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Dell E178FPC Service Manual

17" lcd color monitor
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17" LCD Color Monitor
Service
Service
Service
Table Of Contents..........................................................1
Revision List..................................................................2
Important Safety Notice................................................3
1.Monitor Specifications.................................................4
2.LCD Monitor Description........................................5
3.Operation Instructions...............................................6
3.1.General Instructions...........................................6
3.2.Control Buttons...................................................7
3.3 Adjusting the Picture..............................................9
4. Input/Output Specification.......................................15
4.1.Input Signal Connector.........................................15
4.2.Factory Preset Display Modes.................................16
4.3.Power Supply Requirements...................................16
4.4.Panel Specification............................................17
4.5.Definition of Pixel Defects.....................................18
5.Block Diagram.........................................................22
5.1.Software Flow Chart...........................................22
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Table of Contents

Page Description
5.2.Electrical Block Diagram...................................24
6. Mechanical Instructions.............................................26
7. Schematic Diagram................................................32
7.1 Main Board............................................................32
7.2 Power Board...................................................36
8. PCB Layout...............................................................38
8.1. Main Board..........................................................38
8.2. Power Board........................................................41
8.3. Key Board..........................................................43
9. Maintainability.....................................................44
9.1.Equipments and Tools Requirement......................44
9.2.Trouble Shooting.................................................45
11.ISP Instruction.......................................................52
12. Monitor Exploded View.....................................56
13. BOM List................................................................57
14. Different Parts List...........................................67
SAFETY NOTICE
1
Dell E178FPC
Horizontal Frequency
30 kHz to 81 kHz
Page

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  Summary of Contents for Dell E178FPC

  • Page 1: Table Of Contents

    17" LCD Color Monitor Dell E178FPC Service Service Service Horizontal Frequency 30 kHz to 81 kHz Table of Contents Description Page Description Page Table Of Contents..……....……...…..1 5.2.Electrical Block Diagram………………..…..…..24 Revision List.…......………....……..2 6. Mechanical Instructions…..........26 Important Safety Notice.….……….…....……..3 7. Schematic Diagram………………......32 1.Monitor Specifications..…......………..4...
  • Page 2: Revision List

    17" LCD Color Monitor Dell E178FPC Revision List Revision Release Date Revise history TPV model T76AM9HKFDDDN T76AM9HKFDDGN Apr.-09-2007 Initial Release T76SM9HKFDDDN T76SM9HKFDDGN...
  • Page 3: Important Safety Notice

    17" LCD Color Monitor Dell E178FPC 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.
  • Page 4: Monitor Specifications

    17" LCD Color Monitor Dell E178FPC 1. Monitor Specifications Screen type Active matrix - TFT LCD Panel Type M170EG01 VD00 ZBD DELL AUO 17 inches (17-inch diagonal viewable image size) Size LCD Panel Pixel pitch 0.264 mm Viewable angle Viewing angle 160  (vertical) typ, 160  (horizontal) typ...
  • Page 5: Lcd Monitor Description

    17" LCD Color Monitor Dell E178FPC 2. LCD Monitor Description The LCD monitor will contain a main board, power board, 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.
  • Page 6: Operation Instructions

    17" LCD Color Monitor Dell E178FPC 3. Operation instructions 3.1 General Instructions 1. With the menu off, press the MENU button to open the OSD system and display the main features menu. Function icons Main Menu C Menu icon Sub-Menu name Resolution 2.
  • Page 7: Control Buttons

    17" LCD Color Monitor Dell E178FPC 3.2 Control Buttons Menu selection button Brightness Contrast / Down(-) button Auto-Adjust / Up(+) button Power On/Off button with LED indicator The 'MENU' button is used to open the on-screen display (OSD), select function icons, exit from menus and sub-menus, and to exit the OSD.
  • Page 8 17" LCD Color Monitor Dell E178FPC Use this button to activate automatic setup and adjustment. The following dialog will appear on screen as the monitor self-adjusts to the current input: Auto Adjust Auto Adjust In Progress Auto Adjustment button allows the monitor to self-adjust to the incoming video signal.
  • Page 9: Adjusting The Picture

