hit counter script
Dell 1908FPC Service Manual
  1. Manuals
  2. Brands
  3. Dell Manuals
  4. Monitor
  5. 1908FPC
  6. Service manual

Dell 1908FPC Service Manual

19" lcd color monitor
Hide thumbs Also See for 1908FPC:
Table of Contents

Advertisement

Quick Links

See also: Service Manual
19" 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.........................................................20
5.1.Software Flow Chart...........................................20
5.2.Electrical Block Diagram...................................22
6. Mechanical Instructions.............................................24
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
7. Schematic Diagram................................................31
7.1 Main Board............................................................31
7.2 Power Board...................................................36
7.3 USB Board....................................................38
7.4 Key Board.....................................................40
8. PCB Layout...............................................................41
8.1. Main Board..........................................................41
8.2. Power Board........................................................43
8.3. Key Board..........................................................44
8.4 USB Board.....................................................45
9. Maintainability.....................................................46
9.1.Equipments and Tools Requirement......................46
9.2.Trouble Shooting.................................................48
11.ISP Instruction.......................................................54
12. Monitor Exploded View.....................................60
13. BOM List................................................................61
14. Different Parts List...........................................77
SAFETY NOTICE
1
Dell 1908FPC
Horizontal Frequency
30 kHz to 81 kHz
Page

Advertisement

Table of Contents
loading

Related Manuals for Dell 1908FPC

Summary of Contents for Dell 1908FPC

  • Page 1: Table Of Contents

    19" LCD Color Monitor Dell 1908FPC Service Service Service Horizontal Frequency 30 kHz to 81 kHz Table of Contents Description Page Description Page Table Of Contents..……....……...…..1 7. Schematic Diagram………………......31 Revision List.…......………....……..2 7.1 Main Board..…………........31 Important Safety Notice.….……….…....……..3 7.2 Power Board……………........36 1.Monitor Specifications..…......………..4...

  • Page 2: Revision List

    19" LCD Color Monitor Dell 1908FPC Revision List Revision Release Date Revise history TPV model T96GGCHKFDDGDP T96GGCHKFDDEDP T96SGCHKFDDEDP Jan.-08-2006 Initial Release T96SGCHKFDDFDP T96SGCHKFDDGDP T96SGCHKFDDMDP FEB-01-2007 Add the torque setting at page 49...

  • Page 3: Important Safety Notice

    19" LCD Color Monitor Dell 1908FPC 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

    19" LCD Color Monitor Dell 1908FPC 1. Monitor Specifications Screen type Active matrix - TFT LCD Panel Type LM190E08-TLB2 LPL 19 inches (19-inch viewable image size) Size LCD Panel Pixel pitch 0.294 mm Viewable angle 160° (vertical) typ, 160° (horizontal) typ...

  • Page 5: Lcd Monitor Description

    19" LCD Color Monitor Dell 1908FPC 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

    19" LCD Color Monitor Dell 1908FPC 3. Operation instructions 3.1 General Instructions NOTE: If you change the settings and then either proceed to another menu or exit the OSD menu, the monitor automatically saves those changes. The changes are also saved if you change the settings and then wait for the OSD menu to disappear.

  • Page 7: Control Buttons

    Using the input select button, select the desired input to be tested either Analog Input or Digital Input. Disconnect the video cable from the video card and the Dell Self-test Feature Check dialogue box will appear if the display is operating correctly.
  • Page 8 19" LCD Color Monitor Dell 1908FPC The Menu button is used to open and exit the on-screen display (OSD), and exit from menus and sub-menus. See Using the OSD Menu. OSD menu / select Use this button to launch Brightness menu.

