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Lenovo LXH-GL17L3
SERVICE MANUAL
LXH-GL17L3
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
OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.
Page 1 of 47
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Summary of Contents for Lenovo LXH-GL17L3
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Page 1: Service Manual
Lenovo LXH-GL17L3 SERVICE MANUAL LXH-GL17L3 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 OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS. -
Page 2: Table Of Contents
Lenovo LXH-GL17L3 Table of Content Revision List…………………………………………………………………………………………………………. 1. Monitor Specifications………………………………………………………………………………………….. 2. LCD Monitor Description……………………………………………………………………………………….. 3. Operating Instructions………………………………………………………………………………………….. 3.1 General Instructions…………………………………………………………………………………………... 3.2 Control Buttons………………………………………………………………………………………………... 3.3 Adjusting the Picture………………………………………………………………………………………….. 4. Input/Output Specification……………………………………………………………………………………... 4.1 Input Signal Connector……………………………………………………………………………………….. 4.2 Factory Preset Display Modes……………………………………………………………………………….. 4.3 Panel Specification………………………………………………………………………………………….…... -
Page 3: Revision List
Lenovo LXH-GL17L3 Revision List Revision Date Change Description Sep-08-05 Original Revision Page 3 of 47... -
Page 4: Monitor Specifications
Lenovo LXH-GL17L3 1. MONITOR SPECIFICATIONS Driving system TFT Color LCD Size 43.2cm(17.0") LCD Panel Pixel pitch 0.264mm( H )x 0.264mm( V ) Viewable angle 150˚ (H) 130˚ (V) Response time (type) 8 ms for CMO panel Sync. Type H/V TTL... -
Page 5: Lcd Monitor Description
Lenovo LXH-GL17L3 2. LCD MONITOR DESCRIPTION The LCD MONITOR will contain a main board, an inverter/PWPC board and a keypad board which house the flat panel control logic, brightness control logic and DDC. The power board will provide the AC to DC voltage to drive backlight and the main board chips each voltage. -
Page 6: Operating Instructions
Lenovo LXH-GL17L3 3. OPERATING INSTRUCTIONS 3.1 GENERAL INSTRUCTIONS Press the power button to turn the monitor on or off. The other control buttons are located in the side of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. -
Page 7: Adjusting The Picture
Lenovo LXH-GL17L3 3.3 ADJUSTING THE PICTURE Main Menu Sub Menu Description Brightness adjustment Contrast adjustment Save the adjusted value and return back to the previous menu Cancel the adjusted value and return back to the previous menu Adjust the horizontal... - Page 8 Lenovo LXH-GL17L3 Cancel the adjusted value and return back to the previous menu Adjust Picture Phase to reduce Horizontal-Line noise Adjust Picture Clock to reduce Vertical-Line noise Save the adjusted value and return back to the previous menu Cancel the adjusted value...
- Page 9 Lenovo LXH-GL17L3 OSD MENU will disappear after 5 seconds untouched OSD MENU will disappear after 10 seconds untouched OSD MENU will disappear after 30 seconds untouched OSD MENU will disappear after 60 seconds untouched Recall 7800 Color temperature from EEPROM...
- Page 10 Lenovo LXH-GL17L3 Adjust the horizontal position of the OSD Adjust the vertical position of the Save the adjusted value and return back to the previous menu Cancel the adjusted value and return back to the previous menu EXIT OSD To return the setting value to...
