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Dell E176FPc Service Manual
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Dell E176FPc Service Manual

Dell E176FPc Service Manual

17” lcd monitor
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Dell E176FPc

Service Manual

17" LCD MONITOR
DELL E176FPc
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR
CHANGES, ERRORS OR OMISSIONS.
1

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Summary of Contents for Dell E176FPc

  • Page 1: Service Manual

    Dell E176FPc Service Manual 17” LCD MONITOR DELL E176FPc THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR...

  • Page 2: Revision List

    Dell E176FPc Revision List Revision Release Date Revise history TPV model T780KCDHK8DLNP Aug.-26-2005 Initial Release T780KGDHK8DZNP T780KGDHK8DENP Add” Definition Of Pixel Defects” Mar.-31-2006 Add” Max Brightness measurement” April-25-2006 on Page49 Mar.-30-2007 Add Mechanical Instruction in item 6 Add the CBPC,PWPC Version Dec.-20--2007...

  • Page 3: Table Of Contents

    Dell E176FPc Table of contents Table of contents ---------------------------------------------------------------------------------------------------------------- 03 1. Monitor Specifications ------------------------------------------------------------------------------------------------------04 2. LCD Monitor Description -------------------------------------------------------------------------------------------------- 05 3. Operation instructions --------------------------------------------------------------------------------------------------06 3.1 General Instructions ------------------------------------------------------------------------------------------------06 3.2 Control buttons --------------------------------------------------------------------------------------------------------06 3.3 On Screen Menu/Display (OSD) ---------------------------------------------------------------------------------------07 3.4 Adjusting the Picture - ----------------------------------------------------------------------------------------------08 4.

  • Page 4: Monitor Specifications

    Dell E176FPc 1. Monitor Specifications Screen type Active matrix - TFT LCD LM170E01-TLB3/TLB4 (LPL) Panel Type CLAA170EA07 (CPT) Size 430mm(17.0") LCD Panel Pixel pitch 0.264mm(H) x 0.264mm(V) Viewable angle LM170E01-TLB3/TLB4: 70°/70° (H) 75°/65° (V) (typ.) (CR>=10) CLAA170EA07: 70°/70° (H) 67°/63° (V) (typ.)

  • Page 5: Lcd Monitor Description

    Dell E176FPc 2. LCD Monitor Description The LCD MONITOR will contain a main board, PWPC board, keypad 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

    3. Operation instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. - The power cord should be connected.

  • Page 7: On Screen Menu/Display (Osd)

    Dell E176FPc 3.3 On Screen Menu/Display (OSD) Direct-Access Functions Function Adjustment Method Auto adjustment 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 In Progress...

  • Page 8: Adjusting The Picture

    Dell E176FPc 3.4 Adjusting the Picture 1. With the menu off, push the 'MENU' button to open the OSD system and display the main features menu. Function icons Main Menu Menu icon Sub-Menu name Resolution 2. Push the - and + buttons to move between the function icons. As you move from one icon to another, the function name is highlighted to reflect the function or group of functions (sub-menus) represented by that icon.
  • Page 9 Dell E176FPc Icon Menu Name and Description Sub-menus EXIT This is used to exit out of the 'Main menu'. Positioning: 'Positioning' moves the viewing area around on the monitor screen. Horizontal When making changes to either the 'Horizontal' or 'Vertical' settings, no changes will Vertical occur to the size of the viewing area;...
  • Page 10 Dell E176FPc Phase If satisfactory results are not obtained using the 'Phase' adjustment, use the 'Pixel Clock' adjustment and then use 'Phase' again. NOTE: This function may change the width of the display image. Use the 'Horizontal' function of the 'Position' menu to center the display image on the screen.
  • Page 11 Dell E176FPc User Preset 'User Preset': Use the plus and minus 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 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 will appear on-screen if the monitor cannot sense a video signal.

  • Page 13: Input/Output Specification

    Dell E176FPc 4. Input/Output Specification 4.1 Input Signal Connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION Red Video Green Video Logic Ground Blue Video DDC-Serial Data Detector Pin H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground VGA Connector layout 4.2 Factory Preset Display Modes...

