AOC 177S Service Manual

AOC 177S Service Manual

17” lcd color monitor
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17" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Important Safety Notice...............................................2
Revision List.................................................................3
1.Product Feature............................................................4
2.LCD Monitor Description...........................................5
3.Operation Instruction..................................................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 Power Supply Requirement..................................11
4.4 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........................................................28
6.3 Key Board........................................................30
7. PCB Layout..........................................................31
7.1 Main Board.........................................................31
7.2 Power Board........................................................32
7.3 Key Board...........................................................35
8.Maintainability.......................................................36
8.1 Equipments and Tools Requirement......................36
8.2 Trouble Shooting..................................................36
10.Monitor Exploded View..........................................41
11.BOM List................................................................42
12.Different Parts List....................................................60
SAFETY NOTICE
1
AOC 177S
Horizontal Frequency
30KHz-83KHz
Page

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Summary of Contents for AOC 177S

  • Page 1: Table Of Contents

    17” LCD Color Monitor AOC 177S Service Service Service Horizontal Frequency 30KHz-83KHz TABLE OF CONTENTS Description Page Description Page 5.2 Electrical Block Diagram…………..…..…..16 Table Of Contents..……....……...…..1 6.Schematic……………........…..18 Important Safety Notice.………….…....……..2 6.1 Main Board..............18 Revision List.…......………....……..3 1.Product Feature...........………..4 6.2 Power Board..…………..……......28 2.LCD Monitor Description……………...………………..5...
  • Page 2: Important Safety Notice

    AOC 177S 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 3: Revision List

    17” LCD Color Monitor AOC 177S Revision List Version Date Revision History TPV Model Name T76CNMNKF1ACNIP Sep-25-06 Initial Release T76CNNMMF1UNNIP Jan-23-07 Add the BOM for PWB...
  • Page 4: Product Feature

    17” LCD Color Monitor AOC 177S 1. Monitor Specifications Items Description Driving system TFT Color LCD Size 43.2cm (17.0") Pixel pitch 0.264mm (H) x 0.264mm (V) Viewable angle 150(H) 130(V) (CR≥10) (type) LCD Panel Response time (type) 8 ms Display Color 16.2M...
  • Page 5: Lcd Monitor Description

    17” LCD Color Monitor AOC 177S 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 Inverter board will drive the backlight of panel and DC-DC conversion.
  • Page 6: Operation Instruction

    17” LCD Color Monitor AOC 177S 3. Operating 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 17” LCD Color Monitor AOC 177S FRONT PANEL CONTROL • Power Button & Indicator: Press this button to turn the monitor ON or OFF. Green — Power On mode. Orange — Off mode. • MENU / ENTER: Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status.
  • Page 8: Adjusting The Picture

    17” LCD Color Monitor AOC 177S 3.3 Adjusting the Picture 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 9 17” LCD Color Monitor AOC 177S 100) will not be User / Red Red Gain from Digital-register. 0-100 Modified by Reset function. User /Green Green Gain from Digital-register. 0-100 User / Blue Blue Gain from Digital-register. 0-100 Auto Adjust the H/V Position, Focus Auto Config and Clock of picture.
  • Page 10: Input/Output Specification

    17” LCD Color Monitor AOC 177S 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description Green Detect Cable Blue N.C. N.C. DDC-Serial Data H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground VGA connector layout 4.2 Factory Preset Display Modes...
  • Page 11: Power Supply Requirement

    17” LCD Color Monitor AOC 177S 4.3 Power Supply Requirement A/C Line voltage range 100 V ~ 240 V 50 ± 3Hz, 60 ± 3Hz A/C Line frequency range Peak surge current < 55A peak at 240 VAC and cold starting Leakage current <...
  • Page 12: Panel Specification

    17” LCD Color Monitor AOC 177S 4.4 Panel Specification 4.4.1 General Features 4.4.2 Optical Characteristics...
  • Page 13 17” LCD Color Monitor AOC 177S 4.4.3 Electrical Characteristics...
  • Page 14: Block Diagram