  • Page 9: Adjusting The Picture

    19" LCD Color Monitor Dell 1908FPC Use the power button to turn the monitor on and off. The green light indicates the monitor is on and fully functional. An amber light indicates power save mode. Power Button and Indicator 3.3 Adjusting the Picture...
  • Page 10 19" LCD Color Monitor Dell 1908FPC Even though your computer recognizes your monitor on startup, the Auto Auto Adjust Adjustment function optimizes the display settings for use with your particular setup. Select to activate automatic setup and adjustment. The following dialog appears...
  • Page 11 19" LCD Color Monitor Dell 1908FPC Normal Preset Normal Preset is selected to obtain the default (factory) color settings. This setting is also the “sRGB” standard default color space. Blue Preset is selected to obtain a bluish tint. This color setting is typically used for Blue Preset text based applications (spreadsheets, programming, text editors, etc.).
  • Page 12 19" LCD Color Monitor Dell 1908FPC NOTE: You can also lock or unlock the OSD by pushing and holding the Menu button for 15 seconds. Select to have the OSD display in one of five languages (English, French, Language Spanish, German, or Japanese).
  • Page 13 19" LCD Color Monitor Dell 1908FPC brightness, and contrast and OSD hold time to the factory defaults. The language of the OSD does not change. IR — This feature will help reduce minor cases of image retention. Enable LCD Conditioning: If an image appears to be stuck on the monitor, select LCD Conditioning to help eliminate any image retention.
  • 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-screen if the monitor cannot sense a video signal.

  • Page 15: Input/Output Specification

    19" LCD Color Monitor Dell 1908FPC 4. Input/Output Specification 4.1 Input Signal Connector VGA Connector: Pin No. Description Pin No. Description Red Video DDC +5V Green Video GND-sync Blue Video DDC data Self-test H-Sync R-Ground V-Sync G-Ground DDC clock B-Ground...

  • Page 16: Factory Preset Display Modes

    19" LCD Color Monitor Dell 1908FPC Universal Serial Bus (USB) Interface This monitor supports High-Speed Certified USB 2.0 interface. Data Rate Power Consumption High speed 480 Mbps 2.5W (Max., each port) Full speed 12 Mbps 2.5W (Max., each port) USB ports: Low speed 1.5 Mbps...

  • Page 17: Panel Specification

    19" LCD Color Monitor Dell 1908FPC 4.4 Panel Specification M220Z1-L01C1 ZBD 4.4.1 Display Characteristics 4.4.2 Optical Characteristics Ta= 25°C, VLCD=5.0V, fV=60Hz, fCLK=54MHz, IBL=7.5mA...

  • Page 18: Definition Of Pixel Defects

    19" LCD Color Monitor Dell 1908FPC 4.5 Definition of Pixel Defects 4.5. 1.Description These inspection standards shall be applied to LCD Module supplied by CHI MEI Optoelectronics Corporation. 4.5.2 The environmental condition of inspection The environmental condition and visual inspection shall be conducted as below.
  • Page 19 19" LCD Color Monitor Dell 1908FPC Note) continued c. Extraneous substances which can be wiped out, like Finger Print, Particles, are not considered as a defect. b. Defects which is on the Black Matrix(outside of Active Area) are not considered asa defect.

  • Page 20: Block Diagram

    19" LCD Color Monitor Dell 1908FPC 5. Block Diagram 5.1 Software Flow Chart...
  • Page 21 19" LCD Color Monitor Dell 1908FPC 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 22: Electrical Block Diagram

    19" LCD Color Monitor Dell 1908FPC 5.2 Electrical Block Diagram 5.2.1 Main Board...
  • Page 23 19" LCD Color Monitor Dell 1908FPC 5.2.2 Inverter and Power Board AC input Bridge Rectifier Transformer Rectifier diodes and Filter Start Circuit R903, R904, R905 Feedback Over Circuit Voltage Protect Control ON/OFF Rectify and MOSFET Transformer Output Lamp Circuit Over...

