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Mitsubishi Diamond Plus 93SB Service Manual Download Page 76

6-1 

TROUBLE SHOOTING 

TABLE OF CONTENTS 

 

Refer to User’s Manual trouble shooting section before using this chart. 

 

 

Page 

1.  NO OPERATION, POWER LED FLASH .......................................................................  6-2 

2.  NO OPERATION, POWER LED OFF ...........................................................................  6-3 

3.  VIDEO NOISE, NO SYNCHRONOUS  ..........................................................................   6-4 

4.  NO VIDEO .....................................................................................................................  6-5 

5.  NO RASTER .................................................................................................................  6-6 

6.  H. V. SYNC TROUBLE ..................................................................................................  6-8 

7.  POOR FOCUS ..............................................................................................................  6-9 

8.  POOR HORIZONTAL LINEARITY ..............................................................................  6-10 

 

 

 

Summary of Contents for Diamond Plus 93SB

Page 1: ...PART NO 599910598 COLOR MONITOR Diamond Plus 93SB MODEL DPlus 93SB B 200207 08109716 SERVICE MANUAL NEC MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION JUNE 2002...

Page 2: ...ected only to a properly grounded AC outlet This equipment utilized a micro gap power switch Turn off the set by first pushing the front panel power switch Next remove the power cord from the AC outle...

Page 3: ...and improper contacts may occur when wires of the connector are led 7 Use a proper screwdriver If you use screwdriver that does not fit you may damage the screws 8 X radiation precaution This product...

Page 4: ...SER S MANUAL 1 1 SERIAL NUMBER INFORMATION 2 1 DISASSEMBLY 3 1 ADJUSTMENT PROCEDURES 4 1 INSPECTION 5 1 TROUBLE SHOOTING 6 1 CIRCUIT DESCRIPTION 7 1 REPLACEMENT PARTS LIST 8 1 BLOCK DIAGRAMS 9 1 SCHEM...

Page 5: ...1 1 User s Manual 1 B Version User s Manual...

Page 6: ...AR Partner NEC Mitsubishi Electronics Display of America Inc has determined that this product meets the ENERGYSTAR guidelines for energy efficiency The ENERGYSTAR emblem does not represent EPA endorse...

Page 7: ...tion This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications Howev...

Page 8: ...d Plus 93SB monitor box should contain the following Diamond Pro 750 SB Diamond Plus 93SB Monitor with tilt swivel base Power Cord Captive Signal Cable User s Manual CD ROM with Setup Software complet...

Page 9: ...ond Pro 750SB Diamond Plus 93SB Macintosh cable adapter not included to the monitor connector on the Macintosh Figure B 1 Attach the 15 pin mini D SUB end of the captive signal cable to the Diamond Pr...

Page 10: ...1 6 Quick Start continued 6 User s Manual Figure C 1 Power Outlet Power Cord Power Button Figure D 1...

Page 11: ...s a e r c n i T C E L E S E D O M B S s e h c t i w s D S O t u o h t i W F F O N O e d o M t h g i r B r e p u S u n e m b u s s r e t n e D S O h t i W n o i t c n u f o n s a H T E S E R n i h t i...

Page 12: ...eases or increases the bottom of the screen to be the same as the top Rotate raster rotation Rotates the entire display clockwise or counterclockwise Corner Correction Allows you to adjust the geometr...

Page 13: ...wn simulta neously IPM System Off Mode Enable The IPM System works normally and all stages of energy savings are utilized Disable The Off Mode of the IPM System is not used NOTE For standard systems a...

Page 14: ...power cord is not supplied with this monitor please contact your supplier Cleaning Your Monitor A special coating is provided on the glass CRT surface of this monitor to reduce a reflection and stati...

Page 15: ...ution or glass cleaner to minimize dust Adjust the monitor s brightness and contrast controls to enhance readability Use a document holder placed close to the screen Position whatever you are looking...

Page 16: ...e u q e r f l a c i t r e v z H 0 6 1 o t 0 6 0 8 4 x 0 4 6 z H 6 4 1 o t 0 5 0 0 6 x 0 0 8 z H 1 4 1 o t 0 5 4 2 6 x 2 3 8 z H 6 1 1 o t 0 5 8 6 7 x 4 2 0 1 z H 3 0 1 o t 0 5 0 7 8 x 2 5 1 1 z H 9 8...

