E-machine E191W E191HQ E181H E161HQ Service Guide 1
Service Guide Version and Revision Version A00 Release Date Jul.
Copyright Copyright © 2008 by Emachine Incorporated. All rights reserved. No part of this publication may be reproduced, Transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Emachine Incorporated. Disclaimer The information in this guide is subject to change without notice.
Preface Before using this information and the product it supports, please read the following general information. 1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided for Emachine's "global" product offering. To better fit local market requirements and enhance product competitiveness, your regional office may have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra memory capability).
inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only. Precautions z Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. z 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. Use only a trolley or stand recommended by the manufacturer or sold with the monitor.
Table Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirements ……………………………………… 8 LCD Monitor General Specification ……………………………………… 9 LCD Panel Specification ……………………………………… 10 Support Timing ……………………………………… 14 Monitor Block Diagram ……………………………………… 16 Main Board Diagram ……………………………………… 17 Software Flow chart ……………………………………… 18 Main Board Layout ……………………………………… 20 Cable Connections ……………………………………… 21 Adjusting the viewi
Chapter 1 Monitor Features Introduction Scope This specification defines the requirements for the 19” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector and 24-pin DVI connector, also supports VESA DPMS power management and plug & play function. There is a build-in stereo audio amplifier with OSD control to drive a pair of speakers.
Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light : Dark room (<1 cd/m2) Viewing distance : 40 cm for LCD performance, 20 cm for LCD failures All specifications : ＞30 minutes Fully functional : 5 seconds Measuring equipment : Chroma 7120 signal generator or equivalent, directly Warm up time Connected to the monitor under test.
LCD Monitor General Specification 9
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.
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.
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.
Optical Specifications 13
Supported Timing 14
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.
E161HQ Main Board Diagram LCD Interface CN403(E191W) CN405(E161HQ&E181H/E191HQ) U401 U402 Scalar : NT68167FG QFP64 PM25LV010A (Include: MCU, ADC, OSD etc) D-SUB Connector (CN101) OSD Control Interface (Key board) CN401 17 Crystal 14.
Software Flow Chart 1 Y 2 3 N 4 N 5 Y 6 N 7 8 Y 9 N 10 11 Y N 12 N 13 Y Y 14 15 Y 17 18 N 19 Y 18 N 16
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. 9) Save the power key status into EEPROM. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light.
Main Board Layout Symbol Description Symbol Description U401 IC NT68167FG QFP64 CN404 WAFER 2*6P 2.0MM R/A X401 NXS12.
Cable Connections 21
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、 You are able to adjust the monitor’s angle from -5° to 15°. NOTES 1、 Do not touch the LCD screen when you change the angle. It may cause damage or break the LCD screen.
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. • The power cord should be connected. • 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.
Adjusting the Picture 25
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. This message will be flying. Cable Not Analog-Only Model: When the video cable is not connected, will show this message.
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. The DDC2B is a bi-directional data channel based on the I²C protocol. The host can request EDID information over the DDC2B channel.
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) A C B Fig 1 2. Remove the back cover.
Fig 3 1. Remove the front bezel,disconnect the connector remarked in green (Fig 4,5) Key board Fig 4 Fig 5 2.
3. Remove the screws marked in red and disconnect lamp connections to remove shield.
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.
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 NG Please reinsert and make sure the AC of 100-240 is normal OK Reinsert or check the power section NG Measure U404 PIN2=3.
2. No Picture (LED is orange) No picture NG The button if under X401 oscillate control NG Replace X401 waveform is normal OK OK Check reset circuit of U401 is normal Measure U404 PIN2=3.
3. Panel Power Circuit White screen Measure Q404 base NG is high level? X401 oscillate waveform is normal OK OK NG Check CN403(CN405: E191HQ/ E181H&E161HQ) is Check reset circuit of broken or Q405 is solder? U401 is normal Check Correspondent component. NG NG OK OK Replace U401 Replace PANEL 35 REPLACE X401 Check Correspondent component.
