Acer A221HQV LCD Monitor Service Guide
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... VGA, DVI and HDMI port. DC power Power Board AC to DC Adapter DC to drive the LCD display circuit. The LVDS signals transmit video data to LCD Module to AC Inverter Audio AMP (Option) Interface Board Flat Panel Controller,DDC Audio line input Speaker line... monitor meets Energy Efficiency grade 2 of compatible generators during qualification and production is a calibrated Chroma 2326 or Quantum 801GD video generator. 2 ACER A211H/A221HQ Go to the whole board and LCD panel. Product Specification This model combine with the VESA DPMS (Display Power Management Standard). ...
... VGA, DVI and HDMI port. DC power Power Board AC to DC Adapter DC to drive the LCD display circuit. The LVDS signals transmit video data to LCD Module to AC Inverter Audio AMP (Option) Interface Board Flat Panel Controller,DDC Audio line input Speaker line... monitor meets Energy Efficiency grade 2 of compatible generators during qualification and production is a calibrated Chroma 2326 or Quantum 801GD video generator. 2 ACER A211H/A221HQ Go to the whole board and LCD panel. Product Specification This model combine with the VESA DPMS (Display Power Management Standard). ...
Acer A221HQV LCD Monitor Service Guide
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...and Cable: The AC inlet connector shall be black and with length of 1.8 meter. Connector Pin Assignment: A. DVI-D (Digital TMDS) Connector Pin Si gnal Pin Signal 1 TMDS Data 2- 13 NC 2 TMDS Data 2+ 14 +5V P OWE R 3 TMDS Data GND 15 S elf Test 4 NC 16 Hot Plug Detect ...- Negative LVDS differential data input(Odd data) 11 RXOIN3+ Positive LVDS differential data input(Odd data) 12 RXEIN0- Product Specification (continued) ACER A211H/A221HQ 3 Go to mains power. Negative LVDS differential data input(Even data) 13 RXEIN0+ Positive LVDS differential data input(Even data)...
...and Cable: The AC inlet connector shall be black and with length of 1.8 meter. Connector Pin Assignment: A. DVI-D (Digital TMDS) Connector Pin Si gnal Pin Signal 1 TMDS Data 2- 13 NC 2 TMDS Data 2+ 14 +5V P OWE R 3 TMDS Data GND 15 S elf Test 4 NC 16 Hot Plug Detect ...- Negative LVDS differential data input(Odd data) 11 RXOIN3+ Positive LVDS differential data input(Odd data) 12 RXEIN0- Product Specification (continued) ACER A211H/A221HQ 3 Go to mains power. Negative LVDS differential data input(Even data) 13 RXEIN0+ Positive LVDS differential data input(Even data)...
Acer A221HQV LCD Monitor Service Guide
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4 ACER A211H/A221HQ Go to the timing. HS may be damaged by improper sync timing, pulse duration, absence of sync, abnormal input signal amplitude, or any other anomalous behavior of a graphics card. 1.3.2.7 Digital TMDS Input (DVI and HDMI signal input): These video inputs consist of 0.3 volt ...1 is asserted, the maximum current source from the driver to any single monitor sync input to initiate the display of a horizontal line. Each signal pair is , the input level at which it actually detects a logic 1. That is terminated by a sync input, the maximum current source from...
4 ACER A211H/A221HQ Go to the timing. HS may be damaged by improper sync timing, pulse duration, absence of sync, abnormal input signal amplitude, or any other anomalous behavior of a graphics card. 1.3.2.7 Digital TMDS Input (DVI and HDMI signal input): These video inputs consist of 0.3 volt ...1 is asserted, the maximum current source from the driver to any single monitor sync input to initiate the display of a horizontal line. Each signal pair is , the input level at which it actually detects a logic 1. That is terminated by a sync input, the maximum current source from...
Acer A221HQV LCD Monitor Service Guide
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...Cat1 Cat1 Cat2 Cat2 Remark CEA Timmi ng 1.3.4.3 Mode Recognition Pull-in Section 3.2. When an input signal which is not connected. Product Specification (continued) ACER A211H/A221HQ 5 Go to alert the user that the monitor cannot support. The Monitor shall display ...Saving Mode a message, "No Signal" for vertical. 1.3.5 Controller Requirements: 1.3.5.1 General Requirements: The monitor shall include a ...