Page 17: ...e u q e r f l a c i t r e v z H 0 6 1 o t 0 6 0 8 4 x 0 4 6 z H 6 4 1 o t 0 5 0 0 6 x 0 0 8 z H 1 4 1 o t 0 5 4 2 6 x 2 3 8 z H 6 1 1 o t 0 5 8 6 7 x 4 2 0 1 z H 3 0 1 o t 0 5 0 7 8 x 2 5 1 1 z H 9 8...

Page 18: ...h other sRGB enabled hardware and software applications On Screen Manager OSM Controls Allows you to quickly and easily adjust all elements of your screen image via simple to use on screen menus ErgoD...

Page 19: ...s Control is used a second time when not switching between modes Picture bounces or a wavy pattern is present in the picture Move electrical devices that may be causing electrical interference away fr...

Page 20: ...the TCO The Swedish Confederation of Professional Employees Svenska Naturskyddsforeningen The Swedish Society for Nature Conservation and Statens Energimyndighet The Swedish National EnergyAdministrat...

Page 21: ...tem and is toxic in high doses TCO 99 requirement states that batteries may not contain any Mercury It also demands that no mercury is present in any of the electrical or electronics components associ...

Page 22: ...g g g g g g g g Manufactured Year Last digit Manufactured Month January to September 1 to 9 October X November Y December Z Factory Code NPG China Factory A B R ver Y Destination Code USA A Europe B A...

Page 23: ...harge the CRT anode by shorting it to ground before removing anode cap Revolving Stand ASSY 1 Turn the monitor CRT face down on a clean static free surface to prevent scratching CRT face 2 Remove the...

Page 24: ...ove the nine terminals and desolder the five points as shown 2 Disconnect the connectors S201 S202 S203 and GND 3 Desoldor the wires White wire Red wire and G2 S202 S201 S203 Red wire White wire GND G...

Page 25: ...CPIMS 4 10 15BF 3 Disconnect the connectors GND and S301 4 Remove the screw P 2CRBITS 4 8 15BF 5 Remove the Anode cap from CRT NOTE Carefully discharge the CRT anode by shorting it to ground before r...

Page 26: ...F and remove the Chassis Base from Cabinet Front ASSY 7 Remove the seven screws PL CPTS 3 8 15BF and two screws PL CPIMS 3 10 15BF 8 Remove the Main Board from Chassis Base Screws PL CPTS 4 16 15BF Sc...

Page 27: ...est 4 5 7 H V Adjustment 4 5 8 H Raster Center Adjustment 4 5 9 Preset Adjustment 4 5 10 G2 Voltage Adjustment 4 5 11 White Balance Adjustment 4 6 12 Focus Adjustment 4 8 13 Purity Adjustment 4 8 14 C...

Page 28: ...3 2KHz 85Hz 5 800 600 75 46 8KHz 75Hz 6 MACII 49K 49 7KHz 75Hz 7 800 600 85 53 6KHz 85Hz 8 1024 768 75 60 0KHz 75Hz 9 1280 1024 60 64 0KHz 60Hz 10 1024 768 85 68 6KHz 85Hz 11 1280 1024 75 79 9KHz 75Hz...

Page 29: ...TRAST Brightness Contrast TAB 2 POSITION SIZE Left Right H Position Down Up V Position Narrow Wide H Size Short Tall V Size VG Vertical GAIN Vertical Sub Size TAB 3 COLOR ADJUST 1 9300K 2 8200K 3 7500...

Page 30: ...4 4 TAB 5 TOOLS 1 Moire canceller Linearity VER Linearity balance Convergence HOR Convergence VER TAB 6 TOOLS 2 TOOL 2 is as same as user mode TAB 7 INFORMATION DS Destination...

Page 31: ...gh voltage has 26kV 0 1kV 8 H Raster Center Adjustment A Mode No 13 B Pattern Crosshatch Reverse C Adjust the Brightness Control so that the background is visible D Adjust VR501 to make the raster mos...

Page 32: ...color Mode 9300 Adjust R Bias B Bias to make X 0 283 Y 0 297 with readjusting G Bias to keep the brightness between 3 4 0 7cd m2 1FL 0 2FL C 9300K 5000K MODE White Balance Adjustment 1 9300K Select c...

