BenQ E24-5500 Service Manual
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BenQ E24-5500 Service Manual

Lcd
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See also: User Manual
Applicable Country & Regions: Europe
Service Manual for BenQ:
LCD E24-5500
(D-SUB + HDMI + Audio + USB +
S-Video+ YPbPr + SPDIF +
SCART + Common Interface +
Black Chassis Colors)
P/N: 9H.V1875.TBE
Product Service Manual – Level 1~2
Notice:
For RO to input specific "Legal Requirement" in specific NS regarding to responsibility and
liability statements.
Please check BenQ's eSupport web site, http://esupport.benq.com, to ensure that you have the
most recent version of this manual.
First Edition (Dec. 2010)
©
Copyright BenQ Corporation 2010. All Right Reserved.
Version: 1st
Date:12-20-2010
1

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Summary of Contents for BenQ E24-5500

  • Page 1 Notice: For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liability statements. Please check BenQ’s eSupport web site, http://esupport.benq.com, to ensure that you have the most recent version of this manual. First Edition (Dec. 2010) ©...

  • Page 2: Table Of Contents

    Content Index Abbreviations & Acronyms ............................3   1. About this Manual ..............................5   1.1 Important ................................5   1.2 Trademark ................................5   2. Introduction ................................6   2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS............. 6   2.2 Safety Warning and Notice ..........................

  • Page 3: Abbreviations & Acronyms

    Abbreviations & Acronyms Analog to Digital Converter Automatic Frequency Control: control signal used to tune to the correct frequency BenQ BenQ Corporation BTSC Broadcast Television System Committee Central Process Unit CVBS Composite Video Blanking and Synchronization Digital Light Processing / Texas Instruments®...
  • Page 4 Not Connected Non Volatile Memory: IC containing TV related data (for example, options) On Screen Display Personal Computer Printed Circuit Board (or PWB) Remote Control transmitter Red, Green and Blue. The primary color signals for TV. By mixing levels of R, G and B, all colors (Y/C) are Read Only Memory Data signal on I...

  • Page 5: About This Manual

    Service Manual that provide repair engineer various choice. 1.1 Important Only trained service personnel who are familiar with this BenQ Product shall perform service or maintenance to it. Before performing any maintenance or service, the engineer MUST read the “Important Safety Information”.

  • Page 6: Introduction

    2. Introduction This section contains general service information, please read through carefully. It should be stored for easy access place. 2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal requirement by EU (European Union) for the global electronics industry which sold in EU and some counties also require this requirement.

  • Page 7: Compliance Statement

    BenQ service center for assistance. 6. To avoid possible electric shock, do not dissemble or repair the monitor. 7. If a bad smell or an abnormal sound appears to come from the monitor, contact your nearest BenQ service center for assistance immediately.

  • Page 8: General Description

    3. General Description This new LCD (Liquid Crystal Display) monitor BenQ E24-5500 offers numerous features and functions, for example:  LED  Minimal space requirements thanks to slim casing  Optimum ergonomic characteristics (totally distortion-free, excellent picture definition and color purity right into the corners) ...

  • Page 9: Product Overview

    5. Product Overview 5.1 Monitor Specifications Backlight type Size 24″ Resolution 1920 x 1080 Brightness (cd/m ) (typical) 250nits Display Contrast ratio 3000:1 Dynamic Contrast Ratio 20M:1 Response time 25ms Color depth/colors 8bits Viewing angle (up/down/ left/right) 178/178/178/178 degrees Analog PAL/SECAM TV tuner system Digital...
  • Page 10 RF tuner HDMI Composite Component S-Video Input terminals SCART D-sub (VGA) Common Interface PC Audio In Video out Output terminals SPDIF out Headphone jack Power input 100 ~ 240 V Power Power consumption <60W Standby mode <0.5W Dimensions with stand (W x H x D mm) 587.3mm (W) x 424.7mm (H) x184.9mm (D) Dimensions without stand (W x H x D mm) 587.3mm (W) x 369.9mm (H) x 45.8mm (D)

  • Page 11: Packing

    5.2 Packing When packing the monitor into the carton, please follow the pictures as below. 1. Using the EPE bag to pack the monitor without base 2. Using the EPS to pack the monitor...
  • Page 12 3. Putting the power cord, remote control, screws, battery, and user manual in the position as the picture shows below. The power cord The battery The remote control and screws User manual...

