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Lenovo L2060wA Service Manual

20.0” lcd color monitor
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20.0" LCD Color Monitor
Service
Service
Service
Table Of Contents......................................................1
Revision List...................................................................2
Important Safety Notice............................................3
1.Monitor Specification...............................................4
2.LCD Monitor Description........................................5
3.Operation Instruction...............................................6
3.1.General Instructions.................................................6
3.2.Control Button......................................................6
3.3.Adjusting the Picture..........................................7
4.Input/Output Specification.......................................10
4.1.Input Signal Connector.........................................10
4.2.Factory Preset Display Modes.........................11
N
4.3.Panel Specification...............................................12
5.Block Diagram........................................................17
5.1.Software Flow Chart.........................................17
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...................................19
6.Schematic...........................................................21
6.1.Main Board.................................................21
6.2.Power Board.....................................................26
6.3.Key Board.......................................................28
7.PCB Layout...........................................................29
7.1.Main Board.........................................................29
7.2.Power Board.........................................................32
7.3.Key Board..........................................................35
8.Maintainability........................................................36
8.1.Equipments and Tools Requirement......................36
8.2.Trouble Shooting............................................37
10.Monitor Exploded View......................................45
11.BOM List................................................................46
SAFETY NOTICE
1
Lenovo L2060wA
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  Summary of Contents for Lenovo L2060wA

  • Page 1: Table Of Contents

    20.0” LCD Color Monitor Lenovo L2060wA Service Service Service Table Of Contents Description Page Description Page 5.2.Electrical Block Diagram……..……………..…..19 Table Of Contents..……......…..1 Revision List.…...........……..2 6.Schematic…………………........…21 6.1.Main Board..........21 Important Safety Notice.……......……..3 1.Monitor Specification......………..4 6.2.Power Board..……….…........26 6.3.Key Board..……….…........28 2.LCD Monitor Description……………………………..5 3.Operation Instruction……………....……...6 7.PCB Layout..………………........29...
  • Page 2: Revision List

    20.0” LCD Color Monitor Lenovo L2060wA Revision List Version Release Date Revision History TPV Model Name TARSRJNY3WG1HNJ Aug.15.2009 Initial release TARGRJNY3WG1HNJ TARMRJNY3WG1HNJ TARSRJNY3WG2HNJ Sep.03.2009 Add new model TARGRJNY3WG2HNJ TARSRJNM3WG2HNJ TARGRJNK3WG2HNJ TARMRJNM3WG2HNJ TARSRJNY3WG2DNJ Sep.11.2009 Add new model TARSRJNC3WG2DNJ TARGRJNM3WG2HNJ TARSRJNC3WG2DNJ TARGRJNM3WG2HNJ...
  • Page 3: Important Safety Notice

    20.0” LCD Color Monitor Lenovo L2060wA 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 Specification

    20.0” LCD Color Monitor Lenovo L2060wA 1. Monitor Specifications Driving system TFT Color LCD LCD Panel Active Display Area 442.8 (W)×249.075(H)mm Pixel Pitch 0.2768 mm×0.2768mm R,G,B Analog Interface,75ohm,0.7V Video DVI Digital Interface Input Separate Sync. H/V TTL H-Frequency 46kHz –70kHz...
  • Page 5: Lcd Monitor Description

    20.0” LCD Color Monitor Lenovo L2060wA 2. LCD Monitor Description The LCD MONITOR will contain a main board, a power board and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC/DC to AC Inverter voltage to drive the backlight of panel and the main board chips each DC voltage.
  • Page 6: Operation Instruction

    20.0” LCD Color Monitor Lenovo L2060wA 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The control buttons are located on the right side of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.
  • Page 7: Adjusting The Picture

    20.0” LCD Color Monitor Lenovo L2060wA 3.3 Adjusting the Picture To use the controls: 1. Press in the bottom right of monitor to power on,and then the blue indicator become bright. to open the main OSD menu. Press to move among the icons.Select an icon and press to access that function.
  • Page 8 20.0” LCD Color Monitor Lenovo L2060wA Adjusts intensity of red, green and blue. Preset mode Default Image Properties Reddish Bluish Custom Red: Increases or decreases the Color saturation of ‘red’ in the image. Green: Increases or decreases the saturation of ‘green’ in the image.
  • Page 9 20.0” LCD Color Monitor Lenovo L2060wA the OSD will remain active after the last time a button is pressed. Exit Save user adjustment and OSD disappear. Exit OSD Value on Factory Mode Brightness Contrast ratio color temperature Text mode 7200k...
  • Page 10: Input/Output Specification

    20.0” LCD Color Monitor Lenovo L2060wA 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description +5VDC Red Input Green Input Blue Input H Sync Connection detect V Sync Red GND Green GND Blue GND Pin No.
  • Page 11: Factory Preset Display Modes

