SPECIFICATIONS 1. PICTURE TUBE Size DefIection Angle Neck Diameter Phosphor Slot Pitch Low Radiation Face Treatment 3-2. Power Consumption : 17 inch (Flat Slot Mask) : 90° : 29.1 mm : P22 : 0.24 mm : TCO-99 : W-ARASC (Anti-Reflective and Anti-Static Coating), Internal Anti-Glare H/V SYNC POWER CONSUMPTION LED COLOR NORMAL (ON) ON/ON less than 130W GREEN STAND-BY OFF/ON less than 8W SUSPEND ON/OFF less than 8W OFF OFF/OFF less than 3W AMBER AMBER 4. DISPLAY AREA 4-1. Active Video Area : • Max Image Size - 325.4 x 244.1mm (12.81" 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 : 1600 Dots x 1200Lines 4-4. Video Bandwidth : 203 MHz 2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input Voltage Level : Low= ≤0.8V, High= ≥2.1V 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 MODE : 0 ~ 0.7 Vp-p : 0 Vp-p : 0.467 Vp-p : 0.7 Vp-p : 75 Ω : R, G, B Analog : Refer to the Timing Chart 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 : 10,000 ft 6. DIMENSIONS (with TILT/SWIVEL) Width : 415.0 mm (16.34") Depth : 439.0 mm (17.28") Height : 435.0 mm (17.13") 2-3. Signal Connector 15 Pin D-Sub Connector 2-4. Scanning Frequency Horizontal : 30 ~ 95 kHz Vertical : 50 ~ 160 Hz 7. WEIGHT (with TILT/SWIVEL) Net Weight : 19.2 kg (42.33 lbs) Gross Weight : 22.7 kg (50.05 lbs) 3. POWER SUPPLY 3-1. Power Range AC 100~240V (Auto Select), 50/60Hz, 2.0A Max. -2- TIMING CHART << Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Mode 1 2 3 4 5 6 7 8 9 H/V Sort Sync Polarity H + 60.023 K 1.219 16.660 V + 75.029 H 0.050 13.328 H + 37.879 K 3.200 26.400 Frequency Sync Duration Total Period (E) (D) Video Active Time (A) Front Porch (C) Back Porch (F) Blanking Time Resolution (B) 13.003 0.203 2.235 3.657 12.795 0.017 0.466 0.533 20.000 1.000 2.200 6.400 V + 60.317 H 0.106 16.579 15.840 0.026 0.607 0.739 H + 46.875 K 1.616 21.333 16.162 0.323 3.232 5.172 V + 75.000 H 0.064 13.333 12.800 0.021 0.448 0.533 H – 31.469 K 3.813 31.778 25.422 0.636 1.907 6.356 V – 59.940 H 0.064 16.683 15.253 0.318 1.048 1.430 H – 48.363 K 2.092 20.677 15.754 0.369 2.462 4.923 V – 60.004 H 0.124 16.666 15.880 0.062 0.600 0.786 H – 37.500 K 2.032 26.667 20.317 0.508 3.810 6.349 V – 75.000 H 0.080 13.333 12.800 0.027 0.427 0.533 H – 31.469 K 3.810 31.780 25.420 0.640 1.906 6.356 V + 70.082 H 0.064 14.270 12.710 0.413 1.080 1.557 H + 79.976 K 1.067 12.504 9.481 0.119 1.837 3.022 V + 75.025 H 0.038 13.329 12.804 0.013 0.475 0.525 H + 93.750 K 0.948 10.667 7.901 0.316 1.501 2.765 V + 75.000 H 0.032 13.333 12.800 0.011 0.491 0.533 -4- 1024x768 75Hz 800x600 60Hz 800x600 75Hz 640x480 60Hz 1024x768 60Hz 640x480 75Hz 720x400 70Hz 1280x1024 75Hz 1600x1200 75Hz CONTROL LOCATIONS No. Ref. No. 1 SW131 Control Function No. Ref. No. Control Function POWER SWITCH 6 OSD SELECT/ADJUSTMENT (LEFT) 2 SET BUTTON 7 3 OSD SELECT/ADJUSTMENT (RIGHT) 8 VR901 OSD BUTTON B + ADJUSTMENT 4 OSD SELECT/ADJUSTMENT (DOWN) 9 SW701 RASTER CENTER SELECT 5 OSD SELECT/ADJUSTMENT (UP) 10 VR701 HIGH-VOLTAGE ADJUSTMENT -8- 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. (a) 2. BACK COVER REMOVAL 1) Remove four screws (a) from the Back Cover. 2) Slide the Back Cover away from the Front Cabinet of the monitor. (a) (a) 3. TOP SHIELD REMOVAL 1) Remove two screws (a). 2) Remove four screws (b). 3) Remove four screws (c). 