  • Page 13: Customer Acceptance

    Note: If BenQ defect undefined failure, and it judged that is reduce the merchandise ability, BenQ CM Inform this defect. After that parties make communication and decide how to solve.
  • Page 14 . Visual inspection shall be down with the distance from eyes to the sample 45 cm. . Display mode: Primary mode SXGA 60Hz 11.0 TEST EQUIPMENTS 11.1 BenQ PCs with BenQ display adapter or other specific display adapter, which is agreed upon by both parties 11.2 Test program by AUO 11.3 Power saving test tool 11.4 Minolta color analyzer (CA-210)

  • Page 15: Level 1 Cosmetic / Appearance / Alignment Service

    Level 1 Cosmetic / Appearance / Alignment Service Visual Inspection & Cleaning Item Description Remark Offset < =0.2mm Offset include Tilt(θ) <= 0.2mm X/Y axis Offset < =0.2mm Offset include Tilt(θ) <= 0.2mm X/Y axis Offset < =0.2mm Offset include Tilt(θ) <= 0.2mm X/Y axis...
  • Page 16 Offset < =0.2mm Offset include Tilt(θ) <= 0.2mm X/Y axis  AR     R  Shift Tolerance       Tilt        ...
  • Page 17 The Gap of the panel and bezel must be  symmetrical. the difference <= 0.5mm   A    A    A ...
  • Page 18 The compages accords to bezel template  A   as a benchmark.  A   The compages accords to bezel template as a benchmark.  A   After compages the rear cover is under the bezel.  A ...
  • Page 19 The height of the key-press and bezel   A must be evenly  when assembled the key-press.  R   B        Cable can't Insert no   bottom...
  • Page 20   Cable can't   Insert no bottom   Cable can't   Insert no bottom   Cable can't   Insert no bottom   Cable can't   Insert no bottom...
  • Page 21                ...
  • Page 22       A  Do not see the internal bracket   A  Below the template<...
  • Page 23   A    A  Backward force M 1  Forward force N 1  T  ( 6 SEC...
  • Page 24   itch  eanback...

  • Page 25: Software/Firmware Upgrade Process

    Software/Firmware Upgrade Process Step 1: Ready for F/W Upgrade 1.1 Change the software file name to ” upgrade.pkg” ,eg: Before change: After change: 1.2 Prepare a USB memory (The file system of USB memory must be FAT16 or FAT 32). 1.3 Copy the file (upgrade.pkg) from your computer to the U-disk root path, and remove it from computer’s USB port! Note: 1).
  • Page 26 2.4. When the monitor screen becomes lights, the upgrade is completed. Unplug the U-disk from TV monitor and press “power” on remote control or right side power button of TV monitor to restart it as figure2.4. Figure2.4 Step 3: Check the F/W version and reset to default. 3.1 Unplug the U-disk.
  • Page 27 Figure 3.2 3.2 If the FW version is correct, then do factory reset in user menu as figure3.6, else skip to step2 to redo upgrade. Method 2: Step1. AC on and turn on TV by remote control or right side “power” button of TV monitor as figure2.1.1. Figure2.1.1 Step2.
  • Page 28 Figure2.2.1 2.1 Select “YES” and press “ok” to automatic upgrade as figure2.2.2. Fig2.2.2 2.2 After the progress is 100%, unplug U-disk from TV and enter factory model to check whether the FW version is correct and do factory in user menu. As to the other details, please refer to the method 1.

