Acer G195HQ manuale d’uso

1 Acer G195HQ Service Guide[...]

2 Service Guide V ersion and Revision Version Release Date Revision History Customer model TPV model A00 Sep-10-2009 Initial Release G195HQ T89AM6D8MXAFH2 T89AM5D8MXAFN2[...]

3 Copyright Copyright © 2009 by Acer Incorpo rate d. All rights rese rved. No part of this publicat ion may be repro duced, Transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, m echanical, m agnetic, optical, chemical, manual or otherwise, without th[...]

4 Preface Before using this information and the produ ct it supp orts, please read the following gene ral information. 1. This Service Guide provides you wi th all technical information relati ng to the BASIC CONFIGURATION decided for Acer's "global" product offering. To better fit local market requirements and e nhan ce product comp[...]

5 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 unsta ble trolley , sta nd, or table. I f the monitor falls, it can injure a person and cause serious damage to the appliance. Use only a trolley or st and recommended by [...]

6 T able of Content s Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………… ……… 7 Electrical Requirement s ……………………………………… 8 LCD Monitor General S pecification ……………………………………… 9 LCD Panel S pecification ……?[...]

7 Monitor Features Introduction Scope This short specification describe s the el ectrical, optical and functional performance requi rements fo r a 47cm (18.5”) TFT LCD color monito r with VGA&DVI compatible interface. Description The LCD monitor is designed with the latest LCD tec hnolo gy to provide a perfo rmance oriented produ ct wi th no [...]

8 Electrical Requirement s of G195HQ Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwi se specified. W arm up time ＞ 30 min. AC supply voltage 220V± 5 ％ , 50± 3 Hz Ambient temperature 20 ° C ± 5 ° C Humidity 50% ± 10% Display mode 1366 x 768, 60 Hz, all white e-color mode Set to “User[...]

9 LCD Monitor General Specification LCD Panel Driving system TFT Col o r L CD Pixel pitch 0.3(H) x 0.3(V) Contrast Ratio 1000 : 1 (typ) Response time 5ms(T yp.). 8ms(max) Luminance of White 250 cd/m 2 (T yp.) Input Separate Sync. H/V TTL H-Frequency 30kHz – 80kHz V -Frequency 55-75Hz Viewing a ngl e H:170°/ V :160° ( type)(CR>10) Display Col[...]

10 348.90 mm 288.95 mm 452.59 mm 60.00 mm 173.80 mm 261.18 mm G195H Q[...]

11 LCD Panel Specification of G195HQ This specification applies to the 18.5 inch-wi de Color a-Si TFT-LCD Module M185XW01.The display supports the WXGA - 1366(H) x 768(V) screen fo rma t and 16.7M colors (RGB 6-bits +Hi-FRC data). All input signals are 1-channel LVDS interface and this mo dule doesn ’t contain an inverter board for backlight. Gen[...]

12 Optical Specifications[...]

13 Factory Preset Timing of G195HQ[...]

14 Monitor Block Diagram The LCD MONITO R will contain a main board, a power boar d, and a key board whi ch house the flat panel control logic, brightness control logic an d DDC. The power board will prov ide AC to DC Inverter voltage to drive the backlight of p anel and the main board chip s each voltage. Power Board Flat Panel and CCFL backlight [...]

15 Main Board Diagram T89AM6D8MXAFH2 (Dual-Input Model) T89AM5D8MXAFN2 Flash Memory EN25F20 (U402) Panel Interface (CN301) Crystal 14.31818M HZ (X401) Key control Interface (CN402) Scalar IC TSUMU5PEHL-LF (Include MCU, ADC, OSD) (U401) D-Sub Connecto r (CN101) H sync V sync RGB DVI Connecto r ( CN102 ) D-Data D-Clock Flash Memory EN25F20 (U402) Pan[...]

