AOC 193P Service Manual
AOC 193P Service Manual

AOC 193P Service Manual

19” lcd color monitor

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19" 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..........................................8
4. Input/Output Specification.......................................10
4.1 Input Signal Connector.............................................10
4.2 Factory Preset Display Modes.....................................11
N
4.3 Panel Specification.................................................12
5. Block Diagram.....................................................15
5.1 Software Flow Chart.............................................15
5.2 Electrical Block Diagram....................................17
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......................................................19
6.1 Main Board............................................................19
6.2 Inverter Board.....................................................25
6.3 Adapter Board....................................................27
7.PCB Layout...........................................................28
7.1 Main Board........................................................28
7.2 Inverter Board.................................................31
7.3 Adapter Board.................................................33
7.4 Key Board............................................................33
8. Maintainability................................................34
8.2 Trouble Shooting..............................................34
10. Monitor Exploded View........................................41
11. BOM List..............................................................42
SAFETY NOTICE
1
AOC 193P
Horizontal Frequency
30kHz - 83kHz
Page

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Summary of Contents for AOC 193P

  • Page 1: Table Of Contents

    19” LCD Color Monitor AOC 193P Service Service Service Horizontal Frequency 30kHz – 83kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……..……......…..1 6.Schematic……………........…19 Revision List.….....……......……..2 6.1 Main Board.………..……..........19 Important Safety Notice.…………....……..3 6.2 Inverter Board..………..……........25 1. Monitor Specification......………..4 6.3 Adapter Board..………..…….........27 2.
  • Page 2: Revision List

    19” LCD Color Monitor AOC 193P Revision List Revision Date Revision History TPV Model T94AM2HCBMPUNP Aug-29-06 Initial Release T980KA2HCSION...
  • Page 3: Important Safety Notice

    AOC 193P 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

    19” LCD Color Monitor AOC 193P Monitor Specifications Driving system TFT Color LCD LCD Panel Size 48cm(19") Pixel pitch 0.294mm( H ) × 0.294mm( V ) R,G,B Analog Interface Video Digital Interface Input Separate Sync. H/V TTL H-Frequency 30kHz – 83kHz...
  • Page 5: Lcd Monitor Description

    19” LCD Color Monitor AOC 193P 2. LCD Monitor Description The LCD monitor will contain a main board, a power board and 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 Instruction

    19” LCD Color Monitor AOC 193P 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 19” LCD Color Monitor AOC 193P FRONT PANEL CONTROL • Power Button: Press this button to switch ON/OFF of monitor’s power. • 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 Brightness/ Contrast Adjust OSD status.
  • Page 8: Adjusting The Picture

    19” LCD Color Monitor AOC 193P 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 19” LCD Color Monitor AOC 193P OSD Timeout Adjust the OSD timeout. Language Language Select the language you like. Show the resolution, H/V frequency and input port of Information Information current input timing. Clear each old status of Auto-configuration. Reset Do not execute reset, return to main menu.
  • Page 10: Input/Output Specification

    19” LCD Color Monitor AOC 193P 4. Input/Output Specification 4.1 Input Signal 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 Pin No. Description Pin No. Description TMDS Data 2-...
  • Page 11: Factory Preset Display Modes

    19” LCD Color Monitor AOC 193P 4.2 Factory Preset Display Modes Horizontal Vertical Standard Resolution Frequency Frequency 31.47kHz 70.0Hz Dos-mode 720 × 400 640 × 480 31.47kHz 60.0Hz 640 × 480 37.50kHz 75.0Hz 800 × 600 37.879kHz 60.0Hz SVGA 800 × 600 46.875kHz...
  • Page 12: Panel Specification

    19” LCD Color Monitor AOC 193P 4.3 Panel Specification 4.3.1 Features 4.3.2 Display Characteristics...
  • Page 13 19” LCD Color Monitor AOC 193P 4.3.3 Optical Characteristics Electrical characteristics...
  • Page 14 19” LCD Color Monitor AOC 193P Backlight unit...
  • Page 15: Block Diagram