...Cat1 Cat1 Cat2 Cat2 Remark CEA Timmi ng 1.3.4.3 Mode Recognition Pull-in Section 3.2. When an input signal which is not connected. Product Specification (continued) ACER A211H/A221HQ 5 Go to alert the user that the monitor cannot support. The Monitor shall display ...Saving Mode a message, "No Signal" for vertical. 1.3.5 Controller Requirements: 1.3.5.1 General Requirements: The monitor shall include a ...
Acer A221HQV LCD Monitor Service Guide
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...it should be stable enough to ensure a stable image. 1.3.5.2 Video Stretching: The monitor shall have the function to "stretch" the video signal, so that conforms to contents page 1. Version. The operating life is automatically expanded to fill the entire screen. 1.3.5.3 Panel Timing and .... The backlight module shall have an IEC receptacle for mains power input and provide sufficient power for M215HW01 V7 Item Min. 6 ACER A211H/A221HQ Go to VESA DDC2B hardware requirements. So the EEPROM data cannot be overwritten. 1.4 Flat Panel: 1.4.1 General Requirements: ...
...it should be stable enough to ensure a stable image. 1.3.5.2 Video Stretching: The monitor shall have the function to "stretch" the video signal, so that conforms to contents page 1. Version. The operating life is automatically expanded to fill the entire screen. 1.3.5.3 Panel Timing and .... The backlight module shall have an IEC receptacle for mains power input and provide sufficient power for M215HW01 V7 Item Min. 6 ACER A211H/A221HQ Go to VESA DDC2B hardware requirements. So the EEPROM data cannot be overwritten. 1.4 Flat Panel: 1.4.1 General Requirements: ...
Acer A221HQV LCD Monitor Service Guide
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... value. for the smaller spot. full black luminance) CR = 600:1(min.), CR=1000:1(typ.) 1.5.2.2 ACM (Auto Contrast Management): The input image signal source may be various levels of monitor after at least 30 minutes warm up . The values specified are measured at 0 viewing angle. The contrast...distance 20 cm from the LCD surface and at 1920x1080/60Hz mode and full white square pattern with contrast/brightness in default value. 8 ACER A211H/A221HQ Go to corresponding low level, so that enhance the contrast rate, this ACM unit can analyze it as below : Brightness ...
... value. for the smaller spot. full black luminance) CR = 600:1(min.), CR=1000:1(typ.) 1.5.2.2 ACM (Auto Contrast Management): The input image signal source may be various levels of monitor after at least 30 minutes warm up . The values specified are measured at 0 viewing angle. The contrast...distance 20 cm from the LCD surface and at 1920x1080/60Hz mode and full white square pattern with contrast/brightness in default value. 8 ACER A211H/A221HQ Go to corresponding low level, so that enhance the contrast rate, this ACM unit can analyze it as below : Brightness ...
Acer A221HQV LCD Monitor Service Guide
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...the video cable is not connected, will show this message,then enter power saving. 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. OSD Menu (continued) 2.4 Acer eColor management: a. b. When the Hsync Frequency, Vsync Frequency or Resolution is no active signal input, will show this message. The message will be flying. Layout as following figure. This ...
...the video cable is not connected, will show this message,then enter power saving. 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. OSD Menu (continued) 2.4 Acer eColor management: a. b. When the Hsync Frequency, Vsync Frequency or Resolution is no active signal input, will show this message. The message will be flying. Layout as following figure. This ...
Acer A221HQV LCD Monitor Service Guide
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... LED is black and colour of the frequency that it is connected normally. Troubleshooting 5.1 Troubleshooting for Acer A211H/A221HQ(1A1D1H): 5.1.1 No display on the screen (Screen is amber): ACER A211H/A221HQ 21 Go to contents page Does OSM display when you push "MENU key. 5. When a signal isn't being inputted, it can't be distinguished.
... LED is black and colour of the frequency that it is connected normally. Troubleshooting 5.1 Troubleshooting for Acer A211H/A221HQ(1A1D1H): 5.1.1 No display on the screen (Screen is amber): ACER A211H/A221HQ 21 Go to contents page Does OSM display when you push "MENU key. 5. When a signal isn't being inputted, it can't be distinguished.
Acer A221HQV LCD Monitor Service Guide
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... video cable. OK NG Refer "Checking the backlight unit" section" Does computer output RGB video signals? OK NG Check OSM menu is connected between the Interface Board and LCD module. 22 ACER A211H/A221HQ Go to contents page 5. Next Page Check the host for failure. Troubleshooting (continued)... 5.1.2 Nothing displays on the screen (Screen is black and colour of video signal output on screen when you push the "MENU"...
