Acer AL1706 AL1706 Service Guide
Acer AL1706 Manual
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- Acer AL1706 | AL1706 Service Guide - Page 1
Acer AL1706 Service Guide 1 - Acer AL1706 | AL1706 Service Guide - Page 2
by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated. Disclaimer The information in this guide is subject to change without notice. Acer Incorporated makes no representations or warranties, either expressed - Acer AL1706 | AL1706 Service Guide - Page 3
are used in this manual Screen Messages Denotes actual messages that appear on screen. NOTE WARNING Give bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions. CAUTION IMPORTANT Gives - Acer AL1706 | AL1706 Service Guide - Page 4
available on your regional web or channel. If, for whatever reason, a part number change is made, it will not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIEDERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed - Acer AL1706 | AL1706 Service Guide - Page 5
B digital device, pursuant to Part 15 of the FCC Rules. in accordance with the instructions, may cause harmful changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 2. Shielded interface cables and AC power - Acer AL1706 | AL1706 Service Guide - Page 6
WARNING: To prevent fire or shock hazard, do not expose the monitor to rain or moisture. Dangerously high voltages are present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only 6 - Acer AL1706 | AL1706 Service Guide - Page 7
with LCD monitor and do not indicated a problem. NOTES Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears. You may find slightly uneven brightness on the screen depending - Acer AL1706 | AL1706 Service Guide - Page 8
the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image or turning off the Power Switch for hours. 8 - Acer AL1706 | AL1706 Service Guide - Page 9
Interface Board Diagram Software Flow Chart Interface Board PCB Layout Front Bezel Rear Cover Chapter 2 Operating Instruction 20 Front Bezel Control Adjusting the Monitor How to Optimize the DOS-Mode Chapter 3 Machine Assembly 27 Chapter 4 Troubleshooting 31 Common - Acer AL1706 | AL1706 Service Guide - Page 10
LCD Panel Signal Display Color Dot Clock Max. Resolution Plug & Play EPA ENGERGY STAR Input Connector Driving System Size Pixel pitch Viewable angle Brightness Contrast Ratio Response Time Video Separate Sync. H-Frequency V-Frequency ON MODE OFF MODE Input Video Signal Maximum Screen Size Power - Acer AL1706 | AL1706 Service Guide - Page 11
Controls Switch Function Regulatory Compliance Power Switch Menu > < Auto Contrast/Brightness Phase/Clock H. Position/ V. VCCI, C-Tick, TCO99, CCC, WHQL FACTORY PRESET TIMING TABLE Standard VGA SVGA XGA SXGA IBM MAC Resolution 640 x 480 640 x 480 640 x 480 800 x 600 800 x 600 800 x 600 800 - Acer AL1706 | AL1706 Service Guide - Page 12
Monitor Block Diagram The LCD monitor contains 4 parts: 1. interface board: Deal with VGA input signal and output the signal to panel. 2. Power/inverter board: Provide power to interface board and panel 3. Keypad board: For user to control the LCD monitor. 4. Flat panel: Flat panel (LVDS interface) - Acer AL1706 | AL1706 Service Guide - Page 13
Red Green Blue Vsync Hsync SCL SDA MAIN BOARD DIAGRAM Interface Board DDC A/D & Scaling & OSD MCU EEPROM To LCD module 13 - Acer AL1706 | AL1706 Service Guide - Page 14
Software Flow Chart ACER 17" flow chart item description: 1. MCU initialize. 2. Is scalar. 11. Program the scalar to be able to show the coming mode. 12. Turn on the LED and set it to green color. 13. Process the OSD display 14. Read the keyboard. Is any key pressed? (1) (2) Y (3) No (4) (5) - Acer AL1706 | AL1706 Service Guide - Page 15
