Asus MM19D Service Manual
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Asus MM19D Service Manual

Asus MM19D Service Manual

19" lcd monitor
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ASUS MM19D
SERVICE MANUAL
19" LCD MONITOR
MM19D
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 RE LIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
1

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  • Page 1 ASUS MM19D SERVICE MANUAL 19” LCD MONITOR MM19D 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 RE LIABILITY FOR...

  • Page 2: Table Of Contents

    ASUS MM19D Table of Content Revision List…………………………………………………………………………………………………………. 1. Monitor Description…………………………………………………………………………………………….. 2. LCD Monitor Description……………………………………………………………………………………….. 3. Operating Instructions………………………………………………………………………………………….. 3.1 General Instructions…………………………………………………………………………………………... 3.2 Front Panel Control……………………………………………………………………………….…………... 3.3 Adjusting the Picture………………………………………………………………………………………….. 4. Input/Output Specification……………………………………………………………………………………... 4.1 Input Signal Connector……………………………………………………………………………………….. 4.2 Power Supply Requirements………………………………………………………………………………… 4.3 Factory Preset Display Modes………………………………………………………………………………..

  • Page 3: Revision List

    ASUS MM19D Revision List Version Date Revision History TPV Model Name Apr-18-06 Initial Release T980KH4DTAUSNP...

  • Page 4: Monitor Description

    ASUS MM19D 1. Monitor Specifications Items Description Driving system TFT Color LCD Type HSD190ME13 Size 48.0cm(19.0") LCD Panel Pixel pitch 0.294mm (H) x 0.294mm (V) Viewable angle 160(H) 160(V)(CR>5) Response time 8 ms Sync. Type H/V TTL Input Signal 15Pin Analog...

  • Page 5: Lcd Monitor Description

    ASUS MM19D 2. LCD Monitor Description The LCD MONITOR will contain a main board, a power board, a keypad board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

  • Page 6: Operating Instructions

    ASUS MM19D 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located in front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.

  • Page 7: Adjusting The Picture

    ASUS MM19D 3.3 Adjusting The Picture Adjustment steps: 1. Press the MENU-button to activate the OSD window. 2. Press < or > to select the desired function. 3. Press the MENU-button to select the function that you want to adjust.
  • Page 8 ASUS MM19D Yellowish Select yellowish skin stone The image appears bluer. Cool (9300°K) Color Normal Normal image color. (7500°K) Temperature The image appears redder. Warm (6500°K) Brightness Adjust the brightness level Luminance Contrast Adjust the contrast level H-Position Adjust the horizontal position of the OSD...

  • Page 9: Input/Output Specification

    ASUS MM19D 4. Input/Output Specification 4.1 Input Signal Connector Analog Connector Pin No. Description Pin No. Description Green Logic Ground Blue Monitor Ground Monitor Ground DDC-Serial Data DDC-Return H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground VGA connector layout 4.2 Power Supply Requirement...

  • Page 10: Factory Preset Display Modes

    ASUS MM19D 4.3 Factory Preset Display Modes VESA MODES Horizontal Vertical Nominal Sync Nominal Sync Nominal Frequency Polarity Freq. Polarity Pixel Mode Resolution Total +/- 0.5kHz +/- 1 Hz Clock (MHz) 640x480@60Hz 800 x 525 31.469 59.940 25.175 640x480@72Hz 832 x 520 37.861...

  • Page 11: Panel Specification

    ASUS MM19D 4.4 Panel Specification 4.4.1 General Description 19”SXGA TFT LCD Panel 4 CCFLs Backlight System Supported SXGA (V:1024 lines, H:1280 pixels) Resolution Supported to 75Hz Refresh Rate LCD Timing Controller RoHS Compliance VESA Compatible 4.4.2 Display Characteristics...

  • Page 12: Optical Characteristics

    ASUS MM19D 4.4.3 Optical Characteristics...

  • Page 13: Electrical Characteristics

    ASUS MM19D 4.4.4 Electrical Characteristics 1. TFT LCD Module 2. Backlight Unit...

  • Page 14: Block Diagram

    ASUS MM19D 5. Block Diagram 5.1 Monitor Exploded View...

