Iiyama Vision Master Pro 451 Service Manual Download Page 51

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DWG. TITLE : ASSY-PWB-MAIN

GROUP 10: HM903DT, 20: A902MT-v

REV. REF.NO.

PART

DESCRIPTION

PART NO.

PRICE REMARK

GROUP

GT-PIN

DIA2.36

452Z902A10

EYELET

679D022A20

RADIATOR

595D313A10

RADIATOR

OSH-2425/PR1724/790Z006-10

790Z006A10

RADIATOR

23*41*1.2

790Z016A20

RADIATOR

OSH-2054/2054-650-MP

790Z025A10

PWB-MAIN

210R101-01

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Summary of Contents for Vision Master Pro 451

Page 1: ...SERVICE MANUAL October 30 2000 710 1 Kitaowaribe Nagano shi 381 0014 JAPAN IIYAMA CORPORATION Copyright NO S1901E02 HM903DT A902MT v...

Page 2: ...Revision Record Rev Section Contents...

Page 3: ...UP ADJUSTMENTS SAFETY PRECAUTION 5 SERVICE PARTS LIST 6 EXPLODED VIEW 4 CIRCUIT DESCRIPTION 7 DIAGRAMS CONTENTS Page 57 65 66 68 1 15 16 17 18 19 30 31 56 i ii NOTICE The information in this document...

Page 4: ...e product and the AC power supply point while performing any service on some products when the primary circuit of the AC power supply is exposed 4 The high voltage applied to the picture tube must con...

Page 5: ...0W resistor paralleled by a 0 15uF AC type capacitor between an exposed metal part and a known good earth ground water pipe etc Measure the AC voltage across the resistor with the AC voltmeter Move th...

Page 6: ...tic force 1 2 3 4 5 6 7 1 Note This monitor should be checked and adjusted by connecting it to a signal generator then entering and running the timing charts both below and of Chapter 2 R 13 704 19 41...

Page 7: ...tor from RS connector to exit 2 In the adjustment menu select Function on the Main Menu and then select Language on the Sub Menu Follow the flow chart below and you are in the Factory Mode Turn OFF th...

Page 8: ...utton so that the Bottom right Top right Top left and Bottom left will be disabled 2 Degauss the entire screen with degausser while the Degauss is activated approx 6 seconds FACTORYMODE 1 Select CRT C...

Page 9: ...f high voltage is within 0 2kV when receiving MODE 1 and MODE 6 respectively Turn OFF the Power Switch and remove the high voltage probe WARNING VR501 HV ADJ has been carefully factory adjusted for ea...

Page 10: ...e horizontal oscillation frequency is within the specified range above Remove the frequency counter n 1 6 H BLANKING confirmation 1 2 3 4 5 Receive a cross hatch inverted signal of MODE 5 Minimize the...

Page 11: ...he MENU Button so that the automatic confirmation program starts Confirm that the back raster is not rolling or tearing at the top Confirm that no retrace line is over the picture 1 9 H CENT adjustmen...

Page 12: ...o the specified setting below Correct the Pincushion and Trapezoid distortion with the front buttons so that X of the right hand side figure is as follows X 0 5 mm 30mm when selecting the most remarka...

Page 13: ...ntrast is not within the specified range above repeat 4 to 7 The OSD disappears Press the MENU Button so that the OSD appears All adjustment data is stored when the OSD disappears Turn OFF the Remote...

Page 14: ...s displayed normally 1 18 SIGNAL SELECT confirmation 1 2 3 4 Receive a cross hatch inverted signal of MODE 5 Switch the signal input to VIDEO IN 1 and VIDEO IN 2 respectively Press the Input Select Bu...

Page 15: ...e horizontal center line sharpest at points L M and R DBF Para and DBF Phase should not be adjusted when focus at points L and M is optimum Repeat 2 to 5 until the focus is optimum Confirm no focus va...

Page 16: ...e Audio Connector and make sure the right and left speaker works normally 4 Turn the Volume Control and make sure the volume varies 5 ConnectAudio LR confirmation equipment between the Audio Connector...

Page 17: ...12 Fig 2 Fig 3 Fig 1 Double click here Generic USB Hub or Iiyama USB Hub...

Page 18: ...t full scan Apply the landing meter to TL top left TR top right BL bottom left and BR bottom right in the right hand side figure Confirm that H reading of the landing meter is within 20 at each point...