    19” LCD Color Monitor AOC 193P 5. Block Diagram 5.1 Software Flow Chart...
  • Page 16 19” LCD Color Monitor AOC 193P 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 17: Electrical Block Diagram

    19” LCD Color Monitor AOC 193P 5.2 Electrical Block Diagram 5.2.1 Main Board Crystal LCD Interface 24MHz (CN503) (X601) Scalar IC TSU56AK Crystal MTV512GMV (Include ADC, OSD) 14.318MHz (U601) (U401) (X401) EPR_SDA EPR_SCL H sync Digital Video V sync Signal...
  • Page 18 19” LCD Color Monitor AOC 193P 5.2.2 Inverter/Power Board Bridge Rectifier Transformer AC input Rectifier diodes EMI filte and Filter U101 Start Circuit: R903、R904 CN102 Feedback Over Circuit Voltage Control IC Protect ON/OFF Output MOSFET Transformer Circuit Q203、Q204 Lamp Feedback...
  • Page 19: Schematic

    19” LCD Color Monitor AOC 193P 6. Schematic 6.1 Main Board TSU16/56AK SCHEMATIC RI N RI N GN DR GN DR GI N GI N GN DG GN DG DD C_ CLK SO G SO G VC C1. 8 VC C3. 3...
  • Page 20 19” LCD Color Monitor AOC 193P VCC5V+ VCC5V SOT-252 D202 U201 VCC12V R202 GS1D VCC1.8 VCC12V AZ1117D -1.8 CN201 10K£[ 1/1 6W VCC1.8 ON_OFF R201 4.7K£[ 1/ 16W C210 C211 C212 VCC12V VCC12V D201 SS14 C201 R212 4.7K£[ 1/ 16W 0.1uF...
  • Page 21 19” LCD Color Monitor AOC 193P CN301 DB15 R301 33£[ 1/16W C304 0.047uF FB301 0£[ 1/16W FB302 0£[ 1/16W R302 33£[ 1/16W C305 0.047uF FB303 0£[ 1/16W R303 33£[ 1/16W C306 0.047uF R304 470£[ 1/16W C307 0.001uF PC5V R325 C301...
  • Page 22 19” LCD Color Monitor AOC 193P VCC3.3 FB401 VCC1.8 FB402 VCC3.3 VCC1.8 600 OHM 600 OHM C405 C414 10uF/16V 10uF/16V VPLL VDVI VDPLL C406 C407 C408 C409 C410 C411 C412 C413 C415 C416 C417 C418 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF...
  • Page 23 19” LCD Color Monitor AOC 193P PA[ 0..9] PA[ 0..9] LVA 3P CN 503 LVA 3M LVA CKP LVA CKM LVB 0M RXO 0- RXO 0+ LVB 0P LVA 2P LVB 1M RXO 1- RXO 1+ LVB 1P LVA 2M...
  • Page 24 19” LCD Color Monitor AOC 193P VCPU VCPU RN602 RN601 R601 R602 C601 R607 10K£[ 1/16W 10K£[ 1/16W R606 10K£[ 1/16W 10K£[ 1/16W 0.1uF 10K£[ 1/16W 4/2/2004-change Crystal from 20MHz to 24MHz 10K£[ 1/16W R644 R645 R646 C602 22pF 10K£[ 1/16W...
  • Page 25: Inverter Board

    19” LCD Color Monitor AOC 193P 6.2 Inverter Board L1 03 +1 2V L1 01 N1 01 B EA D 7 1L 55 19 F 101 U 10 1 S I-8 050 SD L1 02 +V IN V OU T...
  • Page 26 19” LCD Color Monitor AOC 193P L201 F201 4A63V Q203 R224 R226 TP1 HVL TP3 HVL R225 R227 +12V Q202 120UH CN201 C202 C201 C230 C215 0.1uF/25V Q201 OPEN D203 PT201 DTA144WKA R212 AO4411 150uF/25V 3.9K£[ 1/16W R216 RLZ11B C204 DTC144WKA 220£[ 1/16W...
  • Page 27: Adapter Board

