Service manual

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17" LCD Color Monitor AOC 177S

Service

Horizontal Frequency

30-80 kHz

TABLE OF CONTENTS

Description Page Description Page

SAFETY NOTICE

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.

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............……………............9

4.1.Input Signal Connector............…………….................9

4.2.Factory Preset Display Modes.........................9

4.3.Panel Specification.....…………...………..................10

5.Block Diagram…….…...................…………................12

5.1.Software Flow Chart…………………....….......12

5.2.Electrical Block Diagram…………..…..….......14

6.Schematic……………...............................….....16

6.1 Main Board……………..........................................16

6.2 Power Board....……..............................................21

7.PCB Layout..………….......................................23

7.1.Main Board………........................................23

7.2.Power Board….......................................26

7.3.Key Board…………………....................................28

8.Maintainability……….......................................29

8.1.Equipments and Tools Requirement......................29

8.2.Trouble Shooting…………..............................30

9.White-Balance, Luminance adjustment.................36

10.Monitor Exploded View……………………............37

11.BOM List….....................................................38

12.Different Parts List……………………………………50

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Summary of content (52 pages)

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7" LCD Color Monitor AOC 177S Service Service Service Horizontal Frequency 30-80 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents.......…….................……...........…........1 5.2.Electrical Block Diagram…………..…..….......14 Revision List.…........................………................……......2 6.Schematic……………...............................….....16 Important Safety Notice.………….…..................……......3 6.1 Main Board……………..........................................
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17" LCD Color Monitor AOC 177S Revision List Revision Date Revision History TPV Model A00 April-19-2007 First Version Release T76CM5NQF1ACF A01 May-18-2007 Add the audio function T76CM5DCF1A2A 2
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17" LCD Color Monitor Important Safety Notice AOC 177S 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.
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17" LCD Color Monitor 1. Monitor Specifications AOC 177S Items LCD Panel Input Description Driving system TFT Color LCD Type CLAA170EA07P Size 43.2cm (17.0") Pixel pitch 0.264mm (H) x 0.264mm (V) Viewable angle(CR≥10) 160°(H) 160°(V) Response time (type) 5 ms Display Color 16.2M Contrast Ratio 700:1 White Luminance 300cd/m2 Sync. Type H/V TTL Input Connector D-Sub 15pin Input Video Signal Analog:0.
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17" LCD Color Monitor 2. LCD Monitor Description AOC 177S The LCD monitor will contain a main board, 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. Monitor Block Diagram Flat Panel and CCFL Drive.
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17" LCD Color Monitor 3. Operating Instructions AOC 177S 3.1 General Instructions Press the power button to turn the monitor on or off. The control buttons are located in the front of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. - The power cord should be connected. - Connect the video cable from the monitor to the video card. - Press the power button to turn on the monitor, the power indicator will light up. 3.