Page 33: ...st contrast to meet following spec sRGB x 313 0 010cd m2 y 329 0 010cd m2 Y 93 2cd m2 27FL E SB1 2 MODE White Balance Adjustment Select the color Mode SB1 2 MODE 1 Select the color mode SB1 Mode by Se...

Page 34: ...if vertical black line is not falling out I Adjust F2 VR if horizontal black line is not falling out J Use the video card Matrox G550 and receive Microsoft Excel Work sheet 1280 1024 85 Make sure tha...

Page 35: ...Areas outside of zone A within the rectangle of 356mmx266mm CH CV Within 0 30mm 15 Power Saving Function Inspection A Mode No 13 B Pattern Full white C Input Maximum rating voltage D Inspection 1 It s...

Page 36: ...gnal No 13 in step 1 3 Perform the adjust for above all signal in step 4 5 1 Rotation Adjustment 1 Receive signal 13 Cross hatch 2 Select the icon in OSM TAB 4 3 Make sure that the picture tilt meets...

Page 37: ...ght angles less than 90 0 5 degree 4 Side Pincushion Adjustment 1 Select the icon in OSM TAB 4 2 Make sure that the side pincushion distortion meets the following standards 5 Trapezoid Distortion Adju...

Page 38: ...Center of the screen C Brightness Preset D H moire Minimum E Refresh Notifier OFF F OSM turn off time 45 sec G IPM off mode Enable H Language English for A B C R Version Japanese for J Version I OSM L...

Page 39: ...will be magnetized 3 Degaussing method When switch on the degaussing probe keep distance between panel surface and degaussing probe more than 50cm Move the degaussing probe vertically facing to the pa...

Page 40: ...6 0 508 56 1 556 16 0 323 32 0 559 Sync Pulse dot 96 96 64 56 80 64 uS 3 18 3 813 2 032 1 556 1 616 1 117 Back dot 48 48 120 80 160 224 uS 1 91 1 907 3 810 2 222 3 232 3 910 Total H 449 525 500 509 62...

Page 41: ...uS 0 569 0 203 0 444 0 508 0 119 0 406 Sync Pulse dot 64 96 112 96 144 160 uS 1 138 1 219 1 037 1 016 1 067 1 016 Back dot 152 176 248 208 248 224 uS 2 702 2 235 2 296 2 201 1 873 1 422 Total H 631 80...

Page 42: ...0 2 12 0 320 0 636 Sync Pulse dot 192 136 128 64 128 108 uS 0 948 2 09 3 20 2 12 1 280 3 813 Back dot 304 160 188 96 144 54 uS 1 501 2 46 2 20 3 17 1 440 1 907 Total H 1250 806 628 525 915 449 mS 13 3...

Page 43: ...ditions 5 19 5 2 Picture Size and Position 5 19 5 3 Luminance Brightness 5 20 5 4 Color 5 21 5 5 Geometric Distortion 5 22 5 6 Linearity 5 23 5 7 Misconvergence 5 24 5 8 Focus 5 24 5 9 Halo 5 25 5 10...

Page 44: ...30kHz and 96kHz The manufacture assumes the responsibilities for the design and assembly of the power supply and deflection circuits and the integration of these components with the CRT yoke assembly...

Page 45: ...Parallelogram Trapezoid Rotation TopPin In Out BottomPin In Out Moire Canceler Horizontal Linearrity Vertical Vertical Balance Convergence Adjust H Convergence Adjust V Language select 6 E G F SP IT...

Page 46: ...And others DPlus73SB B DPlus73SB C DPlus73SB R UL C UL TUV GS PCBC Gost PSB CCIB CCEE EN55022 B EN55024 EN61000 3 2 EN61000 3 3 C tick PTB MPR III TCO 99 Energy Star TCO 99 TUV GS IS9241 3 IS9241 7 I...

Page 47: ...3 TCO 99 Requirements and test methods for environmental labeling of display CRT and Ecology 1 2 3 CE Marking EN60950 1992 AD1 AD2 AD3 AD4 AD11 or EN60950 2000 EN55022 1998 Class B EN55024 1998 IEC61...

