LG 775FTFB775BE-Ultra free download

File name Adjustment.pdf

ADJUSTMENT GENERAL INFORMATION All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes several adjustments may be required. Adjustment should be following procedure and after warming up for a minimum of 30 minutes. · Alignment appliances and tools. - IBM compatible PC. - Programmable Signal Generator. (eg. VG-819 made by Astrodesign Co.) - EPROM or EEPROM with saved each mode data. - Alignment Adaptor and Software. - Digital Voltmeter. - White Balance Meter. - Luminance Meter. - High-voltage Meter. AUTOMATIC AND MANUAL DEGAUSSING The degaussing coil is mounted around the CDT so that automatic degaussing when turn on the monitor. But a monitor is moved or faced in a different direction, become poor color purity cause of CDT magnetized, then press DEGAUSS on the OSD menu. 7) DIST. ADJ. BALANCE command. 8) Adjust balance of side-pincushion as arrow keys to be the best condition. 9) DIST. ADJ. BALANCE command. 10) Adjust parallelogram as arrow keys to be the best condition. 11) DIST. ADJ. FOS. ADJ command. 12) Adjust V-SIZE as arrow keys to 230±2mm. 13) Adjust V-POSITION as arrow keys to center of the screen. 14) Adjust H-SIZE as arrow keys to 310±2mm. 15) Adjust H-POSITION as arrow keys to center of the screen. 16) Adjust S-PCC (Side-Pincushion) as arrow keys to be the best condition. 17) Adjust TRAPEZOID as arrow keys to be the best condition. 18) Display from Mode 1 to Mode 4 and repeat above from number 12) to 17). 19) PRESET EXIT Y (Yes) command. 4. Adjustment for White Balance and Luminance. 1) Set the White Balance Meter. 2) Press the DEGAUSS on the OSD menu for demagnetization of the CDT. 3) Set Brightness max and SUB-Brightness to 120 (Decimal) position. 4) Display color 0,0 pattern at Mode 4. 5) COLOR ADJ. LUMINANCE command of the alignment program. 6) COLOR ADJ. BIAS ADJ. command of the alignment program. 7) Check whether blue color or not at R-BIAS and B-BIAS to min position and G-BIAS to 130(decimal) to adjust Sub-Brightness to 0.2±0.05FL of the raster luminance. Check it's not blue color. 8) Adjust R-BIAS and B-BIAS command to x=0.283± 0.02 and y=0.298±0.02 on the White Balance Meter with PC arrow keys. 9) Adjust SUB-Brightness command to 0.3±0.1FL of the raster luminance. 10) Display color 15,0 box pattern (70x70mm) at Mode 4. 11) Set Contrast max and SUB-Contrast to max position. 12) DRIVE ADJ command. 13) Set G-DRIVE to 150 (decimal) at DRIVE of the alignment program. ADJUSTMENT PROCEDURE & METHOD - Install the cable for adjustment such as Figure 1and run the alignment program on the DOS for IBM compatible PC. - Set external Brightness and Contrast volume to max position. 1. Adjustment for B+ Voltage. 1) Display cross hatch pattern at Mode 4. 2) Adjust voltage to 165V±0.5Vdc with VR901. 2. Adjustment for High-Voltage. 1) Display cross hatch pattern at Mode 4. 2) Adjust Anode voltage to 26kV+0.1kV, 26kV-0.2kV with VR701. 3. Adjustment for Factory Mode (Preset Mode). 1) Display cro

