Acer P223 P223W LCD Service Guide
Acer P223 Manual
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- Acer P223 | P223W LCD Service Guide - Page 1
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 Appendix III : Spare Parts Llist Safety Notice Any person attempting to service this chassis must familarize with the - Acer P223 | P223W LCD Service Guide - Page 2
Notice ACER P223W 1 Go to cover page Product Anouncement: This product is certificated to meet RoHS Directive and Lead-Free produced -RoHS parts. Service providers assume all liability. ! Using Lead-Free solder to well mounted the parts. ! The fusion point of Lead-Free solder requested in - Acer P223 | P223W LCD Service Guide - Page 3
ACER P223W 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 max. Full white pattern test mode following spec. Warm - Acer P223 | P223W LCD Service Guide - Page 4
1. Product Specification (continued) ACER P223W 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 NC Pin Signal 21 NC 22 GND 23 RXC+ 24 RXC , Supported 3.3V monitor sync input to the driver is 1.6 mA .When logic 1 is - Acer P223 | P223W LCD Service Guide - Page 5
4 ACER P223W Go to cover page 1. Product Specification (continued) 1.3.2.6 Abnormal Signal Immunity The monitor shall not be damaged by improper POWER-SAVE INFORMATION 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 - Acer P223 | P223W LCD Service Guide - Page 6
Product Specification (continued) ACER P223W 5 Go to cover page 1.3.4.3 Mode Recognition Pull-in The monitor shall recognize preset modes within a range of +/-1KHz whichever is less for horizontal ; and within +/-1Hz for vertical. 1.3.4.4 User Display Modes In addition to the factory pre-set - Acer P223 | P223W LCD Service Guide - Page 7
6 ACER P223W Go to cover page 1. Product Specification (continued) 1.3.8 Display Communications Channel The monitor assembly shall provide a display communications channel that conforms to VESA DDC2Bi hardware requirements. This configuration shall contain the 128-byte EDID file as specified by - Acer P223 | P223W LCD Service Guide - Page 8
Specification (continued) ACER P223W 7 Go to cover (white) with the display and might vary in size. W hen the unit lights, line(s) in the monitor ( by Lite-On will be reviewed by Lite-On as they become Depends on the LCD supplier's spec. Details refer to QA Inspection Spec. Average Diameter - Acer P223 | P223W LCD Service Guide - Page 9
8 ACER P223W 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 tio n A d ju s tm e n t R - Acer P223 | P223W LCD Service Guide - Page 10
2. OSD Manu (continued) ACER P223W 9 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 11
10 ACER P223W Go to cover page 3.1 Packing Exploded Diagram 3. Exploded Diagram - Acer P223 | P223W LCD Service Guide - Page 12
3.2 Product Exploded Diagram 3. Exploded Diagram (continued) ACER P223W 11 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 13
12 ACER P223W Go to cover page 4. Assembly and Disassembly Procedures 4.1 Assembly procedures 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 connector of the LCD S7 panel. 4 1 - Acer P223 | P223W LCD Service Guide - Page 14
4. Assembly and Disassembly Procedures (continued) ACER P223W 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 - Acer P223 | P223W LCD Service Guide - Page 15
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 sides S16 S20 Take two cushion foams; one is held the front side of LCD monitor, and another is held the back side. Stick a screen card on the front bezel with - Acer P223 | P223W 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 P223W 15 Go to cover page POWER CABLE DVI CABLE STAND D-SUB CABLE S22 Move previous assembled parts into the - Acer P223 | P223W LCD Service Guide - Page 17
USER'S MANUAL Disassemble the stand cover. S5 POWER CABLE DVI CABLE STAND D-SUB CABLE Take off two cushion foams S3 Use a Phillips-head screwdriver unscrew 4 screws S6 to release the stand base. (No1~4 Screw Size=M4x10; Torque=11~13KGFxCM). 3 1 4 2 Turn over the LCD monitor (screen faced - Acer P223 | P223W LCD Service Guide - Page 18
4. Assembly and Disassembly Procedures (continued) ACER P223W 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 the front bezel and - Acer P223 | P223W LCD Service Guide - Page 19
18 ACER P223W 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 P223 | P223W LCD Service Guide - Page 20
Procedures (continued) S18 Use a Phillips-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 P223W 19 Go to cover page 4 1 Disconnect the FFC, P301, and function key S19 cables to connectors - Acer P223 | P223W LCD Service Guide - Page 21
