AOC 936Swa Service Manual

AOC 936Swa Service Manual

18.5" lcd color monitor

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18.5" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Table Of Contents..........................................................1
Revision List.................................................................2
Revision List.................................................................2
1. Monitor Specification..................................................4
1. Monitor Specification..................................................3
2. LCD Monitor Description........................................5
2.LCD Monitor Description........................................4
3. Operation Instruction.............................................6
3. Operation Instruction.............................................5
3.1 General Instructions...................................................6
3.1 General Instructions...................................................5
3.2 Control Button....................................................6
3.2 Control Button....................................................5
3.3 Adjusting the Picture..........................................7
3.3 Adjusting the Picture..........................................5
4. Input/Output Specification.......................................8
4. Input/Output Specification.......................................8
4.1 Input Signal Connector.......................................8
4.1 Input Signal Connector.......................................8
4.2 Factory Preset Display Modes.........................8
4.2 Factory Preset Display Modes.........................9
5 Panel Specification..................................................9
5 Panel Specification..................................................10
5.1 Display Characteristics....................................9
5.1 Display Characteristics....................................10
5.2 Optical Characteristics......................................10
5.2 Optical Characteristics......................................10
6.Block Diagram...............................................15
6.Block Diagram...............................................11
6.1 Software Flow Chart.........................................15
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
6.2 Electrical Block Diagram.................................17
Page
6.1 Software Flow Chat.........................................11
7. Schematic.................................................... 19
6.2 Electrical Block Diagram.................................13
7.1 Main Board..........................................................19
7. Schematic.................................................... 15
7.2 Power Board.......................................................28
7.1 Main Board..........................................................15
8. PCB Layout.....................................................30
7.2 Power Board.......................................................19
8.1 Main Board.....................................................30
8. PCB Layout.....................................................21
8.2 Power Board........................................................34
8.1 Main Board.....................................................21
8.3 Key Board.......................................................36
8.2 Power Board.........................................................22
8.
4 USB Board.........................................................37
8.3 Key Board.......................................................24
9. Maintainability........................................................38
9. Maintainability................................................25
9.2. Trouble Shooting................................................39
9.2. Trouble Shooting................................................26
11.Monitor Exploded View...................................50
11.Monitor Exploded View...................................33
12. BOM List..............................................................51
12. BOM List..............................................................34
13.Different Parts List..........................................60
13.Different Parts List..........................................44
SAFETY NOTICE
1
AOC 936Swa
Horizontal Frequency
30-80 kHz
Page

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Summary of Contents for AOC 936Swa

  • Page 1: Table Of Contents

    18.5" LCD Color Monitor AOC 936Swa Service Service Service Horizontal Frequency 30-80 kHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……....……...…..1 6.2 Electrical Block Diagram………...………...…..17 Table Of Contents..……....……...…..1 Description Page 6.1 Software Flow Chat…….…..…………..11 7. Schematic……………………………………………. 19 Revision List.…......………....……..2 Revision List.…......………....……..2...
  • Page 2: Revision List

    AOC 936Swa 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

    18.5" LCD Color Monitor AOC 936Swa Revision List Version Date Revision History Remark T89MM5NQ6WA16NE Initial release T89AM5NB6WA2UNE T89SM5NB6WA1UNE Jun.-12-2009 M185XW01 Add Panel list in Item 5 LTM185AT02 Add Power Board in Item 715G3244 1 7.1/8.1/9.2...
  • Page 4: Monitor Specification

    18.5" LCD Color Monitor AOC 936Swa 1. Monitor Specification Model number 936Swa Driving system TFT Color LCD Viewable Image Size 470mm diagonal Pixel pitch 0.3mm(H) x 0.3mm(V) LCD Panel Video R, G, B Analog lnterface & Digital Interface Separate Sync.
  • Page 5: Lcd Monitor Description

    18.5" LCD Color Monitor AOC 936Swa 2. LCD Monitor Description The LCD Monitor will contain main board, power board, 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

    18.5" LCD Color Monitor AOC 936Swa 3. Operation Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control knobs 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