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Page 11: Input/Output Specification
Lenovo LXH-GL17L3 4. INPUT/OUTPUT SPECFICATION 4.1 Input Signal connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION Green Logic GND Blue Ground DDC-Serial Data Ground H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground VGA Connector layout Page 11 of 47... -
Page 12: Factory Preset Display Modes
Lenovo LXH-GL17L3 4.2 FACTORY PRESET DISPLAY MODES： TIMING FH (KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ (DOT/LINE) (DOT/LINE) (DOT/LINE) .(MHZ) NTSC 31.469 25.175 59.940 31.25 27.625 50Hz − 640x480 31.469 25.175 VGA-480 −... -
Page 13: Panel Specification
Lenovo LXH-GL17L3 4.3 PANEL SPECIFICATION 4.3.1 PANEL FEATURE - Wide viewing angle - High contrast ratio - Fast response time - High color saturation (EBU Like Specifications) - SXGA (1280 x 1024 pixels) resolution - DE (Data Enable) only mode... -
Page 14: Parameter Guideline For Ccfl Inverter
Lenovo LXH-GL17L3 4.4.3.2 Optical Characteristics The relative measurement methods of optical characteristics are shown in 4.4.3.2 .The following items should be measured under the test conditions described in 4.4.3.1 and stable environment shown in Note (6). 4.3.4 Parameter guideline for CCFL Inverter 1. -
Page 15: Block Diagram
Lenovo LXH-GL17L3 5. BLOCK DIAGRAM 5.1 Monitor Exploded View Page 15 of 47... -
Page 16: Software Flow Chart
Lenovo LXH-GL17L3 5.2 Software Flow Chart Page 16 of 47... - Page 17 Lenovo LXH-GL17L3 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. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.
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Page 18: Electrical Block Diagram
Lenovo LXH-GL17L3 5.3 ELECTRICAL BLOCK DIAGRAM 5.3.1 SCALAR BOARD BLOCK DIAGRAM LCD Interface (LVDS) Scalar MST8111B W78E65 (Include ADC，OSD) Crystal 24MHz OSD Control Interface (Keypad) D-Sub Connector EPR_SDA EPR_SCL DB15_SDA Crystal DB15_SCL 14.31818 MHz EEPROM Page 18 of 47... -
Page 19: Inverter Board
Lenovo LXB-L17C 5.3.2 INVERTER BOARD BLOCK DIAGRAM Parallet-resonant Buck Connector inverter Dimming control Driver Circuit (PWM) (阀菠瓜) Parallet-resonant inverter CCFL Driver Circuit Dimming control Page 19 of 47... -
Page 20: Main Board
Lenovo LXB-L17C 6.SCHEMATIC 6.1 MAIN BOARD 715L1129-1A-LE3 MST8011/8111 SCHEMATIC GNDR GNDR GNDG GNDG DDC_CLK VCC2.5 VCC3.3 VAA1 VAA2 VAA3 VAA4 DDC_DAT GNDB GNDB ST_DET1 HSYNC HSYNC ST_DET2 VSYNC VSYNC VCC2.5 VCC3.3 VAA1 VAA2 VAA3 CLK+ CLK+ VAA4 CLK- CLK- 3.INPUT... - Page 21 Lenovo LXB-L17C VCC5V+ VCC5V SOT-223 D202 VCC12V U201 GS1D R202 VCC2.5 VCC12V RT9164-25CG CN201 1/16W VCC2.5 ON_OFF R201 4.7K 1/16W C210 C211 C212 VCC12V VCC12V D201 SS14 C201 R212 4.7K 1/16W 0.1uF 47uF/16V 0.1uF VCC5V+ VCC5V VCC5V...
- Page 22 Lenovo LXB-L17C FB301 1/16W R301 1/16W C304 0.047uF FB302 1/16W R302 1/16W C305 0.047uF FB303 1/16W R303 1/16W C306 0.047uF CN301 R304 1/16W C307 0.001uF CLK_DDC DAT_DDC R325 C301 C302 C303 VGA_CON PC5V ...
- Page 23 Lenovo LXB-L17C 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...
