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17"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 Instruction.................................................6
3.1.General Instructions.................................................6
3.2.Control Button......................................................6
3.3.Adjusting the Picture..........................................7
4.Input/Output Specification.......................................10
4.1.Input Signal Connector.........................................10
4.2.Factory Preset Display Modes.........................11
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4.3.Panel Specification...............................................12
5.Block Diagram........................................................14
5.1.Software Flow Chart........................................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
5.2.Electrical Block Diagram...................................16
6.Schematic...........................................................18
6.1.Main Board........................................................18
6.2. Power Board.......................................................23
7.PCB Layout...........................................................26
7.1.Main Board.........................................................26
7.2.Power Board........................................................28
7.3 Key Board..........................................................30
8. Maintainability.......................................................31
8.1.Equipments and Tools Requirement......................31
8.2.Trouble Shooting.................................................32
9.White-Balance Luminance adjustment...............38
10.Monitor Exploded View.....................................40
11.BOM List............................................................41
SAFETY NOTICE
1
AOC WA17W
Horizontal Frequency
55.5 kHz - 70.6 kHz
Page
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Summary of Contents for AOC WA17W
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Page 1: Table Of Contents
17″LCD Color Monitor AOC WA17W Service Service Service Horizontal Frequency 55.5 kHz - 70.6 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……......…..1 5.2.Electrical Block Diagram………………..…....16 Revision List.…........……..2 6.Schematic…………………........…18 Important Safety Notice.……......……..3 6.1.Main Board............18 1.Monitor Specification......………..4 6.2. Power Board..…..….…........23 2.LCD Monitor Description……………………………..5... -
Page 2: Revision List
17″LCD Color Monitor AOC WA17W Revision List Revision Date Revision History TPV Model Mar.-14-2008 First Version Release T77HRTNCMWPUDN... -
Page 3: Important Safety Notice
AOC WA17W 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
17″LCD Color Monitor AOC WA17W 1. Monitor Specifications Items Descriptions Driving system TFT Color LCD Type HSD170MGW1-B00 Size 43.2cm (17") LCD Panel Pixel pitch 0.255mm( H )x 0.255mm( V ) Viewable angle 160˚ (H) 160˚ (V) (TYPE) Response time (type) -
Page 5: Lcd Monitor Description
17″LCD Color Monitor AOC WA17W 2. LCD Monitor Description The LCD MONITOR will contain a main board, a power 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: General Instructions
17″LCD Color Monitor AOC WA17W 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The 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: Adjusting The Picture
17″LCD Color Monitor AOC WA17W 3.3 Adjusting the Picture OSD Settings 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. If the function selected has a sub-menu, press < or > again to navigate through the sub-menu functions. - Page 8 17″LCD Color Monitor AOC WA17W Adjust picture Clock to reduce Vertical-Line Clock noise. Adjust Picture Phase to reduce Horizontal-Line Focus Image Setup noise H.Position Adjust the horizontal position of the picture. V.Position Adjust the vertical position of the picture. Warm Recall Warm Color Temperature from EEPROM.
- Page 9 17″LCD Color Monitor AOC WA17W Digital Select Digital Signal Source as Input Input Select Analog Select Analog Signal Source as Input Auto Config Auto adjust the picture to default Extra DDC/CI Turn ON/OFF DDC/CI Support Reset yes or no Reset the menu to default...
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Page 10: Input/Output Specification
17″LCD Color Monitor AOC WA17W 4. Input/output Specification 4.1 Input Signal Connector D-SUB connector Pin No. Description Pin No. Description Green Detect Cable Blue DDC-Serial Data Ground H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground DVI connector Pin No. Signal Name Pin No. -
Page 11: Factory Preset Display Modes
17″LCD Color Monitor AOC WA17W 4.2. Factory Preset Display Modes Horizontal Vertical Resolution Standard Frequency Frequency Dos-mode 720 × 400 31.47kHz 70Hz 640x480 31.469kHz 59.94 Hz 640x480 37.861 kHz 72.809 Hz 640x480 37.5 kHz 75 Hz 800x600 35.156 kHz 56.25 Hz 800x600 37.879 kHz... -
Page 12: Panel Specification
17″LCD Color Monitor AOC WA17W 4.3 Panel Specification HannStar Display model HSD170MGW1-B00 is a color active matrix thin film transistor (TFT) liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, a driving circuit and a back light system. - Page 13 17″LCD Color Monitor AOC WA17W Backlight Unit 4.3.4 Optical Characteristics Measuring Condition _ Measuring surrounding: dark room _ Lamp current IBL: 7.5±0.1mA, lamp freq. FL=50 KHz, Inverter: TDK TBD315NR-1 _ VDD=5.0V, fV=60Hz _ Ambient temperature: 25±2oC _ 30min. Warm-up time.
