IBM L170 Service Manual
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IBM L170 Service Manual

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IBM L170 Service Manual

SERVICE MANUAL

17" LCD Monitor
IBM L170
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.
1

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Summary of Contents for IBM L170

  • Page 1: Service Manual

    IBM L170 Service Manual SERVICE MANUAL 17” LCD Monitor IBM L170 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...

  • Page 2: Table Of Contents

    IBM L170 Service Manual Table of Contents Table of Contents -----------------------------------------------------------------2 1. MONITOR SPECIFICATIONS ----------------------------------------------------4 2. LCD MONITOR DESCRIPTION -----------------------------------------------5 3. OPERATING INSTRUCTIONS ------------------------------------------------6 3.1 GENERAL INSTRUCTIONS --------------------------------------------------6 3.2 CONTROL BUTTONS -----------------------------------------------------------6 3.3 ADJUSTING THE PICTURE --------------------------------------------------6 4. Input/Outpt Specification --------------------------------------------------------8 4.1 Input Signal Connector --------------------------------------------------------8...
  • Page 3 IBM L170 Service Manual 6.1 Main Board ----------------------------------------------------------------------19 6.2 Inverter/Power Board --------------------------------------------------------22 6.3 KeyPad Board -----------------------------------------------------------------24 7. PCB Layout -----------------------------------------------------------------------25 7.1 Main Board ---------------------------------------------------------------------25 7.2 Inverter/Power Board --------------------------------------------------------27 7.3 Keypad Board ------------------------------------------------------------------28 8. Maintainability --------------------------------------------------------------------28 8.1 Equirements and Tools Requirements ---------------------------------28 8.2 Trouble Shooting --------------------------------------------------------------29...

  • Page 4: Monitor Specifications

    IBM L170 Service Manual 1. MONITOR SPECIFICATIONS Driving system TFT Color LCD LCD Panel Size 43.2cm(17.0") Pixel pitch 0.264mm( H )x 0.264mm( V ) Viewable angle 140˚ (H) 120˚ (V) Response time (typ.) 25 ms Video Analog Input Sync. Type...

  • Page 5: Lcd Monitor Description

    IBM L170 Service Manual 2. 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 Inverter board will drive the backlight of panel and the DC-DC conversion.

  • Page 6: Operating Instructions

    IBM L170 Service Manual 3. OPERATING 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.
  • Page 7 IBM L170 Service Manual Contrast Adjusts over all screen brightness. Brightness Adjusts difference between light and dark areas. Horizontal Position Moves image left or right. Vertical Position Moves image up or down. Automatic Optimizes image(size,position,phase,and clock). Clock Clock Adjusts picture Clock.

  • Page 8: Input/Outpt Specification

    IBM L170 Service Manual 4. Input/Outpt Specification 4.1 Input Signal Connector PIN NO. DESCRIPTION DESCRIPTION PI N NO. Green Detect Cable Blue Ground DDC-Serial Data Ground H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground VGA connector layout 4.2 Factory Preset Display Modes...
  • Page 9 IBM L170 Service Manual 1152x864@75Hz 1600x900 67.50 75.000 108.000 1280x1024@60Hz 1688x1066 63.981 60.020 108.000 SXGA 1280x1024@75Hz 1688x1066 79.976 75.025 135.000 IBM MODES Horizontal Vertical Nominal Nominal Nominal Sync Sync Pixel Mode Resolution Total Frequency Freq. Polarity Polarity Clock +/- 0.5kHz...

  • Page 10: Power Supply Requirements

    IBM L170 Service Manual 4.3 Power Supply Requirements 4.3.1 Input Requirements PARAMETER RANGE CONDITION Input Voltage 100 to 240VAC RMS Universal input full range Input Frequency 60Hz @ 100VAC to 50Hz @ 240VAC Input Current Less than 2.0 Amps RMS Input voltage 100 VAC RMS ;...

  • Page 11: Panel Specification (Samsung)

    IBM L170 Service Manual 4.4 PANEL SPECIFICATION (Samsung) 4.4.1 Panel Feature -High contrast ratio, high aperture structure -TN(Twisted Nematic) mode -Wide viewing angle -High speed response -SXGA(1280 x 1024 pixels) resolution -Low power consumption -2 dual CCFTs(Cold Cathode Fluorescent Tube)

  • Page 12: Parameter Guide Line For Ccfl Inverter

    IBM L170 Service Manual 4.4.4 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  Vin    10.8  12  13.2    V    Input current  Iin    2250  2500  mA  FOR 4 LOAD  Output Current  Iout  6.0  6.5 ...
  • Page 13 IBM L170 Service Manual...

