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Asus MM19S Service Manual

19” lcd monitor
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ASUS MM19S

SERVICE MANUAL

19" LCD MONITOR
MM19S
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.
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  Summary of Contents for Asus MM19S

  • Page 1: Service Manual

    ASUS MM19S SERVICE MANUAL 19” LCD MONITOR MM19S 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 MM19S 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 MM19S Revision List Version Date Revision History TPV Model Name Apr-17-06 Initial Release T980KH4DBAUSAP Jul-20-06 Add TPV model T980KH4DKAUSAP in Item 12 T980KH4DKAUSAP...
  • Page 4: Lcd Monitor Description

    ASUS MM19S 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: Operating Instructions

    ASUS MM19S 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. Monitor Block Diagram Flat Panel and CCFT Drive.
  • Page 6: Front Panel Control

    ASUS MM19S • Connect the video cable from the monitor to the video card. • Press the power button to turn on the monitor position. The power indicator will light up. 3.2 Front Panel Control Power Button: When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
  • Page 7 ASUS MM19S 4. Press < or > to change the settings of the current function. 5. To exit and save, select the exit function, or leave the monitor alone for 10 seconds. If you want to adjust any other function, repeat steps 2-4.
  • Page 8: Input/Output Specification

    ASUS MM19S 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 OSD Setup V-Position Adjust the vertical position of the OSD OSD Timeout Adjust the OSD timeout...
  • Page 9: Power Supply Requirements

    ASUS MM19S 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 A/C Line voltage range : 100 V ~ 240 V : 50 ± 3Hz, 60 ± 3Hz A/C Line frequency range Input Current : 1.5A max at 100V;...
  • Page 10: Panel Specification

    ASUS MM19S 640x480@60Hz 800 x 525 31.469 59.940 25.175 640x480@72Hz 832 x 520 37.861 72.809 31.500 640x480@75Hz 840 x 500 37.500 75.00 31.500 800x600@56Hz 1024 x 625 35.156 56.250 36.000 800x600@60Hz 1056 x 628 37.879 60.317 40.000 SVGA 800x600@72Hz 1040 x 666 48.077...
  • Page 11: Display Characteristics

    ASUS MM19S RoHS Compliance VESA Compatible 4.4.2 Display Characteristics...
  • Page 12: Optical Characteristics

    ASUS MM19S 4.4.3 Optical Characteristics...
  • Page 13: Electrical Characteristics

    ASUS MM19S 4.4.4 Electrical Characteristics 1. TFT LCD Module 2. Backlight Unit...
  • Page 14: Block Diagram

    ASUS MM19S 5. Block Diagram 5.1 Monitor Exploded View...
  • Page 15: Software Flowing Chart

    ASUS MM19S 5.2 Software Flowing Chart...
  • Page 16 ASUS MM19S 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 MM19S 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 MM19S 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 MM19S 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 MM19S 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 MM19S 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 MM19S 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 MM19S 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 MM19S 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 MM19S 6.2 Power Board 715G1349-3...
  • Page 26 ASUS MM19S...
  • Page 27 ASUS MM19S...
  • Page 28 ASUS MM19S...
  • Page 29: Audio Board

    ASUS MM19S 6.3 Audio Board 715G1144-4NMV OUT_L OUT_R +12V PIN-3 CN202 MUTE PIN-1 VOLUME C202 C201 C203 470uF/16V 470uF/16V 0.1uF WAFER 2*7P 2.54mm U201 TDA7496L CN204 C205 CN203 C204 0.47uF R201 10K  OUTL 470uF/16V C206 0.47uF OUTR 10K  R203 R212...
  • Page 30: Pcb Layout

    ASUS MM19S 7. PCB Layout 7.1 Main Board 715G1423-3-512...
  • Page 31: Power Board

    ASUS MM19S 7.2 Power Board 715G1349-3...
  • Page 32: Audio Board

    ASUS MM19S 7.3 Audio Board 715G1144-4-NMV 7.4 Key Board 715G1820-2...
  • Page 33: Maintainability