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17" LCD Color Monitor AOC 177S 3.3 Adjusting the Picture Adjustment steps: 1. Press the MENU-button to activate the OSD window. 2. Press < or > to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or > to change the settings of the current function. 5. To exit and save, select the exit function, or leave the monitor alone for 10 seconds. If you want to adjust any other function, repeat steps 2-4.
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17" LCD Color Monitor AOC 177S User / Red Red Gain from Digital-register. User / Green Green Gain Digital-register. User / Blue Blue Gain from Digital-register. Yes N/A Input Select No OSD Setup N/A Auto Adjust the H/V Position, Focus and Clock of picture. Do not execute Auto Config, return to main menu. H. Position Adjust the horizontal position of the OSD. V. Position Adjust the vertical position of the OSD. OSD Timeout Adjust the OSD timeout.
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17" LCD Color Monitor 4. Input/Output Specification AOC 177S 4.1 Input Signal Connector Pin No. Description Pin No. Description 1. Red Video 9. +5V 2. Green Video 10. Detect Cable 3. Blue Video 11. TXD 4. RXD 12. DDC-Serial Data 5. Ground 13. H-Sync 6. Red Ground 14. V-Sync 7. Green Ground 15. DDC-Serial Clock 8. Blue Ground VGA connector layout 1 5 6 10 11 15 4.
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17" LCD Color Monitor AOC 177S 4.3 Panel Specification 4.3.1 Display Characteristics 4.3.
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17" LCD Color Monitor AOC 177S 4.3.
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17" LCD Color Monitor 5. Block Diagram AOC 177S 5.
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17" LCD Color Monitor AOC 177S 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. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Save the power key status into EPROM. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light.
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17" LCD Color Monitor AOC 177S 5.2 Electric Block Diagram 5.2.1 Main Board Crystal (14.
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17" LCD Color Monitor AOC 177S 5.2.
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17" LCD Color Monitor 6. Schematic AOC 177S 6.1 Main Board TSUM56AK XGA/SXGA B3 SCHEMATIC LVDS OUTPUT B4 +5V +5V RIN GNDR GIN GNDG SOG BIN GNDB HSY NC VSY NC DDCA_SDA DDCA_SCL DET_VGA RIN GNDR GIN GNDG SOG BIN GNDB HSY NC VSY NC DDCA_SDA DDCA_SCL DET_VGA DDC_WP R+ RG+ GB+ BCLK+ CLKDDCD_SDA DDCD_SCL DET_DVI DDC_WP R+ RG+ GB+ BCLK+ CLKDDCD_SDA DDCD_SCL DET_DVI VCC1.8 VCC3.3 +5V +12V VCC1.8 Vcc3.3 +5V +12V 3.INPUT B5 PA[0..7] PA[8..13] PA[14..19] PB[0..5] +12V PB[6..11] PC5V PB[12..
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" LCD Color Monitor AOC 177S 8 7 6 8 7 6 NC 5 4 5 4 9 TP 9 8 7 6 9 9 5 4 1 2 3 5 4 5 4 TP 51 5 4 C B R31 47 4K7 R32 0 X R29 X 1K R33 X 4.7K Q4 X MMBT3904 C32 N.C 1uF C705 R708 +5V C709 C710 + 0.1uF 100uF/25V 1 3 5 7 9 11 BL_ON BL_ADJ +12V GND +5V GND 2 4 6 8 10 12 100 R710 NC 10K C711 R712 0.1uF 4.7K 1/16W on_BACKLIGHT +5V R707 4.7K 1/16W PC5V +5V PC5V R732 D704(SSM12L) Vf=0.38V and If=1A. So when system power on, the system loading is about 400mA (3.
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AOC 177S CN405 14 R434 56 1/16W C432 0.047uF FB411 0 1/16W R435 56 1/16W C433 0.047uF FB412 0 1/16W R436 56 1/16W C434 0.047uF R437 470 1/16W C435 0.047uF R441 100 1/16W C436 0.047uF R442 100 1/16W C437 0.047uF R443 100 1/16W C438 0.