16 Power Board Diagram DIM EMI filter S tart Re sist o r (R908) PWM Control (U901) T r ansformer AC input 14.5V ON/OFF Feedback Circui t T r ansformer (T801) MOSFET (Q803) Lamp 5V Bridge Rectifier and Filter Feedback Circuit Rectifier diodes Output Circui t PWM Control AM9000ES (U801) Power Switch (Q901) Photo coupler (U902) 5V 14.5V[...]

17 Software Flow Chart N Y 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18[...]

18 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 AUT O and SEL ECT key s pre ssed? 8) Enter factory mode. 9) Save the power key status into EEPROM. T urn on the LED and set it to green col[...]

19 Main Board Layout 715G2883 1 6 Symbol Description Sy mbol Description U401 TSUM1PEL PQFP-100 TSUMU5PEHL-LF PQFP-100(Dual-Input Model) CN302 WAFER U701 AP1 1 17E33L-13 CN701 CO NNECTOR 9P 2.0 U106 AZC099-04S SOT23-6L CN402 CONN 6PIN 2.0 U103 AZC099-04S SOT23-6L CN101 D-SUB 15PIN VERTICAL CONN WITH SCREW U402 EN25F20-100GCP 2Mb SOP-8 CN102 DVI 24P[...]

20 Inst allation To install the monitor to your host system , please follow the ste ps as given below: Steps 1. 1-1 Connect Video Cable a. Make sure both the monitor and computer are po wered-OFF. b. Connect the VGA video cable to the computer. 1-2 Digital Cable (Only Dual-Input Model) a. Make sure both the monitor and computer are po wered -OFF. b[...]

21 Att aching / Removing the Base Attaching: Align the base with the stand and push the base towards the top of the monitor. Removing: Depress the release hooks as indi cated first before removing the base and follow the arro w direction to remove it. Screen Position Adjustment T o optimize the viewing position, you can adju st the monitor tilt by [...]

22 O p e r a t i n g I n s t r u c t i o n s Press the power button to turn the monitor on o r of f. The other control buttons are located at front p anel of the monitor . By changing these settings, the picture can be adju sted t o your personal preference s. • The power cord sh ould b e connected. • Connect the video cable from the monitor to[...]

23 eColor Management (OSD) Operation instructions Step 1: Press “ ”Key to open the Acer eColor Managem ent OSD and access the scenario m odes Step 2: Press “ ” or “ ” to select the mode Step 3: Press “ AUTO “ Key to confirm the mode and exit the eColor menu. Features and Benefits Adjusting the OSD settings The OSD can be used for ad[...]

24 1 Press the MENU key to bring up the OSD. 2 Using the keys, sele ct Picture from the OSD. Then navigate to the picture el ement you wish to adj ust. 3 Use the / keys to adjust the sliding scales. 4 The Picture menu can be used to adj u s t the current Bri ghtness, Contrast,Colo u r Temp, Auto Config and other image-related qualities. Adjusting t[...]

25 Product information 1 Press the MENU key to bring up the OSD. 2 Using the keys, sele ct Information from the OSD. Then the basi c info rmation of LCD monitor will sh ow up for current input.[...]

26 How to Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feat ure This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC ST ANDARD. It allows the monitor to inform the host system of its identity and, depending o n the level of DDC used, communicate additional information about it s di splay capabilities. The DDC[...]

27 Machine Disassembl y This chapter contains step-by-step pro cedures on how to disassemble the monitor- G195HQ for maintenance. The tool for disassembly is as follows: Screwdriver, Hexagonal screwdriver, Putty knife. Disassembly Procedure 1.Lay the monitor on a flat, soft and clea n surface. 2.Press the button remarked in green the remove the bas[...]

28 4.Remove the rear cover . Pry the monitor up then find out the hooks’ position, use the t ool (like the picture or other ca rd) to insert into the gap of bezel and rear cove r .[...]

29 T urn over the monitor and take off the re ar cover . 4. Remove the bezel. Disconnect the connector remarked in green. PS: be careful to Disconnect the Key board connector , because the keyboard connector maybe damage. The cable connect the main board and key board[...]

