temperature 10 C 35 C 50 F 95 F Ambient 5 2 Relative Humidity 8 80 Non condensing 5 3 Altitude 5000m 6 DIMENSIONS with TILT SWIVEL Width 470 0 mm...

Страница 3: ... 0 015 0 044 0 474 H 68 677 14 561 10 836 3 725 0 508 1 016 2 201 V 84 997 11 765 11 183 0 582 0 015 0 044 0 523 H 68 681 14 560 11 520 3 040 0 320 1 280 1 440 V 75 062 13 322 12 667 0 655 0 044 0 044 0 567 H 106 250 9 412 6 972 2 441 0 279 0 837 1 325 V 85 000 11 765 11 294 0 470 0 009 0 028 0 433 H 79 976 12 504 9 481 3 022 0 119 1 067 1 837 V 75 025 13 329 12 804 0 525 0 013 0 038 0 475 H 91 14...

Страница 4: ...No 6 7 8 9 Ref No Ref No VR901 VR2061 Control Function POWER SWITCH SET BUTTON OSD SELECT ADJUSTMENT RIGHT OSD SELECT ADJUSTMENT UP OSD SELECT ADJUSTMENT DOWN Control Function OSD SELECT ADJUSTMENT LEFT OSD BUTTON B ADJUSTMENT HIGH VOLTAGE ADJUSTMENT ...

Страница 5: ...WIRING DIAGRAM P612 P613 P610 P611 P101 P704 P733 P932 P931 P701 P904 P903 P306 P302 P301 P201 P207 P202 Anode Cap Tilt Purity Purity CDT Earth Convergence DY Degauss P319 ...

Страница 6: ...M46QDG423X 01N6LD CDT EARTH SCREW ASSY PHP 5x25 FZMW1 GW18 METAL ASSY FRAME DEGAUSSING COIL FBT FLY BACK TRANSFORMER FMMTC61 M1018D FILTER CIRC EMI 03ME3G 3 DELTA METAL ASSY FRAME BRACKET FB915B MAIN D CORE SCREW PTP 4x16 FSWR FZMY METAL FIX HEAT SINK METAL ASSY SHIELD BOTTOM PWB PCB ASSY COMPOSITE FB915 CONTROL BRAND CA 72 HAND BRACKET FB915 VOLUME SHIELD ASSY TOP BACK COVER ASSY SCREW TP1 M4x16 ...

Страница 7: ...Top Shield away from the monitor 2 BACK COVER REMOVAL 1 Remove two screw covers a 2 Remove four screws b from the Back Cover 3 Slide the Back Cover away from the Front Cabinet of the monitor a c b b d b d e e a b c a b 1 TILT SWIVEL REMOVAL 1 Set the monitor face downward 2 Remove screw a 3 Pressing the latch b carefully remove the Tilt Swivel by pulling it upward ...

Страница 8: ... P101 P207 4 Remove two screws b 5 Remove the control PCB Assembly 4 TOTAL CHASSIS ASSEMBLY REMOVAL 1 Disconnect P903 P904 Degaussing pin P704 DY pin P613 Tilt pin P610and P611 P612 Purity pin from the Main PCB 2 Disconnect P306 GND Wire from the Video PCB 3 Carefully separate the CDT Board Assembly from the CDT neck 4 Discharge the remaining static electricity by shorting between the Anode Cap an...

Страница 9: ...ve screw b 3 Remove two screws c 4 Remove two screws d 5 Remove the Main Bracket and the Bottom Bracket a a a a a b b b 8 INTERFACE ASSEMBLY REMOVAL 1 Remove five screws a 2 Remove the interface Rear Shield 3 Remove three screws b 4 Remove the Interface Front Shield and Interface PCB ...

Страница 10: ...set Mode 1 Display cross hatch pattern at Mode 13 2 Run alignment program for Flatron 915FT plus FB915B on the IBM compatible PC 3 EEPROM ALL CLEAR Y Yes command ÆPower Off ÆPower On 4 DIST ADJ SIZE MAX command 5 Adjust H SIZE MAX as arrow keys to just of the full screen size at Mode 13 6 COMMAND PRESET START Y Yes command 7 Adjust tilt as arrow keys to be the best condition 8 DIST ADJ BALANCE com...

Страница 11: ...006 on the White Balance Meter with PC arrow keys 10 Adjust SUB Brightness command to 0 5 0 1FL of the raster luminance 11 Display color 15 0 box pattern 70x70mm at Mode 8 12 DRIVE ADJ command 13 Set B DRIVE to 150 decimal at DRIVE of the alignment program 14 Adjust R DRIVE and G DRIVE command to white balance x 0 283 0 003 and y 0 298 0 003 on the White Balance Meter with PC arrow keys 15 Adjust ...