... video cable. OK NG Refer "Checking the backlight unit" section" Does computer output RGB video signals? OK NG Check OSM menu is connected between the Interface Board and LCD module. 22 ACER A211H/A221HQ Go to contents page 5. Next Page Check the host for failure. Troubleshooting (continued)... 5.1.2 Nothing displays on the screen (Screen is black and colour of video signal output on screen when you push the "MENU"...
Acer A221HQV LCD Monitor Service Guide
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...108. Failure Point NG 1) FB301 is 5V OK Proceed "Checking the DC/DC NG converter circuit" section. pin1 OK Check the P307 all LVDS signals. OK NG Failure Point I308 is failure Failure Point Printed wire broke between P307 and LCD module. 2) LCD module is blue)continued: Continue Check ...P308 is from 3.3V to contents page 5.1.2 Nothing displays on the screen (Screen is black and colour of LED is failure. Troubleshooting (continued) ACER A211H/A221HQ 23 Go to 0V. Failure Point 1) Printed wire broke between I304 pin2 and pin3 is above -0.7V OK Failure Point I304 is failure...
...108. Failure Point NG 1) FB301 is 5V OK Proceed "Checking the DC/DC NG converter circuit" section. pin1 OK Check the P307 all LVDS signals. OK NG Failure Point I308 is failure Failure Point Printed wire broke between P307 and LCD module. 2) LCD module is blue)continued: Continue Check ...P308 is from 3.3V to contents page 5.1.2 Nothing displays on the screen (Screen is black and colour of LED is failure. Troubleshooting (continued) ACER A211H/A221HQ 23 Go to 0V. Failure Point 1) Printed wire broke between I304 pin2 and pin3 is above -0.7V OK Failure Point I304 is failure...
Acer A221HQV LCD Monitor Service Guide
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... of LCD module is failure. 2) Inverter Cable disconnect Failure Point Printed wire broke between P301 pin2, R304 and I308 pin101. 2) I308 is a PWM signal. Troubleshooting (continued) 5.1.3 Checking the back light unit: Is +22V supplied to contents page 5. Failure Point 1) printed wire broke between P301 pin3, R501... and I308 pin102. OK NG Check the BKLT_ADJ signal of the DC input P301 pin 2 at TTL high level. 24 ACER A211H/A221HQ Go to inverter PWB? (by the power board) OK NG Failure Point Power board of Inverter ...
... of LCD module is failure. 2) Inverter Cable disconnect Failure Point Printed wire broke between P301 pin2, R304 and I308 pin101. 2) I308 is a PWM signal. Troubleshooting (continued) 5.1.3 Checking the back light unit: Is +22V supplied to contents page 5. Failure Point 1) printed wire broke between P301 pin3, R501... and I308 pin102. OK NG Check the BKLT_ADJ signal of the DC input P301 pin 2 at TTL high level. 24 ACER A211H/A221HQ Go to inverter PWB? (by the power board) OK NG Failure Point Power board of Inverter ...
Acer A221HQV LCD Monitor Service Guide
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...too.) 1) Printed wire broke between I308 and P307. Failure Point In the case of D-sub connector. OK NG Check all LVDS signals being output to 0.7Vp-p. OK NG Failure Point Printed wire broke between P302 pin1 and I308 pin30. 2) Video cable is failure..., FB306, C315 is open . 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 host computer, check computer. 2) Video signal cable disconnection. OK NG Failure Point 1) No R, G, B video signals output from computer input on I308 pin25, 27,...
...too.) 1) Printed wire broke between I308 and P307. Failure Point In the case of D-sub connector. OK NG Check all LVDS signals being output to 0.7Vp-p. OK NG Failure Point Printed wire broke between P302 pin1 and I308 pin30. 2) Video cable is failure..., FB306, C315 is open . 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 host computer, check computer. 2) Video signal cable disconnection. OK NG Failure Point 1) No R, G, B video signals output from computer input on I308 pin25, 27,...
Acer A221HQV LCD Monitor Service Guide
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... 17, 18 and I308 pin 12. 13. 2) Video cable is failure. 3) R350, R355 open. Failure Point 1) No DVI video signals output from host computer, check computer. 2) DVI Video signal cable disconnection. Troubleshooting (continued) 5.1.4 Abnormal screen (For DVI and the same for HDMI): Check the DVI video...same path, too.) 1)Printed wire broke between I308 and P303. and DVI_RXC+/- Proceed "Checking the resolution change IC movement" section. signal is 3.3V. Failure Point In the case of DVI connector. signal. (A DVI_RX1+/-, DVI_RX2+/- 26 ACER A211H/A221HQ Go to P307 from I308?
