Q74A Service Manual Q74A Service Manual -2- Contents PRECAUTIONS................................................................................................. 4 ITEMS ............................................................................................................ 6 HOW TO CONNECT THE SEVERAL CABLES TO THE LCD MONITOR.......................... 7 ▶ Setting up the LCD monitor..................................................................... 7 ADJUSTING THE MONITOR................................................................................ 8 Q74A SPECIRICATIONS...................................................................................... 9 ▶ Q74A Specifications .................................................................................. 9 DISPLAY MODES............................................................................................ 10 PowerSaver..................................................................................................... 10 OSD MENU.................................................................................................... 11 ▶ Menu Tree............................................................................................ 11 FACTORY SET................................................................................................ 12 BURN-IN MODE ............................................................................................. 12 INVERTER & POWER ...................................................................................... 13 ▶ Inverter & POWER(Q74A)........................................................................ 13 ▶ Specification ......................................................................................... 13 ▶ Electrical Characteristics ........................................................................... 13 ▶ Pin Connection ...................................................................................... 14 TROUBLESHOOTING ...................................................................................... 15 ▶ No operating at all................................................................................... 15 ▶ Doesn’t display on LCD............................................................................ 16 EXPLODE VIEW ............................................................................................. 18 ▶ Q74A.................................................................................................. 18 PART LIST ..................................................................................................... 19 ▶ Q74A Mechanical Part List ........................................................................ 19 ▶ Q74A AD B/D Part List ............................................................................ 20 ▶ Q74A FUNCTION KEY B/D Part List........................................................... 23 ▶ Q74A FUNCTION LED B/D Part List........................................................... 23 ▶ Inverter & POWER BD Part List(FLF1742-20A) .............................................. 24 ▶ Inverter & POWER BD Part List(FLF1742-20A) .............................................. 25 CIRCUIT DIAGRAM ........................................................................................ 26 ▶ AD B/D(Q74A)...................................................................................... 26 ▶ Inverter & POWER B/D(FLF1742-20A) ........................................................ 