Acer G195HQ Service Manual Download Page 53

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Power board

R904
220 OHM 2W

+14.5V

C916
0.001uF

C927

0.047uF

R925
2.43K OHM 1% 1/10W

C900

0.0022UF

C909
NC/0.22uF/275V

Q901
FMA07N65GX

C915

D904
FR103

R930 100 OHM 1/4W

R920
1K 1/10W 1%

C920
1000UF25V

BD901

KBP208G

R908
10K OHM 1/4W +-5%

Q904

2SD1207T

HS3
HEAT SINK(D906_5V/2.5A)

1
2

C918
1000UF25V

R933
NC

R934
NC

D907
IN4148

C924
0.1uF/16V

ZD901
MTZJ T-72 16B

C908
0.47uF/275V

F903

+5V1

CN901
SOCKET

C903

1000pF

C926
0.1uF/16V

R931
NC

D906

FMW-2156

C921
NC/1000uF25V

R914
43.2K OHM 1% 1/4W

R917
10R 1/4W 5%

R902

620K OHM 1/4W

C937

0.01uF/2KV

L901

30mH

DIM

+5V

ON/OFF

R935
NC

C912
0.1uF/25V

L907

GND1
GND

1
2

R928
1K 1/10W 1%

R906
1-5% 2WS

R909 100 OHM 1/4W

U902

PC123X2Y FZOF

R921
NC/100K 1/10W 1%

D903

FR107

MUTE

C913
22uF/50V

R924
0.39 OHM 2W +-5%

HS1
HEAT SINK(Q901)

1
2

F902
FUSE

U901

LD7576

1
2
3
4

CT
COMP
CS
GNDOUT

VCC

C907
82uF 450V

R919
150R 1/8W 5%

C911

1500PF2KV

D902
SB5150

R905
470R 1/10W 5%

+5V

R918

10K 1/10W 1%

F901

FUSE

R929 100 OHM 1/4W

D908
NC/IN4148

R932
NC

ACER 22" LCD

R923
220 OHM 1/4W

C902

1000pF

FB901
BEAD

NR901
NTCR

C914
470pF

PWPC9821AQMY

Custom

Saturday , August 15, 2009

715G2892-2-3

ODM MODEL

01.POWER

G2892-2-3-X-21-090817

OEM MODEL

Size

Rev

Date

Sheet

TPV MODEL

PCB NAME

称爹

T P V ( Top Victory Electronics Co . , Ltd. )

Key Component

絬

隔

瓜

絪

腹

R907
1K 1/10W 1%

R910 100 OHM 1/4W

D905 NC/31DQ06FC3

VOL

T901
POWER X'FMR

C925

1000uF M 16V

CN902

Wire Harness

C931
NC/470uF/16V

F801
0R05 1/4W 5%

U903
KIA431A-AT/P

C938

1000PF/250VAC

R900

620K OHM 1/4W

C922
470uF 16V

R901

620K OHM 1/4W

C917
0.001uF

C923
0.001uF

R916
3.65K OHM 1% 1/10W

R913

1.5 OHM 1/4W +-5%

L906

D901
NC/SR5150

HS2
NC/HEAT SINK(D906_5V/4A)

1
2

R903 100 OHM 1/4W

R912 100 OHM 1/4W

Summary of Contents for G195HQ

Page 1: ...1 Acer G195HQ Service Guide ...

Page 2: ...2 Service Guide Version and Revision Version Release Date Revision History Customer model TPV model A00 Sep 10 2009 Initial Release G195HQ T89AM6D8MXAFH2 T89AM5D8MXAFN2 ...

Page 3: ...buyer and not Acer Incorporated its distributor or its dealer assumes the entire cost of all necessary servicing repair and any incidental or consequential damages resulting from any defect in the software Intel is a registered trademark of Intel Corporation Pentium and Pentium II III are trademarks of Intel Corporation Other brand and product names are trademarks and or registered trademarks of t...

Page 4: ...erference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep...

Page 5: ...ose of the grounded plug z Unplug the unit during a lightning storm or when it will not be used for long periods of time This will protect the monitor from damage due to power surges z Do not overload power strips and extension cords Overloading can result in fire or electric shock z Never push any object into the slot on the monitor cabinet It could short circuit parts causing a fire or electric ...

