Iiyama Vision Master Pro 413 Service Manual
  1. Manuals
  2. Brands
  3. Iiyama Manuals
  4. Monitor
  5. Vision Master Pro 413
  6. Service manual

Iiyama Vision Master Pro 413 Service Manual

17-inch color monitor
Hide thumbs Also See for Vision Master Pro 413:
Table of Contents

Advertisement

Quick Links

See also: User Manual

SERVICE MANUAL

17-inch Color Monitor
IIYAMA CORPORATION
Copyright
710-1 KITAOWARIBE, Nagano-shi 381-0014 JAPAN
HM703UT
HA703UT
HF703UT
HM704UTC

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Vision Master Pro 413 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Iiyama Vision Master Pro 413

Summary of Contents for Iiyama Vision Master Pro 413

  • Page 1: Service Manual

    SERVICE MANUAL HM703UT HA703UT HF703UT HM704UTC 17-inch Color Monitor IIYAMA CORPORATION Copyright 710-1 KITAOWARIBE, Nagano-shi 381-0014 JAPAN...

  • Page 2: Color Monitor

    SERVICE MANUAL COLOR MONITOR (IIYAMA) Date: Sep-08-01 Ver : A00 .!1!.
  • Page 3 THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS LIABILITY FOR CHANGES, ERRORS OR OMISSIONS, MANUFACTURE DATE: September.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS PAGE SPECIFICATIONS ..................... PRECAUTION AND NOTICES ................2-1 SAFETY PRECAUTIONS ................2-2 PRODUCT SAFETY NOTICE ............... 2-3 SERVICE NOTES ................... 2-4 HIGH VOLTAGE WARNING ............... OPERATING INSTRUCTIONS ................ADJUSTMENT ......................4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS ....... 4-2 MAIN ADJUSTMENTS ................. 4-3 ADJUSTMENT METHOD ................

  • Page 5: Specifications

    1. SPECIFICATIONS FOR IIYAMA SERIES COLOR MONITOR CRT : 43.2CM(17") 90 Deflection, 29mm Neck, Pure flat 0.25mm Dot Pitch, Non-Glare Screen Shadow mask (TOSHIBA)/APERUTE (MITSUBISHI). Viewable image Size: 40.6CM (16") diagonal Display Color: Unlimited Colors External Controls: Power On/Off, OSD key, Function knob: Contrast, Brightness, H-Size, H-Center, V-...
  • Page 6 11. Power Source: Switching Mode Power Supply AC 100 ~240V, 50/60Hz Universal Type 12. Operating Temperature: 0 C to 40 C Ambient 13. Humidity : 10% to 85% Relative, Non-Condensing Weight: 16.0 Kg (Net), 19.5Kg (Gross) for HF703U/UT • 16.0 Kg (Net), 20.0Kg (Gross) for HA703U/UT 18.0 Kg (Net), 21.5Kg (Gross) for HM703U/UT 18.0 Kg (Net), 20.0Kg (Gross) for HM704UC/UTC Dimensions Monitor:...

  • Page 7: Precaution And Notices

    2. PRECAUTIONS AND NOTICES SAFETY PRECAUTIONS 1.Observe all caution and safety related notes located inside the display cabinet. Operation of the display with the cover removed, may cause a serious shock hazard from the display power supply. Work on the display should not be attempted by anyone who is not thoroughly familiar with precautions necessary when working on high voltage equipment.

  • Page 8: High Voltage Warning

    HIGH VOLTAGE WARNING Operation of monitor outside of cabinet or with back removed may cause a serious shock hazard. Work on this model should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment. Exercise care when servicing this chassis with power applied.

  • Page 9: Operating Instructions

    3. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the 7K color display. 1. Position the display on the desired operation and plug the power cord into a convenient AC outlet. Three- wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduit ground.

