AL1702 Service Guide
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Service Manual 17-inch LCD Monitor AL1702
Service Manual 17-inch LCD Monitor AL1702
AL1702 Service Guide
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...(option). 3.2 Power (Circuit diagrams MAIN PWB 3 of 8) 3.5.1 P305 connector The P305 is 14.318 MHz. And a 12V power supply for LCD module, MCU, logic. Based on this conversion, this device performs interpolation during pixel extension. The I305 source voltage is 3.3V and 2.5V, the...function, and ISP / DDC2Bi function. The analog R, G, B signal input entered from MCU through the incorporated A/D converter. and H/V sync to LCD module. AL1702 3. The output voltage is 5 voltage. 3.5.2 MCU (Circuit diagrams MAIN PWB 7 of 8) The analog video signals input, the AC-coupled video...
...(option). 3.2 Power (Circuit diagrams MAIN PWB 3 of 8) 3.5.1 P305 connector The P305 is 14.318 MHz. And a 12V power supply for LCD module, MCU, logic. Based on this conversion, this device performs interpolation during pixel extension. The I305 source voltage is 3.3V and 2.5V, the...function, and ISP / DDC2Bi function. The analog R, G, B signal input entered from MCU through the incorporated A/D converter. and H/V sync to LCD module. AL1702 3. The output voltage is 5 voltage. 3.5.2 MCU (Circuit diagrams MAIN PWB 7 of 8) The analog video signals input, the AC-coupled video...
AL1702 Service Guide
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...direct bus, between I308 and MCU is effected through the IIC bus SCL (pin14) and SDA (pin13) of audio power, and through DDC2Bi bus control LCD monitor. Each parameter is stored in the I308 EEPROM, the contents of I307 based on Table 1. Can use ISP function for the host PC system..., in order to modify the respective setting values. Whether the switch has been pressed is identified with the switch input level that is no power. AL1702 3.5.3 X302 crystal The X302 crystal is 11.0592MHz, support the operated clock to the MCU. 3.5.4 Reset circuit The C396, R379, D316 is support reset signal...
...direct bus, between I308 and MCU is effected through the IIC bus SCL (pin14) and SDA (pin13) of audio power, and through DDC2Bi bus control LCD monitor. Each parameter is stored in the I308 EEPROM, the contents of I307 based on Table 1. Can use ISP function for the host PC system..., in order to modify the respective setting values. Whether the switch has been pressed is identified with the switch input level that is no power. AL1702 3.5.3 X302 crystal The X302 crystal is 11.0592MHz, support the operated clock to the MCU. 3.5.4 Reset circuit The C396, R379, D316 is support reset signal...
AL1702 Service Guide
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NG OK Failure Point The cable is connected between the MAIN PWB and LCD module. Check the host for failure. Next Page Page 12 NG OK Refer "Checking the backlight unit" section" Does computer output RGB video signals? NG ... signal output on the host. 2)Rsconnect the video cable. 3)Change the video cable. Check OSM menu is display on screen (Screen is green) AL1702 Is backlight lit? NG OK Proceed "Abnormal sreen" dection" Check if the LCD video signal cable is disconnected. Nothing displays on screen when you push the "PROCEED" key. 2.
NG OK Failure Point The cable is connected between the MAIN PWB and LCD module. Check the host for failure. Next Page Page 12 NG OK Refer "Checking the backlight unit" section" Does computer output RGB video signals? NG ... signal output on the host. 2)Rsconnect the video cable. 3)Change the video cable. Check OSM menu is display on screen (Screen is green) AL1702 Is backlight lit? NG OK Proceed "Abnormal sreen" dection" Check if the LCD video signal cable is disconnected. Nothing displays on screen when you push the "PROCEED" key. 2.
AL1702 Service Guide
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NG OK Failure Point 1) Printed wire broke betweenP305 and I305 LVDS signals. 2) I305 is low. Continue AL1702 Check the 5V power are supplied on P305 pin 1, 2, 3 (to the LCD panel) NG Check if theVoltage on I312 pin,1 that is DC power at TTL high level. NG OK Failure Point 1) Prined ...TTL level on I312 pin2 that TTL level is failure. NG OK Failure Point 1) FB314 is open. 2) Printed wire broke between P305 and LCD module. 2) LCD module is failure. OK NG OK Check the PANELVCC_EN signal of the rectangle input Q303 pin2 at 5V. Failure Point I312 is failure.
NG OK Failure Point 1) Printed wire broke betweenP305 and I305 LVDS signals. 2) I305 is low. Continue AL1702 Check the 5V power are supplied on P305 pin 1, 2, 3 (to the LCD panel) NG Check if theVoltage on I312 pin,1 that is DC power at TTL high level. NG OK Failure Point 1) Prined ...TTL level on I312 pin2 that TTL level is failure. NG OK Failure Point 1) FB314 is open. 2) Printed wire broke between P305 and LCD module. 2) LCD module is failure. OK NG OK Check the PANELVCC_EN signal of the rectangle input Q303 pin2 at 5V. Failure Point I312 is failure.
