AL1751 Service Guide
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... to comply with the emission limits. 3. These limits are present inside the monitor. Reorient or relocate the receiving antenna. 2. Notice: 1. Shielded interface cables and AC power cord, if any radio or TV interference caused by one or more of the user to this equipment does cause harmful interference to radio or...
... to comply with the emission limits. 3. These limits are present inside the monitor. Reorient or relocate the receiving antenna. 2. Notice: 1. Shielded interface cables and AC power cord, if any radio or TV interference caused by one or more of the user to this equipment does cause harmful interference to radio or...
AL1751 Service Guide
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...cause serious damage to qualified service personnel To ensure satisfactory operation, use a mounting kit approved by the manufacturer or sold with the attached power adapter (output 12V DC) which have an electrician install the correct outlet, or use the monitor near the equipment and shall be operated... marked between 100 - 240V AC, Min. 3.5A. Do not place the monitor on the label. Do not defeat the safety purpose of power source indicated on a bed, sofa, rug, or similar surface. Please refer all servicing to the appliance. The monitor should be easily accessible....
...cause serious damage to qualified service personnel To ensure satisfactory operation, use a mounting kit approved by the manufacturer or sold with the attached power adapter (output 12V DC) which have an electrician install the correct outlet, or use the monitor near the equipment and shall be operated... marked between 100 - 240V AC, Min. 3.5A. Do not place the monitor on the label. Do not defeat the safety purpose of power source indicated on a bed, sofa, rug, or similar surface. Please refer all servicing to the appliance. The monitor should be easily accessible....
AL1751 Service Guide
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... the time. You may find slightly uneven brightness on the screen depending on again to the nature of 99.99% or more. Turn off the Power Switch for hours. It may include blemishes of 0.01% or less such as a missing pixel or a pixel lit all of the previous screen may flicker... fluorescent light, the screen may remain after switching the image, when the same image is recovered slowly by changing the image or turning off the Power Switch and then turn it on the desktop pattern you use .
... the time. You may find slightly uneven brightness on the screen depending on again to the nature of 99.99% or more. Turn off the Power Switch for hours. It may include blemishes of 0.01% or less such as a missing pixel or a pixel lit all of the previous screen may flicker... fluorescent light, the screen may remain after switching the image, when the same image is recovered slowly by changing the image or turning off the Power Switch and then turn it on the desktop pattern you use .
AL1751 Service Guide
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... Bezel Adjusting the picture LOGO Chapter 2 Machine Disassembly Chapter 3 Troubleshooting Chapter 4 Connector Information Chapter 5 FRU (Field Replacement Unit) List Exploded Diagram Chapter 6 Schematic Diagram Top Power Input Scaler Panel interface Mpu Adapter Board Inverter Board 9 10 12 11 12 14 15 16 17 19 21 22 26 27 32 38 39...
... Bezel Adjusting the picture LOGO Chapter 2 Machine Disassembly Chapter 3 Troubleshooting Chapter 4 Connector Information Chapter 5 FRU (Field Replacement Unit) List Exploded Diagram Chapter 6 Schematic Diagram Top Power Input Scaler Panel interface Mpu Adapter Board Inverter Board 9 10 12 11 12 14 15 16 17 19 21 22 26 27 32 38 39...
AL1751 Service Guide
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... amplifier with OSD control to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more desktop space, and comparing to drive a pair of AL1751 Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack... Microphone Jack USB Hub Tilt / Swivel 17" SEC LTM170EU-L21 D-SUB DVI Separate / Compatible Support DDC2B 1.5W + 1.5W (Rated power) 3.5mm stereo phone jack, green color No...
... amplifier with OSD control to the traditional CRT monitor, it consumes less power and gets less weight in addition MTBF target is 50k hours or more desktop space, and comparing to drive a pair of AL1751 Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack... Microphone Jack USB Hub Tilt / Swivel 17" SEC LTM170EU-L21 D-SUB DVI Separate / Compatible Support DDC2B 1.5W + 1.5W (Rated power) 3.5mm stereo phone jack, green color No...
