LG L1910B Service Manual

LG L1910B Manual

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  • LG L1910B | Service Manual - Page 1
    :http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-62 MODEL: L1910B (L1910BM-AF**R) ( ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. L1810B *To apply the Mstar Chip.
  • LG L1910B | Service Manual - Page 2
    -1-
  • LG L1910B | Service Manual - Page 3
    CONTENTS SPECIFICATIONS 2 PRECAUTIONS 4 TIMING CHART 5 OPERATING INSTRUCTIONS 6 WIRING DIAGRAM 8 BLOCK DIAGRAM 9 DESCRIPTION OF BLOCK DIAGRAM 10 ADJUSTMENT 12 TROUBLESHOOTING GUIDE 13 EXPLODED VIEW 18 REPLACEMENT PARTS LIST 20 SCHEMATIC DIAGRAM 24 SPECIFICATIONS 1. LCD
  • LG L1910B | Service Manual - Page 4
    T. M. D. S. Data1+ 11 T. M. D. S. Data1/3 Shield 12 T. M. D. S. Data313 T. M. D. S. Data3+ 14 +5V Power 15 Ground (return for +5V, H. Sync. and V. Sync.) Pin 16 17 18 19 20 21 22 23 24 Signal (DVI-D) Hot Plug Detect T. M. D. S. Data0T. M. D. S. Data0+ T. M. D. S. Data0/5 Shield T. M. D. S. Data5T
  • LG L1910B | Service Manual - Page 5
    monitor that are important for safety. These parts are marked on the schematic diagram and the replacement parts list. It is essential that these critical parts should be replaced with the manufacturer's specified parts screwdriver to protect yourself from shock hazard during service operation. -4-
  • LG L1910B | Service Manual - Page 6
    60 54 35 48 33 120 16 88 23 160 21 224 39 160 29 176 28 144 39 200 31 248 38 248 38 Resolution 640x350 70Hz 720x400 70Hz 640x480 60Hz 640x480 75Hz 800x600 60Hz 800x600 75Hz 832x624 75Hz 1024x768 60Hz 1024x768 75Hz 1152x900 75Hz 1152x900 65Hz 1280x1024 60Hz 1280x1024
  • LG L1910B | Service Manual - Page 7
    INSTRUCTIONS FRONT VIEW REAR VIEW L1810B D-Sub Signal Connect DVI Connect Front Control Panel Power Connect USB Port Front Control Panel LightView 6 4 3 5 12 1. Power ON/OFF Button Use this button to turn the monitor on or off. 2. Power the manual adjustment resolution size(display mode).
  • LG L1910B | Service Manual - Page 8
    "hot" plug (attach them while the computer is running) or unplug them while maintaining Plug and Play auto detection and configuration. This monitor has an integrated BUS-powered USB hub, allowing up to 2 other USB devices to be attached it. USB connection 1. Connect the upstream port of the Display
  • LG L1910B | Service Manual - Page 9
    WIRING DIAGRAM Connector Ass'y P/N: 6631T20023A CN105 CN104 CN002 CN102 CN103 Connector Ass'y P/N: 6631T11012W J705 J702 J706 Connector Ass'y P/N: 6631T20022E -8-
  • LG L1910B | Service Manual - Page 10
    R,G,B differential LV DS (Low V oltage D ifferential S ignaling) USB HUB D/S D/S U/S 2.5V MST9131B including (ADC/LVDS/SCALER 3.3V /INPUT SWITCHING /TMDS ) MTV312 Micom D-SUB R,G,B, H/ V Sync Digital Signal DVI-D
  • LG L1910B | Service Manual - Page 11
    of the Scaler, ADC and TMDS receiver . The Scaler gets the video signal converted analog to digital, interpolates input to 1280 X 1024 resolution signal and outputs 8-bit R, G, B signal to transmitter. 2. Power Part. This part consists of the one 3.3V regulator, and two 2.5V drop diodes to convert
  • LG L1910B | Service Manual - Page 12
    control and to provide the driver signal to power switch,to adjust the duty cycle during different AC input and output loading condition to achieve the dc output stabilized, and also the over power protection is also monitor by this part. 5. Photo-Coupler isolation. This part function is to feed
  • LG L1910B | Service Manual - Page 13
    .0 User Manual Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don't need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 2. EDID Read & Write 1) Run WinEDID.exe 1. Port Setup a) Copy "UserPort.sys" file to "c:\WINNT\system32\drivers
