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18.5" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents...................................................1
Revision List..........................................................2
Important Safety Notice ................................................ 3
1. Monitor Specification..................................................4
2. LCD Monitor Description........................................5
3. Operation Instructions..................................................6
3.1. General Instructions..................................................6
3.2. Control Buttons..................................................6
3.3 Adjusting the Picture...................................................8
4. Input/ Output Specification.......................................10
4.1. Input Signal Connector........................................10
4.2. Factory Preset Display Modes................................10
4.3. Panel Specification............................................11
5. Block Diagram............................................................13
5.1 Main Board.....................................................13
5.2.Power Board....................................................14
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
TABLE OF CONTENTS
Page
Description
6. Schematic.............................................................15
6.1. Main Board.........................................................15
6.2. Power Board..............................................19
6.3. Key Board.................................................22
7. PCB Layout...........................................................23
7.1. Main Board.........................................................23
7.2. Power Board........................................................26
7.3. Key Board............................................................27
8. Maintainability........................................................28
8.1. Equipments and Tools Requirement.....................28
8.2. Trouble Shooting................................................29
9. White-Balance, Luminance Adjustment...............33
10. Monitor Exploded View..................................35
11. BOM List...............................................................37
SAFETY NOTICE
1
AOC WLA184TWE
Horizontal Frequency
30-60 kHz
Page
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Summary of Contents for AOC WLA184TWE
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Page 1: Table Of Contents
18.5" LCD Color Monitor AOC WLA184TWE Service Service Service Horizontal Frequency 30-60 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents…………………………………………...1 6. Schematic……………..........15 Revision List………………………………………………..2 6.1. Main Board..………..........15 Important Safety Notice ……......……..3 6.2. Power Board……………………………………..19 1. Monitor Specification......…………..4 6.3. -
Page 2: Revision List
18.5" LCD Color Monitor AOC WLA184TWE Revision List Version Release Date Revision History TPV Model Name June 26, 2012 Initial release T8VWSY6EX8WNAN... -
Page 3: Important Safety Notice
AOC WLA184TWE Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended. -
Page 4: Monitor Specification
18.5" LCD Color Monitor AOC WLA184TWE 1. Monitor Specification Driving system 18.5” TFT Color LCD, With LED Backlight LCD Panel Size 47.0cm Pixel pitch 0.3mm( H )x0.3mm( V ) Video R,G,B Analog Interface Input H-Frequency 30KHz – 60KHz V-Frequency 55-76Hz Display Colors 16.7M Colors... -
Page 5: Lcd Monitor Description
18.5" LCD Color Monitor AOC WLA184TWE 2. LCD Monitor Description The LCD Monitor will contain a main board, an adapter board and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage. -
Page 6: Operation Instructions
18.5" LCD Color Monitor AOC WLA184TWE 3. Operation Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. - Page 7 18.5" LCD Color Monitor AOC WLA184TWE - /ECO: Activates the ECO control when the OSD is OFF or adjust a function when function is activated. + / Volume: Activates the volume control when the OSD is off or adjust a function when function is activated.
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Page 8: Adjusting The Picture
18.5" LCD Color Monitor AOC WLA184TWE 3.3 Adjusting the Picture HOW TO ADJUST A SETTING 1. Press the MENU-button to activate the OSD window. 2. Press - or + to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate it. - Page 9 18.5" LCD Color Monitor AOC WLA184TWE Clock Adjust Picture Clock to reduce Vertical-Line noise Phase Adjust Picture Phase to reduce Horizontal-Line noise Image Setup H.Position Adjust the horizontal position of the picture V.Position Adjust the vertical position of the picture...
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Page 10: Input/ Output Specification
18.5" LCD Color Monitor AOC WLA184TWE 4. Input/ Output Specification 4.1 Input Signal Connector D-Sub 15pin Connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION VGA_R+ VGA_5V VGA_G+ VGA_B+ DSUB_SDA VGA_PLUG H-Sync VGA_R- V-Sync VGA_G- DSUB_SCL VGA_B- 4.2 Factory Preset Display Modes... -
Page 11: Panel Specification
18.5" LCD Color Monitor AOC WLA184TWE 4.3. Panel Specification TPM185B1-WX130 is a 18.5” TFT Liquid Crystal Display module with 2 CCFL Backlight unit and 30pin 1ch-LVDS interface. This module supports 1366 x 768 WXGA mode and can display up to 16.7M colors. - Page 12 18.5" LCD Color Monitor AOC WLA184TWE 4.3.4 ELECTRICAL CHARACTERISTICS Ta = 25 ± 2 ºC 4.3.5 BACKLIGHT UNIT Ta = 25 ± 2 ºC 4.3.6 BLOCK DIAGRAM...