  • Page 24: Mechanical Instructions

    19" LCD Color Monitor Dell 1908FPC 6. Mechanical Instructions Note: Put the monitor on a soft, flat and clean cushion, wear gloves and ESD ring. Tools: 2 Power screwdrivers（φ=5mm、L=60mm）; 1 small cross screwdriver; turnbuckle driver; Setting: Power screwdriver torque A=12 KgF. Cm; torque B=6 KgF. Cm; some other small screws must be drove by manual, such as screws for keyboard, the recommend torque is 0.8 KgF.
  • Page 25 19" LCD Color Monitor Dell 1908FPC 2. Pry the monitor up then find out the hooks’ position, use the tool (like the picture or other card) to insert into the gap of bezel and rear cover. 3. Turn over the monitor as the Fig, hold the rear cover , then slightly remove it.
  • Page 26 19" LCD Color Monitor Dell 1908FPC Remove the 1. Remove the 4 screws shield torque B 2. Remove the USB2 board cover torque B OR manual 3. Remove the 6 screws torque B...
  • Page 27 19" LCD Color Monitor Dell 1908FPC 4. Disconnect the wire harness between USB1 and USB2 . 5. Push the main shield as the arrowhead direction Disconnect the connector Disconnect the pin between key and main connector pin boards...
  • Page 28 19" LCD Color Monitor Dell 1908FPC Remove USB 1. Remove the 8 screws and main board torque B 2. Disconnect the connector wire torque B 3. Disconnect the wire harness between main board and panel...
  • Page 29 19" LCD Color Monitor Dell 1908FPC 4. Disconnect the wire holder Remove the Remove the 5 screws power board torque B Disconnect the wire harness Disconnect between power board and wire harness lamps...
  • Page 30 19" LCD Color Monitor Dell 1908FPC Remove the 2 screws and Remove USB2 the USB2 Board. board torque B Remove the 4 screws (left Remove the and right) main frame torque B or manual The end...

  • Page 31: Schematic Diagram

    19" LCD Color Monitor Dell 1908FPC 7. Schematic Diagram 7.1 Main Board...
  • Page 32 19" LCD Color Monitor Dell 1908FPC...
  • Page 33 19" LCD Color Monitor Dell 1908FPC...
  • Page 34 19" LCD Color Monitor Dell 1908FPC...
  • Page 35 19" LCD Color Monitor Dell 1908FPC...

  • Page 36: Power Board

    19" LCD Color Monitor Dell 1908FPC 7.2 Power Board...
  • Page 37 19" LCD Color Monitor Dell 1908FPC...

  • Page 38: Usb Board

    19" LCD Color Monitor Dell 1908FPC 7.3 USB Board...
  • Page 39 19" LCD Color Monitor Dell 1908FPC...

  • Page 40: Key Board

    19" LCD Color Monitor Dell 1908FPC 7.4 Key Board...

  • Page 41: Pcb Layout

    19" LCD Color Monitor Dell 1908FPC 8. PCB Layout 8.1 Main Board...
  • Page 42 19" LCD Color Monitor Dell 1908FPC...

  • Page 43: Power Board

    19" LCD Color Monitor Dell 1908FPC 8.2 Power Board...

  • Page 44: Key Board

    19" LCD Color Monitor Dell 1908FPC 8.3 Key Board...

  • Page 45: Usb Board

    19" LCD Color Monitor Dell 1908FPC 8.4 USB Board...

  • Page 46: Maintainability

    19" LCD Color Monitor Dell 1908FPC 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 47: Trouble Shooting

    19" LCD Color Monitor Dell 1908FPC 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 48 19" LCD Color Monitor Dell 1908FPC No picture (LED orange) No picture Measure U602 PIN2=1.8V U601 PIN2=3.3V Replace U601, U602 X301 oscillate waveform is normal Replace X301 Whether the reset of the Scalar IC is useful? Check U302, C333, C329, ZD301...
  • Page 49 19" LCD Color Monitor Dell 1908FPC White screen White screen Measure Q603 base X301 oscillate waveform is normal is high level? Replace X301 Check Q603, Q602 is Check reset circuit of broken or CN501 solder? U401 is normal Check Correspondent Check Correspondent component.
  • Page 50 19" LCD Color Monitor Dell 1908FPC 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 C905(+) Check bridge rectified circuit and F901 circut Check start voltage for the pin3 of IC901...
  • Page 51 19" LCD Color Monitor Dell 1908FPC No Backlight Check CN902=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 Check IC801 PIN1/PIN15 PWM wave...
  • Page 52 19" LCD Color Monitor Dell 1908FPC 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 53: White-Balance, Luminance Adjustment

    19" LCD Color Monitor Dell 1908FPC 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 Minolta-CA210 MEM. Channel 0 to 6500 K colors, MEM.