Page 19: ...ust the BOW MAGNET so as to straighten an arched horizontal line Note Must be careful not to misconverge vertical lines by this adjustment Performthe1 29 3 STATICCONVERGENCEadjustmentsoastoconverge th...

Page 20: ...TATE TAPE 890P306A10 Note Only for 800Z003A02 and 800Z003A03 1 2 3 15 1 2 Receive a red and blue cross hatch signal Adjust the specified YV a volume so that red and blue beams converge each other at t...

Page 21: ...8 1280 1024 1600 1200 1920 1440 fH kHz 31 469 43 269 53 674 68 677 91 146 106 250 128 520 fV Hz 59 940 85 008 85 061 84 997 85 024 85 000 85 000 Sync polarity H N N P P P P P V N N P P P P P Q 1 048 0...

Page 22: ...ontrol IC350 Vertical deflection output 24C08 IC203 M35047 057SP On screen display control IC920 IC901 STR G6551 Sub power control LM317T 6 3V regulator Heater voltage ON OFF control IC921 KIA431 5V o...

Page 23: ...V SYNC signal out H SYNC signal out Video clamper N C HM903DT andA902MT v switch Degauss control signal output H LIN 1 switching signal output E2 PROM SDA E2 PROM SCL UPC1888 PRF OSD DA SDA UPC1888 PR...

Page 24: ...rm from current is controlled to be in proportion with input voltage at pressor chopper circuit This circuit is prevented from being harmonic by compared with following waveforms Q The full wave recti...

Page 25: ...Q 80V line Supplied to the HIGH VOLTAGE OUTPUT T501 and the VIDEO OUTPUT IC IC202 and the CUT OFF IC IC204 as power source R 28V line Supplied to the HORIZONTAL DEFLECTION OUTPUT variable B voltage co...

Page 26: ...output voltage from the T901 secondary and controls the feedback current in PC901 photocoupler by fed back to 5 pin of IC951 OCP FB The T901 secondary provides the following DC voltages Q 8 5V line Su...

Page 27: ...nc signal from D SUB connector is set input condition of VIDEO IN 1 2 and sync signal by IC105 SW IC and input to pins 2 H HV IN 5 V IN and 3 SOG of IC101 Sync Processor The input H V sync signal is w...

Page 28: ...CT is auto sync system and adjusts the horizontal frequency automatically make the vertical sync signal input to pin 27 trigger In case that the AFC pulse is not input the output pulse from pin 17 is...

Page 29: ...on control parabolic wave output from pin 5 are input to pin 11 and then the output pulse of pin 14 controls the horizontal size and distortion as follows Q H size The output duty of pin 14 is varied...

Page 30: ...S1 Pin 6 LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH CS2 Pin 7 LOW HIGH LOW LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH HIGH CS3 Pin 9 LOW LOW LOW LOW HIGH LOW LOW HIGH HIGH HIGH HIGH HIGH CS4...

Page 31: ...Vp p by T503 and synthesized with V parabolic wave and then applied to pin 13 DF of T501 FBT 2 V DBF The parabolic wave of vertical period is output from pin 8 of IC350 VDFO and then amplified by Q520...

Page 32: ...video output signal Therefore it controls the FBT beam current ABL is activated entire white raster Approx 3 5VDC at pin 7 ABL is not activated window Approx 4 1VDC at pin 7 The parabolic waveform is...

Page 33: ...tput from pin 17 and the variable B control pulse output from pin 14 turn to LOW level 0V It makes the HORIZONTALDEFLECTION OUTPUT and the HIGH VOLTAGE OUTPUT circuits stop The signal that the X RAY P...

Page 34: ...of IC104 and then sent to IC301 by I2 C BUS The information is output from pins 10 11 12 and 13 of IC301 as pulse width modulation and vary the current in Landing correction coil TR TL BR BL by IC801...

Page 35: ...rom CN602 AUDIO IN is amplified by IC601 AUDIO AMP and output to Speaker and Headphone jack The VR voltage 0 1 2V from pin 9 of IC601 switch output of pins 6 10 11 and 12 of IC104 to HIGH and LOW to c...

Page 36: ...itical for safety Replace only with part number specified Abbreviations and Marks Page FAMILY TREE Contents 36 45 46 55 56 ASSY PWB MAIN ASSY PWB STAND SUB MATERIAL 34 35 ASSY MONITOR 33 ASSY PACKING...

