LG L1933TR-SF Service Manual

LG L1933TR-SF - LG - 19" LCD Monitor Manual

Get LG L1933TR-SF - LG - 19inch LCD Monitor PDF manuals and user guides View all LG L1933TR-SF manuals
Add to My Manuals
Save this manual to your list of manuals

LG L1933TR-SF manual content summary:

  • LG L1933TR-SF | Service Manual - Page 1
    Only Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM57B MODEL: L1733TR (L1733TR-SFQ.A**MQP) L1933TR (L1933TR-SFQ.A**MQP,A**RQP) ( ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the MSTAR Chip
  • LG L1933TR-SF | Service Manual - Page 2
    SERVICE OSD 17 TROUBLESHOOTING GUIDE 18 WIRING DIAGRAM 24 EXPLODED VIEW 25 REPLACEMENT PARTS LIST 27 SCHEMATIC DIAGRAM 31 SPECIFICATIONS 1. LCD CHARACTERISTICS Type : TFT Color LCD Module Active Display Area : 17 inch - L1733T : 19 inch less than 1 W AMBER POWER S/W Off - - less than
  • LG L1933TR-SF | Service Manual - Page 3
    There are some special components used in LCD 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 to prevent electric shock, fire or
  • LG L1933TR-SF | Service Manual - Page 4
    , lubrication of contacts in not required. 6. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped. 7. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are
  • LG L1933TR-SF | Service Manual - Page 5
    Power Output, Transistor Device Removal/Replacement 1. Heat and remove all solder from around the transistor leads. 2. Remove the heat sink mounting screw (if so equipped). 3. Carefully remove . Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -5- LGE
  • LG L1933TR-SF | Service Manual - Page 6
    the component side of the circuit board. 1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous condition . Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -6- LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 7
    X 400 640 x 480 640 x 480 800 x 600 800 x 600 832 x 624 1024 x 768 1024 x 768 1152 x 870 1152 x 900 1280 x 1024 1280 x 1024 Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -7- LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 8
    Soft pad on the table. # 3 Monitor on the pad. # 4-1 Pull up the stand part. # 4-2 Hold the head & stand base and then Twist Stand until "Click". # 5 Separate head & stand Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -8- LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 9
    # 6 Remove the screws. # 8 # 7 1. Pull the front cover upward. 2. Then, let the all latches are separated.(#3-1~3-2) 3. Put the front face down. # 9 Disassemble back cover. Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -9- LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 10
    the bottom to the outside and Separate Stand Body & Base. (Reference the #1-2) # 2 # 3 After finished repair, necessarily push 4ea Latches to inside for restoration. Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 10 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 11
    latch of right and left. # 4 Push the latch to the inside. # 5 Push the base to the opposite direction. Confirm the condition of separation. Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 11 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 12
    - 12 - Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only DVI-D D-Sub 5V 3.3V Analog (R/G/B) Digital EEPROM (EDID) 1.8V LIPS 5V Filter 12V 12V Inverter (4 lamps) 12V TSUMx6AL ADC TMDS
  • LG L1933TR-SF | Service Manual - Page 13
    - 13 - Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Module Vcc Main Board (Scaler & DC DC converter) POWER 12V 5V Inverter On/OFF (3.3V) Dimming (Lamp Current Control) Power Control IC Start Aux Drive SMPS 12V 5V Line
  • LG L1933TR-SF | Service Manual - Page 14
    provided for LCD panel. Also, 5V is converted 3.3V and 1.8V by regulator. Converted power is provided for IC in the main board. The inverter converts from DC12V to AC 700Vrms and operates back-light lamps of module. 3. MICOM Part. This part is include video controller part. And this part consists of
  • LG L1933TR-SF | Service Manual - Page 15
    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 back the DC
  • LG L1933TR-SF | Service Manual - Page 16
    LCD Monitor only. 1. Port Setup a) Copy "UserPort.sys" file to "c:\WINNT\system32\drivers" folder b) Run Userport.exe 2. EDID Read & Write 1) Run WinEDID.exe c) Remove Click Exit button. Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 16 - LGE
  • LG L1933TR-SF | Service Manual - Page 17
    value manually.(Analog Only) i) MODULE : To select applied module. Video Signal Generator Control Line IBM Compatible PC 15 10 5 PARALLEL PORT Not used RS232C PARALLEL OFF ON 5V C F VGS A MONITOR B V-SYNC ST POWER Power inlet (required) 220 Power Select Switch (110V/220V) Power LED
