Acer A221HQV Acer A221HQV LCD Monitor Service Guide

Acer A221HQV Manual

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  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 1
    ACER_LCD_A211H/A221HQ_SM20100512V1 Model ID: RG215AC-CAU-AN02
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 2
    03. Exploded Diagram 12 04. Assembly and Disassembly Procedures 14 05. Troubleshooting 21 06. Firmware Upgrade Procedure 58 07. Writing EDID Procedure 60 08. Block Diagram 62 Appendix I : User's Manual Appendix II : User's QSG Appendix III : Spare Parts List Appendix IV: Software Pack Safety
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 3
    ACER service providers recommended by vender should being aware of notices listed in this service manual in order to minimize the risk of personal injury when perform service well as appropriate product training per new model before performing the service procedures. NOTICE: ! To avoid electrical
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 4
    .5" wide flat panel monitor. The display elements shall be a 21.5" inch diagonal, UXGA (1920 x1080) resolution TFT-LCD display .Video input signals include D-sub and digital DVI-D , HDMI and DP(DisplayPort) depends on different model. Power saving function complies with the VESA DPMS (Display Power
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 5
    ACER VESA DDC2Bi 9 + 5V function 10 DDC-GND Signal ground 11 GND Ground SDA signal input for the VESA 12 DDC-SDL DDCB2i function 13 H-SYNC Horizontal signal input from host system 14 V-SYNC Vertical signal Negative Sampling clock input(Even clock) 21 RXECLK+ Positive Sampling clock input(Even
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 6
    monitor sync input to the driver is 1.6 mA. When logic 1 is asserted, the maximum current source from the driver to any single monitor sync input is 400 uA. 1.3.2.6 Abnormal Signal Immunity: The monitor to set the HPos, VPos, Clock and Focus. Press the Empowering Key to open the Acer Empowering
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 7
    Menu blue, and to alert the user that input signal is not active. Then the monitor shall go into sleep mode and the LED shall be Amber. This function gives warning message about input resolution or refresh rate that the monitor cannot support. When an input signal which is out of the normal
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 8
    by VESA E-EDID Standard. Once the EDID is programmed the write protection function will enabled. So the EEPROM data cannot be overwritten. 1.4 Flat Panel: 1.4.1 General Requirements: The panel shall be a Full HD resolution 21.5" diagonal TFT-LCD. 1.4.2 Panel Timings: The controller in the monitor
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 9
    (continued) ACER A211H/A221HQ 7 Go to contents page 1.4.5 Defects: 1.4.5.1 Visual Inspection: The LCD panel shall be inspected with all pixels set to white, black, red, green and blue. The color variation, brightness variation, and overall appearance must meet the SPEC. 1.4.5.2 Display
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 10
    time vs gray scale.Test condition: brightness set to max, and contrast set to default. 1.5.4 Viewing angles: The viewing angles are measured at CR >=10 as below : Brightness uniformity >= 75% Remark: The black luminance non-uniformity are no defined by panel spec, therefore, we don't define the
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 11
    setting for 100%. The values specified are at an approximate distance 20 cm from the LCD surface and at 0 viewing angle. The full screen white center luminance at User Stacking Height 5 layers, 2103 mm 1.7.2 Stand: Mounting Method 100 x 100 mm VESA Mount Attachment Method (4) Screws ,M4 x
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 12
    Acer eColor Ma nagement 2.3 Main OSD Menu: 2.3.1. OSD layout: 1). Display OSD menu when user press "C" button in Function Menu. 2). Layout as following figure. Acer Key Functio n Description Power Power o n/off the monitor A Increa se th e setting va lue for targe t item B Descrease the se
