Acer P203 P203W LCD Service Guide
Acer P203 Manual
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- Acer P203 | P203W LCD Service Guide - Page 1
-M1 Service Manual Table of Contents Important Safety Notice 01 01. Product Specification 02 02. OSD Menu 08 03. Exploded Diagram 10 04. Assembly and Disassembly Procedures 12 05. Troubleshooting 20 06. Schematics and Layouts 32 Appendix I : User's Manual Appendix II: Quick Setup Guide - Acer P203 | P203W LCD Service Guide - Page 2
Important Safety Notice ACER P203W 1 Go to cover page Product Anouncement: This product is certificated . The service providers recommended by vender should being aware of notices listed in this service manual in order to minimize the risk of personal injury when perform service procedures. - Acer P203 | P203W LCD Service Guide - Page 3
2 ACER P203W Go to cover page 1. Product Specification 1.1 SCOPE This document defines the design and performance requirements for an 20/22W inch diagonal , flat panel monitor .The display element shall be a WSXGA (1680x1050) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M - Acer P203 | P203W LCD Service Guide - Page 4
1. Product Specification (continued) ACER P203W 3 Go to cover page C o n n e c to r P in A ssig n m e n t D SU B P in 1 S ig n a l R e d -V id e o P 19 GND 10 RX1+ 20 NC Pin Signal 21 NC Input , Supported 3.3V monitor sync input to the driver is 1.6 mA .When logic 1 is - Acer P203 | P203W LCD Service Guide - Page 5
4 ACER P203W Go to cover page 1. Product Specification (continued) 1.3.2.6 Abnormal Signal Immunity The monitor shall not be damaged by improper Adjust OSD menu off time range from10~120 second. Back light of the LCD panel is cut when the signal is not input (AC line power consumption - Acer P203 | P203W LCD Service Guide - Page 6
Specification (continued) ACER P203W 5 Go to cover page 1.3.4.3 Mode Recognition Pull-in The monitor mode : The code should memorize 9 monitor shall include a controller capable of converting the analog RGB signal from a standard SXGA resolution monitor. The LCD panel interface shall support - Acer P203 | P203W LCD Service Guide - Page 7
shall be an WSXGA resolution,20/22W, TFT-LCD.This panel shall be approved for use in this monitor. 1.4.2 Panel Timings The controller included with the monitor shall translate all video timings from the CPU that meet the timing requirements listed in Panel specification into timings appropriate for - Acer P203 | P203W LCD Service Guide - Page 8
Specification (continued) ACER P203W size. W hen the unit lights, line(s) in the monitor (vertical) or major (horizontal) axis appear dim, but by Lite-On will be reviewed by Lite-On as they become LCD supplier's spec. Details refer to QA Inspection Spec. Average Diameter smaller of (L+W)/2 or L/20 - Acer P203 | P203W LCD Service Guide - Page 9
8 ACER P203W Go to cover page 2.1 MAIN OSD MENU Outline: 2 OSD Menu The description for control function: M a in M en u Ic o n Sub Menu Ic o n N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A N /A Sub Menu Ite m D e s c rip - Acer P203 | P203W LCD Service Guide - Page 10
2. OSD Manu (continued) ACER P203W 9 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 11
10 ACER P203W Go to cover page 3.1 Packing Exploded Diagram 3. Exploded Diagram - Acer P203 | P203W LCD Service Guide - Page 12
3.2 Product Exploded Diagram 3. Exploded Diagram (continued) ACER P203W 11 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 13
12 ACER P203W Go to cover page 4. Assembly and Disassembly stick an insulator on the specific position, take a power board and turn it over. Then, put it on the specific positions of bracket chassis base. Turn the monitor faced down and put it FFC cable to the connector of the LCD S7 panel. 4 1 - Acer P203 | P203W LCD Service Guide - Page 14
and Disassembly Procedures (continued) ACER P203W 13 Go to cover page S8 Connect FFC cable to LCD panel. There are two locks over here when plugging in should be noticed S10 Use a Phillips-head screwdriver screwed the No.1~4 screws on both side and assemble the LCD panel and bracket chassis - Acer P203 | P203W LCD Service Guide - Page 15
14 ACER P203W Go to cover page 4. Assembly and Disassembly Procedures (continued) units firmly attached. (No1~4 Screw Size=M4x10; Torque=11~13KGFxCM). S19 Take a LDPE+EPE bag to cover the LCD monitor. Take a PE bag to cover the stand base. 3 1 4 2 Assemble the hinge cover into both two - Acer P203 | P203W LCD Service Guide - Page 16