Страница 12: ...BLE IN FUSE F901 TROUBLE IN IC901 or Q902 TROUBLE IN D923 D922 D931 D924 D925 D927 TROUBLE IN IC903 CHECK FUSE OK CHECK C912 VOLTAGE 310VDC AT INPUT VOLTAGE 110VAC NO YES YES YES NO NO NO CHECK Q902 DRAIN WAVEFORM SQUARE WAVE COMES OUT CHECK D923 D922 D931 D924 D925 D927 VOLTAGE YES ...

Страница 13: ...17 5V CHECK IC302 PIN 2 6 11 CHECK IC302 PIN 29 32 35 TROUBLE IN P302 5V 12V LINE TROUBLE IN PC SIGNAL SIGNAL CABLE IC2001 TROUBLE IN IC302 TROUBLE IN CDT SOCKET NO YES NO NO YES YES CHECK R G B CATHODE VOLTAGE TROUBLE IN IC303 NO YES NO CHARACTER ...

Страница 14: ...E 195V D925 CATHODE 80V IC911 OUT 12V IC960 CATHODE 6 3V CHECK IC271 MICOM PIN 5 5V IC201 PIN 16 12V ROTATE SCREEN CONTROL KNOB TO CLOCKWISE TROUBLE IN IC271 MICOM IC201 T BASE TDA4856 TROUBLE IN SECONDARY CIRCUIT OF T901 T902 TROUBLE IN PRIMARY CIRCUIT OF T901 T902 TROUBLE IN D SUB 5 BNC SIGNAL CABLE ORANGE MIN Counter clockwise GREEN OK YES NO YES NO ...

Страница 15: ...DEFLECTION ONE HORIZONTAL LINE CHECK IC601 PIN 2 15V CHECK IC601 PIN 4 12V TROUBLE IN T901 PIN 18 TROUBLE IN T901 PIN 17 TROUBLE IN IC601 VERTICAL OUTPUT CIRCUIT NO NO YES YES CHECK IC201 PIN 12 SAWTOOTH WAVE TROUBLE IN IC201 NO YES ...

Страница 16: ...DE TROUBLE IN X201 IC271 TROUBLE IN IC271 TROUBLE IN Q903 IC913 D914 TROUBLE IN T901 or PC NO H V SYNC SIGNAL INPUT H V SYNC NO NO NO DPMS TABLE Mode Item NORMAL STAND BY SUSPEND OFF H V SYNC ON ON OFF ON ON OFF OFF OFF LED GREEN ORANGE ORANGE ORANGE VIDEO NORMAL OFF 0V OFF 0V OFF 0V YES YES CHECK B LINE 12V 15V 80V 5V TROUBLE IN R938 NO YES STAND BY SUSPEND OFF MODE FAILURE ...

Страница 17: ...V CHECK Q271 COLLECTOR VOLTAGE 0 5V CHECK P903 P904 CHECK RL901 TROUBLE IN IC271 MICOM TROUBLE IN Q271 TROUBLE IN P903 P904 TROUBLE IN RL901 TROUBLE IN TH901 DEGAUSSING COIL NO DEGAUSSING BUTTON MUST BE PRESSED NO NO NO NO YES YES YES YES ...

Страница 18: ...E IN P613 TILT COIL CONNECTOR TILT COIL NO TILT ROTATION TROUBLE IN IC911 D922 TROUBLE IN D923 IC613 CHECK IC612 PIN 12 VOLTAGE 5V NO YES YES CHECK IC612 PIN 4 12V NO TROUBLE IN IC271 MICOM IC704 IC612 YES CHECK IC612 PIN 3 NO ...

Страница 19: ...301 PIN 10 NEGATIVE V PULSE COMES IN CHECK IC301 PIN 13 14 15 IS THERE ANY SIGNAL WHEN OPERATING FRONT CONTROL NO OSD TROUBLE IN IC302 TROUBLE IN Q301 P302 TROUBLE IN Q302 P302 TROUBLE IN IC301 IC271 YES YES YES NO NO NO CHECK IC301 PIN 4 9 5V TROUBLE IN P302 D927 NO YES ...

Страница 20: ...BLOCK DIAGRAM ...

Страница 21: ...prevent output voltage to the gate of switching FET Q507 It stops operating primary circuit of the FBT T703 and high voltage is not be generated In the normal state the high voltage is about 27kV 6 Micom Microprocessor Circuit The operating procedure of Micom Microprocessor and its associated circuit is as follows 1 H and V Sync signal is supplied from the D sub to the Micom IC271 2 The Micom IC27...

Страница 22: ...tilt coil which is attached to the CRT near the deflection 19 Static Convergence Control Circuit This circuit corrects the convergence of the screen by supplying the convergence signal to the 4H STC coil which is attached to the CRT near the deflection 20 Moiré Reduction Circuit This circuit reduce interference between the periodical display pattern and the CRT s slot or dot The positions of every...

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