Iiyama Vision Master Pro411 Service Manual
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Iiyama Vision Master Pro411 Service Manual

Iiyama Vision Master Pro411 Service Manual

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NO. S1700E01
June 27, 2000

SERVICE MANUAL

i70A
A705MT
S705MT
Copyright
I I YA M A C O R P O R AT I O N
710-1 Kitaowaribe, Nagano-shi 381-0014 JAPAN

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  • Page 1: Service Manual

    NO. S1700E01 June 27, 2000 SERVICE MANUAL i70A A705MT S705MT Copyright I I YA M A C O R P O R AT I O N 710-1 Kitaowaribe, Nagano-shi 381-0014 JAPAN...
  • Page 2 [ Revision Record ] Rev. Section Contents...

  • Page 3: Table Of Contents

    CONTENTS Page i-ii SAFETY PRECAUTION................1. SET-UP ADJUSTMENTS................1-12 2. TIMING CHART....................3. IC APPLICATION................... 14-15 4. CIRCUIT DESCRIPTION................. 16-24 25-40 5. SERVICE PARTS LIST................... 41-46 6. EXPLODED VIEW..................7. DIAGRAMS....................47-50 NOTICE The information in this document is subject to change without notice.

  • Page 4: Safety Precaution

    SAFETY PRECAUTION 1. The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.
  • Page 5 Alternate Check Method Plug the AC line cord directly into the AC outlet (do not use a line isolation transformer during this check.). Use an AC voltmeter having 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500910W resistor paralleled by a 0.15uF AC-type capacitor between an exposed metal part and a known good earth ground (water pipe etc.).

  • Page 6: Set-Up Adjustments

    Scale (Two 50cm scales put together so that no visual aberration occurs.) Frequency counter Digital wattage meter Degausser Interface adapter (Iiyama handmade) Short-connector (Iiyama handmade) <Preparation> Place the monitor without tilting. Connect the signal cable from the signal generator to the monitor.

  • Page 7: Set-Up Adjustments

    ADJUSTMENT MODE There are two different modes available to adjust the monitor as described below. The adjustment with ‘o’ in front of the title are only available under User Mode. The adjustments with ‘n’ in front of the title are only available under Factory Mode.
  • Page 8 1-1. ANODE VOLTAGE adjustment [PWB-MAIN] WARNING ! VR501 (HV-ADJ) has been carefully factory-adjusted for each unit in order to satisfy regulations regarding X-radiation. Further adjustment on VR501 shall not be performed. In case of adjustment, the adjusted position of VR501 must be fixed by a soldering iron to prevent it from rotating.
  • Page 9 1-4. H-BLANKING confirmation Receive a cross-hatch inverted signal of MODE 5 or MODE 6. Minimize the horizontal size with the front buttons. Raster rolling Picture Select DA TEST 3 and press the MENU Button so that the automatic confirmation program starts. Confirm that X of the right hand side figure is as follows: X </= 3.0mm.
  • Page 10 1-9. PICTURE SIZE, POSITION AND DISTORTION adjustment (Criteria) Receive a cross-hatch inverted signal of MODE 5. Adjust the picture size and position to the specified setting below. Picture H-size: 310±4mm H-position: | A–B |<4mm V-size: 232.5±4mm V-position: | C–D |<4mm Correct the side distortion with the front buttons so that X of the right hand Bezel side figure is as follows: | X | </= 3.0mm.
  • Page 11 1-12. Automatic COLOR adjustments WARNING: Do not change the horizontal and vertical sync signal or the frequency while the automatic COLOR adjustments are underway. Color analyzer setting: cd/m² Luminance unit switch Luminance unit switch: cd/m B.P.S. DIP switch: 9600 (1000) Turn ON the color analyzer switch and press 0-CAL switch before use.
  • Page 12 1-14. BRIGHTNESS adjustment [PWB-MAIN] Brightness Receive an entire white raster signal of MODE 5. Apply a photometer to the screen center. Adjust VR502 (ABL-ADJ) so that photometer reads 105±5cd/m VR502 ABL-ADJ 1-15. SYNC SIGNAL INPUT confirmation Receive a cross-hatch inverted signal of MODE 5. Select composite and sync on green signal inputs respectively by the signal generator.
  • Page 13 1-18. RASTER REGULATION (DYNAMIC) confirmation Back-raster Receive an entire white signal of MODE 6. Set the input signal by the signal generator as follows: Picture V-DISPLAY-TIME: 150 V-POSI-TIME: 450 Maximize the brightness. Confirm that ,W of the right hand side figure is 1.0mm or less when turning the luminance volume on the signal generator to the maximum and “1”...
  • Page 14 1-20. LUMINANCE DIFFERENCE adjustment ( A705MT / i70A ) Receive an entire white signal of MODE 5. Apply a photometer to C (center), L (left) and R (right) in the right hand side figure respectively. Confirm that the luminance difference between C, L and R is within ±10cd/m respectively.
  • Page 15 1-22. ITC (Integrated Tube Component) adjustments The following ITC adjustments should be made only when a new picture tube is installed* , or convergence is poor. All set-up adjustments above-mentioned must be completed before any further ITC adjustment is attempted. Perform the following adjustments by setting H-convergence and Tilt-dy to center indication.
  • Page 16 1-22-2. STATIC CONVERGENCE adjustment Receive a red and blue cross-hatch signal. Adjust the 4-POLE MAGNET so that red and blue beams converge on the center cross lines. Add green to the red and blue cross-hatch signal. Adjust the 6-POLE MAGNET so that red and blue beams converge with green beam on the center cross lines.
  • Page 17 1-22-6. YH adjustment (251Z063-03) (251Z063-03) h(t) h(a) (251Z066-01) (251Z066-01) Receive a red and blue cross-hatch signal. Adjust the specified YH volumes so that vertical cross lines converge each. 1-22-7. SCREEN-CORNER MISCONVERGENCE correction Receive a red and blue cross-hatch signal. Affix a *ferrite sheet (890Z003A01/03/05) between SEPARATOR and CRT corresponding to the partially misconverged areas.
  • Page 18 Video Sync V-parameters H-parameters O: Total period A: Total period P: Sync.width B: Sync.width Q: Back porch C: Back porch R: Active video D: Active video S: Front porch E: Front porch Sync Horizontal (µsec) Vertical (msec) Sync polarity Mode VESA Timing Name (kHz) (Hz)

