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Tatung VL5A9DA, Service Manual

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Tatung VL5A9DA Service Manual Download Page 25

 

 

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Summary of Contents for VL5A9DA

Page 1: ...SERVICE MANUAL LCD Monitor VL5A9DA...

Page 2: ...ITH PRESS KEY 10 5 3 THE OPTIONAL ON MAINBOARD USING SHUTTLE 4 KEY 10 5 4 THE OPTIONAL ON MAINBOARD OR OTHER ACCESSORY USING DIFFERENT PANEL 10 5 5 SIMPLE INTRODUCTION ABOUT LM500 CHIPSET 11 5 6 SOFTW...

Page 3: ...nal Analog signal 0 7Vpp Video signal termination impedance 75 OHM 5 Scanning Frequencies Horizontal 29 KHz 61 KHz Vertical 55 Hz 75 Hz Pixel clock 80 MHz 6 Factory Preset Timing 18 User Timings 19 In...

Page 4: ...board and LCD panel The Inverter module will drive the backlight of panel The Adapter module will provides the 12V DC power 3 5 Amp to Main board and Inverter module Monitor Block Diagram 1 3 Interfa...

Page 5: ...e power is turn off 2 Please do not change variable resistance settings in MAIN BOARD they are adjusted to the most suitable value If they are changed it might happen LUMINANCE does not satisfy the wh...

Page 6: ...nsure firm grounding The connector information is as follow 15 Pin Color Display Signal Cable PIN NO DESCRIPTION PIN NO DESCRIPTION 1 RED 9 5V power from VGA card 2 GREEN 10 GND 3 BLUE 11 SYNC GND 4 G...

Page 7: ...button during 2 seconds along with plug in the AC power cord will activate the factory mode and the OSD screen will located at left top of panel I Bias Low luminance adjustment 1 Press AUTO button and...

Page 8: ...show x 313 10 y 329 10 Y 135 5 cd m2 5 Adjust the RED on OSD window until chroma 7120 indicator reached the value R 100 6 adjust the GREEN on OSD until chroma 7120 indicator reached G 100 7 adjust the...

Page 9: ...tion and re do auto configuration for all mode This function also recall 7800 color temperature if the monitor status was in Factory mode this reset function will clear Power on counter backlight coun...

Page 10: ...Power button off to on once will activate the OSD LOCK function repeat this procedure will disable OSD LOCK In OSD LOCK function all OSD function will be lock except Contrast and Brighness OSD INDEX E...

Page 11: ...TH CLIP 85A562 1 5 5 SIMPLE INTRODUCTION about LM500 chipset 1 GMZAN1 all in one chip solution for ADC OSD scalar and interpolation USE for computer graphics images to convert analog RGB data to digit...

Page 12: ...ON START Initial MCU I O Interrupt vector Ram Initial 1 POC backlight counter 2 Clr all mode value Yes Check if in Factory mode when power on press the MENU Button will be in FACTORY mode SET factory...

Page 13: ...e Out of range input not support be confirm Set mode index parameter Set change mode flag No No Yes Yes confirm the frequency Hsyn or Vsyn from IFM already been changed check the change mode flag Proc...

Page 14: ...esolution to our spec you can check the freq with CRT monitor or install our LM500 driver disk If LED in DARK state check the key Button it could be stuck by mechanical especially the POWER button NG...

Page 15: ...around 50 4KHz for input signal 31K 60 Hz and LED is green Check the bead array cap array LP201 LP212 CP201 CP212 was cold solder or bad Measured TCLK pin 141 from U200 PVS PHS pin 73 74 from U200 Is...

Page 16: ...G OK partial of Gmzan1 is good Replace GMZAN1 NG Measured PCLK pin 44 from CN201 PVS PHS pin 40 38 from CN201 Is there has any transition Pclk around 31 25MHZ PVS 60 09Hz PHS around 50 4KHz for input...

Page 17: ...8 57MHz 48 36KHz 60 09 Hz 1024x768 70 Hz 32 77MHz 56 05KHz 70 03 Hz 1024x768 72 Hz 33 97MHz 57 60KHz 71 84 Hz 1024x768 75 Hz 5 41MHz 60 24KHz 74 96 Hz NG still no screen NG OK Check CN303 pin 3 5 V th...