  • Page 15: Software Flowing Chart

    ASUS MM19D 5.2 Software Flowing Chart...
  • Page 16 ASUS MM19D REMARK: 1) MCU initialize. 2) Is the EEprom blank? 3) Program the EEprom by default values. 4) Get the PWM value of brightness from EEprom. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.

  • Page 17: Electrical Block Diagram

    ASUS MM19D 5.3 Electrical Block Diagram 5.3.1 Main Board Crystal LCD Interface 24MHz (CN503) (X601) Scalar IC TSU16AWK W79E632 (Include ADC, OSD) (U601) (U401) EPR_SDA EPR_SCL H sync V sync Key Board EEPROM Control M24C16 (U602) D-Sub Crystal 14.318MHz Connector...

  • Page 18: Inverter/Power Board

    ASUS MM19D 5.3.2 Inverter/Power Board AC input Bridge Rectifier Transformer Rectifier diodes EMI filter and Filter Start Circuit CN902 R906, R907 Feedback Over IC101 Voltage Circuit Protect Control IC ON/OFF OSC and DC Convert MOSFET Output Circuit Circuit Lamp Feedback...

  • Page 19: Schematic

    ASUS MM19D 6. Schematic 6.1 Main Board 715G1423-3-512 TSU16/56AK SCHEMATIC GNDR GNDR GNDG GNDG DDC_CLK VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 DDC_DAT GNDB GNDB ST_DET1 HSYNC HSYNC VSYNC VSYNC DVI_DET VCC2.5 DDCCI_SEL VCC3.3 VAA1 VAA2 VAA3 CLK+ CLK+ VAA4 CLK-...
  • Page 20 ASUS MM19D VCC5V+ VCC5V SOT-252 D202 U201 VCC12V R202 GS1D VCC1.8 VCC12V AZ1117D-1.8 CN201 　 1/16W VCC1.8 ON_OFF R201 4.7K 　 1/16W C210 C211 C212 VCC12V VCC12V D201 SS14 C201 R212 4.7K 　 1/16W 0.1uF 47uF/16V 0.1uF VCC5V+ VCC5V VCC5V...
  • Page 21 ASUS MM19D CN301 DB15 FB301 　 1/16W R301 　 1/16W C304 0.047uF FB302 1/16W R302 1/16W C305 0.047uF 　 　 FB303 　 1/16W R303 　 1/16W C306 0.047uF R304 1/16W C307 0.001uF 　 PC5V R325 C301 C302 C303 VGA_CON 　...
  • Page 22 ASUS MM19D VCC3.3 FB401 VCC1.8 FB402 VCC3.3 VCC1.8 600 OHM 600 OHM C405 C414 10uF/16V 10uF/16V VPLL VDVI VDPLL C406 C407 C408 C409 C410 C411 C412 C413 C415 C416 C417 C418 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF...
  • Page 23 ASUS MM19D PA[0..9] PA[0..9] LVA3P CN503 LVA3M LVACKP LVACKM LVB0M RXO0- RXO0+ LVB0P LVA2P LVB1M RXO1- RXO1+ LVB1P LVA2M LVB2M RXO2- RXO2+ LVB2P LVBCKM RXOC- RXOC+ LVBCKP LVA1P RXO3- RXO3+ LVB3M LVB3P LVA1M LVA0M RXE0- RXE0+ LVA0P LVA1M RXE1- RXE1+...
  • Page 24 ASUS MM19D VCPU VCPU RN602 RN601 R601 R602 C601 R607 1/16W 1/16W 　 　 R606 　 1/16W 　 1/16W 0.1uF 　 1/16W 4/2/2004-change Crystal from 20MHz to 24MHz 　 1/16W R644 R645 R646 C602 22pF 　 1/16W U601 X601 P1.0 P1.1...

  • Page 25: Power Board

    ASUS MM19D 6.2 Power Board 715G1349-3...
  • Page 26 ASUS MM19D...
  • Page 27 ASUS MM19D...
  • Page 28 ASUS MM19D...

  • Page 29: Pcb Layout

    ASUS MM19D 7. PCB Layout 7.1 Main Board 715G1423-3-512...

  • Page 30: Power Board

    ASUS MM19D 7.2 Power Board 715G1349-3 7.3 Key Board 715G1820-2...

  • Page 31: Maintainability

    ASUS MM19D 8. Maintainability 8.1 Equipments And Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual.