4) Remove two screws (d). (c) (c) (a) (d) (b) (a) (b) (d) (b) (b) (c) (c) - 10 - 4. TOTAL CHASSIS ASSEMBLY REMOVAL 1) Disconnect P901 (Degaussing pin), P701 (DY pin), P202 (Tilt pin), and P201 (Purity pin) from the Main PCB. 2) Disconnect P308 (GND Wire), P304, P304 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 four screws (a). 7) Remove the Total Chassis Assembly from the Main Frame. (a) (a) (a) (a) 5. CONTROL PCB ASSEMBLY REMOVAL 1) Remove three screws (a). 2) Remove the control PCB Assembly from the Front cabinet. (a) (a) (a) - 11 - 6. BOTTOM BRACKET REMOVAL 1) Remove four screws (a). 2) Remove the Bottom Bracket. Main Bracket (a) (a) (a) (a) Bottom Bracket 7. MAIN BRACKET REMOVAL 1) Remove eight screws (a). 2) Release four latches (d) from the Main Board Assembly. 3) Remove the Bottom Bracket. (a) (a) (a) (a) (a) (a) (a) (d) (d) Main Bracket - 12 - ADJUSTMENT 4. Adjustment for Factory Mode (Preset Mode). GENERAL INFORMATION 1) Display cross hatch pattern at Mode 1. 2) Run alignment program for EVF720 on the IBM compatible PC. 3) EEPROM → ALL CLEAR → Y(Yes) command. 4) DIST. ADJ. 5) COMMAND →PRESET START→Y(Yes) command. 6) Adjust tilt as arrow keys to be the best condition. 7) DIST. ADJ. → BALANCE command. 8) Adjust balance of pin balance, key balance, Top corner correction and Bottom corner correction as arrow keys to be the best condition. 9) DIST. ADJ. → FOS. ADJ command. 10) Adjust H-SIZE as arrow keys to 310±2mm. 11) Adjust H-POSITION as arrow keys to center of the screen. 12) Adjust V-SIZE as arrow keys to 230±1mm. 13) Adjust V-POSITION as arrow keys to center of the screen. 14) Adjust S-PCC (Side-Pincushion) as arrow keys to be the best condition. 15) Adjust TRAPEZOID as arrow keys to be the best condition. 16) Adjust TILT as arrow keys to be the best condition 17) Display from Mode 2) to Mode 9). 18) Repeat 10) To 15). 19) PRESET EXIT → Y (Yes) command. 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.or equivalent) - 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 in order for 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 (DEGAUSSING) on the OSD menu. ADJUSTMENT PROCEDURE & METHOD - Install the cable for adjustment such as Figure 1and run the alignment program on the DOS for IBM compatible PC. 5. Adjustment for White Balance and Luminance. 1. Adjustment for B+ Voltage. 1) Set the White Balance Meter. 2) Press the (DEGAUSSING) on the OSD menu for demagnetization of the CDT. 3) Display color 0,0 pattern at Mode 8. 4) Set Brightness and Contrast to max position. 5) COLOR ADJ. → BIAS ADJ. command of the alignment program. 6) Check whether blue color or not at R-BIAS and GBIAS to min position and B-BIAS to 127 (decimal) position at Sub-Bright Max. If it's not blue color, the monitor must be repaired. 1) Display cross hatch pattern at Mode 8. 2) Adjust C913 (+) voltage to 190±0.2V with VR901. 2. Adjustment for High-Voltage. 1) Display cross hatch pattern at Mode 8. 2) Adjust CDT Anode voltage to 26±0.2kV with VR701. 3. Adjustment for Horizontal Raster Center. 1) Display cross hatch pattern at Mode 8. 2) Adjust the raster should be center of the screen with SW701. - 16 - 7) Adjust Screen control on the FBT to 0.15±0.02FL of the raster luminance. 8) Adjust R-BIAS and G-BIAS command to x=0.283± 0.006 and y=0.298 ±0.006 on the White Balance Meter with PC arrow keys. 9) Adjust SUB-Brightness command to 0.40~0.50FL of the raster luminance. 10) Display color 15,0 box pattern (70x70mm) at Mode 8. 11) DRIVE ADJ command. 12) Set SUB-CONTRAST to 200 (decimal). 