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Fujitsu 17P4 Service Manual
Fujitsu 17P4 Service Manual

Fujitsu 17P4 Service Manual

Color monitor

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CA-114
FACTORY MODEL : FS792G
MODEL: 17P4
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

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Summary of Contents for Fujitsu 17P4

  • Page 1 COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CA-114 FACTORY MODEL : FS792G MODEL: 17P4 CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............11 SAFETY PRECAUTIONS ........3 TROUBLESHOOTING GUIDE ......13 TIMING CHART ............4 EXPLODED VIEW..........20 OPERATING INSTRUCTIONS ........ 5 REPLACEMENT PARTS LIST ......22 CONTROL LOCATIONS ......... 6 PIN CONFIGURATION .......... 29 WIRING DIAGRAM ..........7 SCHEMATIC DIAGRAM .........
  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS SAFETY-RELATED COMPONENT WARNING! X-RADIATION There are special components used in this color monitor The only potential source of X-radiation is the picture tube. which are important for safety. These parts are marked However, when the high voltage circuitry is operating on the schematic diagram and the replacement properly there is no possibility of an X-radiation problem.
  • Page 4: Timing Chart

    TIMING CHART VIDEO SYNC FACTORY PRESET MODE MODE MODE 4 MODE 5 MODE 7 MODE 8 MARK MODE 1 MODE 2 MODE 3 MODE 6 MODE 9 MODE 10 Sync Polarity — — — 53.674 63.000 68.677 80.8 79.976 91.150 93.750 31.469 31.472...
  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW Power Button AC Power Socket See Front Control Panel Signal Cable Front Control Panel 3. SET Button 1. Power ON/OFF Button This button to enter a selection in the on screen This button is used to turn the monitor ON and OFF. display.
  • Page 6: Control Locations

    CONTROL LOCATIONS VR801 : High Voltage Adjustment (26kV) VR901 : B Adjustment (191V Line) - 6 -...
  • Page 7: Wiring Diagram

    WIRING DIAGRAM Anode Cap DY-Pin DY Assembly Screw P303 P303 P302 P701 Degaussing Coil P702 P901 P902 P401 P451 P453 P201 P902 - 7 -...
  • Page 8: Block Diagram

    BLOCK DIAGRAM - 8 -...
  • Page 9: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Line Filter & Associated Circuit. 5. X-ray Protection. This is used for suppressing noise of power input line This circuit detects the rectified DC voltage comes flowing into the monitor and/or some noise generated from the FBT pin 4. If the high voltage of the FBT in this monitor flowing out through the power input reaches up to about 30kV (abnormal state), H.V control (IC802) detects.
  • Page 10 12. High Voltage Output & FBT (Flyback Transformer). 18. Static Convergence Control Circuit. The high voltage output circuit is used for generating This circuit corrects the convergence of the screen by pulse wave to the primary coil of the FBT (Flyback supplying the convergence signal to the 4H (STC) coil Transformer (T701)).
  • Page 11: Adjustment

    ADJUSTMENT GENERAL INFORMATION 3) EEPROM → ALL CLEAR → Y(Yes) command. All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes <Caution> Do not run this procedure unless the several adjustments may be required. EEPROM is changed. All data in EEPROM (mode Adjustment should be following procedure and after data and color data) will be erased.
  • Page 12 12) Display color 15,0 box pattern(70x70mm) at mode 9. 6. Adjustment for Focus. 13) DRIVE ADJ command. 1) Display H character in full screen at Mode 7. 14) Set B-DRIVE to 100 at DRIVE of the alignment 2) Adjust two Focus control on the FBT that focus program.
  • Page 13: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK TROUBLE IN FUSE OK? FUSE (F901) (F901) CHECK TROUBLE IN D901 BRIDGE DIODE BRIDGE DIODE? (D901) CHECK C905(+) VOLTAGE TROUBLE IN 145VDC at 110V input 310VDC at 220V input IC901 CHECK TROUBLE IN...
  • Page 14 2. NO CHARACTER NO CHARACTER TROUBLE IN CHECK P301, SIGNAL CABLE, IC302 PIN 5, 6, 7 ? PC SIGNAL CHECK TROUBLE IN IC302 PIN 18, 19, 20, IC302, P302 PIN 6 (5V) ? CHECK IC303 PIN 1, 3, 5 TROUBLE IN PIN10 (12V), IC303 PIN 6 (80V) ?
  • Page 15 3. NO RASTER NO VIDEO (POWER INDICATOR GREEN or AMBER) CHECK AMBER POWER INDICATOR TROUBLE IN GREEN or AMBER ? P302 SIGNAL CABLE GREEN CHECK ROTATE SCREEN SCREEN CONTROL CONTROL KNOB TO KNOB OF FBT CLOCKWISE or COUNTER CLOCKWIES CHECK VOLTAGE AT D924/D926 CATHODE (191V) TROUBLE IN PRIMARY...
  • Page 16 4. NO VERTICAL DEFLECTION NO V-DEFLECTION (ONE HORIZONTAL LINE) CHECK TROUBLE IN IC601 Pin 2 T901 15V LINE (15V) ? CHECK TROUBLE IN IC601 PIN 4 T901 -12V LINE (-12V)? CHECK TROUBLE IN IC801 PIN 12 IC801 (SAWTOOTH WAVE)? TROUBLE IN IC601, V-CIRCUIT - 16 -...
  • Page 17 5. TROUBLE IN DPM STAND-BY/SUSPEND/ DPMS OFF MODE FAILURE CHECK CHECK PC, IC401 (MICOM) INPUT H/V SYNC SIGNAL (PC IS NOT GOING INTO PIN 40, 41 (H/V INPUT) DPM MODE) SIGNAL? NO H/V SYNC SIGNAL CHECK TROUBLE IN IC401 PIN 9, 8 X401, IC401 WAVEFORM? CHECK...
  • Page 18 6. NO DEGAUSSING NO DEGAUSSING CHECK TROUBLE IN IC401 PIN 6 IC401 (MICOM) (5V)? CHECK TROUBLE IN Q920 COLLECTOR D925 VOLTAGE (0.5V)? CHECK TROUBLE IN P901? P901 CHECK TROUBLE IN RL901? RL901 TROUBLE IN TH901, DEGAUSSING COIL - 18 -...
  • Page 19 7. TROUBLE IN OSD NO OSD CHECK TROUBLE IN IC301 PIN 4 P302 (5V) ? CHECK IC301 PIN 5 TROUBLE IN (NEGATIVE H-PULSE P302 COMES IN ?) CHECK IC301 PIN 18 TROUBLE IN (V-PULSE COMES IN?) P302 CHECK IC301 PIN 13, 14, 15 TROUBLE IN (IS THERE ANY SIGNAL IC301, IC401...
  • Page 20 - 20 -...
  • Page 21: Exploded View