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 13
    center. Acer logo 2.7 OSD Message: Item Auto Config Please Wait Input Not Support Cable Not Connected No Signal Please Wait Description When user press hot key "Auto" will show this message, and the monitor do the Auto config function. When the Hsync Frequency, Vsync Frequency or Resolution is
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 14
    12 ACER A211H/A221HQ Go to contents page 3.1 Product Exploded Diagram: 3. Exploded Diagram
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 15
    3.2 Packing Exploded Diagram: 3. Exploded Diagram (continued) ACER A211H/A221HQ 13 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 16
    14 ACER A211H/A221HQ Go to contents page 4. Assembly and Disassembly Procedures 4.1 Assembly procedures: Connect P802 of power board with P301 of S1 interface board. Connect P003
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 17
    4. Assembly and Disassembly Procedures (continued) ACER A211H/A221HQ 15 Go to contents page Plug lamp is firmly attached to the front bezel. Put the bracket chassis module on the back of S9 LCD panel module. S13 Take a function key board, then connect the function key cable with the function
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 18
    S20 and power cord from the monitor. Stick a screen protector on the front bezel with adhesive tapes. 4 5 6 S17 Take a arm, then install the arm to the hinge cover following the direction as the picture below. Take a EPE bag to cover the LCD monitor, put the S21 monitor face down on the table.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 19
    bags. Take two cushion foams to hold the LCD monitor, put the base and arm on the specific positions as the below picture. Fix the base with adhesive tapes. base arm S25 Move the whole unit into a carton and put accessories including user's manual, D-Sub cable, audio cable, DVI cable, power cable
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 20
    CABLE D-SUB CABLE USER'S MANUAL Take out the whole cushion foams from the carton S3 and remove base and arm. 1 3 2 Use a Phillips-head screwdriver to remove three S6 screws for releasing hinge. (No.4~6 screw size=M4x9, Torque=11~13kgfxcm) 5 6 4 Turn over the LCD monitor to let the screen
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 21
    4. Assembly and Disassembly Procedures (continued) ACER A211H/A221HQ 19 Go to contents page Turn over the LCD monitor to let the screen faced S8 down and then remove the rear cover. Unplug lamp cables follow the direction as the S11 below picture. S12
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 22
    20 ACER A211H/A221HQ Go to contents page 4. Assembly and Disassembly Procedures (continued) S14 Use a Hex-head screwdriver to remove 4 screws for unlocking mechanisms of the DVI
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 23
    5. Troubleshooting 5.1 Troubleshooting for Acer A211H/A221HQ(1A1D1H): 5.1.1 No display on the screen (Screen is black and colour of LED is amber): ACER A211H/A221HQ 21 Go to contents page Does OSM display when you push "MENU key. When a signal isn't being inputted, it is indicated with "No
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 24
    22 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.2 Nothing displays on the screen (Screen is black and colour of LED is blue): Is backlight lit? OK NG Refer "Checking the backlight unit" section" Does computer output RGB video signals? Check the video cable for
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 25
    5. Troubleshooting (continued) ACER A211H/A221HQ 23 Go to contents page 5.1.2 Nothing displays on the OK NG Failure Point 1) The LVDS cable broke between P307 and LCD module. 2) LCD module is failure. Failure Point 1) Printed wire broke between P307 and I308 LVDS signals. 2) I308 is failure.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 26