    20.0” LCD Color Monitor Lenovo L2060wA 4.2. Factory Preset Display Modes...
  • Page 12: Panel Specification

    4.3 Panel Specification L2060wA had adopted in priority LTM200K by Samsung Electronics and LG display. This model is composed of a TFT LCD panel,a drivr circuit and a back light unit.The resolution of a 20.0” is 1600×900 and this model can display up 16.7millions colors.
  • Page 13 20.0” LCD Color Monitor Lenovo L2060wA 4.3.4 Optical Characteristics (Conditions: Ta= 25°C,Vlcd=5.0V,fv=60Hz,Dclk=69.25MHz, IBL=7.5mA):...
  • Page 14 20.0” LCD Color Monitor Lenovo L2060wA 4.3.5 Electrical Characteristics a ) TFT LCD Module b)The back light unit is an edge-lighting type with 2 CCFTs (Cold Cathode Fluorscent Tube).The characteristics of two lamps are shown in the following tables...
  • Page 15 20.0” LCD Color Monitor Lenovo L2060wA...
  • Page 16 20.0” LCD Color Monitor Lenovo L2060wA 4.3.6 Interface Connections -LCD Connector(CN1). :FI-XB30SL-HF11(JAE), MDF76LBRW-30S-1H (Hirose) or Equivalent - Mating Connector : FI-XC30C2L (Manufactured by JAE) or Equivalent MODULE CONNECTOR(CN1)PIN CONFIGURATION Note: 1. All GND(ground) pins should be connected together and to Vss which should also be connected to the LCD’s metal frame.
  • Page 17: Block Diagram

    20.0” LCD Color Monitor Lenovo L2060wA 5. Block Diagram 5.1 Software Flow Chat...
  • Page 18 20.0” LCD Color Monitor Lenovo L2060wA 1) MCU initialize. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.
  • Page 19: Electrical Block Diagram

    20.0” LCD Color Monitor Lenovo L2060wA 5.2 Electrical Block Diagram 5.2.1 Main Board Main Board Block Diagram Crystal24MHz LCD PANEL (X401) (CN601/CN602) EPR_SDA EPR_SCL FLASH ROM Scalar IC RTD2122 RTD2545 M24C16 (Include ADC, OSD, MCU) Signal access (U403) (U401) U501...
  • Page 20 20.0” LCD Color Monitor Lenovo L2060wA 5.2.2 Power/ Inverter Board Fuse Smoothing Rectifier Transformer Rectifier Capacitor AC input 100-240V Rectifier IC-PWM Switching Rectifier Audio in Sense resistor Amplifier regulating Photo Couple Sampling To speaker DC-AC Resonance NET High Voltage 12V DC...
  • Page 21: Schematic

    20.0” LCD Color Monitor Lenovo L2060wA 6. Schematic 6.1 Main Board 715G3327- 1 CN201 CMVCC CMVCC MVCC FB202 CMVCC BKLT-VBRI DIM# BKLT-EN NC/120OHM C_PANEL_INDEX CMVCC PANEL_ID# Volume# FB201 VCC3 Volume# U201 Mute Mute VOUT 120Ω CONN C202 C204 AP1117E33LA C205 C203 0.1uF/16V...
  • Page 22 20.0” LCD Color Monitor Lenovo L2060wA DSUB_V H_Sy nc R301 100R 1/16W RTD_H V_Sy nc R303 100R 1/16W RTD_V R304 R305 C302 C303 2K2 1/16W FB302 C304 2K2 1/16W 33pF 33pF R306 100R 1/16W VGA_B+ RTD_B+ RTD_B+ 19R BEAD CN301...
  • Page 23 20.0” LCD Color Monitor Lenovo L2060wA '06-11-24 D402 change Value from BAT54 to BAV70 150 OHM DVI_5V 2007-02-06 add for EMI DSUB_5V FB401 CMVCC D402 BAV70 D401 D401 is Reserve for powerBoard CMVCC=3V CMVCC MCU_VCC_S MCU_VCC D403 MCU_VCC_S '06-11-24 Q401...
  • Page 24 20.0” LCD Color Monitor Lenovo L2060wA 1.8AVCC R1.8DVCC 150 OHM '07-02-15 add for EMI FB501 Q501 VCC3 KN2907AS R1.8DVCC1 Q502 C507 R507 3.3Ω 2W FB503 C506 C501 KN2907AS 120Ω C505 1uF/10V 0.1uF/16V 1uF/10V C502 22UF50V 0.1uF/16V '07-02-15 add for EMI...
  • Page 25 20.0” LCD Color Monitor Lenovo L2060wA LVDS Panel ( FFC Type ) LVDS_O[0..9] CN601 CN602 LVDS_O0 RXO0- LVDS_O1 RXO0+ RXO0- LVDS_O2 RXO1- LVDS_O0 RXO0- LVDS_O1 RXO0+ RXO0+ LVDS_O3 RXO1+ LVDS_O2 RXO1- LVDS_O3 RXO1+ RXO1- LVDS_O4 RXO2- LVDS_O4 RXO2- LVDS_O5 RXO2+...
  • Page 26: Power Board