    17” LCD Color Monitor AOC 177S 5. Block Diagram 5.1Software Flow Chart...
  • Page 15 17” LCD Color Monitor AOC 177S REMARK: 1) MCU initializes. 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.
  • Page 16: Electrical Block Diagram

    17” LCD Color Monitor AOC 177S 5.2 Electrical Block Diagram 5.2.1 Main Board Adapter 5V Backlight DC/DC AIC108 RT9164 Data driver 12MH Gray levels NEVETEK Buffer DC/DC Converter 24C16 24C02 Vcom Backlight Adapter 12V Inverter...
  • Page 17 17” LCD Color Monitor AOC 177S 5.2.2 Power Board Bridge Rectifier AC input Transformer Rectifier diodes EMI filte r and Filter Start Circuit: R903 CN902 Feedback Over Voltage Control IC Circuit Protect ON/OFF Output MOSFET Transformer Q802、Q803 Circuit Lamp Feedback...
  • Page 18: Schematic

    17” LCD Color Monitor AOC 177S 6. Schematic 6.1 Main Board B_D17 B_D16 B_D15 B_D14 B_D13 B_D12 B_D11 1.8V 3.3V B_D10 B_D9 B_D8 B_D7 B_D6 B_D5 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF B_D4 (NC)3PIN/2.0mm B_D3 B_D2 B_D1 B_D0 B_D19...
  • Page 19 17” LCD Color Monitor AOC 177S BK_EN 100-->15K 3.3V BL_EN PWR_LEDB BK_PWM BL_BRIGHT PWR_LEDO VOUT AIC1084-33PM KEY 1 0.1uF KEY 2 MUTE STBY 100uF/16V 0.1uF VOLUME VOLUME CONN 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 1.8V RT9164A18PG 0.1uF 100uF/16V 3K 1/16W VCOM 0.1uF...
  • Page 20 17” LCD Color Monitor AOC 177S 0.22uF BAV99 DDC_SCL DDC_SCL 100 1/16W-->0 ohm B_IN+ DDC_SDA DDC_SDA 30 OHM BEAD-->0 ohm C146   1/16W UDZS5.6B UDZS5.6B DB_B-   1/16W B_IN- DDC_VDD   1/16W VGA_CONN VGA_DET DB_R- DB_R+ DB_G- 0.22uF DB_G+ UDZS5.6B...
  • Page 21 17” LCD Color Monitor AOC 177S BAT54SW C1608X7R1H104K PMBS3906 0 ohm 0 ohm VDDG (24V +- 1.0V) RN5VD25AA-TR-FA 100k C1608X7R1H104K 100k C1608X7R1H104K XDON XDON 100k 0 ohm VDDD LY 3518-4R7M ASKS10-04T (12V +-0.3V) VDDDS MMC2301 PANEL_VDD VDDA 0 ohm 47uF/16V...
  • Page 22 17” LCD Color Monitor AOC 177S IC5H VGMA14 R112 AAT7205 1 ohm IC5D VGMA7 TP10 VGMA13 AAT7205 R118 TP11 IC5G VGMA6 TP12 VGMA12 R125 AAT7205 VDDA0 IC5C TP13 TP14 VGMA5 VGMA11 IC5J AAT7205 R128 C100 TP15 VGMA4 IC5F TP16 VGMA10...
  • Page 23 17” LCD Color Monitor AOC 177S TP24 TP25 TP26 TP27 TP28 TP29 TP30 TP31 TP32 TP33 TP34 TP35 TP36 TP37 TP38 TP39 TP40 TP41 TP22 TP23 R149 R150 R151 R152 R153 R154 R155 R156 R157 R158 100 ohm 1% 100 ohm 1%...
  • Page 24 17” LCD Color Monitor AOC 177S F_D[0..19] VGMA[1..14] STH2-3 VDDDS VDDA VCOM DUMMY DUMMY DUMMY DUMMY VCOM VCOM VCOM VCOM VCOM VCOM XDON XDON VCOM VCOM VCOM VCOM VCOM VCOM STH2-3 STH3-4 DIO1 DIO1 F_D0 F_D0 D00N D00N F_D1 F_D1...
  • Page 25 17” LCD Color Monitor AOC 177S B_D[0..19] TP50 STH_B F_D[0..19] VGMA[1..14] STH_B STH4-5 VDDDS VDDA VCOM DUMMY DUMMY DUMMY DUMMY VCOM VCOM VCOM VCOM VCOM VCOM XDON XDON VCOM VCOM VCOM VCOM VCOM VCOM STH4-5 STH_B DIO1 DIO1 F_D0 B_D0...
  • Page 26 17” LCD Color Monitor AOC 177S B_D[0..19] VGMA[1..14] STH6-7 VDDDS VDDA VCOM DUMMY DUMMY DUMMY DUMMY VCOM VCOM VCOM VCOM VCOM VCOM XDON XDON VCOM VCOM VCOM VCOM VCOM VCOM STH6-7 STH7-8 DIO1 DIO1 B_D0 B_D0 D00N D00N B_D1 B_D1...
  • Page 27 17” LCD Color Monitor AOC 177S TP51 TP52 TP53 TP54 TP55 TP56 TP57 TP58 TP59 TP60 TP61 TP62 TP63 TP64 TP65 TP66 TP67 TP68 TP69 TP70 R163 R164 R165 R166 R167 R168 R169 R170 R171 R172 100 ohm 1% 100 ohm 1%...
  • Page 28: Power Board