  • Page 10: Adjustment

    4. ADJUSTMENT 4-1ADJUSTMENT CONDITIONS AND PRECAUTIONS Approximately 30 minutes should be allowed for warm up before proceeding. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 4-2 MAIN ADJUSTMENTS FUNCTION LOCATION DESIGNATION...
  • Page 11 FACTORY PRESET H: 36.51kHz H :6 8 .7 K H z V: 51.34Hz V :8 5 .0 H z 6500 9300 9 3 0 0 5 0 0 0 6 5 0 0 R G B CONTRAST H-MOIRE REDUCE BRIGHTNESS V-MOIRE REDUCE H-CENTER R-GAIN...
  • Page 12 Press MENU Key to Quit the OSD window. Mean while the new setting data will be saved in the memory. E. To switches the input signal to the other Timing Mode. Please follow step C ~ D to get the optimum picture.
  • Page 13 E. Repeat step C & D.. 5. Purity Adjustment A. Be sure that the display is not being exposed to any external magnetic fields. B. Ensure that the spacing between the Purity, Convergence, Magnet, (PCM), assembly and the CRT stem is 29mm .(See below diagram) C.

  • Page 14: Circuit Description

    5. CIRCUIT DESCRIPTION 5-1 MICRO CONTROLLER CIRCUIT MICRO Controller The IC101 contains a 6502 8-bit CPU core, 256 bytes of RAM, 16K bytes of ROM,14 channel 8 bit PWM D/A converters, 2 channel A/D converters for key detection, one 8 bit pre-loadable base timer, internal H- sync and V-sync signals processor providing mode detection, watch- dog timer preventing system from abnormal operation, and an I C bus interface.
  • Page 15 PLL2 Phase Detector This phase detector is similar to the PLL1 detector and compares the line flyback pulse at pin 1 with the oscillator saw-tooth voltage. The PLL2 detector thus compensates for the delay in the external H-deflection circuit by adjusting the phase of the HDRV output pulses. The phase between H-flyback and H-sync can be controlled at pin30.
  • Page 16 5-3 TRANSISTOR & DIODE CIRCUIT LOCATION FUNCTION AL DESCRIPTION D101 For C103 Discharge Q101 For LED Indicator Control D431 Protection Diode for B+ Control D411 Speed up for Q403 D412 Damping Diode and Modulation Diode Q401 B+ Mute Control Q402 Horizontal Driver Q410 Horizontal Output...

  • Page 17: Trouble Shooting Chart

    6.TROUBLE SHOOTING CHART 6-1 NO RASTER, CRT RELATIVE CIRCUIT PROBLEMS CHECK MAIN PCB POWER CHECK MAIN PCB POWER SUPPLY SUPPLY 220V,16V,80V 60.5V, 14.5V, 80V CHECK POWER SAVING CIRCUIT, H-SYNC, V-SYNC SIGNAL CHECK THE HIGE VOLTAGE CHECK THE HIGE VOLTAGE OF CRT ABOUT 24.5~25.5KV REFER ITEM S.M.P.S.
  • Page 18 2.ABNORMAL VIDEO LEVEL ON SCREEN CHECK THE VOLTAGE OF IC801 CHECK THE VOLTAGE OF IC801 PIN 7,15,18,21 ABOUT 12V PIN 6, 9, 22 ABOUT 12V CHECK 12V RELATIVE CIRCUIT CHECK THE SIGNAL INPUT OF R.G.B. ABOUT 0.7Vpp CHECK SIGNAL CABLE OR INTERFACE CARD.

  • Page 19: Abnormal Display

    6-2 ABNORMAL DISPLAY 1.NO SIGNAL ON SCREEN CHECK VIDEO IC801 VCC ABOUT 12V CHECK THE 12V PIN OF P802 CONNECTOR CHECK THE OUTPUT CHECK THE OUTPUT VOLTAGE VOLTAGE OF IC801 OF IC801 PIN 18, 20, 23 ABOUT 3Vpp PIN 16, 19,22 ABOUT 3Vpp. CHECK THE RELATIVE CIRCUIT OF IC801 CHECK THE B+ VOLTAGE OF...

