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Acer AC511 SERIES Service Manual

Color monitor
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SERVICE GUIDE

COLOR MONITOR

ACER AC511 SERIES
41AS551-ACER-E

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Summary of Contents for Acer AC511 SERIES

  • Page 1: Color Monitor

    SERVICE GUIDE COLOR MONITOR ACER AC511 SERIES 41AS551-ACER-E...
  • Page 2 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 DATA :Feb-20-03...

  • Page 3: Table Of Contents

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

  • Page 4: Specifications

    1. SPECIFICATIONS FOR 5G SERIES COLOR MONITOR CRT : 38cm(15V) 90 Deflection, 29mm Neck, 0.28mm Dot Pitch, Non-Glare Screen Viewable image Size: 35cm (13.8") diagonal Display Color: Unlimited Colors External Controls: Power On/Off, OSD key, Function knob: Contrast, Brightness, H-Size, H-Center, V-Size, V-Center, ZOOM, Pincushion, Trapezoid, Rotation, Moire Reduce, Recall, Degaussing, Color Temperature.

  • Page 5: Precaution And Notices

    2. PRECAUTIONS AND NOTICES SAFETY PRECAUTIONS 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 6: Operating Instructions

    should be made to the original design of the monitor. Components shown in the shaded areas on the schematic should be replaced with exact factory replacement parts. The use of unauthorized substitute parts may create a shock, fire or other hazard. To determine the presence of high voltage, use accurate, high impedance, HV meter connected between second anode lead and CRT dag grounding device.

  • Page 7: Adjustment

    4. ADJUSTMENT 4-1 ADJUSTMENT 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 8 CONTRAST H-MOIRE REDUCE BRIGHTNESS V-MOIRE REDUCE H-CENTER R-GAIN H-SIZE G-GAIN V-CENTER B-GAIN V-SIZE R-BIAS ZOOM G-BIAS PINCUSHION R-BIAS TRAPEZOID 9300 COLOR TEMPERATURE PIN-BALANCE COLOR TEMPERATURE 6500 PARALLELOGRAM DEGAUSS ROTATION OSD EXIT RETURN E. To switches the input signal to the other Timing Mode. Please follow step C ~ D to get the optimum picture.
  • Page 9 D. The adjustment of 6500°K white Balance, May follow step A ~ C , with the x=313 ± 10, y=329 ± 10. E. Full white luminance: (a) Set mode 2 640×480 Fh: 31.5KHz full white pattern. (b) Image Size : H:260±4mm V:195±4mm. (c) Brightness set to raster just cut off and set the contrast to max.

  • Page 10: 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...
  • Page 11 DEFLECTION CIRCUIT The deflection circuit is achieved by a high performance and efficient solution IC 401 (TDA9115) for this monitor. The concept is fully DC controllable and can be used in applications with a micro-controller solutions. The TDA9115 provides sync. Processing with full auto sync. Capability, a flexible SMPS block and an extensive set of geometry control facilities.
  • Page 12 5-3 TRANSISTOR & DIODE CIRCUIT LOCATION CIRCUIT FUNCTION DESCRIPTION D901 ~ D904 Bridge Rectifier for AC Source D910 Clamp Diode for Snubber CKT D919 Rectifier for Output Voltage D922 Rectifier for Output Voltage D923 Rectifier for Output Voltage D925 Rectifier for Output Voltage D927 Rectifier for Output Voltage D929...

  • Page 13: Trouble Shooting Chart

    6.TROUBLE SHOOTING CHART 6-1 NO RASTER, CRT RELATIVE CIRCUIT PROBLEMS CHECK MAIN PCB POWER SUPPLY 70V, 15V, 80V CHECK POWER SAVING CIRCUIT, H-SYNC, V-SYNC SIGNAL Q909, Q910 CHECK THE HIGE VOLTAGE REFER ITEM S.M.P.S. OF CRT ABOUT 23.5 ~ 25.5KV CHECK FAILSAFE CKT IC401 PIN 25 RELATIVE CKT.
  • Page 14 2.ABNORMAL VIDEO LEVEL ON SCREEN CHECK THE VOLTAGE OF IC801 PIN 2, 16 ABOUT 8V CHECK 8V RELATIVE CIRCUIT CHECK THE SIGNAL INPUT OF R.G.B. ABOUT 0.7Vpp CHECK SIGNAL CABLE OR INTERFACE CARD. CHECK IC801 PIN 11 CLAMP PULSE CHECK THE IC801 PIN 11 RELATIVE CIRCUIT CHECK THE VIDEO OUTPUT OF IC801 PIN 13, 15, 18 ABOUT 4Vpp,...