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 SUB-CONTRAST command to 55±1FL of the box pattren (70x70 mm). 16) Display color 15,0 full white patten at Mode 8. 17) COLOR ADJ. → LUMINANCE → ABL command. 18) Set the Brightness and Contrast to max position. 19) Adjust ABL to 35±1FL of the luminance. 20) Exit from the program. 6. Adjustment for Focus. 1) Display H character in full screen at Mode 8. 2) Adjust two Focus control on the FBT so that focus should be the best condition. Figure 1. Cable Connection - 17 - TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK FUSE OK? NO TROUBLE IN FUSE (F901) NO TROUBLE IN D901 NO TROUBLE IN IC903 NO TROUBLE IN IC901 YES CHECK C907 (+) VOLTAGE? 140Vdc (AC=100V) 310Vdc (AC=220V) YES CHECK IC903 PIN 3 WAVEFORM COME OUT? YES CHECK IC901 PIN 3 WAVEFORM COME OUT? YES CHECK D906, D907, D908, D909, D911, D912, D920 VOLTAGE? NO YES TROUBLE IN IC905 - 18 - TROUBLE IN D906, D907, D908, D909, D911, D912, D920 2. NO CHARACTER NO CHARACTER CHECK IC302 PIN 3, 8, 12 (12V), PIN 17 (5V)? NO TROUBLE IN P302, 5V, 12V LINE YES CHECK IC302 PIN 2, 6, 11 ? NO TROUBLE IN PC SIGNAL, SIGNAL CABLE NO TROUBLE IN IC302 NO TROUBLE IN IC303 YES CHECK IC302 PIN 29, 32, 35 ? YES CHECK R, G, B CATHODE VOLTAGE? YES TROUBLE IN CDT SOCKET - 19 - 3. NO RASTER NO VIDEO (POWER INDICATOR GREEN or ORANGE) CHECK POWER INDICATOR GREEN or ORANGE ? ORANGE TROUBLE IN P302 SIGNAL CABLE GREEN CHECK SCREEN CONTROL KNOB OF FBT MIN. (Counter-clockwise) ROTATE SCREEN CONTROL KNOB TO CLOCKWISE OK CHECK VOLTAGE AT D912 CATHODE (190V) D909 CATHODE (85V) IC911 OUT (12V) D906 CATHODE (6.3V)? NO TROUBLE IN PRIMARY CIRCUIT OF T901 NO TROUBLE IN CDT SOCKET, BOARD YES CHECK IC401 (MICOM) PIN 11 5V (HIGH), IC701 PIN 10 12V (HIGH)? YES TROUBLE IN IC401 (MICOM), IC701 - 20 - 4. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK IC601 PIN 2 (15V) ? NO TROUBLE IN T901 PIN 15 NO TROUBLE IN T901 PIN 16 NO TROUBLE IN IC701 YES CHECK IC601 PIN 4 (-12V)? YES CHECK IC701 PIN 12, 13 (SAWTOOTH WAVE)? YES TROUBLE IN IC601, V-CIRCUIT - 21 - 5. TROUBLE IN DPM STAND-BY/SUSPEND/ OFF MODE FAILURE CHECK IC401 (MICOM) PIN 8, 9 (H/V INPUT) SIGNAL? CHECK PC, (PC IS NOT GOING INTO DPM MODE) NO H / V SYNC SIGNAL INPUT H/V SYNC CHECK IC401 PIN 13, 14 WAVEFORM? NO TROUBLE IN X401, IC401 NO TROUBLE IN IC401 NO TROUBLE IN IC401 YES CHECK IC401 PIN 11 (5V, HIGH)? YES CHECK IC401 PIN 5, 19 ? YES CHECK B+ LINE (12V, 15V, 80V, 5V) ? TROUBLE IN IC911 NO DPMS TABLE TROUBLE IN T901 or PC Item H / V SYNC VIDEO LED NORMAL ON / ON NORMAL GREEN STAND-BY OFF / ON OFF(0V) AMBER SUSPEND ON / OFF OFF(0V) AMBER OFF OFF / OFF OFF(0V) AMBER Mode - 22 - 6. NO DEGAUSSING NO DEGAUSSING CHECK IC401 PIN 20 (5V)? ( BUTTON MUST BE PRESSED.) NO TROUBLE IN IC401 (MICOM) NO TROUBLE IN D914 NO TROUBLE IN P901 NO TROUBLE IN RL901 YES CHECK Q908 COLLECTOR VOLTAGE (0.5V)? YES CHECK P903? YES CHECK RL901? YES TROUBLE IN TH901, DEGAUSSING COIL - 23 - 7. NO TILT (ROTATION ) NO TILT (ROTATION) CHECK R213 VOLTAGE (12V) ? NO TROUBLE IN D913 YES CHECK Q202, Q208, Q205, Q204 ? NO TROUBLE IN Q202, Q208, Q205, Q204 YES CHECK IC401 ? NO YES TROUBLE IN P202, TILT COIL CONNECTOR, TILT COIL - 24 - TROUBLE IN IC401 8. TROUBLE IN OSD NO OSD CHECK IC301 PIN 4, 17 (5V) ? NO TROUBLE IN P302 NO TROUBLE IN P302 NO TROUBLE IN P302 NO TROUBLE IN IC301, IC401 YES CHECK IC301 PIN 5 (NEGATIVE H-PULSE COMES IN ?) YES CHECK IC301 PIN 18 (NEGATIVE V-PULSE COMES IN?) YES CHECK IC301 PIN 8, 7 (IS THERE ANY SIGNAL WHEN OPERATING FRONT CONTROL ?) YES TROUBLE IN IC302 - 25 - BLOCK DIAGRAM - 13 - DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. This is used for suppressing noise of power input line flowing into the monitor and/or some noise generated in this monitor flowing out through the power input line. That is to say, this circuit prevents interference between the monitor and other electric appliances. 