  • Page 29: Adjustment / Alignment Procedure

    Adjustment / Alignment Procedure The Control Panel Name Remote Control Description MENU button Enters or exits the OSD menu. • +: Volume up / Navigates to the right VOL (Volume) (OSD) +/- button • -: Volume down / Navigates to the left (OSD) •...
  • Page 30 Adjusting aspect ratio The TV can resize and reshape an image to suit your requirements. The visual result depends upon the setting your have chosen, and the original aspect ratio of the input image. Press Zoom on the remote control to cycle through different aspect ratios.
  • Page 31 Zoom 1 Zoom 2 Panorama Full Screen Video source (HD) 4:3 Video source (HD) 16:9 Video source (SD) 4:3 Video source (SD) 16:9 Computer source 4:3 Computer Source 16:9 • “X” means that the related aspect ratio is not available. •...
  • Page 32 Navigating the OSD menu To enter the On-Screen Display (OSD) menu, press MENU on the remote control or MENU on the TV. Next, follow the navigation guides shown on the screen bottom. For example, you can: 1. Press ▲ or ▼on the remote control or CH ▲/▼on the TV to move among 4 different main menus: Picture, Sound, Channels, and Setup.
  • Page 33 Tint Adjusts color balance. Adjusts image sharpness level. Sharpness When viewing text-rich contents from the VGA or DVI input, you may need to set the sharpness level to 0 for a suitable display result. Adjusts the color temperature of the black and white part of the image. You can choose Colour Temperature from Normal, Cool, Warm, or User.
  • Page 34 Turns on/off the SRS TruSurround HD sound effect, which creates an immersive, SRS Surround feature-rich surround sound experience from two speakers, complete with rich bass, high frequency detail and clear dialog. TV Speaker Turns on/off the built-in speakers. Digital Audio Out Toggles among Dolby Digital, PCM, and Off.
  • Page 35 • Channel Edit: Customizes the number and name of a channel. • Decoder: Decides what channels to use if these channels are from a set-top box connected to the TV via SCART. • Analog CH Fine Tune: Manually adjusts the frequency used by a channel. •...
  • Page 36 • On: sets to the Shop mode. Shop • Off: sets to the Home mode (less power consumption). E-sticker Displays BenQ TV features. When the Shop mode is on, turning on the Demo mode displays a second screen Demo showing color enhancement effects.
  • Page 37 Copy Settings To TV Press Factory Mode (Menu + 1999) Brand BENQ Main-MCU Ver V0.01 V0.11 Loader Ver V0.029A Date Dec 31 2010 Model name E24-5500 Scaler MT5363H Tuner type LG_TDTW_S8… Panel type PANEL_AUO… Current source Auto color ADC R Gain...
  • Page 38 ADC G Gain ADC B Gain ADC R Offset ADC G Offset ADC B Offset Color temp Cool Scaler R Gain Scaler G Gain Scaler B Gain Scaler R Offset Scaler G Offset Scaler B Offset Burn in EEPROM Init. Press Back LIT time 131Hr...
  • Page 39 Supported HDMI video timing Horizontal Freq. Vertical Freq. Pixel Freq. Timing Resolution Note (kHz) (Hz) (MHz) 480i 720 x 480 (1440 x 480) 15.735 HDMI & DVI 576i 720 x 576 (1440 x 576) 15.625 HDMI & DVI 480p 720 x 480 31.47 HDMI &...

  • Page 40: Level 2 Circuit Board And Standard Parts Replacement

    Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to http://cs.tpv.com.cn/hello1.asp for the latest information. Item Description Unit DECO L24WTV-TBENQ4 LOGO BENQ BEZEL L24WTV-TBENQ4 SPEAKER PANEL IR BOARD KEY BOARD...
  • Page 41 HINGE DECO L26WTV-TBENQ4 STAND L26WTV-TBENQ4 BASE L26WTV-TBENQ4 PLATE_BASE FOOT PAD SHEET SCREW Item Part No. Description Unit 0Q1G1040 6120 SPEAKER & BEZEL 0D1G1030 8120 IR BOARD & BEZEL 0D1G1030 8120 MAIN BOARD & MAINFRAME 0M1G1740 6120 POWER BOARD & MAINFRAME 0M1G1740 10225 CR3 HINGE &...

  • Page 42: Six Angles' View

    Six Angles’ View...

