Acer Service Manual Service Manual LCD Monitor Acer P221W/P223W - 0 -...
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Copyright 2006 InnoLux Tech. Corp. Ltd All Rights Reserved This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of InnoLux Tech. Corp. Ltd. Acer P221W/P223W Service Manual...
Acer Service Manual Chapter 1- PRECAUTIONS & SAFETY NOTICES 1. SAFETY PRECAUTIONS This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user.
Acer Service Manual Chapter 3- CIRCUIT THEORY 1. Monitor Block Diagram The LCD Monitor contains an interface board, and inverter/power/Audio board, keypad board and flat panel. In Inverter/power/Audio board, power section supplies +14V & +5V for Inverter/Audio and Interface board used. The inverter section drives the backlight of panel and the DC-DC conversion. The Audio section drives speaker (2 x1W).
Acer Service Manual 3. Electronic Circuit Theory 3.1 Switching Mode Power Supply 3.1.1 AC Current Input Circuit P801 is a connector for connecting AC Power. F801 is a fuse to protect all the circuit. AC input voltage is from 90v to 264V. R820 and R821 joined between two inputting main circuit to prevent man from shock.
When press button “power”, U102(RTD2120) #1 sends out a low potential, via R106, flow to CN901#4 on keypad, LED amber on until “ACER” logo over,then U102(RTD2120) #1 sends out a high potential, LED amber off .and then U102(RTD2120) #48 sends out a low potential,LED green on.
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Acer Service Manual 4.1 Low voltage to high voltage circuit 14VDC provides the power for IC501; the control signals Brightness and ON/OFF come from I/F board. ON/OFF signal connect to pin8 of IC501 and makes IC501 enable. Brightness signal connect to pin7 of IC501 and regulates the panel brightness, R526, D515, R529, C505 make up a network of delaying time circuit and R523, R524 make up a divided voltage network, C504 is used to dump noise.
Acer Service Manual 2. Disassembly Block LE 2284 LCD Monitor HINGE *1 STAND-FRONT*1 STAND-REAR*1 ASSY, BASE SCREW,P,CROSS,T.T-4*12 *3 BASE*1 BASE,RELEASE,BUTTON,LE1983*1 RUBBER FOOT *5 PLATE,BASE*1 SCREW,F,CROSS,T4*6,Zn,ROHS*6 SCREW,F,CROSS,T4*10,Zn,ROHS*4 ASSY STAND SCREW,F,CROSS,M4*8,BLK- NL ROHS(NYLOK)*4 HINGE COVER_L*1 FRONT BEZEL *1 HINGE COVER_R*1 BUTTON *1...
C. When “e Color OSD” OSD displays, press [AUTO] to exit the OSD A. When OSD isn’t shown on screen, press [MENU] to enter OSD interface.The OSD interface uses “ACER eColor Management” and “User” to instead “Contrast” and “Brightness” separately.When press “ACER eColor Management” to show “e Color OSD”,and press “User”...
Acer Service Manual 1.5.2 Hot Key Operation HOT KEY OPERATION FUNCTION DESCRIPTION MENU POWE AUTO ◄ ► Press [AUTO] & [MENU] at the same time, and then press [POWER] for DC FACTORY ● ● power on. OSD menu will be shown MODE with “F”...
Acer Service Manual 3.2 Screen Picture Check 3.2.1 Test mode: 1680x1050 @ 60 Hz 3.2.2 Test pattern: pattern #1 of crosshatch (GENERAL-1) 3.2.3 Select OSD menu to execute ‘Auto’ function, screen picture shouldn’t appear abnormal phenomenon and picture on screen should fit in with active display screen.
Acer Service Manual under windows 98 operating system, or flicker-pattern of pixel on-off. It should be that no flicker be found on panel screen. 4.2 Panel Defect Inspection 4.2.1 Test mode: 1680x1050@60Hz 4.2.2 Test pattern: Crosshatch/Full white/Red/Green/Blue/Black/16 color bar/64 gray bars 4.2.3 Display quality must be (according to DIN 13406-2 pixel fault class II)
Acer Service Manual Majo Defect Type Specification Size Count (N) Minor Dot Shape(Particle Scratch Black spots which appear and Bubbles in Display area when B/L operating or on The Polarizer) ● 0.15mm ≤ D ≤ 0. 5 mm N ≤ 3 Line Shape L ≤...
Acer Service Manual 5.1.4 Set brightness and contrast to be maximum, apply pattern as Fig.3, it should be the following requirement: Min. luminance nine points (backlight ¡Ý 75 Max. luminance nine points (backlight Fig. 3 5.2 Color Temperature Check 5.2.1 Test mode: 1680x1050 @ 60 Hz 5.2.2 Test pattern: pattern #41 of “WHITE”...
Acer Service Manual Chapter 6- TROUBLE SHOOTING 1. No Power & LED Off No power &LED off Check primary Check IC802, Check circuit if short rectifier voltage C805, T801 Check F801, F802, P801, D801 Check R801, Check pin3 of IC802...
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Acer Service Manual 2. Unstable Power U n sta b le p o w e r C h e ck C h a n g e R 8 1 0 , C h e ck R 8 1 0 ,...
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Acer Service Manual 3. No raster N o ra s te r Y ES L E D G re e n ? Y ES B a c k lig h t c a n n o t b e tu rn e d o n...
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Acer Service Manual 4. Black screen Black screen Check power supply:pin 1,2 of Power fail CN102 Check Check power supply D101,D105,Q104 for U102 Check reset (pin4) of Check C105,R113 U102 Check crystal (pin 15,16) Check waveform of U102 X101,C108,C109 Check CCFL-...
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Acer Service Manual 5. Bad Screen Bad Screen L V DS Cable W orkmanship Reinsert Change L V DS L V DS Cable NG Cable Check Crystal: CheckX 101, C108, pin15,16 of U102 C109 Check the pins of U103...
Acer Service Manual 6. White screen White screen LVDS Cable Workmanship Reinsert Change LVDS cable NG LVDSCable Check VLCD Check LVDS Panel Fail is 5V signal Check Panel-Enable of U102 Fail U102(pin39) Check Q114,Q112,Q113,...