    24 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.3 Checking the back light unit: Is +22V supplied to inverter PWB? (by the power board) OK NG Failure Point Power board of Inverter part failure. Check the BKLT_EN signal of the DC input P301 pin 2 at TTL high level.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 27
    5. Troubleshooting (continued) ACER A211H/A221HQ 25 Go to contents page 5.1.4 Abnormal screen( for VGA): Check the R, G, B video signal from computer input on P302 of D-sub connector. OK NG Failure Point 1) No R, G, B video signals output from host computer, check computer. 2) Video signal
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 28
    26 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.4 Abnormal screen (For DVI and the same for HDMI): Check the DVI video signal from computer input on P303 of DVI connector. OK NG Check the DVI input video signals on I308 pin 12,13,14,15,16,17,18,19 respectively
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 29
    5. Troubleshooting (continued) 5.1.5 Abnormal OSD display adjust problem: ACER A211H/A221HQ 27 Go to contents page Check the input TTL level whether is changed when pressed function keys on the P310 pin 5, 6 (normal is
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 30
    ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.6 Abnormal plug and play operation( for VGA): Confirm the host computer the signal on P302 pin12, 15 that is serial data / clock signal. OK NG Failure Point The Video cable is failure. Check the output signal of serial
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 31
    5. Troubleshooting (continued) ACER A211H/A221HQ 29 Go to contents page 5.1.6 Abnormal plug and play is 4.5V. OK NG Check the voltage on P303 pin 7, 6 that is serial data / clock signal. Failure Point Printed wire broke between P303 pin 14 and pin 16. OK NG Failure Point The Video cable
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 32
    30 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.7 Checking the interface circuit of sync signal: 5.1.7.1 Checking the control circuit of horizontal sync pluse: Check the horizontal sync signal on P302 pin13 TTL level. OK NG Failure Point Video cable is failure.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 33
    5. Troubleshooting (continued) 5.1.8 Checking the resolution change IC movement: Check +3.3V supply on I304 pin2. ACER A211H/A221HQ 31 Go to OK NG Check I308 pin 125 RSTB signal is high level at normal operation. OK NG Check I308 pin 115,116,117 SPI signal. OK NG Failure Point I308 failure
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 34
    32 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.9 Checking the DC/DC converter circuit: Check the 5V is output from P301 pin 4,5,6. OK NG Failure Point 1) Power wire disconnection. 2) Power board is
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 35
    of the frequency that it can't be distinguished. Check if the sync signal from computer is output and if the video cable is connected normally. (VGA or DVI) Input the sync signal of computer, or NG change the cable. (VGA or DVI) OK Proceed "checking the resolution change IC movement" section.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 36
    5. Troubleshooting (continued) 5.2.2 Nothing displays on the screen (Screen is black and colour of LED is blue): Is backlight light up? OK NG Refer "Checking the backlight unit" section" Check the video cable for failure. Check the host for output signal with all black only. Does computer
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 37
    5. Troubleshooting (continued) ACER A211H/A221HQ 35 Go to contents page 5.2.2 Nothing displays on the screen (Screen is black and colour of LED is blue)continued: Continue Check the 3.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 38
    ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.2.2 Nothing displays on the screen (Screen is black and colour of LED is blue)continued: Continue Check the 5V power are supplied on CN306 pin 1, 2, 3, (to NG the LCD between CN306 and I310 LVDS signals. 2) I310 is failure.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 39
    5. Troubleshooting (continued) 5.2.3 Checking the back light unit: ACER A211H/A221HQ 37 Go to contents +22V is broken. 2) Power board failure. OK Check the BACKLIGHT_ADJ signal of the CN301 pin 13 from I310 pin 114 is a PWM signal. Failure Point 1) Printed wire broke between CN301 NG pin 13,
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 40
    38 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.2.4 Abnormal screen 5.2.4.1 Abnormal screen for VGA source Check the R, G, B video signal from computer input on CN302 of video connector. Failure Point NG 1) No R, G, B video signals output from host computer, check
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 41
    5. Troubleshooting (continued) 5.2.4.2 Abnormal screen for DVI source ACER A211H/A221HQ 39 Go to contents page Check the TMDS signals from computer input on CN303 of video connector. Failure Point NG 1) No TMDS signals output from host computer, check computer. 2) DVI-D video signal cable
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 42
    40 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.2.5 Abnormal OSD display adjust problem: Check the input level whether was changed when pressed function keys on the CN304 pin 1, 2. (Normal is 3.3V, when push button, genertaed different voltage. Pin 1, 2
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 43
    5. Troubleshooting (continued) 5.2.6 Abnormal plug and play operation 5.2.6.1 Abnormal plug and play operation for VGA ACER A211H/A221HQ 41 Go to contents page Confirm the host computer supplies DDC/CI mode. Failure Point NG The host machine is not communicated in DDC/ CI mode. OK Check the
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 44
    ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.6.2 Abnormal plug and play operation for DVI Confirm the host computer signals if is high level on CN303 pin 7, 6, that is I2C data / clk signal. Failure Point NG The DVI video cable is failure. OK Check the output signal
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 45
    Checking the control circuit of vertical sync pluse: Check the vertical sync signal on CN302 pin 14 TTL level. OK Check the vertical sync signal on I310 pin 21 TTL level. OK Failure Point Process "Checking the resolution change IC movement" section. Failure Point NG VGA Video cable is failure
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 46
    44 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.2.8 Checking the resolution change IC movement: Check +3.3V supply Check I310 pin 125 RESET signal is high level at normal operation. OK Check I310 pin 115~118 SPI Flash ROM interface signal. OK Failure Point I310 failure
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 47
    5. Troubleshooting (continued) ACER A211H/A221HQ 45 Go to contents page 5.2.9 Checking the DC/DC converter circuit: Check the 5V is output from CN301 pin 9,10,11 OK NG
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 48
    at OK the time of the frequency that it can't be distinguished. Check if the sync signal from computer is output and if the video cable is connected normally. (VGA) Input the sync signal of computer, or NG change the cable. (VGA) OK Proceed "checking the resolution change IC movement" section.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 49
    of LED is blue): ACER A211H/A221HQ 47 Go to contents page Is backlight light up? NG Refer "Checking the backlight unit" section" OK Check the video cable for failure. Check the host for output signal with all black only. Does computer output RGB video signals? (VGA) 1) Change pattern of
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 50