    18.5" LCD Color Monitor AOC 936Swa 3.3 Adjusting the Picture OSD Settings Eco mode ---DCR, Standard, Text, Internet, Game, Movie, Sports Notes : When Eco mode is not set as “Standard”, Contrast and Brightness can not be adjusted; When DCR is set as “On”, Contrast, Brightness, Eco mode and Gamma can not be adjusted.
  • Page 8: Input/Output Specification

    18.5" LCD Color Monitor AOC 936Swa 4. Input/Output Specification 4.1 Input Signal Connector D-Sub mini 15pin Connector Pin Number 15-Pin Side of the Signal Cable Pin Number 15-Pin Side of the Signal Cable Video-Red Video-Green Ground Video-Blue N.C. N.C. DDC-Serial data...
  • Page 9: Factory Preset Display Modes

    18.5" LCD Color Monitor AOC 936Swa 5. Panel Specification 5.1 Display Characteristics M185B1-L02 M185XW01...
  • Page 10: Panel Specification

    18.5" LCD Color Monitor AOC 936Swa LTM185AT02 5.2 Optical Characteristics M185B1-L02...
  • Page 11: Block Diagram

    18.5" LCD Color Monitor AOC 936Swa M185XW01...
  • Page 12 18.5" LCD Color Monitor AOC 936Swa LTM185AT02...
  • Page 13: Parameter Guide Line For Ccfl Inverter

    18.5" LCD Color Monitor AOC 936Swa 5.3 Parameter guide line for CCFL Inverter 1. TFT LCD Module M185B1-L02 M185XW01 LTM185AT02...
  • Page 14 18.5" LCD Color Monitor AOC 936Swa 2. Backlight Unit M185B1-L02 M185XW01 LTM185AT02...
  • Page 15: Block Diagram

    18.5" LCD Color Monitor AOC 936Swa 6. Block Diagram 6.1 Software Flow Chart...
  • Page 16 18.5" LCD Color Monitor AOC 936Swa REMARK: 1) MCU initialize. 2) Is the EEprom blank? 3) Program the EEprom by default values. 4) Get the PWM value of brightness from EEprom. 5) Is the power key pressed? 6) Clear all global flags.
  • Page 17: Electrical Block Diagram

    18.5" LCD Color Monitor AOC 936Swa 6.2 Electrical Block Diagram 6.2.1 Scalar Board Crystal 14.31818MHz LCD Interface (CN301) (X401) FLASH MEMORY Scalar TSUM1PFR-LF EN25F20-100GCP (Include :MCU,ADC,OSD etc) (U402) (U401) H sync V sync D-Sub Connector (CN101) VGA_SDA, VGA_SCL EEPROM AZC199-04S...
  • Page 18 18.5" LCD Color Monitor AOC 936Swa 6.2.2 Inverter / Power Board AC input Bridge Rectifier EMI filter Transformer Rectifier diodes and Filter Start Circuit CN902 Feedback Over Circuit Voltage Control IC Protect ON/OFF Transformer MOSFET Resonance Lamp Over ON/OFF Feedback...
  • Page 19: Schematic

    100R 1/16W 5% R453 0R 1/16W 5% POWER_KEY # U402 LED_GRN/BLUE LED_ORANGE R430 100R 1/16W 5% R455 2.2K 1/16W 5% 010A Befor AOC ID2007 OSD R418 C431 C432 C433 C434 C435 ZD401 0R05 1/16W R440 10K 1/16W 5% R461 0R 1/16W 5%...
  • Page 20 18.5" LCD Color Monitor AOC 936Swa FB102 100R 1/16W 5% VGA_B+ R105 C102 DSUB_B+ BEAD 0.047uF H_Sy nc R102 0R05 1/10W 5% R103 1K 1/16W 5% R108 C105 DSUB_H V_Sy nc R104 1K 1/16W 5% 5pF/50V DSUB_V 75R 1/16W 5%...
  • Page 21: Pcb Layout