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Page 13: Block Diagram
18.5" LCD Color Monitor AOC WLA184TWE 5. Block Diagram 5.1 Main board XGA/SXGA LVDS OUTPUT DSUB_R+ DSUB_R+ VCC1.8 DSUB_R- DSUB_R- DSUB_G+ DSUB_G+ VCC3.3 DSUB_G- DSUB_G- VCC1.8 DSUB_SOG DSUB_SOG DSUB_B+ DSUB_B+ DSUB_B- DSUB_B- VCC3.3 CMVCC1 DSUB_H DSUB_H DSUB_V DSUB_V DDC1_SDA DDC1_SDA... -
Page 14: Power Board
18.5" LCD Color Monitor AOC WLA184TWE 5.2 Power board 14.5V Diode rectifier & Filter Transformer AC input Bridge +5Vi Audio IC Rectifier Diode rectifier EMI filter (U601) and Filter & Filter Start Circuit: R908 CN902 Feedback Over Circuit Voltage Control IC... -
Page 15: Schematic
18.5" LCD Color Monitor AOC WLA184TWE 6. Schematic 6.1 Main Board 715G3959M010020H4K FB102 R104 C101 H_Sy nc R101 0R05 1/10W R102 100R 1/16W 5% VGA_B+ DSUB_H DSUB_B+ V_Sy nc R103 100R 1/16W 5% BEAD DSUB_V 100R 1/16W 5% 47nF 16V... - Page 16 SOGIN0 LVA2M U402 For ESD Protect DSUB_B+ BIN0P LVA1P DSUB_B- BIN0M LVA1M VCC1.8 DSUB_H HSY NC0 LVA0P 010A Befor AOC ID2007 OSD DSUB_V VSY NC0 LVA0M DDC1_SDA DDCA_SDA/RS232_TX VCC1.8 PA[4..9] DDC1_SCL DDCA_SCL/rs232_RX PA[4..9] {6} 020A For ID2008 ID2009 C406 C407...
- Page 17 18.5" LCD Color Monitor AOC WLA184TWE PANEL_VCC PA[0..1] CN403 PA[0..1] PA[4..9] PA[4..9] R477 R434 150 OHM 1/4W 150 OHM 1/4W C420 100N 16V PANEL_VCC CN405 PB[0..9] PB[0..9] AO3401L CONN NC/CONN R456 0R05 1/4W Chip 2006-11-7 Add pull up 4K7 to MVCC...
- Page 18 18.5" LCD Color Monitor AOC WLA184TWE NO NEED FOR TSUMU18TR_LF CMVCC CMVCC1 VCC3.3 VCC3.3 VCC3.3 {4,5,6} CMVCC R465 R437 R439 R480 NC/3.3 OHM 2W VCC1.8 10K1/16W 10K1/16W R479 CN404 NC/0R05 1/4W R467 0.05R VCC1.8 {5} CMVCC1 BKLT-EN Q406 Q410 CMVCC...
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Page 19: Power Board
18.5" LCD Color Monitor AOC WLA184TWE 6.2 Power Board 715G4497P010060H1S R929 100 OHM 1/4W BD901 C916 2.2N 630V F801 R930 100 OHM 1/4W 0R05 1/4W +14.5V R903 100 OHM 1/4W C928 2.2N 630V R904 ZD901 250OHM2W MTZJ T-72 22B KBP306G-05... - Page 20 18.5" LCD Color Monitor AOC WLA184TWE FB802 D801 L801 CN803 +14.5V C801 47UH BEAD Q801 R804 330uF 25V C814 SK310B 100N 50V 10 OHM 1/8W APM8005KCTRG C810 0.47UF 50V R801 R815 R819 R820 R821 R822 C809 100KOHM +-1% 1/8W CONN...
- Page 21 18.5" LCD Color Monitor AOC WLA184TWE +5V1 +5V1 R602 C604 470UF M 16V 10K 1/10W 5% R603 FB601 10K 1/10W 5% C609 1U 25V C617 10K 1/10W 5% 120 OHM 200PF 50V U601 FB603 R609 SE/BTL LOUTP CN601 120 OHM...
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Page 22: Key Board
18.5" LCD Color Monitor AOC WLA184TWE 6.3 Key Board 715G3584K010040H4K LED_2# LED_1# LED01 CN001 LBADC2 R002 2KOHM 1% 1/10W LBADC1 DC_POWERON R003 0R05 1/10W 1% LED_1# LED_2# R004 2KOHM 1% 1/10W CONN C003 C004 R005 100nF 50V 100nF 50V SGND... -
Page 23: Pcb Layout
18.5" LCD Color Monitor AOC WLA184TWE 7. PCB Layout 7.1 Main Board 715G3959M010020H4K... - Page 24 18.5" LCD Color Monitor AOC WLA184TWE...