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17" LCD Color Monitor AOC 177S VDVI VMPLL VPLL AVDD VDDP VDDC VCC1.8 FB401 3 3 62 R486 61 + C418 10K 19 1/16W C421 22pF 1/16W NC X401 14.318MHz 12 97 117 68 CLKBP/LVBCKP/LCK_ODD CLKBN/LVBCKM/LDE NC/LVB2P/NC NC/LVB2M/NC BB1P/LVB1P/BB2 BB1N/LVB1M/BB3 BB2P/LVB0P/BB4 BB2N/LVB0M/BB5 BB3P/NC/BB6 BB3N/NC/BB7 RST R404 32 ESP OSP GPO0 GPO1 GPO2 GPO3 GPO4 GPO5 GPO6 XIN 33 XOUT C423 22pF GPIO_P22 GPIO_P23 GPIO_P03 VCC3.
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17" LCD Color Monitor AOC 177S 4 4 PA[0..7] 4 PA[0..7] PA2 PA3 PA4 PA5 PA6 PA7 4 PA[8..13] 4 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA12 PA13 RA1P RA1N RA2P RA2N RA3P RA3N PA[8..13] PA8 PA9 PA10 PA11 PA12 PA13 PA[14..19] PA14 PA15 PA16 PA17 PA18 PA19 LVACKP LVACKM LVA2P LVA2M LVA1P LVA1M LVA0P LVA0M LVA3P LVA3M 4 GA1P GA1N GA2P GA2N GA3P GA3N 4 4 GPO[0..4] PB[12..
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17" LCD Color Monitor AOC 177S 6.2 Power Board R951 47Ω 1/4W R952 47Ω 1/4W 0.001uF/500V C920 3 R909 100KΩ 2W 4 9 5 7 3 0.1uF C912 C916 0.1uF 10 22uF/50V C911 + 6 1 D901 UF4003PT 2 C902 1000pF 3 RT HV COMPNC CS VCC GNDOUT C901 1000pF L ZD920 PTZ9.1B L922 +5V C926 1000uF/16V + C932 470uF/16V + C927 470uF/16V 47Ω 1/4W R954 0.0033uF/250V C905 Q900 STP10NK70ZFP R915 10KΩ 1/8W R955 47Ω 1/4W CONNECTOR C900 0.0022UF 0.47uF C913 220pF R913 1KΩ 1/8W R916 0.
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17" LCD Color Monitor AOC 177S CN801 PT801 POWER X'FMR 7 6 2 1 3 4 +12V R802 300KΩ 1/4W R804 10KΩ 1/4W R805 470Ω 1/4W R818 15Ω 1/4W + R819 15Ω 1/4W C835 1KΩ 1/8W 0Ω 1/4W CONN C816 12pF/3KV 1 R836 8 CN802 2 1 C811 470uF/25V ON/OFF Q802 PMBS3904 R803 2 Q801 PMBS3904 C813 0.0015uF/50V 0.0015uF/50V R821 CONN ZD801 RLZ5.6B BAV99 R822 3MΩ 1/2W 2 R825 C836 560Ω 1/8W 0Ω 1/4W 3 C830 47pF R820 15KΩ 1/8W 1 C818 270pF 2 1 6 7 5 G S G S C831 270pF R827 3.
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17" LCD Color Monitor 7. PCB Layout AOC 177S 7.
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17" LCD Color Monitor AOC 177S 24
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17" LCD Color Monitor AOC 177S 25
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17" LCD Color Monitor AOC 177S 7.
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17" LCD Color Monitor AOC 177S 27
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17" LCD Color Monitor AOC 177S 7.
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17" LCD Color Monitor 8. Maintainability AOC 177S 8.1 Equipments and Tools Requirement 1. Voltmeter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with an IBM Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer. 7. Service Manual. 8. User Manual.
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17" LCD Color Monitor AOC 177S 8.2 Trouble Shooting 8.2.1 Main Board No power No power Press power key and look if the picture is normal NG Please reinsert and make sure the AC of 100-240 is normal NG OK Reinsert or check the Adapter/Inverter section Measure U702 PIN2, 4=3.3V Q702 Vc =1.
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17" LCD Color Monitor AOC 177S No picture (LED orange) No picture NG The button if under X401 oscillate control NG Replace X401 waveform is normal OK OK Check reset circuit of U401 is normal Measure U702 PIN2, 4=3.3V Q702 Vc =1.
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17" LCD Color Monitor AOC 177S White screen White screen Measure Q706 base NG is high level? OK OK Check Correspondent component. X401 oscillate waveform is normal NG Check Q706, Q704 is Check reset circuit of broken or CN101 solder? U401 is normal NG NG OK OK Replace U401 Replace PANEL 32 Replace X401 Check Correspondent component.
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17" LCD Color Monitor AOC 177S 8.2.
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17" LCD Color Monitor AOC 177S 2.