Page 18: ...as stuck Check NG NG If still no Led green indicator check Q102 R106 LED at keyboard cold solder or bad NG MCU no response Check U302 pin 20 20MHz and pin 44 VDD 5V and pin 10 reset 0V at normal condi...

Page 19: ...f rectangle wave that means all 3 3v is no load Gmzan1 was shut down and only MCU still working the monitor is in power saving state OK Check U304 pin 2 is a stable rectangle wave Around 150k 158kHz s...

Page 20: ...ng is not quite well Does your noise only exist in one mode only ex only at 1024x768 75 Hz other is normal OK OK Yes has extension NG interferences still exist NG NO additional extension cable That wa...

Page 21: ...bit has output PD0 PD17 PD36 PD41 the corresponding beads was LP201 LP206 2 For Chung hwa panel or other s 8 bit panel all output are available PD0 PD47 the corresponding beads was LP201 LP212 Ex HANN...

Page 22: ...he white balance process As following procedure OK Use white pattern press MENU button along with AC power plug in you will in factory mode The OSD menu will be at left top of screen press AUTO button...

Page 23: ...6 S 2 SCOPE this is to specify the requirements of the subject parts used in HANNSTAR HSD150MX41 15 inch 2 C C F L LCD monitor 3 CONNECTOR PIN ASSIGMENT 4 1 CON1 INPUT MODEL NO S5B PH SM3 TB 4 2 CON2...

Page 24: ...REMARK Input voltage Vin 10 8 12 13 2 V Input current Iin 800 1300 mA output current adj 0v min Iout min 1 7 2 2 2 7 mA FOR 1 CCFL LOAD 110K Output current adj 5 v max Iout max 5 8 6 2 6 7 mA FOR 1 CC...

Page 25: ...25 SAMPO CORPORATION TROUBLE SHOOTING OF HANNSTAR INVERTER DIVTL0048 D21 7 CIRCUIT DIAGRAM G D D D D S S S...

Page 26: ...RMHNVA 333J A 1 SMD 0603 33K 5 YAGEO 11 R11 VRMHNVA 271J A 1 SMD 0603 270 5 YAGEO 12 R12 VRMHNVA 103J A 1 SMD 0603 10K 5 YAGEO 13 R13 VRMHNVA 472J A 1 SMD 0603 4 7K 5 YAGEO 14 R14 VRMHNVA 363J A 1 SMD...

Page 27: ...U3SL220K 2 DIP 22PF 3KV 10 TDK 29 C13 VCLFBN1CY475Z A 1 SMD 1206 4 7 F 16V TDK 30 D1 DIODE VSDRLS4148 A VSDLL4148 A 1 SMD RLS4148 SMD LL4148 ROHM VISHAY 31 D2 VSDRB160L40 A VSDB140 A 1 SMD RB160L40 SM...

Page 28: ...D21 9 TROUBLE SHOOTING 9 1 NO POWER FAIL PASS FAIL PASS FAIL PASS CHECK ON FUSE F1 Vin 12 TO CHANGE F1 1 5A 63Z TO CHECK ON Q4 Q6 Vout 8 V TO CHANGE L Q4 Q3 D1 R Q5 Q6 D2 TO CHECK ON L1 L2 INPUT 9V TO...

Page 29: ...TECTION FAIL PASS 9 3 OUTPUT CURRENT ABNORMALITY FAIL PASS 1 SHORT R30 OPEN LOAD 2 TEST C14 INPUT POINT VOLTAGE Vh 1400 150V rms TO CHANGE ON PT1 OR PT2 FUNCTION TEST OK 1 CHECK ON C6 FREQUNCY CHIP IC...

Page 30: ...4 ENBALE ABNORMALITY FAIL PASS 9 5 DIMMING CONTROL ABNORMALITY FAIL PASS IF ENBALE ABNORMALITY 1 TO CHECK IC PIN 9 TURN NO HAVE 8 5 VOLTAGES TO CHANGE ON Q1 Q2 FUNCTION TEST OK IF DIMMING ABNORMALITY...