    R920 C916 C917 104/0805 /X7R 1R5/1206 R918 1R5/1206 R921 471/0805 /X7R 1R5/1206 1R5/1206 105/0805 /X7R <Title> R919 1R5/1206 AOC 1260A SG6841 BiCOMS Size Documen t Number ADPC126 0A lay out :71 5L901-1-8 Date: Wednesd ay , April 09, 2003 Sheet...
  • Page 28: Pcb Layout

    19” LCD Color Monitor AOC 193P 7. PCB Layout 7.1 Main Board...
  • Page 29 19” LCD Color Monitor AOC 193P...
  • Page 30 19” LCD Color Monitor AOC 193P...
  • Page 31: Inverter Board

    19” LCD Color Monitor AOC 193P 7.2 Inverter Board...
  • Page 32 19” LCD Color Monitor AOC 193P...
  • Page 33: Adapter Board

    19” LCD Color Monitor AOC 193P 7.3 Adapter Board 7.4 Key Board...
  • Page 34: Maintainability

    19” LCD Color Monitor AOC 193P 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...
  • Page 35 19” LCD Color Monitor AOC 193P No picture (LED orange) No picture The button if X601 oscillate Replace X601 under control waveform is normal Check reset circuit of Check Correspondent U601 is normal component Measure U201 PIN2=1.8V U202 PIN2=3.3V Replace U601...
  • Page 36 19” LCD Color Monitor AOC 193P White screen White screen Measure Q204 base X601 oscillate is high level? waveform is normal Replace X601 Check Q204, Q203 is Check reset circuit of broken or CN503 solder? U601 is normal Check Correspondent Check Correspondent component.
  • Page 37 19” LCD Color Monitor AOC 193P 8.2.2 Power/Inverter Board No power Check CN102 pin 5/6 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C904 (+) Check bridge rectified circuit and F901 circuit...
  • Page 38 19” LCD Color Monitor AOC 193P 2) W / LED, No Backlight Check C201 (+) =12V Check adapter Check ON/OFF signal Check Interface board or main board Check U201 pin9=12V pin9=12vvoltage of C905(+) Change Q201 or Q202 Check U201 PIN 10 / 7 have the output of sawtooth wave at short time Change U201 Check D201/D202 (-) has the output of square wave at short time.
  • Page 39 19” LCD Color Monitor AOC 193P 8.2.3 Keypad Board OSD is unstable or not working Connect Key Pad Board Is Key Pad Board connecting normally? Replace Button Switch Is Button Switch normally? Is Key Pad Board normally? Replace Key Pad Board...
  • Page 40: White-Balance, Luminance Adjustment

    19” LCD Color Monitor AOC 193P 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. 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.
  • Page 41: Monitor Exploded View

    19” LCD Color Monitor AOC 193P 10. Monitor Exploded View Description Description Bezel MAIN FRAME key pad REAR COVER PANEL-SIDE-BKT RUBBER PANEL HINGE BRACKET CONVERSION BOARD HINGE INVERTER BOARD STAND SHIELD MYLAR BASE MYLAR FOOT PORON...
  • Page 42: Bom List