  • Page 14: Power Supply Requirements

    Dell E176FPc 4.3 Power Supply Requirements A/C Line voltage range 100 V ~ 240 V± 10 % 50 ± 3Hz, 60 ± 3Hz A/C Line frequency range Input Voltage transients 280 volts AC for 10 sec @40 Current 0.6A max. at 100V, 0.35A max. at 240 V <...

  • Page 15: Panel Specification

    Dell E176FPc 4.4 Panel Specification Display Characteristics (For LM170E01-TLB3 panel) Display Characteristics (For LM170E01-TLB4 panel) Display Characteristics (For CLAA170EA07 panel)
  • Page 16 Dell E176FPc 4.4.2 Optical Characteristics (For LM170E01- TLB3/TLB4 panel)
  • Page 17 Dell E176FPc Optical Characteristics (For CLAA170EA07 panel)

  • Page 18: Block Diagram

    5. Block Diagram 5.1 Monitor Exploded View...

  • Page 19: Software Flow Chart

    5.2 Software Flow Chart...
  • Page 20 Dell E176FPc 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. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.

  • Page 21: Electrical Block Diagram

    Dell E176FPc 5.3 Electrical Block Diagram 5.3.1 Main Board LCD Interface (CN101) Flash Memory Scalar GM2621 SST25VF020-20- 4C-SAE (Include MCU, ADC, OSD) (U402) (U401) EPR_SDA DB15_SDA, EPR_SCL DB15_SCL OSD Control Interface EEPROM D-Sub EEPROM (U404) (CN403) M24C16-MN6T Connector M24C02WMN6 (U403)
  • Page 22 Dell E176FPc 5.3.2 Inverter/Power Board...

  • Page 23: Mechanical Instruction

    Dell E176FPc 6. Mechanical Instruction 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 24 Dell E176FPc 3. Take off the bezel Remove rear cover : Turn over the monitor as the Fig, hold the rear cover, and then slightly remove it. Black tape Remove the two screws by Torque B Install: Fix the keyboard cable by black...
  • Page 25 Dell E176FPc Remove the shield : 1. Remove the screw by Torque B or by manual and remove the shield ,then remove the back light connector Remove the connector Remove the two screws by manual or torque = 3kgF.Cm remove the main frame...
  • Page 26 Dell E176FPc EVA washers Install: Fix the LVDS connector by black tape and EVA washers. Note: Make LVDS connector’s LVDS Cable metal side adown for HYDIS Black tape AND LG panel and upturned for AU panel. Remove the nine screws by...
  • Page 27 Dell E176FPc Screw pillar Screw AC ground line as the ground figure and should be laid at the left of screw pillar. Note: The green line can’t be pressed under the power board. Note: The pins can’t gore the blue and purple lines.

  • Page 28: Schematic Diagram

    Dell E176FPc 7. Schematic Diagram 7.1 Main Board C448 C447 C439 0.1uF/16V SPI_3V3 D402 VGA_5V +3.3V_VDD D403 D404 D405 SPI_3V3 BAV99 BAV99 BAV99 FB410 (10 mil, VGA_5V 0.047uF R434 C432 RED+ 60 OHM 1/16W 0.047uF D407 R441 C436 Pins 6/7/8 are R/G/B...
  • Page 29 Dell E176FPc 3.3V_PVDD 3.3V_AVDD 3.3V_LAVDD 3.3V_DVDD 1.8V_DVDD 1.8V_AVDD +3.3V_VDD 3.3V_DVDD +1.8V_VDD 1.8V_AVDD FB401 C402 C403 C404 C405 C406 C407 FB404 C410 C411 C412 C413 C414 120OHM 120OHM C409 C401 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 22uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V...
  • Page 30 Dell E176FPc +3.3V_VDD +3.3V_VDD R457 R458 1/16W CN403 1/16W CONN R459 47K 1/16W R460 LED_O LED_G Q401 Q403 1/16W LED_G LED_O (3) PMBS3904 PMBS3904 LED_GREEN LED_ORANGE KEY_AUTO KEY_MENU R461 1/16W R462 1/16W KEY_RIGHT KEY_LEFT R463 1/16W R464 1/16W KEY_ONOFF R465...