5. X-ray Protection. This circuit detects the rectified DC voltage comes from the FBT pin 4. If the high voltage of the FBT reaches up to about 30kV (abnormal state), Micom(IC401) detects. It stops B+ voltage supplied to the FBT (T701), and high voltage is not be generated, (In the normal state, the high voltage is about 26kV.) 2. Degauss Circuit & Coil. The degauss circuit consists of the degaussing coil, the PTC (Positive Temperature Coefficient) thermistor (TH901), and the relay (RL901). This circuit eliminates abnormal color of the screen automatically by degaussing the slot mask in the CDT when turn on the power switch. When you need to degauss while using the monitor, select DEGAUSS on the OSD menu. 6. Micom(Microprocessor) Circuit. The operating procedure of Micom (Microprocessor) and its associated circuit is as follows: 3. SMPS (Switching Mode Power Supply). This circuit works with power of 110-240Vac (50/60Hz). The operation procedure is as follows: 1) AC input voltage is rectified and smoothed by the bridge diode (D901) and the capacitor (C907). 2) The rectified voltage (DC voltage) is applied to the primary coil of the transformer (T901). 3) The control IC (IC901) generates switching pulse to turn on and off the primary coil of the transformer (T901) repeatedly. 4) Depending on the turn ratio of the transformer, the secondary voltages appear at the secondary coil of the transformer (T901). 5) These secondary voltages are rectified by each diode (D906, D907, D908, D909, D910, D911, D912, D913) and operate the other circuits. (Deflection, Video Amplifier, etc.) 4. Display Power Management Circuit. This circuit control power consumption of the monitor by detecting H and V sync signal. There are stand-by and suspend mode. When no horizontal or vertical sync signal input, the circuit consists of Q930 and Q931 becomes stand-by and suspend mode. It’s power consumption is below 8W. When no horizontal and vertical sync signal input, it’s power consumption is below 3W. 1) H and V sync signal is supplied from Signal Cable to the Micom (IC401). 2) The Micom (IC401) distinguishes polarity and frequency of H and V sync. 3) The Micom controls each OSD function signals. (H-size, H-position, V-size, etc.) 4) The controlled data of each mode is stored in IC402. User can adjust screen condition by each OSD function. The data of the adjust screen condition is stored automatically. 7. Horizontal and Vertical Synchronous Processor. This circuit generates the horizontal drive pulse and the vertical drive pulse by taking sync-signal from Signal Cable. This circuit consists of the TDA4856(IC701) and the associated circuit. 8. D/D (DC to DC) Converter. This circuit supplies DC voltage to the horizontal deflection output circuit by decreasing DC 190V which is the secondary voltage of the SMPS in accordance with the input horizontal sync signal. 9. D/D Drive & Convert Circuit. This circuit is used for supplying B + voltage to horizontal deflection output transistor (Q708). This circuit makes to add side-pincushion correcting signal to B+ voltage. 