  • Page 14: Block Diagram

    IBM L170 Service Manual 5. Block Diagram 5.1 Monitor Exploded View...
  • Page 15 IBM L170 Service Manual...

  • Page 16: Software Flow Chart

    IBM L170 Service Manual 5.2 Software Flow Chart...
  • Page 17 IBM L170 Service Manual 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.

  • Page 18: Electrical Block Diagram

    IBM L170 Service Manual 5.3 Electrical Block Diagram 5.3.1 Main Board Interface (CN301) LVDS THC63LVDM83R (U301/U302) Scalar gm5120/gm2120 (Include MCU,ADC,OSD) Flash Memory W39f010P-70B (U202) (U203) Hsync, EPR_SDA Vsync EPR_SCL DVI-I only Control EEPROM D-Sub Connector Interface 24C16 Connector (CN101) (CN403)

  • Page 19: Inverter/Power Board

    IBM L170 Service Manual 5.3.2 Inverter/Power Board Inverter Block Diagram P a ra lle t-re s o n a n t V in B u c k C o n n e c to r in v e rte r...
  • Page 20 IBM L170 Service Manual Power Block Diagram...

  • Page 21: Schematic

    IBM L170 Service Manual 6. Schematic 6.1 Main Board CN101 RX2-IN RX2- A_GND RX2+IN RX2+ SGND Connect two grounds at one single point only. ED101 ED102 SCL_IN C114 C115 DDCCLK SCL_IN SDA_IN 0.1uF/16V(NC) 0.1uF/16V(NC) SDA_IN DDCDAT A_VSYNC D-SUB RX1-IN AGND...
  • Page 22 IBM L170 Service Manual +T3.3V D3.3V FB204 D3.3V SPEC(60mA) Close to respective power Pins 600OHM C210 C221 C253 C254 C201 C202 C203 C204 C205 C206 C207 C208 C209 47uF/16V 0.1uF/16V 0.01uF 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V...
  • Page 23 IBM L170 Service Manual +3.3V FB301 R316 600OHM R311 C303 22uF/16V C300 C301 C302 0 1/16W 　 0.1uF/16V 0.1uF/16V 0.1uF/16V U301 EB[0..7] LVDS_ON LVDS_EN TXIN0 PWRDWN TXIN1 TX0-E TXIN2 TXOUT0- TX0+E TXIN3 TXOUT0+ TX1-E TXIN4 TXOUT1- TX1+E TXIN6 TXOUT1+ TX2-E...

  • Page 24: Inverter/Power Board

    IBM L170 Service Manual 6.2 Inverter/Power Board TO INVERTER R920 C920 47 1/2W 　 0.001uF/500V T901 F902 FB903 D910 31DQ10 L903 0 1/16W 　 0 1/16W 　 CN102 DB901 R906 D911 31DQ10 2KBP06M 1M 1/4W R904 C906 R903 C922 C924 C928 3.3V...
  • Page 25 IBM L170 Service Manual Q203 SI4431DY-T1 C215 22pF/3KV CN201 +12V L201 R212 3.9K　 D201 R224 R225 R226 C201 C223 C202 Q202 C225 R214 SR24 D203 2K　 2K　 2K 1/16W C216 　 CN202 150uF/25V 150uF/25V 0.1uF/25V DTA144WKA 1uF/25V 3.9K 1/16W RLZ11B...

  • Page 26: Keypad Board

    IBM L170 Service Manual 6.3 KeyPad Board 10/21 R404 620 1/16W 　 R414 Brightness PWM0 PWM0 R415 0 1/16W C416 　 1K 1/16W 　 22uF/16V CN401 BackLight On/Off CN403 U106D R405 4.7K 1/16W 　 74LVC14A PBIAS P.4 R402 MAIN REDLED...

  • Page 27: Pcb Layout

    IBM L170 Service Manual 7. PCB Layout 7.1 Main Board...
  • Page 28 IBM L170 Service Manual...

  • Page 29: Inverter/Power Board

    IBM L170 Service Manual 7.2 Inverter/Power Board...