  • Page 43: Product Disassembly

    Product Disassembly 1) Remove the base Place the monitor face down on a smooth surface. Be careful to avoid scratch and injury during the process of uninstall. And then remove the base. Remove the stand Remove the hinge cover and the screws in red to remove the stand. Pls use a little force when remove the hinge cover by hand.
  • Page 44 3) Remove the rear cover Remove the rear cover as follow: Note: The BEZEL CLIP is easy to break.
  • Page 45 4) Remove the key board, IR board and speakers from the bezel; remove the main frame from the panel. Note: The KEY CLIP is easy to break. 5) Remove the boards from the main frame.
  • Page 46 6) The panel 7) The Bezel.

  • Page 47: Assembly Sop

    Assembly SOP 1) Stick the non-woven fabric on the mainframe. 2) Assemble the main board, power board and FFC wire.
  • Page 48 3) Stick the non-woven fabric and Mylar on the panel. Note: Non-woven Fabric needs to stick from the front of panel metallic edging which couldn’t be exceeded; And Non-woven Fabric need to be smoothed up and stuck in prison. Non-Woven Fabric 4) Assemble the bezel and the panel.
  • Page 49 5) Assemble the mainframe on the panel. Insert the pin and tidy the wire. 6) Assemble the rear cover. Stick the non-woven fabric on the rear cover. Lock the rear cover.
  • Page 50 7) Assemble the hinge. 8) Assemble the base. 9) Assemble the hinge-cover.

  • Page 51: Block Diagram

    Block Diagram Main Board...
  • Page 52 Power Board AC input Bridge Rectifier Transformer EMI filter Rectifier diodes and Filter Start Resistor (R905,R908,R909) Feedback PWM Control Circuit Power Switch (IC901) (Q901) Photo coupler   (IC902)   Converter Board L801 D801 (CN804) PWM Control MP3389EF ON/OFF (U801)