  • Page 32: Trouble Shooting

    ASUS MM19D 8.2 Trouble Shooting 8.2.1 Main Board No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the Adapter/Inverter section Measure U201 PIN2=1.8V U202 PIN2=3.3V...
  • Page 33 ASUS MM19D No picture (LED orange) No picture The button if X601 oscillate Replace X601 under control waveform is normal Check reset circuit of Check Correspondent component U601 is normal Measure U201 PIN2=1.8V U202 PIN2=3.3V Replace U601 Replace U201, U202...
  • Page 34 ASUS MM19D White screen White screen Measure Q204 base X601 oscillate waveform is normal is high level? Replace X601 Check Q204, Q203 is Check reset circuit of broken or CN503 solder? U601 is normal Check Correspondent Check Correspondent component. component.

  • Page 35: Inverter/Power Board

    ASUS MM19D 8.2.2 Power/Inverter Board 1) No power Check CN902 pin2,4 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C905 (+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901...
  • Page 36 ASUS MM19D 2.) W / LED, No Backlight Check CN902 pin2, 4 = 12V Check adapter board Check ON/OFF signal Check Main Board Check IC201 pin5=12V Change Q207, Q205, Q206, ZD203 Check IC201 PIN18 have the output of sawtooth wave at short...

  • Page 37: Keypad Board

    ASUS MM19D 8.2.3 Keypad Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally? Check Main Board...

  • Page 38: White-Balance, Luminance Adjustment

    6500 color temp. parameter is x = 313 ±20, y = 329 ±20, Y = 180 ±10 cd /m 3. Into Factory mode of ASUS MM19D: ① Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.
  • Page 39 ASUS MM19D 6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 7. Repeat above procedure (item 4,5,6) until chroma 7120 RGB value meet the tolerance =100±2 C. Adjust 6500 color-temperature 1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button) 2.

  • Page 40: Edid Content

    ASUS MM19D 10. EDID Content 112:...