  • Page 30: Keypad Board

    IBM L170 Service Manual 7.3 Keypad Board 8. Maintainability 8.1 Equirements and Tools Requirement 1.) Voltmeter. 2.) Oscilloscope. 1.) Pattern Generator. 2.) DDC Tool with a IBM Compatible Computer. 3.) Alignment Tool. 4.) LCD Color Analyzer. 5.) Service Manual. 6.) User Manual.

  • Page 31: Trouble Shooting

    IBM L170 Service Manual 8.2 Trouble Shooting 8.2.1 Main Board 1.NO SCREEN APPEAR Measured U401 pin 2 = 2.5 V? Check Correspondent component. Measured U402 LT1117 pin 2= 3.3V? Is there any shortage or cold solder? Measured CN402 pin 1/2 = 5V? Yes.there have OSD show...
  • Page 32 IBM L170 Service Manual 2.PANEL-POWER CIRCUIT Check the PPWR panel power relative circuit, check R302 should have response from 0V to 5V Q301, Q302(pin 5,6,7,8) When we switch the power switch from on to off In normal operation, when LED =green, R302...
  • Page 33 IBM L170 Service Manual 4.U203-DATA OUTPUT NG , no transition Measured DCLK(R240) DVS, DHS (pin 117,116 from U203 ) Is the waveform ok? DCLK around 48 MHZ , DVS=60.09Hz , DHS around 80 KHz ?(refer to input Replace GM5120 /2120 (U203) or signal=640x480@60 Hz 31k, and LED is replace MAINBOARD.

  • Page 34: Power/Inverter Board

    IBM L170 Service Manual 8.2.2 Power/Inverter Board 1.) No power     Check to CN102 Pin1 and pin2 = 5V Check Interface board Check AC line volt 120V or 220V Change F901 , check BD901,Q903,IC901 Check the voltage of C905(+)
  • Page 35 IBM L170 Service Manual 2.) W / LED , No Backlight Check C201(+) =12V Change F902 Check D201/Q209/Q210 or D202/Q211/Q212 Check ON/OFF signal Check Interface board Check U201 pin9=12V Change Q201 or Q202 Check the pin1 of U201 have sawtooth wave Change U201 Check D201(-),D202(-) have the output of square wave at short time.

  • Page 36: Keypad Board

    IBM L170 Service Manual 8.2.3 KeyPad Board OSD is unstable or not working Connect KeyPad Board Is KeyPad Board connecting normally ? Replace Button Switch Is Button Switch normally ? Replace KeyPad Board Is KeyPad Board Normally ? Check Main Board...

  • Page 37: White-Balance, Luminance Adjustment

    IBM L170 Service Manual 9. White-Balance, Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. Before started adjust white balance ,please setting the Chroma-7120 MEM. channel 1 to 6500 color, MEM. channel 2 to 7200 color, and MEM.

  • Page 38: Edit Content

    IBM L170 Service Manual 17 Switch the chroma-7120 to RGB-mode (with press “MODE” button ) 18 switch the MEM.channel to Channel 03 ( with up or down arrow on chroma 7120 ) 19 The lcd-indicator on chroma 7120 will show x = 296 ±10, y = 311 ±10, Y = 190 ±5 cd/m...