Page 37: ...propylene Capacitor Multilayer Metallized Polyester Film Diode Zener Diode Transistor Photo Coupler Positive Thermistor Horizontal Drive Transformer Flyback Transformer Variable Resistor Switch Switch...

Page 38: ...TION PART NO PRICE REMARK 0 1 15 RATING PLATE 706Z071 01 1 0 17 RATING PLATE 706Z073 01 0 1 22 SERIAL LABEL 851T013 55 1 0 24 SERIAL LABEL 851T013 57 1 1 29 OPERATION MANUAL 870Z172 01 1 1 33 SIGNAL C...

Page 39: ...46LRY21X21 251Z062A03 13 13 69 SCREW STV3 6MC S 632Z121B06 11 11 70 SCREW BTV3 8MC S 631Z121B08 9 9 71 SCREW BTV SEMS W3 10MC S 631Z421B10 1 1 72 SCREW BTV SEMS W3 14MC S 631Z421B14 2 2 73 SCREW BTV4...

Page 40: ...LET 454Z012 01 1 1 120 THERMISTOR 103JT 025 00057 744Z006A10 2 2 121 SPEAKER NP 220 C057PA504 16 S57C16C 3 883Z011A01 10 10 122 RIVET PAD30M3HR CC 679Z002A01 3 3 125 SHIELD FINGER T10676 590Z028A01 1...

Page 41: ...C303 C E 25V 220M M 460Z221B43 1 1 C304 C C CHIP 25V F R1M Z 411Z104B44 1 1 C306 C C CHIP 25V F R1M Z 411Z104B44 1 1 C307 C E 25V 100M M 460Z101B43 1 1 C308 C C CHIP 25V F R1M Z 411Z104B44 1 1 C309 C...

Page 42: ...M 470Z101T43 1 1 C390 C E 25V 100M M 460Z101B43 1 1 C391 C E 25V 100M M 460Z101B43 1 1 C393 C MF 50V 1000P J 420Z102E13 1 1 C401 C C CHIP 25V F R1M Z 411Z104B44 1 1 C402 C E 25V 1000M M 470Z102G47 1...

Page 43: ...1 1 C802 C C CHIP 25V F R1M Z 411Z104B44 1 1 C803 C C CHIP 25V F R1M Z 411Z104B44 1 1 C804 C C CHIP 25V F R1M Z 411Z104B44 1 1 C805 C C CHIP 25V F R1M Z 411Z104B44 1 1 C806 C E NP 50V 10M M 462Z100B6...

Page 44: ...470Z102G47 1 1 C9A2 C C CHIP 50V B R1M K 411Z104C14 1 1 C9A4 C C CHIP 50V F R01M Z 411Z103B24 1 1 D307 D 1N4148 1SS133 1SS120 742Z001A21 1 1 D321 ZD MTZ J4 7B HZ5B1 742Z414A21 1 1 D322 ZD MTZ J4 7B H...

Page 45: ...1N4003 742Z019A31 1 1 D969 D S3L40 31DF4 HER305 742Z036A28 1 1 D971 D FML G12S D4L20U SF6L20U 742Z011A15 1 1 D972 D FML G12S D4L20U SF6L20U 742Z011A15 1 1 D973 D SF34 31DF2 742Z035A27 1 1 D974 D EG01...

Page 46: ...A15 1 1 Q504 TR 2SK2962 740Z467A13 1 1 Q505 TR CHIP KRC105S DTC123JKA RN1405 740Z665A14 1 1 Q506 TR CHIP KRA103 DTA124 RN2403 PDTA124 740Z661A34 1 1 Q507 TR CHIP BT1815 2SC2412 KTC3875 2PD601 740Z151A...

Page 47: ...M CHIP 1 10W 100 J 613Z101C24 1 1 R354 R M CHIP 1 10W 1R5K J 613Z152C24 1 1 R355 R M CHIP 1 10W 47K F 613Z473C54 1 1 R356 R M CHIP 1 10W 2R2K F 613Z222C54 1 1 R357 R M CHIP 1 10W 20K J 613Z203C24 1 1...

Page 48: ...0W 4R7K J 613Z472C24 1 1 R525 R C 1 4W 150K J 613Z154C11 1 1 R526 R M CHIP 1 10W 150 J 613Z151C24 1 1 R527 R M CHIP 1 10W 4R7K J 613Z472C24 1 1 R528 R C 1 4W 150K J 613Z154C11 1 1 R529 R M CHIP 1 10W...