    18.5" LCD Color Monitor AOC 936Swa CN301 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P LVB0M RXO0- LVA3P LVB3M CN302 LVB0P RXO0+ LVA3M LVBCKP LVB1M RXO1- LVACKP LVBCKM LVB1P RXO1+ LVACKM LVB2P LVB2M RXO2- LVA2P LVB2M LVB2P RXO2+ LVA2M LVB1P LVB0M RXO0- RXO0+...
  • Page 22 18.5" LCD Color Monitor AOC 936Swa CMVCC1 SOT 252 U702 NC/AP1117D33L-13 Both 223 and 252 CN701 foot-print CMVCC1 CMVCC1 BKLT-VBRI R709 BKLT-EN R710 NC PANEL_ID# PANEL_ID# Volume# CMVCC1 VCC3.3 Volume# Mute1 SOT 223 Mute VOUT CONN C701 lock type C712 C707 0.1uF/16V...
  • Page 23: Schematic

    18.5" LCD Color Monitor AOC 936Swa 715G3244 1 TSUM1PFR SCHEMATIC XGA/SXGA LVDS OUTPUT DSUB_R+ DSUB_R+ VCC1.8 DSUB_R- DSUB_R- DSUB_G+ DSUB_G+ VCC3.3 DSUB_G- DSUB_G- VCC1.8 DSUB_SOG DSUB_SOG CMVCC DSUB_B+ DSUB_B+ DSUB_5V DSUB_B- DSUB_B- VCC3.3 CMVCC1 DSUB_H DSUB_H DSUB_V DSUB_V DSUB_5V DDC1_SDA...
  • Page 24 18.5" LCD Color Monitor AOC 936Swa H_Sy nc R101 0R05 1/10W 5% R102 100R 1/16W 5% DSUB_H V_Sy nc R103 100R 1/16W 5% FB102 DSUB_V VCC3.3 R104 C101 VGA_B+ DSUB_B+ R105 R106 C102 C103 BEAD 2K2 1/16W 5% 2K2 1/16W 5% 100R 1/16W 5% 0.047uF...
  • Page 25: Maintainability

    LVA2P DSUB_SOG SOGIN0 LVA2M U402 DSUB_B+ BIN0P LVA1P DSUB_B- BIN0M LVA1M VCC1.8 DSUB_H HSY NC0 LVA0P 010A Befor AOC ID2007 OSD DSUB_V VSY NC0 LVA0M DDC1_SDA VCC1.8 DDCA_SDA/RS232_TX PA[4..9] DDC1_SCL DDCA_SCL/rs232_RX PA[4..9] 020A For ID2008 ID2009 C406 C407 0.1uF/16V 0.1uF/16V U402 PB[0..9]...
  • Page 26: Trouble Shooting

    18.5" LCD Color Monitor AOC 936Swa PANEL_VCC PA[0..1] PA[0..1] CN403 PA[4..9] PA[4..9] R477 R434 C420 NC/150R 1/4W 5% 330 OHM 1/4W 0.1uF/16V PANEL_VCC CN405 PB[0..9] PB[0..9] AO3401L CONN CMVCC NC/CONN 2006-11-7 Add pull up 4K7 to MVCC CMVCC C419 R433 0.1uF/16V...
  • Page 27 18.5" LCD Color Monitor AOC 936Swa 2008/01/14 BAT99 : If 0.05A,VF=1.0V BAV70 : If 0.05A,VF=1.0V It's need to use Low Dropout Regulator. DSUB_5V CMVCC CMVCC1 VCC3.3 VCC3.3 VCC3.3 DSUB_5V 2 5, 6 CMVCC R480 D401 R465 R437 R439 2.2 OHM 2W NC/BAV99 VCC1.8...
  • Page 28: Power Board

    18.5" LCD Color Monitor AOC 936Swa 7.2 Power Board R929 100 OHM 1/4W BD901 C916 F801 KBP208G R930 100 OHM 1/4W 0.001uF 0R05 1/4W 5% +14.5V R903 100 OHM 1/4W 2008-11-22 ZD901 R904 MTZJ T-72 16B D901 C918 220 OHM 2W...
  • Page 29 18.5" LCD Color Monitor AOC 936Swa +14.5V C811 470uF 25V R805 CN801 10K 1/10W 5% C814 R803 1uF 25V R816 CONN 0.1uF50V C801 10pF3KV 2K 1/10W 5% 10 OHM +-5% 1/10W R807 T801 RJ805 R811 POWER X'FMR C815 R815 C802...
  • Page 30: Main Board