Page 31: ...S 10 INSTRUMENTS FOR TEST 1 DC POWER SUPPLY GPS 3030D 2 AC VTVM VT 181E 3 DIGITAL MULTIMERTER MODEL 34401 4 HIGHTVOLT PROB MODEL 1137A 5 SCOPE MODEL V 6545 6 AC mA METER MODEL 2016 YOKOGAWA IF TRANSFO...

Page 32: ...F L LCD monitor 3 CONNECTOR PIN ASSIGMENT 4 1 CON1 INPUT MODEL NO S5B PH SM3 TB 4 2 CON2 CON3 OUTPUT MODEL NO SM04 4 0 B BHS 1 TB PIN SYMBOL DESCRIPTION 1 Vin Input voltage 12V 2 GND GND 3 ON OFF ON...

Page 33: ...IT REMARK Input voltage Vin 10 8 12 13 2 V Input current Iin 1500 mA output current adj 0v min Iout min 2 2 2 6 3 0 mA FOR 1 CCFL LOAD 80K Output current adj 5 v max Iout max 8 1 8 5 8 9 mA FOR 1 CCFL...

Page 34: ...34 SAMPO CORPORATION TROUBLE SHOOTING OF LG INVERTER DIVTL0023 D22 7 CIRCUIT DIAGRAM...

Page 35: ...SMD 0805 1 5K 1 YAGEO 9 R13 14 VRMCNV8 133F A 2 SMD 0805 13K 1 YAGEO 10 R15 16 VRMCNV8 243F A 2 SMD 0805 24K 1 YAGEO 11 R17 18 VRMCNV8 471F A 2 SMD 0805 470 1 YAGEO 12 R27 VRMCNV8 512F A 1 SMD 0805 5...

Page 36: ...28 C14 15 VCDSEU3SL220K 2 DIP 22PF 3KV 10 TDK 29 C9 VCLRCN1EB104K A 1 SMD 0805 0 1 F 25V TDK 30 D1 2 DIODE VSDRLS4148 A VSDLL4148 A 2 SMD RLS4148 SMD LL4148 ROHM VISHAY 31 D3 4 VSDRB160L40 A VSDB140...

Page 37: ...TROUBLE SHOOTING 9 1 NO POWER FAIL PASS FAIL PASS FAIL PASS 7 CHECK ON FUSE F1 Vin 12 TO CHANGE F1 2 0A 63Z TO CHECK ON Q4 Q6 Vduot 9 V TO CHANGE L Q4 Q3 D1 R Q5 Q6 D2 TO CHECK ON L1 L2 INPUT 9V TO L...

Page 38: ...TION FAIL PASS 9 3 OUTPUT CURRENT ABNORMALITY FAIL PASS 1 SHORT R30 OPEN LOAD 2 TEST C14 INPUT POINT VOLTAGE Vh 1500 150V rms TO CHANGE ON PT1 OR PT2 FUNCTION TEST OK 1 CHECK ON C6 FREQUNCY CHIP IC CP...

Page 39: ...ENABLE ABNORMALITY FAIL PASS 9 5 DIMMING CONTROL ABNORMALITY FAIL PASS IF ENBALE ABNORMALITY 1 TO CHECK IC PIN 9 TURN NO HAVE 12 VOLTAGES TO CHANGE ON Q1 Q2 FUNCTION TEST OK IF DIMMING ABNORMALITY TO...

Page 40: ...INSTRUMENTS FOR TEST 1 DC POWER SUPPLY GPS 3030D 2 AC VTVM VT 181E 3 DIGITAL MULTIMERTER MODEL 34401 4 HIGHTVOLT PROB MODEL 1137A 5 SCOPE MODEL V 6545 6 AC mA METER MODEL 2016 YOKOGAWA IF TRANSFORMER...

Page 41: ...2 C C F L LCD monitor 3 CONNECTOR PIN ASSIGMENT 4 1 CON1 INPUT MODEL NO S5B PH SM3 TB 4 2 CON2 CON3 OUTPUT MODEL NO SM04 4 0 B BHS 1 TB PIN SYMBOL DESCRIPTION 1 Vin Input voltage 12V 2 GND GND 3 ON O...

Page 42: ...NIT REMARK Input voltage Vin 10 8 12 13 2 V Input current Iin 1500 mA output current adj 0v min Iout min 2 2 2 5 2 8 mA FOR 1 CCFL LOAD 80K Output current adj 5 v max Iout max 8 1 8 5 8 9 mA FOR 1 CCF...