  • Page 19: Ic Application

    3. IC APPLICATION Ref No. Description Application Deflection circuit UPC1884 H&V oscillator, Distortion / Size / Phase / DBF control IC301 IC401 LA7840N Vertical deflection output IC501 SLA5077 Cushion-S switching FET array Power circuit IC803 KIA7045 / M51951 5V power watcher (Microprocessor system reset) IC901 TEA1504 Main power control...
  • Page 20 Microprocessor specifications Name Function Name Function V-IN V-SYNC signal input 12MHz X'TAL H-IN H-SYNC / COMP signal input XOUT 12MHz X'TAL V-OUT V-SYNC signal out TEST H-OUT H-SYNC signal out 5V Vcc CLAMP Video clamper MODEL SW Model switching (A705: Low, S705: High) N.C.

  • Page 21: Circuit Description

    4. CIRCUIT DESCRIPTION 4-1. POWER SUPPLY circuit (1) Normal mode This circuit is an asynchronous switching power supply circuit with using IC901. Switching frequency is determined on approx. 70kHz oscillation by resistance of R919. IC905 detects the load of 27V output voltage from the T901 secondary and controls luminescence of PC901 (photocoupler).
  • Page 22 (2) Power management modes Stand-by / Suspend state The 12V line of the T901 secondary stops so that a load current decreases and the feedback voltage to pin 9 of IC901 declines. The output frequency of pin 4 of IC901 is switched to 30kHz from 70kHz and it reduces a power. Q901 Drain waveform IC901 Pin 4 output waveform Active-off state...
  • Page 23 4-2. PROTECTION circuit This circuit is composed of the following protection circuits to prevent a damage to the monitor and X-ray radiation when the monitor is inoperative. When the circuit is in the following cases, pin 19 of IC301 turns to 5V and then the horizontal drive signal output from pin 17 and the variable B control pulse output from pin 14 turn to “LOW”...
  • Page 24 4-4. DISPLAY POWER MANAGEMENT circuits (1) Stand-by / Suspend state: When receiving no horizontal or vertical sync signal for 6 seconds, the output voltage of pin 25 of IC801 turns to 5V from 0V and Q903 is turned off. The output voltage of IC903 (12Vreg.) turns to 1.2V from 12V and then the circuit controlled by 12V stops operation.