    20.0” LCD Color Monitor Lenovo L2060wA 6.2 Power Board 715G3483- 2 14.5Vi R929 100 OHM 1/4W 1000PF500V BD901 F801 C933 L908 0R05 1/4W 5% +14.5V R930 100 OHM 1/4W 1.1uH R903 100 OHM 1/4W ZD901 R904 470OHM2W C925 C918 FB904...
  • Page 27 20.0” LCD Color Monitor Lenovo L2060wA CN801 D805 R817 CONN T801 1K 1/8W 1% R821 BAW56 10K 1/10W 1% POWER X'FMR C803 1N 100V NPO +/-5% C804 C819 +14.5V 22pF/3KV 0.01uF C801 R801 22pF/3KV R806 C802 C824 1K5 1/10W 1%...
  • Page 28: Key Board

    20.0” LCD Color Monitor Lenovo L2060wA 6.3 Key Board 715G3290-1 LED_RED# LED_GRN# 下板元件尽量layout在一个区域 ZD007 ZD008 CN001 UDZSNP5.6B UDZSNP5.6B LBADC1 R002 LBADC2 2K OHM 1% 1/10W DC_POWERON LED_GRN# LED_RED# R004 1K 1/10W 1% CONN C003 C004 R005 2K OHM 1% 1/10W...
  • Page 29: Pcb Layout

    20.0” LCD Color Monitor Lenovo L2060wA 7. PCB Layout 7.1 Main Board 715G3327- 1...
  • Page 30 20.0” LCD Color Monitor Lenovo L2060wA...
  • Page 31 20.0” LCD Color Monitor Lenovo L2060wA...
  • Page 32: Power Board

    20.0” LCD Color Monitor Lenovo L2060wA 7.2 Power Board 715G3483- 2...
  • Page 33 20.0” LCD Color Monitor Lenovo L2060wA...
  • Page 34 20.0” LCD Color Monitor Lenovo L2060wA...
  • Page 35: Key Board

    20.0” LCD Color Monitor Lenovo L2060wA 7.3 Key Board 715G3290-2...
  • Page 36: Maintainability

    20.0” LCD Color Monitor Lenovo L2060wA 8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual.
  • Page 37: Trouble Shooting

    20.0” LCD Color Monitor Lenovo L2060wA 8.2 Trouble Shooting 8.2.1 Main Board (1) No power No power Press power key and look if the picture is normal Please reinsert and make sure the 5V input is normal Reinsert or check CN201 and power section Measure U201 Pin2=3.3V /Q401-3.3V...
  • Page 38 20.0” LCD Color Monitor Lenovo L2060wA (2) No picture No picture The button if under X401 oscillate Replace X401 control waveform is normal Check Correspondent Check reset circuit of component U401 is normal Measure Q401 pin(e)=3.3V and Q502 pin(c)=1.8V Replace U202...
  • Page 39 20.0” LCD Color Monitor Lenovo L2060wA (3) White screen White screen Measure Q601 base X401 oscillate waveform is normal is low level? ReplaceX401 Check Q601,Q602 is Check reset circuit of broken or CN601 solder? U202 is normal Check Correspondent Check Correspondent component.
  • Page 40 20.0” LCD Color Monitor Lenovo L2060wA 8.2.2 Power/Inverter Board No power Check CN902 pin4, 5 = 5V 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 41 20.0” LCD Color Monitor Lenovo L2060wA W / LED, No Backlight Check CN902 pin4, 5 = 5V Check the adapter and F904 Check ON/OFF signal and the pin 12 of IC801 is 12V Check main board or change ON/OFF signal...
  • Page 42 20.0” LCD Color Monitor Lenovo L2060wA 8.2.3 Key Board OSD is unstable or not working Connect Key Board Is Key Board connecting normally? Replace Button Switch Is Button Switch normally? Replace Key Board Is Key Board normally? Check Main Board...
  • Page 43: White-Balance Luminance Adjustment

    = 313 ±20, y = 329 ±20, Y= 180±20cd/m 3. Into Factory mode of Lenovo L2060wA: Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.
  • Page 44 20.0” LCD Color Monitor Lenovo L2060wA C. Adjust Bluish (9300K) color-temperature 1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 283 ±20, y = 297 ±20, Y=180±20cd/m 4.
  • Page 45: Monitor Exploded View

