HSD HQ191D Service Manual Download Page 39 | Manualshive

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19" LCD Color Monitor

HSD HQ191D

39

White Screen

White screen

Measure C717 (+) =5V

Checks Q704, Q706,
Q708 are broken

Check CN101 connector or
solder normal?

Replace CN101 or
re-solder

Replace Q704,
Q706, Q708

NG

NG

Replace X401

OK

http://www.wjel.net

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Summary of Contents for HQ191D

Page 1: ... 1 General Instructions 7 3 2 Control Button 7 3 3 Adjusting the Picture 8 4 Input Output Specification 13 4 1 Input Signal Connector 13 4 2 Factory Preset Display Modes 14 4 3 Panel Specification 15 5 Block Diagram 17 5 1 Software Flow Chart 17 5 2 Electrical Block Diagram 19 6 Schematic 21 6 1 Main Board 21 6 2 Power Board 26 6 3 Audio Board 28 7 PCB Layout 29 7 1 Main Board 29 7 2 Power Board 3...

Page 2: ...19 LCD Color Monitor HSD HQ191D 2 Revision List Revision Date Revision History TPV Model A00 Jan 22 2007 Initial release T96HM6NBD6HZAE h t t p w w w w j e l n e t ...

Page 3: ... may create shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from AOC AOC assumes no liability express or implied arising out of any unauthorized modification of design Servicer assumes all liability FOR PRODUCTS CO NTAINING LASER DANGER Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM CAUTION Use of co...

Page 4: ...19 LCD Color Monitor HSD HQ191D 4 1 Monitor Specifications h t t p w w w w j e l n e t ...

Page 5: ... 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 AC IN 100V 240V Power board Include adapter inverter Flat Panel and CCFL backlight Main board RS232 Connector For white balance adjustment in factory mode HOST Computer CCFL Drive Video signal DDC Audio board Key board h t t p w w w w j e...

Page 6: ...19 LCD Color Monitor HSD HQ191D 6 Dimensions h t t p w w w w j e l n e t ...

Page 7: ...confirmation or 2 Exit OSD menu when in volume OSD status 6 Auto Adjust button When OSD menu is in off status press this button to activate the Auto Adjustment function The Auto Adjustment function is used to optimized the H Position V Position Clock and Focus NOTES Do not install the monitor in a location near heat sources such as radiators or air dusts or in a place subject to direct sunlight or...

Page 8: ...s or to select the desired function 3 Press the MENU button to select the function that you want to adjust 4 Press or to change the settings of the current function 5 To exit and save select the exit function or leave the monitor alone for 10 seconds If you want to adjust any other function repeat steps 2 4 h t t p w w w w j e l n e t ...

Page 9: ...19 LCD Color Monitor HSD HQ191D 9 h t t p w w w w j e l n e t ...

Page 10: ...19 LCD Color Monitor HSD HQ191D 10 h t t p w w w w j e l n e t ...

Page 11: ...19 LCD Color Monitor HSD HQ191D 11 h t t p w w w w j e l n e t ...

Page 12: ...19 LCD Color Monitor HSD HQ191D 12 h t t p w w w w j e l n e t ...

Page 13: ...19 LCD Color Monitor HSD HQ191D 13 4 Input Output Specification 4 1 Input Signal Connector h t t p w w w w j e l n e t ...

Page 14: ...19 LCD Color Monitor HSD HQ191D 14 4 2 Factory Preset Display Modes h t t p w w w w j e l n e t ...

Page 15: ...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 WXGA resolution 900 vertical by 1440 horizontal pixel array 4 3 1 Display Characteristics h t t p w w w w j e l n e t ...

Page 16: ...19 LCD Color Monitor HSD HQ191D 16 4 3 2 Optical Characteristics 4 3 3 Parameter guide line for CCFL Inverter TFT LCD Module Back Light Unit h t t p w w w w j e l n e t ...

Page 17: ...19 LCD Color Monitor HSD HQ191D 17 5 Block Diagram 5 1 Software Flow Chat 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 h t t p w w w w j e l n e t ...