  • Page 31: Panel Interface

    Dell E176FPc LVDS_O[0..9] CN101 LVDS_O0 LVDS_O0 RXO0- RXO0+ LVDS_O1 LVDS_O1 LVDS_O2 RXO1- RXO1+ LVDS_O3 CN102 LVDS_O2 LVDS_O4 RXO2- RXO2+ LVDS_O5 LVDS_O3 LVDS_O6 RXOC- RXOC+ LVDS_O7 RXO0+ LVDS_O1 LVDS_O4 LVDS_O8 RXO3- RXO3+ LVDS_O9 RXO0- LVDS_O0 LVDS_O5 LVDS_E0 RXE0- RXE0+ LVDS_E1 RXO1+...
  • Page 32 Dell E176FPc +12V CN701 ON_OFF R705 4.7K 1/16W PBIAS D704 +3.3V_VDD VCC12V VCC12V FB701 SR24 VCC5V VCC5V U701 AIC1084-33PM VOUT CON402(PITCH 2.00) C707 C706 C708 C702 C703 C701 C704 22uF/16V 0.1uF/16V 0.1uF/16V R708 1/16W R710 1/16W R707 Q703 C711 BRIGHTNESS...

  • Page 33: Power Board

    Dell E176FPc 7.2 Power Board R921 C921 1/2W 0.001uF/500V DB901 KBP206G D921 FMB29L L903 T901 F902 1/8W +12V R908 C923 C931 C925 R903 R906 C905 100K 1000uF/25V 1000uF/25V 470uF/25V ZD903 5.1K 1/8W 0.0015uF/2KV R922 C922 PTZ7.5B C904 1/2W 0.001uF/500V 100uF/450V...
  • Page 34 Dell E176FPc L201 +12V Q202 Q203 120UH R221 R222 R223 R224 CN201 C201 DTA144WKA R201 IRF5305S 2.4K 1/4W 2.4K 1/4W 2.4K 1/4W 2.4K 1/4W CONN 0.1uF/25V C203 C204 2.4K 1/10W PT201 0.1uF/25V ZD201 Q201 C202 470uF/25V R202 RLZ11B DTC144WKA 0.1uF/25V...

  • Page 36: Layout

    Dell E176FPc 8. PCB Layout 8.1 Main Board...
  • Page 37 Dell E176FPc...

  • Page 38: Power Board

    Dell E176FPc 8.2 Inverter/Power Board...
  • Page 39 Dell E176FPc...

  • Page 40: Key Board

    Dell E176FPc 8.3 Key Board...

  • Page 41: Maintainability

    Dell E176FPc 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 42: Trouble Shooting

    Dell E176FPc 9.2 Trouble shooting 9.2.1 Main Board No display Check main board Power; is there DC level output? Check U701 pin 2= 3.3V? U702 Measured CN701 pin5/6 = 12 V? pin 2= 1.8V? Is there any shortage or cold...
  • Page 43 Dell E176FPc Panel Power Circuit Check the PPWR panel power relative circuit, Q704, Q706; in normal operation, When LED Check C101 should have response from =green, V-R725 should =5V,If PPWR 0V to 5V when we switch the power no-response when the power switch turn on and...
  • Page 44 Dell E176FPc U401-data Output Check GM2621 (U401) Replace GM2621 (U401) or Signal output (PIN 7 -16, PIN 31 - 40) replace Main board. Is the waveform ok? If Main Board being replaced, please Replace panel do the DDC – content reprogrammed,...
  • Page 45 Dell E176FPc 9.2.2 Inverter/Power Board No Power Check to CN701 Pin2=12V Check Interface board Check AC line volt 110V or 220V Check AC line Check the voltage of C904(+) Check F901, bridge rectified circuit Check start voltage for the pin8 of IC901...
  • Page 46 Dell E176FPc No Backlight Check C201 (+) =12V Check F902 Check ON/OFF signal Check Interface board Check IC201 pin9=12V ? Change Q201 or Q202 Check the pin1 of IC201 have saw tooth wave Change IC201 Check D201 (-) have the output of square wave at short time.
  • Page 47 Dell E176FPc 9.2.3 Key Board OSD is unstable or not working Is Keypad board connecting normally? Connect Keypad Board Is Button Switch normally? Replace Button Switch Is Keypad board normally? Replace Keypad Board Check main board...

  • Page 48: White Balance Adjustment

    Dell E176FPc 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. Channel 4 to 9300 K colors, MEM.