  • Page 54: Isp Instruction

    19" LCD Color Monitor Dell 1908FPC 11. ISP Instruction 11.1 Software requirement and connection Operating system requirement (1) Microsoft windows OS. (2) 100M free hard-drive space. (3) 1 free parallel port for DDC2BI communication. The hardware Connection 12V Input Link to Dell...
  • Page 55 19" LCD Color Monitor Dell 1908FPC 11.2 Install the software (Gprobe 5.0) for ISP Writer A. Double-click the Install software Select the folder where you would like Genesis Gprobe 5 to be installed Completing the Genesis Gprobe 5 setup wizard...
  • Page 56 19" LCD Color Monitor Dell 1908FPC B. Next, install the Update software Completing the update 1 for Genesis Gprobe 5.0 setup wizard...
  • Page 57 19" LCD Color Monitor Dell 1908FPC 11.3 Run program After the installation, a short-cut icon will appear on your desktop, double click it will run the program. Note: Firstly, you can check the I²C normal or not by inputting the “test” in the position where to load MCU software.
  • Page 58 19" LCD Color Monitor Dell 1908FPC (2). Select Commands → Batch:...
  • Page 59 LPL. You have to choose Dell_1908FP_LPL.txt Click open. (3). Unplug the Dell AC power, until the LED indicator is off, press Enter or Execute button, when the .txt of MCU is in gray, for example , re-plug Dell AC power, Writer is in progress.

  • Page 60: Monitor Exploded View

    19" LCD Color Monitor Dell 1908FPC 12. Exploded View...