  • Page 53: Schematic Diagram

    Schematic Diagram Main Board 715G3988M0D001005K +16V 0.6A 3,8,11,13 PWR_5V_1 PWR_5V_1 3,4,6,9,11,12,13,14 +5V_SW DV33SB SOT223 3,4,5,6,8,9,10,12,13,14 DV33 DV11 U751 8,12,13,15 DV33SB IC G903T63UF 0.6A/3.3V SOT-223 VOUT PWR_5V_1 3,13 PWR_16V_1 PWR_5V confirm function_Jason R713 C765 C767 10U 16V 10U 16V CN701 R725 INVERTER_ON_OFF R710 BRIGHT_ADJ...
  • Page 54 +5V_SW 2,8,11,13 PWR_5V_1 +5V_TUNER FB706 U702 2,4,6,9,11,12,13,14 +5V_SW DV18_DDR D702 D703 220R/2000mA G1084T43Uf 4,5,6,8,9,10,12,13,14 DV33 6,12,14 AV33 U750 VOUT 2,8,12,13,15 DV33SB G1117-33T43UF 4,5,6,7,12,14 AV12 2,13 PWR_16V_1 D704 D705 C714 100uF25V C711 C721 1104 R717 C722 RGP15D RGP15D PANEL_VCC 10U 16V 470uF 16V 120R 1% 1/10W 10U 16V...
  • Page 55 M_AOLRCK 　 2,3,6,9,11,12,13,14 +5V_SW 2,8,12,13,15 DV33SB FB1007 +5V_TUNER 120R/3000mA FB1006 3,5,6,8,9,10,12,13,14 DV33 220R/2000mA +5V_TUNER RF_AGC_TUNER LNA_ON/OFF 3,5,6,7,12,14 AV12 +5V_T1 DV11 C1009 C1003 1N 50V 100N 16V TU101 C1004 C1001 C1000 TUNER 100N 16V 10U 16V 330uF 10V R1024 TU102 GND_Tuner GND_Tuner SMD/0402 NC/100K1/16W...
  • Page 56 FB4000 U401A 120R/3000mA AV12 3,4,6,8,9,10,12,13,14 DV33 AG30 AVDD1V25_PLL AVDD1V25_PLL 3,4,6,7,12,14 AV12 DVSS AVDD12_APLL AH33 DV11 DVSS AVDD12_ADCPLL AG32 DVSS AVDD12_SY SPLL AB15 AF29 C4000 C4001 DVSS AVDD12_TVDPLL 100N 16V 100N 16V DVSS SMD/0402 SMD/0402 DVSS AH29 DVSS AVSS12_PLL AC14 AH31 DVSS AVSS12_PLL DVSS...
  • Page 57 U401F 2,3,4,9,11,12,13,14 +5V_SW AVDD3V3_REFP_AADC AA36 VGA_L_In 3,4,5,8,9,10,12,13,14 DV33 AVDD33_REF_AADC AIN6_L_AADC AVDD3V3_ADAC0 AF33 Y 37 VGA_R_In AV33 R4056 AV33 3,12,14 AV33 AVDD33_ADAC0 AIN6_R_AADC AVDD3V3_ADAC1 0R05 1/10W 3,4,5,7,12,14 AV12 AVDD33_ADAC1 AVDD3V3_AADC Y 31 AVDD3V3_AADC AVDD3V3_ADAC0 AVDD33_AADC AA34 FB4057 AIN5_L_AADC Y 29 Y 35 C4052 120R/500mA C4056...
  • Page 58 DV18_DDR 3,4,5,6,12,14 AV12 DV11 U402 RP4100 U403 RP4104 RDQ0 1_A0 1_A8 RDQ16 2_A0 2_CAS# RCAS# U401B RDQ1 1_A1 1_A13 RA13 RDQ17 2_A1 2_A0 RDQ2 1_A2 1_A0 RDQ18 2_A2 2_A13 RA13 DV18_DDR RDQM0 RDQ3 1_A3 1_CAS# RCAS# RDQ19 2_A3 2_A8 VCC2IO RDQM0 RDQS0 RDQ4...
  • Page 59 DV33SB DV33SB R4313 2,3,11,13 PWR_5V_1 0R05 OHM 2,12,13,15 DV33SB RST_N 3,4,5,6,9,10,12,13,14 DV33 U401C R4173 R4171 DV33SB NC/3.9K1/16W NC/3.9K1/16W AVDD3V3_REG AN24 AL22 ORESET# AVDD33_VGA_STB ORESET# 3V3_EX_MCU AL24 AL20 OPWRSB R4194 10K+-5%1/16W R4175 AVSS33_VGA_STB OPWRSB 100R 1/10W 1% 1V0SB AM23 AJ34 OXTALO KEY _UP_DN_DCSW GPO_1 AVDD10_LDO...
  • Page 60 U401H SYSTEM_REST CI_PWR_EN 2,3,4,6,11,12,13,14 +5V_SW OPWM0 GPIO0 M_OPWM1 CI_OCP 2,8,12,13,15 DV33SB OPWM1 GPIO1 BL_DIMMING RF_AGC_TUNER 3,4,5,6,8,10,12,13,14 DV33 OPWM2 GPIO2 M_CI_INDATA1 GPIO3 CI_A14 GPIO4 +5V_SW M_CI_INDATA2 GPIO5 CI_WE# GPIO6 M_CI_INDATA3 GPIO7 CI_IREQ# GPIO8 M_CI_INDATA4 GPIO9 CI_D5 M_CI_INVALID C4201 FB4200 220R/2000mA ETMDC GPIO10 M_CI_OUTDATA5 M_CI_INDATA5...