Page 6: ...16 Software Flow chart 17 Main Board Layout 19 Installation 20 Chapter 2 Operating Instructions 22 User Controls 22 Front Panel Controls 22 eColor Management OSD 23 How to Adjust a Setting 23 How to Optimize The DOS Mode 26 Enter into the factory mode 26 Chapter 3 Machine Disassembly 27 Chapter 4 Troubleshooting 33 Chapter 5 Connector Information 39 Chapter 6 FRU Field Replacement Unit List 40 Exp...

Page 7: ...uct with no radiation 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 G195HQ Panel M185XW01 Signal Interface D Sub 15pin DVI 24pin Dual Input Model Sync Type Separate Compatible Color Temp User Ad...

Page 8: ...buted gray scales 0 700mv can be distinguished Color temperature 6500 K Brightness control The value under user mode Analog Input signal 700 mVss Picture position and size Factory preset value Viewing angle 90 H and V Viewing distance 40 cm for LCD performance 20 cm for LCD failures Ambient illumination Dark room 1 cd m2 Measurement systems The units of measure stated in this document are listed b...

Page 9: ...ension without stand 452 59 H x 288 95 V x 60 00 D mm Display mode 1366 x 768 60Hz EPA ENERGY STAR ON Mode 37W OFF Mode 1W Contrast control Set to The value under user mode which allows that the brightest two of 32 linear distributed gray scales 0 700mv can be distinguished Power Source 100 V 240 V 50 3Hz 60 3Hz Environmental Considerations Operating Temp 0 to 40 C Storage Temp 20 to 60 C Operatin...

Page 10: ...10 348 90 mm 288 95 mm 452 59 mm 60 00 mm 173 80 mm 261 18 mm G195HQ ...

Page 11: ...r a Si TFT LCD Module M185XW01 The display supports the WXGA 1366 H x 768 V screen format and 16 7M colors RGB 6 bits Hi FRC data All input signals are 1 channel LVDS interface and this module doesn t contain an inverter board for backlight General Specifications Block Diagram TFT LCD Module ...

Page 12: ...12 Optical Specifications ...

Page 13: ...13 Factory Preset Timing of G195HQ ...

Page 14: ... flat 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 Power Board Flat Panel and CCFL backlight Main Board Key board D SUB Signal CCFL Drive AC IN 100V 240V DVI Signal Dual Input model ...

Page 15: ...401 Key control Interface CN402 Scalar IC TSUMU5PEHL LF Include MCU ADC OSD U401 D Sub Connector CN101 H sync V sync RGB DVI Connector CN102 D Data D Clock Flash Memory EN25F20 U402 Panel Interface CN301 Crystal 14 31818MHZ X401 Key control Interface CN402 Scalar IC TSUM1PEL Include MCU ADC OSD U401 D Sub Connector CN101 H sync V sync RGB ...

Page 16: ...08 PWM Control U901 Transformer AC input 14 5V ON OFF Feedback Circuit Transformer T801 MOSFET Q803 Lamp 5V Bridge Rectifier and Filter Feedback Circuit Rectifier diodes Output Circuit PWM Control AM9000ES U801 Power Switch Q901 Photo coupler U902 5V 14 5V ...

Page 17: ...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 ...

Page 18: ... set it to green color Scalar initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interrupt request 14 Wake up the scalar 15 Are there any signals coming from analog port 16 Display No connection Check Signal Cable message And go into standby mode after the message disappears 17 Program the scalar ...

Page 19: ... 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 24PIN CONN F ATTACHED SCREW Dual Input Model U104 AZC099 04S SOT23 6L U105 AZC099 04S SOT23 6L Dual Input Model X401 14 31818MHZ 32PF 49US U107 AZC099 04S SOT23 6L Dual Input Model U106 AZC099 04S SOT23 6L Dual Input Model ...

Page 20: ...k of the monitor and connect the other end to the computer s port 1 3 Connect one end of the 19 pin HDMI cable to the back of the monitor and connect the other end to the computer s port Optional 2 Connect the Audio Cable Only Audio Input Model Optional 3 Connect power cord Connect the power cord to the monitor then to a properly grounded AC outlet 4 Power ON Monitor and Computer Power ON the moni...

Page 21: ... the release hooks as indicated first before removing the base and follow the arrow direction to remove it Screen Position Adjustment To optimize the viewing position you can adjust the monitor tilt by using both of your hands to hold the edges of the monitor as shown below The monitor can be adjusted to 15 degrees up or 5 degrees down ...