4.
5. Power board 715G2824 1C 2(E191W) 1.
(L) 2. W/LED No Backlight Check R805 =16V OK Check adapter circuit NG Check ON/OFF signal NG Check Interface board OK Check IC801 PIN12=5V Change ON/OFF NG OK Check IC801 PIN9，10 have the output of square wave at short time NG Check IC801 OK Check Q804,Q809 have the output of square wave at short time.
715G2510 1 AO(E191HQ&E181H) 1) No power Check L904 = 12V NG Check AC line volt 110V or 220V NG OK Check AC input Check the voltage of C905 (+) NG Change F901, Check BD901, IC901 OK Check start voltage for the pin3 of IC901 NG Check R904, R932, R933, Change IC901 OK Check the auxiliary voltage is bigger than 10V and smaller than 20V NG OK 1) Check IC901 2) Check R909/D901 circuit Check IC901 pin8 PWM wave NG Check IC901 OK Check Q901/D903/IC903/ZD921/ZD922 39
2.
715G2852 2(E161HQ) 1) No power Check CN902 PIN4,5 = 5V NG Check AC line volt 110V or 220V NG Check AC input OK Check the voltage of C907 (+) NG Change F901, Check BD901, IC901 OK Check start voltage for the pin3 of IC901 OK NG Check R904, R932, R933, Change IC901 Check the auxiliary voltage is bigger than 10V and smaller than 20V OK 1) Check IC901 NG 2) Check R909/D901 circuit Check IC901 pin8 PWM wave OK NG Check IC901 Check Q901/D903/IC902/D906/D907/ZD923 41
2.
Chapter 5 Connector Information The following figure shows the connector locations on the monitor: 1 5 6 10 11 15 15 – Pin Color Display Signal Cable (D-sub) Pin No. Description Pin No. Description 1. Red 9. +5V 2. Green 10. RS232 3. Blue 11. Monitor Ground RS232 12. DDC-Serial Data 5. DDC-Return 13. H-Sync 6. R-Ground 14. V-Sync 7. G-Ground 15. DDC-Serial Clock 8. B-Ground 4.
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/).
Exploded Diagram 45
Item Descripiton Item Descripiton 1 BEZEL L19WA-8GEM-1 11 SCREW 2 POWER LOGO 12 SCREW 3 POWER-LENS 13 MAIN FRAME 4 FUNCTION-BUTTON-R 14 REAR COVER 5 FUNCTION-BUTTON-L 15 HINGE ASS'Y 6 KEPC 16 SCREW 7 PANEL 17 SCREW 8 PWPC 18 STAND 9 CBPC 19 BASE 10 SPK 20 FOOT 46
Part List Above picture show the description of the following component.
4 Shield 5 Panel 6 Power Board 7 Main board 48
Chapter 7 Schematic Diagram Main Board Power DSUB_5V U406 3 VIN VOUT 1 5VCC BKLT-VBRI BKLT-EN C_PANEL_INDEX Volume Mute Layout 2 4 BAT54C D401 D403 SM240A 1 2 3 4 5 6 7 8 9 VSS CN404 ノ U406 U404 2007/11/15 NC/AP1117E33LA 4 +5V 5VCC Volume# 2 VCC3.3 R448 100R 1/16W 5% CONN + C426 100UF25V C428 0.1uF/16V +5V VCC3.3 R457 10K 1/16W 5% +5V R441 NC BKLT-VBRI BL_ADJ 2 U404 AP1117D33LA C422 0.1uF/16V + C427 100UF25V VCC3.