    COVER FS792G SCREW F-SIEMENS 17-2 3550TKK061R COVER FS792G SCREW F-SIEMENS 6871TVT292B PWB(PCB) ASSEMBLY ,VIDEO, FS792G VIDEO TOTAL FUJITSU SIMENS CA-114 6871TMT348B PWB(PCB) ASSEMBLY, MAIN, FS792G KLFSED FUJITSU SIMENS CA-114 TOTAL 3313T17272B MAIN TOTAL ASSEMBLY, FS792G FUJITSU SIMENS CA-114 - 21 -...
  • Page 22: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 23 DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C771 0CK6810K515 680P 50V K B TS C905 181-296F 330UF SMH(30*40) 400V M VNSN C772 0CK4710W515 470P 500V K B TS...
  • Page 24 DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D452 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1 D910 0DR153979AA 1N5397GP TP G.I DO201AD 600V 1 D453 0DS141489AB 1N4148 TP GRANDE DO-34 500MW 1...
  • Page 25 DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION COILs & COREs Q459 0TR127009AA KTA1270-Y(KTA562TM) TP KEC TO9 Q611 0TR320709AA KTC3207(KTC2482) TP KEC TO92L L304 0LA1000K119 100UH K 2.3*3.4 TP...
  • Page 26 DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R303 0RD0752Q609 75 1/4W(3 5% TA52 R421 0RD2001Q609 2K 1/4W(3 5% TA52 R304 0RD0332Q609 33 1/4W(3 5% TA52 R422 0RD4701Q609...
  • Page 27 DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R710 0RD0472Q609 47 1/4W(3 5% TA52 R826 0RN1002F409 10K 1/6W 1 TA52 R711 0RN1502F409 15K 1/6W 1% TA52 R827 0RN1002F409...
  • Page 28 DATE: 2002. 10. 28. DATE: 2002. 10. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R922 0RD5101Q609 5.10K 1/4W(3 5% TA52 SW901 6600M000020 2216F DAE JIN 30VDC 0.1A 250GF R923 0RD0152Q609 15 1/4W(3 5% TA52...
  • Page 29: Pin Configuration

    PIN CONFIGURATION M62501P /FP Teerminal Number and The facillty PIN CONFIGURATION(TOP VIEW) PIN NO. Symbol Functional Description PWM output terminal PWM OUT Power supply terminal Trigger Input terminal PWM OUT CAGC This pin is used to set oscillating frequency VREF CAGC This pin is used for AGC setting Output terminal of error signal...
  • Page 30: Schematic Diagram

    SCHEMATIC DIAGRAM IIC SDA IIC SCL DDC SDA DDC SCL NOTICE Since this is a basic schematic diagram. The value of components and some partial connection are sucject to be changed for improvement without notice. - 30 - - 31 -...
  • Page 31: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. CONTROL BOARD (Component Side) 2. CONTROL BOARD (Solder Side) 3. MAIN BOARD (Component Side) 4. MAIN BOARD (Solder Side) - 32 - - 33 -...
  • Page 32 Nov. 2002 P/NO : 3828TSO051B Printed in Korea...

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Fs792g

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