File name Block diagram.pdf

[ OSD Control ] H.V Signal Cable R G B VIDEO PRE-AMP (IC302) DY CDT VIDEO MAIN AMP (IC303) Heater ( 6.3V ) H-Sync Sig V-Sync Sig I2C DATA(SDA) I2C CLOCK(SCL) Screen G1 8V MICOM (IC401) 5V I2C 12V R/G/B Bias 15V I2C R/G/B Contrast OSD IC (IC301) 8V REG. (IC304) CUT OFF CONTROL 125V 8V Dynamic Focus Static Focus 5V H / V POSITION H / V SIZE SPCC TRAPIZODE PIN BALANCE PARALLELOGRAM ROTATION TOP CORNRE BOTTOM CORMOR RECALL DEGAUSSING COLOR CURVE MOIRE LANGUAGE RECALL SCL / SDA H/V Sync, PWM Control Sig 12V 15V 40V X-RAY Protection Circuit Vertical Blanking, Brightness Control - 120V 30V FBT ( T701 ) H-DRV H-OUT (Q706) B+ H-Linearity Correction E2PROM (IC402) 15V I2C TDA4856 H/V Sync H/V Sync Processor ( IC701 ) V-OUT (IC601) TDA4866 I2C TILT COIL BLOCK DIAGRAM DEGAUSSING COIL - 12 15V SMPS TRANS (T901) 165V 80V 15V -12V 6.3V 5V B-DRV DC/DC Converter 175V DPM CONTROL CIRCUIT VOLTAGE FEEDBACK 6.3V TILT Control Circuit Degaussing Circuit 6.3V Line Filter POWER INPUT 100~240VAC (50/60Hz) SMPS CONTROL (IC901) Dynamic Focus Circuit Auto Beam Limit D/D Feed Back DESCRIPTION OF BLOCK DIAGRAM 1. SMPS(Switching Mode Power Supply) When you turn on the power switch, the operating procedure is as follows: 1) The AC line voltage is rectified by the bridge diodes D900. 2) The control IC(IC901) starts switching and generates switching pulses in the primary turns of the SMPS transformer (T901). 3) The switching pulses of the primary turns are induced the secondary turns of the transformer by the turn ratio. These pulses are rectified by each diode (D920, D922, D923, D924, D926 and D937) . 4) Each rectified DC voltage (75V, 165V, 5V, 15V, 6.3V, and -12V) is supplied to the main circuit. 2. Over Voltage Protection Circuit When the input voltage of IC901 Vin(pin 4) is more than 22.5V(typical), all the secondary voltages of the SMPS transformer (T901) down to low value. 3. Display Power Management Circuit 1) Stand-by and Suspend mode. When no input of horizontal or vertical sync, Q923 and Q930, are turned on and Q920, Q926 are turned off. Then input power consumption is below 15 watts. 2) OFF mode When no input of horizontal and vertical sync, Q923, Q926, Q930 are turned off and Q920 is turned on. Then input power consumption is below 5 watts. 4. X-ray Protection Circuit When the high voltage reaches to 29kV in an abnormal case, the high voltage detector circuit, R734, R717, R718, R719, R785, VR701, IC701 start operation to shut down high voltage circuit. 5. Microprocessor Control Circuit. The operating procedure is as follows : 1) Horizontal and Vertical sync signals are supplied to the microprocessor(IC401). 2) Microprocessor(IC401) discriminates the operating mode from the sync polarity and resolution. 3) After microprocessor reads these adjusted mode data stored at EEPROM, it controls operating mode data through IIC. 4) Users can control screen condition by the OSD, SET, UP, DOWN, RIGHT and LEFT buttons. 6. D/D Convert Circuit. To obtain constant

File name Control Locations.pdf

CONTROL LOCATIONS 8 MAIN 9 1 2 4 3 5 6 CONTROL 7 No. 1 2 3 4 5 Ref. No. SW201 SW202 SW206 SW203 SW205 Control Function OSD BUTTON OSD SELECT/ADJUSTMENT LEFT OSD SELECT/ADJUSTMENT RIGHT OSD SELECT/ADJUSTMENT UP OSD SELECT/ADJUSTMENT DOWN No. 6 7 8 9 Ref. No. SW204 SW207 VR701 VR901 Control Function SET BUTTON POWER BUTTON HIGH-VOLTAGE ADJUSTMENT B+ ADJUSTMENT -8-

File name Disassembly.pdf

DISASSEMBLY 1. TILT/SWIVEL REMOVAL 1) Set the monitor face downward. 2) Pressing the latch (a), carefully remove the Tilt/Swivel by pulling it upward. 2. BACK COVER REMOVAL 1) Remove two screws cap (a). 2) Remove four screws (b) from the Back Cover. 3) Slide the Back Cover away from the Front Cabinet of the monitor. (b) (a) (a) (b) (a) 3. TOTAL CHASSIS ASSEMBLY REMOVAL 1) Disconnect P903,P902(Degaussing pin), P701(DY pin), P501(Tilt pin), P502(Purity pin), P401,P704 and P705 from the Main PCB. 2) Disconnect Pin four 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 and the CDT ground. 5) Disconnect the Anode Cap from the CDT. 6) Remove two screws (a). 7) Remove three screws (b). 8) Remove the Total Chassis Assembly from the Main Frame. SE T Anode Cap Tilt P303 P301 DY-Pin DY-Pin Degaussing Coil P302 Signal Cable (b) P704 (b) (a) P701 (b) Pu rity P903,P902 Control PCB (P201) P401 Co P402 il P501 P502 (a) - 10 - 4. VIDEO PCB ASSEMBLY REMOVAL 1) Remove four screws (a). 2) Disconnect P301, P302, P303, and Pin (b). 3) Remove the Video PCB Assembly. 6. BOTTOM BRACKET REMOVAL 1) Remove three screws (a). 2) Remove the Bottom Bracket. (a) (a) (a) 5. CONTROL PCB ASSEMBLY REMOVAL 1) Remove three screws (a). 2) Remove the Control PCB Assembly from the Front Cabinet. 7. MAIN BRACKET REMOVAL 1) Remove two screws (a). 2) Remove the Rear Bracket. 3) Remove six screws (b). 4) Release three latches (c), and remove (a) the Bottom Bracket. (b) (b) (b) (a) OS D (b) SE T (b) (b) (a) (a) (a) (c) (c) (c) - 11 -