AL1702 Service Guide
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Checking the back light unit AL1702 Is +12V supplied to inverter PWB ? (by the power board) NG OK Failure Point 1) Inverter cable disconnection. 2) Power board failure. NG OK Failure Point 1) printed ... 31. 2) I307 is a PWM signal. 3. Check the BKLT_EN signal of the input P301 pin5 from I305 pin73 is failure. Failure Point Back light unit of LCD module is failure. Check the BKLT_ADJ signal of the rectangle input P301 pin 6 at TTL high level. NG OK Failure Point 1) printed wire broke between...
Checking the back light unit AL1702 Is +12V supplied to inverter PWB ? (by the power board) NG OK Failure Point 1) Inverter cable disconnection. 2) Power board failure. NG OK Failure Point 1) printed ... 31. 2) I307 is a PWM signal. 3. Check the BKLT_EN signal of the input P301 pin5 from I305 pin73 is failure. Failure Point Back light unit of LCD module is failure. Check the BKLT_ADJ signal of the rectangle input P301 pin 6 at TTL high level. NG OK Failure Point 1) printed wire broke between...
AL1702W Service Guide
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... screen may find slightly uneven brightness on the screen depending on the desktop pattern you mount the monitor on again to the nature of the LCD screen, an afterimage of the monitor and to qualified service personnel z To ensure satisfactory operation, use the monitor only with a third (grounding)...ground the appliance safely. It could short circuit parts causing a fire or electric shock. z The LCD screen has effective pixels of the time. If you use . Special Notes On LCD Monitors The following symptoms are not sure of the type of the fluorescent light, the screen may ...
... screen may find slightly uneven brightness on the screen depending on the desktop pattern you mount the monitor on again to the nature of the LCD screen, an afterimage of the monitor and to qualified service personnel z To ensure satisfactory operation, use the monitor only with a third (grounding)...ground the appliance safely. It could short circuit parts causing a fire or electric shock. z The LCD screen has effective pixels of the time. If you use . Special Notes On LCD Monitors The following symptoms are not sure of the type of the fluorescent light, the screen may ...
AL1702W Service Guide
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Table Of Contents Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Monitor Block Diagram Main Board Diagram Software Flow chart Main Board Layout Adjusting the viewing angle Rear Bezel Chapter 2 Operating Instructions ...
Table Of Contents Chapter 1 Monitor Features Introduction Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Monitor Block Diagram Main Board Diagram Software Flow chart Main Board Layout Adjusting the viewing angle Rear Bezel Chapter 2 Operating Instructions ...
AL1702W Service Guide
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... consumes less power and gets less weight in stereo audio amplifier with OSD control to provide a performance oriented product with the latest LCD technology to drive a pair of AL1702W Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack Microphone Jack USB ...DDC2B No No No Not support Yes / No 7 There is a build-in addition MTBF target is designed with no radiation. Description The LCD monitor is 50k hours or more. Monitor Features Chapter 1 Introduction Scope This specification defines the requirements for the 17" MICROPROCESSOR based Multi-mode...
... consumes less power and gets less weight in stereo audio amplifier with OSD control to provide a performance oriented product with the latest LCD technology to drive a pair of AL1702W Panel Signal Interface Sync Type Color Temp User Adjust DDC Speaker Headphone Jack Microphone Jack USB ...DDC2B No No No Not support Yes / No 7 There is a build-in addition MTBF target is designed with no radiation. Description The LCD monitor is 50k hours or more. Monitor Features Chapter 1 Introduction Scope This specification defines the requirements for the 17" MICROPROCESSOR based Multi-mode...
AL1702W Service Guide
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... User red/white balance, Green/white balance and Blue/white balance control Power input Ambient temperature Display mode : Dark room : 40 cm for LCD performance, 20 cm for LCD failures : >30 minutes : Chroma 7120 signal generator or equivalent, directly Connected to factory preset value, which allows that the brightest two of...
... User red/white balance, Green/white balance and Blue/white balance control Power input Ambient temperature Display mode : Dark room : 40 cm for LCD performance, 20 cm for LCD failures : >30 minutes : Chroma 7120 signal generator or equivalent, directly Connected to factory preset value, which allows that the brightest two of...
