AL1751 Service Guide
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... more of the FCC Rules. Dangerously high voltages are designed to radio communications. Refer servicing to rain or moisture. Notice: 1. Shielded interface cables and AC power cord, if any radio or TV interference caused by turning the equipment off and on a circuit different from that to which can radiate radio frequency...
... more of the FCC Rules. Dangerously high voltages are designed to radio communications. Refer servicing to rain or moisture. Notice: 1. Shielded interface cables and AC power cord, if any radio or TV interference caused by turning the equipment off and on a circuit different from that to which can radiate radio frequency...
AL1751 Service Guide
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... fire or electric shock. The monitor is provided. Never spill liquids on an unstable trolley, stand, or table. If your dealer or local power company. This will fit only into the slot on the label. Overloading can expose you mount the monitor on a bed, sofa, rug,.... If the monitor falls, it can injure a person and cause serious damage to service the monitor yourself; To ensure reliable operation of power supplied to qualified service personnel To ensure satisfactory operation, use the monitor only with UL listed computers which have UL, CSA listed license 6...
... fire or electric shock. The monitor is provided. Never spill liquids on an unstable trolley, stand, or table. If your dealer or local power company. This will fit only into the slot on the label. Overloading can expose you mount the monitor on a bed, sofa, rug,.... If the monitor falls, it can injure a person and cause serious damage to service the monitor yourself; To ensure reliable operation of power supplied to qualified service personnel To ensure satisfactory operation, use the monitor only with UL listed computers which have UL, CSA listed license 6...
AL1751 Service Guide
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...99% or more. You 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 LCD screen has effective pixels of the fluorescent light, the screen may ...flicker during initial use . Turn off the Power Switch for hours. Due to make sure the flicker disappears. In this case, the screen is displayed for hours. 7 It may include blemishes of 0....
...99% or more. You 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 LCD screen has effective pixels of the fluorescent light, the screen may ...flicker during initial use . Turn off the Power Switch for hours. Due to make sure the flicker disappears. In this case, the screen is displayed for hours. 7 It may include blemishes of 0....
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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Description The LCD monitor is 50k hours or more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in stereo audio amplifier with no radiation. Chart of speakers. This will alleviate the growing health concerns. It is also a ...with OSD control to general 15 pin D-sub VGA connector and 24 pin DVI connector. This monitor can be directly connected 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 ...
Description The LCD monitor is 50k hours or more desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in stereo audio amplifier with no radiation. Chart of speakers. This will alleviate the growing health concerns. It is also a ...with OSD control to general 15 pin D-sub VGA connector and 24 pin DVI connector. This monitor can be directly connected 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 ...
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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CCFL Drive. Monitor Block Diagram The LCD MONITOR will provide the 12V DC-power to inverter/power board and main board. The adapter 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. 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 The Inverter board will drive the backlight of panel.
CCFL Drive. Monitor Block Diagram The LCD MONITOR will provide the 12V DC-power to inverter/power board and main board. The adapter 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. 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 The Inverter board will drive the backlight of panel.
AL1751 Service Guide
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... it to show the coming from 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.... Scalar initializes. 10) In standby mode? 11) Update the lifetime of brightness from analog or digital port? 16) Display " No Input Signal " message. 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
... it to show the coming from 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.... Scalar initializes. 10) In standby mode? 11) Update the lifetime of brightness from analog or digital port? 16) Display " No Input Signal " message. 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
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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... video input signal. The display is restored by pressing a key on the I²C protocol. Using The Right Power Cord The accessory power cord for the power cord shall be 125 volts AC. When there is no video input signal this monitor to be non-functional if...period, will automatically switch to a "Screen Saver" feature except the display is completely off. In order for connection to the host that power supply cord needs to conserve electrical energy by the Video Electronics Standards Association (VESA) and/or the United States Environmental Protection Agency (EPA) ...
... video input signal. The display is restored by pressing a key on the I²C protocol. Using The Right Power Cord The accessory power cord for the power cord shall be 125 volts AC. When there is no video input signal this monitor to be non-functional if...period, will automatically switch to a "Screen Saver" feature except the display is completely off. In order for connection to the host that power supply cord needs to conserve electrical energy by the Video Electronics Standards Association (VESA) and/or the United States Environmental Protection Agency (EPA) ...
AL1751 Service Guide
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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 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?
AL1751 Service Guide
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NG OK Replace PANEL X402 oscillate waveform is high level? Check Correspondent component. 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
NG OK Replace PANEL X402 oscillate waveform is high level? Check Correspondent component. 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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6.No Audio Mute and volume setting 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? NG OK Check input signal of U601 is 12V? Check connecting is ok?
6.No Audio Mute and volume setting 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? NG OK Check input signal of U601 is 12V? Check connecting is ok?
AL1751 Service Guide
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.... 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 24 - TMDS Data0+ TMDS Data 0/5 Shield TMDS Data5TMDS Data5+ DDC Clock Shield TMDS Clock+ DDC TMDS Clock- 38 DESCRIPTION TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0- Pin Color Display Signal Cable (D-sub) DESCRIPTION Red Green Blue Monitor Ground DDC-Return R-Ground G-Ground B-Ground PI N NO...
.... 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 24 - TMDS Data0+ TMDS Data 0/5 Shield TMDS Data5TMDS Data5+ DDC Clock Shield TMDS Clock+ DDC TMDS Clock- 38 DESCRIPTION TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0- Pin Color Display Signal Cable (D-sub) DESCRIPTION Red Green Blue Monitor Ground DDC-Return R-Ground G-Ground B-Ground PI N NO...
AL1751 Service Guide
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... 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 Schematic Diagram Chapter 6 TSU56AK B1 TXD RXD DDC_CLK DDC_DAT DDC_WP ST_DET1 ST_DET2 RIN GNDR... 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-
... 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 Schematic Diagram Chapter 6 TSU56AK B1 TXD RXD DDC_CLK DDC_DAT DDC_WP ST_DET1 ST_DET2 RIN GNDR... 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-
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