NPG Display Branch N9702 COLOR MONITOR User Manual N9702
NPG Display Ltd Taiwan Branch COLOR MONITOR N9702
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| Document ID | 87343 |
| Application ID | 4xpyPB27SSlLX7b+/XHocA== |
| Document Description | Exhibit 7 |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 24.95kB (311826 bits) |
| Date Submitted | 2000-02-19 00:00:00 |
| Date Available | 2000-03-27 00:00:00 |
| Creation Date | 2000-01-26 09:03:04 |
| Producing Software | Acrobat PDFWriter 4.0 for Windows |
| Document Lastmod | 0000-00-00 00:00:00 |
| Document Title | 穨N9702.PDF |
| Document Creator | 穨Microsoft Word |
| Document Author: | 穨sharon |
SPECIFICATIONS Monitor Specifications MultiSync N9702 Monitor Notes Picture Tube Diagonal: Viewable: Image Size: Radius: 17 inch 16 inch 1210 mm 90° deflection, 0.26 mm dot pitch CRT, medium –short persistence phosphor, multi-layered anti static screen coating, semi-tint screen, Invar Shadow Mask and Opticlear screen surface. Input Signal ANALOG 0.7Vp-p/75 Ohms Separate sync. Positive/Negative Video: Sync: Display Color Analog input: Synchronization Horizontal: Range Vertical: Resolutions Supported Resolution based on horizontal and vertical frequencies only Unlimited number of Colors Depends on display card used. 31 kHz to 86 kHz Automatically 55 Hz to 160 Hz Automatically 640 × 480 @ 60 to 160 Hz Some systems may not support 800 × 600 @ 55 to 137 Hz all modes listed. 832 × 624 @ 55 to 128 Hz 1024 × 768 @ 55 to 105 Hz 1152 × 870 @ 55 to 95 Hz 1280 × 1024 @ 55 to 80 Hz … … … NEC cites recommended resolution at 1600 × 1280 @ 55 to 68 Hz 85 Hz for optimal display performance. Active Display Area (Factory Setting) Horizontal: 310 mm Vertical: 232 mm Dependent upon signal timing used, And does not include border area. Active Display Area (Full Scan) 325 mm 244 mm Power Supply Current Rating Dimensions AC 100 - 240V, 50/60Hz 2.2A @ 100 - 240V 403 mm (W) × 420 mm (H) × 418 mm (D) Weight 16.0 kg Environmental Considerations Operating Temperature: Humidity: Feet: Storage Temperature: Humidity: Feet: Dependent upon signal timing used, And does not include border area. 0° C to + 35° C 30% to 80% 0 to 10,000 Feet -20° C to + 60° C 10% to 90% 0 to 45,000 Feet NOTE: Technical specifications are subject to change without notice. CONTROLS – of the monitor + function as follows: On-screen display control buttons on the front SELECT RESET SELECT Enters and exits the OSM menu and decides the icon. CONTROL − / + Selects one of the controls and increases or decreases the adjustment. RESET Resets the highlighted control to the factory Setting. Adjusts the overall image and background screen brightness. Adjusts the image brightness in relation to the background. Red Color Control: Adjust the red contrast of the display. Green Color Control: Adjust the green contrast of the display. Blue Color Control: Adjust the blue contrast of the display. Moves the image horizontally (left or right). Moves the image vertically (up or down). Increases or decreases the horizontal size of the image. Increases or decreases the vertical size of the image. Increases or decreases the curvature of the sides either inward or outward. Increases or decreases the top of the screen to be the same as the bottom. Increases or decreases the tilt of the sides either to the left or right. Increases or decreases the curvature of the sides either to the left or right. Rotates the entire display clockwise or counterclockwise. Degauss Control: Eliminates the buildup of stray magnetic fields that alter the correct scan of the electron beams and affect the purity of the screen colors, focus and convergence. When activated, your screen image will jump and waver a bit as the screen is demagnetized. Caution: Please allows a minimum of 20 minutes to elapse between uses of the Degauss Control. 9300K This color setting is adjusted at the factory to the stated Kelvin Moves the OSM menu vertically (up or down). Moves the OSM menu horizontally (left or right). EXIT: To exit the OSM window. Select EXIT in “Icon select window”, then push SELECT button to exit OSM window. Note: If no buttons are pushed after 10 seconds while in OSM, the window will automactically disappear. SERIAL NUMBER INFORMATION Refer to the serial number information shown below. SERIAL NUMBER LABEL MODEL SERIAL No. Manufactured Year : ( Last digit ) Manufactured Month : January to September October November December 1 to 9 00001 ~ on ward (Start from 00001 ~ when month is changed.) Factory mark : NPG CHINA ...............................Y It doesn’t have meaning specially DISASSEMBLY Ÿ Ÿ Ÿ Ÿ Before you disassemble the set, turn off power and pull out the power plug. Use a proper screwdriver. If you user screwdriver that does not fit, you may damage the screws. Disassembly is the opposite process of assembly. Carefully discharge the CRT anode potential by grounding to CRT dag ground harness before removing Anode Cap. MAIN BOARD and CRT BOARD EXPLANATION 1. Disassemble a screw like a picture. 