31 PCB Layout .................................................................................................... 34 ▶ AD B/D TOP SILK (Q74A) ....................................................................... 34 Q74A Service Manual -3- ▶ AD B/D TOP PATTERN (Q74A) ................................................................. 35 ▶ AD B/D BOTTOM SILK (Q74A) ................................................................ 36 ▶ AD B/D MASK TOP (Q74A) ..................................................................... 37 ▶ AD B/D MASK BOTTOM (Q74A) .............................................................. 38 ▶ FUNC B/D TOP SILK (Q74A).................................................................... 39 ▶ FUNC KEY B/D BOTTOM PATTERN (Q74A)................................................ 39 ▶ FUNC LED B/D TOP SILK (Q74A) ............................................................. 39 ▶ FUNC LED B/D BOTTOM PATTERN (Q74A)................................................ 39 Q74A Service Manual -4- Q74A PRECAUTIONS Warning : The following information will help you avoid the risk of electric shock, serious injury, and death. � Plug the power cord into a properly grounded outlet. There is the risk of electric shock. � If you hear a noise or smell smoke from the computer or adaptor, unplug the power cord immediately, and call the service center. There is the risk of electric shock or fire. � Do not overload an electrical outlet with too many devices. There is the risk of fire. � Do not unplug from the outlet by pulling the power cord or when your hands are wet. There is the risk of electric shock or fire. � Do not bend the power cord excessively or place heavy objects on it. Keep children and pets away from the power cord as they may damage the power cord. There is the risk of electric shock or fire. � Do not use a damaged power cord or plug. Make sure the plug fits snugly into the outlet. There is the risk of electric shock or fire. � Do not expose the monitor to the direct sun light. � Do not block the fan louvers. There is the risk of fire or damage to the monitor. � Do not attempt to disassemble, fix, or modify the monitor. There is the risk of electric shock or fire. � Keep the monitor away from high temperature, humidity, and dust. Operating environment = 0 ~ 40 Degrees Celsius Operating environment = 30 ~ 80 Relative Humidity � Do not allow any object or liquid to enter inside the monitor. There is the risk of electric shock, fire, or damage to the monitor. Q74A Service Manual -5- Caution : The following information will help you avoid the risk of minor ofr moderate injury,or damage to the monitor. � Use a proper voltage/current level indicated. � Do not clean the LCD with abrasive chemicals. There is the risk of damage to the LCD. � Do not scratch and damage the LCD with sharp objects. � Keep the monitor away from objects and electrical appliances that may generate electromagnetic fields. � Place the monitor on a flat, stable surface. The monitor may fall and there is the risk of damage or injury. � Unplug the power cord when the monitor is not in use for a prolonged period of time. Instruction for Cleaning the Monitor � Make sure the power cord is unplugged. � Do not spill or pour liquid on the monitor. � Cleaning the LCD panel 1. Use a clean, soft cloth to wipe off dust from the LCD. 2. If still not clean, wipe the LCD with a clean soft cloth with a small amount of glass cleaner without alcohol or