    17” LCD Color Monitor AOC 177S 6.2 Power Board R913 C914 1/2W 0.001uF/500V   T901 POWER X'FMR C905 L903 1000uF/16V BD901 R924 +12V 2KBP06M C902 100KΩ 2W C907 0.0015uF/2KV C904 C906 120uF 400V 470uF/16V D901 1000uF/16V C924 C916 0.1uF/25V D902...
  • Page 29 17” LCD Color Monitor AOC 177S CN801 F801 +12V Q802 R802 0Ω 1/4W R804 1.5KΩ 1/8W Q801 C801 5pF/3KV   1/10W R806 PMBS3904   1/10W CONN 470Ω 1/4W R803 R801 Q808 VCC_I Q902 R835 PT801 100K 1/10W   AM4502C-T1-PF DTA144WN3/S 1.5KΩ...
  • Page 30: Key Board

    SPKR_R+ POWER_KEY KEY _RIGHT VCC3.3 SPKR_R- LED_O LED_O LED_G LED_G SW001 SW002 SW003 SW004 SW005 CONN DP001 LED101 AOC (Top Victory) Electronics Co., Ltd. Title KEY PAD (715G1782-* For F-Series) Size Document Number Date: Friday , February 17, 2006 Sheet...
  • Page 31: Pcb Layout

    17” LCD Color Monitor AOC 177S 7. PCB Layout 7.1 Main Board page 5 of 30...
  • Page 32: Power Board

    17” LCD Color Monitor AOC 177S 7.2 Power Board...
  • Page 33 17” LCD Color Monitor AOC 177S...
  • Page 34 17” LCD Color Monitor AOC 177S...
  • Page 35: Key Board