2. Unsolder the GND wire (CRT coating earth wire) from MAIN BOARD ASSY and CRT BOARD ASSY. This model has two kinds of CRT. Depend on CRT, the GND wire assembly is some different. Be careful. 3. Disconnect the connector “S201”, “S202”, “S203”, Coating earth connector, and screen lead from the CRT BOARD ASSY. 4. Disconnect the CRT BOARD ASSY from the CRT. 5. Disconnect the connector “S301”, “S601”, “S703”, “S701”, “S104” and “P102” from the MAIN BOARD ASSY. 6. Remove the Anode Cap from the CRT. NOTE: Carefully discharge the CRT anode by shorting it to ground before removing Anode Cap. ADJUSTMENT SPECIFICATIONS TABLE OF CONTENTS Page (1) Adjustment Tools ..................................................................................................................... 7 (2) Timing Table ........................................................................................................................... 7 (3) Definition for Normal Condition ................................................................................................. 7 (4) B+ Adjustment ........................................................................................................................ 7 (5) H. V. Adjustment ..................................................................................................................... 8 (6) X-ray Test ............................................................................................................................... 8 (7) H-Center Adjustment ............................................................................................................... 8 (8) H-Size Adjustment .................................................................................................................. 8 (9) Mode 11 Pre-Adjustment ......................................................................................................... 8 (10) White Balance Adjustment ..................................................................................................... 8 (11) Focus Adjust ......................................................................................................................... 8 (12) Convergence Adjust .............................................................................................................. 9 (13) Automatically adjust .............................................................................................................. 9 (14) White balance check and ABL adjust ...................................................................................... 9 (15) Power Saving Test ................................................................................................................ 9 (16) DCC 1/2B Test ...................................................................................................................... 10 (17) Timing Sheet ......................................................................................................................... 11 N9702 Adjustment Specifications (1) Adjustment tools: (A) (C) (E) (G) (I) (2) Color Analyzer Multi meter Convergence Meter Power Meter DDC test fixture (B) CHAROMA 2135 or Function Generator (D) Hi-Pot Probe (F) Degauss Probe (H) Automatic Alignment System TIMING TABLE(FACTORY MODE –16 MODES) MODE 10 11 12 13 (3) Ver. 1.0 2000,1,06 RESOLUTION VGA400 VGA640*480 640*480(75) 640*480(85) 800*600(75) MACⅡ 50K 800*600(85) 1024*768(75) 1280*1024(60) 1024*768(85) 1280*1024(75) Free run Adj. H.CENTERING,EHT H-SYNC EREQ. 31.4kHz 31.4kHz 37.5kHz 43.2kHz 46.8kHz 49.7kHz 53.6kHz 60.0kHz 64.0kHz 68.6kHz 79.9kHz 30.0kHz 85.938kHz V-SYNC FREQ H . POLARITY 70Hz 60Hz 75Hz 85Hz 75Hz 75Hz 85Hz 75Hz 60Hz 85Hz 75Hz 69Hz 85Hz V . POLARITY Definition for Normal Condition: (A) INPUT AC VOLTAGE 110V/50HZ. (B) WARM UP TIME 30 MINUTES. (C) CROSSHATCH PATTERN. (D) ALL VR ADJ CENTER. (E) CRT FACE TO EAST DIRECTION (F) COLOR TEMP 9300K (4) B+ Adjustment: (A) (B) (C) (D) MODE: 69kHz 1024*768(85) PATTERN: CROSSHATCH Adjustment: Adjust VR102 to make the cathode of D112 has 14.8V±0.1V on cathode. CHECK: CHECK OTHER POWER SOURCE should be 82±2V,7.0±0.3V, 46V±2V,-12.1V±0.5V. (5) H.V. Adjustment: (A) MODE: 86kHz 85Hz (B) PATTERN: ALL BLACK(Brightness cut off) (C) Adjustment: Adjust VR302 to make the high voltage has 25.5±0.2KV (6) H-Free run Adjustment: (A) MODE: 30kHz (B) PATTERN: ALL WHITE (C) Adjustment: a. Tp6 connect 1uF/50V E-Cap to Ground. b. Adjust VR306 to take H o/p Frequency is 30kHz or the screen stand up. c. Take away E-Cap. (7) X-RAY test: (A) MODE: 86kHz 85Hz (B) PATTERN: CROSSHATCH(Brightness just cut off) (C) Test: a. Make TP1 and TP2 to be short circuit confirm the X-ray reactive. b. Reset the power. (8) H-CENTER adjustment (A) MODE: 86kHz 85Hz (B) PATTERN: CROSSHATCH (C) Adjustment: Adjust VR301 to make raster is centrally on CRT (9) H-size adjustment: (A) MODE: 37.5kHz 640*480(75) (B) PATTERN: CROSSHATCH (C) Adjust H-SIZE, OSD set to Max, then adjust VR305 to make the full scan. (10) MODE 11 Pre-Adjustment: (A) MODE: 79.9kHz 1280*1024(75) (B) PATTERN: CROSSHATCH (C) Adjust V-CENTER, H-SIZE, V-SIZE, PINCUSHION, TRAPEZOID, H-PHASE to make Picture Position Center and Picture Size 310*232mm. (11) WHITE BALANCE adjustment (A) MODE: 69kHz 1024*768(85) (B) PATTERN: ALL BLACK (C) Adjustment: a. WARM UP 30 min. b. Make External Degauss. c. Factory mode R-BIAS/G-BIAS/B-BIAS set to 20% data. d. Adjust SCREEN VR (FBT) to 500±10V e. CUT OFF Adjustment: Video signal off (0Vp-p), bright set to MAX, adjust VR304 VR (G1), at the brightness 1~1.5FL.