    18.5" LCD Color Monitor AOC 936Swa 8. PCB Layout 8.1 Main Board 715G3329 1 2...
  • Page 31: White-Balance, Luminance Adjustment

    18.5" LCD Color Monitor AOC 936Swa...
  • Page 32 18.5" LCD Color Monitor AOC 936Swa 715G3244 1...
  • Page 33: Monitor Exploded View

    18.5" LCD Color Monitor AOC 936Swa...
  • Page 34: Power Board

    18.5" LCD Color Monitor AOC 936Swa 8.2 Power Board 715G2892 2 3...
  • Page 35 18.5" LCD Color Monitor AOC 936Swa...
  • Page 36: Key Board

    18.5" LCD Color Monitor AOC 936Swa 8.3 Key Board 715G3371 1...
  • Page 37: Usb Board

    18.5" LCD Color Monitor AOC 936Swa 8.4 USB Board 715G2663 2 715G3501 2...
  • Page 38: Maintainability

    18.5" LCD Color Monitor AOC 936Swa 9. Maintainability 9.1 Equipments and Tools Requirement 1. Multi-meter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with an Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer. 7. Service Manual. 8. User Manual.
  • Page 39: Main Board

    18.5" LCD Color Monitor AOC 936Swa 9.2 Trouble Shooting 9.2.1 Main Board 715G3329 1 2 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 40 18.5" LCD Color Monitor AOC 936Swa No Picture No picture Measure U701 Pin2=3V U702 Pin2=1.8V Replace U701,U702 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of...
  • Page 41 18.5" LCD Color Monitor AOC 936Swa White Screen White screen Measure X401 oscillate Q301,Q302 base is waveform is normal low level? Replace X401 Check Q301,Q302 is Check reset circuit of broken,or CN302 solder? U401 is normal Check Correspondent Check Correspondent component.
  • Page 42 18.5" LCD Color Monitor AOC 936Swa 715G3244 1 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 Reinsert or check the power section Measure U404 Pin2=3.3V...
  • Page 43 18.5" LCD Color Monitor AOC 936Swa No Picture No picture Measure U404 Pin2=3.3V Replace U404 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected normally Input the sync signal of...
  • Page 44: Different Parts List

    18.5" LCD Color Monitor AOC 936Swa White Screen White screen Measure X401 oscillate Q404,Q405 base is waveform is normal low level? Replace X401 Check Q404,Q405 is Check reset circuit of broken,or CN405 solder? U401 is normal Check Correspondent Check Correspondent component.
  • Page 45: Power Board

    18.5" LCD Color Monitor AOC 936Swa 9.2.2 Power Board 1) No power Check CN902 = 14.5V Check AC line volt 110V or 220V Check AC input Check the voltage of C907 (+) Check bridge rectified circuit and F902 circuit Check start voltage for the pin3 of U901...
  • Page 46 18.5" LCD Color Monitor AOC 936Swa 2.) No Backlight Check C811(+)=14.5V Check adapter and Q803 Check ON/OFF signal Check Interface board or main board Check U801 PIN9=14.5V Change on/off circuit Check U801 PIN8 have triangle wave Change U801 Check T801 have the output of square wave at short time Check C812,C813 Check resonant wave of pin7 &...
  • Page 47: Key Board

    18.5" LCD Color Monitor AOC 936Swa 9.2.3 Key Board OSD is unstable or not working Is Keypad board connecting normally? Connect Keypad Board Is Button Switch normally? Replace Button Switch Replace Keypad Board Is Keypad board normally? Check main board...
  • Page 48: White-Balance, Luminance Adjustment

    18.5" LCD Color Monitor AOC 936Swa 10. 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 49 18.5" LCD Color Monitor AOC 936Swa 5. Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached the value G=100 6. Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached the value B=100 7.
  • Page 50: Monitor Exploded View

    18.5" LCD Color Monitor AOC 936Swa 11. Monitor Exploded View...
  • Page 51: Bom List