  • Page 25: Video Circuit

    4-6. VIDEO circuit (1) Pre-amp <VIDEO> The video signal from D-SUB connector is input to IC201 pre-amplifier and then clamped by clamp signal input to pin 19. The blanking signal input to pin 27 is synthesized with the clamped signal and then output from pins 35 (RED), 32 (GREEN) and 29 (BLUE) respectively.
  • Page 26 4-7. CONTROL circuits (1) HORIZONTAL / VERTICAL OSCILLATION circuit The sync signal input to IC301 is phase-sifted and converted to the waveform in IC301. The pulse synchronized with the horizontal sync signal is output from pin 17 as horizontal drive pulse. The sawtooth wave synchronized with the vertical sync signal is output from pin 4.
  • Page 27 (2) HORIZONTAL SIZE and DISTORTION CONTROL circuits The variable B voltage control pulse synchronized with the horizontal sync signal is output from pin 14 of IC301. The horizontal size control voltage and distortion 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: H-size: The output duty of pin 14 is varied by the DC voltage input to pin 11.

  • Page 28: Horizontal Deflection Circuit

    4-8. HORIZONTAL DEFLECTION circuit The horizontal drive pulse output from pin 17 of IC301 is pre-driven by Q503 and T501 and then supplied to Q504 (H-OUT) base as a current. The current is amplified by Q504 and then supplied to the deflection yoke as a deflection current to control the horizontal deflection.
  • Page 29 4-10. DYNAMIC BEAM FOCUS (DBF) circuit (1) H-DBF The parabolic wave of horizontal period is output from pin 9 of IC301 and then amplified by approx. 18 times by Q518 and Q519. It increases up to approx. 500Vp-p by T503 and synthesized with V- parabolic wave and then added to the focus circuit of the FBT (flyback transformer).

  • Page 30: Service Parts List

    5. SERVICE PARTS LIST WARNING ! The components identified by “ ! ” in this manual are critical for safety. Replace only with part number specified . < Contents > -Page- Abbreviations and Marks..................FAMILY-TREE....................ASSY-PACKING..................... ASSY-MONITOR....................ASSY-PWB-MAIN....................29-36 ASSY-PWB-VIDEO..................... 37-39 SUB-MATERIAL....................
  • Page 31 ELECTRICAL PARTS LIST < Abbreviations in PART section > Abbreviation Meaning Resistor-Carbon R-MB Resistor-Metal R-FUSE Resistor-Fuse Capacitor-Ceramic Capacitor-Electrolytic C-PP Capacitor-Polypropylene C-MF Capacitor-Multilayer Metallized Polyester Film Diode Zener Diode Transistor Photo Coupler Positive Thermistor Horizontal Drive Transformer Flyback Transformer Variable Resistor Switch Switching Transformer <...

  • Page 32: Exploded View

    6. EXPLODED VIEW Note: The numbers in this exploded view are the same as the reference numbers in the Chapter 5. STAND FRONT Three Button Operated OSD Windows 95/98Piug&Play JAPAN GOLF TOUR FRONT 10 20 ASSY-PACKING - 41 -...
  • Page 33 15 16 18 ASSY-1 ASSY-2 S705MT A705MT / i70A 33 34 P903 A705MT A705MT ASSY-MONITOR - 42 -...
  • Page 34 ASSY-3 P201 P212 P204 P205 P203 P202 S705MT P903 LEAD-CONNECTOR CLAMPER L1,L2,N1,N2,DG P903 P801,P805(SIGNAL) P801,P805(SIGNAL),AB FOCUS-LEAD P305 P805 P805 P201 P212 P903 P802 P801 A705MT / i70A P304 ASSY-MONITOR - 43 -...
  • Page 35 ASSY-4 ASSY-5 ASSY-MONITOR - 44 -...
  • Page 36 D308 RT901 T501 J150 C333 J076 Q901 P304 P308 IC401 P802 CN901 Q521 P307 P302 Q504 D503 IC903,IC904 Q307 IC501 P801 D909,D910, D911 Q514,Q515 CN901 ASSY-PWB-MAIN - 45 -...
  • Page 37 IC203 AA AB ASSY-PWB-VIDEO - 46 -...