    17" LCD Color Monitor Dell E178FPC necessary. "+" increase 'brightness' " - "decrease 'brightness' The 'Contrast' function adjusts the degree of difference between darkness and lightness on the display screen. "+" increase the 'contrast' "-" decrease the 'contrast' 3.3 Adjusting the Picture...
  • Page 10 17" LCD Color Monitor Dell E178FPC hotkey. Pixel Clock The Phase and Pixel Clock adjustments allow you to more closely adjust your monitor to your preference. Select Image Settings in the main OSD to access these settings. Use the - and + buttons to adjust interference. Minimum: 0 ~ Maximum: 100...
  • Page 11 17" LCD Color Monitor Dell E178FPC User Preset Use the +/- buttons to increase or decrease each of the three colors (R, G, B) independently, in single digit increments, from '0' to '100'. NOTE: 'Color temperature' is a measure of the 'warmth' of the image colors (red/green/blue).
  • Page 12 17" LCD Color Monitor Dell E178FPC Language sets the OSD to display in one of five languages (English, Español, Language Français, Deutsch, and Japanese). NOTE: The language chosen affects only the language of the OSD. It has no effect on any software running on the computer.
  • Page 13: Automatic Save

    17" LCD Color Monitor Dell E178FPC NOTE: Press any button on the monitor to terminate LCD Conditioning at any time. DDC/CI (Display Data Channel/Command Interface) allows you to adjust the monitor parameters (brightness, color, balance, etc.) via software applications on your PC.
  • Page 14 See Specifications for the Horizontal and Vertical frequency ranges addressable by this monitor. Recommended mode is 1280 X 1024 @ 60Hz. NOTE: The floating 'Dell - self-test Feature Check' dialog appears on the screen if the monitor cannot sense a video signal.
  • Page 15: Input/Output Specification

    17" LCD Color Monitor Dell E178FPC 4. Input/Output Specification 4.1 Input Signal Connector VGA Connector: Pin No. Description Pin No. Description Video-Red Computer 5V/3.3V Video-Green GND-sync Video-Blue DDC data Self-test H-sync GND-R V-sync GND-G DDC clock GND-B VGA Connector layout...
  • Page 16: Factory Preset Display Modes

    17" LCD Color Monitor Dell E178FPC 4.2 Factory Preset Display Modes Vertical Frequency Pixel Clock Sync Polarity Display Mode Horizontal (Hz) (MHz) (Horizontal/Vertical) Frequency (kHz) VGA, 720 x 400 31.5 70.1 28.3 VGA, 640 x 480 31.5 60.0 25.2 VESA, 640 x 480 37.5...
  • Page 17: Panel Specification

    17" LCD Color Monitor Dell E178FPC 4.4 Panel Specification M170EG01 VD00 ZBD DELL AUO 4.4.1 Display Characteristics...
  • Page 18: Definition Of Pixel Defects

    17" LCD Color Monitor Dell E178FPC 4.4.2 Optical Characteristics The optical characteristics are measured under stable conditions at 25 ℃ (Room Temperature): 4.5 Definition of Pixel Defects 4.5.1 Inspection environment conditions: ◆ Room temperature: 20 ~ 25 C ◆ Humidity: 65 ± 5% RH.
  • Page 19: Electrical Inspection Specification

    17" LCD Color Monitor Dell E178FPC 4.5.2. Classification of defects: Defects are classified as major defects and minor defects according to the degree of defectiveness defined herein. Major defects: A major defect is a defect that is likely to result in failure, or to reduce materially the usability of the product for its intended purpose.
  • Page 20 17" LCD Color Monitor Dell E178FPC *Inspection patterns: Standard inspection patterns of dot defect are listed below. AU uses these patterns as standard criteria for judging dot defect. Please inform AU if any other pattern is to be used to examine dot defect.
  • Page 21 17" LCD Color Monitor Dell E178FPC 4.5.5 Outside dimension specification: Note 1: Thickness doesn’t include bending. Note 2: Display tolerance definition Note 3: Panel gap (Y) definition:...
  • Page 22: Block Diagram

    17" LCD Color Monitor Dell E178FPC 5. Block Diagram 5.1 Software Flow Chart...
  • Page 23 17" LCD Color Monitor Dell E178FPC 1) MCU Initializes. 2) Is the EEprom blank? 3) Program the EEprom by default values. 4) Get the PWM value of brightness from EEprom. 5) Is the power key pressed? 6) Clear all global flags.
  • Page 24: Electrical Block Diagram