(4.2±0.8 cd/m²) f. Adjust R-BIAS, G-BIAS, B-BIAS to make x=283±5, y=297±5, with readjusting G2 to keep the brightness between 1~1.5FL(4.2±0.8 cd/m²). (12) FOCUS adjust: (A) (B) (C) (D) (E) (F) (G) MODE: 86k 1280*960(85) ALL WHITE Adjust H.parabola Vp-p by OSM H-Focus control to keep P303 pin1 300Vp-p MODE: 46.875kHz 800*600(75) ALL WHITE Adjust H.parabola Vp-p same (B) MODE: 69kHz 1024*768(85) PATTERN: CROSSHATCH Adjust Focus VR(S), horizontal line must be clearly. Adjust Focus VR(D), vertical line must be clearly. (13) Convergence adjust: (A) MODE: 69kHz 1024*768(85) (B) PATTERN: CROSSHATCH. (C) Adjustment: Use the convergence meter to check the spec. if can not follow the spec, adjust Yoke coil to make be follow the spec. (14) Automatically adjust: Adjust H-SIZE, V-SIZE, H-PHASE, V-PHASE, PINCUSHION, TRAPEZOID R.G.B. GAIN by factory product line automatic adjustment system─systemER9300 ,ER2300)(Adjust NO.1~11MODE). H.SIZE : 310±3mm V.SIZE : 232±2mm H.POSI : ±2mm V.POSI : ±2mm (15) White balance check and ABL adjust: (A) MODE: 69kHz 1024*768(85) (B) PATTERN: CENTER BLOCK(WINDOW) (C) Contrast control set to Max and brightness control set to the Max, adjust R.G.B. GAIN standard as below 9300K x=0.283±0.010 7500K x=0.300+0.010 y=0.297±0.010 y=0.315-0.010 Y=206±10 cd/m² Y=206+10 cd/m 6500K (D) (E) (F) (G) x=0.315±0.010 y=0.325±0.010 Y=206±10 cd/m² PATTERN: FULL WHITE 9300K. If they are out of spec, adjust to following: BRIGHTNESS: Back raster is 0.2 cd/m² position CONTRAST MAX: (MAX-5 digit )~(MAX) Adjust R/G/B gain to be 9300K color due to about spec. When adjust 7500/6500K color，keep brightness and contrast max position to (E) condition. Adjust R/G/B/ GAIN to be 7500/6500K color due to about spec.. Adjustment: Brightness control and contrast control set to Max, adjust VR303 to Y=29~31FTL(103±3cd/m²) (16) POWER SAVING Test: (A) MODE: 60kHz 1024*768(75) (B) PATTERN: ANY PATTERN. (C) Adjustment: a. It should be into suspend mode when signal quit after 5 sec.2nd the power output must be ≦15W. Check the LED color :Orange. b. It should be into power off mode when into suspend mode after 3sec.and the power output must be≦8W. Check the LED color :Orange c. Transfer the signal and check the screen is normal. Check the LED color :Green (17) DDC 1/2B Test: (A) MODE: Any MODE. (B) PATTERN: Any PATTERN. (C) Scan bar code label and apply serial NO. to EDID Data. 10 (18) TIMING TABLE Preset Mode No. Signal Name Resolution Dot Clock (MH fh fv (kHz (Hz) Total VGA 640*400 VGA 640*480 VESA 640*480 (75) VESA 640*480 (85) VESA 800*600 (75) (MAC) 832*624 (75) 800*600 49.500 46.875 832*624 57.283 49.725 640*400 640*480 25.175 25.175 31.47 31.469 640*480 640*480 31.500 36.000 37.50 43.269 70.09 59.940 75.00 85.008 75.00 74.550 (dot) (uS) 800 31.78 800 31.778 840 26.667 832 23.111 1056 21.333 1152 20.111 Disp (dot) (uS) 640 25.42 640 25.422 640 20.317 640 17.778 800 16.162 832 14.523 Front (dot) (uS) 16 0.64 16 0.636 16 0.508 56 1.556 16 0.323 32 0.559 Sync Pulse (dot) (uS) 96 3.18 96 3.813 64 2.032 56 1.556 80 1.616 64 1.117 Back (dot) (uS) 48 1.91 48 1.907 120 3.810 80 2.222 160 3.232 224 3.910 Total (H) (mS) 449 14.268 525 16.683 500 13.333 509 11.764 625 13.333 667 13.414 Disp (H) (mS) 400 12.711 480 15.253 480 12.800 480 11.093 600 12.800 624 12.549 Front (H) (mS) 12 0.381 10 0.318 0.027 0.023 0.021 0.020 Sync Pulse (H) (mS) 0.064 0.064 0.080 0.069 0.064 0.060 Back (H) (mS) 35 1.112 33 1.049 16 0.427 25 0.578 21 0.448 39 0.784 Interlace Polarity (H/V Composite Sync Composite Video Character Font Serration EQP NON NON NON NON NON NON NEG/POS NEG/NEG NEG/NEG NEG/NEG POS/POS NEG/NEG 7*9 OFF 7*9 OFF 7*9 OFF 7*9 OFF 7*9 OFF 7*9 OFF OFF OFF OFF OFF OFF OFF 11 Preset Mode No. Signal Name Resolution Dot Clock (MHz) fh (kHz) fv (Hz) VESA 800*600 (85) 10 11 VESA VESA VESA VESA 1024*768 1280*1024 1024*768 1280*1024 (75) (60) (85) (75) 800*600 1024*768 1280*1024 1024*768 1280*1024 56.250 78.750 108.000 94.5 135.0 53.674 85.061 60.023 75.029 63.981 60.020 68.677 85 79.976 75.025 Total (dot) (uS) 1048 18.631 1312 16.660 1688 15.630 1376 14.561 1688 12.504 Disp (dot) (uS) 800 14.222 1024 13.003 1280 11.852 1024 10.836 1280 9.481 Front (dot) (uS) 32 0.569 16 0.203 48 0.444 48 0.508 16 0.119 Sync (dot) (uS) 64 1.138 96 1.219 112 1.037 96 1.016 144 1.067 Back (dot) (uS) 152 2.702 176 2.235 248 2.296 208 2.201 248 1.873 Total (H) (mS) 631 11.756 800 13.328 1066 16.661 808 11.765 1066 13.329 Disp (H) (mS) 600 11.179 768 12.795 1024 16.005 768 11.183 1024 12.804 Front (H) (mS) 0.019 