30 Remove the 2 screws remarked in red. Remove the lamp connectors to remove the panel. Put attention to the L VDS cable. L VDS CABLE[...]

31 6. T urn over the main frame and remove the fou r screws remarked in red and discon nected remarked in green to remove the main board and powe r board. Remove the speakers.(Optional) Main board Power board[...]

32 7.The panel[...]

33 T r o u b l e s h o o t i n g This chapter provides troubleshooti ng information for the G195HQ: 1.Main Board 1) No Power Chapter 4 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 Check if X401 oscillate waveforms are normal Measure U701 Pin2[...]

34 2) No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Replace X401 Measure U701 Pin2=3.3V , C704(+)=1.8V Check Corre spondent component Replace U401 X401 oscillate waveform is normal Check U701, Q702 and Q7 03 OK OK OK OK OK NG NG NG NG Check reset c ircuit of U401 is normal Check HS/[...]

35 3) Panel Power Circuit White screen Measure Q302 base is low level? X401 oscillate waveform is normal Check CN301 is solder and Q302, Q301 is OK? Check Correspondent component. Replace P ANEL Check Correspondent component. Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset c ircuit of U401 is normal[...]

36 2. Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Ke y Board Is Button Switch normally? Replace Button Switch Y NG NG Is Key Pad Board normally? Replace Key Board Y NG Y Check Main Boa rd[...]

37 3. Power Board 1) No power Check CN902 PIN6, 7 = 5V Check AC line volt 1 10V or 220V Check AC input Check the voltage of C9 07 (+) Check bridge rectified circuit and F902 circuit Check sta rt voltage for the pin8 of U9 01 Check R908 and Chan ge U901 NG Check the auxiliary voltage is bigger than 1 1V and smaller than 25V 1) Check U901 2) Check D9[...]

38 2.) No Backlight Check C81 1(+)=14.5V NG OK Check adapter or MB Check ON/OFF sign al Check Interface board NG OK Check U801 PIN1 1,14 have the output of square wave at short time NG OK Change U801 Check Q803 PIN5, 6, 7, 8 have the output of square wave at sh ort time. NG OK Check Q 803 Check the output of T801 Check connect er & lamp OK NG C[...]

39 Connector Information D-sub connect and DVI connect: 15-Pin Color Display Signal Cable 24-Pin Color Display Signal Cable (Dual-Input Model ) Chapter 5[...]

40 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla cea ble Unit) lis ting in g lobal configurations of G195HQ. Refer t o this chapter whenever ordering for parts to repair o r for RMA (Return Merchandise Authori zation ). NOTE: Please note WHEN ORDERING FRU PARTS, that y ou sho uld ch eck the most up-to-date informatio[...]

41 Item Description TPV Part No. Acer Part No. Q`ty 1 BEZEL L185W A-9acer5 A34G1522AEMA1B0130 60.LJM0B.001 1 2 KEY BUTT ON A33G0779AEM 1L0100 N/A 1 3 POWER BUTTON A33G0780AEM 1L0100 N/A 1 4 LENS A33G0768 1 1C0100 N/A 1 5 MAINFRAME A15G0933101401 A15G0933101301 (Dual-In put Model) 60.LJM0B.008 60.LJM0B.009 (Dual-Input Model ) 1 6 REAR COVER L205W A-[...]

42 Part List Above picture show the description of the followin g co mponent. Picture Description TPV Pa rt No. Acer Part No. Main_frame A15G0933101401 A15G0933101301 (Dual-Input Model) 60.LJM0B.008 60.LJM0B.009 (Dual-Input Model) Bezel A34G1522AEMA1B0130 60.LJM0B.001 Panel 750GLU185X1414N0 00 LK.18005.016 Rear Cover A34G1523AEM 4B0100 A34G1523AEM [...]

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.002 Hinge A37G0137 1 60.LJM0B.004 Base A34G1521AEM 1B0100 60.LJM0B.007 Bracket Base A15G0932101 N/A LVDS ASS'Y 095G8018 3X H60 50.LEF0B.002[...]

