eMachines E191W Service Manual
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eMachines E191W Service Manual

Service guide
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E-machine
E191W
E191HQ
E181H
E161HQ
Service Guide
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Summary of Contents for eMachines E191W

  • Page 1 E-machine E191W E191HQ E181H E161HQ Service Guide...
  • Page 2 Service Guide Version and Revision Customer Model Version Release Date Revision History TPV model E191W T9RMNFH8X7GYAN Jul.-25-2008 Initial Release E191HQ &E181H T9RMNFH8X7GKAN E161HQ T6RMNFH8X7GYAN...

  • Page 3: Trademark Acknowledgments

    Other brand and product names are trademarks and/or registered trademarks of their respective holders. Trademark acknowledgments Gateway and eMachines are trademarks or registered trademarks of Gateway, Inc. in the United States and other countries. All other brands and product names are trademarks or registered trademarks of their respective companies.
  • Page 4 ■ Do not expose the monitor to rain or use near water. If the monitor does get exposed to moisture, unplug it and allow it to dry for 24 hours. Call eMachines Customer Care for advice on whether the monitor is safe to turn back on.

  • Page 5: Special Notes On Lcd Monitors

    inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only. Precautions Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance.

  • Page 6: Table Of Contents

    Table Of Contents Chapter 1 Monitor Features ………………………………………… Introduction ……………………………………… Electrical Requirements ……………………………………… LCD Monitor General Specification ……………………………………… LCD Panel Specification ……………………………………… Support Timing ……………………………………… Monitor Block Diagram ……………………………………… Main Board Diagram ……………………………………… Software Flow chart ……………………………………… Main Board Layout ………………………………………...

  • Page 7: Chapter 1 Monitor Features

    This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more. Chart of E191W &(E181H /E191HQ)&E161Q M190PW01 (E191W) Panel...

  • Page 8: Electrical Requirements

    Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Dark room (<1 cd/m2) 40 cm for LCD performance, 20 cm for LCD failures Viewing distance Warm up time All specifications ＞30 minutes Fully functional 5 seconds...

  • Page 9: Lcd Monitor General Specification

    LCD Monitor General Specification...

  • Page 10: Lcd Panel Specification

    LCD Panel Specification 1.M19PW01(E191W) This specification applies to the 19 inch-wide clor TFT-LCD Module M19PW01. The display supports the WXGA+ （1440 （H） X 900(V)screen format and 16.7 colors。 All input signals are 2 Channel LVDS interface comlatible。 This module does not contain an inverter card for backlight...

  • Page 11: Optical Specifications

    Optical Specifications 2.M185B1-L01（E191HQ/E181H） M185B1-L01 is a 18.5” TFT Liquid Crystal Display module with 4 CCFL Backlight unit and 30pin1ch-LVDS interface. This module supports 1366 x 768 WXGA mode and can display up to 16.7M colors.The inverter module for Backlight is not built in。 LCD Panel Model...
  • Page 12 Optical Specifications 3. M156B1-L01 (E161HQ) M156B1-L01 is a 15.6” TFT Liquid Crystal Display module with 2 CCFL Backlight unit and 30pin 1ch-LVDS interface. This module supports 1366 x 768 WXGA mode and can display up to 16.7M colors. The inverter module for Backlight is not built in.
  • Page 13 Optical Specifications...

  • Page 14: Support Timing

    Supported Timing...

  • Page 16: Monitor Block Diagram

    Monitor Block Diagram The LCD MONITOR will contain a main board, a power board and a key board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel. Flat Panel and CCFL Drive.

  • Page 17: Main Board Diagram

    E161HQ Main Board Diagram LCD Interface CN403(E191W) CN405(E161HQ&E181H/E191HQ) U401 Crystal U402 Scalar : NT68167FG QFP64 14.318MHZ PM25LV010A X401 (Include: MCU, ADC, OSD etc) D-SUB Connector (CN101) OSD Control Interface (Key board) CN401...