0.017 0.016 0.015 0.013 Sync (H) (mS) 0.056 0.050 0.047 0.044 0.038 Back (H) (mS) 27 0.503 28 0.466 38 0.594 36 0.524 38 0.475 Interlace Polarity (H/V) Composite Sync Composite Video Character Font Serration EQP NON NON NON POS/POS POS/POS POS/POS NON NON POS/POS POS/POS 7*9 7*9 7*9 7*9 7*9 OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF 12 15 16 FREE H.CENT Preset Mode No. Signal Name Resolution Dot Clock (MHz) fh (kHz) 640*400 1024*768 25.24 125.4 30.05 85.938 69.56 85.002 fv (Hz) Total (dot) (uS) 840 33.278 1728 11.636 Disp (dot) (uS) 640 25.357 1280 8.62 Front (dot) (uS) 16 0.631 64 0.431 Sync (dot) (uS) 64 2.536 160 1.077 Back (dot) (uS) 120 4.754 224 1.508 Total (H) (mS) 432 14.376 1011 11.764 Disp (H) (mS) 400 13.311 960 11.171 Front (H) (mS) 0.033 0.012 Sync (H) (mS) 0.067 0.035 Back (H) (mS) 29 0.956 47 0.547 Interlace Polarity (H/V) Composite Sync NON NON NEG/POS POS/POS Composite Video Character Font Serration 7*9 OFF OFF EQP 13 7*9 OFF OFF INSPECTION 1. Inspection of PLUG & PLAY communication 1-1. A construction of System This system should be connected as shown below. [ TEST PROGRAM PART No. 599910408 Program Disk Monitor Signal Generator PC R GB H V Power Cable Signal Cable Fixture Power Cable 1-2. Starting method 1) Input Signal Input signal must be separate sync. Timing is the signal whose vertical synchronization frequency is between 55Hz and 25kHz. Horizontal synchronization frequency should be set to 31.5kHz. 2) Power ON procedure ž ž ž ž First, put the floppy disk for PnP Inspection into PC and turn on PC. Turn on Fixture. Make sure that fixture’s LED turns on and off. Turn on signal generator and monitor. 3) Starting PC Software ž Inspection of PnP communication To check the PnP communication, for N9702, EDID file name is N9702. Type “P N9702” on DOS command line and press return key. ž Writing EDID to EEPROM and inspection of PnP communication To write EDID to EEPROM and check the PnP communication of N9702, type “WP N9702” on DOS prompt line and press return key. 14 1-3. Operation ž The operation should be performed according to the screen message. ž The message of “Normally Complete” means that writing of EDID data or PnP inspection completed normally. The message of “Error” means that writing of EDID data or PnP inspection finished incorrectly. ž When the PnP inspection is completed, read EDID data would be displayed. And if the read EDID data differed from the original EDID data, the different bytes would be displayed in red. ž For the details of error, see the messages displayed at the bottom right of the screen. The meaning of the messages is shown on section 4. ž After writing of EDID data or inspection of DDC2B, monitor can not be communicated by DDC1. In that case, turn off and on the monitor again, which will make the DDC1 communication test possible. ž Make sure that fixture’s LED flashes on and off before writing EDID data, inspecting DDC1 and DDC2B. If the fixture’s LED does not flash on and off, turn off and turn on the monitor and the fixture. 1-4. Error Messages ž Start Bit Error This message is displayed when the start bit is not “H” while sending data from PC to MPU on the fixture. This error will be caused by noise etc. on the line. ž Command Error This message is displayed when the different command is sent from PC to MPU on the fixture. ž Hardware Error This message means that the PC does not recognize ACK command sent from the MPU on the fixture. ž File Open Error This message means that the input EDID file name was wrong. ž Command line Switch Error This message means that the input communication command is incorrect. ž Parity Error This message is displayed when the MPU on the fixture recognized the parity bit is incorrect. This error can be caused by noise etc. on the line. ž EDID Data Error This message is displayed when the null bit is not detected in EDID data read by DDC1 communication. ž EDID Data Sort Error This message is displayed when the header code is not detected in EDID data read by DDC1 communication. ž Time Out Error This message is displayed when the PC does not recognize ACK commands sent from MPU within 10 msec after the PC had sent communication command or EDID data. If this error occurs, check the connection on PC, fixture and monitor. 