    2nd source H26G800P504 1A barcode H40G 58161569A USB LABEL H40G 58161596A BASIC GOLD EPA LABEL H40G18NP615 7A ID LABEL 936Swa St.Paul H41G780061534A 913Fw CKD H41G780061587A QSG 936Swa black audio H45G 77 6 PE PACKING H45G 87 4 7 PE BAG FOR BASE...
  • Page 52 18.5" LCD Color Monitor AOC 936Swa Q34G0560AED 1S0100 AOC-836 stand_front Q34G0561AED 1S0100 AOC-936 stand_rear Q37G0133011 AOC 936S HINGE 756GH9CB A1027 MAIN BOARD-CBPC9M5A1HK U402 056G1133129 IC EN25F20-100GCP 2Mb SOP-8 SMTCR-U402 100GAMM8001W11 MCU ASS'Y-056G1133129 CN402 033G3802 7B Y conn 2.0 7p CN701 033G3802 9B Y CONN 2.0 9P...
  • Page 53 18.5" LCD Color Monitor AOC 936Swa 705GQ893027 D906 ASS'Y PW9921SHD1SMT POWER BOARD FOR SMT Q90G6258 2 HEAT SINK CN511 033G3802 5 BH CONNECTOR 5PIN CN512 088G 352 2 XH USB CONN 715G2663 2 USB BOARD PCB CN501 033G3802 5B Y CONN 2.0 5P...
  • Page 54 18.5" LCD Color Monitor AOC 936Swa R605 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R609 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R805 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R806 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R807 061G0603103...
  • Page 55 18.5" LCD Color Monitor AOC 936Swa C926 065G0603104 22 CAP CHIP 0603 0.1UF K 25V X7R C612 065G0603104 22 CAP CHIP 0603 0.1UF K 25V X7R C613 065G0603104 22 CAP CHIP 0603 0.1UF K 25V X7R C805 065G0603105 17 1UF 16V Y5V...
  • Page 56 18.5" LCD Color Monitor AOC 936Swa R109 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R111 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R113 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R114 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R115 061G0402101...
  • Page 57 18.5" LCD Color Monitor AOC 936Swa R302 061G1206221 RST CHIPR 220 OHM +-5% 1/4W C107 065G0402102 32 1000PF +-10% 50V X7R C115 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C301 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R C304 065G0402104 12 CAP CHIP 0402 0.1UF 16V X7R...
  • Page 58 18.5" LCD Color Monitor AOC 936Swa FB404 071G 56V301 B CHIP BEAD FCM2012VF-301T07 bullwill FB402 071G 56V301 B CHIP BEAD FCM2012VF-301T07 bullwill FB401 071G 56V301 B CHIP BEAD FCM2012VF-301T07 bullwill FB110 071G 59G301 CHIP BEAD 300OHM FB101 071G 59K190 B...
  • Page 59 18.5" LCD Color Monitor AOC 936Swa J802 095G 90 23 JUMPER WIRE J801 095G 90 23 JUMPER WIRE J608 095G 90 23 JUMPER WIRE 715G2892 2 3 POWER BOARD PCB...
  • Page 60: Different Parts List

    PANEL M185XW01 V20C XM AUO 2nd source E750 750GLU185X1244N000 PANEL M185XW01 V20C SH AUO 2nd source H26G 800504 2A barcode H40G 18N615 4A 936Swa EU ID LABEL H40G 58161581A 936Swa WW CARTON LABEL H44G8018101 EPS 936S H44G8018201 EPS 936S H44G8018615 2A 936Swa CARTON...
  • Page 61 HARNESS 5P(PLUG)-5P(2501) 200MM 705GH934024 18.5"LCD STAND-BASE ASS'Y 750GLS185AT21CN000 PANEL LTM185AT02 802(002) FQ SEC H26G 800504 2A barcode H40G 18N615 4A 936Swa EU ID LABEL H40G 58161581A 936Swa WW CARTON LABEL H44G8018101 EPS 936S H44G8018201 EPS 936S H44G8018615 2A 936Swa CARTON...

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