    19” LCD Color Monitor AOC 193P 11. BOM List T94AM2HCBMPUNP Location Part No. Description 007G 6 L 32 COMPOUND PALLET 015G6214 3 MAIN FRAME 026G 800504 3 BARCODE LABEL 033G4847 1 L LENS 044G3924 1 EPS(L) 044G3924 2 EPS(R) 044G6000 1 1A...
  • Page 43 19” LCD Color Monitor AOC 193P C904 067G 30515114H 150UF 400V HERMEI C911 067G215C102 4H 1000UF 25V LZ HER MEI C912 067G215C102 4H 1000UF 25V LZ HER MEI C920 067G215C102 4H 1000UF 25V LZ HER MEI 071G 55500 S FERRITE BEAD 3.5*3*1.3...
  • Page 44 19” LCD Color Monitor AOC 193P R921 061G1206159 RST CHIPR 1.5 OHM +-5% 1/4W R920 061G1206159 RST CHIPR 1.5 OHM +-5% 1/4W R919 061G1206159 RST CHIPR 1.5 OHM +-5% 1/4W R918 061G1206159 RST CHIPR 1.5 OHM +-5% 1/4W R908 061G1206204...
  • Page 45 19” LCD Color Monitor AOC 193P C419 067G215Y100 7R LOW E.S.R 10UF +/-20% 50 C422 067G215Y100 7R LOW E.S.R 10UF +/-20% 50 C424 067G215Y100 7R LOW E.S.R 10UF +/-20% 50 C427 067G215Y100 7R LOW E.S.R 10UF +/-20% 50 C405 067G215Y100 7R LOW E.S.R 10UF +/-20% 50...
  • Page 46 19” LCD Color Monitor AOC 193P R608 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R609 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R636 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R639 061G0603101 RST CHIPR 100 OHM +-5% 1/10W R305 061G0603101...
  • Page 47 19” LCD Color Monitor AOC 193P R503 061G0603222 RST CHIPR 2.2 KOHM +-5% 1/10W R647 061G0603223 RST CHIPR 22 KOHM +-5% 1/10W R301 061G0603330 RST CHIPR 33 OHM +-5% 1/10W R302 061G0603330 RST CHIPR 33 OHM +-5% 1/10W R303 061G0603330...
  • Page 48 19” LCD Color Monitor AOC 193P C428 065G0603104 32 CHIP 0.1UF 50V X7R C510 065G0603104 32 CHIP 0.1UF 50V X7R C601 065G0603104 32 CHIP 0.1UF 50V X7R C618 065G0603104 32 CHIP 0.1UF 50V X7R C619 065G0603104 32 CHIP 0.1UF 50V X7R...
  • Page 49 19” LCD Color Monitor AOC 193P D319 093G 39147 TZMC5V6 D320 093G 39147 TZMC5V6 D321 093G 39147 TZMC5V6 D325 093G 39147 TZMC5V6 D326 093G 64 42 P BAV70 SOT-23 D305 093G 64 42 P BAV70 SOT-23 D304 093G 64 42 P...
  • Page 50 19” LCD Color Monitor AOC 193P PT202 080LL15T 7YSG X'FMR CON101 088G 3041CF DC JACK CON102 095G8014 6512 WIRE HARNESS ID1942AUF1SMTP INVERTER DO BOARD FOR SMT U101 056G 563 20 AP1501-50K5A U201 056G 608 1 TL1451ACD Q205 057G 417 4...
  • Page 51 19” LCD Color Monitor AOC 193P C202 065G0805104 22 0.1UF +-10% 25V X7R 080 C204 065G0805104 22 0.1UF +-10% 25V X7R 080 C205 065G0805104 22 0.1UF +-10% 25V X7R 080 C206 065G0805104 22 0.1UF +-10% 25V X7R 080 C230 065G0805104 22 0.1UF +-10% 25V X7R 080...
  • Page 52 19” LCD Color Monitor AOC 193P 077G 604 2 CJ TSDPA-2-T-NP 077G 604 2 CJ TSDPA-2-T-NP 077G 604 2 CJ TSDPA-2-T-NP 077G 604 2 CJ TSDPA-2-T-NP 081G 14501 KT CHIP LED 093G 39P599 T MM3Z5V6B 093G 39P599 T MM3Z5V6B 715G1317 2 3...
