AOC 197Pk2 Service Manual
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AOC 197Pk2 Service Manual

AOC 197Pk2 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
1. Monitor Specification..................................................3
2.LCD Monitor Description........................................4
3. Operation Instruction.............................................5
3.1 General Instructions...................................................5
3.2 Control Button....................................................5
3.3 Adjusting the Picture..........................................5
4. Input/Output Specification.......................................8
4.1 Input Signal Connector.......................................8
4.2 Factory Preset Display Modes.........................9
5 Panel Specification..................................................10
5.1 Display Characteristics....................................10
5.2 Optical Characteristics......................................10
6.Block Diagram...............................................12
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
6.1 Software Flow Chat.........................................12
6.2 Electrical Block Diagram.................................14
7. Schematic.................................................... 16
7.1 Main Board..........................................................16
7.2 Power Board.......................................................21
8. PCB Layout.....................................................23
8.1 Main Board.....................................................23
8.2 Power Board.........................................................25
8.3 Key Board.......................................................28
8.4 Audio Board.................................................28
9. Maintainability................................................29
9.2. Trouble Shooting................................................30
11.Monitor Exploded View...................................36
12. BOM List..............................................................37
SAFETY NOTICE
1
AOC 197Pk2
Horizontal Frequency
30-83 kHz
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Summary of Contents for AOC 197Pk2

  • Page 1: Table Of Contents

    19" LCD Color Monitor AOC 197Pk2 Service Service Service Horizontal Frequency 30-83 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……....……...…..1 6.1 Software Flow Chat…….…..…………..12 6.2 Electrical Block Diagram………...………...…..14 Revision List.…......………....……..2 1. Monitor Specification.........………..3 7. Schematic……………………………………………. 16 7.1 Main Board…………..........16 2.LCD Monitor Description……………………………..4...

  • Page 2: Revision List

    19" LCD Color Monitor AOC 197Pk2 Revision List Revision Date Revision History TPV Model Mar.-20-2008 Initial release T97HMJDBF1A1DNE...

  • Page 3: Monitor Specification

    19" LCD Color Monitor AOC 197Pk2 1. Monitor Specifications Model number 197Pk2 Driving system TFT Color LCD Size 48.0cm ( 19" 4:3) Pixel pitch 0.294mm(H) x 0.294mm(V) LCD Panel Video R, G, B Analog interface & Digital Interface Separate Sync.

  • Page 4: Lcd Monitor Description

    19" LCD Color Monitor AOC 197Pk2 2. LCD Monitor Description The LCD MONITOR will contain a main board, a power board, an audio board and a key board which house the flat panel control logic, brightness control logic and DDC.

  • Page 5: Operation Instruction

    19" LCD Color Monitor AOC 197Pk2 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 6 19" LCD Color Monitor AOC 197Pk2 Luminance Adjust Range Description Brightness 0-100 Backlight Adjustment Contrast 0-100 Contrast from Digital-register. Standard Standard Mode Text Text Mode Internet Internet Mode Game Game Mode Movie Movie Mode Sports Sports Mode Gamma1 Adjust to Gamma1...
  • Page 7 19" LCD Color Monitor AOC 197Pk2 V.Position 0-100 Adjust the horizontal position of OSD Timeout 5-100 Adjust the OSD Timeout Language Select the OSD language Extra Digital Select Digital Sigal Source as Input Input Select Analog Select Analog Sigal Source as Input...

  • Page 8: Input/Output Specification

    19" LCD Color Monitor AOC 197Pk2 4. Input/Output Specification 4.1 Input Signal Connector 4.1.1 D-SUB connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION Video-Red Video-Green Detect Cable Video-Blue N.C. N.C. DDC-Serial data Ground H-sync GND-R V-sync GND-G DDC-Serial clock GND-B VGA connector layout 4.1.2 DVI-D connector...