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Page 14: Block Diagram
17” LCD Color Monitor AOC WA17W 5. Block Diagram 5.1 Software Flow Chat... - Page 15 17” LCD Color Monitor AOC WA17W 1) MCU initialize. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.
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Page 16: Electrical Block Diagram
17” LCD Color Monitor AOC WA17W 5.2 Electrical Block Diagram 5.2.1 Main Board X401 LCD Interface Crystal CN601 24MHz CLKOUT U401 U501 Scalar IC RTD2525LH RTD2120L-LF (Include ADC, OSD) EPR_SDA H sync EPR_SCL Digital V sync Video Key Board Control... - Page 17 17” LCD Color Monitor AOC WA17W 5.2.2 Inverter/Power Board AC input Bridge Rectifier Transformer Rectifier diodes EMI filter and Filter Start Circuit: R904, R932, R933 CN902 Feedback Circuit Control IC ON/OFF Output MOSFET Circuit Transformer Lamp Over ON/OFF Feedback Voltage...
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Page 18: Schematic
17" LCD Color Monitor AOC WA17W 6. Schematic 6.1 Main Board... - Page 19 17" LCD Color Monitor AOC WA17W...
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Page 23: Power Board
17" LCD Color Monitor AOC WA17W 6.2 Power Board 1/4W R918 L904 R941 R945 1K 1/4W 1K 1/4W +12V 1/4W R919 1.1uH BD901 C912 KBP208G 0.001uF C922 ZD902 C930 1/4W R920 C917 C918 470uF25V R944 RLZ13B 67G215D4714KV R946 0.1uF... - Page 24 17" LCD Color Monitor AOC WA17W CN801 R821 C839 T801 1000pF POWER X'FMR R817 1K 1/10W 1% 10K 1/10W CONN R855 D805 33G8020 2E F 1/4W LL4148WP C819 070522 F801 0.0022uF +12V C801 15pF/3KV 0R05 1/4W R804 Q801 C802...
- Page 25 17" LCD Color Monitor AOC WA17W 0.47uF/16V 65G0603474 12 C104 100uF25V C102 C103 67G215Y 1014KT U101 56G 616 37 R104 CN102 10K 1/10W 5% 0.47uF/16V 61G0603103 C101 65G0603474 12 CN101 LOUT+ LIN+ LOUT+ C105 R105 LOUT- LIN- LOUT- 10K 1/10W 5%...
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Page 26: Maintainability
17" LCD Color Monitor AOC WA17W 8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with and Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual. -
Page 27: Trouble Shooting
17" LCD Color Monitor AOC WA17W 8.2 Trouble Shooting 8.2.1 Main Board No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240V is normal Reinsert or check the... - Page 28 17" LCD Color Monitor AOC WA17W No picture (LED orange) No picture The button if under control Measure U201 PIN2=3V, Q502(C) =1.8V Check U201, Q502 X401 oscillate waveform is normal Replace X401 Check HS/VS from CN301 is normal Check Correspondent...
- Page 29 17" LCD Color Monitor AOC WA17W White screen White screen Measure Q602 base X401 oscillate waveform is normal is low level? Replace X401 Check Q601, Q602 is Check reset circuit of broken or CN601 solder? U401 is normal Check Correspondent Check Correspondent component.
- Page 30 17" LCD Color Monitor AOC WA17W 8.2.2 Power/Inverter Board (1) No power Check CN902 pin4 = 5V Check AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Check bridge rectified circuit and F901 circuit...
