▶ 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 ▶...
Page 3
▶ 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...
All manuals and user guides at all-guides.com Q74A Service Manual 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.
Page 5
All manuals and user guides at all-guides.com Q74A Service Manual 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.
All manuals and user guides at all-guides.com 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.
All manuals and user guides at all-guides.com Q74A Service Manual HOW TO CONNECT THE SEVERAL CABLES TO THE LCD MONITOR ▶ Setting up the LCD monitor Name Cable connections Power Power Cord 15-pin D-Sub Signal Cable DVI-D Cable *1 SPK IN...
All manuals and user guides at all-guides.com 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.
All manuals and user guides at all-guides.com Q74A Service Manual Q74A SPECIRICATIONS ▶ Q74A Specifications MODE Analog Digital Type TFT active matrix 17 inch Size Panel 337.92 X 270.336 (mm) Pixel Pitch 0.264 X 0.264 (mm) Display Color 8-bit (16,777,216 colors)
All manuals and user guides at all-guides.com Q74A Service Manual OSD MENU ▶ Menu Tree Main Menu Sub Menu Function Description PICTURE BRIGHTNESS Control of brightness CONTRAST Control of contrast H POSITION Control of horizontal position V POSITION Control of vertical position...
All manuals and user guides at all-guides.com Q74A Service Manual 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.
All manuals and user guides at all-guides.com Q74A Service Manual 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.
All manuals and user guides at all-guides.com Q74A Service Manual ▶ Pin Connection - INPUT CONNECTOR CON1 Pin NO. Symbol Descripition VIN 1 Input Voltage : 12V 3,4,7 VIN 2 Inopt Voltage : 5V ON/OFF Power System Return - OUTPUT CONNECTOR CN1,2,3,4 Pin NO.
All manuals and user guides at all-guides.com Q74A Service Manual 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 Check the Power Adapter.
All manuals and user guides at all-guides.com Q74A Service Manual ▶ Doesn’t display on LCD “VIDEO MODE NOT [Windows] SUPPORTED” message 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.
Page 17
All manuals and user guides at all-guides.com Q74A Service Manual 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.
All manuals and user guides at all-guides.com Q74A Service Manual ▶ Q74A AD B/D Part List Location Parts Name Parts Spec. Remark Parts Code CE16 16V 470uF 20% 10x12.5 TAP CEXF1C471A C ELECTRO CE5,CE6,CE12, 16V 100uF 20% 6.3X11 TAP CE13,CE14,...
Page 21
All manuals and user guides at all-guides.com Q74A Service Manual HFA3216121 BEAD CHIP CIM31J121NE (BEAD_120ohm_3216) 97E6200110 15-PIN D-SUB HDR10-15F-RL IBP-07R-20T(GIL-S-7P-S2L2-EF) : 97E6200734 CONN WAFER Right angle 97E6200790 DVI_29PIN 361R02-0 99E6203095 CONN WAFER IBP-09S-20T(GIL-S-9P-S2T2-EF) : Q4, Q5 TSBT3904-B TR CHIP SBT3904...
Page 22
All manuals and user guides at all-guides.com Q74A Service Manual IC EEPROM AT24C16N-10SU-2.7(SOIC 8P), 1AT24C16-- (ATMEL) ROHS 적용품 5XJ14R318E CRYSTAL QUARTZ 14.3181MHz XTAL2 20pF DIP CEXF1C471A C ELECTRO 16V 470uF 20% 10x12.5 TAP CE1, CE4 C ELECTRO 16V 1000uF 20% 10x16 TAP...
All manuals and user guides at all-guides.com Q74A Service Manual ▶ Q74A FUNCTION KEY B/D Part List Location Parts Name Parts Spec. Remark Parts Code 97E6500843-00 FUNCTION_PCB 1 LAYER(102.5*15mm) HL711S/D 99E6203075 CONN WAFER IBP-07S-20T(GIL-S-7P-S2L2-EF) 99E6203045 CONN WAFER IBP-04S-20T(GIL-S-4P-S2T2-EF) R1,R2 HRFS152JBA R CHIP 1/6W 1.5K J 1608...
All manuals and user guides at all-guides.com Q74A Service Manual ▶ Inverter & POWER BD Part List(FLF1742-20A) NO. Ref. PART TYPE 1st. Vendor 2nd. Vendor Q,ty 1 LF101 LFL002A 동흥 2 PC101 LTV-817B-M,TCET1103 LITON Vishay 3 BD101 KBP206G 4 D104,105...
All manuals and user guides at all-guides.com Q74A Service Manual ▶ Inverter & POWER BD Part List(FLF1742-20A) NO. Ref. PART TYPE 1st. Vendor 2nd. Vendor Q,ty 삼성 Rohm 41 R12 CR2012J433 삼성 Rohm 42 R26 CR2012J753 삼성 Rohm 43 R11 CR2012J134 삼성...
All manuals and user guides at all-guides.com 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-...