Page 49: ...613Z569C11 1 1 R804 R M CHIP 1 10W 10K J 613Z103C24 1 1 R805 R M CHIP 1 10W 10K J 613Z103C24 1 1 R806 R M CHIP 1 10W 10K J 613Z103C24 1 1 R807 R C 1 4W 5R6 J 613Z569C11 1 1 R808 R M CHIP 1 10W 10K J...

Page 50: ...1 4W 15 J 614Z150A61 1 1 R9A3 R MB 2W 56K J 612Z563C37 1 1 R9A4 R MB 3W 22 J 612Z220C47 1 1 R9A5 R M CHIP 1 8W 2R2K J 613Z222C74 1 1 R9A6 R C 1 4W 10 J 613Z100C11 1 1 R9A7 R MB 2W 56K J 612Z563C37 1 1...

Page 51: ...ESCRIPTION PART NO PRICE REMARK GROUP 1 1 MP GT PIN DIA2 36 452Z902A10 34 34 EYELET 679D022A20 1 1 RADIATOR 595D313A10 2 2 RADIATOR OSH 2425 PR1724 790Z006 10 790Z006A10 2 2 RADIATOR 23 41 1 2 790Z016...

Page 52: ...H 22P J 410Z220B14 1 C116 C C CHIP 50V CH 22P J 410Z220B14 1 C117 C E 25V 100M M 460Z101B43 1 C118 C E 25V 100M M 460Z101B43 1 C119 C C CHIP 25V F R1M Z 411Z104B44 1 C121 C C CHIP 50V CH 22P J 410Z220...

Page 53: ...C CHIP 25V F R1M Z 411Z104B44 1 C226 C E 25V 100M M 470Z101T43 1 C227 C E 100V 220M M 470Z221G87 1 C228 C C 500V E R01M P Z 411Z103A07 1 C229 C C 500V E R01M P Z 411Z103A07 1 C230 C E 100V 10M M 470Z...

Page 54: ...T43 1 C613 C E 100V 1M M 460Z109B83 1 C615 C E NP 100V 1M M 462Z109B83 1 C616 C E NP 100V 1M M 462Z109B83 1 C619 C C CHIP 25V F R1M Z 411Z104B44 1 C623 C C CHIP 25V F R1M Z 411Z104B44 1 C624 C E 100V...

Page 55: ...24 1 D1G3 D CHIP HSM123 DAN217 1PS226 742Z017A24 1 D1G4 D CHIP HSM123 DAN217 1PS226 742Z017A24 1 D1R1 D CHIP HSM123 DAN217 1PS226 742Z017A24 1 D1R2 D CHIP HSM123 DAN217 1PS226 742Z017A24 1 D1R3 D CHIP...

Page 56: ...RRITE BEADS ZBF503 EXCEL 750Z906A13 1 L2B1 R M CHIP 1 10W ZERO 613Z999B24 1 L2B3 COIL CHOKE R22MH 750Z003A11 1 L2B4 R M CHIP 1 10W ZERO 613Z999B24 1 L2G1 R M CHIP 1 10W ZERO 613Z999B24 1 L2G3 COIL CHO...

Page 57: ...40Z151A34 1 Q202 TR CHIP BT1815 2SC2412 KTC3875 2PD601 740Z151A34 1 Q203 TR CHIP KRC103 DTC124 RN1403 PDTC124 740Z654A34 1 Q204 TR CHIP BT1815 2SC2412 KTC3875 2PD601 740Z151A34 1 Q602 TR CHIP BT1815 2...

Page 58: ...CHIP 1 10W 10K J 613Z103C24 1 R166 R C 1 4W 180 J 613Z181C11 1 R171 R M CHIP 1 10W 39K J 613Z393C24 1 R172 R M CHIP 1 10W 20K J 613Z203C24 1 R173 R M CHIP 1 10W 10K J 613Z103C24 1 R174 R M CHIP 1 10W...

Page 59: ...613Z102C24 1 R235 R M CHIP 1 10W 1K J 613Z102C24 1 R236 R M CHIP 1 10W 10K F 613Z103C54 1 R237 R M CHIP 1 10W 10K F 613Z103C54 1 R238 R M CHIP 1 10W 10K F 613Z103C54 1 R239 R M CHIP 1 10W 10K F 613Z10...