15 1-5. EDID data file The EDID data file text is shown below. When you write or inspect EDID for this monitor, the following table can be used. File name: N9702 00 00 FF 10 *1) *2) 20 11 48 30 81 99 40 13 00 FF FF FF FF FF 00 38 A3 F0 AB 01 01 01 01 01 02 08 25 1B 78 EA 22 28 A1 54 48 99 26 4C FF FF 80 31 59 45 59 61 59 71 4F 81 59 A9 4F D1 40 86 3D 00 C0 51 00 30 40 40 A0 64 0B 11 00 00 1E 00 00 00 FD 00 37 A0 1F 50 60 18 00 0A 20 20 20 20 20 20 00 00 00 FC 00 4D 60 75 6C 74 69 53 79 6E 63 20 39 30 0A 00 00 00 FF 70 00 *3) *3) *3) *3) *3) *3) *3) *3) *3) *3) *3) *3) *3) 00 *4) Table 1-1. Data list (Management number) ※1 : address 10h ※2 : address 11h ※3 : address 71h ~7Dh ※4 : address 7h BUS ACTIVITY MASTER SDA LINE 12pin BUS ACTIVITY Month of Manufacture × 4 Year of Manufacture – 1990 Serial Number String (ASCII code) If less than 13 bytes then terminate with ASCII code 0Ah and pad field with ASCII code 20h. This Address should be programmed such that a one-byte checksum of the entire 128 byte EDID equals 00h. A CONTROL BYTE C DATA n C DATA n+ 1 C Diagram 1-1 Timing chart of DDC2B 16 DATA n+X SAMSUNG CDT Spec. Screen and faceplate blemishes 1. Test procedure Set up the tube and adjust the light output on a blanked raster at the center of the screen for approximately 54 lm/m² (5 F/L) and 9300°K + 27 M.P.C.D. (OR 6550°K + 7 M.P.C.D.) color temperature. The screen should be viewed at a minimum distance of 60cm (2 feet). Ambient light level at the tube face should be approximately 1.0 lux. In the non-operating condition the screen may be viewed under highlevel, single source incandescent light of 700 to 1,000 lux measured at the faceplate surface. The size of a round blemish is equal to its diameter. The size of an irregularly shaped blemish is equal to its equivalent diameter, defined as the average of the major and minor axes. 2. Classification of screen and faceplate blemished Blemishes are divided into phosphor screen blemishes and glass bulb blemishes. (1) Phosphor screen blemishes Blemishes are classified depending upon the next table and judged with the standard specified in clause 4. Degree of contrast Contents of blemish Valuation of blemish High-contrast − Black spot − More than 50% of missing phosphor dot The number of blemished and quality area Medium-contrast − 25 to 49% of missing phosphor dot − Non-uniformity lighted part − Smudge and so on Ditto Low-contrast (2) Faceplate blemishes Blemishes are classified as scratches and bulb defects and judged with the standard specified in clause 5. 3. Quality area Zone Tube size 19” Zone A Rectangle area concentric with the center of screen 315 × 236mm Zone B Remaining useful screen area Ditto 17 4. Limits of phosphor screen blemishes (1) High-contrast blemishes The following criteria is applied to high-contrast blemishes. Allowable Minimum Separation(mm) Allowable No. of blemishes Blemish Zone A Zone B Total (Zone A & B) Zone A Zone B A+B 1 trio ----- 20 (1) (2) (3) ---- 20 20 20 20 10 50 20 20 1 dot Green Red Blue In case of A+C 50 20 20 In case of A+C+D 50 20 20 (1) 3 or more consecutive same color phosphor dots (2) 2 consecutive same color phosphor dots (3) 2 consecutive different color phosphor dots (2) Medium-contrast blemishes The following criteria is applied to medium-contrast blemishes. Blemish Allowable maximum number Allowable minimum separation(mm) Zone A Zone B Zone A Zone A+B 3 consecutive dot 30 30 2 consecutive dot 1 dot ignore ignore 20 20 Note) Minimum separation is 20 mm among any high and medium contrast blemishes (excluding 1 dot medium contrast blemishes). (3) Low-contrast blemishes The following criteria is applied to low-contrast blemishes. Blemishes In zone A Equivalent diameter of the total area of lowcontrast blemishes should be less than 13mm. Extended blemishes In both zones A and B Equivalent diameter of the total area of lowcontrast blemishes should be less than 50mm. 18 5. Limits of faceplate blemishes (1) Scratches The following criteria is applied to scratches on the faceplate of color display tubes. Maximum size of scratches allowable Width (mm) Length of single scratch(mm) Allowable number 0.05 or less 0.06 ~ 0.12 Ignore 50 or less 0.13 ~ 0.20 Over 0.20 10 or less (2) Limits of faceplate defects The following criteria is applied to defects of useful screen on panel face. Zone Major defects Gathering defects within ϕ 50mm Elongated Zone A Zone B Blister (mm) 0.41 ~ 0.60 0.41 ~ 0.60 Opaque spot & open blister (mm) 0.31 ~ 0.50 0.31 ~ 0.50 Allowable number of defects Single zone Total Allowable minimum separation(mm) Blister (mm) Opaque spot & open blister (mm) Allowable number of defects Allowable minimum separation Width (mm) Maximum length (mm) Allowable number of defects Single Total Allowable minimum separation 19 50 0.25 ~ 0.60 0.20 ~ 0.60 12.7 0.10 ~ 0.20 4.0 0.10 ~ 0.30 6.0 76 LG CDT Spec. Limits of Screen and Faceplate Blemish 1. Test Procedure Set up the tube and adjust the light output on a blank raster at the center of the screen for approximately 15 FL and C.I.E x = 0.281, y = 0.311 (or x = 0.313, y = 0.329) color coordinate. The screen should be viewed at the minimum distance of 60 cm (2 feet). Ambient light level at the tube face should be approximately 5.0 Lux. In the non-operating condition the screen may be viewed under high level, single-source incandescent light of 700 to 1,000 lux measured at the faceplate surface. The size of a round blemish is equal to its diameter. The size of an irregularly shaped blemish is equal to its equivalent diameter, defined as the average of the major and minor axis. 2. Quality area Zone Tube size 41 cm Zone A Zone B Rectangle area concentric with the center of screen Remained useful screen area 300mm x 225mm Remained area 3. Phosphor screen blemishes 