  • Page 15: Abnormal Display

    6-2 ABNORMAL DISPLAY 1.NO SIGNAL ON SCREEN CHECK VIDEO IC801 VCC ABOUT 8V CHECK THE 12V PIN OF P802 CONNECTOR CHECK THE OUTPUT VOLTAGE OF IC801 PIN 13, 15, 18 ABOUT 3Vpp CHECK THE RELATIVE CIRCUIT OF IC801 PIN 2/PIN 16 Vcc CIRCUIT CHECK THE B+ VOLTAGE OF VIDEO PCB ABOUT 80V CHECK THE 80V RELATIVE CIRCUIT...

  • Page 16: No Blanking

    6-3 NO BLANKING CHECK THE RELATIVE CIRCUIT OF BLANKING CHECK THE RELATIVE CIRCUIT OF Q601, Q707 CHECK R859 ON VIDEO PCB, CHECK G1 RELATIVE CIRCUIT FBT PIN 5 ON MAIN PCB 6-4 HOR./OSC/DEF/HV CIRCUIT FAULT 1. NO RASTER (DISCONNECT WITH SIGNAL CABLE) CHECK IC401 PIN 29 ABOUT 12 VDC CHECK IC401 PIN 29 RELATIVE CIRCUIT CHECK IC401 PIN 26 WAVE FORM...

  • Page 17: Abnormal Horizontal Deflection

    6-5 ABNORMAL HORIZONTAL DEFLECTION 1. ABNORMAL HORIZONTAL WIDTH OF VIDEO READJUST H-WIDTH FUNCTION CHECK THE RELATIVE CIRCUIT OF Q404, Q405, & Q406 CHECK FBT B+ VOLTAGE ABOUT 70V AT FH=31KHz CHECK THE RELATIVE CIRCUIT OF SMPS. CHECK THE HV OF CRT ABOUT 24.5KV 2.

  • Page 18: Abnormal Vertical Scanning

    6-6 ABNORMAL VERTICAL SCANNING 1. ABNORMAL VERTICAL SIZE READJUST V-SIZE FUNCTION VALUE CHECK THE IC601 PIN 2 ABOUT 11.8V PIN 4 ABOUT -12V CHECK D601, C605 RELATIVE CIRCUIT CHECK VERT. OSC CIRCUIT CHECK THE VOLTAGE OF IC101 RELATIVE CIRCUIT READJUST V-SIZE FUNCTION VALUE CHECK IC401 PIN 20, 21, 22, 23 RELATIVE CIRCUIT 2.

  • Page 19: Poor Focus

    6-8 POOR FOCUS READJUST FOCUS CONTROL CHECK FOCUS CONTROL UNIT, FOCUS LEAD WIRE, CRT SOCKET & CRT 6-9 NO SOUND (OPTIONAL WITH AUDIO ONLY) CHECK IC501 ADJUST VOLUME CONTROL PIN 14 ABOUT 14V CHECK POWER SUPPLY CIRCUIT ENSURE THE SOUND SOURCE IS POWER ON CHECK IC501 IC501 FAILURE...

  • Page 20: Power Supply Trouble Shooting Chart

    6-10 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 EPENDING UPON H.SYNC FREQUENCY) CONSTANT OUTPUT : 6.3V, 14.5V, -12V, 80V BEAD SET ABNORMAL VARIABLE OUTPUT MAKE SURE THAT CHECK AC LINE...