Page 48: ...Phosphor Spacing 0 26mm Deflection Angle 90 degree Phosphor Type B22 Electron Gun Type PX DBF type Light Transmission at Center Approx Approx 43 5 Include Face plate coating Face plate AR film Anti r...

Page 49: ...Impedance 2 2k ohm to grand or more Signal Level Video signal 0 70V p p 5 Composite sync TTL level 2 5V Separate H V sync TTL level 2 5V 3 3 Video Performance Video Clock Frequency 235MHz Input signa...

Page 50: ...on 92W Input voltage 100 240VAC Signal No 12 1280x1024 85Hz All white Contrast Max Brightness Cut off SB Mode OFF H V size Preset Distortion color default position AC leakage current Except Japan 3 5m...

Page 51: ...degaussing at the user s discretion after the unit is operating The Monitor requires minimum of 15 minutes between manual degaussing operations 4 Functions 4 1 Display Part 4 1 1 Front Controls a POWE...

Page 52: ...5 10 4 1 2 OSM On Screen Manager Function 4 1 2 1 OSM Menu Tab 1 Tab 2 Tab 3 Tab 4...

Page 53: ...5 11 Tab 5 Tab 6 Tab 6 Language Tab 6 OSM Position Tab 6 OSM Turn off Tab 6 OSM Lock Tab 6 IPM OFF Mode...

Page 54: ...5 12 Tag6 Edge Lock Tag6 Hot Key Tab 6 Factory Preset Tab 7 URL indication Tab 7 Display Mode Tab 7 Monitor info...

Page 55: ...5 13 Tab 7 Refresh Notifier Refresh Notifier Item Reset Tab Reset Factory Preset...

Page 56: ...5 14 Others...

Page 57: ...elogram 0 100 Adjusted Yes Align Trapezoidal 0 100 Adjusted Yes Rotate 0 100 Adjusted Yes Top Top comer 0 100 Adjusted Yes Big Small Bottom Bottom comer 0 100 Adjusted Yes Big Small 5 Moire Canceler H...

Page 58: ...CMITSUBISHI COM Type J WWW NMV CO JP Display Mode FH Horizontal Frequency Polarity FV Vertical Frequency Polarity Monitor Info Model Name Serial Number Refresh Notifier OFF ON OFF Cursor move to Defau...

Page 59: ...ray NEC 8508 4 1 4 Connector Pin Assignment 1 Signal Input Connector mini D sub 15P pig tail cable Pin Signal 1 Red video 2 Green video 3 Blue video 4 Gnd 5 DDC Gnd 6 Red Gnd 7 Green Gnd 8 Blue Gnd 9...

Page 60: ...ignals See 19 Timing sheet of ADJUSTMENT PROCEDURES for detail timing parameters Signal No 2 to No 8 No 10 to No 13 No 16 to No 18 are adjustment Signals User presets 10 F I F O Preset Timing Discrimi...

Page 61: ...ance Meter Minolta CA100 or Equivalent If no description the test below are applied under the Basic Test Condition Unless specified the monitor is set at the factory default setting 5 2 Picture Size a...

Page 62: ...ss default position Adjust to 0 8 cd m2 at 2 15 gray 32 255 gray 1 Window pattern 200 cd m2 0 30 cd m2 at 9300K 8 M P C D SB Mode 2 Contrast Max Brightness default position Cut off Window pattern 240...

Page 63: ...3 B4 is as follows A B1 B2 B3 B4 A x ref y ref x x ref 0 015 y y ref 0 015 5 4 3 Color Tracking of Contrast control Window pattern H 33 V 33 X Xref 0 015 Y Yref 0 015 Color setting 9300K Contrast Cont...

Page 64: ...38kHz x 1 0 mm 5 5 3 Raster Rotation Tilt All Preset Signals a b 1 0 mm or 0 5 degree 0 5 degree a b Bezel 5 5 4 Pincushion All Preset Signals Top d1 1 5 mm Bottom b1 1 5 mm d1 b1 1 5 mm Left side a1...

Page 65: ...Signals S 50mm b a 0 5 mm S 50mm b a 0 01 x S mm 5 6 Linearity H 15 31 43k 12 43 55k 10 55k adjacent 6 Linearity V 10 adjacent 5 at preset timings With Green Crosshatch 17 lines horizontally by 13 li...