4. Assembly and Disassembly Procedures (continued) S21 Put accessories of stand, DVI cable, and user's manual ,power cable on specific positions as photo below. USER'S MANUAL ACER P203W 15 Go to cover page POWER CABLE DVI CABLE STAND D-SUB CABLE S22 Move previous assembled parts into the - Acer P203 | P203W LCD Service Guide - Page 17
16 ACER P203W Go to cover page 4. Assembly and Disassembly Procedures (continued) 4.2 protector card then turn over the LCD monitor (screen faced down), VISTA LABEL Take out all accessories including D-SUB cable S2 power cable, DVI cables, user's manual, and stand base and packing material - Acer P203 | P203W LCD Service Guide - Page 18
4. Assembly and Disassembly Procedures (continued) ACER P203W 17 Go to cover page Place cloth on the panel where you are working S8 on to protect the panel. Continuously, wedge your finger between - Acer P203 | P203W LCD Service Guide - Page 19
18 ACER P203W Go to cover page 4. Assembly and Disassembly Procedures (continued) S12 Use a Phillips-head screwdriver unscrewed the No.1~4 screws to disassemble the LCD panel and bracket chassis module. (No1~4 screw size=M3x6; Torque=3~4KGFxCM). S15 Disconnect the FFC cable to the connector - Acer P203 | P203W LCD Service Guide - Page 20
-head screwdriver unscrewed the No.1~4 screws to disassemble the power board. (No1 screw size=M4x8; No2~4 screw size=M3x6; Torque=9~10KGFxCM). 3 2 ACER P203W 19 Go to cover page 4 1 Disconnect the FFC, P301, and function key S19 cables to connectors of interface board. P802 P301 FFC P306 - Acer P203 | P203W LCD Service Guide - Page 21
20 ACER P203W Go to cover page 5. Troubleshooting 5.1 No.display of screen (Screen is black, color of LED is amber) Does OSM display when you push PROCEED normally. NG OK Input the sync signal of computer, or change the cable. Proceed "checking the resolution change IC movement" section. - Acer P203 | P203W LCD Service Guide - Page 22
5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, color of LED is blue) ACER P203W 21 Go to cover . OK NG Check if the LCD video signal cable is connected between the Interface Board and LCD module. NG OK Failure Point The LCD video signal cable is disconnected. - Acer P203 | P203W LCD Service Guide - Page 23
22 ACER P203W Go to cover page 5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, the P304 all LVDS signals. NG OK Failure Point 1) The LVDS cable broke between P304 and LCD module. 2) LCD module is failure. Check if the voltage on I305 pin 90 that is from 3.3V to - Acer P203 | P203W LCD Service Guide - Page 24
5.3 Checking the back light unit 5. Troubleshooting (continued) ACER P203W 23 Go to cover page Is +22V I305 pin86 is a PWM signal. NG OK Failure Point 1) Back light unit of LCD module is failure. 2) Inverter Cable is disconnected Failure Point 1) printed wire broke between P301 pin3, R301 - Acer P203 | P203W LCD Service Guide - Page 25
ACER P203W Go to cover page 5.4 Abnormal screen for VGA 5. Troubleshooting (continued) Check the R, G, B video signal from computer input on P302 of video connector. NG OK Check the R, G, B input video signals on I305 pin18, 20 P304. Process "Checking the resolution change IC movement" section. - Acer P203 | P203W LCD Service Guide - Page 26
5.5 Abnormal screen (For the DVI) 5. Troubleshooting (continued) ACER P203W 25 Go to cover page Check the DVI video signal from computer input on P303 of DVI-I from I305? NG OK Failure Point Printed wire broke between I305 and P304. Prpcess "Checking the resolution change IC movement" section. - Acer P203 | P203W LCD Service Guide - Page 27
26 ACER P203W Go to cover page 5.6 Abnormal OSM display adjust problem 5. Troubleshooting (continued) Check the input TTL level whether was changed when pressed function keys on the P306 pin 4, 5 (normal is high level, when push buttom, generated - Acer P203 | P203W LCD Service Guide - Page 28
5. Troubleshooting (continued) 5.7 Abnormal plug and play operation for VGA ACER P203W 27 Go to cover page Confirm the host computer supplies DDC2B mode. NG OK Check the voltage on P302 pin9 that is power DC 5 V. NG - Acer P203 | P203W LCD Service Guide - Page 29