  • Page 53 19” LCD Color Monitor AOC 193P T980KA2HCSION Location Part No. Description 007G 5 L 73 COMPOUND PALLET 007G 5 L 74 COMPOUND PALLET 012G 412 1 FOOT_HEAD(T1.2mm) 015G6214 3 MAIN FRAME 026G 800504 3 BARCODE LABEL 033G4847 2 L LENS...
  • Page 54 19” LCD Color Monitor AOC 193P C902 065T305M1022E3 1NF,400VAC ,Y2,M EC 105℃ CAP 1000UF M 25V C920 067G215C1024KV EC 105℃ CAP 1000UF M 25V C911 067G215C1024KV EC 105℃ CAP 1000UF M 25V C912 067G215C1024KV C904 067T 30515114H 150UF 400V HERMEI 071T 55500 S FERRITE BEAD 3.5*3*1.3...
  • Page 55 19” LCD Color Monitor AOC 193P R908 061T1206204 RST CHIPR 200 KOHM +-5% 1/4W R907 061T1206204 RST CHIPR 200 KOHM +-5% 1/4W R906 061T1206204 RST CHIPR 200 KOHM +-5% 1/4W R905 061T1206204 RST CHIPR 200 KOHM +-5% 1/4W R923 061T1206470...
  • Page 56 19” LCD Color Monitor AOC 193P CN301 088G 35315F H D-SUB 15PIN CN302 088G 35424F H DV1 CONNECTOR 24PIN X601 093G 22 45 H 24MHZ/30PF/49US X401 093G 22 53 CRYSTAL 14.318MHzHC-49US AIC980KA2AON MAIN BOARD 040G 457624 1B LABEL-CPU U401 056G 562 82...
  • Page 57 19” LCD Color Monitor AOC 193P R624 061G0603102 RST CHIP 1K 1/10W 5% R407 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R406 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R405 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R404 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W...
  • Page 58 19” LCD Color Monitor AOC 193P R325 061G0603750 RST CHIPR 75 OHM +-5% 1/10W R651 061G0603912 RST CHIPR 9.1 KOHM +-5% 1/10W C610 065G0603102 32 1000PF +-10% 50V X7R C609 065G0603102 32 1000PF +-10% 50V X7R C608 065G0603102 32 1000PF +-10% 50V X7R...
  • Page 59 19” LCD Color Monitor AOC 193P C604 065G0603270 31 27PF 50V NPO C311 065G0603330 31 CER1 0603 NP0 50V 33P PM C310 065G0603473 32 CHIP 0.047UF 50V X7R C309 065G0603473 32 CHIP 0.047UF 50V X7R C308 065G0603473 32 CHIP 0.047UF 50V X7R...
  • Page 60 19” LCD Color Monitor AOC 193P C213 063G210J1842A2 PMS 0.18UF 250V C214 063G210J1842A2 PMS 0.18UF 250V C218 065G 3J2206ET 22PF 5% SL 3KV TDK C217 065G 3J2206ET 22PF 5% SL 3KV TDK C216 065G 3J2206ET 22PF 5% SL 3KV TDK...
  • Page 61 19” LCD Color Monitor AOC 193P R235 061G0603621 RST CHIPR 620 OHM +-5% 1/10W R204 061G0805100 2F RST CHIPR 10KOHM +-1% 1/8W F201 061G1206000 4 RST CHIPR 0 OHM +-5% 1/4W C108 065G0805104 22 0.1UF +-10% 25V X7R 080 C109 065G0805104 22 0.1UF +-10% 25V X7R 080...
  • Page 62 19” LCD Color Monitor AOC 193P 065G0603104 32 CHIP 0.1UF 50V X7R 077G 604 2 TO TACT 5W BY TOUKE TS-9-TMG-553 077G 604 2 TO TACT 5W BY TOUKE TS-9-TMG-553 077G 604 2 TO TACT 5W BY TOUKE TS-9-TMG-553 077G 604 2 TO...

Table of Contents