- Page 25 18.5" LCD Color Monitor AOC WLA184TWE...
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Page 26: Power Board
18.5" LCD Color Monitor AOC WLA184TWE 7.2 Power Board 715G4497P010060H1S... -
Page 27: Key Board
18.5" LCD Color Monitor AOC WLA184TWE 7.3 Key Board 715G3584K010040H4K... -
Page 28: Maintainability
18.5" LCD Color Monitor AOC WLA184TWE 8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual. -
Page 29: Trouble Shooting
18.5" LCD Color Monitor AOC WLA184TWE 8.2 Trouble Shooting No Power No power Check power cable is Re-plug the power cable tightened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power... - Page 30 18.5" LCD Color Monitor AOC WLA184TWE 2. No Video (Power LED is Blue) No Video (Power LED is Blue) Press the power Replace the main board button is OK? Replace the power The end board and connection Replace the main...
- Page 31 18.5" LCD Color Monitor AOC WLA184TWE 3. DIM DIM (image overlap, focus or flicker) Reset in factory mode The end Set to the optimal The end frequency, select the recommended frequency Readjust the phase and pixel The end clock in the user mode...
- Page 32 18.5" LCD Color Monitor AOC WLA184TWE Color is not optimal Color is not optimal Color shift Miss color Reset the factory mode Replace the signal cable In the user mode, set the” color settings” until customer satisfy The end Pull out the signal cable...
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Page 33: White-Balance, Luminance Adjustment
= 313 ±30, y = 329 ±30, Y>150cd/m 3. Enter into Factory mode of AOC e1620Swb: Press the MENU button, pull out the power cord, and then plug the power cord. You will enter into factory mode. - Page 34 18.5" LCD Color Monitor AOC WLA184TWE B. Adjust Normal (7300K) color-temperature 1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 301 ±30, y = 317 ±30, Y>150cd/m 4.
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Page 35: Monitor Exploded View
18.5" LCD Color Monitor AOC WLA184TWE 9. Monitor Exploded View... - Page 36 18.5" LCD Color Monitor AOC WLA184TWE Item Part Number Description Q'ty BEZEL KEY FUNTION LENS_POWER KEY BOARD PANEL 0G1G1030 6120 SCREW 0G1G1030 6120 SCREW POWER BOARD MAIN BOARD SPEAKER MAIN_FRAME REAR COVER HINGE COVER_ STAND 0M1G1740 10 47 CR3 SCREW 4X10...
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Page 37: Bom List
18.5" LCD Color Monitor AOC WLA184TWE 11. BOM List Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to http://cs.tpv.com.cn/hello1.asp for the latest information. T8VWSY6EX8WNAN Location Part NO. Description Remark... - Page 38 A34G1407AED 1B0130 BASE Q34G7043AEDG8B0130 BEZEL Q34G7044AED RB0100 REAR_COVER Q34G7045AED 1B0100 STAND Q34G7046AED 1B0100 COVER_STAND Q40G000285603A FEATURE POP LABEL FOR WLA184TWE Q41G19M185604A WLA184TWE MANUAL Q44G8T3885602A ARTWORK CARTON WLA184TWE Q45G 88609203 EPE BAG Q52G1001211 B ZA AL FOIL ECN403 S95G801830SH8600HF HARNESS 30P-30P 100MM...
- Page 39 18.5" LCD Color Monitor AOC WLA184TWE C421 067G 3151014KB EC LOW ESR 100UF M 25V 6.3*11MM EG C410 067G 3051007PB EC 10UF 20% 50V 5*11 CD263 C426 067G 3051014CB EC 100UF 20% 25V KM 6.3*11 C427 067G 3051014CB EC 100UF 20% 25V KM 6.3*11...
- Page 40 18.5" LCD Color Monitor AOC WLA184TWE R410 061G0402101 JF RST CHIPR 100 OHM +-5% 1/16W FENGHUA R405 061G0402101 JF RST CHIPR 100 OHM +-5% 1/16W FENGHUA R102 061G0402101 JF RST CHIPR 100 OHM +-5% 1/16W FENGHUA R103 061G0402101 JF RST CHIPR 100 OHM +-5% 1/16W FENGHUA...
- Page 41 18.5" LCD Color Monitor AOC WLA184TWE R439 061G0402103 JY RST CHIPR 10KOHM +-5% 1/16W YAGEO R437 061G0402103 JY RST CHIPR 10KOHM +-5% 1/16W YAGEO R433 061G0402103 JY RST CHIPR 10KOHM +-5% 1/16W YAGEO R421 061G0402103 JY RST CHIPR 10KOHM +-5% 1/16W YAGEO...