Page 18: ...t it to green color Scalar initializes 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are there any signals coming 13 Does the scalar send out an interrupt request 14 Wake up the scalar 15 Are there any signals coming from analog port 16 Display No connection Check Signal Cable message And go into standby mode after the message disappear 17 Program the scalar to b...

Page 19: ... 5 2 1 Main Board LCD interface CN101 Scalar TSUM56AK Include MCU ADC OSD U401 D Sub Connector CN405 H sync V sync RGB Crystal 14 318MHz X401 EEPROM M24C02 U404 EEPROM 24LC16B U403 DVID Connector CN406 RGB DCLK DCLK EEPROM M24C02 U405 h t t p w w w w j e l n e t ...

Page 20: ...cuit R905 Transform er Switching circuit PWM control IC MOSFET IC901 Rectifier and filter D920 D922 Feedback circuit IC902 IC921 12V 5V Start circuit On off control PWM control IC Push pull circuit LC resonant Lamp Dimming control Feedback circuit To main board 12V OVP OCP circuit h t t p w w w w j e l n e t ...

Page 21: ...V DDC_WP LVDS OUTPUT XGA SXGA B5 5 PANEL INTERFACE VLCD PA 0 7 PA 8 13 ESP PA 14 19 PB 0 5 PB 6 11 GPO 0 4 OSP VLCD_12V PB 12 23 B4 4 SCALER RIN GIN SOG BIN GNDR GNDG GNDB HSYNC VSYNC Adj_BACKLIGHT VCC1 8 Vcc3 3 VCTRL PA 0 7 PA 8 13 R R G G B B CLK CLK DDCD_SDA DDCD_SCL DET_DVI DDCA_SDA DDCA_SCL DET_VGA on_BACKLIGHT on_Panel 5V PA 14 19 PB 0 5 PB 6 11 GPO 0 4 ESP OSP on_PANEL_12V PB 12 23 12V DDC_...

Page 22: ...S3904 R735 4 7K 1 16W Q704 AO3401L GND R733 NC R734 10K 1 16W R727 10K 1 16W GND C701 NC U701 NC LT1117 18 VI 3 VO 2 GND 1 VO 4 5V C703 100uF 25V 3V3 C704 NC SOT 223 C713 0 1uF BL_ADJ U702 AIC1084 33PM VIN 3 ADJ 1 VOUT 2 VOUT 4 3V3 5V R723 51K 1 16W D704 SMAL140 GND R724 51K GND C722 NC 0 1uF Q709 PMBS3904 R736 NC 10K R737 NC 4K7 GND C714 0 1uF 10 20 2005 For Panel Protection Add Q708 Q709 R733 R7...

Page 23: ... 3 1 2 C432 0 047uF R447 1K 1 16W R436 56 1 16W R451 10K 1 16W D422 BAV99 3 1 2 FB409 120 OHM D410 MLL5232B 5 6V R445 100 1 16W D417 BAV99 3 1 2 R449 2 2K 1 16W D413 BAV70 3 1 2 D418 BAV99 3 1 2 D416 LL5232B 5 6V 5 R470 1K 1 16W C445 0 1uF R446 1K 1 16W R438 75 1 16W R444 10K 1 16W C439 0 1uF R441 100 1 16W R453 100 1 16W D420 BAV99 3 1 2 D405 BAV99 3 1 2 D407 BAV70 3 1 2 R435 56 1 16W CN406 JACK ...

Page 24: ...GPIO_P22 75 GPIO_P23 74 AVDD_PLL 52 AVDD_MPLL 34 AVDD_MPLL 4 VDDP 95 VDDP 103 VDDP 115 VDDC 117 AVDD_ADC 60 GND 13 C423 22pF U406 ASM810MEURF T GND 1 RST 2 VCC 3 R486 NC PB11 X401 14 318MHz Volume C421 22pF C616 NC ESP 5 PA 0 7 5 R487 10K 1 16W PA 8 13 5 PB 0 5 5 GPO 0 4 5 PB 12 23 5 OSP 5 R488 NC PA 14 19 5 PB 6 11 5 R 3 R 3 WP G 3 G 3 B 3 B 3 R407 NC CLK 3 CLK 3 R410 NC OUT L VPLL VDVI Q402 PMBS...