AL1751 Service Guide
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.... Control settings Minolta CA100 photometer, or equivalent User brightness control : User contrast control : User red/white balance, Green/white balance and Blue/white balance control : Power input : Ambient temperature : Analog input mode : Set to Factory preset value (cut off raster) T Set to the monitor under the following conditions, unless otherwise specified...
.... Control settings Minolta CA100 photometer, or equivalent User brightness control : User contrast control : User red/white balance, Green/white balance and Blue/white balance control : Power input : Ambient temperature : Analog input mode : Set to Factory preset value (cut off raster) T Set to the monitor under the following conditions, unless otherwise specified...
AL1751 Service Guide
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Monitor Block Diagram The LCD MONITOR will drive the backlight of panel. Flat Panel and CCFL backlight Inverter board Adapter AC-IN 100V-240V Main Board (Include: Audio board, keyboard) RS232 Connector For white balance adjustment in factory mode HOST Computer Video signal, DDC 14 CCFL Drive. The Inverter board will contain a main board (include: keypad board and audio board), an inverter board, adapter which house the flat panel control logic, brightness control logic and DDC. The adapter will provide the 12V DC-power to inverter/power board and main board.
Monitor Block Diagram The LCD MONITOR will drive the backlight of panel. Flat Panel and CCFL backlight Inverter board Adapter AC-IN 100V-240V Main Board (Include: Audio board, keyboard) RS232 Connector For white balance adjustment in factory mode HOST Computer Video signal, DDC 14 CCFL Drive. The Inverter board will contain a main board (include: keypad board and audio board), an inverter board, adapter which house the flat panel control logic, brightness control logic and DDC. The adapter will provide the 12V DC-power to inverter/power board and main board.
AL1751 Service Guide
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And go into eeprom. Turn on the LED and set it . 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Saving the power key status into standby mode after the message disappear. 17) Program the scalar to be able to green color. Is... the power key pressed? 10 N Y N 12 Y 11 13 N Y 14 15 N 16 Y 17 18 N 19 Y 16 Scalar initializes. 10) In standby mode? 11) Update the lifetime of brightness ...
And go into eeprom. Turn on the LED and set it . 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Saving the power key status into standby mode after the message disappear. 17) Program the scalar to be able to green color. Is... the power key pressed? 10 N Y N 12 Y 11 13 N Y 14 15 N 16 Y 17 18 N 19 Y 16 Scalar initializes. 10) In standby mode? 11) Update the lifetime of brightness ...
AL1751 Service Guide
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... W78E65-40P AT24C16AN-10SI-2.7 SI-8050SD AZ1117D-1.8 D-SUB 15PIN DVID CONN. 24P FEMALE PIN HEADER 24P 2.0mm WAFER 4P RIGHT ANGLE PHONE JACK PHONE JACK power jack WAFER 6P RIGHT ANGLE PI TDA7496L BY ST CRYSTAL 14.318MHzHC-49U 20MHZ 18
... W78E65-40P AT24C16AN-10SI-2.7 SI-8050SD AZ1117D-1.8 D-SUB 15PIN DVID CONN. 24P FEMALE PIN HEADER 24P 2.0mm WAFER 4P RIGHT ANGLE PHONE JACK PHONE JACK power jack WAFER 6P RIGHT ANGLE PI TDA7496L BY ST CRYSTAL 14.318MHzHC-49U 20MHZ 18
AL1751 Service Guide
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...non-functional if there is no video input signal. When there is no video-input signal present. This reduces the monitor's internal power supply consumption. The voltage rating for the Northern American region is completely off. Please note that continuously transmits EDID information. The host...equipped with a molded-on type connector body, rated 10A, 250V, having standard CEE-22 female configuration. Using The Right Power Cord The accessory power cord for the power cord shall be showed in two levels, DDC1 and DDC2B. The other end terminates with VESA DDC1/2B capabilities according ...
...non-functional if there is no video input signal. When there is no video-input signal present. This reduces the monitor's internal power supply consumption. The voltage rating for the Northern American region is completely off. Please note that continuously transmits EDID information. The host...equipped with a molded-on type connector body, rated 10A, 250V, having standard CEE-22 female configuration. Using The Right Power Cord The accessory power cord for the power cord shall be showed in two levels, DDC1 and DDC2B. The other end terminates with VESA DDC1/2B capabilities according ...