Page 60: ...1 10W 47K J 613Z473C24 1 R611 R M CHIP 1 10W 1K J 613Z102C24 1 R701 R M CHIP 1 10W 18 J 613Z180C24 1 R702 R M CHIP 1 10W 18 J 613Z180C24 1 R703 R M CHIP 1 10W 18 J 613Z180C24 1 R704 R M CHIP 1 10W 18...

Page 61: ...YP 201N 789Z014A41 1 SG2R1 NEON LAMP DSP 201M YP 201N 789Z014A41 1 T901 SWT 756Z017A10 1 TH150 THERMISTOR NTSA0XH103EN6A0 744Z004A13 1 TH901 THERMISTOR 10 744Z001A28 1 VR901 VR B 2K 620Z202A60 1 X101...

Page 62: ...RS3 X52 115A 1 090Z019A01 AV SOLDER ROSIN E 28RH60 B RS3 115A 1 090Z019A02 AW SOLDER ROSIN E 28RH60 B RS3 115A 1 090Z019A03 AX SOLDER ROSIN SE4 M952K 090Z030A02 AY SOLDER ROSIN H63A H63S BAR63 37 63EN...

Page 63: ...A PA N GOLF TO UR 40 53 53 33 35 34 63 64 62 29 58 52 52 59 L 70 2 15 17 43 49 47 48 Bottom face 57 57 24 22 6 EXPLODED VIEW Note The numbers in this exploded view are the same as the reference number...

Page 64: ...gf cm inASSY MONITOR 4 ASSY 1 ASSY MONITOR PWB CONT PWB STAND 5 6 2 55 90 69 69 98 SJ Lead SH Lead 85 70 38 40 41 121 121 108 L R 109 RED BLACK 79 PWB CONT D150 127 126 56 45 torque 5 7kgf cm 4 78 tor...

Page 65: ...ead Name C 113 C AC C B A E AD R L To PWB STAND To PWB MAIN CABLE TIES FERRITE CORE 5 2 torque 5 7kgf cm S2 From SPEAKER R L AD AD LEAD 25 mm max C907 K901 C LEAD C LED lens D150 72 71 71 71 50 96 95...

Page 66: ...1 A D NS C368 R335 59 59 59 82 86 62 60 Lead Wire C368 R335 To CRT G G1 V DY CT H DY B D AD DG MR MT MH From CRT CL1 M4 M3 a M1 CL2 To CL1 To CL2 From 61 To PWB VIDEO 2 2 100 131 SC Lead 15 20 PWB VID...

Page 67: ...ASSY 4 ASSY MONITOR 115 55 5 A A 5 L 40x2 4 4 2 2 83 112 torque 27 1kgf cm 125 120 136 65 66 95 53 19 20 107 100 100 FRONT To DY hook DY Lead from MAIN 74 77 61...

Page 68: ...o SHIELD VIDEO A 1 2 4 5 6 7 8 9 10 11 3 To SHIELD VIDEO A A A 8 110 125 117 116 torque 5 7kgf cm torque 5 7kgf cm G F E H J K L D C B 11 10 9 8 7 6 5 1 2 3 PIN SHIELD VIDEO A A 4 CRT FRONT CABINET 59...

Page 69: ...63 ASSY 6 2 ASSY 7 ASSY MONITOR 2 79 torque 12 13kgf cm 2 torque 12 13kgf cm 590R156 01 52 47 MB From PWB MAIN 111 110 74 73 34 24 35...

Page 70: ...156 152 1 30 15 IC350 T501 AA AB 13 C539 C564 C393 AB AA 30 1 R366 IC350 C364 R375 R995 3 116 121 C368 R390 V DY C412 D403 R335 51 53 50 MR M1 MH MB MT M3 D501 Q521 Q951 Q503 D511 G G1 M4 D 3 25 3 26...

Page 71: ...1 D922 IC920 AH IC901 AH RADIATOR RADIATOR TH901 4 5mm PWB PWB IC601 CN701 2 CN702 4 CN703 4 CN601 2 CN602 2 TH901 CN203 CN204 22 23 2 G1 KG G2 KR H1 H2 KB 1 2 2 2 18 17 14 11 17 27 17 23 28 13 29 25...

Page 72: ...7 DIAGRAMS 66...

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