Acer G185H Technical Information

1 Acer G195HQ Service Guide

10348.90 mm288.95 mm452.59 mm60.00 mm173.80 mm261.18 mmG195HQ

11LCD Panel Specification of G195HQ This specification applies to the 18.5 inch-wide Color a-Si TFT-LCD Module M185XW01.The display supports the WXG

12Optical Specifications

13Factory Preset Timing of G195HQ

14Monitor Block Diagram The LCD MONITOR will contain a main board, a power board, and a key board which house the flat panel control logic, brightnes

15Main Board Diagram T89AM6D8MXAFH2 (Dual-Input Model) T89AM5D8MXAFN2 Flash Memory EN25F20 (U402) Panel Interface (CN301) Crys

16Power Board Diagram DIMEMI filter Start Resistor (R908) PWM Control (U901) Transformer AC input 14.5V ON/OFF Feedback Circuit Transformer(T80

17Software Flow Chart N Y 12NY5Y N 10Y N12Y N 7YN64389141113YN15YN16 1719Y N 18

18Remark: 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)

19Main Board Layout 715G2883 1 6 Symbol Description Symbol Description U401 TSUM1PEL PQFP-100 TSUMU5PEHL-LF PQFP-100(Dual-Input Model) CN302 WAFE

2 Service Guide Version and Revision Version Release Date Revision History Customer model TPV model A00 Sep-10-2009 Initial Release G195HQ T89AM

20Installation To install the monitor to your host system, please follow the steps as given below: Steps 1. 1-1 Connect Video Cable a. Make sure both

21Attaching / Removing the Base Attaching: Align the base with the stand and push the base towards the top of the monitor. Removing: Depress the rel

22Operating Instructions Press the power button to turn the monitor on or off. The other control

23eColor Management (OSD) Operation instructions Step 1: Press “ ”Key to open the Acer eColor Management OSD and access the scenario modes Step 2:

241 Press the MENU key to bring up the OSD. 2 Using the keys, select Picture from the OSD. Then navigate to the picture element you wish to adjust.

25Product information 1 Press the MENU key to bring up the OSD. 2 Using the keys, select Information from the OSD. Then the basic information of

26How to Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feature This monitor is equipped with VESA DDC2B capabilities according to the VES

27Machine Disassembly This chapter contains step-by-step procedures on how to disassemble th

28 4.Remove the rear cover. Pry the monitor up then find out the hooks’ position, use the tool (like the picture or other card) to insert into the

29 Turn over the monitor and take off the rear cover. 4. Remove the bezel. Disconnect the connector remarked in green. PS: be careful to Disconnect

3Copyright Copyright © 2009 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced, Transmitted, transcribed, store

30Remove the 2 screws remarked in red. Remove the lamp connectors to remove the panel. Put attention to the LVDS cable. LVDS CABLE

316. Turn over the main frame and remove the four screws remarked in red and disconnected remarked in green to remove the main board and power board.

327.The panel

33Troubleshooting This chapter provides troubleshooting information for the G195HQ: 1.Main

342) No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Repl

353) Panel Power Circuit White screen Measure Q302 base is low level? X401 oscillate waveform is normal Check CN301 is solder and Q3

362. Key Board OSD is unstable or not working Is Key Pad Board connecting normally?Connect Key Board Is Button Switch normall

373. Power Board 1) No power Check CN902 PIN6, 7 = 5VCheck AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Check bridge rec

382.) No Backlight Check C811(+)=14.5V NGOKCheck adapter or MB Check ON/OFF signal Check Interface board NGOK Check U801 PIN11,14 have the output of

39Connector Information D-sub connect and DVI connect: 15-Pin Color Display Signal Cable

4Preface Before using this information and the product it supports, please read the following general information. 1. This Service Guide provides yo

40FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurat

41Item Description TPV Part No. Acer Part No. Q`ty1 BEZEL L185WA-9acer5 A34G1522AEMA1B0130 60.LJM0B.001 1 2 KEY BUTTON A33G0779AEM 1L0100 N