44 D-SUB Cable 089G 7 28 CAA DB 50.LAL0B.002 DVI Cable (Dual-Input Model) 089G1748HAA AC 50.LAN0B.003 Power Cord 089G404A18N CX 50.LBT0B.004[...]

45 S c h e m a t i c D i a g r a m Main Board T89AM6D8MXAFH2 (Dual-Input Model) F B109 300 OHM 1 2 RX 2N 2 ESD_VCC 2 DDC2_ SCL C110 0. 047uF C102 0. 047uF G ND PO WER H_S y nc R129 10R 1/16W 5% DSUB _S CL DDC1_ SDA R105 100R 1/ 16W 5% DS UB_ G- 2 ESD _VC C1 C BPC 9M6AFQH E Acer G185H D ual Only B 26 Tuesday , Sept em ber 01, 2009 < 称爹 > 2[...]

46 PA9 RX O3 - C3 01 0. 1uF / 16V CN3 0 2 CO NN 2 4 6 8 10 12 14 1 3 5 7 9 11 13 D PPW R _ ON # 2 LVA3P A O3401L LVB0M LVB0P RX E C+ PB3 PA8 C3 03 NC RX E0 + PB7 LVA3M LVB0P PA5 LVB1M PB1 R 302 4K7 1/ 16W 5% PA2 P B[0 ..9 ] RX E1 + RX E3 + LVA3M PA6 RX E2 + CM VCC LVB1P LVA1P RX O1 + RX E 2- 3 LVBC KM PA0 LVAC KM LVA3M PB9 LVB3M RX E 3 - P B[0 ..9 [...]

47 FB 70 2 300 OH M 252 D702 VC C 3. 3 C71 0 0. 1uF 16V R 703 10K 1/ 16W 5% U 701 AP1117E33LA 1 2 3 VSS VOU T VI N C 709 0. 1uF / 16V D7 02 BAT54C 3 1 2 Mut e 2 R 706 1K 1/ 16W 5% V CC3 .3 F B703 300 OH M CM VCC 3.3 OHM 2W 0R05 1/4W MVC C C 712 NC TSUMO58CWHL F B701 NC U701 R 709 NC F B704 NC D VI _5V C 713 NC on_BAC KLI GH T 2 Mu t e 3.3 OHM 2W NC[...]

48 R409 100R 1/ 16W 5% VCC 1.8 4 CM VCC DSUB_ H 1 PB1 R450 100K 1/16W 5% Q401 NC R41 2 10K 1/16W 5% MVC C PA7 RX CN 1 PB3 C40 6 0.1uF /16V C41 6 NC VCC3 .3 PB[0. . 9] 3 CM VCC FB4 02 300OHM DDC2_ SDA 1 VDD P MSC L PB8 VCC3 .3 PANEL _ID # 4 C40 3 0.1uF /16V + C43 7 10U F5 0V RX 2P 1 PA[0. . 9] 3 PA8 C41 3 0. 1uF / 16V C41 7 0.1uF /16V VCC 3.3 Volum [...]

49 T89AM5D8MXAFN2 VGA_B+ V_Sy nc C11 1 0.047uF D1 04 BAT54C 3 1 2 VGA_G+ C1 13 5pF/ 50V R1 01 100R 1/ 16W 5% U1 01 NC / M24C02-WMN6TP 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SD A SC L WP VC C VGA_B- R12 5 4K7 1/ 16W 5% 候綼　 U1 0 3 C1 05 5pF/ 50V DS UB _S DA R1 24 4K7 1/16W 5% FB 1 0 2 BEAD 1 2 C1 01 NC DDC_ WP 2 R1 23 NC DS UB _G + 2 VGA_G+ C10 4 22pF CM[...]