    17" LCD Color Monitor Dell E178FPC 5.2 Electrical Block Diagram 5.2.1 Main Board XGA/SXGA LVDS OUTPUT VCC1.8 VCC3.3 GNDR GNDR GNDG GNDG VCC1.8 Vcc3.3 GNDB GNDB PC5V HSY NC HSY NC VSY NC VSY NC DDCA_SDA DDCA_SDA PC5V DDCA_SCL DDCA_SCL...
  • Page 25 17" LCD Color Monitor Dell E178FPC 5.2.2 Inverter and Power Board AC input Bridge Rectifier Transformer Rectifier diodes and Filter Start Circuit R905 Feedback Over Circuit Voltage Protect Control IC ON/OFF Output MOSFET Transformer Circuit Lamp Over Feedback ON/OFF Voltage...
  • Page 26: Mechanical Instructions

    17" LCD Color Monitor Dell E178FPC 6. Mechanical Instructions Tools: 2 Power screwdrivers (φ=5mm,L=60mm); 1 small cross screwdriver; turnbuckle driver; Setting: Power screwdriver torque A=11 kgF. Cm; torque B=6 kgF. Cm Note: Firstly, put the monitor on a soft, flat and clean surface, wear gloves.
  • Page 27 17" LCD Color Monitor Dell E178FPC 3. Turn over the monitor as the Fig, hold the rear cover, and then slightly remove it. Remove the bezel: Remove the small shield as the arrowhead direction, disconnects the keyboard connector, and then remove the bezel.
  • Page 28 17" LCD Color Monitor Dell E178FPC Remove the two screws by Torque Remove the main frame: Remove the 4 screws by manual or torque = 3kgF.Cm and remove the main frame...
  • Page 29 17" LCD Color Monitor Dell E178FPC EVA washers Install: Fix the LVDS connector by black tape and EVA washers. Note: Make LVDS connector’s Black tape metal side adown for HYDIS, CPT, SAMSUNG and LG panel and upturned for AU panel.
  • Page 30 17" LCD Color Monitor Dell E178FPC Screw pillar Ground cable Install: The ground cable should be laid above the other two cables and below the screw pillar. Install: Note: The pins can’t touch the blue and purple lines.
  • Page 31 17" LCD Color Monitor Dell E178FPC The end Black tapes 45℃ Install: The angle between CCFL line and vertical direction should be 45 degree.
  • Page 32: Schematic Diagram

    17" LCD Color Monitor Dell E178FPC 7. Schematic Diagram 7.1 Main Board CN405 R460 0Ω 1/10W RED+ R434 56Ω 1/10W C432 0.047uF RED- GREEN+ R461 0Ω 1/10W R435 56Ω 1/10W C433 0.047uF GREEN- BLUE+ R462 0Ω 1/10W R436 56Ω 1/10W C434 0.047uF...
  • Page 33 17" LCD Color Monitor Dell E178FPC VCC1.8 FB401 VDDC VDVI VMPLL AVDD VDDP VDDC VPLL VCC3.3 FB402 AVDD VCC3.3 FB404 VDVI VCC1.8 600 OHM 0.1uF 16V 0.1uF 16V C403 0.1uF 16V VCC3.3 VCC3.3 10uF/16v C404 C405 C406 C402 600 OHM 600 OHM 0.1uF 16V...
  • Page 34 17" LCD Color Monitor Dell E178FPC VLCD NC(CN102) CN101 LVA3P A[0..9] LVA3M A[0..9] LVA3P LVA3P LVB0M RXO0- RXO0+ LVB0P LVACKP LVA3M LVA3M LVB1M RXO1- RXO1+ LVB1P LVACKM LVACKP LVB2M RXO2- RXO2+ LVB2P LVA2P LVACKM LVBCKM RXOC- RXOC+ LVBCKP LVA2M LVA2P...
  • Page 35 17" LCD Color Monitor Dell E178FPC VCTRL R701 4.7KΩ 1/10W 1KΩ 1/10W R702 51Ω 1/10W CN701 BL_ON R705 R706 BL_ADJ VCC1.8 C708 C702 0.1uF 16V 4.7uF M 16V R707 Adj_BACKLIGHT 4 VCC1.8 Q701 R708 PMBS3904 4.7KΩ 1/10W D701 10KΩ 1/10W...
  • Page 36: Power Board