  • Page 9: Factory Preset Display Modes

    19" LCD Color Monitor AOC 197Pk2 4.2 Factory Preset Display Modes Horizontal Vertical Standard Resolution Frequency (kHz) Frequency (Hz) Dos-mode 720 x 400 31.47 640 x 480 31.47 640 x 480 35.00 640 x 480 37.50 640 x 480 37.86 800 x 600 37.879...

  • Page 10: Panel Specification

    19" LCD Color Monitor AOC 197Pk2 5 Panel Specification 5.1 Display Characteristics 5.2 Optical Characteristics...

  • Page 11: Parameter Guide Line For Ccfl Inverter

    19" LCD Color Monitor AOC 197Pk2 5.3 Parameter guide line for CCFL Inverter 1.TFT LCD Module: 2.Back Light Unit:...

  • Page 12: Block Diagram

    19" LCD Color Monitor AOC 197Pk2 6. Block Diagram 6.1 Software Flow Chat...
  • Page 13 19" LCD Color Monitor AOC 197Pk2 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.

  • Page 14: Electrical Block Diagram

    19" LCD Color Monitor AOC 197Pk2 6.2 Electric Block Diagram 6.2.1 Main Board LCD Interface (CN101) FLASH MEMORY Scalar TSUMO5PHJ PM25LV010A (Include :MCU,ADC,OSD etc) (U402) (U401) H sync V sync DCLK+ DCLK- EEPROM M24C16 (U403) D-Sub DVID Connector Connector (CN405)
  • Page 15 19" LCD Color Monitor AOC 197Pk2 6.2.2 Inverter / Power Board Bridge Rectifier Transformer AC input Rectifier diode EMI filte r and Filter Start Circuit: R905、R906、 R907、R908、R909、R910 Over Control IC Voltage Protect ON/OFF OSC and DC Convert MOSFET Output Circuit...

  • Page 16: Schematic

    19" LCD Color Monitor AOC 197Pk2 7. Schematic 7.1 Main Board TSUMU58J SCHEMATIC HDCP_RST HDCP_RST LVDS OUTPUT GNDR GNDR GNDG GNDG GNDB GNDB HSY NC HSY NC VCC1.8 VCC3.3 +12V VSY NC VSY NC DDCA_SDA DDCA_SDA DDCA_SCL DDCA_SCL DET_VGA DET_VGA...
  • Page 17 19" LCD Color Monitor AOC 197Pk2 VCTRL SOT-223 R702 +3V3 1/10W 　 U701 D704 VCC1.8 TO-263 VCC3.3 C702 SR24 4.7uF/50V VCC1.8 4 C701 C704 U702 AIC1084-33PM D701 VCC3.3 0.1uF C703 0.1uF C712 C714 GS1D 100uF/25V C713 Q702 R703 0.1uF 100uF/25V 0.1uF...
  • Page 18 19" LCD Color Monitor AOC 197Pk2 CN405 RED+ FB410 0 　 1/10W R434 　 1/10W C432 0.047uF RED- GREEN+ FB411 0 　 1/10W R435 　 1/10W C433 0.047uF GREEN- BLUE+ FB412 0 　 1/10W R436 　 1/10W C434 0.047uF BLUE-...
  • Page 19 19" LCD Color Monitor AOC 197Pk2 AVDD_33 VDDC VDDP AVDD_18 AVDD_MEMPLL_33 VCC3.3 FB403 VDDP VCC3.3 VCC3.3 FB405 AVDD_MEMPLL_33 600 OHM C408 C461 600 OHM 10uF/50V 0.1uF VCC3.3 VCTRL VCTRL C416 C409 C410 C411 C412 C413 C419 C420 0.1uF 0.1uF 0.1uF 0.1uF...
  • Page 20 19" LCD Color Monitor AOC 197Pk2 CN101 VLCD PA[0..9] PA[0..9] LVA3P LVB0M RXO0- RXO0+ LVB0P LVA3M LVB1M RXO1- RXO1+ LVB1P LVACKP LVB2M RXO2- RXO2+ LVB2P LVACKM LVBCKM RXOC- RXOC+ LVBCKP CN102 LVA2P LVB3M RXO3- RXO3+ LVB3P IL-FPC-30P-1MM LVA2M LVA0M RXE0-...