  • Page 20: No Blanking

    6-3 BLANKING CHECK THE RELATIVE CIRCUIT OF BLANKING CHECK THE RELATIVE CIRCUIT OF CHECK THE RELATIVE CIRCUIT D424,C451,R497 ON MAIN PCB OF C433, D410, R635, R636, IC105 ON MAIN PCB CHECK IC801 PIN 16 ON VIDEO CHECK IC801 PIN 16 ON VIDEO PCB, PCB,CHECK G1 RELATIVE CIRCUIT CHECK G1 RELATIVE CIRCUIT Q704,R718,C713 ON MAIN PCB...

  • Page 21: Abnormal Horizontal Deflection

    6-5 ABNORMAL HORIZONTAL DEFLECTION 1. ABNORMAL HORIZONTAL WIDTH OF VIDEO READJUST H-WIDTH FUNCTION CHECK THE RELATIVE CIRCUIT CHECK THE RELATIVE CIRCUIT OF Q409 OF Q404, Q405, & Q406 CHECK FBT B+ VOLTAGE ABOUT 60.5V AT FH=31KHz CHECK THE RELATIVE CIRCUIT CHECK THE RELATIVE OF SMPS, Q408, IC401 PIN4,5,6, CIRCUIT OF SMPS.

  • Page 22: Abnormal Vertical Scanning

    6-6 ABNORMAL VERTICAL SCANNING 1. ABNORMAL VERTICAL SIZE READJUST V-SIZE FUNCTION VALUE CHECK THE IC601 PIN 7 ABOUT 40V CHECK SMPS RELATIVE CHECK ZD601, ZD602 R626 & SMPS CIRCUIT RELATIVE CIRCUIT CHECK VERT. OSC CIRCUIT CHECK IC401 PIN 22, 23, 24 CHECK IC601 PIN 6 OUTPUT ABOUT CHECK IC401 PIN 12, 13 38Vpp...

  • Page 23: Power Supply Trouble Shooting Chart

    6-9 POWER SUPPLY TROUBLE SHOOTING CHART BEFORE CHECK SW.REG. PLEASE REFER TO THE POWER SUPPLY BLOCK DIAGRAM POWER SUPPLY OUTPUT: (A) VARIABLE OUTPUT : 60.5V - 145V DEPENDING UPON H.SYNC FREQUENCY) CONSTANT OUTPUT : 6.3V,16V, 220V, 80V BEAD SET ABNORMAL VARIABLE OUTPUT MAKE SURE THAT CHECK AC LINE THE VARIABLE...