    20.0" LCD Color Monitor Lenovo L2060wA 10. Monitor Exploded View...
  • Page 46: Bom List

    20.0"LCD Color Monitor Lenovo L2060wA 11. BOM List TARSRJNY3WG1HNJ Location Part number Description Remark 040G 45760819A DATE/MODEL LABEL 040G 45760849B CERTIFICATION LABEL 040G 58160811A GREEN DOT LABEL 052G 1185 55 LENOVO MIDDLE TAPE 052G 1186 SMALL TAPE 052G 1211 A CONDUCTIVE TAPE 55MM *45MM *0.08MM...
  • Page 47 20.0"LCD Color Monitor Lenovo L2060wA C203 067G 4051014PB EC 100UF M 25V 6.3*11MM C505 067G 4052207PB EC 22UF M 50V 5*11MM U402 056G 158501 IC AS431AN-E1 SOT23 U501 056G 562201 IC RTD2545LH-GR QFN-48 U201 056G 585 4A IC AP1117E33L-13 U107...
  • Page 48 20.0"LCD Color Monitor Lenovo L2060wA R311 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R312 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R313 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R315 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R402 061G0402102 RST CHIPR 1 KOHM +-5% 1/16W...
  • Page 49 20.0"LCD Color Monitor Lenovo L2060wA R314 061G0402750 RST CHIPR 75 OHM +-5% 1/16W R310 061G0402750 RST CHIPR 75 OHM +-5% 1/16W R307 061G0402750 RST CHIPR 75 OHM +-5% 1/16W R602 061G0805331 RST CHIPR 330 OHM +-5% 1/8W R606 061G0805391 RST CHIPR 390 OHM 5% 1/8W...
  • Page 50 20.0"LCD Color Monitor Lenovo L2060wA FB501 071G1608151 5Y HIP BEAD 1608 150 OHM±25% FB401 071G1608151 5Y HIP BEAD 1608 150 OHM±25% FB304 071G1608151 5Y HIP BEAD 1608 150 OHM±25% D109 093G 60505 DIO SIG SM BAT54C(PHSE)R D402 093G 64 42 PP...
  • Page 51 20.0"LCD Color Monitor Lenovo L2060wA J45G 77 6 PE PACKING J45G 88901LX2 PP BAG J50G 600 5 HANDLE 1 J50G 600 6 HANDLE 2 J52G6020149 PROTECT FILM J52G6025 13152 MYLAR J70G2002608 1C CD MANUAL L2060 LC KEPC8QE6J G3290-2-X-X-1-090727 077G 500 6Z XL...
  • Page 52 20.0"LCD Color Monitor Lenovo L2060wA EC 105℃ CAP 1000UF M 25V C920 067G215S1024KV 2nd source EC 105℃ CAP 470UF M 16V C922 067G215S4713KV 2nd source CAP 105℃ 100UF M 450V C907 067G215Z10115P 2nd source C907 067G315Z10115K EC.100UF 450V 18*40MM L901...
  • Page 53 20.0"LCD Color Monitor Lenovo L2060wA Q810 057G 759 2 RK7002FD5T116 SOT-23 BY ROHM 2nd source Q809 057G 759 2 RK7002FD5T116 SOT-23 BY ROHM 2nd source Q808 057G 760 4 DTA144WKA BY ROHM SMT Q805 057G 760 5A DTC 144WN3/S SOT-23...
  • Page 54 20.0"LCD Color Monitor Lenovo L2060wA R804 061G0805101 1ST CHIPR 100 OHM +-5% 1/8W R841 061G0805104 RST CHIPR 100K OHM +-5% 1/8W R919 061G0805151 RST CHIPR 150 OHM +-5% 1/8W R825 061G0805220 RST CHIPR 22 OHM +-5% 1/8W R829 061G0805220 RST CHIPR 22 OHM +-5% 1/8W...
  • Page 55 20.0"LCD Color Monitor Lenovo L2060wA JR905 061G2010000 RST CHIP MAX 0 OHM 3/4W C923 065G0603102 32 1000PF +-10% 50V X7R C915 065G0603103 32 CAP CHIP 0603 0.01UF K 50V X7R C926 065G0603104 12 CER2 0603 X7R 16V 100N P C924...
  • Page 56 20.0"LCD Color Monitor Lenovo L2060wA C933 065G517K102 2T6921 CAP CER 1000PF K 500V Y5P C934 065G517K102 2T6921 CAP CER 1000PF K 500V Y5P C938 067G 4052214PT EC 220UF M 25V 8*12MM C938 067G 4152214KT EC 220UF 25V M 8*12MM 2nd source CAP 105℃...