  • Page 18: Software Flow Chart

    Software Flow Chart...
  • Page 19 Remark: 1) MCU initializes. 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 20: Main Board Layout

    Symbol Description U401 IC NT68167FG QFP64 CN404 WAFER 2*6P 2.0MM R/A X401 NXS12.000AC30F-BT-2 CN101 D-SUB 15PIN U401 IC NT68167FG QFP64 CN401 WAFER U404 IC AP1117D33L-13 TO252-3L DIODES CN403 WAFER(E191W) U102/U103 IC AZC099-04S SOT23-6L CN405 WAFER (E161HQ&E181H/E191HQ) U402 IC PM25LV010A-100SCE SOIC-8...

  • Page 21: Cable Connections

    Cable Connections...

  • Page 23: Adjusting The Viewing Angle

    Adjusting the viewing angle 1、For optimal viewing it is recommended to look at the full face of the monitor, then adjust the monitor’s angle to your own preference. 2、 Hold the stand so you do not topple the monitor when you change the monitor’s angle. 3、...

  • Page 24: Chapter 2 Operating Instructions

    Chapter 2 Operating Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. •...

  • Page 25: Adjusting The Picture

    Adjusting the Picture...

  • Page 27: Osd Message

    OSD Message a. Outline b. The Description for OSD Message Item Description Auto Config When Analog signal input, if User Press Hot-Key “Auto”, will show this message, and the Please Wait monitor do the auto config function. Input Not When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor Supported support range, will show this message.
  • Page 28 How To Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feature This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities.

  • Page 29: Chapter 3 Machine Disassembly

    Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure 1. Remove hinge cover, then remove two screws marked A-C to remove base. (Fig 1) Fig 1 2. Remove the back cover. (Fig 2-3) Fig 2...
  • Page 30 Fig 3 1. Remove the front bezel,disconnect the connector remarked in green (Fig 4,5) Key board Fig 4 Fig 5...
  • Page 31 3. Remove the screws marked in red and disconnect lamp connections to remove shield. (Fig 6-9) Fig 6 Fig 7 Fig 8 Fig 9...
  • Page 32 4. Remove the screws marked in red and the wire connect with power board to remove the boards. (Fig 10,11) Fig 10 Fig 11 6. The monitor disassembly completely. (Fig 12) Fig 12...

  • Page 33: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting This chapter provides troubleshooting information for the E191W: 1. 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 power section Measure U404 PIN2=3.3V,...
  • Page 34 2. No Picture (LED is orange) No picture The button if under X401 oscillate Replace X401 control waveform is normal Check Correspondent Check reset circuit of component U401 is normal Measure U404 PIN2=3.3V Replace U401 X401 oscillate waveform is normal Check CN401, U404 Replace X401 Check HS/VS from...
  • Page 35 3. Panel Power Circuit White screen Measure Q404 base X401 oscillate waveform is normal is high level? REPLACE X401 Check CN403(CN405: E191HQ/ E181H&E161HQ) is Check reset circuit of broken or Q405 is solder? U401 is normal Check Correspondent Check Correspondent component.
  • Page 36 4. Key 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 Board Is Key Pad Board normally? Check Main Board...
  • Page 37 5. Power board 715G2824 1C 2(E191W) 1. No Power No power Check to CN902 Pin3, 4 = 5 V Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, IC901 Check the voltage of C905(+) Check bridge retified circuit...
  • Page 38 (L) 2. W/LED No Backlight Check R805 =16V Check adapter circuit Check ON/OFF signal Check Interface board Check IC801 PIN12=5V Change ON/OFF Check IC801 PIN9，10 have the output of square wave at short time Check IC801 Check Q804,Q809 have the output of square wave at short time.
  • Page 39 715G2510 1 AO(E191HQ&E181H) 1) No power Check L904 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C905 (+) Change F901, Check BD901, IC901 Check start voltage for the pin3 of IC901 Check R904, R932, R933, Change IC901 Check the auxiliary voltage is bigger than 10V and smaller than 20V 1) Check IC901...
  • Page 40 2.) No Backlight Check F801=12V Check adapter and F801 Check ON/OFF signal Check Interface board or main board Check IC801 PIN12=15V Change on/off circuit Check IC801 PIN5 have triangle wave Change IC801 Check IC801 PIN9/PIN10 PWM wave Check IC801 Check Q802,Q803 Drain wave Check Q801/Q804/Q811/Q812 Check the output of T801, T802 Change T801, T802...
  • Page 41 715G2852 2(E161HQ) 1) No power Check CN902 PIN4,5 = 5V Check AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Change F901, Check BD901, IC901 Check start voltage for the pin3 of IC901 Check R904, R932, R933, Change IC901 Check the auxiliary voltage is bigger than 10V and smaller than 20V 1) Check IC901...
  • Page 42 2.) No Backlight Check F801=12V Check adapter and F801 Check ON/OFF signal Check Interface board or main board Check IC801 PIN12=15V Change on/off circuit Check IC801 PIN5 have triangle wave Change IC801 Check IC801 PIN9/PIN10 PWM wave Check IC801 Check Q802 Drain wave Check Q801/Q804/Q811/Q812 Check the output of T801 Change T801...