Page 43: ...43 SAMPO CORPORATION TROUBLE SHOOTING OF CPT INVERTER DIVTL0026 D22 7 CIRCUIT DIAGRAM...

Page 44: ...14 VRMCNV8 432F A 2 SMD 0805 4 3K 1 YAGEO 10 R15 16 VRMCNV8 473F A 2 SMD 0805 47K 1 YAGEO 11 R17 18 VRMCNV8 471F A 2 SMD 0805 470 1 YAGEO 12 R21 22 VRMCNV8 203F A 2 SMD 0805 20K 1 YAGEO 13 R27 VRMCNV8...

Page 45: ...0K 2 DIP 22PF 3KV 10 TDK 30 C9 VCLRCN1EB104K A 1 SMD 0805 0 1 F 25V TDK 31 C20 VCLFCN1CY225Z A 1 SMD 0805 2 2 F 25V TDK 32 D1 2 DIODE VSDRLS4148 A VSDLL4148 A 2 SMD RLS4148 SMD LL4148 ROHM VISHAY 33 D...

Page 46: ...9 TROUBLE SHOOTING 9 1 NO POWER FAIL PASS FAIL PASS FAIL PASS CHECK ON FUSE F1 Vin 12 TO CHANGE F1 2 0A 63Z TO CHECK ON Q4 Q6 Vduot 9 V TO CHANGE L Q4 Q3 D1 R Q5 Q6 D2 TO CHECK ON L1 L2 INPUT 9V TO L...

Page 47: ...TION FAIL PASS 9 3 OUTPUT CURRENT ABNORMALITY FAIL PASS 1 SHORT R30 OPEN LOAD 2 TEST C14 INPUT POINT VOLTAGE Vh 1750 150V rms TO CHANGE ON PT1 OR PT2 FUNCTION TEST OK 1 CHECK ON C6 FREQUNCY CHIP IC CP...

Page 48: ...ENABLE ABNORMALITY FAIL PASS 9 5 DIMMING CONTROL ABNORMALITY FAIL PASS IF ENBALE ABNORMALITY 1 TO CHECK IC PIN 9 TURN NO HAVE 12 VOLTAGES TO CHANGE ON Q1 Q2 FUNCTION TEST OK IF DIMMING ABNORMALITY TO...

Page 49: ...0 INSTRUMENTS FOR TEST 1 DC POWER SUPPLY GPS 3030D 2 AC VTVM VT 181E 3 DIGITAL MULTIMERTER MODEL 34401 4 HIGHTVOLT PROB MODEL 1137A 5 SCOPE MODEL V 6545 6 AC mA METER MODEL 2016 YOKOGAWA IF TRANSFORME...

Page 50: ...START CIRCUIT POWER MOSFET LIMIT POWER CKT PHOTO COUPLING FEEDBACK CKT OVER VOLTAGE PROTECTION CKT RECTIFIER FILTER CKT TRANSFORMER PWM CONTROL IC 6 C ADAPTER MODULE Trouble shooting chart The followi...

Page 51: ...place U01 SCR e EYE inspection polar of C04 is correct or wrong polar insertion a Replace U04 Photo coupler b Replace U05 TL431 c Replace U06 NPN945 d Replace Q01 PNP733 Check the limitation Resistor...

Page 52: ...52 III ADAPTER SCHEMATIC Part no 80AL15 2 LI...

Page 53: ...C 104P B 02 Bead R 10 CFR 4 7K C 10 CC 104P B 04 Bead R 11 CFR 4 7K C 11 CC 104P B 05 Bead R 12 CFR 3 9K C 12 CC 103P L 03 Bead R 13 CFR 47K C 13 CC 104P BD 01 BRIDGE KBP206 R 14 CFR 1K C 14 CC 472P V...

Page 54: ...l components needed All color depths up to 24 bits pixel are supported High Quality Advanced Scaling Fully programmable zoom Independent horizontal vertical zoom Enhanced and adaptive scaling algorith...

Page 55: ...for ADC analog blocks that are shared by all three channels Includes bandgap reference master biasing and full scale adjust Must be bypassed with 0 1uF capacitor to pin 82 ADC_GNDA 83 Reserved For int...