ammonia. � Caution Do not use alcohol or ammonia based cleaning products. Abrasive chemicals, such as alcohol or ammonia, may damage the monitor. The company is not responsible for the damages to the monitor caused by the use of alcohol or ammonia based cleaning products. Q74A Service Manual ITEMS ◈ LCD Monitor ◈ Stand ◈ Power Cord ◈ 15pin D-Sub Cable ◈ User Manual ◈ 24pin DVI Cable *1 ◈ Audio Cable *2 *1 : For DVI Model Only. *2 : For Audio Model Only. Notice Please make sure the following items are included with your monitor. If any items are missing, contact your dealer. . -6- Q74A Service Manual HOW TO CONNECT THE SEVERAL CABLES TO THE LCD MONITOR ▶ Setting up the LCD monitor No. Name Cable connections 1 Power Power Cord 2 PC 15-pin D-Sub Signal Cable 3 DVI DVI-D Cable *1 4 SPK IN Audio Cable *2 5 SPK OUT External Speaker Cable *2 *1 : For DVI Model Only *2 : For Audio Model Only -7- Q74A Service Manual ADJUSTING THE MONITOR The Function Control Buttons How to use the Function Key Menu Key: 1. First click : The OSD main menu appears. 2. Second click : The OSD main menu disappears. Select Key : Select a command function. Down Key : 1. Move the on-screen highlighted comand item to the next one. 2. Decrease the current option value. Mute Key : *2 Sound MUTE ON/OFF Button. Up Key : 1. Move the on-screen highlighted comand item to the previous one. 2. Increase the current option value. Auto Key : *1 This will optimize image quality automatically. MWE Key : You can manually adjust the screen to your environment on the computer. ex.) Internet, Games, Movies ... *1 : For Analog Mode Only , *2 : For Audio Model Only. -8- Q74A Service Manual Q74A SPECIRICATIONS ▶ Q74A Specifications MODE Analog Digital Type TFT active matrix 17 inch Size 337.92 X 270.336 (mm) Pixel Pitch 0.264 X 0.264 (mm) Panel Display Color 8-bit (16,777,216 colors) Basic 1280x1024@60Hz Display Resolution Maximum 1280x1024@75Hz 1280x1024@60Hz Horizontal 31.5 ~ 80KHz 31 ~64KHz Frequency vertical 56 ~ 75Hz 59 ~ 61Hz 15 pin D-Sub 24pin DVI-D Connectors Speaker Input/Headphone Output(Audio Cable) *1 Tilting Degree (U/D) -5° ~ 20° Degree Plug&Play VESA DDC 1/2B Input Internal type : 100~240V AC,50/60Hz, 0.5A Consumption Under 40W (Speaker Max 4W *1) Power Standby mode 1W less Power Management PowerSaver Temperature 0~25℃ (32℉~77℉) Environmental Consideration Humidity 90% less Dimensions Outside 387mm * 185mm * 396mm (W*D*H) Weight 3.9kg *1 : For Audio Model Only Notice This monitor can be installed on any Plug & Play compatible system. Interaction of the monitor and computer systems will provide the best operating conditions and monitor settings. In most cases, monitor installation will proceed automatically, unless the user wishes to select alternate settings. -9- Q74A Service Manual -10- DISPLAY MODES Mode Resolution Horizontal Frequency(KHz) Vertical Frequency(Hz) Pixel Clock (MHz) Sync Polarity(H/V) 720 X 400 31.468 70.087 28.322 -/+ 31.468 59.940 25.175 -/- 35.000 66.670 30.240 -/- VGA 640 X 480 37.500 75.000 31.500 -/- 37.879 60.300 40.000 +/+ 48.077 72.188 50.000 +/+ SVGA 800 X 600 46.875 75.000 49.500 +/+ 48.363 60.004 65.000 -/- 56.476 70.000 75.000 -/- XGA 1024 X 768 60.023 75.029 78.750 +/+ 63.981 60.020 108.000 +,-/+,- SXGA 1280 X 1024 79.976 *1 75.025 *1 135.000 *1 +/+ *1 *1 : For Analog Mode Only. PowerSaver State Power Consumption Recovery Time LED Color ON Under 40W - Green OFF Less than 1W Within 2 Sec Amber Q74A Service Manual -11- OSD MENU ▶ Menu Tree Main Menu Sub Menu