28 ACER P203W Go to cover page 5. Troubleshooting (continued) 5.8 Abnormal plug and play operation (For the DVI) Confirm the host computer supplies DDC2 mode. NG OK Failure Point The host machine is not - Acer P203 | P203W LCD Service Guide - Page 30
5. Troubleshooting (continued) 5.9 Checking the interface circuit of sync signal 5.9.1 Checking the control circuit of horizontal sync pulse ACER P203W 29 Go to cover page Check the horizontal sync signal on P302 pin13 TTL level. NG OK Check the horizontal sync signal on I305 pin27 - Acer P203 | P203W LCD Service Guide - Page 31
30 ACER P203W Go to cover page 5. Troubleshooting (continued) 5.10 Checking the resolution change IC movement Check +3.3V supply on I305 pin8, pin14, pin16, pin24 , pin32, pin49, pin56, pin75, pin98 NG OK Proceed " Checking the DC/DC converter - Acer P203 | P203W LCD Service Guide - Page 32
5. Troubleshooting (continued) 5.11 Checking the DC/DC converter circuit ACER P203W 31 Go to cover page Check the 5V is output from P301 pin5, pin6. NG OK Check the 5V is input to I302 pin3. NG - Acer P203 | P203W LCD Service Guide - Page 33
6.1 ACER_LCD_P203W_SCHEMATICS_BLOCK DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 13 LCD Module AUO M220EW01-V2/V0 A Backlight M201EW02-V8/V9 A CPT CLAA201WA04A SEC LTM220M1-V0/ G DVI OPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER P203W 32 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 34
300K 0805 GND R822 300K 0805 C803 * C801 R820 300K 0805 GND C804 * 2 4 T801 ET-20 0.33U/275V 1 3 R802 SCK103 0.1U/275V C819 C820 2200P/250V-Y GND C825 GND-1 2200P/250V-Y 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832192700P01 A B C D E F G ACER P203W 33 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 35
LVB3M VLCD VCC3V3 B VLCD VCC3V3 C D LED_G LED_A E ADC1_IN ADC2_IN 6.PANEL & KEY INTERFACE AUDIO VDD AUDIO_EN VDD F VOLUME 7.AUDIO G 8 9 10 11 12 13 PCB No. 6832190100P01 ACER P203W 34 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 36
ADJ TAB 4 AIC1084_33PM VCC3V3 TP14 C314 100uF/16V VCC3V3 Hole1 Case_GND 8 7 6 5 Hole2 Case_GND 8 7 6 5 Hole3 Case_GND 8 7 6 5 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 Hole4 Case_GND 8 7 6 5 D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER P203W 35 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 37
4K7 TP47 2 Q302 MMBT3904 R329 2K4 TP51 TP48 DDC_WPn R331 4K7 VGA_DDC_CLK VGA_DDC_DAT HSYNC VSYNC DDC_WPn VGA_DDC_CLK VGA_DDC_DAT D E F G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER P203W 36 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 38
RX3RX3+ 9 10 11 12 13 5V GND HP 14 15 16 31 RX0RX0+ GND RX5- 17 18 19 20 RX5+ GND 21 22 RXC+ RXC- 23 24 32 RED GRN BLU HS GND C1 C2 C3 C4 C5 DDC_WPn DVI_DDC_CLK DVI_DDC_DAT 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 A B C D E F G ACER P203W 37 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 39
GND GND I305 VCTRL 81 VDDC VDDC VDDC VDDP VDDP VDDP VDDP AVDD_33 AVDD_33 23 22 20 19 21 RIN0P RIN0M GIN0P GIN0M SOGIN0 18 17 27 28 30 31 BIN0P BIN0M 1 A1 A2 GND 2 3 4 24C16 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 A B C D E F G ACER P203W 38 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 40
LVACKM LVACKP LVA3M LVA3P VLCD VLCD 12 13 P304 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CVILUX-CF25302D0R0 LED_Amber KEY_ADC2 KEY_ADC1 P306 1 2 3 4 5 6 JWT-A2001WV2-06 10 11 12 13 PCB No. 6832190100P01 D E F G ACER P203W 39 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 41
S605 D SW PUSHBUTTON POWER KEY S601 SW PUSHBUTTON E LEFT KEY S603 SW PUSHBUTTON F RIGHT KEY S602 G SW PUSHBUTTON 8 9 10 11 12 13 PCB No. 6832190200P01 ACER P203W 40 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 42
6.10 ACER_LCD_P203W_LAYOUTS_POWER BOARD 1 2 3 4 5 6 7 8 9 10 11 12 13 A POWER BOARD - TOP SILK POWER BOARD - BOTTOM SILK A B B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER P203W 41 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 43
6.11 ACER_LCD_P203W_LAYOUTS_INTERFACE BOARD 1 2 3 A 4 5 6 7 B 8 9 10 11 12 13 A B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER P203W 42 Go to cover page - Acer P203 | P203W LCD Service Guide - Page 44
6.12 ACER_LCD_P203W_LAYOUTS_FUNCTION KEY BOARD 1 2 3 A 4 5 6 7 B 8 9 10 11 12 13 A B C C D D E E F F G G 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. ACER P203W 43 Go to cover page