AL1751 Service Guide
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NG OK Replace U702 NG X402 oscillate waveform is normal NG Measure 12V input voltage OK NG Check the adapter section Measure U702 PIN2=5V? Chapter 3 Troubleshooting This chapter provides troubleshooting information for the AL1751: 1. No power No power Press power key and look if the picture is normal NG Replace X402 OK Replace U402 NG Replace U401 32
NG OK Replace U702 NG X402 oscillate waveform is normal NG Measure 12V input voltage OK NG Check the adapter section Measure U702 PIN2=5V? Chapter 3 Troubleshooting This chapter provides troubleshooting information for the AL1751: 1. No power No power Press power key and look if the picture is normal NG Replace X402 OK Replace U402 NG Replace U401 32
AL1751 Service Guide
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Check Correspondent component. NG OK Replace PANEL X402 oscillate waveform is high level? 3. OK NG Check Q703 and Q704 are broken or CN503 solder? Panel Power Circuit Measure Q703 base is normal NG Replace X402 OK Replace U402 NG Replace U401 34
Check Correspondent component. NG OK Replace PANEL X402 oscillate waveform is high level? 3. OK NG Check Q703 and Q704 are broken or CN503 solder? Panel Power Circuit Measure Q703 base is normal NG Replace X402 OK Replace U402 NG Replace U401 34
AL1751 Service Guide
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NG Reconnect NG OK Check correspondent component Replace U601 NG Replace speaker 37 NG OK Reset mute and volume Check power supply of U601is ok? 6.No Audio Mute and volume setting is 12V? Check connecting is ok? NG OK Check input signal of U601 is ok?
NG Reconnect NG OK Check correspondent component Replace U601 NG Replace speaker 37 NG OK Reset mute and volume Check power supply of U601is ok? 6.No Audio Mute and volume setting is 12V? Check connecting is ok? NG OK Check input signal of U601 is ok?
AL1751 Service Guide
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.... 24. DESCRIPTION +5V Logic Ground Monitor Ground DDC-Serial Data H-Sync V-Sync DDC-Serial Clock PIN NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 24 - DESCRIPTION TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0- Pin Color Display Signal Cable (DVI) DESCRIPTION TMDS Data2TMDS Data2+ TMDS Data 2/4 Shield TMDS Data4TMDS Data4+ DDC Clock DDC...
.... 24. DESCRIPTION +5V Logic Ground Monitor Ground DDC-Serial Data H-Sync V-Sync DDC-Serial Clock PIN NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 24 - DESCRIPTION TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0- Pin Color Display Signal Cable (DVI) DESCRIPTION TMDS Data2TMDS Data2+ TMDS Data 2/4 Shield TMDS Data4TMDS Data4+ DDC Clock DDC...
AL1751 Service Guide
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... onBACKLITE AUDIO_SD AUDIO_MU 6.MCU B6 VCC12V_AUDIO VCC12V_AUDIO AUDIO_MU AUDIO_SD 7.AUDIO B4 VOLUME onBACKLITE onPanel_5V/3.3V VCPU VCC12V_AUDIO VCC3.3 VCC1.8 AdjBACKLITE VAA1 VAA2 VAA3 VAA4 VLCD 2.POWER R+ RG+ GB+ BCLK+ CLK- CSZ SCL SDA HWRESET INT AD0 AD1 AD2 AD3 Volume AdjBACKLITE VLCD 4.SCALER SCHEMATIC VCC1.8 VCC3.3 VAA1 VAA2 VAA3 ...VAA4 VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 PA[0..9] PB[0..9] PA[0..9] PB[0..9] B5 PA[0..9] PB[0..9] VLCD VLCD 5.PANEL INTERFACE Title Size B Date: TSU56AK FOR ACER Document Number TOP Wednesday, January 19, 2005 Sheet 2 Rev D of 8 44