  • Page 24: Mechanical Of Cabinet Front Dis-Assembly

    7. MECHANICAL OF CABINET FRONT DIS-ASSEMBLY .!33!.

  • Page 25: Parts Listing

    FRONT PANEL 34A 834- 77- T BACK COVER(IIYAMA special color 34A 835- 77- B BASE (IIYAMA special color) 34A 836- 77- B SWIVEL (IIYAMA special color ) 40A 152-509 RECYCLE LABEL 40A 152-512 RECYCLE LABEL 40A 153-515 CRT WARNING LABEL...
  • Page 26 85A 577-504- A SHIELD 85A6020- 2 Grounded plate 89A174E-511- GL SIGNAL CABLE 89A410E-18N- IS POWER CORD FOR British 95A 91-205-688 WIRE 95A2070- 10 WIRE 95A8013- 2 CONNECTOR B1A1035- 10-128 SCREW 3.5X10 BEZD/BACK COVER M1A1130- 8-128 SCREW 3.0X8 Q1A 340- 16-128 SCREW 15A5659/BACK COVER Q1A1030- 10-128...
  • Page 27 C425 65A 2K-101- 5A 100P 2KV C425 65A 2K-101- 5T 100PF/2KV C426 65A517K-103- 5A 10000PF/500V +-10% Y5P C427 65A517K-222- 1T 2.2NF/500V Z5F +-10% C427 65A517K-222- 2A 2200PF Z5P 500V 10% C431 63A210J-823-2CC 0.082UF 250V C431 63A210J-823-2CM 0.082UF 5% 250V BY MYLAR C433 63A210J-104-2CC 0.1UF +-5% 250V...
  • Page 28 D423 93A1002- 1P-52T 1N5817 D423 93A1002- 1W-52T 1N5817 D425 93A1060- 6-52T F R D BYV26C D429 93A1002- 1P-52T 1N5817 D429 93A1002- 1W-52T 1N5817 D908 93A3060-500 RG4A SANKEN D912 93A2060- 1-52T FRD BYM26C D913 93A2060- 1-52T FRD BYM26C D916 93A3020- 8 RG-4Z-LF-L1 D916 93A3020- 13-52T...
  • Page 29 NR901 61A 58- 9U 10 OHM +-20% NTCR NR901 61A 58- 9W 10 OHM +-20% NTCR P105 33A3278- 5 5 PIN P201 33A3278- 2 2P PLUG B2B-XHA/JST P202 33A3278- 2 2P PLUG B2B-XHA/JST P203 33A3278- 3 3P PLUG B3B-XHA/JST P401 33A8009- 3 3 PIN PLUG P402...
  • Page 30 T401 79A 167-114- H DRIVER TRANSFORMER T402 73A 147-123- T LINEARITY COIL LINEARITY T403 79A9110- 2 FBT by Darfan T404 79A 167-112- HA Driver Transformer T404 79A 167-112- LA DRIVER TRANSFORMER T404 79A 167-112- SA Driver Transformer T405 79A 167-122- H DRIVE TRANSFORMER T405 79A 167-122- L...
  • Page 31 C440 67A 305-479- 7T 4.7UF +-20% 50V C444 65A 442-471- 9T 470PF 50V C445 65A 442-101-13T 100PF +-5% NPO 50V C446 65A 442-101-13T 100PF +-5% NPO 50V C447 64A176J-473- 2T 0.047UF 5% 250V MPE C448 64A176J-223- 2T 0.022UF/250V C450 65A 1K-102- 2T 1NF /1KV Z5P +-10% C451 65A 442-100-13T...
  • Page 32 C942 67A 305-109- 7T 1UF +-20% 50V C943 65A 442-470-13T 47PF +-5% NPO 50V C945 65A 444-102- 5T 1000 PF 10% 50V Y5P C946 64A701J-224-0AT 0.22uF/50V +-5% C947 65A 442-221-13T 220PF +-5% NPO 50V C949 65A 1K-470- 2T 47PF 1KV C951 64A701J-224-0AT 0.22uF/50V +-5%...
  • Page 33 D901 93A1040- 2-52T F.R.D UF4004/GIT D902 93A 64- 11-52T DIODE 1N4148 D905 93A 64- 11-52T DIODE 1N4148 D906 93A1060- 6-52T F R D BYV26C D907 93A1060- 6-52T F R D BYV26C D909 93A 64- 11-52T DIODE 1N4148 D910 93A 64- 11-52T DIODE 1N4148 D911 93A 64- 11-52T...