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17" LCD Color Monitor AOC 177S 8.2.
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17" LCD Color Monitor 9. White- Balance, Luminance Adjustment AOC 177S Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. 1. How to do the Chroma-7120 MEM. Channel setting A. Reference to chroma 7120 user guide B. Use “SC” key and “NEXT” key to modify x, y, Y value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust 2. Setting the color temp. you want A. MEM.CHANNEL 3 (7800 color): 7800 color temp.
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17" LCD Color Monitor 10.
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17" LCD Color Monitor 11. BOM List AOC 177S T76CM5NQF1ACF Location Part No.
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17" LCD Color Monitor AOC 177S Q45G 88606 R Q45G 88606 14 PE BAG FOR BASE R PE BAG FOR STAND Q45G 88609 89 EPE BAG FOR MONITOR Q52G6025 11999 MYLAR Q52G6025 13 1 MYLAR Q85G 740 1 2 SHIELD 040G 58162435A LABEL 041G780061513B INPUT NOT SUPPORT CARD 041G780061518B EASE PROGRAM 041G780061532C SA CENTER LIST 041G7800615A04 WARRANTY 045G 76 28 C PE BAG FOR MANUAL Q41G7006615A66 manual 012G6216 1 RUBBER 015G5786 1 VRSA BRACKET 037G 561 1 HINGE 0Q1G 130 6120 SCREW (T3X6) 0Q1G1040
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17" LCD Color Monitor AOC 177S SW003 077G 602 1 CJ TACT SWITCH SW002 077G 602 1 CJ TACT SWITCH SW001 077G 602 1 CJ TACT SWITCH SW005 077G 602 1 CJ TACT SWITCH SW004 077G 602 1 CJ TACT SWITCH DP001 081G 12 1 GP LED GP32032M/R003-ZY-33 CN801 033G8021 2E U WAFER CN802 033G8021 2E U WAFER CN803 033G8021 2E U WAFER CN804 033G8021 2E U WAFER CN801 033G8021 2E AC WAFER CN802 033G8021 2E AC WAFER CN803 033G8021 2E AC WAFER CN804 033G8021 2E AC WAFER 040G 45762420A LABEL
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17" LCD Color Monitor AOC 177S C907 067G215S10115H 100UF 450V 18*36 105 BY C907 067G215S10115K 100UF 450V C907 067G215S10115Q GP LOWESR EC 100UF 450V UPZ2W101M C926 067G215S102 3K ED1000UF 16V C811 067G215S4714KL LOW ESR EC 470UF 25V C820 067G215S4714KL LOW ESR EC 470UF 25V C925 067G215S4714KL LOW ESR EC 470UF 25V C922 067G215S6814KS EC 105℃ 680UF M 25V ED 10*20MM C923 067G215S6814KS EC 105℃ 680UF M 25V ED 10*20MM C924 067G215S6814KS EC 105℃ 680UF M 25V ED 10*20MM C926 067G2
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17" LCD Color Monitor AOC 177S 705G 909 11 06 R909 ASS'Y 705G D90 11 06 D900 ASS'Y 705GQ793014 D920 ASS'Y 705LQ7K1 34001 SHIELDING L902 S73G17465V TRANSFORMER ASS‘Y L902 S73G17465VW TRANSFORMER ASS‘Y L901 S73G17476V FILTER T901 S80GL17T33V TRANSFORMER ASS‘Y PT802 S80GL17T36V TRANSFORMER ASS‘Y PT801 S80GL17T36V TRANSFORMER ASS‘Y U401 056G 562100 TSUM16AK U702 056G 563 7 IC AIC1084-33PMTR-R AIC U406 056G 643 6 MAX810MTR SOT-23 U406 056G 643 20 IC RESET-4.
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17" LCD Color Monitor AOC 177S R442 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R443 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R445 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R453 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R454 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R704 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R446 061G0603102 RST CHIP 1K 1/10W 5% R447 061G0603102 RST CHIP 1K 1/10W 5% R476 061G0603102 RST CHIP 1K 1/10W 5% R477 061G0603102 RST CHIP 1K 1/10W 5% R701 061G0603102 RS
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17" LCD Color Monitor AOC 177S R422 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R423 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R450 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R451 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R705 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R707 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R712 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R725 061G0603472 RST CHIPR 4.