Page 25: ...e 1 Table 1 PA 8 13 X X X X X X X X V V V V V V V V PB 0 5 STV2 NC Innolux 17 STH NC NC GPOO2 0R 3 3V 0R 3 3V 3 3V NC 0R GPOO0 GPOO1 RXE2 LVA2M LVACKM RXEC RXE3 LVA3M LVB2M RXO2 RXO0 LVB0M RXO3 LVB3M RXE1 LVA1M RXO1 LVB1M LVBCKM RXOC RXE0 LVA0M RXOC LVBCKP RXE2 LVA2P RXO0 LVB0P RXE0 LVA0P RXO1 LVB1P RXO3 LVB3P RXEC LVACKP RXO2 LVB2P RXE1 LVA1P RXE3 LVA3P PB23 BB3N PB20 BB2P PB22 BB3P PB21 BB2N Tit...

Page 26: ... 1000uF 16V C913 220pF 50V ZD922 RLZ5 1B 1 2 C911 22uF 50V LD7575 IC901 LD7575 RT 1 CS 3 GND 4 N C 7 COMP 2 OUT 5 VCC 6 HV 8 R926 33K 1 10W 1 R901 330K 1 8W R910 7R5 1 8W R900 330K 1 8W CN902 CONNECTOR 1 2 3 4 5 6 7 8 9 10 D900 BA159GPT C930 0 1uF 50V C928 0 1uF 50V R902 330K 1 8W C921 0 001uF 500V R911 100K 1 10W 1 C925 470UF 25V C927 470UF 25V R922 470 1 4W D920 SBT150 10LS 1 2 3 C910 1500pF 1KV...

Page 27: ...10W R805 470 1 8W N C C814 1000P 50V Q801 PMBS3904 3 2 1 R810 100K 1 10W N C R833 75K 1 10W R815 100K 1 10W R825 560 1 10W PT801 80GL17T 36 DN 5 3 7 4 1 8 R808 10K 1 4W C816 15PF 6KV Q803 PMBS3904 3 2 1 R816 1M 1 10W R842 10 1 10W CN801 33G8021 2D U 1 2 R814 56K 1 10W R817 33K 1 10W 1 Q802 PMBS3904 3 2 1 C812 1500PF 50V PT802 80GL19T 36 DN 5 3 7 4 1 8 R829 15 1 8W R828 15 1 8W R836 1K 1 10W R807 2...

Page 28: ... 20K 1 16W CN201 PHONEJACK 1 2 3 4 5 C213 0 1uF U201 E TDA7496L GND 1 GND 2 GND 3 INL 4 VAROUT_L 5 VOLUME 6 VAROUT_R 7 NC 8 INR 9 SVR 10 STBY 11 MUTE 12 GND 13 OUTR 14 VS 15 VS 16 OUTL 17 GND 18 GND 19 GND 20 C203 0 1uF R207 1K 1 16W R210 20K 1 16W R208 1K 1 16W C206 0 47uF 25V R201 18K 1 16W 12V CN204 NC CONN 1 2 3 C211 0 01uF C212 0 01uF C205 470uF 16V C207 470uF 16V GND C208 470uF 16V OUT_R OUT...

Page 29: ...19 LCD Color Monitor HSD HQ191D 29 7 PCB Layout 7 1 Main Board h t t p w w w w j e l n e t ...

Page 30: ...19 LCD Color Monitor HSD HQ191D 30 h t t p w w w w j e l n e t ...

Page 31: ...19 LCD Color Monitor HSD HQ191D 31 7 2 Power Board h t t p w w w w j e l n e t ...