  • Page 34 J062 95A 90- 23 TIN COATED J063 95A 90- 23 TIN COATED J064 95A 90- 23 TIN COATED J065 95A 90- 23 TIN COATED J066 95A 90- 23 TIN COATED J067 95A 90- 23 TIN COATED J068 95A 90- 23 TIN COATED J069 95A 90- 23...
  • Page 35 J141 95A 90- 23 TIN COATED J143 95A 90- 23 TIN COATED J147 95A 90- 23 TIN COATED J148 95A 90- 23 TIN COATED J149 95A 90- 23 TIN COATED J156 95A 90- 23 TIN COATED J157 95A 90- 23 TIN COATED J158 95A 90- 23...
  • Page 36 Q426 57A 420- P- T TRAN 2SA733P/NEC TAPING Q426 57A 420- SG- T KSA733C-G TA FAIRCHILD Q621 57A 419- P- T TRAN 2SC945P/NEC TAPING Q621 57A 419- SG- T KSC945C-G TA FAIRCHILD Q622 57A 446- 1- T TRAN.2SC1213AC/HITACHI Q623 57A 619- 1- T 2SA673AC/HITACHI Q623 57A 727- 2- T...
  • Page 37 R215 61A175L-220-52T 22 OHM +-5% 1/2W R216 61A 602-103-52T 10K OHM 5% 1/6W R217 61A175L-101-52T 100 OHM +-5% 1/2W R218 61A175L-101-52T 100 OHM +-5% 1/2W R219 61A 602-473-52T 47K OHM 5% 1/6W R220 61A 602-102-52T 1K OHM 5% 1/6W R221 61A 602-153-52T 15K OHM 5% 1/6W R222...
  • Page 38 R479 61A 172-204-52T 200K OHM 5% 1/4W R480 61A 172-204-52T 200K OHM 5% 1/4W R481 61A 172-204-52T 200K OHM 5% 1/4W R484 61A 602-222-52T 2.2K OHM +-5% 1/6W R485 61A 602-624-52T 620K OHM 5% 1/6W R486 61A 602-103-52T 10K OHM 5% 1/6W R487 61A 602-272-52T 2.7K OHM 5% 1/6W...
  • Page 39 R737 61A 602-472-52T 4.7K OHM 5% 1/6W R738 61A 602-100-52T 10 OHM +-5% 1/6W R739 61A214Y-873-52T 87KOHM 1/4W R740 61A 602-471-52T 470 OHM +-5% 1/6W R741 61A 172-101-52T 100 OHM 5% 1/4W R742 61A 602-511-52T 510 OHM +-5% 1/6W R744 61A212Y-105-52T 1M OHM+-5% 1/2W Metal R745...
  • Page 40 55A 1- 4 SOLDER BAR 87A3504- 1- A HPS0720-01100 87A3504- RC- A CRT SOCKET ISDWO BY INC 705A791P-R56-01S IC803 ASS'Y C816 67A 309-101- 3T E.C 100UF +-20% 16V C874 65A 2M-103- 3B 0.01UF 2KV 20% Z5U C878 65A517K-102- 5T 1000PF 500V +-10% Y5P FB802 53A 40-501 TX03130NB...
  • Page 41 C864 64A176J-104- 1T 0.1UF 5% 100V C865 67A 309-109- 9T 1UF +-20% 100V C866 64A176J-104- 1T 0.1UF 5% 100V C867 67A 309-109- 9T 1UF +-20% 100V C868 65A 444-102-13T 1000PF +-10% Y5P 50V C869 65A 444-102-13T 1000PF +-10% Y5P 50V C870 67A 309-220- 9T 22UF 100V 85C...
  • Page 42 J821 95A 90- 23 TIN COATED J822 95A 90- 23 TIN COATED L801 61A 172-220-52T 22 OHM 5% 1/4W L802 71A 55- 9- T C SHIELD BEAD L850 95A 90- 23 TIN COATED L851 95A 90- 23 TIN COATED L852 95A 90- 23 TIN COATED Q801...
  • Page 43 R866 61A 602-103-52T 10K OHM 5% 1/6W R867 61A 602-103-52T 10K OHM 5% 1/6W R868 61A 602-103-52T 10K OHM 5% 1/6W R869 61A 172-330-52T 33 OHM +-5% 1/4W R870 61A 172-330-52T 33 OHM +-5% 1/4W R871 61A 172-330-52T 33 OHM +-5% 1/4W R873 61A175L-470-52T 47 OHM +-5% 1/2W...
  • Page 44 C324 65A 450-103- 3T 0.01UF +80-20% 50V C325 67A305M-101- 3T 100UF +-20% 16U D301 93A 64- 11-52T DIODE 1N4148 D302 93A 64- 11-52T DIODE 1N4148 D303 93A 64- 11-52T DIODE 1N4148 D304 93A 64- 11-52T DIODE 1N4148 D305 93A 64- 11-52T DIODE 1N4148 D306 93A 64- 11-52T...