    17" LCD Color Monitor Dell E178FPC 7.2 Power Board R951 47   1/8W R952 47   1/8W C920 BD901 0.001uF/500V 2A 800V D920 J901 FCH10A15 TIN COATED T901 L921 3.5UH F902 J902 +12V TIN COATED C922 C923 C924 R909 680uF/25V...
  • Page 37 17" LCD Color Monitor Dell E178FPC RJ802 PT801 CN801 RJ801   1/8W RJ803 S80GL17T36V   1/8W   1/10W RJ804   1/8W R836 C835   1/10W +12V C816 15PF/6KV 33G8021-2E-U CN802 R802 R804 R805 300K 1/8W   N.C C828   1/8W  ...
  • Page 38: Pcb Layout

    17" LCD Color Monitor Dell E178FPC 8. PCB Layout 8.1 Main Board...
  • Page 39 17" LCD Color Monitor Dell E178FPC...
  • Page 40 17" LCD Color Monitor Dell E178FPC...
  • Page 41: Power Board

    17" LCD Color Monitor Dell E178FPC 8.2 Power Board...
  • Page 42 17" LCD Color Monitor Dell E178FPC...
  • Page 43: Key Board

    17" LCD Color Monitor Dell E178FPC 8.3 Key Board...
  • Page 44: Maintainability

    17" LCD Color Monitor Dell E178FPC 9. Maintainability 9.1 Equipments and Tools Requirement 1. Voltage meter 2. Oscilloscope 3. Pattern Generator 4. LCD Color Analyzer 5. Service Manual 6. User Manual...
  • Page 45: Trouble Shooting

    17" LCD Color Monitor Dell E178FPC 9.2 Trouble shooting 9.2.1 Main Board No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the...
  • Page 46 17" LCD Color Monitor Dell E178FPC No picture (LED orange) No picture Measure U701 PIN2=3.3V C702 “-”=1.8V Replace Q702, U702 X401 oscillate waveform is normal Replace X401 Whether the reset of the Scalar IC is useful? Check C418, D414, D415, R404...
  • Page 47 17" LCD Color Monitor Dell E178FPC White screen White screen Measure Q706 base X401 oscillate waveform is normal is high level? Replace X401 Check Q704 is broken or Check reset circuit of CN101 solder? U401 is normal Check Correspondent Check Correspondent component.
  • Page 48 17" LCD Color Monitor Dell E178FPC 9.2.2 Power/Inverter Board No power Check CN902 pin3, 4 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C907(+) Check bridge rectified circuit and F901 circut Check start voltage for the pin8 of IC901...
  • Page 49 17" LCD Color Monitor Dell E178FPC No Backlight Check CN902 Pin 3, 4=12V Check adapter and F902 Check ON/OFF signal Check Interface board or main board Check IC801 PIN2=5V Change on/off circuit Check IC801 PIN13 have triangle wave Change IC801, C807-C810...
  • Page 50 17" LCD Color Monitor Dell E178FPC 9.2.3 Keypad Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Is Key Pad Board normally? Replace Key Pad Board...
  • Page 51: White-Balance, Luminance Adjustment

    17" LCD Color Monitor Dell E178FPC 10. White balance, Luminance adjustment Approximately 2 Hours should be allowed for warm up before proceeding White-Balance adjustment. Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 3 to 6500 K colors, MEM.
  • Page 52: Isp Instruction

    17" LCD Color Monitor Dell E178FPC 11. ISP Instruction Configure and procedure It is a windows-based program, which cannot be run in MS-DOS. System and equipment requirements (1). An i486 (or above) personal computer or computer or compatible. (2). Microsoft operation system Window 95/98/2000/XP.
  • Page 53 17" LCD Color Monitor Dell E178FPC Step 2: Click OK and click Read, select program Bin file, bring up Fig.3 Fig.3...
  • Page 54 17" LCD Color Monitor Dell E178FPC Step3: Click open and OK, bring up Fig.4 and Fig.5 Fig.4 Fig.5...
  • Page 55 17" LCD Color Monitor Dell E178FPC Step 4: Click Auto and Run, bring up Fig.6 Fig.6 Step 5: When appear Verify OK, writer finished as shown Fig.7 Fig.7...
  • Page 56: Monitor Exploded View