  • Page 21: Mechanical Of Cabinet Front Dis-Assembly

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

  • Page 22: Parts List Of Cabinet

    PARTS LIST OF CABINET LOCATION S551VSHWAEN2R SPECIFICATION REMARK CMS551VAY2 CHASSIS FOR S551V ACER 1A 503501 47 CRT SCREW 5A 38 8 RUBBER WASHER BOARD 11A 112500 WIRE MOUNT 11A 115 1 FBT CLIP 12A 385 1 RUBBER FOOT 19A 403 5...
  • Page 23 LOCATION CMS551VAY2 SPECIFICATION REMARK AMS551VAY MAIN BOARD FOR S551V AC CRS551VAY CRT BOARD FOR S551V ACE 1A 421 4128 SCREW 11A 141 1 PCB SUPPORT 40A 581 26702 FAIL-SAFE LABEL 40A 581624 2B CHASSIS LABEL 84A 33 10 FUSE CLIP 85A 588 1 Small Iron Slice 89A173D2MHCRA...
  • Page 24 D902 93A 5255P52T 1N5408 PEC D903 93A 5255P52T 1N5408 PEC D904 93A 5255P52T 1N5408 PEC D922 93A304010E52T UF304G D923 93A3020 1352T EGP30D D925 93A304010E52T UF304G ★ F901 84A 7H315 SL FUSE 3.15A 250V LF-6183 H802 95A8013 11604 HARNESS H803 95A8013 6604 HARNESS H804A 95A8013 5 9...
  • Page 25 VR901 75A 335101 CFVR 100 OHM +-20% VR902 75A 335303 CFVR 30K OHM +-20% [GND] 9A 203 8 BRASS PIN [SW101] 77A 602 1 CJ TACT SWITCH TSVB-2 [SW102] 77A 602 1 CJ TACT SWITCH TSVB-2 [SW103] 77A 602 1 CJ TACT SWITCH TSVB-2 [SW104] 77A 602 1 CJ...
  • Page 26 C417 64A701J2240AT 0.22uF/50V +-5% C423 65A 444332 5T 3300PF 10% 50V Y5P C424 65A 444332 5T 3300PF 10% 50V Y5P C433 67A 305100 7T 10UF +-20% 50V C434 67A 309220 7T 22UF +-20% 50V C438 67A 309109 7T 1.0UF +-20% 50V C439 67A 309109 7T 1.0UF +-20% 50V...
  • Page 27 C946 63A212J2242AT 220NF 250V +-5% C947 67A 309479 7T 4.7UF +-20% 50V C950 65A 1K221 5T6052 220PF/1KV Y5P+-10% C955 65A 1K221 5T6052 220PF/1KV Y5P+-10% C961 64A 44J1031AT .01UF +-5% 100V C965 64A178J103 1T CL21X 0.01UF 100V +-5% C966 67A 309470 7T 47UF +-20% 50V C967 65A 1K101 5T6052...
  • Page 28 D931 95A 90 23 TIN COATED D939 93A 64 1152T DIODE 1N4148 D942 93A 64 1152T DIODE 1N4148 D960 95A 90 23 TIN COATED D990 93A 64 1152T DIODE 1N4148 D995 93A 64 1152T DIODE 1N4148 FB081 71A 55 9 T CORE RF BEAD RH 3.5X6X0 FB101 71A 55 9 T...
  • Page 29 J047 95A 90 23 TIN COATED J048 95A 90 23 TIN COATED J049 95A 90 23 TIN COATED J050 95A 90 23 TIN COATED J051 95A 90 23 TIN COATED J052 95A 90 23 TIN COATED J055 95A 90 23 TIN COATED J056 95A 90 23...
  • Page 30 J113 95A 90 23 TIN COATED J115 95A 90 23 TIN COATED J117 95A 90 23 TIN COATED J118 95A 90 23 TIN COATED J119 95A 90 23 TIN COATED J120 95A 90 23 TIN COATED J126 95A 90 23 TIN COATED J129 95A 90 23...
  • Page 31 Q407 57A 419503 T 3DG945P Q408 57A 419503 T 3DG945P Q420 57A 498 3 T HBF423 Q471 57A 420501 T PNP TRANSISTOR KTA733P Q601 57A 419502 T 3DG1815Y Q701 57A 419503 T 3DG945P Q702 57A 420501 T PNP TRANSISTOR KTA733P Q705 57A 498 3 T HBF423...