  • Page 45 ZD304 93A 39-519-52T TZX8V2B ZD304 93A 39-528-52T ZENER DIODE HZ9A2 705A791AC5601B IC904 ASS'Y 90A 275- 8- A HEAT SINK M1A1730- 8-128 SCREW M3x8 IC904 56A 133- 12- N VOLTAGE REGULATORS UPC78 IC904 56A 133- 12- ST 3 PIN 12V REG.L7812CV SG 705A791AC5701D Q901 ASS'Y 32A3028- 16...
  • Page 46 95A201F- 50-252 25"-tPULSE 705A769NF3401N CAB'T ASS'Y Contrast between B791VZIWYIN1Z and A791VZIWYMNIZ B791VZIWYIN1Z A791VZIWYMN1Z CMA791V1NHB CHASSIS A791V-1HB PFC IIYAMA CMA791V1N CHASSIS A791V-1HS PFC IIYAMA 34A 833B77 T FRONT PANEL 34A 833A77 T FRONT PANEL(IIYAMA SPECIAL COLOR) 40A 154501 1 HI-POT GND LABEL FOR MONITOR...
  • Page 47 C323 67A 305471 3 470UF +-20% 16V CONTRAST BETWEEN B791VZIWYIN1Z AND B791VRGWYIN1Z B791VZIWYIN1Z B791VRGWYIN1Z CKA791VN1 KEY BOARD CMA791VNAHB CHASSIS FOR A791V-1AHB iiyama CMA791V1NHB CHASSIS A791V-1HB PFC IIYAMA 19A 506 2 STEEL WIRE SPRING 19A 506 5 SPRING 23A3178695 2A LOGO...
  • Page 48 AMA791V1NHB MAIN BOARD FOR A791V- AMA791VNAHB MAIN BOARD A791V-1AHB 1HB PFC iiyama CRA791V1NHB CRT BOARD A791V-1HB PFC CRA791VNAHB CRT BOARD FOR A791V-1AHB IIYAMA iiyam IA791V1NHB INPUT BOARD 15A5659500 2 Rear Bracket P203 33A3278 3 3P PLUG B3B-XHA/JST C449 63A210J1528CJ MPSA 1500PF 2KV +-5%...
  • Page 49 95A 90 23 TIN COATED R108 95A 90 23 TIN COATED CRA791V1NHB CRA791VNAHB ARA791V1NHB CRT BOARD A791V-1HB PFC ARA791VNAHB CRT BOARD FOR A791V-1AHB IIYAMA iiyam P801 33A3278 12 12 PIN 9A 203 8 BRASS PIN FB802 53A 40501 TX03130NB P801 33A327811A...
  • Page 50 SWITCHING DIODE BAV21 CONTRAST BETWEEN B791VZIWYIN1Z AND P791VZIWYIN1Z B791VZIWYIN1Z P791VZIWYIN1Z CKA791VN1 KEY BOARD CKA791VNHS KEY BOARD CMA791V1NHB CHASSIS A791V-1HB PFC IIYAMA CMP791VNHS CHASSIS FOR P791V-1HS IIYAMA 5A6009 1 CRT WASHER 5A6009 2 CRT WASHER 11A 112500 WIRE MOUNT 11A 112 1...
  • Page 51 C433 63A210J1042CC 0.1UF +-5% 250V C439 63A210J5642CH 0.56UF 250V C433 63A210J1042CH 0.1UF 250V C439 63A210J5642CM 0.56UF/250V C433 63A210J1042CM 0.1UF +-5% 250V P=15mm/MYLAR C709 65A 1K331 5A 330PF +-10% 1KV Y5P C449 63A210J1528CK MPSA 1.5NF,2KV,+-5% C710 65A 1K471 5A 470PF +-10% 1KV Y5P C442 63A210J2443CC 0.24uF 400V...
  • Page 52 705A791VC5702C Q410/Q427/D412 ASS'Y 705A791VC5702H Q431 ASS'Y 750A57262AVA7C 17" MPRII MITSUBISHI CRT 750A57262AVA7H 17" MITSUBISHI TCO ASS'Y AMA791V1NHB AMP791VNHS IC902 56A 158 1 T TL431CLP R712 61A 17220252T 2K OHM 5% 1/4W IC902 56A 158 2 T 3PIN IC TL431C/T.I. R713 61A 60233252T 3.3K OHM 5% 1/6W Q203...
  • Page 53 CRA791V1NHB CRP791VNHS ARA791V1NHB CRT BOARD A791V-1HB PFC ARP791VNHS CRT BOARD FOR P791V-1HS IIYAMA IIYAMA FB804 53A 40501 TX03130NB FB804 53A 40 8 FILTER FB802 53A 40501 TX03130NB FB803 53A 40 8 FILTER FB803 53A 40501 TX03130NB FB802 53A 40 8...