  • LG L1910B | Service Manual - Page 14
    SERVICE OSD 1) Turn off the power switch at the front side of the display. 2) Wait for about 3 seconds and press MENU, POWER switch with 1 second OFF ON 5V F C PARALLEL VGS A MONITOR B V-SYNC ST POWER Power inlet (required) 220 Power Select Switch (110V/220V) Power LED E ST Switch F V-Sync On
  • LG L1910B | Service Manual - Page 15
    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK J705 VOLTAGE PIN5, PIN6 (5V)? YES CHECK U501 PIN 8 Voltage (5V) ? YES CHECK KEY CONTROL CONNECTOR ROUTINE CHECK POWER NO BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE NO CHECK 5VS LINE (OPEN CHECK) NO
  • LG L1910B | Service Manual - Page 16
    2. NO RASTER (OSD IS NOT DISPLAYED) - LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 PIN5, PIN6 5V? YES J705 PIN 9 5V? YES J705 PIN10 5V? YES NO CHECK LIPS NO CHECK MICOM INV ON/OFF PORT. 1. CONFIRM BRIGHTNESS NO OSD CONTRL STATE. 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE
  • LG L1910B | Service Manual - Page 17
    (OSD IS NOT DISPLAYED) - MST9131B NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN 8, 114 (3.3V)? YES U201 PIN122, 123 OSCILLATE AS 12MHZ? YES NO CHECK U801 1. CHECK PIN122, 123 NO SOLDERING CONDITION 2. CHECK X501 3. TROUBLE IN U201 U501 PIN43 IS 64KHz H-SYNC? PIN44 IS 60Hz V-SYNC? IS PULSE
  • LG L1910B | Service Manual - Page 18
    TROUBLE IN DPM 4. TROUBLE IN DPM CHECK R756, R760 (SYNC) ? YES CHECK U501 PIN 43.44 SYNC PULSE? YES TROUBLE IN U501 NO CHECK PC PC IS NOT GOING INTO DPM OFF MODE NO CHECK H/V SYNC LINE - 17 -
  • LG L1910B | Service Manual - Page 19
    EXPLODED VIEW 3 11 10 7 2 1 13 12 8 9 6 14 4 5 - 18 -
  • LG L1910B | Service Manual - Page 20
    L1910 L1810 CONTROL TOTAL BRAND CONTROL 6 4951TKS126G METAL ASSEMBLY, FRAME L1910B/PM LPL/CMO/FUSITSU(226G) 6871TPT271E PWB(PCB) ASSEMBLY,POWER, 19" M-CHASSIS POWER BLACK LQ800 DM 6866TDV004C CABLE,DVI, UL20276 DT 2000MM GRAY(85964) LB885C DM 14 6866TDV004K CABLE,DVI, UL20276 DT 2000MM BLACK (
  • LG L1910B | Service Manual - Page 21
    68PF 1608 50V 5% R/TP NP0 100PF 1608 50V 5% R/TP NP0 0.01UF 1608 50V 10% R/TP B(Y5 0.01UF 1608 50V 10% R/TP B(Y5 *S *AL LOC. NO. PART NO. DATE: 2004. 3. 24. DESCRIPTION / SPECIFICATION C723 C724 C725 C726 C727 C728 C732 C733 C734 C735 C737 C738 C739 C740 C741 C742 C743 C760 C801
  • LG L1910B | Service Manual - Page 22
    W 5% 1608 R/TP 4.7K OHM 1/10 W 5% 1608 R/TP 100 OHM 1/10 W 5% 1608 R/TP 100 OHM 1/10 W 5% 1608 R/TP 100 OHM 1/10 W 5% 1608 R/TP *S *AL LOC. NO. PART NO. DATE: 2004. 3. 24. DESCRIPTION / SPECIFICATION R527 R528 R529 R530 R531 R532 R534 R535 R537 R541 R542 R543 R544 R545 R546 R547 R548 R549 R555
  • LG L1910B | Service Manual - Page 23
    *S *AL LOC. NO. PART NO. DATE: 2004. 3. 24. DESCRIPTION / SPECIFICATION R772 R/TP 0.1M 50V Z F TA52 0.1M 50V Z F TA52 "ISP1122ABD 32P,LQFP R/TP USB" *S *AL LOC. NO. PART NO. DATE: 2004. 3. 24. DESCRIPTION / SPECIFICATION IC802 L801 L802 L803 L804 L805 L807 L808 L809 L810 L811 L812 R801 R802
  • LG L1910B | Service Manual - Page 24
    SCHEMATIC DIAGRAM 1. SCALER - 23 -
  • LG L1910B | Service Manual - Page 25
    2. MICOM - 24 -
  • LG L1910B | Service Manual - Page 26
    3. POWER - 25 -
  • LG L1910B | Service Manual - Page 27
    4. CONNECTOR/JACKS - 26 -
  • LG L1910B | Service Manual - Page 28
    P/NO : 3828TSL095L Mar. 2004 Printed in Korea
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COLOR MONITOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE
SAFETY PRECAUTIONS
IN THIS MANUAL.
CHASSIS NO. :
CL-62
MODEL:
L1910B
(L1910BM-AF**R)
(
) **Same model for Service
*To apply the
Mstar Chip
.
L1810B