42Part List Above picture show the description of the following component. Picture Description TPV Part No. Acer Part No. Main_frame A15G0933101

43 Main Board 756GQ9CB BA256 00 756GQ9CB BA255 00 (Dual-Input Model) 55.LJM0B.001 55.LJM0B.002 (Dual-Input Model) Key Board KEPC9QKO 55.LJO0B

44D-SUB Cable 089G 728CAA DB 50.LAL0B.002 DVI Cable (Dual-Input Model) 089G1748HAA AC 50.LAN0B.003 Power Cord 089G404A18N CX 50.LBT0B.004

45Schematic Diagram Main Board T89AM6D8MXAFH2 (Dual-Input Mo

46PA9RXO3-C3010.1uF/16VCN302CONN2468101214135791113DPPWR_ON#2LVA3PAO3401LLVB0MLVB0PRXEC+PB3PA8C303NCRXE0+PB7LVA3MLVB0PPA5LVB1MPB1R3024K7 1/16W 5%PA2P

47FB702300 OHM252D702VCC3.3C7100.1uF 16VR70310K 1/16W 5%U701AP1117E33LA123VSSVOUTVINC7090.1uF/16VD702BAT54C312Mute 2R7061K 1/16W 5%VCC3.3FB703300 OH

48R409 100R 1/16W 5%VCC1.84CMVCCDSUB_H1PB1R450100K 1/16W 5%Q401NCR41210K 1/16W 5%MVC CPA7RXCN1PB3C4060.1uF/16VC416NCVCC3.3PB[0..9] 3CMVCCFB402300OHMD

49T89AM5D8MXAFN2 VGA_B+V_SyncC1110.047uFD104BAT54C312VGA_G+C1135pF/50VR101100R 1/16W 5%U101NC / M24C02-WMN6TP12345678A0A1A2VSSSDASCLWPVCCVGA_B-R1

5Precautions 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 D

50LVA2MPB2LVA0MRXE3-LVB2MRXE0+LVA1MPPWR_ON#2LVB2PPB1PA4LVA2PLVB0MLVB3PPANEL_VCCLVACKPRXE3+PANEL_VCCLVACKP1PA9LVA1MRXEC-RXE3-AO3401LC3020.1uF/16VPB4PA

51R70210K 1/16W 5%MVCCR710 NCR708NC/2.2 OHM 2WD702BAT54C312D701SM340Aadj_BACKLIGHT 2+C704100uF25VVolume#C7050.1uF/16VDSUB_5VQ7012N3904S-RTK/PSC7080.

52C4100.1uF/16VVCC3.3RX2N1PB1MSC LVCC3.3DSUB_B-1lock typeR42610K 1/16W 5%R41310K 1/16W 5%DDC_WP 1PA8PB[0..9] 3PA3R4230R05 1/16WCMVCC7AVDDPA1R417 100R

53Power board R904220 OHM 2W+14.5VC9160.001uFC9270.047uFR9252.43K OHM 1% 1/10WC9000.0022UFC909NC/0.22uF/275VQ901FMA07N65GXC915D904FR103R930 100 OHM

54RJ8040R05 1/4W 5%Q803P8008HV12348765S1G1S2G2D1D1D2D2C8141uF 25VOV1LI1OV2+C811470uF 25VRJ8030R05 1/4W 5%R809100K 1/10W 5%C8070.0039uF/16VRJ8070R05 1

55Key board ZD005NC/UDZSNP5.6BLBADC2AUTOLBADC1LBADC1ZD002NC/UDZSNP5.6BVOL-ECOLORSW006SW1 2435C011NCZD007 NC/UDZSNP5.6B12GNDMENUPOWER(GND)C009NCR002

6Table of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirements …………………………………

7Monitor Features Introduction Scope This short specification describes the electrical, o

8Electrical Requirements of G195HQ Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified.

9LCD Monitor General Specification LCD Panel Driving system TFT Color LCD Pixel pitch 0.3(H) x 0.3(V) Contrast Ratio 1000 : 1 (typ) Response time