  • Page 54: Ic Block Diagrams

    9. IC BLOCK DIAGRAM IC101 NT6861 IC102 24C08 MODE/WC .!63!.
  • Page 55 IC401 TDA4856 EW-OUTPUT V-SYNC INPUT VERTICAL EHT COMPENSATION V-OUTPUT V-SYNC H-PINCUSHION AND POLARITY OSCILLATOR INTEGRATOR H-SIZE AND V-SIZE H-CORNER CORRECTION AND AGC V-LINEARITY H-TRAPEZIUM V-LINEARITY BALANCE H-SIZE VIDEO V-POSITION CLAMPING V-SIZE,VOVSCN AND V-BLANK HUNLOCK OUTPUT PROTECTION OUTPUT ASYMMETRIC AND SOFT START EW-CORRECTION I C-BUS FOCUS...
  • Page 56 NT6828 Block Diagram IC802 BUS CONTROL C BUS ROM/RAM DISPLAY BUFFER FONT12*8 EFFECT RECEIVER VERTICAL R/G/B VFLB VSYNC OUTPUT CONTROL DISPLAY FBKG MEMORY HFLB HSYNC PWM/ CONTROL COLOR REG. CONTROL TIMING POWER ON GENERATOR LOW VOLTAGE TEST HORIZONTAL PWM0-7 Dibo CIRCUIT POWER SYSTEM...

  • Page 57: Pcb Layout

    10 CRT BOARD LAYOUT .!66!.

  • Page 58: Schematic Diagram

    11 SCHEMATIC DIAGRAM FOR A791V-1HS (HA703U) P203 P201 P202 ROTATION P801 COIL CMPC-A791-1HS CRPC-A791-1HS H105 R101 R102 R103 R104 715A839-* 715A882-* C840 IC801 R860 P801 R817 R819 R881 TDA4887 C808 JUMPER 100V SW105 1/4W 120K SW102 SW103 SW104 D803 1/4W EXIT ENTER C802...
  • Page 59 FOR P791V-1HS (HF703UT) P203 P201 P202 ROTATION P801 COIL CRPC-A791-1HB C840 IC801 R860 P801 R819 TDA4887 R817 C808 R881 JUMPER 100V CMPC-P791V-1(HS) 1/4W 120K 1/4W D803 C802 1N4148 0.1UF R807 R818 D856 C809 D850 C856 Q850 1.0UF 1N4148 R138 R139 93A64- BF422 R805...
  • Page 60 A791V-1HB (HM703UT) P203 P201 P202 ROTATION P801 COIL CMPC-A791-1HB CRPC-A791-1HB H105 R101 R102 R103 R104 715A839-* C840 715A882-* P801 IC801 R860 R817 R819 R881 TDA4887 C808 100V JUMPER 120K SW104 SW105 1/4W SW102 SW103 D803 1/4W EXIT ENTER C802 1N4148 LEFT RIGHT 0.1UF...
  • Page 61 A791V-1AHB (HM704UC/UTC) ROTATION P801 P201 P202 COIL CRPC-A791-1HB C840 IC801 P801 R860 R817 R819 R881 TDA4887 C808 100V JUMPER 120K 1/4W CMPC-A791V-1AHB (HM704) 1/4W D803 C802 1N4148 0.1UF D856 R807 C809 R818 D850 Q850 C856 1.0UF 1N4148 OSD-R F/R1 93A64- BF422 R805 R866...

This manual is also suitable for:

Ha703utVision master pro 412Hf703utVision master 407Hm704utcHm703ut

Table of Contents