Acer S191HQL Service Manual Download Page 16 | Manualshive

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1.5.2 Contrast ratio (CR):

1.5.2.1 General CR:

The values specified are at an approximate distance 50cm from the LCD surface at a viewing angle of



and



equal to 0

°

.

Contrast ratio(CR) is defined mathematically as :It is measured at center point(1)

                                                Surface luminance with all white pixels
   Contrast ratio =   ---------------------------------------------------------
                                                Surface luminance with all black pixels

1.5.3 Response time:

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Summary of Contents for S191HQL

Page 1: ...ACER_LCD_S191HQL _SM20120602V0...

Page 2: ...5 Troubleshooting 30 6 Firmware Upgrade Process 34 7 Writing EDID Process 40 8 FRU Field Replaceable Unit List 46 9 Schematics and Layouts 49 Safety Notice Any person attempting to service this chass...

Page 3: ...thod may damage equipment or products It is recommended that service engineers should have repairing knowledge experience as well as appropriate product training per new model before performing the se...

Page 4: ...ertical stripes Gray scale or the brightness of the sub pixel color is determined with a 8 bit gray scale signal for each dot thus presenting a palette of more than 16 7M colors with Advanced FRC Fram...

Page 5: ...Time TrR 1 1 2 6 ms 4 RD80S Decay Time TrD 3 9 7 4 ms Color Coordinates CIE1931 RED Rx Typ 0 03 0 627 Typ 0 03 PR 650 Ry 0 347 GREEN Gx 0 339 Gy 0 621 BLUE Bx 0 154 By 0 050 WHITE Wx 0 313 Wy 0 329 Vi...

Page 6: ...06 5MHZ all white e color mode Set to User mode 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...

Page 7: ...linear distributed 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...

Page 8: ...20 g Typ Response time 5ms Typ 10ms max Luminance of White 200 cd m2 Center 1Point typ Input Separate Sync H V TTL H Frequency 30kHz 60kHz V Frequency 40 75Hz Viewing angle CR 10 R L 90 Typ U D 50 Typ...

Page 9: ...nt from regions The adapter output cable length of 1500 36mm voltage is 19v and current is 1 58A 1 3 1 2 Analog Connector and Cable The analog signal cable shall be Gray or black and 1 8m 10cm 0cm A D...

Page 10: ...5 GND 30 ICLK_RESET 6 GND 31 ICLK1 7 GND 32 ICLK2 8 GND 33 ICLK3 9 GND 34 ICLK4 10 GND 35 IVDD O 11 GND 36 IVDD E 12 LVCLK 37 FLK2 13 LVCLK 38 FLK1 14 GND 39 GND 15 LV2 40 SDA 16 LV2 41 SCL 17 GND 42...

Page 11: ...ontal line HS may be either active high or active low according to the timing The Vertical Sync VS TTL signal is used to initiate the display of a new frame VS may be either active high or active low...

Page 12: ...igger the acer eColor Management 4 Auto Adjust button Exit 1 When OSD menu is in active status this button will act as EXIT KEY EXIT OSD menu 2 When OSD menu is in off status press this button for 2 s...

Page 13: ...8 Language selected English DutSch French Spanish Italian Japanese Chinese Chinese Simplify Signal Input Select and DDC CI Control Analog DDC CI Display Information Factory Reset Exit D OSD Control F...

Page 14: ...0 67Hz SVGA 832x624 75Hz MAC 1152x870 75Hz 1 4 Flat Panel 1 4 1 General Requirements The panel shall be a FULL HD resolution 18 5 diagonal TFT LCD 1 4 2 Polarizer Hardness The front polarizer should h...

Page 15: ...rizer does not damage the glass Rubbing Line Horizontal or diagonal lines that appear gray with the display patterns dark and may have resulted from an out of control rubbing process on the polyimide...

Page 16: ...pproximate distance 50cm from the LCD surface at a viewing angle of and equal to 0 Contrast ratio CR is defined mathematically as It is measured at center point 1 Surface luminance with all white pixe...