    17” LCD Color Monitor AOC 177S 7.3 Key Board...
  • Page 36: Maintainability

    17” LCD Color Monitor AOC 177S 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. 8.2 Trouble Shooting 8.2.1 Main Board No Power (No LED indicator)
  • Page 37 17” LCD Color Monitor AOC 177S No picture(LED orange) Change U2 The button under control Check reset signal of U2、pin17 Change defective Check waveforms of U2、pin50 and pin51 Check Y1、C29 supply voltage component Check U2 supply voltage Change defective component Check if under saving mode Check VGA、HS、VS signal...
  • Page 38 17” LCD Color Monitor AOC 177S White screen Change U2 Check PWR_EN is high voltage Check L1 supply voltage Change Q3、L1 Change C81 Check C81 Pin 6 oscillate is normal Check output of Pin4 from IC3 Check pin1、pin2 is high voltage...
  • Page 39 17” LCD Color Monitor AOC 177S Miss color Check the missing color, the input Check signal connector if OK Check signal source signal of which is normal Change signal connector connecter Check U2、pin77、pin82、pin84, check U2 R、G、B if OK B fail...
  • Page 40: White-Balance, Luminance Adjustment

    17” LCD Color Monitor AOC 177S 9. White- Balance, Luminance Adjustment 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.
  • Page 41: Monitor Exploded View

    17” LCD Color Monitor AOC 177S 10. Monitor Exploded View...
  • Page 42: Bom List

