BenQ GL2450HE Service Manual Page 1

1 Applicable Country & Regions: Global Service Manual for BenQ: G2450HM: D-SUB + HDMI + DVI + AUDIO P/N: 9H.L7NLA.TBW GL2450HM: D-SUB + HDM

10 Audio line in Yes Yes Earphone Jack Yes Yes Power Supply Voltage Rating AC: 100~240V (Built-in) AC: 100~240V (Built-in) Power-On Mode &

11 5.1.1 Certification G2450HM Region Shipment Country (Pls select) Country Certification / Requirement Remark Request for Certification (Pls select

12 and VCCI V J-Moss GP Vender provide relevant informationand report Class Level: ★ ★★ ★★★ PC3R GP Vender provide relevant informatio

13 V Taiwan V BSMI Safety & EMC V Including BSMI certificate, BSMI report and BSMI authorization letter for BENQ if the applicant of B

14 Class Level: gold silver cuprum EPEAT GP Vender provide relevant informationand reportV V Mexico V NOM Safety V Europea

15 International V International V BenQ ecoFACTSGP Vender provide relevant informationand report Follow ecoFACTS Checklist in RFQ Internationa

16 GL2450HM//GL2450HE Region Shipment Country (Pls select) Country Certification / Requirement Remark Request for Certification (Pls select) Certific

17 and VCCI V J-Moss GP Vender provide relevant information and report Class Level: ★ ★★ ★★★ PC3R GP Vender provide relevant information

18 V Taiwan V BSMI Safety & EMC V Including BSMI certificate, BSMI report and BSMI authorization letter for BENQ if the applicant of B

19 Class Level: gold silver cuprum EPEAT GP Vender provide relevant information and reportV V Mexico V NOM Safety V European

2 Content Index Abbreviations & Acronyms ...

20 International V International V BenQ ecoFACTSGP Vender provide relevant information and report Follow ecoFACTS Checklist in RFQ Internationa

21 5.2 Panel Inspection Specification 1. Scope: 1.1 The incoming inspection standards shall be applied to TFT-LCD Modules (hereinafter called "

22 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 intend

23 Test Pattern Defect Full Black For bright dot(s) Full White For dark dot(s) Monotone Red /Green /Blue For bright and dark dot(s) Note 4: The j

24 Note 1: When L>=2W, defect count as liner defect. Note 2: D=1/2(W+L) Note 3: To verify the responsibility of following defects was caused b

25 7. Inspection judgment: 7-1 The judgment of the shipped lot (acceptance or rejection) should follow the sampling plan of MIL-STD-105E, single samp

26 Level 1 Cosmetic / Appearance / Alignment Service Visual Inspection & Cleaning  Cleaning. Always unplug your monitor from the wall outlet be

27 2.Connection 3.Install USB driver. 3.1. When insert the USB cable to PC USB port, will pop up a Hardware Wizard to help you install the USB drive

28 4. Install the ISP tool. 4.1.Copy the three files in one folder. Click “Finish” to complete the USB serial port driver inst

29 4.2. Double-click to run the ISP tool. 4.3. Set the parameters in “Device” window. Tick “WP Pin pull to high during ISP”.

3 Abbreviations & Acronyms A ADC Analog to Digital Converter AFC Automatic Frequency Control: control signal used to tune to the correct frequ

30 4.4. Connect to the monitor. Click “Connect”. If the tool communicate with monitor successfully, the tool will detect the flash type of monitor.

31 4.6. Set the restore address. Please fill “0x03F000” and “4KB” as follow. 4.7. Set parameter in “Auto” window. If you have set “Restore addre

32 4.8.Processing of upgrade. After clicking “Run”, the tool start to program. It is forbided to power off monitor or switch off connection during pr

33 5. Check the FW version after upgrade.（Take below figure as an instance） (1)Connect signal source and power cable to monitor and DC off it. (2) Pr

34 6. Troubleshooting. 6.1. Can’t Entry ISP Mode!! The method to cure it: (1) Click “Config” to check the port type is USB. If no selection of USB a

35 Upgrade by 715GT034-D 1. Materials list LPT cable (male to male) VGA cable 12V DC adapter TP

36 2. Connection 3.Install LPT driver. 3.1. Double-clickto install it. And restart PC after that. 4. Install the ISP tool. 4.1.Copy the three

37 4.2. Double-click to run the ISP tool. 4.3.Click the “Config” to set the relevant parameters as below. (1).Click “Config” item. (2).Se

38 4.4. Set the parameters in “Device” window. Tick “WP Pin pull to high during ISP”. 4.5. Connect to the monitor. Click “Connect”. If the tool com

39 4.6. Load the F/W you want to upgrade. 4.7. Set the restore address. Fill “0x03F000” and “4KB” for BENQ G2450HM/GL2450HM//GL2450HE.