Page 17: ...FIG 9 The response time is defined as the following figure and shall be measured by switching the input signal for each gray to gray 1 5 4 Viewing angles Viewing angle is the angle at which the contr...

Page 18: ...0 020 Bluish Preset 9300K x 0 283 0 020 y 0 297 0 020 1 6 Environmental Requirements Operating Storage Temperature 0 C 40 C 20 C 60 C Humidity 15 90 15 90 Altitude 12 000 feet 3 658m 40 000 feet 12 19...

Page 19: ...Clock and Focus 3 When exit eColor OSD it will activate the Auto Adjustment function automatically 5 Press or to select the desired function Press or to change the settings of the current function Or...

Page 20: ...18 c OSD layout for each function page Picture OSD d Item page status Status Display type Non Focus Item focused Item selected...

Page 21: ...19 2 3 2 Key operation Key define...

Page 22: ...2 4 Acer eColor management a Display Acer eColor Management OSD when user press e button at Function menu or trigger this function in OSD menu picture page b Layout as following figure 2 5 OSD Messag...

Page 23: ...21...

Page 24: ...22 3 Exploded Diagram 3 1 Product Exploded Diagram...

Page 25: ...cription LNT Part No Acer Part No 1 BEZEL ASSY 705GFACS302 2 KEY BOARD KEPCBQK1 3 PANEL LM185WH2 T2BB 750GMT185W2BB1N400 4 SCREW 0D1G1030 6120 5 MAIN BOARD CBPCAAVAGQN 6 Main frame F15G1002201 7 SCREW...

Page 26: ...S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CARTON EPS 1 EPS 2 EPE BAG FOR MONITROT HEAR OF MONITOR PE BAG FOR BASE BASE PE BAG FOR STAND STAND POWER CABLE SIGNAL CABLE QSG WARRANTY CARD ENERGY STAR CARD C...

Page 27: ...lar Assemble every part as the below picture Turn over the main board and Lock the two screws Turn over the main board and lock the two screws Assemble the mylar on the back of main board Prepare a be...

Page 28: ...d MYLAR set position as shown in figure 1 The main board the alignment as shown in figure 3 The body aluminum film pumping away mylar Connect the all cable and the paste all tapes as the below picture...

Page 29: ...w and assemble the base 4 2 Disassembly procedures Put the monitor on a protective cushion Unscrew the screw as the below picture to remove the base Unscrew the screw then pull out the stand cover fol...

Page 30: ...ezel and rear cover Tear out all tapes on panel Disconnect two FFC cables and Key board cable as the below picture Separate the main board and I O Bracket Turn over the main board and take out the myl...

Page 31: ...29 unscrew the two screws Turn over the main board and unscrew the two screws Separate the key board and the bezel 1 2 S8...

Page 32: ...s Check the LED indicate is OK Check the AC power Replace the power board and check connections OK NG OK NG NG Turn on the Power On Off switch Replace key board and check connections NG OK NG No power...

Page 33: ...deo Power LED Blue Press the power button is OK Check the LVDS FFC cable or panel Re plug the cable NG OK OK Replace the main board Replace the LVDS FFC cable or panel NG Replace the key board NG Chec...

Page 34: ...y mode Set to the optimal frequency select the recommended frequency Pull out signal cable and check Self Test Feature Check is ok Check the signal cable and the PC Readjust the phase and pixel clock...

Page 35: ...shift Replace the signal cable Pull out the signal cable and check the screen color display is normal The end Replace the signal cable or PC Reset the factory mode In the user mode set the color sett...

Page 36: ...SP Boar PC Monitor ISP tool New F W ISP ronment Pre e and Softwa ble ble rd 715GT03 V4 5 0 8 0 W USB cable P Board 715 Monito 6 eparation are Require 4 B 5GT034 B or 6 Firmwa ed re Upgrad de Process V...

Page 37: ...35 New F W 6 2 Connection 6 3 ISP Programming Procedures S1 These three files must be put in one folder as the below picture...