  • Page 43: Chapter 5 Connector Information

    Chapter 5 Connector Information The following figure shows the connector locations on the monitor: 15 – Pin Color Display Signal Cable (D-sub) Pin No. Description Pin No. Description Green RS232 Blue Monitor Ground RS232 DDC-Serial Data DDC-Return H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground...

  • Page 44: Chapter 6 Fru (Field Replacement Unit) List

    Chapter 6 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations.Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization). NOTE: Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel (http://aicsl.emachine.com.tw/spl/).

  • Page 45: Exploded Diagram

    Exploded Diagram...
  • Page 46 Item Descripiton Item Descripiton BEZEL L19WA-8GEM-1 SCREW POWER LOGO SCREW POWER-LENS MAIN FRAME FUNCTION-BUTTON-R REAR COVER FUNCTION-BUTTON-L HINGE ASS'Y KEPC SCREW PANEL SCREW PWPC STAND CBPC BASE FOOT...

  • Page 47: Part List

    Part List Above picture show the description of the following component. Item Picture Description Hinge&base Back Cover bezel...
  • Page 48 Shield Panel Power Board Main board...

  • Page 49: Chapter 7 Schematic Diagram

    Chapter 7 Schematic Diagram Main Board Power DSUB_5V U406 U404 　ノ Layout U406 NC/AP1117E33LA 2007/11/15 CN404 BAT54C VOUT D403 D401 5VCC SM240A BKLT-VBRI 5VCC BKLT-EN C_PANEL_INDEX Volume Volume# 2 Mute VCC3.3 R448 100R 1/16W 5% CONN VOUT ADJ(GND) C426 C428 100UF25V 0.1uF/16V U404...
  • Page 50 Input H_Sy nc R101 0R05 1/16W R102 100R 1/16W 5% HSIN 2 V_Sy nc R103 100R 1/16W 5% VSIN 2 R105 R106 C102 2K2 1/16W 5% 2K2 1/16W 5% 220pF C103 22pF FB102 CN101 R104 C101 DSUB_5V VGA_B+ BIN+ 2 R110 30 OHM 100R 1/16W 5%...
  • Page 51 Scaler VCC3.3 FB407 ADC_1.8 300OHM ADC_2.3 FB404 VCC3.3 DVDD 300OHM DVDD ADC_2.3 CVDD_2.3 C439 C433 C442 C406 ADC_1.8 1uF 10V 0.1uF/16V 1uF 10V 0.1uF/16V CVDD_1.8 U401 C431 C430 0.1uF/16V 0.1uF/16V FB405 300OHM CVDD_2.3 CVDD_1.8 C445 C444 C410 BIN+ BIN1+ 1uF 10V 0.1uF/16V BIN- BIN1-...
  • Page 52 Panel Interface CN405 for 1 channel LVDS E161Q and E181H CN405 CN403 for 1 channel LVDS E191W PANEL_VCC CN403 PANEL_VCC R434 C420 TCLK1M 220 OHM 1/4W 0.1uF/16V TCLK1P TCLK1P TCLK1M TCLK1P TCLK1M R433 C419 10K 1/16W 5% 1uF 10V R436...