  • Page 32 R154 61A 60262252T CFR 6.2K OHM +-5% 1/6W R156 61A 60233252T CFR 3.3K OHM+-5% 1/6W R157 61A 60233252T CFR 3.3K OHM+-5% 1/6W R159 61A 17256052T CFR 56 OHM +-5% 1/4W R160 61A 60222152T CFR 220 OHM +-5% 1/6W R161 61A 60212252T CFR 1.2K OHM+-5% 1/6W R163 61A 17268252T...
  • Page 33 R433 61A 60222252T CFR 2.2K OHM +-5% 1/6W R434 61A 60239252T CFR 3.9K OHM+-5% 1/6W R436 61A 17268152T CFR 680 OHM +-5% 1/4W R439 61A 60233152T CFR 330 OHM+-5% 1/6W R440 61A 17256252T CFR 5.6K OHM +-5% 1/4W R441 61A175L18452T CFR 180K OHM +-5% 1/2W R442 61A 17222252T...
  • Page 34 R720 61A175L47352T CFR 47K OHM +-5% 1/2W R721 61A175L10252T CFR 1K OHM +-5% 1/2W R722 61A 60233252T CFR 3.3K OHM+-5% 1/6W R725 61A212Y11452T 110K 1/2W R726 61A 60210252T CFR 1K OHM+-5% 1/6W R727 61A175L82352T CFR 82K OHM +-5% 1/2W R728 61A 17256152T CFR 560 OHM +-5% 1/4W R729...
  • Page 35 R996 61A 60210352T CFR 10K OHM+-5% 1/6W R999 95A 90 23 TIN COATED ZD105 93A 3951652T TELEFUNKEN TZX5V1B ZD110 93A 3951752T TZX6V2C ZD112 93A 3951752T TZX6V2C ZD420 93A 3911352T ZD HZ20-2/HITACHI ZD420 93A 3952252T TZX20B ZD445 93A 39 8252T HITACHI HZ12A2 ZD610 93A 64 1152T DIODE 1N4148...
  • Page 36 C807 67A 309101 3T 100UF +-20% 16V C808 65A 44282013T 82PF +-5% NPO 50V C809 67A 305109 7T 1UF +-20% 50V C810 67A 309101 3T 100UF +-20% 16V C811 65A 44210113T 100PF +-5% NPO 50V C812 65A 44210113T 100PF +-5% NPO 50V C815 95A 90 23 TIN COATED...
  • Page 37 D855 93A 6431T52T BAV20 D856 93A 6431T52T BAV20 D857 93A 6431T52T BAV20 D858 93A 6431T52T BAV20 FB803 71A 55 19 T FERRITE BEAD 9X3.5X0.8 FB805 71A 55 19 T FERRITE BEAD 9X3.5X0.8 FB807 71A 55 19 T FERRITE BEAD 9X3.5X0.8 FB850 71A 55 9 T CORE RF BEAD RH 3.5X6X0...
  • Page 38 R829 61A 60210252T CFR 1K OHM+-5% 1/6W R830 61A 60239252T CFR 3.9K OHM+-5% 1/6W R831 61A 60243352T CFR 43K OHM +-5% 1/6W R854 61A 17211152T CFR 110 OHM +-5% 1/4W R855 61A 17211152T CFR 110 OHM +-5% 1/4W R856 61A 17211152T CFR 110 OHM +-5% 1/4W R857 61A 17222452T...
  • Page 39 LOCATION PARTS No. SPECIFICATION REMARK C108 65A 44222013T 22PF +-5% NPO 50V IC101 56A1125510 WT62P1 IC102 56A113312A M24C04-BN6 IC105 56A1131514 WT OSD IC J133 95A 90 23 TIN COATED X101 93A 22 43 H 12MHz PARTS LIST OF Q911 ASS'Y LOCATION PARTS No.
  • Page 40 95A205T 30052 Q403 57A 706506 2SC5928 Q406 57A 415 1 TR.NPN TIP122/FAIRCHILD R426 61A153M270 59 MOFR 27 OHM +-5% 3W R428 61A153M109 59 MOFR 1 OHM +-5% 3W PARTS LIST OF Q403/D408/Q406 ASS'Y LOCATION PARTS No. SPECIFICATION REMARK 5A 42501 UNDERLAY SLLICE 32A3028 8 MICA...
  • Page 41 LOCATION PARTS No. SPECIFICATION REMARK 750A59165AV 15" CPT CRT C426 63A210J1042CC 0.1UF +-5% 250V C450 65A 1K101 5T6285 100PF/1KV Y5P+-10% C480 65A 1K101 5T6285 100PF/1KV Y5P+-10% 95A201F 50102 R456 61A153M151 59 MOFR 150 OHM +-5% 3W R461 95A 90 23 TIN COATED R465 61A 17256252T...
  • Page 42 BLOCK DIAGRAM...
  • Page 43 BLOCK DIAGRAM (SMPS)