Page 38: ...meters in Config window Open the configration window Speed less than 39 Port Type USB S4 Set the parameters in Device window Check WP Pin pull to high during ISP S5 Click the Connect the tool will com...

Page 39: ...the restore address to save HDCP for DVI or HDMI Deferent monitor has deferent address and space for HDCP If monitor has not DVI or HDMI don t tick Restore Enable S9 Set parameter in Auto window Proce...

Page 40: ...turn it on S2 Pressing e and power on when the screen lights release the key and press MENU again to open the menu with F and select F to open factory menu S3 Restart the monitor And then open the use...

Page 41: ...t ok AC off the monitor for a while and retry it Click the Dis Con and click Connect again as below right picture S2 If appear Blank Error Change ISP board or cable Make sure the connection is ok Chan...

Page 42: ...nt Preparation Hardware and Software Required LPT cable male to male VGA cable 12V DC adapter ISP Board 715GT034 B PC Monitor LPT port driver ISP tool TPVDDC20100901 exe EDID LPT cable male to male VG...

Page 43: ...41 LPT port d P driver EDID PC D ISP tool TP Monitor PVDDC2010 00901 exe...

Page 44: ...rt PC after installation S2 Prepare the EDID written Change the EDID files name as below rule Anolog EDID Wa dat Digital EDID Wd dat S3 Copy WA dat to one folder named as ACER S191HQL which must conta...

Page 45: ...the icon to open the tool S6 Check the Analog and click Loadfile to set the parameters Click Analog Manufacturer ACR Product Code 02C8 Model Name Acer S191HQL S7 Select the EDID folder as the below p...

Page 46: ...ful S9 Check the Only connect VGA and Write SN and type in the 22 digit S N which must be the same as S N in the monitor s barcode S10 Click Program to start writing When the green PASS appear the pro...

Page 47: ...S1 If can t write You could try to restart the monitor AC on the monitor and turn on it S2 If can t write Take apart the monitor and connect the 7pin of EEPROM to GND to diable write protection then w...

Page 48: ...he 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 lo...

Page 49: ...47 Rear Cover A34G2788AEMA1B0100 Panel 750GMT185W2BB1N400 Bezel A34G2789AEMA3B0130 BRACKET A15G1378201...

Page 50: ...48 Main board CBPCAAVAGQN Key board KEPCBQK1 FFC MAIN BOARD TO PANEL F95G179X30N237 FFC MAIN BOARD TO BACKLIGHT F95G176T 10334...

Page 51: ...16W 5 R114 47R 1 16W 5 C108 47nF 16V R124 100R 1 16W 5 R112 10R 1 16W 5 R125 100R 1 16W 5 R123 0R05 1 10W C117 100N 16V C114 22P 50V R115 4K7 1 16W 5 BIN0 C111 47nF 16V C107 47nF 16V R116 4K7 1 16W 5...

Page 52: ...U402 MX25L2026DM1I 12G CS 1 SO 2 WP 3 GND 4 SI 5 SCK 6 HOLD 7 VCC 8 Wednesday April 18 2012 LED_A LED_G OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Co...

Page 53: ...3 VCC 4 LX 5 COMP 6 FB 7 GND 8 LX 9 C724 1N 50V R816 NC R830 1R 1 10W 5 D801 B3100B 1 2 C812 100N 50V R801 10R 1 8W 5 R829 1R 1 10W 5 R807 20K 1 10W 5 R841 2 2OHM 1 10W C814 2N2 50V C802 68NF 50V R810...

Page 54: ...ponent acer A acer B and V key pad A4 2 2 Wednesday March 24 2010 715G4191 K0A 000 0040 02 KEY G4191 K0A X X 1 100320 ZD006 MLVS0402M04 1 2 ZD007 MLVS0402M04 1 2 ZD008 MLVS0402M04 1 2 MENU SW001 SW 1...

Page 55: ...53 9 2 Layouts Main Board 715G5280M0E000004K...

Page 56: ...54...

Page 57: ...55 Key Board 715G4982K01000003M...

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