  • Page 38: Diagrams

    7. DIAGRAMS - 47 -...
  • Page 39 D308 R338 C324 T502 C504 IC401 LA7840L A705 S705 B-100P-2KV 2.2M-J/K 2100MH R337 150K-F D502 D307 HZ5B1 C321 0.12u-J 0.13u-J 1N4148 1/10W L302 R505 SR204 /250V C510 4.7K MTZ-J4.7B 470u/35V 250V 250V C-PP C506 1SS120 560uH D2S4M C505 pump up 1/10W 5W 120 thermal-pro...
  • Page 40 S901 KDC-A04 K901 L901 C905 TH901 SS28V-15125 0SH-SS-212DM5/DG12D2/ALA2PF12 2200P-M DSC-10D-11 LFZ2805V07 SCK-103 AC250V 1N4148 HF2836-163Y-1R5-T01 D902 1SS133 AC-LINE F901 LAE-R8812024 1SS120 T6.3A/250V D901 PR901 R901 P903 C903 D3SBA60 C906 R22M-M 470K Q902 RBV-406 C904 PTH451A4R5Q21(FOR 200V) R948 R22M-M AC250V 1/2W PTH451A3R0Q11(FOR 100V) 4R7M-K KRC105S...
  • Page 41 R261 L203 D201 TH18103MBS C262 1N4148 C261 L261 1/10W 47u/25V /1SS133 R203 0.1u/25V 100uH /1SS120 C266 C265 C-C-CHIP C211 R202 (105¢X) 10u/100V E-R01M-P 1/4ws D202 IC201 R201 R262 500V 1N4148 P201 M52743BSP 1/10W 75-F 12K-F (105¢X) R205 6PIN L202 1/10W /1SS133 IC203 C201...
  • Page 42 DWG. TITLE : FAMILY-TREE GROUP 10: A705MT (HNE), 20: A705MT (HNB), 30: S705MT (HNE), 40: S705MT (HNB), 50: i70A GROUP 10 REV. REF.NO. PART DESCRIPTION PART NO. ASSY-PACKING T985T033-20 ASSY-PACKING T985T033-30 ASSY-PACKING T985T033-90 ASSY-PACKING T985T033-11 ASSY-PACKING T985T033-60 ASSY-PACKING T985T033-70 ASSY-PACKING T985T033-41 ASSY-PACKING T985T033-51...
  • Page 43 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. RADIATOR-M 590S143B01 RADIATOR-P 590V106A01 SHIELD-IC-A 590V107A01 SHIELD-IC-B 590V108A01 AC-STOP 590V105A01 LEAD-WIRE 246Z015A01 LEAD-WIRE 246Z015A01 LEAD-WIRE 246Z002A01 LEAD-WIRE 246Z003A01 LEAD-CONNECTOR 246Z005B01 LEAD-CONNECTOR 246Z006A01 LEAD-WIRE 246Z014A01 LEAD-WIRE...
  • Page 44 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. C501 C-PP 63/100V 10M-K 425Z106B37 C502 C-C-CHIP B-4700P-K 2125 411Z472B14 C503 500V B-680P-K 411Z681B33 C504 C-PP 250V 2R2M-J 425Z225C17 C505 C-PP 1800/2000V2000P-H 424Z202D47 C505 C-PP...
  • Page 45 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. C903 C-PP AC250V R22M-M 510Z013A16 C904 AC250V 2200P-M 510Z011A26 C905 AC250V 2200P-M 510Z011A26 C906 C-PP AC250V R22M-M 510Z013A16 C907 AC250V 2200P-M 510Z012A16 C908 C-PP 630V...
  • Page 46 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. D512 1N4148/1SS133/1SS120 742Z001A21 D513 EM01Z/D1N60/1N4003 742Z019A31 D514 1N4148/1SS133/1SS120 742Z001A21 D515 HZT33-10 742Z408A11 742Z019A31 D516 EM01Z/D1N60/1N4003 D517 MTZ-J10C/HZ11A2 742Z406A91 D518 MTZ-J27D/HZ27-2 742Z409A11 D519 MTZ-J27D/HZ27-2 742Z409A11 D520...
  • Page 47 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. L504 COIL-CHOKE 39MH 751Z611A20 L504 COIL-CHOKE 27MH 751Z613A20 L505 EYELET 679D022A20 L505 COIL-H-LIN 754Z004A20 L505 COIL-H-LIN 754Z004A70 L506 COIL-CHOKE 1000MH 751Z308A56 L507 COIL-CHOKE 470MH 751Z308A46...
  • Page 48 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. Q520 BF423/HBF423 740Z176A13 Q521 EYELET 679D022A20 Q521 2SK2996 740Z463A15 Q522 TR-CHIP BT1815/2SC2412/KTC3875/2PD601 740Z151A34 Q801 TR-CHIP KRA103/DTA124/RN2403/PDTA124 740Z661A34 Q802 TR-CHIP KRA103/DTA124/RN2403/PDTA124 740Z661A34 Q803 TR-CHIP BT1815/2SC2412/KTC3875/2PD601 740Z151A34...