Page 22: ...ng Press the Empowering Key to open the Acer eColor Management OSD and access the scenario modes AUTO Auto Adjust Press this button to activate the Auto Adjustment function The Auto Adjustment function is used to set the HPos VPos Clock and Focus MENU OSD functions Press this button to activate the OSD menu Volume Up Down Press to adjust volume Only Audio Input Model Optional INPUT Input Key Use I...

Page 23: ...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 adjusting the settings of your LCD Monitor Press the MENU key to open the OSD You can use the OSD to adjust the picture quality OSD position and general settings For advanced settings please refer to following page Adjusting the picture quality ...

Page 24: ...to Config and other image related qualities Adjusting the OSD position 1 Press the MENU key to bring up the OSD 2 Using the directional keys select OSD from the on screen display Then navigate to the feature you wish to adjust Adjusting the setting 1 Press the MENU key to bring up the OSD 2 Using the keys select Setting from the OSD Then navigate to the feature you wish to adjust 3 The Setting men...

Page 25: ...25 Product 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 LCD monitor will show up for current input ...

Page 26: ...ill automatically switch to an OFF mode This reduces the monitor s internal power supply consumption After the video input signal is restored full power is restored and the display is automatically redrawn The appearance is similar to a Screen Saver feature except the display is completely off Pressing a key on the keyboard or clicking the mouse restores the display Using the Right Power Cord The ...

Page 27: ...The tool for disassembly is as follows Screwdriver Hexagonal screwdriver Putty knife Disassembly Procedure 1 Lay the monitor on a flat soft and clean surface 2 Press the button remarked in green the remove the base 3 Remove the two piece of cover hinge and the four screws remarked in red to remove the hinge assembly Chapter 3 ...

Page 28: ...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 gap of bezel and rear cover ...

Page 29: ... take off the rear 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 ...

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

Page 31: ...31 6 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 Remove the speakers Optional Main board Power board ...

Page 32: ...32 7 The panel ...

Page 33: ...hapter 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 3 3V C704 1 8V OK OK NG NG NG Check U701 Q702 and Q703 Replace U401 Replace X401 NG OK ...

Page 34: ...lace U401 Replace X401 Measure U701 Pin2 3 3V C704 1 8V Check Correspondent component Replace U401 X401 oscillate waveform is normal Check U701 Q702 and Q703 OK OK OK OK OK NG NG NG NG Check reset circuit of U401 is normal Check HS VS from CN101 is normal Replace X401 Check Correspondent component NG NG OK ...

Page 35: ...ase is low level X401 oscillate waveform is normal Check CN301 is solder and Q302 Q301 is OK Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK OK Replace X401 OK NG NG NG NG Check reset circuit of U401 is normal ...

Page 36: ...ard OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Board Is Button Switch normally Replace Button Switch Y NG NG Is Key Pad Board normally Replace Key Board Y NG Y Check Main Board ...

Page 37: ...eck bridge rectified circuit and F902 circuit Check start voltage for the pin8 of U901 Check R908 and Change U901 NG Check the auxiliary voltage is bigger than 11V and smaller than 25V 1 Check U901 2 Check D907 Q901 circuit OK OK NG Check D902 Q906 Q904 U902 ZD901 U903 OK Check U901 pin5 PWM wave OK NG NG NG OK NG Check U901 ...

Page 38: ... OFF signal Check Interface board NG OK Check U801 PIN11 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 short time NG OK Check Q803 Check the output of T801 Check connecter lamp OK NG Change T801 ...

Page 39: ...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 ...

Page 40: ... a part number change is made it will not be noted in the printed Service Guide For ACER AUTHORIZED SERVICE PROVIDERS your Acer office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide You MUST use the local FRU list provided by your regional Acer office to order FRU parts for repair and service of customer machines NOTE To scrap or to return the ...

Page 41: ...7 1 60 LJM0B 004 1 8 STAND FRONT A34G1524AEM 1B0100 60 LJM0B 005 1 9 STAND REAR A34G1525AEM 1B0100 60 LJM0B 006 1 10 HINGE COVER A33G0772AEM 1L0100 60 LJO0B 004 2 11 BASE A34G1521AEM 1B0100 60 LJM0B 007 1 12 BRAKET BASE A15G0932101 N A 1 13 RUBBER Q12G6300 95 N A 6 14 POWER BOARD PWPC9821AQMY 55 LJM0B 003 1 15 MAIN BOARD 756GQ9CB BA256 00 756GQ9CB BA255 00 Dual Input Model 55 LJM0B 001 55 LJM0B 00...