3.1 The criteria of blemish classification Category Entire defects Partial defects Other defects Contents of blemish Blank Spot 50% or more of complete dot is missing 25 to 49% of complete dot is missing Non-uniformity lighted part 20 3.2 High contrast blemishes Blemish Min. separation [mm] Zone A Zone B Total (zone A & B) Zone A Zone B * (2) * (3) green 50 50 50 20 blue red Incase of C+D 10 50 20 50 20 1 trio * (1) Allowable number of blemishes 1 dot *Note: (1) 3 or more consecutive same color phosphor dots (2) 2 consecutive same color phosphor dots (3) 2 consecutive different color phosphor dots 3.3 Medium contrast blemishes 3 consecutive dots Allowable max. number Zone A Zone B 2 consecutive dots 1 dot ignore Blemish Ignore Allowable min. separation [mm] Zone A Zone B 30 30 20 3.4 Low contrast blemishes Blemishes in zone A Equivalent diameter of the total area of lowcontrast blemishes should be less than 13mm. Extended blemishes in both zone A and B Equivalent diameter of the total area of lowcontrast blemishes should be less than 50mm. 3.5 Other defects Equivalent diameter of the total area should be less than 13mm. 21 4. Faceplate blemishes The following criteria of the scratches and the limits of faceplate defects are applied to the useful screen of the panel face. 4.1 Scratches Width (mm) 0.05 or less 0.06 ~ 0.12 Length of single scratch (mm) Ignore 50 or less Allowable number 0.13 ~ 0.20 Over 0.21 6 or less 4.2 Limits of faceplate defects Defects Major defects Gathering defects within φ 50 mm Elongated Blister Opaque spot & open blister(mm) Allowable number of defects Single zone Total Allowable minimum separation(mm) Blister Opaque spot & open blister(mm) Allowable number of defects Allowable minimum separation(mm) Width (mm) Maximum length (mm) Allowable number of defects Total 22 Zone A 0.41 – 0.60 0.41 – 0.60 Zone B 0.41 – 0.60 0.41 – 0.60 57 0.25 – 0.40 0.20 – 0.40 12.7 0.10 – 0.20 4.0 0.10 – 0.30 6.0 4.3 Definition of coating defects Ring of defects Contents of defects Valuation of defect Ÿ Reflective spots and coating High-contrast The number of defects and quality area voids Ÿ Clearly visible by reflection Ÿ Cloudy visible by reflection Ÿ Same reflection as low contrast Ÿ Not include high contrast Low-contrast Elongated Ditto Ditto reflectance 4.4 Criteria of coating defects The following criteria is applied to defects of useful screen area. Zone Zone A Kinds of defect Size of defects(mm) less than 0.5 0.5-1.0 ignore Zone B 1.1-1.5 over 1.6 less than 0.5 0.5-1.0 ignore 1.1-1.5 over 1.6 Allowable High contrast number of defects Allowable min. separa- 30 30 tion(mm) Size of defects(mm) less than 1.5 1.5-3.0 over 3.1 less than 1.5 1.5-3.0 over 3.1 ignore Allowable Low contrast number of ignore defects Allowable min. separa- 20 20 tion(mm) 3.0 or less Width(mm) Maximum Elongated length(mm) less than 10 10 or over ignore Allowable number of defect 23 TROUBLE SHOOTING Refer to User’s Manual trouble shooting section before using this chart. TABLE OF CONTENTS Page 1. NO OPERATION, POWER LED FLASH ...................................................................................... 25 2. NO OPERATION, POWER LED OFF .......................................................................................... 26 3. VIDEO NOISE, UNSYNCHRONOUS .......................................................................................... 27 4. NO VIDEO ................................................................................................................................. 28 5. NO RASTER .............................................................................................................................. 29 6. TROUBLE IN H.V SYNC ............................................................................................................ 30 7. PINCUSHION POOR ................................................................................................................. 31 8. FOCUS POOR ........................................................................................................................... 32 24 1. NO OPERATION, POWER LED FLASH POWER LED FLASH POWER SW TURN OFF MULTIMETER TEST Q315, Q312, D114, D110,D111,D112,D113 POWER SW TURN OFF 25 2. NO OPERATION, POWER LED OFF POWER SW TURN OFF CHECK F101 CHECK Q101 1. 