  • Page 44: Block Diagram (Deflection)

    IC BLOCK DIAGRAM IC101 IC104 UM6861/WT62P1 74LS14 DAC2 VSYNC1/INTV DAC1 HSYNC1 DAC0 DAC3 RESET_ DAC4 DAC5 DAC6 OSC0 DAC7 OSC1 P07/HSYNC0 P06/VSYNC0 [CE]P14 P05/DAC13 P13/HALFH1 P04/DAC12 P12/HALFH0 P03/DAC11 P11/AD1 P02/DAC10 P10/AD0 P01/DAC9 P16/INTE P00/DAC8 P31/SCL P30/SDA...
  • Page 46 IC102 24C04 HV GENERATOR MEMORY EEPROM ARRAY CONTROL CONTROL (128X8) LOGIC LOGIC XDEC PAGE LATCHES YDEC SENSE AMP R.W CONTROL IC601 TDA9302H FLYBACK GENERATOR POWER AMPLITIER THERMAL PROTECTION IC802 LM2468 Vin 1 Vin 2 Vin 3 Vout 3 Vout 2 Vout 1...
  • Page 47 IC901 3842 SET/ Vref Vref RESET U.V.L.O. INTERNAL LOGLC BIAS 1/2 Vref C.S. COMP COMP. LATCH OSCILLATOR Ct/Rt IC801 LM1269 To Other Video Channels H Blank H Flyback R OSD Clamp DC Clamp Restore Amp G OSD Analog/ Digital Contrast B OSD Vref OUT Select...

  • Page 48: Pcb Layout

    11 PCB LAYOUT 11-1 MAIN PCB LAYOUT S/POWER SW101 [SW101] [SW102] [SW103] SW102 SW105 SW103 EXIT LED3 SW104 LED1 R129 C407 C165 R127 R183 J142 (SW101) (SW104) J126 [SW104] (SW102) (SW103) J019 LED2 (EXIT) R410 C408 J140 R181 J143 J144 J160 J085 J141...
  • Page 49 11-2 CRT BOARD LAYOUT CRPC-D561V/D551V 715A833-1A C858C857C856 C828 IC803 C829 C827 J811 J809 C824 C823 FB807 C821 IC802 L806 L851 L803 D852 C851 C837 R872 L802 D853 R861 C834 L801 C864 C820 C826 L850 C822 C854 C835 R858 C809 C836 D851 R860 D850...

  • Page 50: Schematic Diagram

    12 SCHEMATIC DIAGRAM CMPC-S551V-2TACER H501 P601 CRPC-S551V-2TACER SHUTTLE CONTROL OSD R811 IC801 R830 C816 715A833-XX D803 R820 H802 56A539-5 P801 93A64- R857 R192 1/6W LM1269NA C815 C840 R804 11-52T R807 220K 1N4148 95A90-23 (NC) FROM AUDIO INPUT JACK R831 1/4W E601 1/6W R OSD...

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