Page 66: ...236mm outside of the Zone A Use worst case horizontal vertical misconvergence between any two primary colors 5 8 Focus Focus Signal No 13 Contrast Max Brightness Cut off Resolution 1600 x 1280 75Hz Ch...

Page 67: ...ll Preset Signals Full White pattern Judgment 1 The total horizontal and vertical size of the picture shall not change more than 1 0mm when displaying a flat field and adjusting the brightness from 30...

Page 68: ...late appearances 6 1 2 Quality zone The screen quality area is divided into the following two quality zones Zone A Inside of the central rectangle of horizontal 360mm by vertical 270mm on the screen Z...

Page 69: ...Flaw Width mm Specification Length 0 16 Rejected 0 11 0 15 Less than 13mm 0 06 0 10 Less than 26mm 0 05 Unlimited c Other glass defect Flaw crack and chip must be visually noticeable See the limitati...

Page 70: ...contrast is weak extremely as stain and apply standard of 6 2 3 a Note 2 Do not recognize flaws which injures goods prices though it is not especially stipulated as for zone C b Opaque flaws ex Stain...

Page 71: ...Zone A Zone B Standard classified by zones 6 8 Total zone A zone B 10 Note 1 Acceptable interval shall be larger one in the case that defects have different interval Note 2 There is no standard regard...

Page 72: ...ams Required NPGV233 EXE DP93SB BAT DP93SB TXT 7 4 Inspection Procedures a Factory Mode power on key key b Copy the above mentioned programs in an adequate directory c Set up the MO DOS mode DOS Promp...

Page 73: ...serial number begin to be written in i Display MONITOR INFO of the OSM and confirm that the model name and serial number have been correctly written j Press the F2 key to start the inspection of DDC2...

Page 74: ...5 1B 78 EB 7A 68 A0 56 47 99 26 20 12 48 4C FF FF 80 31 59 45 59 61 59 71 4F 81 59 30 81 99 A9 4F C1 45 86 3D 00 C0 51 00 30 40 40 A0 40 13 00 64 0A 11 00 00 1E 00 00 00 FD 00 32 A0 1E 50 60 17 00 0A...

Page 75: ...3 0 023 1 0 578 25 11 093 480 7 MAC832 624 57 283 49 725 74 550 20 111 1152 1 117 64 0 559 32 3 910 224 14 524 832 13 414 667 0 060 3 0 020 1 0 784 39 12 549 624 8 VESA 800 600 85 56 250 53 674 85 061...

Page 76: ...l trouble shooting section before using this chart Page 1 NO OPERATION POWER LED FLASH 6 2 2 NO OPERATION POWER LED OFF 6 3 3 VIDEO NOISE NO SYNCHRONOUS 6 4 4 NO VIDEO 6 5 5 NO RASTER 6 6 6 H V SYNC T...

Page 77: ...NEGATIVE CONNECT TO U501 pin 7 2 SCOPE SET AT 10V DIV 10US DIV PROBE CONNECT TO Q319 GATE AND U501 pin 6 POWER LED FLASH CHECK U501 U501 PIN6 PULSE O P POWER SW TURN OFF FAILURE U501 Q504 CHECK U501...

Page 78: ...ITIVE CONNECT TO C111 NEGATIVE CONNECT TO C107 2 SCOPE SET AT 10V DIV 10US DIV PROBE CONNECT TO Q101 GATE AND C107 POWER SW TURN OFF CHECK F101 CHECK Q101 Q102 r121 CHECK U101 U101 PIN6 PULSE O P POWE...

Page 79: ...FREQUENCY l501 SYNC TO GND D116 TO GND CHECK Q319 G S FREQUENCY SYNCRONIZE WITH H SYNC CHECK HORIZONTAL FREQUENCY C359 TO GND CHECK U501 NORMAL OPERATION CHECK Q101 G S FREQUENCY SYNCRONIZE WITH H SY...

Page 80: ...CK U201 PIN 18 19 20 SIGNAL LEVEL PROBLEM IN U201 CLAMP PIN 23 U201 12V VOLTAGE YES CHECK U201 PIN 6 7 9 SIGNAL LEVEL CHECK CATHODE VIDEO LEVEL PROBLEM IN CRT YES YES PROBLEM IN R255 R235 R215 NO PROB...