- Page 42 18.5" LCD Color Monitor AOC WLA184TWE R440 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R485 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R438 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO R134 061G0402472 JY RST CHIPR 4.7KOHM +-5% 1/16W YAGEO...
- Page 43 18.5" LCD Color Monitor AOC WLA184TWE C415 065G040210412K CAP 0402 100NF 10% 16V X7R C416 065G040210412K CAP 0402 100NF 10% 16V X7R C417 065G040210412K CAP 0402 100NF 10% 16V X7R C419 065G040210412K CAP 0402 100NF 10% 16V X7R C420 065G040210412K...
- Page 44 18.5" LCD Color Monitor AOC WLA184TWE C108 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C104 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C104 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C108 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C111 065G040250931C CAP 0402 5PF 0.25PF 50V NP0...
- Page 45 18.5" LCD Color Monitor AOC WLA184TWE U902 056G 139 71HF IC EL817M(A)-G U601 056G 616 85 AUDIO APA2603JI-TUG 3W DIP-16 RST NTCR 8OHM +/20%/NMM01 4A NR901 061G 58809MEN XIANZHENG C908 063G107K474 6S HF CAP X2 0.47UF 10% 275V C903 065G306M1022BP...
- Page 46 18.5" LCD Color Monitor AOC WLA184TWE 0M1G 930 8120 SCREW 3X8 Q90G6084 3 HEAT SINK 709G4497 QM001 CONSUMPTIVE ASS'Y 055G 23524 WELDING FLUX WITHOUT PB Q55G 100625 TIN STICK_LOW ARGENTUM U901 056G 379529 AC/DC CONVERTER IC LD7576AGR SOP-7 U801 056G 700 11...
- Page 47 18.5" LCD Color Monitor AOC WLA184TWE R824 061G0805000 JT RST 0805 0.05R MAX 1/8W RJ801 061G0805000 JT RST 0805 0.05R MAX 1/8W R822 061G0805000 JT RST 0805 0.05R MAX 1/8W R821 061G0805000 JT RST 0805 0.05R MAX 1/8W R820 061G0805000 JT RST 0805 0.05R MAX 1/8W...
- Page 48 18.5" LCD Color Monitor AOC WLA184TWE R810 061G08052002FT RST CHIP 20K 1/8W 1% R920 061G0805202 JF RST CHIPR 2KOHM +-5% 1/8W FENGHUA R920 061G0805202 JT RST CHIP 2K 1/8W 5% TZAI YUAN R919 061G0805221 JF RST CHIPR 220 OHM +-5% 1/8W FENGHUA...
- Page 49 18.5" LCD Color Monitor AOC WLA184TWE R903 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN R909 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN R910 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN R912...
- Page 50 18.5" LCD Color Monitor AOC WLA184TWE C603 065G060347412K CAP 0603 470NF 10% 16V X7R C606 065G060347412K CAP 0603 470NF 10% 16V X7R C606 065G060347412K CAP CHIP 0.47UF 16V +/-10% X7R C603 065G060347412K CAP CHIP 0.47UF 16V +/-10% X7R C602 065G060347412K CAP CHIP 0.47UF 16V +/-10% X7R...
- Page 51 18.5" LCD Color Monitor AOC WLA184TWE C814 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R C613 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R C612 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R C612 065G080510432K CAP CHIP 0805 0.1UF K 50V X7R...
- Page 52 18.5" LCD Color Monitor AOC WLA184TWE C929 065G120622272K CER 1206 2N2 500V X7R 10% FB604 071G 56K121 HF CHIP BEAD 0805 120R 25% FB603 071G 56K121 HF CHIP BEAD 0805 120R 25% FB602 071G 56K121 HF CHIP BEAD 0805 120R 25%...
- Page 53 18.5" LCD Color Monitor AOC WLA184TWE FB801 071G 55 29 X BEAD 3.5X2.2X0.8 45R 25% 3BDR3522-453A F901 084G 56 4 B FUSE 4A 250V F902 084G 56 4 B FUSE 4A 250V F903 084G 56 4 B FUSE 4A 250V...
- Page 54 18.5" LCD Color Monitor AOC WLA184TWE 709G4497 QA001 CONSUMPTIVE ASS'Y 052G 1191 GLASS CLOTH 052G 1192 GLASS CLOTH E715 715G4497P010060H1S PWR PCB FR1 CTI>600 SS 122*184*1.6MM E715 715G4497P010060H1H PWR PCB FR1 CTI>600 SS 122*184*1.6MM 2nd source T901 S80GL22T3V3HF TRANSFORMER ASS'Y...