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Page 24: Panel Interface
Lenovo LXB-L17C PA[0..9] PA[0..9] LVA3P CN503 LVA3M LVACKP LVACKM LVB0M RXO0- RXO0+ LVB0P LVA2P LVB1M RXO1- RXO1+ LVB1P LVA2M LVB2M RXO2- RXO2+ LVB2P LVBCKM RXOC- RXOC+ LVBCKP LVA1P RXO3- RXO3+ LVB3M LVB3P LVA1M LVA0M RXE0- RXE0+ LVA0P LVA1M RXE1- RXE1+... - Page 25 Lenovo LXB-L17C VCPU VCPU RN601 RN602 R601 R602 C601 1/16W 1/16W 0.1uF 1/16W 1/16W C602 22pF U601 POWER EA/VP P0.0 ENTER P0.1 C603 Y601 RIGHT XTAL1 P0.2 10uF/16V 20MHz LEFT P0.3 AUTO P0.4 LED_B XTAL2 P0.5...
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Page 26: Inverter Board
Lenovo LXB-L17C 6.2 Inverter Board 715L1085-4-4 +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... - Page 27 Lenovo LXB-L17C Q203 SI4431 OR AO4411 L201 150UH C215 F201 L205 4A/63V +12V 71A55-19 OPEN Q202 R224 R225 R226 R227 C202 C201 C230 Q201 DTA144WKA D203 C216 CON201 0.1U/25V 150U/25V 1000P/50V R212 R216 PT201 DTC144WKA 3.9K C213 C204 C211 Q209...
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Page 28: Pcb Layout
Lenovo LXB-L17C 7. PCB LAYOUT 7.1 MAIN BOARD 715L1129-1A-LE3 Page 28 of 47... -
Page 29: Inverter Board
Lenovo LXB-L17C 7.2 Inverter Board 715L1085-4-4 7.3 Key Board 715L1195-3 Page 29 of 47... -
Page 30: Maintainability
Lenovo LXB-L17C 8. MAINTAINABILITY 8.1 EQUIPMENT AND TOOLS REQUIREMENT 1、Voltmeter. 2.、Oscilloscope. 3、Pattern Generator. 4、DDC Tool with a IBM Compatible Computer. 5、Alignment Tool 6、LCD Color Analyzer. 7、Service Manual. 8、User Manual. Page 30 of 47... -
Page 31: Trouble Shooting
Lenovo LXB-L17C 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 AC of 100-240 is normal Reinsert or check the Adapter/Inverter section Measure U201 PIN2=2.5V... - Page 32 Lenovo LXB-L17C No picture (LED orange) No picture The button if Y601 oscillate Replace Y601 under control waveform is normal Check reset circuit of Check Correspondent component U601 is normal Measure U201 PIN2=2.5V U202 PIN2=3.3V Replace U601 Replace U201, U202...
- Page 33 Lenovo LXB-L17C White screen White screen Measure Q202 base Y601 oscillate waveform is normal is high level? Replace Y601 Check Q202 is broken or Check reset circuit of CN503 solder? U601 is normal Check Correspondent Check Correspondent component. component. Replace PANEL...
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Page 34: Power /Inverter/Board
Lenovo LXB-L17C 8.2.2 KEYPAD BOARD OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally? Check Main Board... - Page 35 Lenovo LXB-L17C 8.2.3 Power Board W / LED, No Backlight Check C201 (+) =12V Check F201 Check main board Check ON/OFF signal Check main board Check U201 pin9=12V voltage Change Q201 or Q202 Check the pin1 of U201 have saw tooth wave...
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Page 36: White-Balance, Luminance Adjustment
Lenovo LXB-L17C 9 white-Balance, Luminance adjustment Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. 1. How to do the Chroma-7120 MEM. Channel setting A. Reference to chroma 7120 user guide B. Use “ SC” key and “ NEXT” key to modify XyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust 2. -
Page 37: Edid Content
Lenovo LXB-L17C 10. EDID CONTENT Analog EDID 112: Page 37 of 47... -
Page 38: Bom List
45G 88609 B EPE COVER 45G 88626 1 PE BAG FOR MONITOR 50G 600 2 HANDLE1 50G 600 3 HANDLE2 1185 52 lenovo middle tape 1186 SMALL TAPE 1207 A ALUMINIUM TAPE 85G6076 1 SHIELD 89G 171500507 DC CABLE M1G 330 4128... - Page 39 Lenovo LXB-L17C 750GLM70E59 CMO 17" E5-L09 PANEL E089B 89G1735GAA 7 SIGNAL CABLE E095 95G8018 30628 WIRE HARNESS CBPC780KMLH7 AIC780KMLH6 MAIN BOARD 40G 45762412B CBPC LABEL C202 67G215B221 4H LOW E.S.R 220UF +-20% 2 C204 67G215B221 4H LOW E.S.R 220UF +-20% 2...