File name Exploded View.pdf

EXPLODED VIEW 12 13-2 14 EXPLODED VIEW PARTS LIST Ref. No. Part No. 3091TKC035C 2423GC3E41B 339-002D 6140TC2007A 6174Z-1031D 6200TJB001E 4950TKK171A 4810TKM037B 332-102H 4814TKK077A 6871TST133B 3809TKC015M 3550TKK061A 3550TKK061B 332-102P 3043TKK040J 6871TMT166A 6871TVT163A 3313T17042A CABINET ASS'Y CDT, M41QBF423X 31N6LD SCREW ASS'Y, PHP+5x30BP+GW18 DEGAUSSING COIL FBT, FMMTC71-M1031A AC SOCKET METAL REAR MAIN BRACKET SCREW, PTP+4x40 SHIELD BOTTOM CONTROL PCB ASS'Y BACK COVER ASS'Y SCREW COVER (RIGHT) SCREW COVER (LEFT) SCREW, PTP+4x30 TILT SWIVEL ASS'Y MAIN PCB ASS'Y VIDEO PCB ASS'Y CHASSIS TOTAL ASS'Y Description Q'ty 1 1 4 1 1 1 1 1 2 1 1 1 1 1 4 1 1 1 1 LGC ABS HF350 85964 LGC LUPOY GN5001TF 85964 LGC ABS LGC ABS SBHG1-A SBHGI-A (t=1.0) LGC LUPOY GN5001TF Material LGC LUPOY GN5001TF 85964 3 1 2 3 4 5 B 6 7 8 9 A 4 2 5 10 7 13-1 11 12 13-1 13-2 14 15 6 15 A B 8 C 9 11 OSD SE T C 10 1

File name Specifications.pdf

SPECIFICATIONS 1. PICTURE TUBE Size DefIection Angle Neck Diameter Stripe Pitch Face Treatment Internal : 17 inch (Flat Slot Mask) : 90° : 29.1mm : 0.24mm : W-ARAS(Anti-Reflection and Anti-Static Coating) : Anti-Glare 3. POWER SUPPLY 3-1. Power Range AC 100~240V (Free Voltage), 50/60Hz, 2.0A 3-2. Power Consumption MODE NORMAL (ON) STAND-BY SUSPEND OFF H/V SYNC ON/ON OFF/ON ON/OFF OFF/OFF POWER CONSUMPTION LED COLOR GREEN less than 105W less than 15W ORANGE 2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input Voltage Level : Low=0~1.2V, High=2.5~5.5V 2) Sync Polarity : Positive or Negative 2-2. Video Input Signal 1) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 2) Input Impedance 3) Video Color 4) Signal Format less than 15W less than 3W ORANGE : 0 ~ 0.7 Vp-p : 0 Vp-p : 0.467 Vp-p : 0.7 Vp-p : 75 : R, G, B Analog : Refer to the Timing Chart 4. DISPLAY AREA 4-1. Active Video Area : · Max Image Size - 325.4 x 244.1mm (12.91" x 9.61") · Preset Image Size - 310 x 230 mm (12.20" x 9.06") 4-2. Display Color : Full Colors 4-3. Display Resolution : 1280 x 1024 / 60Hz (Non-Interlace) 4-4. Video Bandwidth : 110MHz 5. ENVIRONMENT 5-1. Operating Temperature: 10°C ~ 35°C (Ambient) 5-2. Relative Humidity : 10% ~ 90% (Non-condensing) 5-3. Altitude : 5,000m 6. DIMENSIONS (with TILT/SWIVEL) Width : 415.0mm (16.34 inch) Depth : 439.0mm (17.28 inch) Height : 435.0mm (17.13 inch) 7. WEIGHT (with TILT/SWIVEL) Net Weight : 19.2kg (42.34 lbs.) Gross Weight : 22.5kg (49.61 lbs.) 2-3. Signal Connector 15-pin Attached Connector 2-4. Scanning Frequency Horizontal Vertical : 30 ~ 70 kHz : 50 ~ 160 Hz -2-