  • Page 21: Power Board

    　 1/4W R930 IC921 KIA431 Q910 1/10W 　 R929 HS3 D920 HS4 Q900 2.4K 　 1/10W 1% AOC (Top Victory) Electronics Co., Ltd. CN901 RJ901 RJ902 Title PWPC1742HDE2P(715G1823-1) SOCKET HEAT SINK HEAT SINK 1/8W 1/8W 　 　 Size Document Number...
  • Page 22 1000P/50V R830 　 1/10W Q806 AM9945 R835 C838 　 1/10W D804 BAV99 1UF/25V AOC (Top Victory) Electronics Co., Ltd. Title R834 2. FOR 17" 4 LAMPS INVERTER D803 N.C R833 3.6K 　 1/10W 1% BAV70 1/10W 　 Size Document Number...

  • Page 23: Pcb Layout

    19" LCD Color Monitor AOC 197Pk2 8. PCB Layout 8.1 Main Board...
  • Page 24 19" LCD Color Monitor AOC 197Pk2...

  • Page 25: Power Board

    19" LCD Color Monitor AOC 197Pk2 8.2 Power Board...
  • Page 26 19" LCD Color Monitor AOC 197Pk2...
  • Page 27 19" LCD Color Monitor AOC 197Pk2...

  • Page 28: Key Board

    19" LCD Color Monitor AOC 197Pk2 8.3 Key Board 8.4 Audio Board...

  • Page 29: Maintainability

    19" LCD Color Monitor AOC 197Pk2 9. Maintainability 9.1 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 30: Trouble Shooting

    19" LCD Color Monitor AOC 197Pk2 9.2 Trouble Shooting 9.2.1 Main Board 1. NO SCREEN APPEAR No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal...
  • Page 31 19" LCD Color Monitor AOC 197Pk2 No picture (LED orange) No picture Measure U702 Vout=3.3V Q702 Vc=1.8V Replace U702, Q702 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected...
  • Page 32 19" LCD Color Monitor AOC 197Pk2 9.2.2 Power Board 1. No Power Check CN902 pin3= 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C907(+) Check bridge rectified circuit and F901 circuit Check start voltage for the pin3 of IC901...
  • Page 33 19" LCD Color Monitor AOC 197Pk2 2. W/LED No Backlight Check C811 (+) =12V Change Q803 Check ON/OFF signal Check main board Check IC801 pin6=12V Change Q805 or Q806 Check the pin1 of IC801 have saw tooth wave Change IC801...
  • Page 34 19" LCD Color Monitor AOC 197Pk2 9.2.3 Key Board OSD is unstable or not working Connect Key Pad Board Is Key Pad Board connecting normally ? Replace Button Switch Is Button Switch normally ? Replace Key Pad Board Is Key Pad Board normally ?

  • Page 35: White-Balance, Luminance Adjustment

    6500 color temp. parameter is x = 313±20, y = 329 ±20, Y =180 cd/m 3. Into factory mode of 197Pk2 Turn on power, 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 36: Monitor Exploded View

    19" LCD Color Monitor AOC 197Pk2 11. Monitor Exploded View...