... 17, 18 and I308 pin 12. 13. 2) Video cable is failure. 3) R350, R355 open. Failure Point 1) No DVI video signals output from host computer, check computer. 2) DVI Video signal cable disconnection. Troubleshooting (continued) 5.1.4 Abnormal screen (For DVI and the same for HDMI): Check the DVI video...same path, too.) 1)Printed wire broke between I308 and P303. and DVI_RXC+/- Proceed "Checking the resolution change IC movement" section. signal is 3.3V. Failure Point In the case of DVI connector. signal. (A DVI_RX1+/-, DVI_RX2+/- 26 ACER A211H/A221HQ Go to P307 from I308?
Acer A221HQV LCD Monitor Service Guide
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...Point I308 is not communicatiog in DDC2B mode. Check the voltage on P302 pin12, 15 that is failure. Check the signal on P302 pin 9 that is serial data / clock signal. OK NG Failure Point The Video cable is shorted. OK NG Failure Point 1) Printed wire broke among I308 pin 58... ,R429 is open. 4) D306 or D308 or C320 or C321 is failure. Check the output signal of serial data / clock on I308 pin 59, 58. OK NG Failure Point TheVideo cable is power DC 5 V. 28 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.6 Abnormal plug and play operation( for ...
...Point I308 is not communicatiog in DDC2B mode. Check the voltage on P302 pin12, 15 that is failure. Check the signal on P302 pin 9 that is serial data / clock signal. OK NG Failure Point The Video cable is shorted. OK NG Failure Point 1) Printed wire broke among I308 pin 58... ,R429 is open. 4) D306 or D308 or C320 or C321 is failure. Check the output signal of serial data / clock on I308 pin 59, 58. OK NG Failure Point TheVideo cable is power DC 5 V. 28 ACER A211H/A221HQ Go to contents page 5. Troubleshooting (continued) 5.1.6 Abnormal plug and play operation( for ...
Acer A221HQV LCD Monitor Service Guide
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...,R344, R345 and P303 pin7,6 2) I308 maybe failure. 3) R410, R414 is open. 4) D320 or D321 or C339 or C342 is serial data / clock signal. Failure Point I308 is power DC 5 V. OK NG Check the voltage on P303 pin 16 that is not communicatiog in DDC2B mode. OK NG Failure... Point The Video cable is failure. Troubleshooting (continued) ACER A211H/A221HQ 29 Go to contents page 5.1.6 Abnormal plug and play operation (For DVI and the same for HDMI): Confirm the host computersupplies ...
...,R344, R345 and P303 pin7,6 2) I308 maybe failure. 3) R410, R414 is open. 4) D320 or D321 or C339 or C342 is serial data / clock signal. Failure Point I308 is power DC 5 V. OK NG Check the voltage on P303 pin 16 that is not communicatiog in DDC2B mode. OK NG Failure... Point The Video cable is failure. Troubleshooting (continued) ACER A211H/A221HQ 29 Go to contents page 5.1.6 Abnormal plug and play operation (For DVI and the same for HDMI): Confirm the host computersupplies ...
Acer A221HQV LCD Monitor Service Guide
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30 ACER A211H/A221HQ Go to contents page 5. OK NG Failure Point Video cable is failure. Check the horizontal sync signal on I308 pin21 TTL level. Check the horizontal sync signal on I308 pin 22 TTL level. Failure Point 1) Printed wire broke between P302 pin13 and I308 pin22. 2) FB304..., R405 is open . 3) D310,R318 or C313 is short. 5.1.7.2 Checking the control circuit of horizontal sync pluse: Check the horizontal sync signal on P302 pin14 TTL level. OK NG Failure Point Proceed "Checking the resolution change IC movement" section. OK NG Failure Point Proceed "Checking...
30 ACER A211H/A221HQ Go to contents page 5. OK NG Failure Point Video cable is failure. Check the horizontal sync signal on I308 pin21 TTL level. Check the horizontal sync signal on I308 pin 22 TTL level. Failure Point 1) Printed wire broke between P302 pin13 and I308 pin22. 2) FB304..., R405 is open . 3) D310,R318 or C313 is short. 5.1.7.2 Checking the control circuit of horizontal sync pluse: Check the horizontal sync signal on P302 pin14 TTL level. OK NG Failure Point Proceed "Checking the resolution change IC movement" section. OK NG Failure Point Proceed "Checking...