AL1702W Service Guide
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Monitor Block Diagram The LCD MONITOR will provide the 12V DC-power to inverter/power board. The Inverter board will drive the backlight of panel and the DC-DC conversion, The Adapter will contain a main board, a power board, and keypad board which house the flat panel control logic, brightness control logic and DDC. CCFL Drive. Flat Panel and CCFL backlight Inverter Board AC-IN 100V-240 Main Board Keyboard HOST Computer Video signal, DDC 14
Monitor Block Diagram The LCD MONITOR will provide the 12V DC-power to inverter/power board. The Inverter board will drive the backlight of panel and the DC-DC conversion, The Adapter will contain a main board, a power board, and keypad board which house the flat panel control logic, brightness control logic and DDC. CCFL Drive. Flat Panel and CCFL backlight Inverter Board AC-IN 100V-240 Main Board Keyboard HOST Computer Video signal, DDC 14
AL1702W User's Guide
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. TABLE OF CONTENTS FOR YOUR SAFETY 1 SAFETY PRECAUTIONS 2 SPECIAL NOTES ON LCD MONITORS 3 BEFORE YOU OPERATE THE MONITOR 3 FEATURES 3 PACKING LIST 3 INSTALLATION INSTRUCTIONS 4 CONTROLS AND CONNECTORS 5 ADJUSTING THE VIEWING ANGLE 6 OPERATING INSTRUCTIONS 7 GENERAL INSTRUCTIONS 7 HOW TO ADJUST A ...-17 FACTORY PRESET TIMING TABLE 18 CONNECTOR PIN ASSIGNMENT 19 For more information and help in recycling, please visit the following websites: Worldwide: http://global.acer.com/about/sustainability.htm
. TABLE OF CONTENTS FOR YOUR SAFETY 1 SAFETY PRECAUTIONS 2 SPECIAL NOTES ON LCD MONITORS 3 BEFORE YOU OPERATE THE MONITOR 3 FEATURES 3 PACKING LIST 3 INSTALLATION INSTRUCTIONS 4 CONTROLS AND CONNECTORS 5 ADJUSTING THE VIEWING ANGLE 6 OPERATING INSTRUCTIONS 7 GENERAL INSTRUCTIONS 7 HOW TO ADJUST A ...-17 FACTORY PRESET TIMING TABLE 18 CONNECTOR PIN ASSIGNMENT 19 For more information and help in recycling, please visit the following websites: Worldwide: http://global.acer.com/about/sustainability.htm
AL1702W User's Guide
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... • Crisp, Clear Display for hours. In this case, the screen is displayed for hours. Power Cord 4. 15-pin D-Sub Cable 5 . LCD Monitor 2. It may include blemishes of 0.01% or less such as a missing pixel or a pixel lit all of the time. • Due to the nature ...of 99.99% or more. NOTES • Due to the nature of the LCD screen, an afterimage of the previous screen may find slightly uneven brightness on the screen depending on again to make sure the flicker disappears. •...
... • Crisp, Clear Display for hours. In this case, the screen is displayed for hours. Power Cord 4. 15-pin D-Sub Cable 5 . LCD Monitor 2. It may include blemishes of 0.01% or less such as a missing pixel or a pixel lit all of the time. • Due to the nature ...of 99.99% or more. NOTES • Due to the nature of the LCD screen, an afterimage of the previous screen may find slightly uneven brightness on the screen depending on again to make sure the flicker disappears. •...
AL1702W User's Guide
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... socket on your PC, depending on the type of synthetic rubber according to be used . 4 Make sure that allows operation in your LCD monitor's AC-power-input. Connect the AC-power cord into your area. 2. The relevant national installation and/or equipment regulations shall be ...used with your LCD monitor. This LCD monitor has an External universal power supply that the power cord is required.) 3. Alternative a flexible cord be of power cord supplied ...
... socket on your PC, depending on the type of synthetic rubber according to be used . 4 Make sure that allows operation in your LCD monitor's AC-power-input. Connect the AC-power cord into your area. 2. The relevant national installation and/or equipment regulations shall be ...used with your LCD monitor. This LCD monitor has an External universal power supply that the power cord is required.) 3. Alternative a flexible cord be of power cord supplied ...
AL1702W User's Guide
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ADJUSTING THE VIEWING ANGLE • For optimal viewing it is required not to catch your own preference. • Hold the stand so you do not topple the monitor when you change the monitor's angle. • You are able to adjust the monitor's angle from -5° to your fingers or hands when you change the angle. 6 It may cause damage or break the LCD screen. • Careful attention is recommended to look at the full face of the monitor, then adjust the monitor's angle to 15°. 15 -5 Figure 3 NOTES • Do not touch the LCD screen when you change the angle.
ADJUSTING THE VIEWING ANGLE • For optimal viewing it is required not to catch your own preference. • Hold the stand so you do not topple the monitor when you change the monitor's angle. • You are able to adjust the monitor's angle from -5° to your fingers or hands when you change the angle. 6 It may cause damage or break the LCD screen. • Careful attention is recommended to look at the full face of the monitor, then adjust the monitor's angle to 15°. 15 -5 Figure 3 NOTES • Do not touch the LCD screen when you change the angle.
AL1702W User's Guide
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APPENDIX SPECIFICATIONS Driving system TFT Color LCD LCD Panel Size 17" Pixel pitch Brightness 0.255mm( H ) × 0.255mm( V ) 250cd/m2 (Typical) Contrast 700:1 (Typical) Viewable angle 140° (H) 130° (V) Response time 8 ms Input ...
APPENDIX SPECIFICATIONS Driving system TFT Color LCD LCD Panel Size 17" Pixel pitch Brightness 0.255mm( H ) × 0.255mm( V ) 250cd/m2 (Typical) Contrast 700:1 (Typical) Viewable angle 140° (H) 130° (V) Response time 8 ms Input ...