    ASUS MM19S 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 34: Trouble Shooting

    ASUS MM19S 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 35 ASUS MM19S 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 36 ASUS MM19S 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 37 ASUS MM19S 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 38 ASUS MM19S 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 39: Keypad Board

    ASUS MM19S 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 40: 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 MM19S: 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 41 ASUS MM19S 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. Switch the MEM.channel to Channel 5 (with up or down arrow on chroma 7120) 3.
  • Page 42: Edid Content

    ASUS MM19S 10. EDID Content 112:...
  • Page 43: Bom List

    ASUS MM19S 11. BOM List T980KH4DBAUSAP Location Part No. for TPV Description 007G 5 L 65 COMPOUND PALLET 015G6207 L 3 PANEL BRACKET 015G6207 R 3 PANEL BRACKET 040G 457834 4A GP S/N LABEL FOR ID 040G 457842 2B PALLET LABEL...
  • Page 44 ASUS MM19S 095G8014 16599 WIRE HARNESS E095 095G8018 30634 LVDS 0M1G 330 5128 SREW 0M1G 330 5128 SREW 0M1G1140 6128 SCREW 4X6 0M1G1730 6128 SCREW M3x6 0M1G3030 6 47 SCREW 0Q1G 330 6128 SCREW 0Q1G 330 8 47 SCREW 3X8mm 705G980KF34082 19"...
  • Page 45 ASUS MM19S 015G6206 1 HINGE BRACKET 034G6202 GM19B REAR COVER 052G6025 11925 MYLAR 0Q1G 140 8128 SCREW CN204 033G3278 3 3P PLUG B3B-XHA/JST CN202 033G802414C H 2*7PIN DUAL ROW RIGHT ANGLE H 040G 581 26605 LABEL-P/N U201 056G 616 1...
  • Page 46 ASUS MM19S CN201 033G8021 2D U 3.5mm WAFER 040G 45762420A LABEL 25x6mm IC902 056G 139 3A PC123Y22FZOF NR901 061G 58050 WT NTC 5 OHM 5A R917 061G 20747052T 47 OHM 1/2W R914 061G152M398 64 0.39 OHM 2W C238 065G 3J1006ET...
  • Page 47 ASUS MM19S 705L 780 57 51 Q901 ASS'Y 705L 980 87 05 CN901 ASS'Y 705L 980 93 04 D910/D911 ASS'Y PW1942HSU3SMTP POWER BOARD FOR SMT R208 061L0603102 CHIPR 1K OHM +-5% 1/16W R207 061L0603102 CHIPR 1K OHM +-5% 1/16W R203...
  • Page 48 ASUS MM19S R209 061L0603000 RST SM 0603 JUMP MAX 0R05 R R204 061L0603000 RST SM 0603 JUMP MAX 0R05 R FB303 061L0603000 RST SM 0603 JUMP MAX 0R05 R FB302 061L0603000 RST SM 0603 JUMP MAX 0R05 R FB301 061L0603000...
  • Page 49 ASUS MM19S R613 061L0603103 CHIPR 10K OHM +-5% 1/16W R614 061L0603103 CHIPR 10K OHM +-5% 1/16W R615 061L0603103 CHIPR 10K OHM +-5% 1/16W R625 061L0603103 CHIPR 10K OHM +-5% 1/16W R626 061L0603103 CHIPR 10K OHM +-5% 1/16W R404 061L0603103 CHIPR 10K OHM +-5% 1/16W...
  • Page 50 ASUS MM19S R327 061L0603750 CHIPR 75 OHM+-5% 1/16W R326 061L0603750 CHIPR 75 OHM+-5% 1/16W R325 061L0603750 CHIPR 75 OHM+-5% 1/16W R651 061L0603912 CHIPR 9.1KOHM +-5% 1/10W C617 065G0603101 32 100PF +-10% 50V X7R C220 065G0603102 32 1000PF +-10% 50V X7R...