    48 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.3.2 Nothing displays on the screen (Screen is black and colour of LED is blue)continued: Continue Check the 5V power are supplied on CN304 pin 1, 2, 3, 4, 5 NG (to the LCD panel module) Check if the Voltage on I302
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 51
    backlight unit: 5. Troubleshooting (continued) ACER A211H/A221HQ 49 Go to contents page Is +22V supplied to inverter PWB? (by the power board) Failure Point NG 1) The wire between Power +22V and Inverter +22V is broken. 2) Power board failure. OK Check the BACKLIGHT_ADJ signal of the CN301
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 52
    ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.3.4 Abnormal screen for VGA source: Check the R, G, B video signal from computer input on CN302 of video connector. Failure Point NG 1) No R, G, B video signals output from host computer, check computer. 2) VGA video signal
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 53
    5. Troubleshooting (continued) 5.3.5 Abnormal OSD display adjust problem: ACER A211H/A221HQ 51 Go to contents page Check the input level whether was changed when pressed function keys on the CN305 pin 1, 2. (Normal is 3.3V,
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 54
    52 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.3.6 Abnormal plug and play operation for VGA: Confirm the host computer supplies DDC/CI mode. Failure Point NG The host machine is not communicated in DDC/ CI mode. OK Check the voltage on CN302 pin 9, that
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 55
    5. Troubleshooting (continued) 5.3.7 Checking the interface circuit of sync signal: 5.3.7.1 Checking the control circuit of horizontal sync pluse: ACER A211H/A221HQ 53 Go to contents page Check the horizontal sync signal on CN302 pin 13 TTL level. OK Check the horizontal sync signal on I306 pin
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 56
    54 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.3.8 Checking the resolution change IC movement: Check 2 OK Check I306 pin 54 RESET signal is low level at normal operation. OK Check I306 pin 21~24 SPI Flash ROM interface signal. OK Failure Point I306 failure. Failure
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 57
    5. Troubleshooting (continued) 5.3.9 Checking the DC/DC converter circuit: ACER A211H/A221HQ 55 Go to contents page Check the 5V is output from CN301 pin 9,10,11 OK NG Check the 5V is input to
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 58
    ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.4 Power board troubleshooting(1A1D1H/1A1D/1A): 5.4.1 No Power (1A1D1H/1A1D/1A): Check output voltage +5V, +22V are right or not NG OK Check power switch is turn on or not OK NG Check power cord (P802), signal problem Turn
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 59
    5. Troubleshooting (continued) ACER A211H/A221HQ 57 Go to contents page 5.4.2 For Inverter Q105) work right OK NG Check transformer (T101) to work it and repair it It is not inverter problem Check R105, C102 and repair them. Check printed wire Check CCFL and repair them. Lock P103, P104
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 60
    58 ACER A211H/ version. 6.1 Hardware Configuration: MONITOR PC/HOST If it shows "No USB Device", there is a problems with communication. You should on which model you want to update: "1A1D1H" is used in the monitor which have VGA, DVI and HDMI ports; "1A1D" is used in the monitor which have VGA
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 61
    ACER A211H/A221HQ 59 Go to contents page S4. Select the right F/W code for the mode you want to update. Herein we take the model S1. Turn off the monitor, press "Power" and "e" button at the same time for turning on the monitor. S2. Press "Menu" window, it means ISP upgrading process is completed.
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 62