2. CHECK U101 U101 PIN6 PULSE O/P DC P/S O/P VOLTAGE SET AT 17V,CURRENT SET AT 200MA. POSITIVE CONNECT TO C109”+”. NEGATIVE CONNECT TO C105”-“. SCOPE SET AT 10V/DIV, 10US/DIV, PROBE CONNECT TO Q101-GATE AND C105”-“. CHECK U101 PIN 7 VCC PIN 4 SAWTOOTH PIN 8 = 5V NO POWER SW TURN ON FAILURE R111, ZD103 26 3. VIDEO NOISE, UNSYNCHRONOUS CHECK Q101 G-S FREQUENCY YES CHECK C114, R116 D109, R115, R117 NO SYNCRONIZE WITH H-SYNC YES CHECK Q312 FREQUENCY CHECK U301 NO SYNCRONIZE WITH H-SYNC NORMAL OPERATION 27 NO CHECK HORIZONTAL FREQUENCY C114 TO GND 4. NO VIDEO NO VIDEO YES CHECK SCREEN CONTROL REFER NO NO RASTER CLOCKWISE YES CHECK U201 PIN 2, 6, 11 SIGNAL LEVEL NO TROUBLE IN R/G/B SIGNAL, SIGNAL CABLE NO TROUBLE IN U201 CLAMP(PIN 19) U201 12V VOLTAGE YES CHECK U201 PIN 29, 32, 35 SIGNAL LEVEL YES CHECK U203 PIN 1, 2, 3 SIGNAL LEVEL TROUBLE IN U203 NO 12V, 80V VOLTAGE YES CHECK CATHODE VIDEO TROUBLE IN U203 NO R216, R236, R256 LEVEL YES TROUBLE IN CRT 28 5. NO RASTER NO RASTER YES CHECK POWER SUPPLY NO B+ CHECK YES CHECK U301 PIN 1, PIN 2 H/V SYNC NO TROUBLE IN MCU U701 YES CHECK U701 PIN IS LOW NO YES CHECK U301 PIN 26, 3 H/V SYNC TROUBLE IN NO U301 YES CHECK T302 PIN 3 VOLTAGE 62V AT 31.5KHz, 180V AT 86KHz NO TROUBLE IN U301,Q312,D317,D111,R31A, R384, Q307, Q308 OR DEFLECTION YOKE NO TROUBLE IN Q315,Q316,T301,D320, D321,T302 NO TROUBLE IN Q323, Q331, R394, D314, T302, C328, U701 YES CHECK Q315 COLLECTOR ABOUT 1050Vp-p YES CHECK G1 VOLTAGE ABOUT -45~65V YES TROUBLE IN G2 VOLTAGE 29 6. TROUBLE IN H. V SYNC TROUBLE IN HOR. OR VER. SYNC YES CHECK CONNECTOR S701 (PIN6,7), SIGNAL TROUBLE IN SIGNAL CABLE NO YES CHECK U701(PIN 13,15) H/V SYNC. SIGNAL TROUBLE IN NO H/V SYNC LINE & Q701, Q702 YES CHECK U701(PIN 16,17) H/V SYNC. SIGNAL NO CHECK U701(PIN 40) VOLTAGE 5V? NO TROUBLE IN 5V LINE YES YES YES CHECK U701 (PIN 18, 19) FREQ.8MHz CHECK U301(PIN 1, 2) NO TROUBLE IN H.V SIGNAL LINE R301, R302, C301, C302 YES TROUBLE IN U301 30 NO TROUBLE IN X701, U701 7. PINCUSHION POOR PINCUSHION POOR YES PARABOLA WAVE CHECK Q309, Q311, Q332,Q341,Q342,C350 YES NO CHECK U301 PIN 24 CHECK C350, Q332, YES Q314,Q342,R332, R330, PARABOLA R32A,R32C,R30Y,32T NO TROUBLE IN U301 31 8. FOCUS POOR FOCUS POOR YES CHECK T302 12PIN H-DYNAMIC PARABOLA WAVEFORM 500Vpp, V-DYNAMIC PARABOLA WAVEFORM 180Vpp YES ADJUST T302 STATIC FOCUS VR AND DYNAMIC FOCUS VR NO NO CHECK T303 H AND V PARABOLA WAVEFORM NO V-PARABOLA TROUBLE IN T303, Q305, R360, R359, R331, R32G, R329, R330, R332,R32H,C320,C324, YES TROUBLE IN T801 YES TROUBLE IN Q302, Q338, Q304, Q303 R327, R363, R326 NO H-PARABOLA CHECK C323 H-PARABOLA WAVEFORM 50Vpp NO CHECK U301 10PIN FOCUS; Q302 BASE H-PARABOLA 4-Vpp NO GO TO FACTORY MODE, CHOICE H-FOCUS ICON, ADJUST TO 70~100%, CHECK U301 10PIN FOCUS 4Vpp NO TROUBLE IN U301 32 1. CHECK STATIC FOCUS AND DYNAMIC FOCUS VR LINE TO CRT SOCKET 2. CRT SOCKET OR CRT POOR N9702 Theory of circuit operation This monitor contains the following blocks Page 1. Power Supply ............................................................................................................................ 34 2. Video Circuit & OSD ................................................................................................................... 34 3. Micro Controller System ............................................................................................................. 34 4. Vertical Deflection ...................................................................................................................... 35 5. Horizontal Deflection .................................................................................................................. 35 6. FBT Secondary & Dynamic Focus ............................................................................................... 36 33 1. Power Supply (a) The filter network consists of L104, C101, C107, L101, L102, C103 and C104. The main function of this filter circuit is to eliminate the noise that is produced from monitor itself. (b) T101 is an energy converter which transfers the energy from primary winding to secondary load. R104, C112 and D105 are the snubber circuit and they function to absorb the spike to protect Q101. (c) U101 is a pulse width modulation IC which supplies the drive pulse to Q101. The sync pulse is got from FBT secondary to ensure the power supply and horizontal deflection are synchronized. (d) D110, D111, D112, D113, D114 are output rectifier diodes which are filtered by C119, C120, C121, C122 and C143. The output voltage will supply and control all the deflection circuit. (e) DC to DC step-up PWM is output from U301 pin28. This waveform through Q307 and Q308 to drive the Q312. This pulse width is varied with horizontal frequency, and then the DC voltage is difference of FBT pin3. 2. Video Circuit & OSD The video amplifier system is consist of the Pre-Amplifier, the Video-Power-Amplifier, and the cutoffVoltage-Adjusting circuit. (a) The U201 (M52743BSP) is a three channel video pre-amplifier IC, that controlled by MCU IIC bus for the features of contrast, output DC level, 3 SUB gain controls (R-Gain, G-Gain, B-Gain)and 3 D/A output pin . (b) U201 PIN 19 need a positive pulse for clamping and PIN 27 also need a positive pulse for blanking. (c) The OSD mixer processes are on pin 4, 9, 13, and the OSD Blk input on pin 1. (d) The Video-Power-Amplifier U203 (LM2435) is a three channel hybrid IC which functions as a cascade type transistor amplifier to reach the high bandwidth performance. (e) The Cutoff- Adjusting circuit is consist of Q211, Q212, Q231, Q232, Q251 and Q252 to provide the function of background white-balance. (f) The U202 (MTV021-38) is a OSD generator outputs the R. G. B. and FBLK signals that MCU shows the monitor’s status and the user adjusting indications. This IC is synchronized by horizontal and vertical sync input on pin 5 and pin 10. 