Page 81: ...01 YES YES YES NO NO CHECK U701 PIN 35 PIN 2 IS LOW YES NO CHECK U501 PIN 6 8 BDRY HDRY TROUBLE IN U501 YES NO CHECK ISCL ISDC YES CHECK Q504 DRAIN ABOUT 180Vp p fH 93KHz TROUBLE IN D505 T501 Q504 R52...

Page 82: ...p p TROUBLE IN C331 D316 C332 YES NO CHECK Q305 DRAIN PULSE 280Vp p YES NO CHECK FBT 2PIN 80V NO TROUBLE IN Q309 R301 D151 YES TROUBLE IN U301 Q303 Q305 CHECK G1 VOLTAGE ABOUT 20 5V TROUBLE IN Q307 ZD...

Page 83: ...N 39 40 H V SYNC SIGNAL TROUBLE IN H V SYNC LINE Q701 Q702 CHECK U701 PIN 32 33 H V SYNC SIGNAL CHECK U701 PIN 5 VOLTAGE 5V CHECK U502 PIN 14 15 CHECK U701 PIN 7 8 FREQ12MHz TROUBLE IN U501 TROUBLE IN...

Page 84: ...YNAMIC FOCUS VR NO 1 CHECK STATIC FOCUS AND DYNAMIC FOCUS VR LINE TO CRT SOCKET 2 CRT SOCKET OR CRT POOR CHECK T302 H AND V PARABOLA WAVEFORM NO H PARABOLA TROUBLE IN T302 C325 R341 T301 NO H PARABOLA...

Page 85: ...6 10 8 POOR HORIZONTAL LINEARITY POOR HORIZONTAL LINEARITY NO TROUBLE T303 Q310...

Page 86: ...7 4 1 9 Feedback Circuit 7 4 1 10 Snubber Circuit 7 4 1 11 Power Management Function 7 4 1 12 Harmonic Coil Changeover Circuit 7 4 2 MCU 7 5 2 1 Frequency Specifications 7 5 2 2 System Architecture 7...

Page 87: ...age Circuit 7 14 5 Dynamic Focus Circuit 7 14 6 Safety Protection Circuit and X ray Protection Circuit 7 15 6 1 X ray Protection Circuit 7 15 6 2 Beam Current Protection Circuit 7 15 6 3 Primary Leaka...

Page 88: ...he gate of Q101 a current flows from the positive side to the negative side of C107 through the primary winding of transformer T101 Pin 6 and Pin 4 and Q101 D S By this operation energy is stored in T...

Page 89: ...on circuit and the video circuit At that time LED101 changes its color from green to orange 1 When the power switch is kept in the ON position the MPU detects both the horizontal and vertical sync sig...

Page 90: ...ration Three pins for beam current high voltage and X rays protector detection 8 External 5V detection input One pin 2 4 Outputs 1 Degaussing Made to be active for a predetermined time period during d...

Page 91: ...H OUT 14 Protector input HVOLT IN 34 Not used TR 15 Model changeover input OPTION1 35 MUTE output MUTE 16 CS control output CS1 36 Rotation control output ROT 17 CS control output CS2 37 Model change...

Page 92: ...he B output drive pulses In addition using the control signals from the microcomputer IC701 this IC is used to control the trapezoidal distortion the pin balance and the horizontal position There are...

Page 93: ...X is generated when fh 31kHz and another output of about 110 to 130V is generated when fh 93kHz To produce this circuit input the drive pulse output from U501 TDA4856 Pin 6 B_DRIV and the 26V power is...

Page 94: ...tifying voltage of D317 and the S correction capacitor changes Then the horizontal width also changes The vertical parabolic waveform is generated within IC501 and the resultant output is generated at...

Page 95: ...isting of the resonance capacitor C332 and H_DY the linear coil and the S capacitor The pulse width of this resonance pulse is mainly dependent on the inductance value of the deflection yoke H_DY and...

Page 96: ...ntal linearity The S capacitor C517 correction circuit is enabled when all the signals are received For the other S capacitors C334 C336 C338 and C340 are turned ON and OFF at each frequency by the FE...

Page 97: ...tment of VR501 The raster centering circuit uses about 5VDC generated by the rectifier circuit of D507 and C518 using the power from the secondary winding of T501 in the horizontal deflection source c...