  • Page 61 3,4,5,6,8,9,12,13,14 DV33 C1065 R1073 47N16V R1072 100OHM1/16W SCT1_AV_IN 0R05 OHM CVBS3P SCT1_AUR_OUT SCT1_AUR_IN C1064 SCT1_AUL_OUT 47pF 50V ZD1065 R1061 VPORT0603100KV05 75R 1/16W 1% SCT1_AUL_IN SCT1_B_IN SCT1_FS_IN SCART1_L_In SCART1_R_In SCT1_G_IN FB1052 C1068 80 OHM R1135 10N 50V SCT1_R_IN R1071 68 OHM +-5% 1/16W L1050 R1100 SCT1_FB_IN...
  • Page 62 2,3,4,6,9,12,13,14 +5V_SW CVBS1P SOY 1 CN111 Y 1P Y _IN_1 C1153 2,3,8,13 PWR_5V_1 PB1P R1156 1.5nF 50V COM1 0R05 OHM PR1P FB1158 SOY 1 PB_IN_1 80 OHM R1168 18OHM1/16W C1164 Y_IN_1 Y 1P 10U 16V R1150 R1158 YPbPrR_IN 30Kohm 1/16W +/-5% Y PbPr_R_In M_SPDIF_Out PR_IN_1...
  • Page 63 2,3,4,6,9,11,13,14 +5V_SW 3,4,5,6,8,9,10,13,14 DV33 2,8,13,15 DV33SB 3,6,14 AV33 HPLUGP2_5V +5V_SW U511 3,4,5,6,7,14 AV12 CN501 RX2_2+ RX2_2+ D506 HDMI RX2_2- RX2_2- BAT54C RX2_2+ RX2_1+ RX2_1+ RX2_1- RX2_1- D2 Shield CH4 NC RX2_2- HPLUGP2_ESD RX2_1+ FB501 NC/AOZ8804DI 120R/6000mA D1 Shield RX2_1- 5,8,11 M_OPCTRL3 RX2_0+ D0 Shield...
  • Page 64 DV33 2,3,4,6,9,11,12,14 +5V_SW +16V 3,4,5,6,8,9,10,12,14 DV33 2,8,12,15 DV33SB C614 PWR_16V_1 C4219 1N 50V 2,3,8,11 PWR_5V_1 DV33SB DV33 Shutdown 100N 16V AUDIO_VDD U601 R638 100K1/16W R613 R620 GND_SOUND Thermal Pad NC/10K1/16W 10K+-5%1/16W R622 R666 C633 Line_Out_R AMP_MUTE 0R05 OHM 10K+-5%1/16W Q601 Shutdown GND_SOUND C613...
  • Page 65 PANEL_VCC 2,3,4,6,9,11,12,13 +5V_SW 2,8,12,13,15 DV33SB 3,4,5,6,8,9,10,12,13 DV33 3,6,12 AV33 3,4,5,6,7,12 AV12 DV11 TP402 TP412 CN409 TP403 TP413 TP404 TP414 CN408 TP405 TP415 OCKN# OCKP# BL_ON/OFF TP406 TP416 BL_DIMMING BRIGHT_ADJ INVERTER_ON_OFF OCKN# TP407 TP417 OCKP# TP408 TP418 ECKN# TP409 TP419 ECKP# ECKN# ECKP# PANEL_VCC...
  • Page 66 PWR_5V PWR_5V FB4207 NC/120R/3000mA 2,8,12,13 DV33SB 3V3_EX_MCU PWR_5V_MCU U4055 3V3_EX_MCU RST_N R4321 VOUT MCU_5V_POWER_ON 71G 59A121 TA NC/0R05OHM1/16W Q1159 HDMI_CEC C4220 C4222 C4221 C4223 GPO_1 6,11 VSY NC 6,11 HSYNC VGASCL R4322 0R05 OHM VGASDA LED_R LED_G Touch_IRQ GPO_1 R4323 Touch_IRQ_1 3V3_EX_MCU 3V3_EX_MCU...
  • Page 67 Power Board Adapter 715G3973P0BW320030 FB902 R9 25 C932 100 O HM 1/4W 100 O HM 1/4W NR903 C901 C924 R9 01 BD901 GBL408 BEAD SCK101R55LGY 0.001uF/250V R9 22 2N2 500V 2N2 500V FB901 100 O HM 1/4W Coil T901 L903 POWER X'FMR R9 02 100 O HM 1/4W...
  • Page 68 Converter 715G3977P02000004L +16V CN801 D801 B3100B 3A 100V SMB L801 R813 0R05 4A 1/4W 22uH ON/OFF U801 C803 Q806 C809 Q801 0.47UF 50V P8008HV 100UF 35V NC(AOD4126) MP3389EF CONN C807 VFAULT 4.7UF 100V R805 Gate R801 GATE 300KOHM 1/10W 10 OHM 1% 1/4W C804 COMP PGND...
  • Page 69 Key Board 715G4516K01000004S +3.3V ADC 57(51~60) 44(38~47) 29(24~33) 15(10~20) R001 R002 0.67V 2.53V 1.93V 1.27V 47K 1% 47K 1% ZD001 C001 R003 R004 R005 R006 CN001 NC/UDZSNP5.6B 100N 50V 160KOHM 1/10W 68K 1/10W 30K 1/10W 1% 12K 1/10W 1% KEY1 KEY2 +3.3V SW001...
  • Page 70 IR Board 715G4517R01000004S 5V_S0 5V_S0 R201 R202 IR201 10K 1/16W 5% 100R 1/16W 5% CN201 R203 IR_OUT 5V_S0 VOUT 0R05 OHM KSM-603TM2M C202 C203 750R 1/10W 5% C201 R204 R205 10uF 16V 2K2 1/10W 5% CONN NC/100N 50V R208 R209 2.2K 1/10W 2.2K 1/10W R206...