Page 42: ...ain_frame A15G0933101401 A15G0933101301 Dual Input Model 60 LJM0B 008 60 LJM0B 009 Dual Input Model Bezel A34G1522AEMA1B0130 60 LJM0B 001 Panel 750GLU185X1414N000 LK 18005 016 Rear Cover A34G1523AEM 4B0100 A34G1523AEM 3B0100 Dual Input Model 60 LJM0B 002 60 LJM0B 003 Dual Input Model Power Board PWPC9821AQMY 55 LJM0B 003 ...

Page 43: ...9CB 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 3XH60 50 LEF0B 002 ...

Page 44: ...44 D 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 ...

Page 45: ...A_PLUG RX2P C109 5pF 50V C101 NC C116 NC RX0P DDC2_SDA VGA_PLUG VGA_B V_Sy nc C105 5pF 50V R118 100R 1 16W 5 C122 1000pF C115 0 1uF 16V DVI_5V DSUB_SOG 2 V_Sy nc R132 10R 1 16W 5 C118 NC R114 100R 1 16W 5 DGND VGA_R VGA_B R135 10K 1 16W 5 R133 10K 1 16W 5 VGA_B R112 75R 1 16W 5 RXCP R106 2K2 1 16W 5 R122 NC 候綼 U107 DDC_WP 2 RX0N ESD_VCC VGA_R DDC1_SDA R104 1K 1 16W 5 ESD_VCC2 FB104 300 OHM D108 BA...

Page 46: ...VB3M LVA3P PB5 PA3 LVACKP RXE0 PB2 LVACKP LVA0P PA 0 9 RXE3 LVA1M G RXOC RXE1 Q302 2N3906S RTK PS LVA0M Q301 AO3401 PANEL_VCC RXO0 LVA0P C305 100uF25V LVA3P LVACKP LVA2P PANEL_VCC RXO1 LVA1P RXE2 LVA0P LVA2M RXE0 RXE2 2 S R305 0 OHM 5 1 8W PB0 PB8 LVB1M LVA1M LVBCKP LVA2M CBPC9M6AFQH E Acer G185H Dual Only A 3 6 Tuesday September 01 2009 称爹 3 0 OUTPUT G2883 1 6 X 37 090901 OEM MODEL Size Rev Date ...

Page 47: ...MVCC R708 NC 2 2 OHM 2W CBPC9M6AFQH E Acer G185H Dual Only B 4 6 Tuesday September 01 2009 称爹 4 0 POWER G2883 1 6 X 37 090901 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称爹 T P V Top Victory Electronics Co Ltd Key Component 絬隔瓜絪腹 VCC3 3 NC PANEL_ID 2 PANEL_ID lock type C704 100uF25V C705 0 1uF 16V BAT54C R705 10K 1 16W 5 DSUB_5V NC BKLT VBRI BKLT EN CMVCC CMVCC C701 0 1uF 16V C707 100u...

Page 48: ...LK HOLD VCC C421 47pF R425 100R 1 16W 5 C415 0 1uF 16V FB405 NC RX0N 1 R411 10K 1 16W 5 KEY1 PA2 MSCL RX0P 1 DET_CABLE 1 R408 10K 1 16W 5 MSDA R449 47K1 16W C433 0 1uF 16V C431 0 1uF 16V C419 10UF50V KEY1 EE_WP PB7 C410 0 1uF 16V HDCP_CTRL 1 RX2N 1 FB401 300OHM Mute 4 PA6 R442 NC R424 NC CBPC9M6AFQH E Acer G185H Dual Only C 5 6 Tuesday September 01 2009 称爹 5 0 SCALER G2883 1 6 X 37 090901 OEM MODE...

Page 49: ...9M5AFQN E Acer G185H Analog Only B 2 6 Tuesday September 01 2009 称爹 2 0 INPUT G2883 1 6 X 42 090901 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称爹 T P V Top Victory Electronics Co Ltd Key Component 絬隔瓜絪腹 DSUB_SOG 2 DSUB_R 2 VGA_R FB101 BEAD 1 2 C108 0 047uF R139 6K8 1 16W 5 VGA_B C112 NC R117 100R 1 16W 5 ESD_VCC DSUB_B 2 VGA_R C103 22pF C106 0 047uF R102 0R05 1 10W 5 ZD104 RLZ5 6B C11...