4 NC Not Connected NVM Non Volatile Memory: IC containing TV related data (for example, options) O OSD On Screen Display P PC Personal Computer PC

40 4.8. Set parameter in “Auto” window. If you have set “Restore address”, please tick “Restore Data”. 4.9.Processing of upgrade. After clicking “R

41 4.9.Successful upgrade. When upgrade successful, there will be green Pass letter appearing. 5. Check the FW version after upgrade. (1)Connect si

42 (3)If the version is right, please do factory reset in user menu as below, or re-upgrade F/W as the above steps. The reset will turn off burn in m

43 Adjustment / Alignment Procedure The Control Panel 1. AUTO: Adjusts vertical position, phase, horizontal position and pixel clock automatically.

44 Mode hot key Press the ▼ key continually to switch between the 6 modes for the main window, including Standard, Movie, Game, Photo, sRGB, and Eco

45 Display Menu Available menu options may vary depending on the input sources, functions and settings. Menu options that are not available will beco

46 Picture Menu Available menu options may vary depending on the input sources, functions and settings. Menu options that are not available will beco

47 User Mode: The blend of the Red, Green and Blue primary colors can be altered to change the color tint of the image. Go to the succeeding Red, Gre

48 Item Function Operation Range Picture Mode Selects a picture mode that best suits the type of images shown on the screen. • Standard - for basic P

49 Color Format Determines the color space (RGB or YUV) based on the following detected video signal: • D-Sub (VGA) from PC: The default Color Format

5 1. About this Manual The purpose of Service Manual is to provide a guide line to engineers to repair different models. The appearance and capabilit

50 decrease the volume. Mute Mutes the audio input Press the ▲ or ▼ keys to change the settings. • ON • OFF Audio Select (for models with HDMI input

51 from those shown on the right, depending on the product supplied in your region. • Polish • Japanese • Czech • Traditional Chinese • Hungarian • S

52 by hot key. Auto Power off Sets the time to power off the monitor automatically in power saving mode. Press the ENTER key to select this option. P

53 Display Timing Table For G2450HM/GL2450HM//GL2450HE Note: P: Preset Mode NP: None Preset Mode FS: Fail Save Mode (show “out of range”, but still c

54 P 1024x768 80.00 60.24 74.93 DMT-8 P 1024x768 78.75 60.02 75.03 DMT-9 FS 1024x768 94.50 68.68 85.00 DTV P 1152x720 66.75 44.86 60 NP 1152x864 94

55 P 1440x900 136.75 70.6 75 P 1600X900-R 97.75 55.54 59.98 P 1600x1000-R 108.5 61.648 59.910 CVT-10 NP 1600x1000 132.25 62.14 59.87 NP 1600x10

56 HDMI CEA-861D General Parameters Horizontal V-Sync Parameters Freq. Code HDMI I/p Pixel Clock (unit: MHz) H-Sync(unit: kHz)V-Sync(unit:

57 Factory OSD Menu The service page needs to include that information: Model name, S/N, Vender, panel, scalar, F/W version, Monitor on time, Backlig

58 Level 2 Circuit Board and Standard Parts Replacement Product Exploded View Note: The parts information listed below are for reference only, and

59 15 SPEAKER 1 PCS 16 PLATE 4 PCS 17 REAR COVER 1 PCS 18 HINGE 1 PCS 19 STAND 1 PCS 20 BASE 1 PCS 21 FOOT PAD 6 PCS SCREW Item Part N

6 2. Introduction This section contains general service information, please read through carefully. It should be stored for easy access place. 2.1 R

60 Six Angles’ View

61 Product Disassembly/Assembly Disassembly 1) Remove the base Place the monitor face down on a smooth surface. Be careful to avoid scratch and inju

62 3) Remove the rear cover Remove the screw in red to remove the rear cover: Pull apart bezel & rear cover. Note: Be careful, the BEZEL CLIP i

63 Note: The positions of the clips on the rear cover are as follow. There are some small gaps between CLIPS. It’s suggested to separate bezel and re

64 5) Remove the AC cover from the mainframe. 6) Remove the boards from the main frame. Remove screws in red; remove the black rubberized fabri

65 7) Remove the speaker. Pull at the foot of the speaker strongly as follow picture. 8) The panel 9) The bezel. The foot of the speakerThe foot

66 Assembly 1) Assemble the speaker on the main frame. Pull at the foot of the speaker strongly. The wire of the speaker will be traversed from the m

67 3) Assemble the main board and power board on the main frame. Connect main board and power board; connect speaker and power board. Lock the main

68 5) Assemble the panel on the bezel. 6) Assemble the main frame and the key board. Connect key board and main board, panel and power board, p

69 7) Assemble the rear cover. Lock the mainframe and rear cover as follow picture. 8) Assemble the stand. Push the stand as follow picture.

7 Operation 1. To protect your eyesight, please refer to the user manual to set the optimal screen resolution and the viewing distance. 2. To reduc

70 9) Assemble the base.