  • LG L1933TR-SF | Service Manual - Page 18
    Opening Each Power Line Check 3.3V Line (Open Check) No Problem Is U201 Pin75 (3.3V) Voltage ? YES 1 Check U201 Pin 96 Pulse YES Check U201 NO Check 3.3V Line NO Check X-TAL Waveforms 1 U201-#96 Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes
  • LG L1933TR-SF | Service Manual - Page 19
    MODULE CHECK POWER BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK MICOM INV ON/OFF PORT. 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. 2. CHECK MICOM DIM-ADJ PORT LIPS Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 19 - LGE Internal
  • LG L1933TR-SF | Service Manual - Page 20
    AT SIGNAL PINS? AT MODE 12? YES TROUBLE IN CABLE OR LCD MODULE CHECK CONNECTION LINE FROM D-SUB TO U201 Waveforms 1 U201-#96, 97 2 U201-#27 H-SYNC 2 U201-#28 V-SYNC Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 20 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 21
    YES CHECK U201 PIN 27,28 SYNC PULSE ? YES TROUBLE IN U201 NO CHECK PC PC IS NOT GOING INTO DPM OFF MODE NO CHECK H/V SYNC LINE Waveforms 3 R442 H-Sync 3 R443 V-Sync Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 21 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 22
    , D202 Voltage YES CHECK 5V, 12V Line 5. POWER NO NO NO NO NO Trouble in Fuse (F101) Check BD101 Check U101 Pin7 : 9~10V Check D102 Trouble in Q101 Trouble in D201, D202 Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 22 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 23
    Check the waveform of U301 Pin11, 12, 19, 20 NO Check the waveform of U301 Pin11, 12, 19, 20 If waveform is no problem NO Check Q303~Q308 Or Trouble in U303, U304 Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 23 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 24
    WIRING DIAGRAM 6P 3P 6631T20010E-L1733TR 6631900125A-L1933TR 6631900011H 11P 6631T20023J 30P 6631900109A Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 24 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 25
    EXPLODED VIEW 150 160 180 130 140 170 120 010 020 190 030 110 080 060 050 070 040 100 090 Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 25 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 26
    ABJ32229471 Cabinet Assembly, L1953 . 19" SILVER L1933TR FOR BEST BUY 020 EAJ32188801 LCD,Module-TFT, LM170E03-TLB3 DRIVER 17.0INCH 1280X1024 300CD COLOR 72% 5/4 800 VS 1 5MS, 160/160, 4LAMP, 2CH-LVDS LG PHILIPS LCD . EAJ32189001 LCD,Module-TFT, LM190E08-TLB2 DRIVER 19.0INCH 1280X1024 300CD COLOR
  • LG L1933TR-SF | Service Manual - Page 27
    MANUAL. MAIN BOARD AND POWER BOARD PARTS ARE DIFFERENT. * NOTE : S SAFETY Mark AL ALTERNATIVE PARTS *S *AL LOC. NO. PART 06. DESCRIPTION / SPECIFICATION C1608C0G1H680JT 68pF 5% 50V ARDRQP TSUMO G Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 27 -
  • LG L1933TR-SF | Service Manual - Page 28
    *S *AL LOC. NO. PART NO. DATE: 2007. 02. 06. DESCRIPTION / SPECIFICATION U503 U503 U701 U702 U901 U902 U902 0ISG240860B 0IMMR00203A 0IMMR00014A 0IMMR00014A 0IPMGFA003G 0IPMGSG016A 0IPMG78403A M24C08-WMN6TP 8KBIT 1KX8BIT-L1733TR FM24C08 8KBIT 1KX8BIT 2.7VTO-L1933TR M24C02-RMN6TP 2KBIT 256X8BIT
  • LG L1933TR-SF | Service Manual - Page 29
    PART NO. POWER BOARD CAPACITORS DATE: 2007. 02. 06. DESCRIPTION / SPECIFICATION 2012 5.00% 240K OHM 1 / 10 W 2012 5.00% 24 OHM 2 W 5% SF 30K OHM 1/6 W 1.00% TA52 2.2K OHM 1/6 W 1.00% TA52 1.6K OHM 1/8 LG Electronics. Inc. All right reserved. Only for training and service purposes - 29 - LGE Internal
  • LG L1933TR-SF | Service Manual - Page 30
    *S *AL LOC. NO. PART NO. DATE: 2007. 02. 06. DESCRIPTION / SPECIFICATION R316 R317 R318 R319 R320 R321 R401 R402 R403 R404 DIP," TIN HDC 0.60H NON NON TIN HDC 0.60H NON NON Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 30 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 31
    SCHEMATIC DIAGRAM 1. SCALER Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 31 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 32
    2. POWER & WAFER Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 32 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 33
    3. INVERTER Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 33 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 34
    4. POWER Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 34 - LGE Internal Use Only
  • LG L1933TR-SF | Service Manual - Page 35
    P/NO : MFL43002807 Feb. 2007 Printed in Korea
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
COLOR MONITOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE
SAFETY PRECAUTIONS
IN THIS MANUAL.
CHASSIS NO. : LM57B
MODEL:
L1733TR (L1733TR-SFQ.A**MQP)
L1933TR (L1933TR-SFQ.A**MQP,A**RQP)
*To apply the
MSTAR Chip
.
(
) **Same model for Service
Internal Use Only