Page 50: ...D RXE1 LVB1M PA6 CBPC9M5AFQN E Acer G185H Analog Only A 3 6 Tuesday September 01 2009 称爹 3 0 OUTPUT G2883 1 6 X 42 090901 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称爹 T P V Top Victory Electronics Co Ltd Key Component 絬隔瓜絪腹 RXE1 Q301 AO3401 RXO0 LVA1P RXEC C305 100uF25V CN301 NC CONN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 RXE1 PA1 RXO3 CMVCC ...

Page 51: ...1 0 1uF 16V R701 0R05 1 4W VCC3 3 R705 10K 1 16W 5 Mute 2 lock type VCC3 3 BKLT EN C712 NC PANEL_ID C709 0 1uF 16V CMVCC CMVCC DVI_5V on_BACKLIGHT 2 FB703 300 OHM R704 4K7 1 16W 5 FB701 NC CN701 CONN 1 2 3 4 5 6 7 8 9 DGND 1 2 3 CBPC9M5AFQN E Acer G185H Analog Only B 4 6 Tuesday September 01 2009 称爹 4 0 POWER G2883 1 6 X 42 090901 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称爹 T P V Top Vi...

Page 52: ...C421 47pF VCC3 3 C403 0 1uF 16V R402 NC R409 100R 1 16W 5 PB8 DSUB_B 1 R419 1K1 16W R412 10K 1 16W 5 RX0N 1 C435 0 1uF 16V C433 0 1uF 16V DSUB_SOG 1 DVI_5V PB6 PA4 R444 3 9K OHM 1 1 16W PA7 LVDS RX2P 1 R411 10K 1 16W 5 MVCC FB404 300OHM C418 0 1uF 16V U403 NC 1 2 3 4 5 6 7 8 NC E1 E2 VSS SDA SCL WC VCC VCC3 3 PB0 Mute 4 Volume 4 R430 NC CN402 CONN 1 2 3 4 5 6 CMVCC adj_BACKLIGHT 4 EE_WP C404 0 1uF...

Page 53: ...2W 5 HS1 HEAT SINK Q901 1 2 F902 FUSE U901 LD7576 1 2 3 4 5 6 7 8 CT COMP CS GNDOUT VCC NC HV C907 82uF 450V R919 150R 1 8W 5 C911 1500PF2KV D902 SB5150 1 2 R905 470R 1 10W 5 5V R918 10K 1 10W 1 F901 FUSE R929 100 OHM 1 4W D908 NC IN4148 R932 NC ACER 22 LCD R923 220 OHM 1 4W C902 1000pF FB901 BEAD 1 2 NR901 NTCR C914 470pF PWPC9821AQMY 1 Custom 2 3 Saturday August 15 2009 715G2892 2 3 ODM MODEL 01...

Page 54: ... 047uF CN802 CONN 1 2 R802 412 OHM 1 10W OV2 C803 5pF6KV D803 BAW56 3 2 1 R803 2K 1 10W 5 U801 AM9000ES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 OV2 LI1 LI2 COMP FT FSET EN DBRT VIN BT TG SW VCC BG GND OV1 R805 10K 1 10W 5 REF C805 1uF 16V DIM C809 0 001uF RJ802 0R05 1 4W 5 PWPC9821AQMY 1 Custom 3 3 Saturday August 15 2009 715G2892 2 3 ODM MODEL 02 INVERTER G2892 2 3 X 21 090817 OEM MODEL Size Rev D...

Page 55: ...090629 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME 称爹 T P V Top Victory Electronics Co Ltd Key Component 絬隔瓜絪腹 0 65V POWER ZD008 NC UDZSNP5 6B 1 2 GND 1 1V C002 NC LED_RED SW004 SW 1 2 4 3 5 ZD004 NC UDZSNP5 6B C007 NC 2K ZD003 NC UDZSNP5 6B LED C001 NC 0 V LED_GRN C004 0 1uF 50V ZD001 NC UDZSNP5 6B ECOLOR MENU DC_POWERON VOL SW005 SW 1 2 4 3 5 AUTO LBADC2 ECOLOR VOL 2K AUTO C006 NC C0...

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