  • Page 41: Bom List

    ASUS MM19D 11. BOM List T980KH4DTAUSNP Location Part No. for TPV Description Quantity 007G 5 L 65 COMPOUND PALLET 1.000 015G6207 L 3 PANEL BRACKET 1.000 015G6207 R 3 PANEL BRACKET 1.000 040G 152509 RECYCLE LABEL 1.000 040G 152512 RECYCLE LABEL 1.000...
  • Page 42 ASUS MM19D 095G 900590 WIRE HARNESS 1.000 095G8014 16599 WIRE HARNESS 1.000 0M1G 330 5128 SREW 4.000 0M1G 330 5128 SREW 4.000 0M1G1140 6128 SCREW 4X6 1.000 0M1G1730 6128 SCREW M3x6 7.000 0M1G3030 6 47 SCREW 4.000 0Q1G 330 6128 SCREW 4.000...
  • Page 43 ASUS MM19D 0Q1G 140 8128 SCREW 6.000 CN201 033G8027 12 WAFER 2*6P 2.0MM R/A 1.000 CN602 033G8027 16 WAFER 16PIN 2.0mm DIP 1.000 CN503 033G802724B H WAFER 1.000 040G 45762412B CBPC LABEL 1.000 C204 067G215B221 4H LOW E.S.R 220UF +-20% 25V 1.000...
  • Page 44 ASUS MM19D C921 065G306M2222BP 2200PF +-20% 400VAC 1.000 C926 067G215D471 4K ED 470UF 25V 1.000 C930 067G215L102 3R LOW E.S.R 1000UF +/-20% 16V 1.000 C929 067G215L102 3R LOW E.S.R 1000UF +/-20% 16V 1.000 C915 067G215L102 3R LOW E.S.R 1000UF +/-20% 16V 1.000...
  • Page 45 ASUS MM19D Q202 057G 417 4 PMBS3904/PHILIPS-SMT(04) 1.000 Q201 057G 417 4 PMBS3904/PHILIPS-SMT(04) 1.000 Q602 057G 417 6 PMBS3906/PHILIPS-SMT(06) 1.000 Q601 057G 417 6 PMBS3906/PHILIPS-SMT(06) 1.000 Q203 057G 763 1 A03401 SOT23 BY AOS(A1) 1.000 RN602 061L 125103 8 CHIP AR 8P4R 10KOHM +-5% 1/16W 1.000...
  • Page 46 ASUS MM19D R605 061L0603103 CHIPR 10K OHM +-5% 1/16W 1.000 R606 061L0603103 CHIPR 10K OHM +-5% 1/16W 1.000 R607 061L0603103 CHIPR 10K OHM +-5% 1/16W 1.000 R613 061L0603103 CHIPR 10K OHM +-5% 1/16W 1.000 R614 061L0603103 CHIPR 10K OHM +-5% 1/16W 1.000...
  • Page 47 ASUS MM19D R616 061L0603472 CHIPR 4.7K OHM +-5% 1/16W 1.000 R619 061L0603472 CHIPR 4.7K OHM +-5% 1/16W 1.000 R215 061L0603513 CHIP 51K OHM 1.000 R327 061L0603750 CHIPR 75 OHM+-5% 1/16W 1.000 R326 061L0603750 CHIPR 75 OHM+-5% 1/16W 1.000 R325 061L0603750 CHIPR 75 OHM+-5% 1/16W 1.000...
  • Page 48 ASUS MM19D C420 065G0603104 32 CHIP 0.1UF 50V X7R 1.000 C418 065G0603104 32 CHIP 0.1UF 50V X7R 1.000 C201 065G0603104 32 CHIP 0.1UF 50V X7R 1.000 C203 065G0603104 32 CHIP 0.1UF 50V X7R 1.000 C205 065G0603104 32 CHIP 0.1UF 50V X7R 1.000...
  • Page 49 ASUS MM19D D320 093G 39147 TZMC5V6 1.000 D319 093G 39147 TZMC5V6 1.000 D318 093G 39147 TZMC5V6 1.000 D304 093G 64 42 P BAV70 SOT-23 1.000 D601 093G 6432V LL4148-GS08 1.000 D324 093G 6433P BAV99 1.000 D303 093G 6433P BAV99 1.000...
  • Page 50 ASUS MM19D Q208 057G 60040A AM4512C-T1-PF SO-8 1.000 Q204 057G 60040A AM4512C-T1-PF SO-8 1.000 Q213 057G 759 2 RK7002 1.000 Q212 057G 759 2 RK7002 1.000 Q211 057G 759 2 RK7002 1.000 Q215 057G 759 2 RK7002 1.000 Q214 057G 759 2 RK7002 1.000...
  • Page 51 ASUS MM19D R212 061L0805153 CHIPR 15K OHM+-5% 1/8W 1.000 R111 061L0805153 CHIPR 15K OHM+-5% 1/8W 1.000 R245 061L0805155 CHIP 1.5M OHM 5% 1/8W 1.000 R912 061L0805203 CHIPR 20KOHM +-5% 1/8W 1.000 R225 061L0805205 CHIP 2M OHM 5% 1/8W 1.000 R115...
  • Page 52 ASUS MM19D R907 061L1206105 CHIP 1MOHM 5% 1/4W 1.000 R906 061L1206105 CHIP 1MOHM 5% 1/4W 1.000 R905 061L1206105 CHIP 1MOHM 5% 1/4W 1.000 R904 061L1206105 CHIP 1MOHM 5% 1/4W 1.000 R913 061L1206203 20K OHM 5% 1/4W 1.000 R910 061L1206221 CHIP 220 OHM 1/4W 1.000...
  • Page 53 ASUS MM19D C219 065G0805105 37 CHIP 1UF 50V Y5V 1.000 C222 065G0805105 37 CHIP 1UF 50V Y5V 1.000 C215 065G0805152 22 CHIP 0.005UF 25V X7R 0805 1.000 C241 065G0805152 22 CHIP 0.005UF 25V X7R 0805 1.000 C220 065G0805221 21 220PF 25V 5% 1.000...
  • Page 54 ASUS MM19D ZD202 093G 39S 24 T RLZ 5.6B LLDS 1.000 ZD201 093G 39S 24 T RLZ 5.6B LLDS 1.000 D101 093G3004 2 SR34 PAN JIT 1.000 PW1942HSU4AIP 19" LCD POWER BOARD FOR AI 1.000 715G1820 2 KEY BOARD 1.000...

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