... onBACKLITE AUDIO_SD AUDIO_MU 6.MCU B6 VCC12V_AUDIO VCC12V_AUDIO AUDIO_MU AUDIO_SD 7.AUDIO B4 VOLUME onBACKLITE onPanel_5V/3.3V VCPU VCC12V_AUDIO VCC3.3 VCC1.8 AdjBACKLITE VAA1 VAA2 VAA3 VAA4 VLCD 2.POWER R+ RG+ GB+ BCLK+ CLK- CSZ SCL SDA HWRESET INT AD0 AD1 AD2 AD3 Volume AdjBACKLITE VLCD 4.SCALER SCHEMATIC VCC1.8 VCC3.3 VAA1 VAA2 VAA3 ...VAA4 VCC1.8 VCC3.3 VAA1 VAA2 VAA3 VAA4 PA[0..9] PB[0..9] PA[0..9] PB[0..9] B5 PA[0..9] PB[0..9] VLCD VLCD 5.PANEL INTERFACE Title Size B Date: TSU56AK FOR ACER Document Number TOP Wednesday, January 19, 2005 Sheet 2 Rev D of 8 44
AL1751 Service Guide
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2 5 /ON 3 GND CN701 LP701 POWER JACK 1+12V_IN 6 3 5 2 4 1 INDUTOR-P VCC12V U701 SI-8050SD 1 VIN FBK 4 2 Vout + + C701 C702 C703 C706 C707 0.001uF 220uF/16V 220uF/16V 0.1uF/16V 0.1uF/16V C710 0.... Screw Hole 1 1 1 1 MH5 MH6 MH7 MH8 MH9 MH10 Screw Hole Screw Hole Screw Hole Screw Hole Screw Hole Screw Hole 1 1 1 1 1 1 Title Size B Date: TSU56AK FOR ACER Document Number POWER Wednesday, January 19, 2005 Sheet 3 Rev D of 8 45
2 5 /ON 3 GND CN701 LP701 POWER JACK 1+12V_IN 6 3 5 2 4 1 INDUTOR-P VCC12V U701 SI-8050SD 1 VIN FBK 4 2 Vout + + C701 C702 C703 C706 C707 0.001uF 220uF/16V 220uF/16V 0.1uF/16V 0.1uF/16V C710 0.... Screw Hole 1 1 1 1 MH5 MH6 MH7 MH8 MH9 MH10 Screw Hole Screw Hole Screw Hole Screw Hole Screw Hole Screw Hole 1 1 1 1 1 1 Title Size B Date: TSU56AK FOR ACER Document Number POWER Wednesday, January 19, 2005 Sheet 3 Rev D of 8 45
AL1751 Service Guide
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... DP1 DUAL LED 3 D403 BAV99 1 3 2 1 2 1 C451 1000pF 2 C452 1000pF ENTER R430 470` 1/16W RIGHT R431 470` 1/16W AUTO R432 470` 1/16W LEFT R435 470` 1/16W POWER R436 470` 1/16W D404 BAV99 C443 0.001uF D405 BAV99 C442 0.001uF 49 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 D406 BAV99 C441 0.001uF D407 BAV99 C440 0.001uF KEY_MENU KEY_RIGHT KEY_AUTO KEY_LEFT ...KEY_ONOFF D408 BAV99 C439 VCPU SW401 LCD ONOFF SW402 KEY LEFT 0.001uF SW403 SW404 KEY AUTO KEY RIGHT SW405 KEY MENU Title TSU56AK FOR ACER Size Document Number B MPU Date: Wednesday, January 19, 2005 Sheet 7 Rev D of 8
... DP1 DUAL LED 3 D403 BAV99 1 3 2 1 2 1 C451 1000pF 2 C452 1000pF ENTER R430 470` 1/16W RIGHT R431 470` 1/16W AUTO R432 470` 1/16W LEFT R435 470` 1/16W POWER R436 470` 1/16W D404 BAV99 C443 0.001uF D405 BAV99 C442 0.001uF 49 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 D406 BAV99 C441 0.001uF D407 BAV99 C440 0.001uF KEY_MENU KEY_RIGHT KEY_AUTO KEY_LEFT ...KEY_ONOFF D408 BAV99 C439 VCPU SW401 LCD ONOFF SW402 KEY LEFT 0.001uF SW403 SW404 KEY AUTO KEY RIGHT SW405 KEY MENU Title TSU56AK FOR ACER Size Document Number B MPU Date: Wednesday, January 19, 2005 Sheet 7 Rev D of 8