  • Page 61: Bom List

    19" LCD Color Monitor Dell 1908FPC 13. BOM List T96GGCHKFDDGDP Location Part Number Description 012G6212 2 RUBBER PAD 023G3178700 3A LOGO 026G 800700 6A S/N LABEL 033G4885 VH L BUTTON RELEASE 034G1757 VH B REAR VENT LEFT 034G1758 VH B...
  • Page 62 19" LCD Color Monitor Dell 1908FPC C601 067G215L221 4N KY25VB220-M-L8*11.5MM C602 067G215L221 4N KY25VB220-M-L8*11.5MM C611 067G215V221 4N KY25VB220-M-CC3 8*11.5MM C615 067G215Y2207NV KY50VB22M-CC3 5*11 C610 067G215Y2207NV KY50VB22M-CC3 5*11 C501 067G215Y2207NV KY50VB22M-CC3 5*11 C325 067G215Y2207NV KY50VB22M-CC3 5*11 C319 067G215Y2207NV KY50VB22M-CC3 5*11 C316...
  • Page 63 19" LCD Color Monitor Dell 1908FPC R205 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R206 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R207 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R208 061G0402100 RST CHIPR 10 OHM +-5% 1/16W R209 061G0402100...
  • Page 64 19" LCD Color Monitor Dell 1908FPC R608 061G0402104 RST CHIPR 100 KOHM +-5% 1/16W R411 061G0402220 0F RST CHIPR 220 OHM +-1% 1/16W R412 061G0402220 0F RST CHIPR 220 OHM +-1% 1/16W R413 061G0402220 0F RST CHIPR 220 OHM +-1% 1/16W...
  • Page 65 19" LCD Color Monitor Dell 1908FPC R323 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R318 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R317 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R316 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R315 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W...
  • Page 66 19" LCD Color Monitor Dell 1908FPC C310 065G0603104 12 CER2 0603 X7R 16V 100N P C308 065G0603104 12 CER2 0603 X7R 16V 100N P C219 065G0603104 12 CER2 0603 X7R 16V 100N P C209 065G0603104 12 CER2 0603 X7R 16V 100N P...
  • Page 67 19" LCD Color Monitor Dell 1908FPC L201 071G 56K121 M CHIP BEAD L301 071G 56K121 M CHIP BEAD L302 071G 56K121 M CHIP BEAD L303 071G 56K121 M CHIP BEAD L304 071G 56K121 M CHIP BEAD L305 071G 56K121 M...
  • Page 68 19" LCD Color Monitor Dell 1908FPC KEPC6QD2 KEY BOARD 089G176J 810A FFC CABLE Q52G6022 28 TAPE 065G0603104 12 CER2 0603 X7R 16V 100N P 065G0603104 12 CER2 0603 X7R 16V 100N P SW01 077G 605 1 AL GP SMD SWITCH...
  • Page 69 19" LCD Color Monitor Dell 1908FPC R916 061G152M30858F 0.3 OHM 5% 2W 096G 29 6 H.S. TUBE 705G 780 93 26 D921/IC922 ASS'Y IC922 056G 563 37 KA278R12CTU TO-220F-4L 090G6263 1 HEAT SINK D921 093G 60257 DIODE SB1060FCT ITO-220AB BY PAN JIT...
  • Page 70 19" LCD Color Monitor Dell 1908FPC Q806 057G 763 14 AM9945N RJ808 061G0805000 0 OHM 1/10W RJ807 061G0805000 0 OHM 1/10W R837 061G0805100 10 OHM 1/10W R842 061G0805100 10 OHM 1/10W R917 061G0805101 RST CHIPR 100 OHM +-5% 1/8W R836...
  • Page 71 19" LCD Color Monitor Dell 1908FPC R834 061G0805562 RST CHIPR 5.6 KOHM +-5% 1/8W R814 061G0805563 56KOHM 1/10W R823 061G0805753 CHIP 75KOHM 1/10W R833 061G0805753 CHIP 75KOHM 1/10W R918 061G0805753 CHIP 75KOHM 1/10W F902 061G1206000 0 OHM 1/8W R801 061G1206000...
  • Page 72 19" LCD Color Monitor Dell 1908FPC C813 065G0805152 22 CHIP 1500PF 25V X7R 0805 C812 065G0805152 22 CHIP 1500PF 25V X7R 0805 C823 065G0805152 22 CHIP 1500PF 25V X7R 0805 C815 065G0805152 31 1.5N/50V C814 065G0805152 31 1.5N/50V C907 065G0805221 32...
  • Page 73 19" LCD Color Monitor Dell 1908FPC R822 061G212Y625 KT MGFR 6.2MOHM +-5% 1/2W C904 065G 1K152 1T 1.5NF/1KV Z5F+-10% C931 065G 450104 4T 0.1UF Z5V 50V C920 065G517K332 1T6213 CER 3300PF K 500V TDK C921 065G517K472 1T6921 CER CAP 4700PF K 500V...
  • Page 74 19" LCD Color Monitor Dell 1908FPC 002F6370045 M4 RIVET SQ85G7242A SHIELD COVER 020F 027 2B DIECASTING 019F 588 3 SPRING 015F8185 1 BRACKET 015F8186 1 BRACKET 0M1F 130 4 47 SCREW 002F6570108 M4 RIVET 002F6450138 00 RIVET 015F6310 1 BRACKET...
  • Page 75 19" LCD Color Monitor Dell 1908FPC R741 061G0603000 RST CHIPR 0 OHM +-5% 1/10W R755 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R749 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R747 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R745 061G0603103...
  • Page 76 19" LCD Color Monitor Dell 1908FPC C724 065G0603104 12 CER2 0603 X7R 16V 100N P C723 065G0603104 12 CER2 0603 X7R 16V 100N P C722 065G0603104 12 CER2 0603 X7R 16V 100N P C721 065G0603104 12 CER2 0603 X7R 16V 100N P...

  • Page 77: Different Parts List

    19" LCD Color Monitor Dell 1908FPC 14. Different Parts List Diversity Of T96GGCHKFDDEDP Compared With T96GGCHKFDDGDP Location Part No. Description E750L 750GLG90E8B41N PANEL LCD LM190E08-TLB4 LPL Diversity Of T96SGCHKFDDEDP Compared With T96GGCHKFDDGDP Location Part No. Description 0M1G 130 5225 CR3...
  • Page 78 19" LCD Color Monitor Dell 1908FPC C808 065G0805682 32 MLCC 0805 CAP 6800PF K 50V X7R D802 093G 64 33 DIO SIG SM BAV99 (PHSE)R D804 093G 64 33 DIO SIG SM BAV99 (PHSE)R ZD801 093G 39GA01 T RLZ5.6B SQ15G82712B...
  • Page 79 19" LCD Color Monitor Dell 1908FPC C808 065G0805682 32 MLCC 0805 CAP 6800PF K 50V X7R D802 093G 64 33 DIO SIG SM BAV99 (PHSE)R D804 093G 64 33 DIO SIG SM BAV99 (PHSE)R ZD801 093G 39GA01 T RLZ5.6B SQ15G82712B...

Table of Contents