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Lenovo SPECTRUM Series Service Manual

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SERVICE MANUAL

SPECTRUM Series
LCD Monitor

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Summary of Contents for Lenovo SPECTRUM Series

  • Page 1: Service Manual

    SERVICE MANUAL SPECTRUM Series LCD Monitor...
  • Page 2 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 OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS, MANUFACTURE DATA : May-25.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS PAGE SPECIFICATIONS ....................GENERAL SPECIFICATIONS ...........…....LCD MONITOR DESCRIPTION ..............INTERFACE CONNECTOR ..............……. PRECAUTION AND NOTICES ................ASSEMBLY PRECAUTION ................. OPERATIONG PRECAUTION ..............STORAGE PRECAUTION …................ HIGH VOLTAGE WARNING ............... OPERATING INSTRUCTIONS ................ADJUSTMENT ......................7～8 CIRCUIT & SOFTWARE DESCRIPTION ..............8～13 TROUBLE SHOOTING.....................

  • Page 4: Specifications

    1. SPECIFICATIONS FOR LCD MONITOR General specifications 1. LCD-PANEL : Active display area 15 inches or 15.1 inches diagonal Pixel pitch 0.297 mm x 0.297 mm Pixel format 1024 x 768 RGB vertical stripe arrangement 2. Display Color : 6-bit, 262144 colors or 8-bit, 16.7 million colors 3.

  • Page 5: Lcd Monitor Description

    LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board, an inverter/power board, keypad board and internal adapter 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: Precaution And Notices

    2. PRECAUTIONS AND NOTICES ASSEMBLY PRECAUTION (1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD panel surface by touching with bare hands (Polarizer film, surface of LCD panel is easy to be flawed) In the LCD panel, the gap between two glass plates is kept perfectly even to maintain display characteristic and reliability.

  • Page 7: Operating Instructions

    3. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the LM520 LCD monitor display. 1. Position the display on the desired operation and plug–in the power cord into External Adapter AC outlet. Three-wire power cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical conduct ground.

  • Page 8: Adjustment

    4. ADJUSTMENT 亮 度 和 对 比 度 位 置 调 整 视 频 杂 讯 语 言 选 择 显 示 时 间 色 温 调 整 位 置 退 出 菜 单 恢 复 出 厂 模 式...

  • Page 9: Circuit & Software Description

    5. CIRCUIT-DESCRIPTION 5-1 PANEL SPECIFICATION (LG X08) 5-1-1Panel Feature － 15” XGA TFT LCD Panel － 2 CCFLS Backlight System － Supported (H1024Pixel × V768Lines) resolution － By applying 8 bit digital data 5-1-2 Display Characteristics 5-1-3 Optical Characteristics...
  • Page 10 5-1-4 Parameter guide line for CCFL Inverter INVERTER MAX BRINGTHNESS (Vadj:5.0v), LOAD=120KΩX4 (ROOM TEMPERATURE 25℃ ±4℃) ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK Input voltage 10.8 13.2 Input current 2250 2500 FOR 4 LOAD Output Current Iout FOR 1 LOAD Frequency FOR 1 LOAD 50.0...

  • Page 11: Adjustment

    5-2 SPECIAL FUNCTION with PRESS-KEY press Menu button during 2 seconds along with plug-in the AC Power cord: That operation will set the monitor into “Factory- mode”, in Factory mode we can do the White balance adjustment with RS232 , and view the Backlight counter (this counter is use to record the panel activate hours ,for convenient the maintainer to check the panel backlight life time) In Factory mode, OSD-screen will locate in left top of screen.
  • Page 12 MODULE-TPYE COMPONENT : Inverter/Power Board Inverter Block Diagram...
  • Page 13 SOFTWARE FLOW CHART...
  • Page 14 1) MCU initialize. 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 15: Trouble Shooting