Function Description BRIGHTNESS Control of brightness CONTRAST Control of contrast H POSITION Control of horizontal position V POSITION Control of vertical position PHASE Control of phase CLOCK Control of horizontal clock PICTURE AUTO ADJUST Automatic adjust position BLUISH Color Temperature 9300k (some blue color) REDISH Color Temperature 6500k (some red color) USER RED : 0 ~ 100 GREEN : 0 ~ 100 BLUE : 0 ~ 100 COLOR AUTO COLOR Automatic adjust color OSD H POSI Moves the OSD Menu OSD V POSI Moves the OSD Menu OSD TIMER OSD display time OSD TRANSPARENCY OSD Transparency LANGUAGE Select OSD language RECALL Factory default values INPUT SELECT DVI, ANALOG Mode Change AUDIO Sound Mute On/Off function. *1 MISC VOLUME You can adjust the volume. *1 *1 : For Audio Model Only Q74A Service Manual -12- FACTORY SET OSD Menu => Misc => Recall => Yes. Every value changes factory setting value. After factory set executes, power OFF � power ON automatically. You must push the “AUTO” button because of optimum image quality automatically. When user want factory setting value, you must execute this function. BURN-IN MODE If you push the down button more than 5 seconds in disconnected signal cable status, you can see changed color. Burn-In mode displays chaged color continually. (white, red, blue, green etc.) We can check normal operating status of the monitor under mass production. If you want to finish Burn-In mode, you can turn off the power by only push the power button. Q74A Service Manual -13- INVERTER & POWER ▶ Inverter & POWER(Q74A) � L.I.P.S : LCD INVERTER POWER SYSTEM(FLF1742-20A) ▶ Specification � Operate 4 CCFL Lamps. � Current Feedback Control � Input Voltage : DC 12V. � When any lamp doesn’t operate, the panel is under protection status. Protection status means that circuit protect the other lamp. � PWM Control. � Remote Power On/Off control � High Efficiency ▶ Electrical Characteristics Description Min Typ Max Sign Remark Input Voltage 11.0 12.0 13.0 Vin Input Current 1.5 1.7 1.9 A 12Vdc Output Current 5.0 6.0 7.0 mArms 1ccfl current Lamp Frequency 40 47 55 kHz Normal Operation ON Vin=12V ON/OFF=5V ON/OFF Control Shunt-down(Lamp off) OFF Vin=12V ON/OFF=0V Kick-Off Voltage MORE THAN 1100 Vrms Kick-Off Q74A Service Manual -14- ▶ Pin Connection - INPUT CONNECTOR CON1 Pin NO. Symbol Descripition 1,2 VIN 1 Input Voltage : 12V 3,4,7 GND GND 5,6 VIN 2 Inopt Voltage : 5V 8 ON/OFF Power System Return 9 NC NC - OUTPUT CONNECTOR CN1,2,3,4 Pin NO. Symbol Descripition 1 HV1,2,3,4 HI VOLTAGE TERMINAL 2 LV1,2,3,4 LOV VOLTAGE TERMINAL Q74A Service Manual -15- TROUBLESHOOTING ▶ No operating at all What you see Suggested Actions Is the power inserted correctly? Insert the plug correctly referring to the User Manual. Does the Power Adapter operate correctly? Check the Power Adapter. The green LED is OK. The Power Adapter operates correctly, but the LCD Monitor does not operate correctly. Check the harness of the FUNC. B/D. Does The Power On/Off and the LED Operate corretly? If the program of the MICOM is error, then exchange the MICOM. If the AD B/D is error, then exchange the AD B/D. The Power On/Off and the LED operate correctly, but the OSD menu doesn’t display on screen. First, operate the FACTORY SET. Second, check the Panel Harness that is connected to the AD B/D. Check the LAMP Harness of the Panel. Lastly, exchange the LIPS. The OSD menu operates correctly but the image doesn’t display on screen. Insert the SIGNAL Cable correctly referring to the User