Page 32: ...19 LCD Color Monitor HSD HQ191D 32 h t t p w w w w j e l n e t ...

Page 33: ...19 LCD Color Monitor HSD HQ191D 33 h t t p w w w w j e l n e t ...

Page 34: ...19 LCD Color Monitor HSD HQ191D 34 7 3 Key Board h t t p w w w w j e l n e t ...

Page 35: ...19 LCD Color Monitor HSD HQ191D 35 7 4 Audio Board h t t p w w w w j e l n e t ...

Page 36: ...Maintainability 8 1 Equipments and Tools Requirement 1 Voltmeter 2 Oscilloscope 3 Pattern Generator 4 DDC Tool with an IBM Compatible Computer 5 Alignment Tool 6 LCD Color Analyzer 7 Service Manual 8 User Manual h t t p w w w w j e l n e t ...

Page 37: ...he picture is normal Please reinsert and make sure the AC of 100 240 is normal Measure U702 Vout 3 3V Q702 Vc 1 8V Reinsert or check the Adapter Inverter section X401 oscillate waveforms are normal Check CN701 or replace U702 Q702 Replace U401 Replace U401 Replace X401 OK OK OK NG NG NG NG NG h t t p w w w w j e l n e t ...

Page 38: ...eplace U401 Replace X401 Measure U702 Vout 3 3V Q702 Vc 1 8V Check Correspondent component Replace U401 X401 oscillate waveform is normal Replace U702 Q702 OK OK OK OK OK NG NG NG NG Check reset circuit of U401 is normal Check HS VS from CN405 is normal Replace X401 Check Correspondent component NG NG OK h t t p w w w w j e l n e t ...

Page 39: ...White screen Measure C717 5V Checks Q704 Q706 Q708 are broken Check CN101 connector or solder normal Replace CN101 or re solder Replace PANEL Replace Q704 Q706 Q708 NG NG NG Check X401 OK Replace U401 Replace X401 NG OK OK h t t p w w w w j e l n e t ...

Page 40: ...ine volt 120V or 220V Change F901 Check BD901 Q900 IC901 Check the voltage of C907 Check bridge retified circuit Check start voltage for the Pin6 of IC901 Change IC901 OK Check the auxiliary voltage is smaller than 20V OK NG No power NG NG OK NG Check D920 D22 ZD920 Check IC902 IC921 Check Q900 OLP circuit NG OK h t t p w w w w j e l n e t ...

Page 41: ...wave Check the output of PT801 PT802 Check ON OFF signal Check IC801 PIN2 5V Check adapter circuit Check Interface board OK OK NG NG Check Q801 Q802 Q803 NG NG OK Check Q805 Q806 have the output of square wave at short time Check IC801 Check Q805 Q806 PT801 PT802 Check C816 or C825 OK OK OK NG NG Change PT801 or PT802 Check connecter lamp h t t p w w w w j e l n e t ...

Page 42: ...ard OK OK OSD is unstable or not working Is Keypad board connecting normally Is Button Switch normally Is Keypad board normally Check main board Connect Keypad Board Replace Button Switch Replace Keypad Board NG NG NG OK h t t p w w w w j e l n e t ...

Page 43: ...hroma 7120 indicator reached the value G 100 6 Adjust the BLUE of color 1 on factory window until chroma 7120 indicator reached the value B 100 7 Repeat above procedure item 4 5 6 until chroma 7120 RGB value meet the tolerance 100 5 B Adjust 6500 color temperature 1 Switch the chroma 7120 to RGB Mode with press MODE button 2 Switch the MEM channel to Channel 4 with up or down arrow on chroma 7120 ...

Page 44: ...19 LCD Color Monitor HSD HQ191D 44 10 Monitor Exploded View h t t p w w w w j e l n e t ...