Page 98: ...ives the DY V through the use of the U401 TDA8172 driven by 14V and 12V of the power supply The vertical deflection circuit is composed of the following blocks 1 Saw tooth wave generator and waveform...

Page 99: ...ge Circuit The high voltage circuit uses the PWM control system to regulate the ON OFF time of the high voltage generator FET U301 is the IC that performs the PWM control The pulse voltage generated i...

Page 100: ...his circuit is maintained until the AC power supply is turned OFF 6 2 Beam Current protection Circuit The protection circuit operates when the current flowing in the high voltage generator winding of...

Page 101: ...utput from the oscillator IC U501 and is input to U201 Pin 23 7 1 3 Horizontal Blanking The collector pulses of Q314 are divided by the combination of C331 and C332 The obtained pulses are used as the...

Page 102: ...IAS G_BIAS R_BIAS 7 2 Video Bias Control The video signals are amplified at the U204 The bias voltages output from U201 are amplified in the bias circuit to control the Brightness The brightness of th...

Page 103: ...at the time of signal mode changeover and power ON OFF is carried out by controlling the G1 voltage This voltage control is actually effected by Q307 that makes the switching of the blanking pulse out...

Page 104: ...he SB MODE1 that is intended to achieve a sharp display of photos or the like the black level is lowered than usual to strain the black tone so that the brightness can be raised by increasing the vide...

Page 105: ...56 79PQ0056 TR NPN 2SC945 TO 92 T Q132 EAA09456 79PQ0056 TR NPN 2SC945 TO 92 T Q151 EB307720 79PQ1246 TR PNP KSB772 TO 126 Q152 80014321 79PQ2529 TR NPN KRC102M TO 92 T Q153 EA306691 79PQ1522 TR NPN H...

Page 106: ...Q0056 TR NPN 2SC945 TO 92 T Q617 EAA12133 79PQ0057 TR NPN 2SC1213AC TO 92 T Q618 EBA06733 79PQ1524 TR PNP 2SA673AC TO 92 T Q701 EAA23690 79PQ0059 TR NPN PH2369 TO 92 T Q702 EAA09456 79PQ0056 TR NPN 2S...

Page 107: ...3 DIODE T 1 2W 1SS83 D253 80000451 79PQ0043 DIODE T 1 2W 1SS83 D254 80000451 79PQ0043 DIODE T 1 2W 1SS83 D271 EJ044148 79PQ0065 DIODE T 1N4148 D301 EJ044148 79PQ0065 DIODE T 1N4148 D302 EJ044148 79PQ0...

Page 108: ...EKA00607 79PQ0292 ZEN DIODE 1 2W T 6C2 ZD705 EKA00607 79PQ0292 ZEN DIODE 1 2W T 6C2 ZD706 EKA00607 79PQ0292 ZEN DIODE 1 2W T 6C2 ZD712 EKA0150B 79PQ2553 ZEN DIODE 1 2W T 15 2 ZD713 EKA0150B 79PQ2553 Z...

Page 109: ...SA SS 212DM T501 80016801 79PQ2548 CHOKE COIL 45UH N1901 ELECTRICAL PARTS MISCELLANEOUS PARTS B101 HC006003 79PQ1595 BEAD 3 5X8 T B102 HC005003 79PQ1594 BEAD 3 5X8 T WBRH 2 5X8X0 B103 HC005003 79PQ159...

Page 110: ...00761 79PQ2517 POLYLON T RESISTORS R101 FA330684 79PQ0156 CARBON 1 2W T 5 680K R103 FA330333 79PQ1039 CARBON 1 2W T 5 33K R104 FA240564 79PQ0328 CARBON 1 4W T 5 560K R105 FA240564 79PQ0328 CARBON 1 4W...

Page 111: ...9 79PQ0147 CARBON 1 2W T 5 1OHM R165 FA330102 79PQ0146 CARBON 1 2W T 5 1K R181 FA240103 79PQ0126 CARBON 1 4W T 5 10K R182 FA240473 79PQ0138 CARBON 1 4W 5 47KOHM R201 FA040562 79PQ0739 CARBON 1 8W T 5...