Manual. Check the LAMP Harness of Panel and Inverter. Lastly, Check the LAMP of Panel. The Power On/Off operates correctly, but the screen is ‘ALL WHITE’. The LAMP is OK. Check the Panel Harness that is connected to the AD B/D. The Power On/Off operates correctly, but the screen is ‘ALL BLACK’. Check the LAMP Cable. Check or exchange the LIPS. Check the Panel Cable. Q74A Service Manual -16- ▶ Doesn’t display on LCD “VIDEO MODE NOT SUPPORTED” message [Windows] Reboot safe mode. (press the F8 key during booting). Remove GraphicCard Driver. Reboot normal mode. Reinstall GraphicCard Driver. “No signal” message Check the signal cable. Check DPMS mode in PC. Check pins of the signal cable. If PC keeps DPMS status Continually (No signal Input, LED color amber) Check the signal cable. Check pins of the signal cable. Check HS_VGA and VS_VGA in schematics. Doesn’t display on screen Correctly include OSD menu Check scaler output signal. Check panel harness between panel and AD B/D. Check solder status of the scaler. Doesn’t display on screen Correctly except OSD menu Check the signal cable. Check scaler input signal (RGB,H-SYNC,V-SYNC) Noise in vertical pattern. Execute Auto Adjust. According to graphic card. Check 60Hz vertical frequency in display properties. Display position error Execute Auto Adjust Display position error occurred on dark or moving picture.(like game) In this case, you must execute Auto Config in windows screen. Q74A Service Manual -17- Color error include OSD menu Check the panel harness. Check scaler output signal. Color error except OSD ment. Check the signal cable. Check pins of the signal cable. Check input/output signal of the signal cable Key button error Check the function(key) harness. Check the function ass’y (mechanical). Brightness differ between upper and lower on screen. Because of viewing angle. Q74A Service Manual EXPLODE VIEW ▶ Q74A -18- Q74A Service Manual PART LIST ▶ Q74A Mechanical Part List -19- Q74A Service Manual -20- ▶ Q74A AD B/D Part List Location Parts Code Parts Name Parts Spec. Remark CE16 CEXF1C471A C ELECTRO 16V 470uF 20% 10x12.5 TAP CE5,CE6,CE12, CE13,CE14, CE15 CEXF1C101A C ELECTRO 16V 100uF 20% 6.3X11 TAP CE7, CE8, CE9, CE10, CE11 CEXF1C100A C ELECTRO 16V 10uF 20% 5x11 TAP CON1 97E6200710 CONN WAFER 12507WR-30000 (30P LVDS) C6, C7, C8, C10, C11, C12, C18,C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31, C34, C37, C38, C39, C40, C41, C42, C43, C44, C45, C46, C47, C48, C49 HCCK104ZBA C CHIP CERA 50V 100nF Z 1608 C9 HCCH103KBA C CHIP CERA 25V 10nF K 1608 C13, C14, C15 HCCK200JBA C CHIP CERA 50V 20pF J 1608 HCCK330JBA C CHIP CERA 50V 33pF J 1608 C17 HCCK221JBA C CHIP CERA 50V 220pF J 1608 C35, C36 HCCK101JBA C CHIP CERA 50V 100pF J 1608 C32, C33 HCCK220JBA C CHIP CERA 50V 22pF J 1608 DZ1, DZ2, DZ3 ,DZ4, DZ5, DZ6 DUDZS5.6B- ZENOR DIODE UDZS 5.6B(SOD-323), ROHS 적용품 DZ7 DZMM55C5V6 ZENER DIODE ZMM55C5V6 D2, D3, D4, D5, D6, D7, D8, D9, D10D11, D12, D13, D14,D15, D16 DBAV99---- CHIP DIODE BAV99 (SOT-23) FB4, FB5, FB7 HFA1608121 BEAD CHIP CIM10J121NC(BEAD_120 ohm_1608) FB3, FB6, R60 HRFS000JBA R CHIP 1/16W 0 ohm J 1608 Q74A Service Manual -21- FB8 HFA3216121 BEAD CHIP CIM31J121NE (BEAD_120ohm_3216) J4 97E6200110 15-PIN D-SUB HDR10-15F-RL J5 97E6200734 CONN WAFER IBP-07R-20T(GIL-S-7P-S2L2-EF) : Right angle J6 97E6200790 DVI_29PIN 361R02-0 J7 99E6203095 CONN WAFER IBP-09S-20T(GIL-S-9P-S2T2-EF) : Q4, Q5 TSBT3904-B TR CHIP SBT3904 Q2, Q3 TSBT3906-B TR CHIP SBT3906 R21, R24, R26, R41, R42, R43, R52, R53, R64, R65 