Acer A221HQV LCD Monitor Service Guide
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Failure Point 1) Printer wire broke between I308 pin 125 and 2) C391 is short. 3) I308 is failure. 5. ACER A211H/A221HQ 31 Go to I308 pin 127 and 128 at normal operation. Check X301 27MHz clock input to contents page OK NG Proceed " Checking .... Check +1.2V supply on I304 pin2. OK NG Proceed " Checking the DC/DC converter circuit" section. OK NG Check I308 pin 115,116,117 SPI signal. OK NG Check I308 pin 125 RSTB signal is short or open. 3) X301 failure. OK NG Failure Point I308 failure.
Failure Point 1) Printer wire broke between I308 pin 125 and 2) C391 is short. 3) I308 is failure. 5. ACER A211H/A221HQ 31 Go to I308 pin 127 and 128 at normal operation. Check X301 27MHz clock input to contents page OK NG Proceed " Checking .... Check +1.2V supply on I304 pin2. OK NG Proceed " Checking the DC/DC converter circuit" section. OK NG Check I308 pin 115,116,117 SPI signal. OK NG Check I308 pin 125 RSTB signal is short or open. 3) X301 failure. OK NG Failure Point I308 failure.
Acer A221HQV LCD Monitor Service Guide
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... for P216H/ P226HQ(1A1D): 5.2.1 No display on the screen (Screen is amber): ACER A211H/A221HQ 33 Go to contents page Does OSD display when you push MENU button. NG Proceed "No OSD display" section. Check if the sync signal from computer is output and if the video cable is indicated with "OUT... RANGE" at OK the time of LED is black and colour of the frequency that it 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. When...
... for P216H/ P226HQ(1A1D): 5.2.1 No display on the screen (Screen is amber): ACER A211H/A221HQ 33 Go to contents page Does OSD display when you push MENU button. NG Proceed "No OSD display" section. Check if the sync signal from computer is output and if the video cable is indicated with "OUT... RANGE" at OK the time of LED is black and colour of the frequency that it 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. When...
Acer A221HQV LCD Monitor Service Guide
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Check the host for failure. Does computer output RGB video signals? (VGA or DVI) 1) Change pattern of LED is display on the host. NG 2) ... OK NG Refer "Checking the backlight unit" section" Check the video cable for output signal with all black only. Check if the LCD module signal cable is disconnected. Failure Point NG The LVDS cable is connected between the Interface Board ...) 5.2.2 Nothing displays on the screen (Screen is black and colour of video signal output on screen when you push NG the "MENU" key. OK OK Proceed "Abnormal sreen" section" Next Page...
Check the host for failure. Does computer output RGB video signals? (VGA or DVI) 1) Change pattern of LED is display on the host. NG 2) ... OK NG Refer "Checking the backlight unit" section" Check the video cable for output signal with all black only. Check if the LCD module signal cable is disconnected. Failure Point NG The LVDS cable is connected between the Interface Board ...) 5.2.2 Nothing displays on the screen (Screen is black and colour of video signal output on screen when you push NG the "MENU" key. OK OK Proceed "Abnormal sreen" section" Next Page...
Acer A221HQV LCD Monitor Service Guide
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...low. Troubleshooting (continued) 5.2.2 Nothing displays on the screen (Screen is black and colour of the Q301 pin 1 (with R309) at 5V. Check the PANEL VCC_EN signal of LED is blue)continued: Continue Check the 5V power are supplied on CN306 pin 1, 2, 3, (to contents page 5. OK Failure Point NG (1) Printed wire ...broke between Q301 pin 1 and I310 pin 64. 2) R309 is DC power at high level. OK Check the CN306 all LVDS signals. 36 ACER A211H/A221HQ Go to NG the LCD panel module) Check if the Voltage on I303 pin S that Gate level is failure.
...low. Troubleshooting (continued) 5.2.2 Nothing displays on the screen (Screen is black and colour of the Q301 pin 1 (with R309) at 5V. Check the PANEL VCC_EN signal of LED is blue)continued: Continue Check the 5V power are supplied on CN306 pin 1, 2, 3, (to contents page 5. OK Failure Point NG (1) Printed wire ...broke between Q301 pin 1 and I310 pin 64. 2) R309 is DC power at high level. OK Check the CN306 all LVDS signals. 36 ACER A211H/A221HQ Go to NG the LCD panel module) Check if the Voltage on I303 pin S that Gate level is failure.