Input R101 0R05 1/16W R102 100R 1/16W 5% V_Sy nc R103 100R 1/16W 5% R105 2K2 1/16W 5% R106 2K2 1/16W 5% 16 10 5 9 4 8 3 7 2 6 1 2 DDC_SDA 13 DSUB_SDA 12 11 17 R113 100R 1/16W 5% 1 R118 10K 1/16W 5% 30 OHM R104 2 BIN+ 2 VGA_DET 2 VGA_BVGA_B+ VGA_GVGA_G+ VGA_RVGA_R+ ZD103 UDZSNP5.6B 75R 1/16W 5% VGA_B- ZD104 UDZSNP5.
Scaler ADC_1.8 DVDD 0.1uF/16V 0.1uF/16V 100UF25V C410 0.1uF/16V C443 1uF 10V 1 1 1 1 1 1 1 C407 0.1uF/16V VCC3.3 1 1 R408 10K 1/16W 5% 100R 1/16W 5% 100R 1/16W 5% 100R 1/16W 5% WP SPI_SO SPI_CE R450 R451 100R 1/16W 5% 100R 1/16W 5% SPI_CK SPI_SI 14 15 HSIN VSIN BIN1+ BIN1SOG1I GIN1+ GIN1RIN1+ RIN1- CVDD_1.
Panel Interface CN405 for 1 channel LVDS E161Q and E181H CN405 2 2 2 2 2 2 T0M T0P T1M T1P T2M T2P 2 TCLK1M 2 TCLK1P 2 2 T3M T3P 23 21 19 17 15 13 11 9 7 5 3 1 CN403 for 1 channel LVDS E191W PANEL_VCC 24 22 20 18 16 14 12 10 8 6 4 2 CN403 PANEL_VCC R434 C420 220 OHM 1/4W 0.
Power board 715G2824 1C 2（E191W） D909 NC/31DQ10FC R918 L904 100 OHM 1/4W 100 OHM 1/4W + 3 3 1 2 C905 100uF/450V + C938 NC/1500pF2KV 4 R904 300K OHM 1/4W R903 100KOHM +-5% 2WS C906 1500pF2KV R905 300K OHM 1/4W 4 R906 300K OHM 1/4W D901 FR103 C908 22uF/50V D900 FR107 9 10 3 12 11 C918 680uF25V C932 R935 100 OHM 1/4W 1.5A(main PCB ) JUMP C929 0.
R801 R808 10K 1/10W 1% Q802 PDTC144WK Q801 PDTA144WK R810 15R 1/4W 5% R850 15R 1/4W 5% C825 18pF/3KV 1 R804 8 R806 1K 1/8W 3 R811 1.5K 1/8W 1 2 1 2 5 R812 1.5K 1/8W D D814 NC/SM260A 2A/60V C805 470uF/25V 4 3 2 1 1 S G D 2 6 7 8 S D815 NC / SM260A 2A/60V D R803 NC /1K 1/10W 5% HV LV OLP2 D802 BAV99 Q804 AM9945N-T1-PF 1 C819 1uF/16V ZD801 NC/RLZ6.8C Q812 NC/RK7002 C804 0.
+5V1 C609 1uF/25V +5V1 R607 5.6KOHM +-5% 1/10W R606 5.6KOHM +-5% 1/10W 0.47uF/16V R611 4.7KOHM +-5% 1/10W Q607 PMBS3906 C605 22uF/10V C611 100pF C606 C614 22uF/10V R608 0R05 1/8W C610 100pF 0.47uF/16V R610 27KOHM +-5% 1/10W R605 10K 1/10W 5% C601 R612 3.6KOHM +-5% 1/10W 4 Lin 5 3 2 Rin 1 SE/BTL VOLUME LINGND GND RINBY PASS SHUTDOWN LOUTVDD LOUT+ GND GND ROUT+ VDD ROUT- 9 10 11 12 13 14 15 16 CONN LOUTLOUT+ ROUT+ 4 3 2 1 ROUT- C608 1uF/25V C612 0.1uF/16V MUTE C613 0.