HRFS103JBA R CHIP 1/16W 10K J 1608 R20 HRFS222JBA R CHIP 1/16W 2.2K J 1608 R27, R28, R45, R46, R50, R54, R55, R57, R58, R59, R61, R66, R100, R101 HRFS472JBA R CHIP 1/16W 4.7K J 1608 R7, R8, R9, R10, R11, R12, R13, R14 R15, R16, R22, R51 HRFS101JBA R CHIP 1/16W 100 ohm J 1608 R17, R18, R19 HRFS750JBA R CHIP 1/16W 75 ohm J 1608 R23, R25 HRFS201JBA R CHIP 1/16W 200 ohm J 1608 R29, R30, R31, R33, R35, R36, R37R38, R39, R40 HRFS100JBA R CHIP 1/16W 10 ohm J 1608 R32, R34 HRFS220JBA R CHIP 1/16W 22 ohm J 1608 R44 HRFS821JBA R CHIP 1/16W 820 ohm J 1608 R47, R48, R67, R68 HRFS330JBA R CHIP 1/16W 33 ohm J 1608 R49 HRFS391JBA R CHIP 1/16W 390 ohm J 1608 R56 HRFS223JBA R CHIP 1/16W 22K J 1608 R62 HRFS104JBA R CHIP 1/16W 100K J 1608 R63 HRFS122JBA R CHIP 1/16W 1.2K J 1608 U2 1A111733DC IC REGULATOR APL1117-33UC-TR(TO-252) U3 1AP1117E18 IC REGULATOR AP1117E18A, SOT223-3L U4 1TSUM56AL- IC SCALER TSUM56AL-LF ( MSTAR ) U5 1AT24C02N- IC EEPROM AT24C02N-10SU-2.7 , LEAD FREE U6 1FDC6329L- IC LOADSWITCH FDC6329L SUPERSOT TM-6 , ROHS U7 1PS25LV512 IC FLASH MEMORY PS25LV512 ( MSTAR ) , 512KBIT , Q74A Service Manual -22- U8 1AT24C16-- IC EEPROM (ATMEL) AT24C16N-10SU-2.7(SOIC 8P), ROHS 적용품 X1 5XJ14R318E CRYSTAL QUARTZ 14.3181MHz XTAL2 20pF DIP CE1, CE4 CEXF1C471A C ELECTRO 16V 470uF 20% 10x12.5 TAP CE2, CE3 CEXF1C102A C ELECTRO 16V 1000uF 20% 10x16 TAP C1, C2 HCCK104ZBA C CHIP CERA 50V 100nF Z 1608 C5 HCCK105ZBA C CHIP CERA 50V 1uF Z 1608 C3, C4 HCCF474MBA C CHIP CERA 16V 470nF M 1608 C3, C4 HCCF474KBA C CHIP CERA 16V 470nF K 1608 D1 DZN4002--- DIODE 1N4002 100V 1A T-26 FB1, FB2 HFA1608121 BEAD CHIP CIM10J121NC(BEAD_120 ohm_1608) J1 97E6200600 CONN WAFER 53014-0410 J2, J3 97E6300220 STEREO JACK ST-320 (5P 3.5pi) Q1 TSBT3904-B TR CHIP SBT3904 R4 HRFS472JBA R CHIP 1/16W 4.7K J 1608 R2 ,R3 HRFS103JBA R CHIP 1/16W 10K J 1608 R5, R6 HRFS303JBA R CHIP 1/16W 30K J 1608 R1 HRFS304JBA R CHIP 1/16W 300K J 1608 U1 1TDA7496L- IC AUDIO TDA7496L(ST) -Red Calor : DVI Part -Blue Calor : AUDIO Part Q74A Service Manual -23- ▶ Q74A FUNCTION KEY B/D Part List Location Parts Code Parts Name Parts Spec. A/J Remark PCB 97E6500843-00 FUNCTION_PCB 1 LAYER(102.5*15mm) HL711S/D J1 99E6203075 CONN WAFER IBP-07S-20T(GIL-S-7P-S2L2-EF) J2 99E6203045 CONN WAFER IBP-04S-20T(GIL-S-4P-S2T2-EF) R1,R2 HRFS152JBA R CHIP 1/6W 1.5K J 1608 R3 HRFS302JBA R CHIP 1/6W 3K J 1608 SW1,SW2, SW3,SW4, 5S51280A6- TACT SWITCH 1280A6 (KNOB-5mm) ▶ Q74A FUNCTION LED B/D Part List Location Parts Code Parts Name Parts Spec. A/J Remark PCB 97E6500844-00 LED FUNCTION_PCB 2 LAYER(41.5*15mm) HL711S/D J1 99E6203045 CONN WAFER IBP-04S-20T(GIL-S-4P-S2T2-EF) LED DLSAM3270- LED LED 3pai 3PIN(2.54-PITCH) SW5 5S51280A6- TACT SWITCH 1280A6 (KNOB-5mm) Q74A Service Manual ▶ Inverter & POWER BD Part List(FLF1742-20A) NO. Ref. PART TYPE 1st. Vendor 2nd. Vendor Q,ty 1 LF101 LFL002A 동흥 GET 1 2 PC101 LTV-817B-M,TCET1103 LITON Vishay 1 3 BD101 KBP206G TSC 1 4 D104,105 SB560 VISHAY-GS DIODES 2 5 D103 MBR10H150CT VISHAY-GS 1 6 C105 CE82u400V85SD,SHL,GS 삼영,삼화,만유 1 7 C103,104 KNB1560MKP-334K ISKRA PILCO,선일 2 8 VS1 VARISTOR 7D471 ILJIN(AMOTECH) CNR 1 9 C101,102 DG102Y1 두산, 동일 2 10 C106 DG222Y1 두산, 동일 1 11 C2 CE220U25V105LXZ,WL,RT 삼영,삼화,만유 1 12 CN100 SC-8R-F152P32R-GB SUPERCOM 1 13 CN101 GIL-S-9P-S2T2-EF LG전선 1 14 IC101 FSDM0565R FAIRCHILD 1 15 CN1,2,3,4 35002WR-02, JE207-B1T-02 연호 JAEEUN 4 16 T101 TRSL014A 동흥 GET 1 17 T3 TRS1801U - DIP 경인,링보 다폰 1 18 U1,2 AP4511GD-DIP APEC 2 19 U3 BIT3105 - DIP BITEK 1 20 D101 RS1J, UF4007 TSC SHS 1 21 