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                        19" LCD Color Monitor                                      AOC 919Pz&919Sz&919Vz 
Service 
Service 
Service                                                             
 
 
                                                                                         
 
919Pz               919Sz&919Vz          
                      
                           
 
Horizontal Frequency 
                                                                                     30-80 KHz 
Table of Contents 
Des
                    
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                          Revision List  Version Release Date Revision History Customer Model TPV Model Name  T9AHMJDBK1K3DN  919Pz  T9AHMJDMKASDDN  T9AHMJDBK1KPAN  A00 Sep.16.2010 Initial release 919Sz  T9AHMJDMK1SDAN  T9AHMJDBK1K2DN  919Vz  T9AHMJDLK13ADN  A01 Nov.08.2010 Add new model 919Vz T9AHMJDTKA1RDN  A02 Dec.02.2010 Add new model 919Vz T9AHMJDLK13ADN  919Pz T9AGMJDBKNK3DN  A03 Dec.14.2010 Add new models 919Sz T9AGMJDBKMKPAN  919Vz T9AGMJDBKMK2DN  A04 Jan.18.2011 Add new model  919Vz T9AGMJDEKM6ADN  A05 Jan.27.
                    
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                          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.  It is important to note that this manual contains various CAUTIONS and NOTICES w
                    
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                          1. Monitor Specifications  Model number  919Pz Driving system  TFT Color LCD   Viewable Image Size 48.3cm diagoanl  Pixel pitch  0.294mm(H) x 0.294mm(V)  LCD Panel   Video  R, G, B Analog lnterface & Digital Interface  Separate Sync.  H/V TTL  Display Color  16.7M Colors   Dot Clock  135 MHz   Horizontal scan range  30 kHz - 80 kHz  Horizontal scan Size(Maximum) 376.32mm   Vertical scan range  55 Hz - 75 Hz   Vertical scan Size(Maximum)  301.056mm   Optimal preset resolution  1280 x 1024 (60 H
                    
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                          Model number  919Sz&919Vz Driving system  TFT Color LCD   Viewable Image Size 48.3cm diagoanl  Pixel pitch  0.294mm(H) x 0.294mm(V)  LCD Panel   R, G, B Analog lnterface (for 919Sz)  Video   R, G, B Analog lnterface & Digital Interface(for 919Vz) Separate Sync.  H/V TTL  Display Color  16.7M Colors   Dot Clock  135 MHz   Horizontal scan range  30 kHz - 80 kHz  Horizontal scan Size(Maximum)  376.32mm   Vertical scan range  55 Hz - 75 Hz   Vertical scan Size(Maximum)  301.056mm   Optimal preset 
                    
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                          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 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        CCFL Drive.  Flat Panel and   CCFL backlight     Power Board  RS232 Connector  Main Board    (Include: adapter, inverter, audio)  For white balance    adjustm
                    
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                          3. Operating 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.  * The power cord should be connected.  * Press the power button to turn on the monitor. The power indicator will light up.   3.2 Control Buttons  For 919Pz      1 Source(Auto) / Exit   2 Eco mode / -   3. Volume / +  4. Menu / Enter  5.
                    
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                          For 919Sz&919Vz      1 Source(Auto) / Exit   2 Eco mode / -   3. Volume / +  4. Menu / Enter  5. Power Button & Indicator   8                                                                                                                                                                                                                                                                                                                                                                                     
                    
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                          3.3 OSD Menu  • Press the MENU-button to activate the OSD window.   • 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.Once the desired function is highlighted, press MENU-button to activate it.   • Press+ or - to change the settings of the selected function. To exit and save, select the exit function. If you  want
                    
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                          Function Control Illustration  Luminance  Adjust Range  Description   Brightness  0-100  Backlight Adjustment   Contrast  0-100  Contrast from Digital-register.     Standard Mode   Standard         Text Mode  Text         Eco mode   Internet Mode  Internet               Game Mode   Game           Movie Mode  Movie         Sports Mode  Sports      Gamma1 Adjust to Gamma1  Gamma   Gamma2 Adjust to Gamma 2  Gamma3 Adjust to Gamma 3   Off Disable dynamic contrast ratio      DCR   On Enable dynamic
                    
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                          Adjust the horizontal position of  V.Position  0-100   the picture.   Color Temp.     Recall Warm Color Temperature  Warm   from EEPROM.   6500K  Recall Normal Color  Normal   Temperature from EEPROM.   7300K  Recall Cool Color Temperature  Cool   from EEPROM.   9300K      Recall SRGB Color Temperature  sRGB     from EEPROM.   Red Red Gain from Digital-register   User  Green Green Gain Digital-register.   Blue Blue Gain from Digital-register   Color Boost      Disable or Enable Full Enhance  F
                    
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                          OSD  Timeout  5-120 Adjust the OSD Timeout   Transparence 0-100 Adjust the transparence of OSD Language  Select the OSD language     Extra      Auto Select to Auto Detect input signal Select Analog Sigal Source as  Analog  Input  Input Select  Select Digital Sigal Source as  Digital  Input  Auto Config  yes or no  Auto adjust the picture to default  Select wide or 4:3 format for    Image Ratio wide or 4:3  display   DDC-CI yes or no Turn ON/OFF DDC-CI Support  Select timing to turn off the  Of
                    