    ACER A211H/A221HQ Go to contents page 7. Writing EDID Process Notice Notes: Please be noted that 'INI.INI' file must be copied into 'C:\WINDOWS' (Note: It depends on which model you want to write. 1A is used in the monitor only have VGA port, 1A1D is used in the monitor both have VGA and DVI ports
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 63
    And Test DDC". ACER A211H/A221HQ 61 Go to contents page S4. Key in PPID number(22 characters) which you can find printed on the model lable in the VGA/DVI. 7.3 Writing HDMI Process: S1. Connect a HDMI cable between monitor and DDC FIXTURE through HDMI transfer DVI connector. Open the folder: "
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 64
    JUMP WIRE J015 JUMP WIRE J017 JUMP WIRE J018 JUMP WIRE J019 JUMP WIRE J021 JUMP WIRE 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9382-SF A B C D E F G ACER A211H/A221HQ 62 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 65
    -GP P601 E AUTO MENU LEFT < RIGHT > S602 S603 S604 S605 S606 S601 POWER LED D602 13 D601 LED A B C D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L0202-1 ACER A211H/A221HQ 63 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 66
    4 5 6 7 8 9 10 11 12 13 BLOCK Diagram A A LCD Panel Module TQ2 Controller Board B B P307 USB Upstream AUDIO PORT AUDIO PORT (Reserved) HDMI Input Digital Video Input Analog Video Input G G 1 2 3 4 5 6 7 8 9 10 11 12 13 ACER A211H/A221HQ 64 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 67
    11 12 13 +5V R477 NC/4K7_5% R0402 P5V I304 TO263 P3P3V A P301 for USB model add R478 R478 NC/0K_5% USB_EN P5V P5V 3 VIN 2 VOUT P3P3V A 1 VSS STANDBY 3 2 1 D E F G on_Panel 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 ACER A211H/A221HQ 65 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 68
    A0 A1 A2 GND 1 2 3 4 M24C02_WMN6T SOIC-8P R408 10K_5% R0402 R317 100_1% R0402 DDC_WP DDC_SCL_VGA DDC_SDA_VGA DDC_SCL_VGA DDC_SDA_VGA E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 ACER A211H/A221HQ 66 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 69
    GND DVI_CONn B 16 HP 17 RX0- 18 RX0+ 19 GND RX5RX5+ 20 21 22 GND 23 RXC+ RXC- 24 DVI_RX0DVI_RX0+ DVI_RXC+ DVI_RXC- DVI_RX0DVI_RX0+ R355 R350 R467 NC/10K_5% R0402 C D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 ACER A211H/A221HQ 67 Go to contents page
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    B NC 15 HDMI_SCL DDC CLK 16 HDMI_SDA DDC DATA 17 HDMI_5V GND 18 +5V HDMI_5V 19 HP DET 21 SHELL2 C389 R359 D343 1 6 DDC5V_HDMI D354 I/O 1 2 GND 3 I/O 4 5 VCC 4 A CM0402 CM0402 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 ACER A211H/A221HQ 68 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 71
    LANE1P/RX1P_1 16 LANE1N/RX1N_1 17 LANE2P/RX0P_1 18 LANE2N/RX0N_1 19 LANE3P/RXCP_1 20 LANE3N/RXCN_1 21 DP_VDD/TMDS_VDD2 22 AVS0 23 AHS0 24 ADC_VDD 25 B026 B0+ 27 G028 G0+ 29 SOG0 XI 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 A B C D E F G ACER A211H/A221HQ 69 Go to contents page
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    25 24 LVB3P LVB3P LVBCKM 23 LVBCKP 22 LVA0M LVA0P LVA1M LVA0M LVA0P LVA1M LVB3M 21 LVB3P 20 LVA0M 19 LVA1P LVA1P LVA0P 18 17 B LVA2M LVA2M LVA2P LVA2P P310 KEY1_SDA 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 ACER A211H/A221HQ 70 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 73
    : 1 2 3 4 5 6 7 8 9 10 11 12 13 LCD Panel A A CN306 B B Power & Inverter Board Audio CN301 +5V Vcc F CN303 DVI-D D-SUB CN302 Function Key BD G DVI Analog G Video Video Input Input 1 2 3 4 5 6 7 8 9 10 11 12 13 ACER A211H/A221HQ 71 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 74
    E 1 2 P5V 3 1 R308 4K7R2J-2-GP 5 PANELVCC_EN R309 1 21 4K7R2J-2-GP Q301 MMBT3904-7-F-GP 2 1 R390 2 F AUDIO_EN_CTRL 1 R310 2 GP VOLUME 5 G 7 6 1 C315 SCD1U16V2ZY-2GP 2 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9137-1M ACER A211H/A221HQ 72 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 75
    L1-GP-U 75R2F-2-GP (NC)SC5P50V2CN-2GP R321 B 2 VGA_GRN- 2 1 21 2 C322 SCD047U16V2KX-1-GP GNDG 5 L305 100RR23F2-L31-GP-U VGA_BLUE R3122 0R23J-L-GP A DDC_SDA_VGA 5 DDC_WPn 4,5 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9137-1M ACER A211H/A221HQ 73 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 76