ZD104 ZY160 SHS 1 22 D2,4 DAN217,BAV99 Rohm DIODES 2 23 D5 DAP202U Rohm 1 24 ZD1,2,3 UDZS5.6B,BZT52C5V6S-7 Rohm DIODES 3 25 ZD102 UDZS10B,BZT52C10V0S Rohm DIODES 1 26 ZD101,103 UDZS20B,BZT52C20V0S Rohm DIODES 2 27 Q1 2N3904,MMBT3904 Rohm DIODES 1 28 C1,17 CC106Z10V3216 삼성,TDK 태양유전 2 29 C8 CC473K50V2012 삼성,TDK 태양유전 1 30 C13 CC271K50V2012 삼성,TDK 태양유전 1 31 C6,7,9,12,20 CC103K50V2012 삼성,TDK 태양유전 5 32 C11,22,24,122 CC104K50V2012 삼성,TDK 태양유전 4 33 C3,4,14,19,119 CC105Z16V2012 삼성,TDK 태양유전 5 34 R116,117 CR2012J200 삼성 Rohm 2 35 R114,115 CR2012J181 삼성 Rohm 2 36 R28,29 CR2012J221 삼성 Rohm 2 37 R121 CR2012J122 삼성 Rohm 1 38 R119,122 CR2012J332 삼성 Rohm 2 39 R1,16,20,22,24 CR2012J103 삼성 Rohm 5 40 R2,3,10 CR2012J183 삼성 Rohm 3 -24- Q74A Service Manual ▶ Inverter & POWER BD Part List(FLF1742-20A) NO. Ref. PART TYPE 1st. Vendor 2nd. Vendor Q,ty 41 R12 CR2012J433 삼성 Rohm 1 42 R26 CR2012J753 삼성 Rohm 1 43 R11 CR2012J134 삼성 Rohm 1 44 R5 CR2012J154 삼성 Rohm 1 45 R8,25 CR2012J224 삼성 Rohm 2 46 R9 CR2012J824 삼성 Rohm 1 47 R27 CR2012J105 삼성 Rohm 1 48 R15,19 CR2012F3600 삼성 Rohm 2 49 R126 CR2012F1431 삼성 Rohm 1 50 R123 CR2012F1801 삼성 Rohm 1 51 R124 CR2012F2702 삼성 Rohm 1 52 R101,102,103 CR3216J334 삼성 Rohm 3 53 R111 RD 1/4W J 3.9 OHM 제일전자 스마트전자 1 54 R105,106 RD 1/4W J 33K OHM 제일전자 스마트전자 2 55 C112 221K 1KV 동일 두산 1 56 C113 222K 1KV 동일 두산 1 57 C115 CE680u25V105RD,KM 삼영,삼화,만유 1 58 C117,118 CE1000u10V105RD,KM 삼영,삼화,만유 2 59 C110 CE47U50V 85/CE47U50V 105 삼영,삼화,만유 1 60 IC102 TL431A Fair Child 우석 1 61 BC102 EBFL001A 동흥전자 GET 1 62 C5,10 CL100K3K 두산전자 동일 2 63 D102 PR1003, FR104 Diodes 성호반도체 1 64 TH101 SCK08053MS,NTC 5D-9 Thinking 삼경쎄라믹 1 65 F101 SR-5 3.15A 세이브퓨즈 1 66 P.W.B FR-1 PL1742C20 다산 동명 1 -25- Q74A Service Manual -26- CIRCUIT DIAGRAM ▶ AD B/D(Q74A) Q74A Service Manual -27- Q74A Service Manual -27- Q74A Service Manual -28- +5V BT13 1 + CE11 10uF/16V BKLT-EN TP3 1 AVDD_PLL_3.3 +5V +5V Q5 SBT3904 3 1 2 R60 0 R26 10K C32 22p RXEC- R24 10K FLASH_MEMORY J5 3 2 4 5 1 6 7 KEY1 KEY2 GND LED_R GND LED_G VCC GIN R55 4.7K RXO3+ R62 100K D8 BAV99 1 2 3 U8 AT24C16(SOIC) 1 2 3 4 5 6 7 8 A0 A1 A2 GND SDA SCL WP VCC BT7 1 AVDD_ADC_3.3 INV_ON TP29 1 BT4 1 BT9 1 BT12 1 BT5 1 R52 10K VDDC_1.8 BT25 1 BT14 1 SDA_DVI RXE1- SOGIN BT16 1 GND_POWER RXO0- +5V BT10 1 R67 33 D7 BAV99 1 2 3 R27 4.7K DET DVI BT21 1 BT6 1 BT18 1 VDDP_3.3 TP5 1 RXO0- R51 100 VDDC_1.8 C39 0.1uF ST_DET PANEL_INTERFACE DSDA RIN RXE3+ R25 200 +5V KEY_INTERFACE RX1+ R57 4.7K RXO2- R68 33 RXEC+ RXE3- BT20 1 R50 4.7K TP30 1 MUTE RINM VDDP_3.3 R54 4.7K RXEC- RXE3- BT3 1 R59 4.7K BT22 1 BT8 1 C33 22p AVDD_MPLL_3.3 RXO1+ BT23 1 RXE0- R41 10K R32 22 RXE0+ RXOC+ C41 0.1uF INV_ON R64 10K TP28 1 RXOC- R100 4.7K Q2 SBT3906 2 1 3 ON_Pannel R42 10K RXO2+ Q4 SBT3904 BKLT-VBRI ON_Pannel RXE0+ CON1 12507WR-30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VDDP_3.3 EEPROM BIN RXE3+ RXE0- BT2 1 RXE2- RXO2+ R49 390 RX2- RX2+ + CE14 100uF/16V AVDD_DVI_3.3 RXO2- R28 4.7K 0 SCALER & PANEL HL720D Title Document Number Rev Sheet of DESIGN CHECK APPROVAL WooYoung Telecom Co., Ltd. Model RXC- C38 0.1uF SCL_DVI BT19 1 GINM R23 200 RXO0+ RXE2- BT15 1 R53 10K C44 0.1uF RXC+ RXO3- +5V DSCL RXEC+ C42 0.1uF C43 0.1uF RX0- RXO1- RXE2+ R61 4.7K RXE1+ R34 22 RXO3- RXO1- + CE15 100uF/16V X1 14.318MHZ BT1 1 C480.1uF Q3 SBT3906 2 1 3 DIM_ADJ U6 FDC6329L 4 5 6 3 2 1 YTN On-Of f R1_C1 V_Out2 V_Out1 R2 RXE2+ BT26 1 DIM_ADJ C49 0.1uF RXOC+ PS25LV512(SOIC) U7 1 2 3 4 5 6 7 8 CS SO WP GND SI SCK HOLD VCC BT27 1 C40 0.1uF RXO3+ RXO0+ R58 4.7K HSYNC RX1- R65 10K R66 4.7K