Page 112: ...0OHM R285 FA040103 79PQ0083 CARBON 1 8W T 5 10K R286 FA040123 79PQ0087 CARBON 1 8W T 5 12K R287 FA040102 79PQ0082 CARBON 1 8W T 5 1K R289 FA040102 79PQ0082 CARBON 1 8W T 5 1K R301 FB470338 79PQ1712 MO...

Page 113: ...PQ2555 CARBON 1 2W T 5 27H R348 FB710518 79PQ2571 MOF 3W M A 5 0 51H R349 FB241003 79PQ1047 METAL 1 4W T 1 100K R350 FB245601 79PQ1058 METAL 1 4W T 1 5 6K R351 FA040472 79PQ0114 CARBON 1 8W T 5 4 7K R...

Page 114: ...R516 FA040333 79PQ0106 CARBON 1 8W T 5 33K R517 FA040512 79PQ1531 CARBON 1 8W T 5 5 1K R518 FA040222 79PQ0095 CARBON 1 8W T 5 2 2K R519 FA040103 79PQ0083 CARBON 1 8W T 5 10K R520 FA040472 79PQ0114 CAR...

Page 115: ...PQ0081 CARBON 1 8W T 5 100OHM R722 FA040472 79PQ0114 CARBON 1 8W T 5 4 7K R723 FA040101 79PQ0081 CARBON 1 8W T 5 100OHM R724 FB271002 79PQ1862 METAL 1 4W M T 1 10K R725 FB277500 79PQ2565 METAL 1 4W M...

Page 116: ...GF233262 79PQ0256 MEF CAP BOX 0 0033U 63VJ C120 GA347755 79PQ2578 ELECT 85OC T 470U 50V M C121 GF210452 79PQ0752 MEF CAP BOX 0 1U 50V J C131 GA3105E5 79PQ2576 ELECT 85OC T 1U 400V M C132 GA310555 79P...

Page 117: ...C SL T 180P 50V J C280 GB7102F3 79PQ0234 CC Y5P B T 1000P 500V K C282 GA310555 79PQ0196 ELECT 85 C T 1U 50V M C283 GB210458 79PQ0228 CERAMIC Y5V T 0 1U 50V Z C284 GB7102F3 79PQ0234 CC Y5P B T 1000P 50...

Page 118: ...208 ELECT 85 C T 4 7U 50V M C338 GFB15582 79PQ2588 PLASTIC MPP A 1 5U 250V J C339 GB210458 79PQ0228 CERAMIC Y5V T 0 1U 50V Z C340 GFB10482 79PQ1209 PLASTIC MPP A 0 10U 250VJ C343 GA310655 79PQ0198 ELE...

Page 119: ...V M C611 GB733153 79PQ1580 CERAMIC Y5P B T 330P 50V C612 GA310655 79PQ0198 ELECT 85 C T 10U 50V M C613 GB733153 79PQ1580 CERAMIC Y5P B T 330P 50V C614 GA310655 79PQ0198 ELECT 85 C T 10U 50V M C615 GB2...

Page 120: ...267 R B G LM2480 CUT OFF SMPS SYSTEM ARCHITECTURE MCU E PROM DDC MTV212 24C08 H HV V HORIZONTAL AND VERTICAL SYNC PROCESSOR TDA 4856 H V EW OUT HOUT V GEOMETRY VERT OUT TDA 8172 HOR DEFLECT STAGE DC D...

Page 121: ...1 2 3 4 5 11 7 8 9 6 12 13 10 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 10 SCHEMATIC DIAGRAM MAIN PWB ASSY FE991SB DPlus93SB 10 1...

Page 122: ......

Page 123: ...lus93SB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 H 4Vp p ON MODE 2Vp p 35us PMS MODE H 10Vp p 15Vp p V t 84V 27V 14V 14V 7V ON MODE 5V PMS MODE 5V0 p 47kHz 5V0 p 12MHz 5V0 p 12MHz 5V0 p H...

Page 124: ...23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 H 11V0 p 1V0 p H 40V0 p 15Vp p 50V0 p H H 50V0 p 24V0 p 890V0 p 50V0 p V V 2V0 p V 3Vp p 55Vp p V 11V0 p H 11V0 p H 350Vp p 7V0 p V 220V0 p V 160Vp p 54...

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