20 ACER P223W 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 buttom. No When OK Input the sync signal of computer, or change the cable. Proceed "checking the resolution change IC movement" section. - Acer P223 | P223W LCD Service Guide - Page 22
5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, color of LED is blue) ACER P223W 21 Go to cover page Is backlight lit? NG OK Is backlight lit? NG OK Refer "Checking the backlight unit" section" Check the video cable for failure. Check the host for output signal is - Acer P223 | P223W LCD Service Guide - Page 23
22 ACER P223W Go to cover page 5. Troubleshooting (continued) 5.2 Nothing display on screen (screen is black, color of LED is 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 - Acer P223 | P223W LCD Service Guide - Page 24
5.3 Checking the back light unit 5. Troubleshooting (continued) ACER P223W 23 Go to cover page Is +22V supplied to P301 pin3 from 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 - Acer P223 | P223W LCD Service Guide - Page 25
24 ACER P223W 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 open. Failure Point Printed wire broke between I305 and P304. Process "Checking the resolution change IC movement" section. - Acer P223 | P223W LCD Service Guide - Page 26
5.5 Abnormal screen (For the DVI) 5. Troubleshooting (continued) ACER P223W 25 Go to cover page Check the DVI video signal from computer input on P303 of DVI-I video NG OK Failure Point Printed wire broke between I305 and P304. Prpcess "Checking the resolution change IC movement" section. - Acer P223 | P223W LCD Service Guide - Page 27
26 ACER P223W 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 P223 | P223W LCD Service Guide - Page 28
5. Troubleshooting (continued) 5.7 Abnormal plug and play operation for VGA ACER P223W 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 OK Failure Point The - Acer P223 | P223W LCD Service Guide - Page 29
28 ACER P223W 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 P223 | P223W 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 P223W 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 TTL level. NG - Acer P223 | P223W LCD Service Guide - Page 31
30 ACER P223W 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 P223 | P223W LCD Service Guide - Page 32
5. Troubleshooting (continued) 5.11 Checking the DC/DC converter circuit ACER P223W 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 OK Check the 3.3V - Acer P223 | P223W LCD Service Guide - Page 33
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/L01 B Power & Invertor Input G G DVI OPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832190100P01 ACER P223W 32 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 34
1% R122 13K 1% C120 470P X7R GND 1 2 D114 1N4148 21 21 1 1 P101 2P 22 1 1 P102 2P 22 C113 0.1UF GND D103 1N4148 GND 1 1 P103 2P 22 1 1 P104 2P 22 C114 0.1UF GND D115 1N4148 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 PCB No. 6832192600P01 A B C D E F G ACER P223W 33 Go to cover page - Acer P223 | P223W 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 P223W 34 Go to cover page - Acer P223 | P223W 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 P223W 35 Go to cover page - Acer P223 | P223W 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 P223W 36 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 38
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 28 DVI-D 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 P223W 37 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 39
GND 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 A0 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 P223W 38 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 40
LVA1P LVA2M LVA2P 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 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 P223W 39 Go to cover page - Acer P223 | P223W 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. 6832192500P01 ACER P223W 40 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 42
6.10 ACER_LCD_P223W_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 P223W 41 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 43
6.11 ACER_LCD_P223W_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 P223W 42 Go to cover page - Acer P223 | P223W LCD Service Guide - Page 44
6.12 ACER_LCD_P223W_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 P223W 43 Go to cover page