  • Page 49: Edid Content

    Dell E176FPc 21. Repeat above procedure (item 5,6,7) until chroma 7120 RGB value meet the tolerance =100±2 22. Move cursor to “ Exit/Save” sub-menu and press MENU key to save adjust value and exit. Turn the POWER-button off to on to quit from factory mode.

  • Page 50: Isp User Manual

    Dell E176FPc 12. ISP (In System Program) User Manual 12.1 Connect ISP Writer preparation action Connect RXD and TXD of PC to RXD (P3.0) and TXD (P3.1) of CPU through RS-232. a. There are two ways to entering Reboot Mode. The settings for Reboot Mode is as follow Both P2.6 P2.7 are LOW and RESET pin is HIGHT.

  • Page 51: To Use Isp Writer

    Dell E176FPc 12.2 To Use ISP WRITER (take E153FP for example) Press the “–“ key at front bezel and plug the AC power cord in, then the MCU enter ISP mode; a. You will enter the window as follow after executing the ispwriter.exe file.
  • Page 52 Dell E176FPc b. Click the “Select Chip” button, and choose the type you’re going to program.
  • Page 53 Dell E176FPc c. Click the “Select Bank0” button and selecting a file which a binary Format required.
  • Page 54 Dell E176FPc d. Select the communication Setting: Port Name e. Click the “ConNect” button.

  • Page 55: Executing Isp

    Dell E176FPc f. Click “Program all” to start programming. 12.3. Executing ISP a. “Program All” button that will execute erase and program and verify. Then you can get the window as follow, and click “OK” to complete ISP process. b. Complete the ISP process, click exit LD button to reset monitor.

  • Page 56: Check List

    Dell E176FPc 13. Check List 1) After replacing LCD Main board and panel, Check if white-balance is within the specs, then re-writing DDC is necessary. The white-balance value for each common color temperature: 9300 parameter is x=283±28, y=297±28, Y = 180 ±10 cd/m 6500 parameter is x =313±28, y=329±28, Y = 180 ±10 cd/m...
  • Page 57 Dell E176FPc 7. Select Exit to the upper menu after completing the adjustment. Then press POWER OFF to exit and save it. 3) Steps for writing DDC 1. Employ PC, and connect the DDC-writing instrument and the instrument that is ready for writing into DDC to the power of 12V.
  • Page 58 Dell E176FPc Notes: 1. Make sure the system time of PC is in accordance with the real time before writing. 2. The schematic picture is just as an example for description; the exact content of the DDC is dependent on the serial number of the BARCORD of this model.