  • Page 37: Bom List

    19" LCD Color Monitor AOC 197Pk2 12. BOM List T97HMJDBF1A1DNE Location Part NO. Description AUPC980KH6AP AUDIO BOARD CBPC7HMJACH MAIN BOARD KEPC6HB5 KEY BOARD PWPC942HE1P POWER BOARD 15G5786 1 BKT VESA 26G 800504 3H BARCODE 40G 58162435A MANUAL LABEL 41G780061553A TCO03 CARD...
  • Page 38 19" LCD Color Monitor AOC 197Pk2 Q33G4986 1 1C POWER LENS Q34G1871 GM AB REAR COVER Q34G1872 YDA1B BEZEL Q44G3965 5 U TYPE SHEET Q44G9055 1EPE EPE(L) Q44G9055 2EPE EPE(R) Q45G 76 28 H PE BAG FOR MANUAL Q45G 76 28NV2...
  • Page 39 19" LCD Color Monitor AOC 197Pk2 ELCAP 4.7UF +-20% 50V 105℃ N C702 67G215Y479 7N U401 56G 562532 TSUMO5PHJ U702 56G 563 7 AIC1084-33PM U406 56G 643 20 RESET_4.38V_G690H438T73UF U404 56G1133 34 M24C02-WMN6TP U405 56G1133 34 M24C02-WMN6TP U403 56G1133 56...
  • Page 40 19" LCD Color Monitor AOC 197Pk2 R494 61G0603101 RST CHIPR 100 OHM +-5% 1/10W R495 61G0603101 RST CHIPR 100 OHM +-5% 1/10W R704 61G0603101 RST CHIPR 100 OHM +-5% 1/10W R430 61G0603102 RST CHIPR 1KOHM +-5% 1/10W R446 61G0603102 RST CHIPR 1KOHM +-5% 1/10W...
  • Page 41 19" LCD Color Monitor AOC 197Pk2 R433 61G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R707 61G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R712 61G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R725 61G0603472 RST CHIPR 4.7KOHM +-5% 1/10W R702 61G0603510 RST CHIPR 51 OHM +-5% 1/10W...
  • Page 42 19" LCD Color Monitor AOC 197Pk2 C463 65G0603104 22 CAP 0603 0.1UF +-10% 25V X7R C706 65G0603104 22 CAP 0603 0.1UF +-10% 25V X7R C709 65G0603104 22 CAP 0603 0.1UF +-10% 25V X7R C711 65G0603104 22 CAP 0603 0.1UF +-10% 25V X7R...
  • Page 43 19" LCD Color Monitor AOC 197Pk2 D424 93G 6433P BAV99 D401 93G 39S 45 T RLZ36B BY ROHM D402 93G 39S 45 T RLZ36B BY ROHM D425 93G 39S 45 T RLZ36B BY ROHM D701 93G1020 1 S GS1D D704...
  • Page 44 19" LCD Color Monitor AOC 197Pk2 F901 84G 55 5 FUSE 2.50A 250V CN901 87G 501 32 S AC SOCKET D900 93G1100 1152T DIODE PR1007R 1A/1000V D0-41 CN902 95G8014 12 42 HARNESS Q85G0043 1 S SHIELD C901 65G305M1022E2 1000P 400VAC/250VAC...
  • Page 45 19" LCD Color Monitor AOC 197Pk2 C835 61G1206000 RST CHIPR 0 OHM +-5% 1/4W C836 61G1206000 RST CHIPR 0 OHM +-5% 1/4W C837 61G1206000 RST CHIPR 0 OHM +-5% 1/4W C838 61G1206000 RST CHIPR 0 OHM +-5% 1/4W F902 61G1206000...
  • Page 46 19" LCD Color Monitor AOC 197Pk2 D802 93G 6433P BAV99 D804 93G 6433P BAV99 ZD801 93G 39S 24 T RLZ 5.6B LLDS ZD922 93G 39S 25 T RLZ5.1B BY ROHM ZD920 93G 39S 38 T PTZ 9.1B ZD921 93G 39S 40 T...
  • Page 47 19" LCD Color Monitor AOC 197Pk2 D920 93G 60276 DIODE SBT150-10LST SANYO M1G1730 8120 SCREW Q900 57G 667 21 STP10NK70ZFP HS4 Q9 0 90G6264 1 HEAT SINK M1G1730 8120 SCREW 1G6023 1 SCREW 19G6034 1 STOPPER PIN 37G 564 2...

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