MONITOR INTERFACE BOARD PCB LAYOUT 15 - Acer AL1706 | AL1706 Service Guide - Page 16
Symbol: CN103 CN101 U102 X102 U104 U105 CN102 U103 U106 X101 CN105 U101 Component: LVDS connector Connector to power BD 5V to 1.8V regulator Crystal to scaler Scaler "TSU16AK" MCU "Winbond" D-sub connector DDC EEPROM Crystal to MCU Connector to control BD 5V to 3.3V regulator 16 - Acer AL1706 | AL1706 Service Guide - Page 17
FRONT BEZEL 5 4 3 2 1 ITEM 1 2 3 4 5 DESCRIPTION Power Tack Switch Menu/Enter > (Up) < (Down) Auto/Exit 17 - Acer AL1706 | AL1706 Service Guide - Page 18
REAR BEZEL 1 ITEM 1 2 2 DESCRIPTION Three-pronged power cord VGA Cable with blue connector compliance with PC99 18 - Acer AL1706 | AL1706 Service Guide - Page 19
INSTRUCTIONS Press the power button to turn the monitor on or off. The other control buttons are located on the front of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. The power cord should be connected. Connect the video cable from the monitor - Acer AL1706 | AL1706 Service Guide - Page 20
5 Auto/Exit Function Press this button to turn the monitor on or off LED Green - Power On mode LED Orange - Off mode Activate OSD menu factory. To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a cloth lightly dampened with a mild detergent - Acer AL1706 | AL1706 Service Guide - Page 21
ADJUSTING THE MONITOR 1.) Main OSD Menu a. Outline b. Description for OSD Main Sub Menu Sub Menu Menu Icon Item Icon Contrast Description Contrast from digital register Adjustment Range 0-100 50 Reset Value Brightness Backlight Adjustment 0-100 100 Phase Clock H. Position Adjust - Acer AL1706 | AL1706 Service Guide - Page 22
cool color temp. from EEPROM Red gain from digital register N/A N/A 0-100 Green gain from digital register 0-100 N/A N/A The value which we get after phase Information N/A Reset N/A Show the current input timing N/A N/A mode's resolution, H/V frequency Memory Recall N/A N/A 22 - Acer AL1706 | AL1706 Service Guide - Page 23
Exit N/A Exit OSD N/A N/A 23 - Acer AL1706 | AL1706 Service Guide - Page 24
b. OSD Message Description Item Description No Signal When LCD Monitor power on, but video cable is not connected, will show this message, then enter power saving. 3) FACTORY MENU a. How to call out "Factory Menu" At VGA in, Push "AUTO" & "MENU", and plug AC Power cord in sync.. b. Outline 24 - Acer AL1706 | AL1706 Service Guide - Page 25
MONITOR OT OPERATE PROPERLY, THERE MUST BE A VIDEO INPUT SIGNAL. This monitor meets the Green monitor monitor's internal power supply consumption. After the video input signal is restored, full power is restored and the display is automatically redrawn. The appearance is similar to a "Screen - Acer AL1706 | AL1706 Service Guide - Page 26
the disassembly process, collect the screws with the corresponding components to avoid mismatch when putting back the components. 2. The monitor surface is susceptible to scratching! Therefore, lay the monitor on a soft surface when mounting or removing the base. 3. Wear gloves Chassis*1 PCBA Power - Acer AL1706 | AL1706 Service Guide - Page 27
Chassis*1 PCBA Power Board *1 INSULATOR PC,MYLAR SCREW (PW 3*6,M,ZN) *3 PCBA I/F BOARD *1 CABLE 30P FFC HRN ASS'Y 8P SCREW (PW 3*6,M,ZN) *3 PCBA Control Board *1 SCREW (PW 3*4,M,ZN) *2 Insert B/L - Acer AL1706 | AL1706 Service Guide - Page 28
Panel Module *1 Back cover*1 Arm Stand*1 (M4x10,ZN)*4 Bracket Finger*1 (M4x18,ZN)*3 Stand plate*1 Rubber*4 28 - Acer AL1706 | AL1706 Service Guide - Page 29
Front Bezel *1 Button *1 Indicator *1 Hinge Cover 29 - Acer AL1706 | AL1706 Service Guide - Page 30