- Page 40 Lenovo LXB-L17C C403 65G0603220 31 CER1 0603 NP0 50V 22P P C404 65G0603104 32 CHIP 0.1UF 50V X7R C405 67G 312100 3 SMD 10UF +-20% 16V C406 65G0603104 32 CHIP 0.1UF 50V X7R C407 65G0603104 32 CHIP 0.1UF 50V X7R...
- Page 41 Lenovo LXB-L17C C616 65G0603473 32 CHIP 0.047UF 50V X7R D201 93G1004 3 SS14 D202 93G1020 1 S GS1D D301 93G 6433P BAV99 D302 93G 6433P BAV99 D303 93G 6433P BAV99 D304 93G 64 42 P BAV70 SOT-23 D317 93G 39149...
- Page 42 Lenovo LXB-L17C R209 61L0603000 RST SM 0603 JUMP MAX 0R R211 61L0603103 RST SM 0603 RC0603 10K R212 61L0603472 RST SM 0603 RC0603 4K7 R213 61L0603104 RST SM 0603 RC0603 100K R301 61L0603101 RST SM 0603 RC0603 100R R302 61L0603101...
- Page 43 Lenovo LXB-L17C R616 61L0603472 RST SM 0603 RC0603 4K7 R617 61L0603471 CHIPR 470 OHM+-5% 1/10W R618 61L0603471 CHIPR 470 OHM+-5% 1/10W R619 61L0603472 RST SM 0603 RC0603 4K7 R620 61L0603101 RST SM 0603 RC0603 100R R621 61L0603101 RST SM 0603 RC0603 100R...
- Page 44 Lenovo LXB-L17C CN202 33G8021 2D AC CONN.2P R/A 87210-0236 CN203 33G8021 2D AC CONN.2P R/A 87210-0236 CN204 33G8021 2D AC CONN.2P R/A 87210-0236 CON102 95G8021 12502 HARNESS 12P 60MM L101 71G 55 28 FERRITE BEAD 7.62*5.08* L102 73G 253138 Y...
- Page 45 Lenovo LXB-L17C Q202 57G 760 4B PDTA144WK SOT346 Q203 57G 763 3 AO4411 SO-8 Q204 57G 763 3 AO4411 SO-8 Q205 57G 417 4 PMBS3904/PHILIPS-SMT(04 Q206 57G 417 4 PMBS3904/PHILIPS-SMT(04 Q207 57G 417 6 PMBS3906/PHILIPS-SMT(06 Q208 57G 417 6 PMBS3906/PHILIPS-SMT(06...
- Page 46 Lenovo LXB-L17C 715L1085 4 4 D205 93G 64 1152T 1N4148 D206 93G 64 1152T 1N4148 D207 93G 64 1152T 1N4148 D208 93G 64 1152T 1N4148 D209 93G 64 1152T 1N4148 D210 93G 64 1152T 1N4148 J010 71G 55 19 T FERRITE BEAD D9X3.
- Page 47 Lenovo LXB-L17C ZD107 93G 39S155 BZT52-C5V6 12G6018 1 IG SCREW STOPPER 12G6023 1 RUBBER FOOT 12G6023 2 rubber foot 15G6081 1 VESA BRACKET 15G6082 1 STAND BRACKET 15G6083 1 BASE BRACKET 33G6048 JF L KEY PAD 33G6049 1 LENS 34G6033AIE B...