Page 56: ...B9 I O Multi Function Bus 9 One of twelve multi function signals MFB 11 0 Also used as HDATA3 in a 4 bit host interface configuration 104 MFB8 I O Multi Function Bus 8 One of twelve multi function sig...

Page 57: ...eserved For testing purposes only Do not connect 136 PLL_SVDDA Analog power for the Source DDS DAC Must be bypassed with a 0 1uF capacitor to pin 134 PLL_SGNDA 137 DAC_SVDDA Analog power for the Sourc...

Page 58: ...6 OB4 25 PD33 O OB5 OB3 26 PD32 O OB4 OB2 27 PD31 O OB3 OB1 28 PD30 O OB2 OB0 29 PD29 O OG7 OG5 31 PD28 O OG6 OG4 32 PD27 O OG5 OG3 34 PD26 O OG4 OG2 35 PD25 O OG3 OG1 36 PD24 O OG2 OG0 37 PD23 O OR7...

Page 59: ...ontrol the power to a flat panel Table 5 Test Pins PIN Name I O Description 3 PSCAN I Enable automatic PCB assembly test When this input is pulled high the automatic PCB assembly test mode is entered...

Page 60: ...D ADC RGNDA TCLK R1 R R1 R RVDDA R1 R R1 R R1 R Video Connector C1 C L2 Vsync C2 C L1 Hsync CVDD Red Blue Green On Screen Display Controller MPU with EPROM R G B OSD FSW OSD FSW OSD CLK OSD HREF OSD V...

Page 61: ...anel Hsync frequency Input Hsync frequency Panel Vsync frequency Input Vsync frequency This mode is used when the input resolution is the same as the panel resolution and the input data clock frequenc...

Page 62: ...cy Destination Htotal register value Panel Vsync frequency DCLK frequency Dest Htotal register value Dest Vtotal register value This mode is used when the input is changing or not available The OSD ma...

Page 63: ...om the TCLK input is used as a reference clock The clock recovery circuit adjusts the SCLK period so that the feedback pulse generated every SCLK period multiplied by the Source Horizontal Total value...

Page 64: ...cuit The difference is that DCLK is locked to SCLK while SCLK is locked to the Hsync input DCLK frequency divided by N is locked to SCLK frequency divided by M The value M and N are calculated and pro...

Page 65: ...ines a capture window and sends the input data to the data path block The figure below shows how the window is defined For the horizontal direction it is defined in SCLKs equivalent to a pixel count F...

Page 66: ...chip has three ADC s analog to digital converters one for each color red green and blue Table 10 summarizes the characteristics of the ADC Table 10 ADC Characteristics MIN TYP MAX NOTE RGB Track Hold...

Page 67: ...he IRQ generating conditions are programmable 2 4 1 Source Timing Measurement When it receives the active CRT signal R G B and Sync signals the Source Timing Measurement unit begins measuring the hori...

Page 68: ...eneration Conditions IRQ Event Remark Timing Event One of the three events Leading edge of Vsync input Panel line count the line count is programmable Every 10ms Only one event may be selected at a ti...

Page 69: ...quick brightness adjust An offset range of plus 127 4 to minus 127 4 is available 2 5 4 Panel Data Dither For TFT panels that have fewer than eight bits for each R G B input the gmZAN1 provides ordere...

Page 70: ...is programmable from 2 mA to 20mA in increments of 2 mA Drive strength should be programmed to match the load presented by the cable and input of the panel Values shown are based on a loading of 20pF...

Page 71: ...Vertical size in TFT b Vsync width and display position in TFT c Horizontal size in TFT d Hsync width in TFT t10 PDE t8 t12 RGB data from data paths t7 t9 PHS t11 Panel Background Color Displayed PCL...

Page 72: ...cur and disable the panel permanently The gmZAN1 has a built in power sequencer Power Manager that prevents this kind of damage The Power Manager controls the power up down sequences for LCD panels wi...

Page 73: ...tate until the internal TFT_Enable signal controlled by Panel Control register is disabled The panel can be disabled through either an API call under program control or automatically by the gmZAN1 to...