3. Micro Controller System (a) The MCU U701 (MTV112) provides the following functions: (1) Output 10 PWM to adjust the voltage controlled functions such as H-SIZE, BRIGHTNESS, ROTATION. (2) When MCU detected the power saving signal, two outputs pin 26 and pin27 will change the Hi/Lo state to control the power saving circuit. (3) There has 3 outputs (SW1~SW3) to control the H-SIZE, when MCU detected the different sync, the SW1~SW3 will change its Hi/Lo state. (4) There still has 4 CS outputs and HF/S used to control the S-correction capacitor for horizontal deflection stage. (5) Pin 16 and pin 17 provides the always positive polarity H-SYNC and V-SYNC. SW1 SW2 SW3 40.0k<=fH<53.0k 53.0k<=fH<63.0k 63.0k<=fH<70.0k 70.0k<=fH<86.5k 86.5k>=fH fH<40.0k 34 Mode State Input Output Sync User Factory Mode Sync ON Pulses Pulses Pulse Pulse Stand By No pulses Pulses Factory PS CS Depend on fH Suspend Pulses No pulses PMS_OFF No pulses No pulses ON Pulses Pulses Stand By No pulses Pulses Suspend Pulses No pulses PMS_OFF No pulses No pulses State Pulses Pulses Input Depend on fH Output Sync User Mute Sync Rotation SW DAC ON Pulses Pulses Pulse Pulse Adj. data Depend on fH Stand By No pulses Pulses 107/255 Suspend Pulses No pulses 107/255 PMS_OFF No pulses No pulses 0/255 ON Pulses Pulses Stand By No pulses Pulses Suspend Pulses No pulses PMS_OFF No pulses No pulses Pulses Pulses Adj. data Depend on fH Adj. data Adj. data Adj. data (b) The U702 is an EEPROM IC which stores the parameters of each mode and the user adjusting result and also DDC data. It is controlled by IIC bus from MCU. 4. Vertical Deflection (a) Vertical deflection Saw-tooth waveform is provided by U301, pin 23, and amplified by U401 TDA8172. (b) A voltage multiplier connected to pin 3 and pin 6, consists of D402, C409 to avoid flyback scanning line appeared during the vertical flyback period. (c) U301 (TDA9111) pin 21 provides a DC level as a V-Position control voltage. (d) U401 pin 5 is output to drive vertical yoke. 5. Horizontal Deflection (a) U301 is a horizontal signal processing IC. Horizontal Driver signal is output from pin 26 of U301 TDA9111 and through Q333, Q334 to drive Q316 and T301. (b) T301 is an on/off type driver transformer. It functions to convert primary energy to secondary, and drive the horizontal output transistor Q315, R369 and C363 are the snubber. (c) Horizontal linearity and Cs circuit: (1) Horizontal linearity and Cs is changed by RL301,RL301 can change Horizontal Tr(C337),Linear(L302) and Cs(C336).It control by HF/S from U701 pin 30 35 (2) C344 is the Cs capacitor, and Q324 controls C345, Q326 controls C347, Q325 controls C346, Q327 controls C348. The U701 pin 1, 2, 3, 4 controls the Q324, Q326, Q325 and Q327 respectively. So different frequency has different combination to meet the requirement. Cs Table By Frequency CS1 CS2 CS3 CS4 fH < 30K 30K < fH < 34K 34K < fH < 37K 37K < fH < 46K 46K < fH < 53K 53K < fH < 63K 63K < fH < 68K 68K < fH < 75K 75K < fH < 85K 85K < fH < 86.5K 86.5K < fH 6. FBT Secondary & Dynamic Focus (a) (b) (c) (d) (e) Focus and screen voltage are come from FBT bleeder. G1 bias is controlled through R399, R30F, VR304, R30B and Q323. Q309 is controlled by MCU pin 31 Mute2, and it will blank the picture during mode change. Q401 is the blanking buffer to G1 to blank the retrace line of picture. Q339, Q340, D302,ZD301,D326,R322 and R318 are the x-ray protection circuit. Once the HV rises abnormally, U301 win shut down itself, all the horizontal deflection is stopped by then. (f) Dynamic Focus: (1) H-Focus: U301 pin 10 outputs a parabolic waveform and through Q302 into Q338 to get a reverse amplified waveform. This waveform is through the SEPP Q303 and Q304, as a current gain then input into T303. (2) V-Focus: U401 pin 5 output waveform through R329, C322, R32G and C324 to get a parabolic waveform. This waveform is amplified by Q305 and input into T303. (3) H-Focus and V-Focus are into T303 to get a combined waveform that will input to FBT. 36 H ADJ R,G,B R,G,B OSD/R,G,B,FB VF R,G,B X-RAY POTECT Q339,340 HOT T302 H-BLK Q273 R,G,B,/CUT OFF VIDEO PACK U203 OSD U202 RASTER CENTER Q313,314 DYNAMIC Q304, FOCUS Q305,303, Q302,338 H-O/P Q315 ABL Q272 VIDEO PRE-AMP U201 H-DRIVER Q316 76V,12V, 6.3V DC RESTORE Q211,212,231, 232,251,252, BRIT Q323,329, Q331 G1 ABL HBLK VERTICAL O/P VF U401 G1 76V MCU U701 HV E/W Q309,311 CORRECTION H-S H-S ISCL CS1~4 H-LINEAR Q322 SW1~3, CS-SELECT Q324~7 HF/S POWER SAVING Q114, Q115,116,104,105,112 B+ STEP-UP Q312,307,308 CLP ST CLP H,V BUFFER Q701,702 EEPROM U702 H,V OSC U301 40V ST HSCL,HSDA,PC/5V,PC/#5 ROTATION Q601,602 DEGAUSS Q108,110 PFC U103 AC I/P BRIT ,DEG,TILT, PS1, PS2,MUTE,ST, HS,CS1~4,HF/S,CLP, SW1~3,ISCL,ISDA 76V,15V,6.3V 37 HBLK 6.3V 12V GND HBLK ISCL ISDA ISCL ISDA POWER SUPPLY U101,U102,T101, BD101,Q101 MUTE BRIT ISDA VF ABL PS1, PS2 TILT DEG
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