- Page 31 17" LCD Color Monitor AOC WA17W 2.) W / LED, No Backlight Check F801= 12V Check adapter or MB Check ON/OFF signal Check Interface board Check IC801 pin12=5V Change ON/OFF Check IC801 PIN9/10 have the output of square wave at short...
- Page 32 17" LCD Color Monitor AOC WA17W 8.2.3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally?
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Page 33: White-Balance Luminance Adjustment
= 313 ±25, y = 329 ±25, Y= 180cd/m 3. Into Factory mode of WA17W: Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel. - Page 34 17" LCD Color Monitor AOC WA17W 2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 283 ±25, y = 297 ±25, Y=180cd/m 4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100 5.
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Page 35: Bom List
17" LCD Color Monitor AOC WA17W 11. BOM List T77HRTNCMWPUDN Location Part No. Description 040G 581 26704 SHIPPING LABEL 040G 58160811A GREEN DOT LABEL 041G 68508 A control card 044G600210A PAPER BOARD 044G9003220 CORNER PAPER 045G 77 3 PE PACKING... - Page 36 17" LCD Color Monitor AOC WA17W Q44G7069 1 Q44G7069 2 Q44G7069961 1A 17"LCD CARTON Q45G 88606 R PE BAG FOR BASE Q45G 88607 R pe bag for monitor Q52G6020 44 PROTECT FILM 045G 76 28 RN PE BAG FOR MANUAL...
- Page 37 17" LCD Color Monitor AOC WA17W U101 056G 616 37 IC TPA6021A4NE4 2W*2 PDIP-20 NR901 061G 58080 WT 8 OHM NCT R914 061G152M47852T RST MOFR 0.47 OHM +-5% 2WS C903 063G 10747410V 0.47UF 275VAC ARCO C938 065G 1K152 1T 1.5NF/1KV Z5F+-10%...
- Page 38 17" LCD Color Monitor AOC WA17W Q601 057G 763 1 A03401 SOT23 BY AOS(A1) R302 061G0402000 RST CHIPR 0 OHM +-5% 1/16W R429 061G0402000 RST CHIPR 0 OHM +-5% 1/16W R325 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R324 061G0402100...
- Page 39 17" LCD Color Monitor AOC WA17W R210 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R213 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R316 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R404 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R405 061G0402103...
- Page 40 17" LCD Color Monitor AOC WA17W C210 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C315 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C316 065G0402104 15 MLCC 0402 0.1UF K 16V X5R C317 065G0402104 15 MLCC 0402 0.1UF K 16V X5R...
- Page 41 17" LCD Color Monitor AOC WA17W D309 093G 6433S DIODE BAV99 SEMTECH D311 093G 6433S DIODE BAV99 SEMTECH D314 093G 6433S DIODE BAV99 SEMTECH D313 093G 39S 34 T UDZSNP5.6B ROHM D312 093G 39S 34 T UDZSNP5.6B ROHM D310 093G 39S 34 T UDZSNP5.6B ROHM...
- Page 42 17" LCD Color Monitor AOC WA17W R827 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R824 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R818 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W R814 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W...
- Page 43 17" LCD Color Monitor AOC WA17W JR902 061G1206000 RST CHIPR 0 OHM +-5% 1/4W JR901 061G1206000 RST CHIPR 0 OHM +-5% 1/4W JR801 061G1206000 RST CHIPR 0 OHM +-5% 1/4W F801 061G1206000 RST CHIPR 0 OHM +-5% 1/4W R910 061G1206100...
- Page 44 17" LCD Color Monitor AOC WA17W C928 065G0805103 32 CAP CHIP 0805 10NF K 50V X7R C930 065G0805104 32 CAP CHIP 0805 0.1uF K 50V X7R C924 065G0805104 32 CAP CHIP 0805 0.1uF K 50V X7R C916 065G0805104 32 CAP CHIP 0805 0.1uF K 50V X7R...
- Page 45 17" LCD Color Monitor AOC WA17W D901 093G 6038T52T FR103 715G2545 2 PWPC...