    6. Trouble Shooting 6-1.MAIN BOARD 1.NO SCREEN APPEAR Check CN504 pin 10 = 2.5 V? Check Correspondent component. Check CN504 pin 8 = 3.3 V? Is there any shortage or cold solder? Check CN504 pin 4 = 5 V? Check Power Board. Measured CN402 pin 1/2 = 5V? Yes, all DC level exist Yes .there have OSD show...
  • Page 16 PANEL-POWER CIRCUIT Check the PPWR panel power relative circuit, R223、Q200、Q201(pin2) In normal operation, when LED =green, R223 check R824 should have response from 14V t should =0 v, If PPWR no-response when the power switch When we switch the power switch from on t Turn on and turn off, replace the U501-GMZAN1 OK,R225 have Measured the Q201 pin 2= 3.3 V?
  • Page 17 U4-DATA OUTPUT NG , no Measured ECLK(pin15,16) Replace MST8011B (U4) or transition HSYNC,VSYNC (pin 176,177 from U4 ) replace MAINBOARD. Is there have any transition? Eclk around 28MHz to 40 MHZ , VSYNC =60.09Hz , HSYNC around 30KHz-60 KHz ??(refer to input signal=640x480@60 Hz 31k, and LED is green) If Main Board being replace , please do the EDID programming...
  • Page 18 3.INVERTER Control Relative Circuit Check the Bklt-On relative circuit, R357, R358, Measured the inverter connector In normal operation, when LED =green, CN504 R357 Bklt-On should =5 v, pin1 on/off control=3.3V (on) If Bklt-On no-response when the power switch pin2 PWM signal control dim 0V-5V turn on-off, Replace U203 MST8011B NG, still no screen Replace power board to new-one...
  • Page 19 4.U4-DATA OUTPUT Measured ECLK, VSYNC, HSYNC (pin NG , no transition 177,176 from U4 ) Is the waveform ok? ECLK around 40 MHz , VSYNC =60.09Hz , Replace MST8011B HSYNC around 80 KHz ?(refer to input (U4) or replace Main signal=640x480@60 Hz 31k, and LED is board.
  • Page 20 6-2.Power/Inverter Board 1.) No power...
  • Page 21 2.) W / LED , No Backlight...
  • Page 22 6-3.THE AUDIO WITHOUT SOUND OR NO STANDBY AND MUTE FUNCTION Use PC and measure the speaker Set the volume to maximal, test whether the audio outputs Check whether the audio cable Connect it and END is connected,. Check the output voltage Check whether the input voltage of CN501 in mainboard of Pin6,16,27 (U601) is 5v...
  • Page 23 There is volume output in power saving model Check U601 pin10 and pin12,and Check U601 pin15 and pin28 No signal measure whether signal input or not whether signal output or not With signal with signal input output Measure output signal from Change U601 and CN501 in main board With signal...

  • Page 24: Mechanical Of Cabinet Front Dis-Assembly

    MECHANICAL OF CABINET FRONT DIS-ASSEMBLY SCREW Q1A340-16-128X4 REAR COVER 34A675 SHIELD 85A548 MAIN BOARD MAIN FRAME 15A5683(HANNSTAR) SCREW Q1A1030-12-128X4 INVERTER SHIELD 85A577 LCD PANEL 750ALCDX41-1 INVERTER BOARD 79AL15-6-S SUPPORT(BACK) 34A677 ADAPTER BOARD 80AL15-2-L1 HINGE SUPPORT(FRONT) 37A442 34E676 KEPC KEPC560EKMN SHIELD KEY PAD 85A580 33A4095...
  • Page 25 8.BOM LIST: T562KGXCDLH8N 插入位置 元件料号 品名规格 用量 单位 CBPC562KGXH8 CONVERSION BOARD T562K* 1 PCS CNPC560A2 CONVERSION BOARDT562/4K 1 PCS IDPC5215A2L1 INVERTER DC BOARD FOR T 1 PCS KEPC562KBL KEY BOARD FOR T562K*LEG 1 PCS 1 27 WOODEN PALLET 0.009 PCS 1 28 WOODEN PALLET 0.009 PCS...
  • Page 26 1185 6B LENOVO MIDDLE TAPE 12 CM 1186 SMALL TAPE 8 CM 1211 A ALUMINIUM TAPE 4 PCS 52L6020 2 PROTECT FILM 0 PCS 52L6025 11556 1 PCS 绝缘片 71L 100 23 2 PCS 磁环 85L 593 4 G SHIELD CASE...
  • Page 27 X601 93L 22 55 H 20MHZ 1 PCS PARENT NO:AIC562KGXH8 MAIN BOARD FOR T562K*LGE ------ ------------------------ ----------------------- --------- ---- U401 56L 562 57 MST8011B PQFP-128 1 PCS U202 56L 563 25 AIC1084-33CE T0-252 1 PCS U201 56L 585 5 RT9164-25CG 0 PCS U201 56L 585 5A...
  • Page 28 R202 61L0603103 CHIPR 10K OHM +-5% 1/10 1 PCS R204 61L0603103 CHIPR 10K OHM +-5% 1/10 1 PCS R206 61L0603103 CHIPR 10K OHM +-5% 1/10 1 PCS R208 61L0603103 CHIPR 10K OHM +-5% 1/10 1 PCS R211 61L0603103 CHIPR 10K OHM +-5% 1/10 1 PCS R308 61L0603103...
  • Page 29 C401 65L0603104 32 CHIP 0.1UF 50V X7R 1 PCS C404 65L0603104 32 CHIP 0.1UF 50V X7R 1 PCS C406 65L0603104 32 CHIP 0.1UF 50V X7R 1 PCS C407 65L0603104 32 CHIP 0.1UF 50V X7R 1 PCS C408 65L0603104 32 CHIP 0.1UF 50V X7R 1 PCS C409 65L0603104 32...
  • Page 30 FB402 71L 56Z601 CHIP BEAD 600 OHM 0805 1 PCS FB403 71L 56Z601 CHIP BEAD 600 OHM 0805 1 PCS FB404 71L 56Z601 CHIP BEAD 600 OHM 0805 1 PCS FB405 71L 56Z601 CHIP BEAD 600 OHM 0805 1 PCS FB406 71L 56Z601 CHIP BEAD 600 OHM 0805...
  • Page 31 CON201 33L8020 2D U WAFER 0 PCS CON202 33L8020 2D U WAFER 0 PCS CON201 33L8020 2D AC CONN.2P R/A DIP BY ACES 1 PCS CON202 33L8020 2D AC CONN.2P R/A DIP BY ACES 1 PCS 40L 45762412A CBPC LABEL 1.03 PCS 6 4500 RTV 胶...
  • Page 32 R202 61L0603103 CHIPR 10K OHM +-5% 1/10 1 PCS R206 61L0603123 CHIP 12K OHM 1/10W 1 PCS R211 61L0603123 CHIP 12K OHM 1/10W 1 PCS R218 61L0603123 CHIP 12K OHM 1/10W 1 PCS R210 61L0603153 CHIPR 15KOHM+-5% 1/10W 1 PCS R208 61L0603221 CHIPR 220 OHM+-5% 1/10W...
  • Page 33 JL2022 95L 90 23 TIN COATED 0 PCS R212 61L 17210252T 1K OHM 5% 1/4W 1 PCS R213 61L 17210252T 1K OHM 5% 1/4W 1 PCS R214 61L 17210252T 1K OHM 5% 1/4W 1 PCS R215 61L 17210252T 1K OHM 5% 1/4W 1 PCS R221 61L 17210252T...