SCALER & PANEL TP4 1 +5V TP31 1 VOLUM RXOC- VSYNC E R101 4.7K DVI_INPUT RXE1+ C37 0.1uF BT24 1 RX0+ RXO1+ RXE1- C45 0.1uF R63 1.2K VDDP_3.3 R56 223 U4 TSUM56AL-LF 33 32 30 29 18 35 34 19 31 41 42 40 16 17 80 81 78 79 55 61 72 82 94 56 62 73 83 95 58 64 85 57 63 84 47 28 27 2 14 11 8 5 25 26 23 24 22 20 21 1 48 49 50 51 52 53 54 15 43 37 36 38 39 76 77 70 71 74 75 96 97 92 93 90 91 86 87 88 89 44 45 46 66 69 3 4 6 7 10 12 13 59 60 65 67 68 100 99 98 9 GND VDDP DDCA_SDA GND BIN0P GPIO_P15/PWM0 VDDC GIN0M DDCA_SCL GPIO_P23 GPIO_P22 SDI AVDD_PLL BIN0M BYPASS VCTRL LVB0M GND LVA3M LVA2M LVB2M VDDC GPIO_P13 VDDP LVA1P LVB1P GND GPIO_P14 LVACKP LVA0P GPIO_P12 GND LVA1M RST GPIO_P24/PWM2 VSYNC0 HSYNC0 GND AVDD_DVI GND AVDD_DVI GND REFM REFP RIN0P AVDD_ADC RIN0M GIN0P SOGIN0 DDCD_SCL GPIO_P27/PWM1 VDDP GND VDDC MODE[0] MODE[1] LVA3P REXT GPIO_P11/I2C_MDA SDO NC CSZ SCK GND LVB0P LVBCKM LVB2P LVB1M VDDP XIN XOUT GPIO_P07 GPIO_P26/PWM0 GPIO_P02/SAR3 GPIO_P06 GPIO_P25/PWM1 RSTN GPIO_P00/SAR1 GPIO_P01/SAR2 GPIO_P10/I2C_MCL NC NC VDDC LVBCKP R+ R- G+ G- B- CK+ CK- LVACKM LVA2P LVA0M LVB3P LVB3M DDCD_SDA GPIO_P16/PWM2 AVDD_MPLL B+ BT17 1 VDDP_3.3 BT11 1 C47 0.1uF BINM Q74A Service Manual CE4 470uF/16V FB1 BEAD_120ohm_1608 R5 30K GND C2 0.1uF C4 470nF FB2 BEAD_120ohm_1608 C3 470nF R4 4.7K VOLUME AIN-R TP1 1 CE3 1000uF/16V +5V AUDIO_PART R1 300K D1 1N4002/DIP 1 2 CE2 1000uF/16V J1 12507WR-04A 1 2 3 4 LEFT GND GND RIGHT SPEAKER WAFER R3 10K Q1 SBT3904 1 2 3 C5 1uF AIN-R CE1 470uF/16V TP2 1 AIN-L U1 TDA7496L 12 1 11 2 3 20 19 5 6 7 4 8 10 9 13 16 14 15 18 17 MUTE G1 STBY G2 G3 G20 G19 VAROUT-L VOL VAROUT-R LIN NC SVR RIN P13 VCC R_OUT VCC G18 L_OUT +12V MUTE AIN-L R2 10K J2 ST-320 2 3 4 5 1 AUDIO INPUT J3 ST-320 2 3 4 5 1 R6 30K C1 0.1uF -29- Q74A Service Manual -30- D11 BAV99 1 2 3 C35 100pF SDA-DVI D9 BAV99 1 2 3 9 RX0- +5V C4 R31 10 R48 33 D12 BAV99 1 2 3 R46 4.7K RX2- D13 BAV99 1 2 3 D16 BAV99 1 2 3 C36 100pF D14 BAV99 1 2 3 DET_DVI J6 DVI_30P 3 2 1 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 34 3 2 1 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 C1 C2 C3 C4 C5 31 34 RX2- R45 4.7K RX1- SDA_DVI RX0+ U5 AT24C02(SOIC) 1 2 3 4 5 6 7 8 A0 A1 A2 VSS SDA SCL WP VCC DZ4 UDZS5.6B 1 2 8 R35 10 R44 820 24 RXC+ C1 RXC- R29 10 RX0- DVI(Digtial Visual Interface) 29P 0 DVI INPUT HL720D Title Document Number Rev Sheet of DESIGN CHECK APPROVAL WooYoung Telecom Co., Ltd. Model RX2+ RX0+ R47 33 DVI_INPUT SCL_DVI C34 0.1uF RXC+ R37 10 E E P _ R O M +5V RXC- R40 10 RX1- D10 BAV99 1 2 3 RX1+ DET_DVI SCL-DVI DZ5 UDZS5.6B 1 2 16 1 R43 10K DZ6 UDZS5.6B 1 2 D15 BAV99 1 2 3 +5V R33 10 C2 RX1+ R36 10 R39 10 RX2+ 17 R30 10 C3 R38 10 Q74A Service Manual -31- LED_GREEN R2 1.5K J1 CON8 7 6 5 4 3 2 1 GND 5V KEY2 LED_RED SW4 STS-1102A-1 SW2 STS-1102A-1 GND R3 3K GND GND R carbon film(T-52 Small) R1 1.5K J2 CON4 1 2 3 4 SW1 STS-1102A-1 KEY1 SW3 STS-1102A-1 LED_RED LED1 SAM5270 3 2 1 LED_Green SW5 STS-1102A-1 KEY1 GND J3 CON4 4 3 2 1 Q74A Service Manual ▶ Inverter & POWER B/D(FLF1742-20A) - Adapter Cutcuit -32- Q74A Service Manual -Inverter Circuit -33- Q74A Service Manual -34- PCB Layout ▶ AD B/D TOP SILK (Q74A) Q74A Service Manual ▶ AD B/D TOP PATTERN (Q74A) -35- Q74A Service Manual ▶ AD B/D BOTTOM SILK (Q74A) -36- Q74A Service Manual ▶ AD B/D MASK TOP (Q74A) -37- Q74A Service Manual ▶ AD B/D MASK BOTTOM (Q74A) -38- Q74A Service Manual ▶ FUNC B/D TOP SILK (Q74A) ▶ FUNC KEY B/D BOTTOM PATTERN (Q74A) ▶ FUNC LED B/D TOP SILK (Q74A) ▶ FUNC LED B/D BOTTOM PATTERN (Q74A) -39-