  • Page 53: Power Board

    Power board 715G2824 1C 2（E191W） D909 NC/31DQ10FC R918 L904 100 OHM 1/4W 2A(INVERTER) R919 100 OHM 1/4W +16V FB904 C912 R920 BEAD 0.001uF ZD902 100 OHM 1/4W R946 RLZ18B 150 OHM 2W C917 FB902 1206 0 ohm 680uF25V C918 80OHM...
  • Page 54 CN801 28:28:2400 Lk:260mH CONN T801 R801 0R05 1/8W C801 18pF/3KV L801 +16V NC / L R802 CN802 100R 1/8W C825 CONN 18pF/3KV R804 0R05 1/8W R805 NC/4K7 1/10W 5% R810 Q802 R808 Q801 R850 15R 1/4W 5% 10K 1/10W 1% PDTC144WK PDTA144WK 15R 1/4W 5%...
  • Page 55 +5V1 +5V1 C604 R602 100uF/25V 10K 1/10W 5% R603 10K 1/10W 5% C609 1uF/25V 10K 1/10W 5% CN602 R609 IC601 APA2069JITUL CN601 CONN LOUT- R604 SE/BTL LOUT- PHONEJACK VOLUME 10K 1/10W 5% C601 0.47uF/16V LOUT+ LIN- LOUT+ C606 0.47uF/16V ROUT+ R605 RIN- ROUT+...
  • Page 56 715G2510 1 AO（E191HQ&E181H） 　 1/4W R918 R941 R945 R946 R944 　 1/4W 　 1/4W 　 1/4W 　 1/4W +12V 　 1/4W R919 L904 C912 1.1uH BD901 0.001uF ZD902 　 1/4W R920 RLZ13B C917 C918 C922 680uF/25V 680uF/25V 470uF/25V R943 　 1/8W Q903 ZD901...
  • Page 57 C839 1000pF T801 R817 R821 CN801 POWER X'FMR 10K 1/10W 1K 1/10W 1% CONN R855 D805 J810 　 1/4W LL4148WP C819 F801 0.0022uF +12V C801 BEAD 10pF/3KV 　 1/4W C802 C824 R801 D801 Q801 470uF/25V 0.1uF 1K 1/10W 1% BAV99 R804 PMBS3904 D810...
  • Page 58 C104 100uF/25V U101 TPA6021A4NE4 CN102 CN101 R104 　 1/10W C101 0.47uF/16V LOUT+ LIN+ LOUT+ C105 0.47uF/16V LOUT- LIN- LOUT- C106 0.47uF/16V ROUT+ RIN+ ROUT+ PHONEJACK R105 　 1/10W C107 0.47uF/16V ROUT- CONN RIN- ROUT- BY PASS R108 R101 1/10W 　 SHUTDOWN# FADE# C108...
  • Page 59 715G2852 2（E161HQ ） R918 100 OHM 1/4W L904 R919 +12V 1.0uH 100 OHM 1/4W C912 ZD902 0.001uF C930 RLZ13B R920 C922 R946 100 OHM 1/4W 470UF/25V 150 OHM 2W 0.1uF C917 C918 680uF/25V 680uF/25V T901 R943 BD901 Q903 470R 1/8W D906 KBP208G PMBS3904...
  • Page 60 CN803 CONN C839 T801 R821 1500PF/50V POWER X'FMR R817 1K 1/8W 10K 1/10W 1% R855 D805 15R 1/4W LL4148 C819 C801 F801 0.0022uF 30pF/3KV +12V 0 OHM 1/4W C802 R804 Q801 470UF/25V C824 R856 R801 D801 100R 1/8W PMBS3904 D810 0.1uF 15R 1/4W 1K5 1/10W 1%...
  • Page 61 +5V1 R602 10K 1/10W 5% C604 100uF/25V R603 10K 1/10W 5% C609 1uF/25V R601 10K 1/10W 5% MUTE IC601 CN602 LOUT- SE/BTL LOUT- PHONEJACK VOLUME R604 10K 1/10W 5% C601 0.47uF/16V LOUT+ LIN- LOUT+ R605 10K 1/10W 5% C606 0.47uF/16V ROUT+ RIN- ROUT+...

This manual is also suitable for:

E191hqE181hE161hq

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