    GP P5V 2,3,5,6 P5V D311 1 3 DDC5V_DVI B C RXCRXC+ GND RX5+ RX5GND RX0+ RX0- 24 23 22 21 20 19 18 17 HP GND 5V RX3+ RX3GND RX1+ RX1- 16 15 14 13 12 11 10 9 -2-GP DVI_CABLE_DET 5 F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9137-1M ACER A211H/A221HQ 74 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 77
    DRX2P DRXCP 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 31 32 33 34 35 36 37 38 TMDS_VDD TMDS_REXT RESERVED#3 RESERVED#4 DVI_CABLE_DET A B C D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9137-1M ACER A211H/A221HQ 75 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 78
    LVB3M LVB3P LVA0M LVA0P LVA1M LVA1P LVA2M LVA2P LVACKM LVACKP LVA3M LVA3P VLCD CN308 32 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 31 JCE-CON30-1-GP (NC)SCD1U16V3ZY-GP 1 C375 2 G 10 11 12 13 PCB No. L9137-1M ACER A211H/A221HQ 76 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 79
    : 1 2 3 4 5 6 7 8 9 10 11 12 13 LCD Panel A A CN304 B B Power & Inverter Board Audio CN301 +5V E M24C02 E DDC_SCL DDC_SDA F F D-SUB CN302 Function Key BD G Analog G Video Input 1 2 3 4 5 6 7 8 9 10 11 12 13 ACER A211H/A221HQ 77 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 80
    -2-GP 1 R310 2 100R2J-2-GP AUDIO_EN 4 4 PANELVCC_EN 1 R338 1 21 4K7R2J-2-GP 2 Q303 MMBT3904-7-F-GP F 100KR2J-1-GP F P5V 2 GEN246R158-8-F-A G 1 G C312 SC1U16V3KX-5GP 7 6 2 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9142-1M ACER A211H/A221HQ 78 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 81
    )SC5P50V2CN-2GP 2 VGA_RED- 2 R316 1 100R2F-4-GP 21 2 C318 SCD047U16V2KX-1-GP GNDR 4 R317 1 (NC)470R2J-2-GP 21 2 C319 (NC)SCD047U16V2KX-1-GP SOG 4 L305 1 DDC_SDA_VGA 4 DDC_WPn 4 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9142-1M ACER A211H/A221HQ 79 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 82
    /ADC2 P6_3/ADC3 RTD2280L HSYNC VSYNC XIN XOUT SPI_SDI/SCLK SPI_SDO/SCSB 24 21 SPI_CE SPI_SCL/SDIO 22 23 SDIN SDOUT CE CLK RST DGND DGND STANDBY_ATTN M24C16-WMN6-1GP 1 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9142-1M A B C D E F G ACER A211H/A221HQ 80 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 83
    GP 24 24 LVBCKM 23 LVBCKM 23 LVBCKP 22 LVBCKP 22 E LVB3M 21 LVB3P 20 LVB3M 21 LVB3P 20 LVA0M 19 LVA0M 19 LVA0P 18 LVA0P 18 17 LVA1M 16 7 GREEN VCC CN307 E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9142-1M ACER A211H/A221HQ 81 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 84
    8.4 ACER_LCD_A211H/A221HQ_LAYOUTS_POWER BOARD(1A1D1H/1A1D/1A/1A1D1H+OD): 1 2 3 4 5 6 7 TOP SICK A B 8 9 10 11 12 13 BOTTOM SICK A B C D E F G 1 2 3 4 5 6 7 C D E F G 8 9 10 11 12 13 PCB No. L9382-SF ACER A211H/A221HQ 82 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 85
    8.5 ACER_LCD_A211H/A221HQ LAYOUTS_FUNCTION KEY BOARD(1A1D1H/1A1D/1A): 1 2 3 4 5 TOP SICK A 6 7 B 8 9 10 11 12 13 BOTTOM SICK A B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L0202-1 ACER A211H/A221HQ 83 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 86
    BOARD: 8.6.1 ACER_LCD_A211H/A221HQ_LAYOUTS_INTERFACE BOARD_1A1D1H: 1 2 3 4 5 TOP SICK A 6 7 B 8 9 10 11 12 13 BOTTOM SICK A B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. L9141-1 ACER A211H/A221HQ 84 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 87
    8.6.2 ACER_LCD_A211H/A221HQ_LAYOUTS_INTERFACE BOARD_1A1D: 1 2 3 4 5 TOP SICK A 6 7 B 8 9 10 11 12 13 BOTTOM SICK A B C D E F G 1 2 3 4 5 6 7 C D E F G 8 9 10 11 12 13 PCB No. L9137-1M ACER A211H/A221HQ 85 Go to contents page
  • Acer A221HQV | Acer A221HQV LCD Monitor Service Guide - Page 88
    8.6.3 ACER_LCD_A211H/A221HQ_LAYOUTS_INTERFACE BOARD_1A: 1 2 3 4 5 TOP SICK A 6 7 B 8 9 10 11 12 13 BOTTOM SICK A B C D E F G 1 2 3 4 5 6 7 C D E F G 8 9 10 11 12 13 PCB No. L9142-1M ACER A211H/A221HQ 86 Go to contents page

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