50 LVA2M PB2 LVA0M RX E3 - LVB2M RX E 0+ LVA1M PPW R _ ON # 2 LVB2P PB1 PA4 LVA2P LVB0M LVB3P PAN EL_VC C LVACKP RX E3 + PAN EL_VC C LVAC KP 1 PA9 LVA1M RX EC- RX E 3- A O3401L C3 02 0. 1uF / 16V PB4 P A[0 ..9 ] LVA1M RX E2 - RX EC+ LVA2P LVA0M RX O3 - LVBC KP Q302 2N 3906S- R TK/PS RX OC- S RX O1 - RX O2 + LVA0P LVACKM PA7 LVBCKP PA0 PB3 RX E 3+ L[...]

51 R7 0 2 10K 1/16W 5% MV C C R7 1 0 NC R7 08 N C / 2. 2 O H M 2W D7 02 BAT 54C 3 1 2 D7 0 1 SM340A adj_BACKLI GHT 2 + C7 04 100uF25V Volume# C7 05 0. 1uF / 16V DS UB _5 V Q701 2N 3904S- RTK/ PS C7 08 0.1uF / 16V FB 70 2 300 OHM VCC 3. 3 R7 06 1K 1/16W 5% BKLT-VBR I MV C C VC T R L Volum e# 2 C7 11 0.1uF 16V VCC 3. 3 BKLT-EN VCC 1. 8 VC C3. 3 Q703 [...]

52 C410 0.1uF /16V VCC 3. 3 RX 2N 1 PB1 MSC L VCC 3.3 DSUB _B - 1 lock type R42 6 10K 1/ 16W 5% R413 10K 1/ 16W 5% DDC_WP 1 PA8 PB [0..9 ] 3 PA3 R42 3 0R05 1/16W CM VCC 7 AVD D PA1 R417 100R 1/16W 5% C43 4 0.1uF /16V VCC 3.3 RX CN 1 VCTRL PA [0..9 ] 3 VDVI KEY 1 PB9 R447 NC PA0 C409 0.1uF /16V PA9 C43 1 0.1uF /16V + C41 9 10UF 50V PB5 POWER_KEY # R[...]

53 Power board R904 220 OHM 2W +14.5V C916 0.001uF C927 0.047uF R925 2.43K OH M 1% 1/10W C900 0.0022U F C909 NC / 0. 22uF/ 275V Q901 FMA07N65GX C915 D904 FR 103 R930 100 OHM 1/4W R920 1K 1/10W 1% ! + C920 1000UF 25V - + BD901 KBP208G 2 1 3 4 R90 8 10K OHM 1/4W +-5% Q904 2SD1207T HS 3 HEAT SIN K(D 906_5V/ 2. 5A) 1 2 + C918 1000UF 25V ! R933 NC R934 [...]

54 RJ 804 0R05 1/ 4W 5% Q803 P8008HV 1 2 3 4 8 7 6 5 S1 G1 S2 G2 D1 D1 D2 D2 C814 1uF 25V OV1 LI1 OV2 + C811 470uF 25V RJ 803 0R05 1/ 4W 5% R809 100K 1/ 10W 5% C807 0. 0039uF /16V RJ 807 0R05 1/ 4W 5% R810 20K 1/10W 1% R815 10 OHM +-5% 1/10W T801 POW ER X'FMR 6 3 7 4 1 8 R808 10K 1/10W 5% RJ 806 0R05 1/ 4W 5% RJ 801 0R05 1/ 4W 5% C815 0.1uF 50[...]

55 Key board ZD0 05 NC/UDZSNP 5.6B LB ADC2 AUTO LB ADC1 LBADC1 ZD0 02 NC/UDZSNP 5.6B VOL- ECOLOR SW006 SW 1 2 4 3 5 C01 1 NC ZD 007 N C/ U DZ SN P5.6B 1 2 GN D ME NU POWER (GND) C0 09 NC R 002 2Kohm 1/ 10W +/ -1% CN001 SW002 SW 1 2 4 3 5 LED 001 LED 1 2 3 4 C N 001 CONN 1 2 3 4 5 6 7 8 L ED_ RED# MENU LED_GR N# AC ER 1 G s eries B 22 Th ursday , J [...]