File name Timing Chart.pdf

TIMING CHART VIDEO B A C E D F SYNC FACTORY PRESET MODE MODE MARK MODE 1 H O R I Z O N T A L MODE 2 + 46.88 21.33 16.16 5.17 0.32 1.62 3.23 + 75.01 13.331 12.798 0.533 0.021 0.064 0.448 800 x 600 75Hz Yes MODE 3 + 53.68 18.63 14.22 4.41 0.57 1.14 2.70 + 85.07 11.755 11.178 0.577 0.018 0.056 0.503 800 x 600 85Hz Yes MODE 4 + 68.677 14.561 10.836 3.725 0.508 1.016 2.201 + 85.00 11.764 11.182 0.582 0.014 0.044 0.524 1024 x 768 85Hz Yes MODE 5 -- 31.47 31.78 25.42 6.36 0.64 3.81 1.91 + 70.08 14.269 12.712 1.557 0.414 0063 1.080 640 x 400 70Hz Yes MODE 6 -- 31.47 31.78 25.42 6.36 0.64 3.81 1.91 -- 59.94 16.684 15.254 1.430 0.318 0.063 1.049 640 x 480 60Hz Yes MODE 7 + 37.88 26.40 20.00 6.40 1.00 3.20 2.20 + 60.32 16.579 15.840 0.739 0.026 0.106 0.607 800 x 600 60Hz Yes MODE 8 -- 43.27 23.11 17.78 5.33 0.89 1.33 3.11 -- 85.01 11.763 11.093 0.670 0.023 0.069 0.578 640 x 480 85Hz Yes MODE 9 MODE 10 MODE 11 -- 49.75 20.10 14.52 5.58 0.55 1.12 3.91 -- 74.95 13.407 12.542 0.865 0.021 0.060 0.784 832 x 624 75Hz Yes + 60.02 16.66 13.00 3.66 0.20 1.22 2.24 + 75.03 13.328 12.795 0.533 0.017 0.050 0.466 1024 x 768 75Hz Yes + 63.98 15.63 11.85 3.78 0.44 1.04 2.30 + 60.02 16.661 16.005 0.656 0.015 0.047 0.594 1280 x 1024 60Hz Yes Sync Polarity Frequency Total Period Video Active Time Blanking Time Front Porch Sync Duration Back Porch Sync Polarity kHz µs µs µs µs µs µs E A B C D F -- 37.50 26.67 20.32 6.35 0.51 2.03 3.81 -- Hz ms ms ms ms ms ms E A B C D F V E R T I C A L Frequency Total Period Video Active Time Blanking Time Front Porch Sync Duration Back Porch 74.99 13.335 12.802 0.533 0.026 0.080 0.427 640 x 480 75Hz Yes Resolution Recall * Mode 1~Mode 4: Basic Mode (Mode 5~Mode 11: Default Mode) -4-

File name Trouble shooting.pdf

TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK NO TROUBLE IN FUSE FUSE OK? (F901) YES CHECK C907 VOLTAGE? NO TROUBLE IN (AC120V: 170VDC, D900 AC220V: 310VDC) YES CHECK IC901 PIN 3 WAVEFORM NO TROUBLE IN (SQUARE WAVE IC901, IC902 COMES OUT?) YES CHECK D920, D922, D924, NO TROUBLE IN D923, D926 D920, D922, D923, VOLTAGE? D924, D926 YES TROUBLE IN IC923, IC925, Q922, Q923, Q924, Q925 - 16 - 2. NO CHARACTER NO CHARACTER CHECK NO TROUBLE IN IC302 PIN 7, 15, 18, P302 12V LINE, IC304 21(8V) ? YES CHECK TROUBLE IN NO IC302 PIN 6, 8, 10 ? PC SIGNAL, P301 SIGNAL CABLE YES CHECK NO TROUBLE IN IC302 PIN 16, 19, 22 ? IC302 YES CHECK NO TROUBLE IN IC303 PIN 4 (80V) 8 (12V) ? P302 12V LINE/80V LINE YES CHECK IC303 NO TROUBLE IN IC303 PIN 1, 2, 3 ? YES CHECK TROUBLE IN NO R338~R341, R, G, B CATHODE VOLTAGE? R344, R345, L302~L304, D307~D310, D312, D313 YES TROUBLE IN CRT SOCKET - 17 - 3. NO RASTER NO VIDEO (POWER INDICATOR ON) CHECK POWER INDICATOR ORANGE DPM MODE GREEN or ORANGE? (NO H and/or V SYNC) GREEN CHECK NO TROUBLE IN D712 ANODE D712 (-130V)? YES CHECK TROUBLE IN NO G1 VOLTAGE? Q801~Q806 ( 5~25V) YES TROUBLE IN D926, Q925 (6.3V) - 18 - 4. NO HORIZONTAL DEFLECTION NO H-DEFLECTION (ONE VERTICAL LINE) CHECK NO TROUBLE IN Q706? Q706

File name Wiring Diagram.pdf

WIRING DIAGRAM -9-