  • Page 49 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. R405 R-M-CHIP 1/10W 10K-F 2125 613Z103C54 R406 R-FUSE 1/4W 1R5-J 614Z159A61 R407 R-M-CHIP 1/10W 10K-F 2125 613Z103C54 R409 R-M-CHIP 1/10W 3R9K-F 2125 613Z392C54 R409 R-M-CHIP...
  • Page 50 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. R566 R-MB R15-J 612Z158C37 R567 R-MB 56-J 612Z560C57 R568 R-FUSE 1/4W 2R2-J 614Z229A61 R569 R-FUSE 1/4W 10-J 614Z100A61 R570 R-M-CHIP 1/10W 470-J 2125 613Z471C24 R571...
  • Page 51 DWG. TITLE : ASSY-PWB-MAIN GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. R932 R-M-CHIP 1/10W 430-F 2125 613Z431C54 R934 R-M-CHIP 1/10W 3R6K-F 2125 613Z362C54 R935 R-M-CHIP 1/10W 2R2K-J 2125 613Z222C24 R937 R-M-CHIP 1/10W 22-J 2125 613Z220C24 R938...
  • Page 52 DWG. TITLE : ASSY-MONITOR GROUP 10: A705MT, 20: S705MT, 30: i70A GROUP REV. REF.NO. PART DESCRIPTION PART NO. M41LRY31X21 251Z063A03 M41LRJ507XX408(F1) 251Z066A01 FRONT-CABINET 700R081A01 FRONT-CABINET 700R081A21 FRONT-CABINET 700R082A21 BACK-COVER 700R083A01 BACK-COVER 700R083A21 STAND-SUPPORT 770R030A01 STAND-BASE 770R024A02 LEAD-CONNECTOR 246Z008B01 LEAD-CONNECTOR 246Z009A01 LEAD-WIRE 246Z013A01 EARTH-WIRE...
  • Page 53 DWG. TITLE : SUB-MATERIAL REV. REF.NO. PART DESCRIPTION PART NO. Q'TY SILICONE-GUM TSE3940/KE3490 090Z001A10 SILICONE-GUM TSE3940 090Z001A20 SILICONE-GUM TSE3941 090Z032A01 SILICONE-GUM KE3480 090Z018A01 SILICONE-GUM TSE3941 090Z032A02 SILICONE-GUM KE40RTV 090Z009A30 SILICONE-GREASE YG6260/G747 090Z007A10 SILICONE-GREASE KS660 090Z027A01 SILICONE-GREASE G501 090Z016A01 SILICONE-GREASE TSK5370 090Z028A01 BOND LEICHLOCK-NO.3-C...
  • Page 54 DWG. TITLE : ASSY-PWB-VIDEO GROUP 10: A705MT / i70A, 20: S705MT GROUP REV. REF.NO. PART DESCRIPTION PART NO. SHIELD-VIDEO 590S144A01 LEAD-WIRE 246Z001A01 LEAD-WIRE 246Z011A01 CLAMPER TK6-34 540Z103A01 SCREW MP-SEMS-W3*8MC-S 630Z401B08 C201 C-E-NP 3R3M-M 472Z339B63 C202 47M-M 470Z470G43 C203 C-C-CHIP F-R1M-Z 2125 411Z104B44 C205...
  • Page 55 DWG. TITLE : ASSY-PWB-VIDEO GROUP 10: A705MT / i70A, 20: S705MT GROUP REV. REF.NO. PART DESCRIPTION PART NO. C295 C-C-CHIP F-R1M-Z 2125 411Z104B44 C297 C-C-CHIP B-1000P-K 2125 411Z102B14 C298 500V E-R01M-P/Z 411Z103A03 C299 100V 100M-M 470Z101G83 CN201 SOCKET-CRT ISDW36S-L 449Z005A20 CN202 SOCKET-CRT ISDW02S-L...
  • Page 56 DWG. TITLE : ASSY-PWB-VIDEO GROUP 10: A705MT / i70A, 20: S705MT GROUP REV. REF.NO. PART DESCRIPTION PART NO. R213 R-M-CHIP 1/10W 330K-J 2125 613Z334C24 R214 R-M-CHIP 1/10W 3R3K-J 2125 613Z332C24 R215 SO-COPPER-WIRE 990P003A1 R216 R-M-CHIP 1/10W 2R2K-J 2125 613Z222C24 R217 R-M-CHIP 1/10W 3R3K-J...
  • Page 57 DWG. TITLE : ASSY-PWB-VIDEO GROUP 10: A705MT / i70A, 20: S705MT GROUP REV. REF.NO. PART DESCRIPTION PART NO. R294 R-M-CHIP 1/10W 33K-F 2125 613Z333C54 R295 R-M-CHIP 1/10W 2R2K-F 2125 613Z222C54 R296 1/2W 22K-J 613Z223C81 R297 1/2W 10K-J 613Z103C81 SG201 NEON-LAMP DSP-201M/YP-201M 789Z001A71 SG221...

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