Page 45: ...SCREW D1G1730 6128 CR3 SCREW M3x6 M1G 130 5120 SCREW M3X5 M1G 330 4120 SCREW M1G1730 6120 SCREW M1G1740 10 47 SCREW 705GH9K0F34016 ASS Y 705GH9K0P34009 ASS Y 750GLH9013D12N000R PANEL 190ME13 D10 HSD H26G 800850 1A BARCODE H40G 19N850 4B ID LABEL H41G7800850 4A QSG H41G780085011A EU WARRANTY CARD H44G9039850 3A CARTON H45G 87 1 3H R EPE COVER H45G 87 4 H R PE BAG FOR BASE MANUAL H70G1600850 2B CD M...

Page 46: ...03 95G 90 23 TINCOATEDCOPPER J205 95G 90 23 TINCOATEDCOPPER J207 95G 90 23 TINCOATEDCOPPER R301 61G 60218352T RST CFR 18KOHM 5 1 6 R302 61G 60218352T RST CFR 18KOHM 5 1 6 R212 61G 60222452T RST CFR 220KOHM 5 1 C210 67G 2151007NT ELCAP 10UF 20 50V 10 C201 67G215B4713HT ELCAP 470UF 20 16V 1 C202 67G215B4713HT ELCAP 470UF 20 16V 1 C205 67G215B4713HT ELCAP 470UF 20 16V 1 C207 67G215B4713HT ELCAP 470UF...

Page 47: ...2 61G0603000 RST CHIPR 0 OHM 5 1 R419 61G0603000 RST CHIPR 0 OHM 5 1 R421 61G0603000 RST CHIPR 0 OHM 5 1 R705 61G0603000 RST CHIPR 0 OHM 5 1 R720 61G0603000 RST CHIPR 0 OHM 5 1 R721 61G0603000 RST CHIPR 0 OHM 5 1 R462 61G0603100 RST CHIPR 10 OHM 5 1 R463 61G0603100 RST CHIPR 10 OHM 5 1 R464 61G0603100 RST CHIPR 10 OHM 5 1 R465 61G0603100 RST CHIPR 10 OHM 5 1 R466 61G0603100 RST CHIPR 10 OHM 5 1 R4...

Page 48: ...0KOHM 5 1 R457 61G0603103 RST CHIPR 10KOHM 5 1 R459 61G0603103 RST CHIPR 10KOHM 5 1 R460 61G0603103 RST CHIPR 10KOHM 5 1 R461 61G0603103 RST CHIPR 10KOHM 5 1 R471 61G0603103 RST CHIPR 10KOHM 5 1 R484 61G0603103 RST CHIPR 10KOHM 5 1 R485 61G0603103 RST CHIPR 10KOHM 5 1 R487 61G0603103 RST CHIPR 10KOHM 5 1 R496 61G0603103 RST CHIPR 10KOHM 5 1 R708 61G0603103 RST CHIPR 10KOHM 5 1 R711 61G0603103 RST ...

Page 49: ...09 65G0603104 32 CHIP 0 1UF 50V X7R C410 65G0603104 32 CHIP 0 1UF 50V X7R C411 65G0603104 32 CHIP 0 1UF 50V X7R C412 65G0603104 32 CHIP 0 1UF 50V X7R C413 65G0603104 32 CHIP 0 1UF 50V X7R C414 65G0603104 32 CHIP 0 1UF 50V X7R C415 65G0603104 32 CHIP 0 1UF 50V X7R C416 65G0603104 32 CHIP 0 1UF 50V X7R C419 65G0603104 32 CHIP 0 1UF 50V X7R C420 65G0603104 32 CHIP 0 1UF 50V X7R C422 65G0603104 32 CHI...

Page 50: ...0 047UF 50V X7R C435 65G0603473 32 CHIP 0 047UF 50V X7R C436 65G0603473 32 CHIP 0 047UF 50V X7R C437 65G0603473 32 CHIP 0 047UF 50V X7R C438 65G0603473 32 CHIP 0 047UF 50V X7R FB407 71G 56K121 M CHIP BEAD FB401 71G 56Z601 CHIP BEAD 600 OHM 0805 FB402 71G 56Z601 CHIP BEAD 600 OHM 0805 FB403 71G 56Z601 CHIP BEAD 600 OHM 0805 FB404 71G 56Z601 CHIP BEAD 600 OHM 0805 FB405 71G 56Z601 CHIP BEAD 600 OHM ...