  • Page 39: Bom List

    IBM L170 Service Manual 11. BOM List CBPC780KKDI3 CONVERSION BOARD 1 PCS KEPC780KI3 KEY BOARD 1 PCS PWPC7425A1I2 LCD POWER ASS'Y 1 PCS 2L6008 1 SCREW 2 PCS 12L 404 1 SCREW RUBBER 4 PCS 15L5689 2 A GND CLAMP...
  • Page 40 IBM L170 Service Manual 1186 SMALL TAPE 8 CM 1208 A TAPE 2 PCS 1211501 綯轰 1 PCS 52L6020 3AIBM PROTECT FILM 0.1 PCS 52L6022 2 SMALL TAPE 15 CM 52L6025 11531 INSULATE SHEET 1 PCS 52L6025 11532 INSULATE SHEET...
  • Page 41 IBM L170 Service Manual 715L 972 1 6 1 PCS 55L 23520 0.06 ML 55L 100600 A ň 聁瞜奎 0.5 G 55L 100602 奎籌 0.85 G U301 56L 561 8 THC63LVDM83R 1 PCS U302 56L 561 8 THC63LVDM83R 1 PCS...
  • Page 42 IBM L170 Service Manual R414 61L0603000 CHIPR 0OHM +-5% 1/16W 1 PCS R205 61L0603100 1F CHIP 1KOHM 1/16W 1% 1 PCS R137 61L0603101 CHIPR 100 OHM +-5% 1/16 1 PCS R139 61L0603101 CHIPR 100 OHM +-5% 1/16 1 PCS R141...
  • Page 43 IBM L170 Service Manual R130 61L0603470 CHIPR 47 OHM +-5% 1/16W 1 PCS R240 61L0603470 CHIPR 47 OHM +-5% 1/16W 1 PCS R144 61L0603472 CHIPR 4.7K OHM +-5% 1/1 1 PCS R201 61L0603472 CHIPR 4.7K OHM +-5% 1/1 1 PCS...
  • Page 44 IBM L170 Service Manual C256 65L0603103 32 0.01UF+-10% 50V X7R 1 PCS C258 65L0603103 32 0.01UF+-10% 50V X7R 1 PCS C322 65L0603103 32 0.01UF+-10% 50V X7R 1 PCS C403 65L0603103 32 0.01UF+-10% 50V X7R 1 PCS C410 65L0603103 32 0.01UF+-10% 50V X7R...
  • Page 45 IBM L170 Service Manual C241 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS C242 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS C244 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS C248 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS...
  • Page 46 IBM L170 Service Manual C312 67L 312220 3 SMD 22UF +-20% 16V 1 PCS C416 67L 312220 3 SMD 22UF +-20% 16V 1 PCS C221 67L 312470 3 SMD 47UF +-20% 16V 1 PCS C222 67L 312470 3 SMD 47UF +-20% 16V...
  • Page 47 IBM L170 Service Manual ZD106 93L 39149 MLL5232B BY FULL POWER 0 PCS ZD107 93L 39149 MLL5232B BY FULL POWER 0 PCS ZD108 93L 39149 MLL5232B BY FULL POWER 0 PCS ZD109 93L 39149 MLL5232B BY FULL POWER 0 PCS...
  • Page 48 IBM L170 Service Manual IC902 56L 139 3B PC123 Y82 1 PCS IC901 56L 379 32 SG6841D BY SYSTEM 1 PCS Q207 57L 414 2 MPS3906,126 1 PCS Q208 57L 414 2 MPS3906,126 1 PCS Q209 57L 761 6 2SC5706 DIP SANYO...
  • Page 49 IBM L170 Service Manual C925 67L 215102 3K 綯筿秆筿甧 1000UF/16V 0 PCS C905 67L305S10114H HTR101M2GL33VR 1 PCS FB902 71L 55 19 BEAD RH 3.5*9*0.8 AB 03 1 PCS FB901 71L 55 29 FERRITE BEAD 1 PCS L902 73L 174 26 LS...
  • Page 50 IBM L170 Service Manual 705L 780 57 01 Q903 ASS'Y 1 PCS PT201 6L 31502 1.5MM RIVET 2 PCS PT202 6L 31502 1.5MM RIVET 2 PCS 715L1013 1 1 PCS FB904 95L 90 23 TIN COATED 0 PCS J101 95L 90 23...
  • Page 51 IBM L170 Service Manual R907 61L 17210552T 1MEGOHM 5% 1/4W 1 PCS R224 61L 17215252T CFR 1.5K OHM+-5% 1/4W 1 PCS R225 61L 17215252T CFR 1.5K OHM+-5% 1/4W 1 PCS R920 61L 17247052T 47OHM 5% 1/4W 1 PCS R922 61L 17247052T...
  • Page 52 IBM L170 Service Manual D206 93L 64 1152T 1N4148 1 PCS D207 93L 64 1152T 1N4148 1 PCS D208 93L 64 1152T 1N4148 1 PCS D209 93L 64 1152T 1N4148 1 PCS D210 93L 64 1152T 1N4148 1 PCS D903...
  • Page 53 IBM L170 Service Manual IC905 56L 563 21 AP1084K33 0 PCS Q203 56L 566 10 SI4431DY-T1-SMT 0 PCS Q204 56L 566 10 SI4431DY-T1-SMT 0 PCS U201 56L 608 1 TL1451ACD 0 PCS U201 56L 622 1 BA9741F-SMT 1 PCS Q203...
  • Page 54 IBM L170 Service Manual C210 65L0805105 27 CHIP 1UF 25V Y5V 0805 1 PCS C211 65L0805105 27 CHIP 1UF 25V Y5V 0805 1 PCS C212 65L0805105 27 CHIP 1UF 25V Y5V 0805 1 PCS C219 65L0805105 27 CHIP 1UF 25V Y5V 0805...

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