1 AO（E191HQ&E181H） BD901 1 4 1/4W R906 NC ZD906 RLZ22B C908 22uF/50V 1 + R915 RT NC VCC CS COMP VCC GND OUT 2 11 R961 100 C929 1/4W 0.001uF R962 100 1/4W 10 5 6 7 8 10 100KΩ 1% 1/8W 1/4W 12 R938 10K 1/8W C915 470uF/16V 3 150R 1/8W D905 SP1060 IC903 PC123X2Y FZOF ! FB901 BEAD R903 IC904 KIA431A-AT/P C909 470pF/25V ZD921 RLZ13B R925 1K 1/8W R902 1/4W 680K C921 0.
2 1 C839 1000pF J810 1 +12V 6 R855 33 1/4W F801 2 BEAD 0 1/4W Q801 PMBS3904 R804 100 1/8W C802 C824 470uF/25V 0.1uF + D810 NC 1 2 Q804 PMBS3906 1 ON/OFF C825 0.1uF/25V 3 4 G D S D G D 7 6 R856 33 1/4W R817 10K 1/10W D805 LL4148WP 3 4 1 DIM 1 D807 LL4148WP 6 R857 33 1/4W 2 + R850 22R 1/8W C805 0.1uF 3 Q812 PMBS3906 1 1 Q806 PMBS3904 2 3 C835 NC 4 D817 LL4148WP R858 33 1/4W T802 7 POWER X'FMR D S D G D 7 6 R822 1K 1/10W 1% 3 4 CN802 CONN 2 C823 0.
+5V 6 0.47uF/16V 9 0.47uF/16V U101 3 C103 + C102 C104 100uF/25V R104 PHONEJACK R105 10K 10K 1/10W 1/10W C101 0.47uF/16V 8 C105 0.47uF/16V 7 C106 0.47uF/16V 4 C107 0.
2（E161HQ ） 100 OHM 1/4W L904 1 100 OHM 1/4W R920 + 100 OHM 1/4W ! C907 100uF450V R904 300K OHM 1/4W C938 NC 100KOHM +-5% 2WS D900 FR107 R906 NC 2 5 7 8 R908 C906 1500pF2KV D907 2 C911 0.1uF 0.22uF/275V ZD906 RLZ22B + D901 FR103 C903 22uF/50V R909 5.1 OHM 1/4W 1 POWER X'FMR 5 6 7 8 R910 10R 1/4W ZD905 RLZ18B LD7552BPS ! R948 56 OHM +-5% 2WS F902 +5V1 R947 470R 1/8W NC 0R05 1/4W R952 1K 1/8W F903 L903 +5V 1.0uH Q901 2SK2645-54MR R962 100 OHM 1/4W C929 0.
CN803 C839 1500PF/50V 6 1 2 T801 POWER X'FMR 7 R855 15R 1/4W F801 +12V 0 OHM 1/4W R804 100R 1/8W Q801 PMBS3904 C807 0.1uF/25V C824 0.1uF Q802 AM9945N-T1-PF 1 8 S D Q808 PDTA144WK 2 ON/OFF Q804 PMBS3906 1 C825 0.1uF/25V C819 0.
+5V1 C609 1uF/25V R601 10K 1/10W 5% MUTE 8 7 6 5 4 3 2 1 PHONEJACK 4Lin 5 3 2Rin 1 R604 10K 1/10W 5% C601 0.47uF/16V R605 10K 1/10W 5% C606 0.47uF/16V CN601 IC601 SE/BTL VOLUME LINGND GND RINBY PASS SHUTDOWN LOUTVDD LOUT+ GND GND ROUT+ VDD ROUT- 0.47uF/16V R603 10K 1/10W 5% C603 VOL + 0.47uF/16V C604 100uF/25V C602 R602 10K 1/10W 5% 9 10 11 12 13 14 15 16 CN602 LOUTLOUT+ 1 2 3 4 ROUT+ ROUT- C612 0.