  • Page 59: Bom List

    Dell E176FPc 14. BOM List Part NO Description Quantity Unit Remark CONVERSION BOARD CBPC780KCDDLP VER:A00,V6C08 For CPT panel CONVERSION BOARD CBPC780KGDDLP VER:A00,V6C08 For LPL panel PWPC1742CPD2P POWER BOARD VER:A00 For CPT panel PWPC1742LGD2P POWER BOARD VER:A00 For LPL panel 15G6261 1...
  • Page 60 Dell E176FPc 44G3770 1 EPS(L) 44G3770 2 EPS(R) 44G3770700 2A CARTON 44G3770BRO 1 PAPER BLOCK 45G 88606 8 PE BAG FOR BASE 45G 88607DE8 PE BAG 1186 SMALL TAPE 52G6020 2DE9 FILM PROTECT 52G6022 1500 SMALL TAPE 52G6025 11848 MYLAR FOR POWER BOARD...
  • Page 61 Dell E176FPc CN101 33G8043 24 H CONNECTER CN403 33G8019 8C H CONNEETER CN405 88G 35315F H D-SUB 15PIN CN701 33G8027 12 WAFER 2*6P 2.0MM R/A X401 93G 22 53 CRYSTAL 14.318MHzHC-49U 715G1565 1 MAIN BOARD PCB C102 65G0603104 12 CER2 0603 X7R 16V 100N...
  • Page 62 Dell E176FPc C442 65G0603220 31 CER1 0603 NP0 50V 22P P C443 65G0603220 31 CER1 0603 NP0 50V 22P P C444 65G0603104 12 CER2 0603 X7R 16V 100N C445 65G0603104 12 CER2 0603 X7R 16V 100N C446 65G0603104 12 CER2 0603 X7R 16V 100N...
  • Page 63 Dell E176FPc Q401 57G 417 4 PMBS3904/PHILIPS-SMT(04 Q403 57G 417 4 PMBS3904/PHILIPS-SMT(04 Q703 57G 417 4 PMBS3904/PHILIPS-SMT(04 Q704 57G 763 1A AP2305N Q706 57G 417 4 PMBS3904/PHILIPS-SMT(04 R101 61L0603472 RST SM 0603 RC0603 4K7 R402 61L0603249 0F CHIP 249OHM 1/16W 1%...
  • Page 64 Dell E176FPc R449 61L0603222 RST SM 0603 RC0603 2K2 R450 61L0603472 RST SM 0603 RC0603 4K7 R451 61L0603472 RST SM 0603 RC0603 4K7 R452 61L0603472 RST SM 0603 RC0603 4K7 R453 61L0603221 RST SM 0603 RC0603 220R R454 61L0603221 RST SM 0603 RC0603 220R...
  • Page 65 Dell E176FPc 715G1564 1 65G0603104 12 CER2 0603 X7R 16V 100N 65G0603104 12 CER2 0603 X7R 16V 100N 89G176S 8 4 FFC CABLE LED01 81G 14501 KT CHIP LED SW01 77G 605 1 AL GP SMD SWITCH SW02 77G 605 1 AL GP...
  • Page 66 Dell E176FPc CN203 33G8021 2D AC CONN.2P R/A 87210-0236 CN204 33G8021 2D AC CONN.2P R/A 87210-0236 CN901 33G8029 3A H B2P3S-VH CN902 95G8014 12523 WIRE D901 93G 6026W52T FR107 DB901 93G 50460502 KBP206G IC902 56G 139 3A PC123Y22FZOF L201 73G 253515 L...
  • Page 67 Dell E176FPc D903 93G 6432P LL4148 D923 93G 6432P LL4148 D924 93G 6432P LL4148 F902 61L1206000 RST SM 1206 JUMP MAX 0R IC201 56G 608 1 TL1451ACD IC901 56G 379 54 NCP1203D60R2G BY ON Q201 57G 760 5 DTC144WKA BY ROHM SMT...
  • Page 68 Dell E176FPc R915 61L0805220 CHIP 22 OHM 5% 0805 1/8 R916 61L0805221 CHIPR 220 OHM +-5% 1/8W R917 61L0805103 CHIPR 10K OHM +-5% 1/8W R919 61L0805203 CHIPR 20KOHM +-5% 1/8W R924 61L0805102 CHIPR 1K OHM +-5% 1/8W R925 61L1206000 RST SM 1206 JUMP MAX 0R...
  • Page 69 Dell E176FPc Q901 6G 31502 1.5MM RIVET Q902 57G 420 PP T 2PA733P Q903 57G 419 PP T 2PC945P R221 61G 17218252T 1.8KOHM 5% 1/4W R222 61G 17218252T 1.8KOHM 5% 1/4W R223 61G 17218252T 1.8KOHM 5% 1/4W R224 61G 17218252T 1.8KOHM 5% 1/4W...

  • Page 70: Definition Of Pixel Defects

    Dell E176FPc M1G 130 6125 SCREW M1G 130 8120 SCREW M1G 140 8225 SCREW M3X8 Q1G 130 8 47 SCREW 15. Definition Of Pixel Defects 15.1 CLAA170EA 07...
  • Page 71 Dell E176FPc...
  • Page 72 Dell E176FPc 15.2 LM170E01-TLB3 / LM170E01-TLB4 15.2.1 Dot Defect 15.2.1.1 Bright Dot Dots (sub-pixels) which appeared brightly in the screen when the LCM displayed with dark pattern. - R, G or B 1 dot --------------------------------- 0 Max - Adjacent 2 dots -------------------------------- 0 Max...
  • Page 73 Dell E176FPc Where, W: Width L: Length D: Average diameter =(a+b)/2 15.2.4 Line Defect All kinds of line defects such as vertical, horizontal or cross are not allowed. 15.2.5 Bezel Appearance Scratches, minor bents, stain, particles on the Bezel frame are not considered as a defect.

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