  • Page 51 ASUS MM19S C421 065G0603104 32 CHIP 0.1UF 50V X7R C201 065G0603104 32 CHIP 0.1UF 50V X7R C203 065G0603104 32 CHIP 0.1UF 50V X7R C205 065G0603104 32 CHIP 0.1UF 50V X7R C207 065G0603104 32 CHIP 0.1UF 50V X7R C210 065G0603104 32 CHIP 0.1UF 50V X7R...
  • Page 52 ASUS MM19S D323 093G 39147 TZMC5V6 D322 093G 39147 TZMC5V6 D321 093G 39147 TZMC5V6 D320 093G 39147 TZMC5V6 D319 093G 39147 TZMC5V6 D318 093G 39147 TZMC5V6 D304 093G 64 42 P BAV70 SOT-23 D601 093G 6432V LL4148-GS08 D324 093G 6433P...
  • Page 53 ASUS MM19S Q103 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q210 057G 60040A AM4512C-T1-PF SO-8 Q209 057G 60040A AM4512C-T1-PF SO-8 Q208 057G 60040A AM4512C-T1-PF SO-8 Q204 057G 60040A AM4512C-T1-PF SO-8 Q213 057G 759 2 RK7002 Q212 057G 759 2 RK7002 Q211 057G 759 2...
  • Page 54 ASUS MM19S R231 061L0805105 CHIP 1M OHM 5% 1/8W R223 061L0805105 CHIP 1M OHM 5% 1/8W R228 061L0805153 CHIPR 15K OHM+-5% 1/8W R212 061L0805153 CHIPR 15K OHM+-5% 1/8W R111 061L0805153 CHIPR 15K OHM+-5% 1/8W R245 061L0805155 CHIP 1.5M OHM 5% 1/8W...
  • Page 55 ASUS MM19S D205 061L1206000 CHIPR 0 OHM +-5% 1/8W F201 061L1206000 4 0 OHM 4A 1/4W R929 061L1206101 CHIP 100 OHM 5% 1/8W R907 061L1206105 CHIP 1MOHM 5% 1/4W R913 061L1206203 20K OHM 5% 1/4W R906 061L1206205 CHIP 2M OHM 5% 1/4W...
  • Page 56 ASUS MM19S C213 065G0805105 37 CHIP 1UF 50V Y5V C219 065G0805105 37 CHIP 1UF 50V Y5V C222 065G0805105 37 CHIP 1UF 50V Y5V C215 065G0805152 22 CHIP 0.005UF 25V X7R 0805 C241 065G0805152 22 CHIP 0.005UF 25V X7R 0805 C220...
  • Page 57 ASUS MM19S ZD203 093G 39S 24 T RLZ 5.6B LLDS ZD202 093G 39S 24 T RLZ 5.6B LLDS ZD201 093G 39S 24 T RLZ 5.6B LLDS D101 093G3004 2 SR34 PAN JIT PW1942HSU3AIP POWER BOARD FOR AI R212 061G 60220152T...
  • Page 58: Different Parts List

    ASUS MM19S 12. Different Parts List Diversity of T980KH4DKAUSAP compared with T980KH4DBAUSAP Location Part No. for TPV Description 040G 152509 RECYCLE LABEL 040G 152512 RECYCLE LABEL 089G 718GAA D SIGNAL CABLE 089G402A18N LS POWER CORD E750L 750GLH9013A 12 HSD 19" A10 PANEL...
  • Page 59 ASUS MM19S C930 067G215S102 3K ED1000UF 16V C905 067G215Z10115K ELCAP 100UF M 450V C905 067G305T10115H ELCAP 105℃ 100UF M 450V L903 073G 253 91 T CHOKE L903 073G 253 91 LS CHOKE BY LI SHIN L904 073L 174 26LSG COMMON CHOKE...
  • Page 60 ASUS MM19S Q206 057G 417 12 T KEC 2N3904S-RTK/PS Q902 057G 417 12 T KEC 2N3904S-RTK/PS Q102 057G 417 12 T KEC 2N3904S-RTK/PS Q903 057G 417 13 T KEC 2N3906S-RTK/PS Q103 057G 417 13 T KEC 2N3906S-RTK/PS Q210 057G 600 40...

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