  • Page 71: Troubleshooting

    Troubleshooting Frequently asked questions (FAQ) The image is blurred: Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and then select the correct resolution, refresh rate and make adjustments based on these instructions. How do you use a VGA extension cable? Remove the extension cable for the test.
  • Page 72 “NO” in the “OSD Lock” submenu from the “OSD Settings” menu (under SYSTEM), and all OSD controls will be accessible. If your problems remain after checking this manual, please contact your place of purchase or e-mail us at: Support@BenQ.com...

  • Page 73: No Power

    No Power No power Check power cable is Re-plug the power cable tightened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power indicates is OK? Replace the converter board Replace main board and check connections Replace key board and check connections...
  • Page 74 No Video No Video Press the power Replace the main board button is OK? Replace the converter The end board Replace the main The end board and connection Replace the LVDS/FFC Check the LVDS/FFC cable or panel cable or panel Replace the key board...
  • Page 75 DIM (image overlap, focus or flicker) Reset in factory mode The end Set to the optimal The end frequency, select the recommended frequency Readjust the phase and pixel The end clock in the user mode Pull out signal cable and Check the signal cable check “Self Test Feature and the PC...
  • Page 76 Color is not optimal Color is not optimal Color shift Miss color Reset the factory mode Replace the signal cable In the user mode, set the” color settings” until customer satisfy The end Pull out the signal cable and check the screen color display is normal? Replace the signal cable or PC Replace the main board...

  • Page 77: Pcb Layout

    PCB LAYOUT Main Board 715G3988M0D001005K...
  • Page 81 Power Board Adapter 715G3973P0BW320030...
  • Page 84 Converter 715G3977P02000004L...
  • Page 85 Key Board 715G4516K01000004S...
  • Page 86 IR Board 715G4517R01000004S...

  • Page 87: Appendix 1 - Screw List / Torque

    Appendix 1 – Screw List / Torque Part No. Type Description Quantity Torque 0Q1G1040 6120 Q4*6 SPEAKER & BEZEL 9 ± 1kgf.cm 0D1G1030 8120 M3*8 IR BOARD & BEZEL 4 ± 1kgf.cm 0D1G1030 8120 M3*8 MAIN BOARD & MAINFRAME 6 ± 1kgf.cm 0M1G1740 6120 M4*6 POWER BOARD &...

  • Page 88: Appendix 2 -Code List: Ir

    Appendix 2 –CODE LIST: IR INPUT • Selects an input source. • Enters a sub menu. Power Number / Alphabet • EPG: Enters or exits the Electronic Program Guide. • PRE CH: Returns to the previously selected channel. Switches to the television mode. YPbPr Switches to the YPbPr (Component Video) mode.
  • Page 89 MENU Enters/exits the on-screen display (OSD) menu. EXIT Returns to the upper level of the On-Screen Display (OSD) menu. Options (depicted by 4 colors) Provides controls when Teletext or USB device is in use. TELETEXT Displays or hides Teletext. SUBTITLE Turns on/off subtitles.
  • Page 90 Button key Function Code Button key Function Code SOURCE 08F7 PICTURE 03FC POWER 01FE SLEEP 13EC 15EA < 49B6 16E9 0BF4 17E8 0DF2 19E6 0FF0 1AE5 > 4AB5 1B 4 MENU 0AF5 1DE2 EXIT 07F8 1EE1 4CB3 1FE0 4DB2 58A7 4EB1 41BE 4FB0...

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