10. Horizontal Deflection Output Circuit. This circuit makes the horizontal deflection by supplying the saw-tooth current to the horizontal deflection yoke. - 14 - 11. High Voltage Output & FBT (Flyback Transformer). The high voltage output circuit is used for generating pulse wave to the primary coil of the FBT (Flyback Transformer (T701)). A boosted voltage (about 26kV) appears at the secondary of the FBT and it is supplied to the anode of the CDT. And there are another output voltages such as the dynamic focus voltage. 12. H-Linearity Correction Circuit. This circuit corrects the horizontal linearity for each horizontal sync frequency. 13. Vertical Output Circuit. This circuit takes the vertical wave from the TDA4856 (IC701) and performs the vertical deflection by supplying the saw-tooth wave current from the TDA8172 (IC601) to the vertical deflection yoke. 14. Dynamic Focus Output Circuit. This circuit takes H and V parabola wave from the TDA4856 (IC701), and amplifies these waves to offer to the FBT (T701). 15. Vertical Blanking and Brightness Control. This circuit eliminates the retrace line by supplying a negative pulse to the G1 of the CDT. The brightness control circuit is used to control brightness of the screen by changing the DC level of G1. 17. 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 CDT near the deflection. 18. Moiré Reduction Circuit This circuit reduce interference between the periodical display pattern and the CDT's slot (or dot). The positions of every other one dot video signal beams (red, green, and blue beam) are shifted finely, thus reducing interference. 19. OSD Circuit. This circuit is used for performing the OSD (OnScreen- Display) function. When a user selects the OSD Select/Adjustment control, the adjustment status displays on the screen. 20. Video Pre-Amp Circuit. This circuit amplifies the analog video signal from 00.7V to 0-4V. This circuit is operated by taking the clamp, R, G, B drives, and contrast signals from the Micom (IC401). 21. Video Output Amp Circuit. This circuit amplifies the video signal which comes from the video pre-amp circuit and amplified video signal is applied to the CDT cathode. 16. Image Rotation (Tilt) Circuit. This circuit corrects the tilt of the screen by supplying the image rotation signal to the tilt coil which is attached to the CDT near the deflection. - 15 - WIRING DIAGRAM -9- EXPLODED VIEW EXPLODED VIEW PARTS LIST Ref. No. Part No. Q'ty Material 1 3091TKC042A CABINET ASS'Y 1 LGC GN5001TF UL94-5V 2 2423GC3E41A CDT, M41QBF423X 11N6LD 1 3 6868T17004B CDT EARTH 1 4 339-002D SCREW ASS’Y, PHP+5x30BP+GW18 4 5 4951TKS054A METAL FRAME ASS’Y 1 6 6140TC2010A DEGAUSSING COIL 1 7 6174Z-1018F FBT, FMMTC-M1018F 1 8 6200TJB003B AC SOCKET 1 TERNE SHEET 9 4950TKK210A REAR METAL ASS’Y 1 SBHG1 (t=1.0) 10 4810TKM037F MAIN BRACKET 1 LGC GN5001TF UL94-5V 11 332-102G SCREW, PTP+4x30 2 12 4951TKK014A METAL, BOTTOM SHIELD ASS’Y 1 13 6871TST159B PCB ASS’Y CONTROL TOTAL 1 14 4815TKT006C TOP SHIELD ASS’Y 1 AL (t=0.6) 15 3809TKC015U BACK COVER ASS’Y 1 LGC GN5001TF UL94-5V 16 332-102P SCREW, PTP+4x30 4 17-1 3550TKK061E SCREW COVER, RIGHT 1 LGC ABS 303S UL94-V0 17-2 3550TKK061F SCREW COVER, LEFT 1 LGC ABS 303S UL94-V0 18 3043TKK040N TILT SWIVEL ASS’Y 1 LGC HIPS 60HR UL94-HB A 6871TVT153B PCB ASS’Y, VIDEO TOTAL 1 B 6871TMT160B PCB ASS’Y, MAIN TOTAL 1 C 3313T17040B MAIN TOTAL ASS’Y 1 Description AL (t=1.0) SBHGI-A (t=1.0)