    17” LCD Color Monitor AOC 177S 11. BOM List T76CNMNKF1ACNIP Location Part No. Description 015G8266 1 AC BKT 026G 800504 6 BARCODE LABEL 040G 58162461A EPA LABEL 044G3798 1 EPS(L) 044G3798 2 EPS(R) 045G 88606 PE BAG FOR BASE 045G 88607...
  • Page 43 17” LCD Color Monitor AOC 177S 041G780061532C SA CENTER LIST 041G780061541A AOC-Kensington Card 041G7800615A04 WARRANTY 045G 76 28 C PE BAG FOR MANUAL Q33G4987 GM 1L CABLE CLAMP Q41G7006615A51 manual 012G6216 1 RUBBER 015G5786 1 VRSA BRACKET 015G8314 1 HINGE BRACKET...
  • Page 44 17” LCD Color Monitor AOC 177S NR901 061G 58080 WT 8 OHM NCT R924 061G152M104 64 100KOHM 5% 2W R912 061G152M278 64 0.27 OHM 5% 2W C908 063G107K474 HS X2 CAP 0.47UF K 275VAC C805 065G 3J1006ET 10PF,J,3KV,SL C809 065G 3J1006ET...
  • Page 45 17” LCD Color Monitor AOC 177S 705G 780 57 54 Q901 ASS'Y 705G 780 93 16 D901 ASS'Y PW1741CE2SMTP POWER BOARD R011 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R009 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W C005 065G0603104 12...
  • Page 46 17” LCD Color Monitor AOC 177S R922 061G0805000 0 OHM 1/10W R921 061G0805000 0 OHM 1/10W R906 061G0805100 10 OHM 1/10W R909 061G0805100 1F RST CHIPR 1KOHM +-1% 1/8W R804 061G0805102 CHIP 1KOHM 1/10W R918 061G0805102 CHIP 1KOHM 1/10W R919...
  • Page 47 17” LCD Color Monitor AOC 177S RJ801 061G1206000 0 OHM 1/8W RJ802 061G1206000 0 OHM 1/8W RJ803 061G1206000 0 OHM 1/8W F801 061G1206000 4 RST CHIPR 0 OHM +-5% 1/4W R914 061G1206204 RST CHIPR 200 KOHM +-5% 1/4W R902 061G1206684...
  • Page 48 17” LCD Color Monitor AOC 177S ZD901 093G 39S 38 T PTZ 9.1B ZD801 093G 39S 49 T mtzs05-5.6-g ZD903 093G 39S 50 T MTZS05-5.1-G ZD902 093G 39S 51 T MTZS05-12-G ZD903 093G 39S 72 T BZT52C5V1 7 F ZD801...
  • Page 49 17” LCD Color Monitor AOC 177S BOM for PWB SMTC5CNNA1QP Location Part No. Description 033G802315A H WAFER 033G802315A H WAFER 056G 379 64 CT1102 056G 562122CA4 NT68621MEFG-64 056G 563 75 G1084-33T43UF TO-252 056G 563 76 G960T63UF SOT-223 056G 563 77...
  • Page 50 17” LCD Color Monitor AOC 177S 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R106 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R107 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R160 061G0603000 RST CHIPR 0 OHM +-5% 1/10W 061G0603000 RST CHIPR 0 OHM +-5% 1/10W...
  • Page 51 17” LCD Color Monitor AOC 177S 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R180 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R181 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R185 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R186 061G0603101 RST CHIPR 100 OHM +-5% 1/10W...
  • Page 52 17” LCD Color Monitor AOC 177S R120 061G0603150 9F RST CHIPR 15 OHM +-1% 1/10W 061G0603153 RST CHIPR 15KOHM +-5% 1/10W 061G0603153 RST CHIPR 15KOHM +-5% 1/10W 061G0603153 RST CHIPR 15KOHM +-5% 1/10W 061G0603169 0F RST CHIPR 169 OHM +-1% 1/10W...
  • Page 53 17” LCD Color Monitor AOC 177S R105 061G0603453 2F RST CHIPR 45.3 KOHM +-1% 1/10W R131 061G0603464 9F RST CHIPR 46.4 OHM +-1% 1/10W 061G0603470 RST CHIPR 47 OHM +-5% 1/10W 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W 061G0603472 RST CHIPR 4.7KOHM +-5% 1/10W...
  • Page 54 17” LCD Color Monitor AOC 177S 065G060310332T MLCC 0603 CAP 10NF K 50V X7R 065G060310332T MLCC 0603 CAP 10NF K 50V X7R 065G060310332T MLCC 0603 CAP 10NF K 50V X7R 065G060310332Y MLCC 0603 CAP 10NF K 50V X7R 065G060310332Y MLCC 0603 CAP 10NF K 50V X7R...
  • Page 55 17” LCD Color Monitor AOC 177S 065G060310412T MLCC 0603 CAP 100NF K 16V X7R 065G060310412T MLCC 0603 CAP 100NF K 16V X7R 065G060310412T MLCC 0603 CAP 100NF K 16V X7R 065G060310412T MLCC 0603 CAP 100NF K 16V X7R C132 065G060310412T...
  • Page 56 17” LCD Color Monitor AOC 177S 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R...
  • Page 57 17” LCD Color Monitor AOC 177S C109 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R C108 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R C106 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R C105 065G060310412Y MLCC 0603 CAP 100NF K 16V X7R...
  • Page 58 17” LCD Color Monitor AOC 177S 065G060322032T MLCC 0603 CAP 22PF K 50V X7R 065G060322032T MLCC 0603 CAP 22PF K 50V X7R 065G060322032T MLCC 0603 CAP 22PF K 50V X7R 065G060322032Y MLCC 0603 CAP 22PF K 50V X7R 065G060322032Y MLCC 0603 CAP 22PF K 50V X7R...
  • Page 59 17” LCD Color Monitor AOC 177S 071G 56D102 B201209D102TT 071G 56F102 K CHIP BEAD 1KOHM 071G 56Z601 M CHIP BEAD 600OHM 071G 59C300 CHIP BEAD 071G 59C300 CHIP BEAD 071G 59C300 CHIP BEAD 073G253S 12 K SMD CHOKE 4.7uH BS0302CDSU4R7M 075G 359203 P CHIP VR 20K 3mm 0.1W EVM3ESX50B...
  • Page 60: Different Parts List

    17” LCD Color Monitor AOC 177S 12. Different Parts List Diversity of T76CNNMMF1UNNIP compared with T76CNMNKF1ACNIP Location Part No. Description 026G 800504 3 BARCODE LABEL 044GH600 1 handle2 050G 600 4 HANDLE 1 089G410A15N IS POWER CORD WALL-OUT FOR UK...

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