the problem happen in the digital circuit part. If you check the H/V position, please use the crosshatch pattern. This LCM support 20 timing modes, if the input timing mode is out of specification, the picture appears abnormally. "Auto Color Balance"- Press ">" and " - Acer AL1706 | AL1706 Service Guide - Page 31
No power &LED off YES Check primary rectifier voltage NO NO Check circuit if short Check IC802, C805, T801 YES Check pin3 of IC802 voltage about 1V - Acer AL1706 | AL1706 Service Guide - Page 32
Output Voltage Unstable NG Check Vbe of 801 below 0.3V YES YES Check circuit if short YES Check Q801, Q802 NG Check ZD801, ZD802, ZD803, D803, D805 NG Check reference voltage YES YES Check pinR of IC801 YES Check R810, R811 NG Check R809, R814, IC801, R818 Check feedback circuit YES END NG - Acer AL1706 | AL1706 Service Guide - Page 33
NO Check the C pin voltage of IC803 if 3V YES Check R809, R808, R814, D809 NO Check D806, C815 if short NO Change R810, R811, R818 NO Change IC803 Change D806, C815 YES Check pin3 of IC802 voltage about 1V YES END NO Change R801, R805, R822, R823, R817 2.4 Backlight can't be turned on 33 - Acer AL1706 | AL1706 Service Guide - Page 34
LED Green? YES Backlight can not be turned on YES Is there 12Vdc voltage on pin13 of IC501? YES Is there high-level voltage on pin8 of IC501 YES Check CN501, CN502, CN503 and CN504? YES NO NO Is Ok fuse F501? NO NO Is R526 Ok? NO F501 open Check power supply YES - Acer AL1706 | AL1706 Service Guide - Page 35
3.Interface Board Troubleshooting 3.1 Black Screen and backlight turn on Black screen Check power NG supply:pin 1,2 of CN101 YES NG Check Check pin5 of CN101 NG Power fail Check FB108,R131,R132, R133 Check C150,D102,R137 Check X101,C154,C155 Inverter Fail Check R105,R106,R157, C114,Q103 35 - Acer AL1706 | AL1706 Service Guide - Page 36
3.2 White Screen White screen LVDS Cable Reinsert NG Change LVDSCable NG Check VLCD is 5V NG Check Panel-Enable of U105(pin2) is low OK Check Q101,Q102,Q107, R103 OK OK OK Check - Acer AL1706 | AL1706 Service Guide - Page 37
Check the communication of U104 andU105 NG Check ALE/RDZ/ WRZ/AD0/AD1/ AD2/AD3/ HWRESET OK Check the pins of U104 and U105 3.4 If brightness uniform, change Inverter or Panel. 3.5 If you find the vertical line on the screen, please change panel. 37 - Acer AL1706 | AL1706 Service Guide - Page 38
Exploded Diagram 38 - Acer AL1706 | AL1706 Service Guide - Page 39
Process To Access Factory Mode Power Off Press "AUTO＂& ＂MENU＂buttons at the same time Power On Release the "AUTO＂& ＂MENU＂ buttons Press "MENU＂ Button Press " - Acer AL1706 | AL1706 Service Guide - Page 40
ONNECTOR INFORMATION VGA Connector (D-Sub 15pin) Pin Assignments Chapter 5 Pin Symbol 1 Red 2 Green 3 Blue 4 N.C. 5 GND Pin Symbol 6 Red_GND 7 Green_GND 8 Blue_GND 9 PC+5V 10 N.C. Pin Symbol 11 N.C. 12 DDC_SDA 13 HSYNC 14 VSYNC 15 DDC_SCL 40 - Acer AL1706 | AL1706 Service Guide - Page 41
web or channel (http://aicsl.acer.com.tw/spl/). For whatever reasons a part number change is made, it will not be noted in the printed Service Guide. You MUST use the local FRU list provided by your regional Acer office ot order FRU parts for repair and service of customer machines. Note: To - Acer AL1706 | AL1706 Service Guide - Page 42
Zn FOIL,AL.,DOUBLE COND.,45x35x0.04mm, FOIL,AL.,DOUBLE COND.,45x35x0.04mm, LE17 LE17 main board PCBA,IF BOARD, LE1710-6A0 power + invertor board LCD PANEL 17" MT170EN01-V1-G3AM170000512 PCBA,PWR&INV./B, LE1710-6A0 LCD PANEL 17" MT170EN01-V1-G3AM170000512 Key pad PCBA,KEYPAD BOARD+ Bezel 42 - Acer AL1706 | AL1706 Service Guide - Page 43
SHEMATIC DIAGRAM Keypad Diagram Chapter 7 Interface Board Schematic 43 - Acer AL1706 | AL1706 Service Guide - Page 44
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POW/INV Board Schematic 50