Page 51: ...P ELCAP 680UF 20 25V 1 C923 67G 215681 4N GP ELCAP 680UF 20 25V 1 C924 67G 215681 4N GP ELCAP 680UF 20 25V 1 C811 67G215D4714KV ELCAP 470UF 20 25V 1 C820 67G215D4714KV ELCAP 470UF 20 25V 1 C925 67G215D4714KV ELCAP 470UF 20 25V 1 C926 67G215S1023KV ELCAP 1000UF 20 16V C927 67G215S4713KV ELCAP 470UF 20 16V 1 C932 67G215S4713KV ELCAP 470UF 20 16V 1 L902 73G 174 65 H LINE FILTER L901 73G 174 76 L CHOK...

Page 52: ...1G0805104 RST CHIPR 100KOHM 5 R813 61G0805105 RST CHIPR 1MOHM 5 1 R816 61G0805105 RST CHIPR 1MOHM 5 1 R820 61G0805153 RST CHIPR 15KOHM 5 1 R830 61G0805153 RST CHIPR 15KOHM 5 1 C808 61G0805224 RST CHIPR 220KOHM 5 R929 61G0805240 1F RST CHIPR 2 4KOHM 1 R841 61G0805300 0F RST CHIPR 300 OHM 1 R817 61G0805330 2F RST CHIPR 33KOHM 1 1 R926 61G0805330 2F RST CHIPR 33KOHM 1 1 R827 61G0805360 1F RST CHIPR 3...

Page 53: ...IP 0 1U 50V X7R C930 65G0805104 32 CHIP 0 1U 50V X7R C931 65G0805104 32 CHIP 0 1U 50V X7R C806 65G0805105 22 CHIP 1UF 25V X7R 0805 C812 65G0805152 32 CHIP 1500PF 50V X7R 080 C813 65G0805152 32 CHIP 1500PF 50V X7R 080 C822 65G0805152 32 CHIP 1500PF 50V X7R 080 C823 65G0805152 32 CHIP 1500PF 50V X7R 080 C913 65G0805221 32 CHIP 220PF 50V X7R 0805 C804 65G0805225 12 CHIP 2 2UF 15V X7R 0805 C818 65G080...

Page 54: ...FUSE 2 5A 250V 34FPE19P03 CASE EEL19 34FPE19P03 CASE EEL19 Q900 57G 600 35 STP8NK80ZFP TO 220FP HS4 Q9 0 90G6264 1 HEAT SINK M1G1730 8128 CR3 SCREW R909 61G152M10458F6W56 RST MOFR 100KOHM 5 2 96G 29 6 SHRINK TUBE UL CSA 5T 42 1 CUSHION 12T 372 1 MICA HS3 D9 2 90G6264 1 HEAT SINK D920 93G 60276 DIODE SBT150 10LST SANY M1G1730 10128 CR3 SCREW M3x10 D900 93G1100 1052T BA159G 96G 29 1 SHRINK TUBE UL C...

Page 55: ...WITCH TSVB 2 SW004 77G 602 1 CJ TACT SWITCH TSVB 2 715G2226 1 K KEY BOARD PCB SMTKEPC6QA5 KEY BOARD FOR SMT SW005 77G 600 1GCJ TACT SWITCH TSPB 2 SW006 77G 600 1GCJ TACT SWITCH TSPB 2 DP001 81G 12 2 GP LED CN005 95G8014 6639 WIRE HARNESS C101 65G0603104 32 CHIP 0 1UF 50V X7R C102 65G0603104 32 CHIP 0 1UF 50V X7R 715G2226 1 P KEY BOARD PCB Q1G 130 6120 SCREW T3X6 Q1G1040 12120 SCREW Q12G6600 8 PORO...

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