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17" LCD Color Monitor AOC 177S C419 065G0603104 32 CHIP 0.1UF 50V X7R C417 065G0603104 32 CHIP 0.1UF 50V X7R C416 065G0603104 32 CHIP 0.1UF 50V X7R C415 065G0603104 32 CHIP 0.1UF 50V X7R C407 065G0603104 32 CHIP 0.1UF 50V X7R C406 065G0603104 32 CHIP 0.1UF 50V X7R C405 065G0603104 32 CHIP 0.1UF 50V X7R C404 065G0603104 32 CHIP 0.1UF 50V X7R C401 065G0603104 32 CHIP 0.
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17" LCD Color Monitor AOC 177S D412 093G 39149 MLL5232B BY FULL POWER SMT D407 093G 64 42 P BAV70 SOT-23 D701 093G 6432P LL4148 D702 093G 6432P LL4148 D403 093G 6433P BAV99 D404 093G 6433P BAV99 D405 093G 6433P BAV99 D401 093G 39S 45 T DIODE ZENER RLZ36B ROHM D402 093G 39S 45 T DIODE ZENER RLZ36B ROHM D704 093G1004 4 SMAL140 715G1558 2 2 MAIN BOARD PCB C02 065G0603101 31 CER1 0603 NP0 50V 100P PM5 R C01 065G0603101 31 CER1 0603 NP0 50V 100P PM5 R FB104 071G 59B601 EA
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17" LCD Color Monitor AOC 177S Q85G0003 1 SHIELD IC901 056G 379 61 LD7575PS SOP-8 IC801 056G 608 10 IC OZ9938GN-B SOIC-16 Q801 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q802 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q803 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q805 057G 763 14 AM9945N Q806 057G 763 14 AM9945N R837 061G0805100 10 OHM 1/10W R842 061G0805100 10 OHM 1/10W R821 061G0805100 3F RST CHIPR 100KOHM +-1% 1/8W R831 061G0805100 3F RST CHIPR 100KOHM +-1% 1/8W R911 061G0805100 3F RS
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17" LCD Color Monitor AOC 177S R825 061G0805561 560 0805 R835 061G0805561 560 0805 R814 061G0805563 56KOHM 1/10W RJ902 061G1206000 0 OHM 1/8W RJ901 061G1206000 0 OHM 1/8W RJ801 061G1206000 0 OHM 1/8W F903 061G1206000 0 OHM 1/8W F902 061G1206000 0 OHM 1/8W C838 061G1206000 0 OHM 1/8W C837 061G1206000 0 OHM 1/8W C836 061G1206000 0 OHM 1/8W C835 061G1206000 0 OHM 1/8W R912 061G1206100 RST CHIP 10R 1/4W 5% R804 061G1206103 10 KOHM 1/8W R905 061G1206103 10 KOHM 1/8W
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17" LCD Color Monitor AOC 177S C916 065G0805104 32 CHIP 0.1U 50V X7R C912 065G0805104 32 CHIP 0.1U 50V X7R C806 065G0805105 22 CHIP 1UF 25V X7R 0805 C823 065G0805152 32 CHIP 1500PF 50V X7R 0805 C822 065G0805152 32 CHIP 1500PF 50V X7R 0805 C813 065G0805152 32 CHIP 1500PF 50V X7R 0805 C812 065G0805152 32 CHIP 1500PF 50V X7R 0805 C913 065G0805221 32 CHIP 220PF 50V X7R 0805 C819 065G0805223 22 CHIP 0.022UF 25V X7R 080 C804 065G0805225 12 CHIP 2.
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17" LCD Color Monitor AOC 177S CN901 006G 31500 EYELET Q900 006G 31502 1.5MM RIVET T901 006G 31502 1.5MM RIVET L901 006G 31502 1.5MM RIVET R916 006G 31502 1.5MM RIVET NR901 006G 31502 1.5MM RIVET PT802 006G 31502 1.5MM RIVET PT801 006G 31502 1.5MM RIVET L902 006G 31502 1.
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17" LCD Color Monitor AOC 177S 0Q1G1030 8128 CR3 SCREW Q33G4985 AS 1L KEY BUTTOM Q34G1840 GM 5B 30 REAR COVER(17") Q34G1842 GM 1B STAND TOP Q34G1843 GM 1B 20 STAND BUTTOM 750GLC70A7P13N PANEL LCD 17" EA07P 000 CPT AUPC780KK6AP AUDIO BOARD 033G802414C H 2*7PIN DUAL ROW RIGHT ANGLE H U201 056G 616 1 IC E-TDA7496L ST C207 067G215V471 3N GP KY16VB470M-CC3 10*12.5 C208 067G215V471 3N GP KY16VB470M-CC3 10*12.5 C201 067G215V471 3N GP KY16VB470M-CC3 10*12.
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17" LCD Color Monitor AOC 177S X401 093G 22 53 CRYSTAL 14.