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                          4. Input/Output Specification  4.1 Input Signal Connector  Analog connector      Pin Number 15-Pin Side of the Signal Cable 1 Video-Red  2 Video-Green  3 Video-Blue  4 N.C.  5 Detect Cable  6 GND-R  7 GND-G  8 GND-B  9 +5V  10 Ground  11 N.C.  12 DDC-Serial data  13 H-sync  14 V-sync  15 DDC-Serial clock    DVI connector (FOR 919Pz&919Vz)    Pin No. Signal Name Pin No. Signal Name Pin No. Signal Name  1 TMDS Data 2- 9 TMDS Data 1- 17 TMDS Data 0-  2 TMDS Data 2+ 10 TMDS Data 1+ 18 TMDS Data 0+
                    
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                          4.2 Factory Preset Display Modes  Stand Resolution  Horizontal Frequency(kHz) Vertical Frequency(Hz)  VGA 640×480@60Hz DMT 31.469 59.940  Mac-mode 640×480@67Hz MAC 35.000 66.667  VGA 640×480@72Hz DMT 37.861 72.809  VGA 640×480@75Hz DMT 37.500 75.000  Dos-mode 720×400@70Hz DOS 31.469 70.087  SVGA 800×600@56Hz DMT 35.156 56.250  SVGA 800×600@60Hz DMT 37.879 60.317  SVGA 800×600@72Hz DMT 48.077 72.188  SVGA 800×600@75Hz DMT 46.875 75.000  Mac-mode 832×624@75Hz MAC 49.725 74.500  XGA 1024×768@60Hz
                    
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                          4.3 Panel Specification   4.3.1 General Features  HannStar Display model HSD190MEN4-A* is a color active matrix thin film transistor (TFT) liquid crystal display  (LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, the  voltage reference, common voltage, DC-DC converter, column, and row driver circuit. This TFT LCD has a 19-inch  diagonally measured active display area with SXGA resolution (1024 vertical by 1280 horizontal pixel array).  4.3.
                    
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                          Back-Light Unit    4.3.4 Optical Characteristics            16                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                    
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                          5. Block Diagram  5.1 Main Board  DVI for 919Pz&919Vz          14.31818MHZ  Panel Interface   (X401)  (CN301)              Scalar IC TSUMO58QWHL-LF    FLASH ROM    Key Control Interface   MX25L2026MI  (Include ADC, OSD, MCU)  (CN401)     (U402)      (U401)            D-Sub Connector DVI Connector    (CN101) (CN102)      17                                                                                                                                                                              
                    
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                          5.2 Power Board      AC input  Bridge  16V  Rectifier    Transformer  EMI filter  Rectifier  diodes  and Filter  5V       Start Resistor  (R904,R905)      Feedback  PWM Control     Circuit  Power Switch (IC901)    (Q901)      Photo coupler   (IC903)        16V  Output Transformer MOSFET    (PT801)  Circuit (Q805, Q806)      Lamp      5V PWM Control    Feedback ON/OFF TA9687GN    Circuit  DIM  (IC801)    PID        Audio Power Amplifier CN601 (Phone Jack)  +5V APA2069JITUL  CN602  (IC601)    18
                    
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                          6. Schematic  6.1 Main Board  715G3329  1  2  DVI for 919Pz&919Vz    FB102 100OHM1/16W VGA_B+ 1 2 R105 C102 DSUB_B+ 5 BEAD 47N 16V H_Sync R102 0R05 1/10W R103 1K1/16W R108 C105 DSUB_H 5 V_Sy nc R104 1K1/16W 5pF 50V DSUB_V 5 75OHM1/16W 100OHM1/16W R106 R107 C103 C104 VGA_B- R109 C106 DSUB_B- 5 47N 16V 2.2K1/16W 2.2K1/16W 22P 50V 22P 50V U104 470OHM1/16W AZC199-04S ESD_VCC R110 C107 DSUB_SOG 5 DSUB_SCL 1 6 H_Sy nc FB103 1000pF 50V I/O1 I/O4 2 5 GNDVDD CN101 DSUB_SDA 3 4 V_Sy nc VGA_G+ 1 2 R111 C
                    
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                          CN301 PA[0..9] PB[0..9] 5 PA[0..9] 5 PB[0..9] PB0 LVB3P LVB0M RXO0- 30 PA0 LVA3P PB1 LVB3M CN302 LVB0P RXO0+ 29 PA1 LVA3M PB2 LVBCKP LVB1M RXO1- 28 PA2 LVACKP PB3 LVBCKM LVB1P RXO1+ 27 PA3 LVACKM PB4 LVB2P 29 30 LVB2M RXO2- 26 PA4 LVA2P PB5 LVB2M 27 28 LVB2P RXO2+ 25 PA5 LVA2M PB6 LVB1P LVB0M RXO0- 25 26 RXO0+ LVB0P 24 PA6 LVA1P PB7 LVB1M LVB1M RXO1- 23 24 RXO1+ LVB1P LVBCKM RXOC- 23 PA7 LVA1M PB8 LVB0P LVB2M RXO2- 21 22 RXO2+ LVB2P LVBCKP RXOC+ 22 PA8 LVA0P PB9 LVB0M LVBCKM RXOC- 19 20 RXOC+