    17" LCD Color Monitor Dell E178FPC 12. Exploded View...
  • Page 57: Bom List

    087G 501 14 RF AC SOCKET 095G 900584 WIRE HARNESS 095G8021 3X549 WIRE HARNESS 096G 29 6 H.S. TUBE 750GLU70G1D12Z000D PANEL M170EG01 VD00 ZBD DELL AUO CBPC6AM9DLQ1 CONVERSION BOARD CN403 033G8019 8C JH WAFER CN701 033G8027 12 WAFER 2*6P 2.0MM R/A...
  • Page 58 17" LCD Color Monitor Dell E178FPC CN101 033G8043 24 BH CONNECTOR 040G 457624 1B LABEL-CPU 040G 45762412B CBPC LABEL C408 067G305V100 3 105℃ 10UF +-20% 16V C418 067G305V100 3 105℃ 10UF +-20% 16V C717 067G305V100 3 105℃ 10UF +-20% 16V...
  • Page 59 17" LCD Color Monitor Dell E178FPC R404 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R406 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R408 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R413 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R415 061G0603103...
  • Page 60 17" LCD Color Monitor Dell E178FPC R723 061G0603513 RST CHIPR 51 KOHM +-5% 1/10W R434 061G0603560 RST CHIPR 56 OHM +-5% 1/10W R435 061G0603560 RST CHIPR 56 OHM +-5% 1/10W R436 061G0603560 RST CHIPR 56 OHM +-5% 1/10W R438 061G0603750 9F...
  • Page 61 17" LCD Color Monitor Dell E178FPC C443 065G040222031T 0402 MLCC 22PF J 50V C417 065G0402224A5T MLCC 0402 0.22UF K 10V X C432 065G040247312T 0402 MLCC 47NF K 16V C433 065G040247312T 0402 MLCC 47NF K 16V C434 065G040247312T 0402 MLCC 47NF K 16V...
  • Page 62 17" LCD Color Monitor Dell E178FPC 715G1564 1 3 KEY BOARD PCB PWPC742AD8P POWER BOARD CN804 033G8021 2E U WAFER CN803 033G8021 2E U WAFER CN802 033G8021 2E U WAFER CN801 033G8021 2E U WAFER CN901 033G8029 3A H B2P3S-VH...
  • Page 63 17" LCD Color Monitor Dell E178FPC Q900 705GQ7K0 57005 Q900 ASS'Y Q900 057G 600 35 STP8NK80ZFP HS4 Q900 090G6264 2 HEAT SINK 0M1G1730 8128 CR3 SCREW IC901 056G 379 61 LD7575PS SOP-8 IC801 056G 608 10 IC OZ9938GN-B SOIC-16 Q803...
  • Page 64 17" LCD Color Monitor Dell E178FPC R924 061G0805360 1F 3.6KOHM 1/10W 1% R826 061G0805391 390 OHM 1/10W 1% R841 061G0805431 RST CHIPR 430 OHM +-5% 1/8W R825 061G0805561 560 0805 R835 061G0805561 560 0805 R814 061G0805563 56KOHM 1/10W F903 061G1206000...
  • Page 65 17" LCD Color Monitor Dell E178FPC C912 065G0805104 32 CHIP 0.1U 50V X7R C806 065G0805105 22 CHIP 1UF 25V X7R 0805 C813 065G0805152 32 CHIP 1500PF 50V X7R 0805 C812 065G0805152 32 CHIP 1500PF 50V X7R 0805 C822 065G0805152 32...
  • Page 66 17" LCD Color Monitor Dell E178FPC R822 061G212Y305 KT MGFR 3M OHM +-5% 1/2W C910 065G 1K152 1T6052 1.5nF /1K Y5P+-10% C921 065G517K102 5T 1000PF 10% Y5P 500V C920 065G517K102 5T 1000PF 10% Y5P 500V C911 067G215D2207KT CAP 105 22UF M 50V ℃...
  • Page 67: Different Parts List

    17" LCD Color Monitor Dell E178FPC 14. Different Parts List Diversity Of T76AM9HKFDDGN Compared With T76AM9HKFDDDN Location Part No. Description 750GLU70G1D22Z000D PANEL M170EG01 VD0A ZBD DELL AUO Diversity Of T76SM9HKFDDDN Compared With T76AM9HKFDDDN Location Part No. Description E089B 089G 728LAA 2D SIGNAL CABLE...