71 Block Diagram Main Board D-Sub Connector (CN101) Panel Interface (CN452) Key Control Interface (CN401) Crystal 14.31818MHz (

72 Power Board GL2450HM//GL2450HE 715G5000P01000003H EMI filter Start Resistor (R908) PWM Control (IC901)

73 G2450HM 715G5000P01001003H EMI filter Start Resistor (R908) PWM Control (IC901) Transformer AC input 5VBridge Rectifier and Filter Fe

74 Schematic Diagram Main Board 715G4997M0E000004L C72010N 50VVCC1.8 5+5VQ702NC/2N3904S-RTK/PSR70410K 1/16W 5%VCC1.8C7050.1UF 16V+5V3,4,5,7R717 NC/

75 DDCA_SCL5D104BAV99312R118 47RGIN 5DDC_WP4,5R110 47RU101CAT24C02WI-GT312345678A0A1A2VSSSDASCLWPVCCD102BAV70312C108NC/22P 50VVCC3.3C107NC/22P 50VESD

76 HD2- 5R504NCU501AZ1045-04SU.R 7G123 456I/O1GNDI/O2 I/O3VDDI/O4DATA2+Q502LMBT3904LT1GHDMI 1_D0-HDMI_DET 5HDMI 1_D2-DATA1+R509 1K 1/16W 5%DDC_WP3,5H

77 RIN3CSZC4402.2U10VR405 1K 1/16W 5%C4190.1UF 16VAVDD_AUVCC3.3WPR4200.05RAGNDFB406 120OHM1 2VOLUME 7LED_GR4283.9K1/16WSDIR425 0R05 1/10WR406 1K 1/16

78 PA1PB2PB[0..9]PA[0..9]PA6PB4PA8PB1PA2PB9PB8PA1PA4PA9PA5PA3CN452CONN123456789101112131415161718192021222324252627282930R453300 OHMPA0PA[0..9]5PB9PA

79 FB608 120OHM1 2R623 33K 1%AGNDCN602PHONEJAC K12354C601 NC/0.47uF 16VHP_ OU TL1R62610K 1/16W 5%CN606CONN1234+5VAGNDAGNDSE-1R619 0R05 1/16WR617NC/22

8 3. General Description This new LCD (Liquid Crystal Display) monitor BenQ G2450HM&GL2450HM/GL2450HE offers numerous features and functions, for

80 Power Board GL2450HM//GL2450HE 715G5000P01000003H R909 100 OHM 1/4WR905470OHM1/10WFootprint:80LL17T-2EZD902NC/ MTZJ T-72 16BFB903BEAD1 2R919150

81 DIMQ806AO48861234 5678S2G2S1G1 D1D1D2D2R81430K 1% 1/10WR837NCR81010K1/10WR801300K 1/8W 5%R809 20K 1/10WCN801N/A12345R8311R 1%R833NCC806100pF50VR81

82 G2450HM 715G5000P01001003H C9161000PF500VC912100N 50VtNR901NTCR12ZD901MTZJ20B!CN901SOCKET123!C9021000pF+16V+C9181000UF 25V!R92610 OHM 1/4WIC901LD

83 R81182 KOHM +-1% 1/8W+16VR8172.2 OHM 1/4WC823 4.7uF 25VR8391M 1/10W 5%R8457.5K 1/10W 5%C81947PF 5% SL 3KVZD802RLZ5.6B1 2R8091M 1/10W 5%+5ViLV3D803

84 Key Board 715G5048K01000004I ZD008NC/UDZSNP5.6B1 2ZD006NC/UDZSNP5.6B1 2GNDZD001NC/UDZSNP5.6B1 20.673VPOWERMENUGNDCN001 pin1SMD: downDIP: upGNDCN00

85 Troubleshooting Frequently asked questions (FAQ) The image is blurred: Read the instructions on the link "Adjusting the Screen Resolution

86 Is the prompt on the display illuminated in orange? If the LED is illuminated in orange, the power management mode is active. Press any button

87 No Power OK NGNo power Check power cable is tightened? Check Power “On/Off” is “On”? Re-plug the power ca

88 No Video (Power LED Green) No Video (Power LED Green)Press the power button is OK?Check the LVDS/FFC cable or pane

89 DIM OK The end OK The end OK The end DIM (image overlap, focus or flicker) Reset in factory mode Set to t

9 5. Product Overview 5.1 Monitor Specifications G2450HM GL2450HM/GL2450HE Conf. 2 D-sub (include component source) + DVI-D + HDMI + speaker

90 Color is not optimal NG Color is not optimalMiss color Color shift Replace the signal cablePull out the signal cable and check the scre

91 PCB LAYOUT Main Board 715G4997M0E000004L

92

93 Power Board GL2450HM//GL2450HE 715G5000P01000003H

94

95 G2450HM 715G5000P01001003H

96

97

98 Key Board 715G5048K01000004I

99 Appendix 1 – Screw List / Torque Part No. Type Description Quantity Torque 0D1G1030 6120 D3*6 POWER BOARD & MAINFRAME 2 6 ± 1kgf.c