  • Page 34: Schematic Diagram

    34L1044 BV C PLATE BEZEL 1 PCS 34L1046 BU T STAND-F 1 PCS 34L1047 BU T STAND-B 1 PCS 34L1048 BU T BASE 1 PCS 34L1049 BV C PLATE BASE 1 PCS 37L 464 1 HINGE ASS'Y 1 PCS 45L 76 28 RN PE BAG for MANUAL/BASE 0 PCS Q1L 330 8120...
  • Page 35 VCC5V+ VCC5V SOT-223 D202 U201 VCC12V DIODE R202 VCC2.5 VCC12V RT9164-25CG CON402(PITCH 2.54) 　 1/16W VCC2.5 CN201 ON_OFF R201 4.7K 　 1/16W C210 C211 C212 VCC12V VCC12V D201 DIODE SCHOTTKY C201 R212 4.7K 　 1/16W 0.1uF 47uF/16V 0.1uF VCC5V+ VCC5V VCC5V VCC5V onBACKLITE 6...

  • Page 36: Panel Interface

    VCC3.3 FB401 VCC2.5 FB402 VCC3.3 VCC2.5 600 OHM 600 OHM C405 C414 10uF/16V 10uF/16V VPLL VDVI VDPLL C406 C407 C408 C409 C410 C411 C412 C413 C415 C416 C417 C418 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF U401 LVA3P...
  • Page 37 VCPU VCPU RP601 RP602 R601 R602 C601 10Kx4 10Kx4 C602 22pF U601 Y 601 POWER EA/VP P0.0 VCPU ENTER P0.1 C603 11.0592MHZ RIGHT XTAL1 P0.2 LEFT P0.3 R640 10u/16V AUTO P0.4 LED_B XTAL2 P0.5 4.7K C604 22pF LED_O P0.6 LED_G RESET P0.7 HWRESET 4...
  • Page 38 8-2 Inverter/Power Board +12V L103 CON101 U101 R102 +12V_POWER( 88A304-1S) F101 L101 SI-8050SD TO263 R103 0(OP) 5A/63V(88A304-1S) L102 Vout INDUCTOR(71L55-28) C101 C102 R104 150UH 3K(OP) 220 uF/25V 220 uF/25V C108 C103 0.1 uF/25V D101 GND_F C110 SR34 OR SMAL340 470 uF/16V 0.1uF/25V C109 R101...

  • Page 39: Pcb Layout

    10. PCB Layout 10-1 .Main Board 715L1331-B...
  • Page 41 10-2 .Inverter/Power Board 715L891-3A...

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