Page 74: ...entered when a pull down resistor is not connected to MFB6 pin number 106 4 bit serial interface mode Same as gmB120 compatible mode with the addition of three data bits so that four data bits are tr...

Page 75: ...the microcontroller and the gmZAN1 the microcontroller always acts as an initiator while the gmZAN1 is always the target The following timing diagram describes the protocol of the serial channel of t...

Page 76: ...4 Data 11 8 Thus in this mode the HDATA pin carries Command0 Address2 Address6 Data0 Data4 and Data8 On the gmZAN1 reference design board the microcontroller toggles the HCLK and HDATA lines under pro...

Page 77: ...programmable with an address resolution of 16 8 bits as the top bits of the 12 bit SRAM address The character code is a 12 bit value used as follows D6 0 font map select this is the top seven bits of...

Page 78: ...The shadow does not change the intensity of any panel background color over which it may be located The border and shadow are mutually exclusive only one may be selected at a time The OSD window is n...

Page 79: ...t Current 10 uA 10 uA PVDD operating supply current 0 mA 20 mA pad 10pF 2 CVDD operating supply current 0 mA 500 mA 3 NOTE 1 5V Tolerent TTL Input pads are as follows CRT Interface HSYNC pin 150 VSYNC...

Page 80: ...ONT BEZEL 85A548 15A5683 HANNSTAR 750ALCDX41 1 34A785 33A4095 KEPC560EKMN POWER LENS 33A3782 SHIELD 85A580 79AL15 6 S 85A577 Q1A1030 12 128X4 34A677 80AL15 2 L1 34A787 EARTH CLIP 85A562 TURN BASE 34A7...

Page 81: ...401 927 03 OWNER S MANUAL 44A 3137 1 WOODEN FLAT PALLETS 44A 3203 1 EPS L 44A 3203 2 EPS R 44A 3203 6 CARTON 45A 113 1 PE BAG 45A 114 1 PE BAG 45A 116 1 CLIP BAG 70A L15 1 AOC DRIVE DISK 79A L15 2 S I...

Page 82: ...03 000 CHIP 0 OHM 1 16W R202 61A 0603 000 CHIP 0 OHM 1 16W R203 61A 0603 000 CHIP 0 OHM 1 16W R207 61A 0603 000 CHIP 0 OHM 1 16W R208 61A 0603 000 CHIP 0 OHM 1 16W R317 61A 0603 000 CHIP 0 OHM 1 16W R...

Page 83: ...103 32 CHIP 0 01UF 50V C233 65A 0603 103 32 CHIP 0 01UF 50V C234 65A 0603 103 32 CHIP 0 01UF 50V C251 65A 0603 103 32 CHIP 0 01UF 50V C201 65A 0603 104 12 CHIP 0 1UF 16V C202 65A 0603 104 12 CHIP 0 1...

Page 84: ...P205 71A 56A 121 8T CHIP BEAD ARRAY 120 OHM LP206 71A 56A 121 8T CHIP BEAD ARRAY 120 OHM LP207 71A 56A 121 8T CHIP BEAD ARRAY 120 OHM LP208 71A 56A 121 8T CHIP BEAD ARRAY 120 OHM LP209 71A 56A 121 8T...

Page 85: ...02 103 52T 10K OHM 5 1 6W R105 61A 602 103 52T 10K OHM 5 1 6W R107 61A 602 103 52T 10K OHM 5 1 6W R108 61A 602 103 52T 10K OHM 5 1 6W R106 61A 602 221 52T 220 OHM 5 1 6W C101 65A 450 104 7T 0 1uF 80 2...

Page 86: ...1500V 30K 50KHz Current 9mA Main board power system LM2596S 5 12V to 5V 3A SPEC 5V To CPU Eeprom 24c21 control inverter on off 860mA when Cable not Connected 841mA when Normal operation AIC1084 5V to...

Page 87: ...87...

Page 88: ...88 10 PCB LAYOUT...

Page 89: ...249 R204 R202 C234 R208 C231 D201 C236 R212 R210 R214 R218 R213 R209 R211 C235 D200 VCC GND VCLK SCL SDA NC NC NC U203 C244 D209 D211 D208 R217 R216 R220 R219 CN200 R327 R227 C251 D210 NC SCL SDA VSS2...

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