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Samsung GH15LS Service Manual
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Samsung GH15LS Service Manual

Tft-lcd monitor
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SERVICE
TFT-LCD MONITOR
GH15MS
All manuals and user guides at all-guides.com
TFT-LCD MONITOR
GH15LS
GH15ES
GH15MS
Manual
CONTENTS
10. Panel Description

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Summary of Contents for Samsung GH15LS

  • Page 1: Table Of Contents

    All manuals and user guides at all-guides.com TFT-LCD MONITOR GH15LS GH15ES GH15MS SERVICE Manual TFT-LCD MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Troubleshooting 5. Exploded View & Parts List GH15LS/GH15ES 6. Electrical Parts List 7. Block Diagram 8.

  • Page 2: Precautions

    Appliances), and Underwriters Laboratories (UL characteristics as the recommended replacement part Publication UL1410, 59.7). might create shock, fire and / or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate. GH15LS/GH15ES/GH15MS...
  • Page 3 Use only an anti-static solder removal device. Some brushing clothes together, or lifting your foot from solder removal devices not classified as “anti-static” a carpeted floor can generate enough static can generate electrical charges sufficient to damage electricity to damage an ESD. ESDs. GH15LS/GH15ES/GH15MS...

  • Page 4: Product Specifications

    • Frequency response: 80 Hz~20 kHz (at –3dB) • Headphone: Max 50mW output (3.5-pi jack) • Speaker: Internal semi Dome (16ohm x 2) •GH15LS/GH15ES/GH15MS complies with SWEDAC (MPR II) recommendations for reduced electromagnetic fields. •Designs and specifications are subject to change without prior notice.
  • Page 5 GND-G GND-G GND-G GND-B GND-B GND-B No Connection No Connection Not Used GND-Sync./Self Test GND-Sync./Self Test GND-Sync./Self Test DDC Data DDC Data DDC Data H-Sync. H/V-Sync. Not Used V-Sync. Not Used Not Used DDC Clock DDC Clock DDC Clock GH15LS/GH15ES/GH15MS...
  • Page 6 B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch GH15LS/GH15ES/GH15MS...
  • Page 7 B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch GH15LS/GH15ES/GH15MS...

  • Page 8: Disassembly & Reassembly

    All manuals and user guides at all-guides.com 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the GH15LS/GH15ES/GH15MS monitor. WARNING: This monitor contains electrostatically sensitive devices. Use with caution when handling these components.
  • Page 9 All manuals and user guides at all-guides.com 3 Disassembly and Reassembly 3-2 Replacement Order of Lamp Assemblies (GH15LS/GH15ES/GH15MS : Samsung Panel) 1. After confirm there is nothing on the disk Turn the LCD module over and put it on a flat desk set to the ground.
  • Page 10 LCD module : opposite process 2 and 3 Replacement of lamp unit should be done at the power off state and recommanded clean bench condition. 3-3 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures. GH15LS/GH15ES/GH15MS...
  • Page 11 All manuals and user guides at all-guides.com 3 Disassembly and Reassembly Memo GH15LS/GH15ES/GH15MS...

  • Page 12: Troubleshooting

    • 12V does not develop: Audio PCB, SMPS PCB 4. If you push and hold the “EXIT” button for more than 5 seconds, the monitor automatically turns back to the factory preset. 4-1 No Power (GH15LS/GH15ES/GH15MS) Does proper DC 12 V appear at FT901, FT902 Check SMPS or CN101.
  • Page 13 Pin 44 of IC105? Do the pulse appeaer at Pin 43 of IC105? Does the waveforms Replace IC251 or appeaer at Pin 3 check its related circuit. and 16 of CN201? Replace LCD Panel GH15LS/GH15ES/GH15MS...
  • Page 14 All manuals and user guides at all-guides.com 4 Troubleshooting WAVEFORMS GH15LS/GH15ES/GH15MS...
  • Page 15 Pin 46,47 150 and 43 of IC105? and 55, 56 and 63,64 of IC105? Replace IC105 or check its Replace IC105. related circuit. Replace IC251 and IC252. Replace IC105 or check its related circuit. Replace CN251. WAVEFORMS GH15LS/GH15ES/GH15MS...
  • Page 16 Pin 5, 6, 7, 8 of Q403? Does the sound input signal Check CN401 appear at Pin 4 and 9 of IC401? and related circuit. Does the sound signal appear at Check IC401 and related circuit. Pin 14 and 17 of IC401? Check CN402 outputs. GH15LS/GH15ES/GH15MS...
  • Page 17 Check Q801 and related circuits. work? Does the External Microphone Check the CN803 jack. work? 4-7 Headphones Don’t Work Check CN802 on the Audio PCB Can you hear any sound from and related circuit D805, D806, the Headphones? R811, and R812. GH15LS/GH15ES/GH15MS...

  • Page 18: Exploded View & Parts List

    All manuals and user guides at all-guides.com 5 Exploded View and Parts List 5-1 GH15LS/GH15ES GH15LS/GH15ES/GH15MS...
  • Page 19 All manuals and user guides at all-guides.com 5 Exploded View & Parts List 5-2 GH15MS GH15LS/GH15ES/GH15MS...

  • Page 20: Electrical Parts List

    6 Electrical Parts List 6-1 Main PCB Parts Loc. No. Code No. Description Specification Remarks BN44-00053A ADAPTOR DPA30L,150S,100-240VAC,47 - 63 HZ,12VDC/3.3VDC,2A/2A,-,30.6,AC-DC,-10~40C,-,- BN72-00209A SUPPORT-POWER GH15LS,ABS+PC,GR37,-,5V,-,-,- BN75-00176A UNIT-SHIELD/DSUB GH15LS,-,SPTE T0.5,-,-,-,- BN70-00204A SHIELD-D/SUB -,SPTE,-,T0.5,-,-,-,-,- BN71-00024A EARTH-PLATE GH17LS,SUS,T0.15,-,-,- CN101 3711-004853 CONNECTOR-HEADER BOX,7P,1R,2MM,ANGLE,SN,WHT CN102 3701-001219 CONNECTOR-DSUB 15P,3R,FEMALE,ANGLE,AUF...
  • Page 21 IC-LCD CONTROLLER GMZAN1,QFP,160P,1102MIL,SINGLE,-,TR,PLASTIC,3.47V,0TO+70C,1.8W,-,LCD CONTROLLER IC108 0803-000122 IC-TTL 74F125,BUFFER,SOP,14P,150MIL,Q IC251 1205-001740 IC-TRANSMITTER DS90C385,TSSOP,56P,240MIL,PLASTIC,4V,1.63W,-10 TO +70C,ST,FPD LINK-85MHZ(LVDS) IC371 1103-001023 IC-EEPROM 524C80D81,1028x8Bit,SOP,8P,150MIL,10mS,5V,10%,PLASTIC,0to+70C,110uA,CMOS,TP IC372 1103-001164 IC-EEPROM 24LC21A,128X8BIT,SOP,8P,150MIL,-,5V,10%,PLASTIC,0 TO +70C,100UA,CMOS,TP MP1.0 BN41-00088A PCB MAIN GH15L/M,FR-4,4,-,1.6,120*110*1.6,-,-,-,- Q102 0501-002080 TR-SMALL SIGNAL 2SC2412K,NPN,200mW,SC-59,TP,120-270 Q103 0501-002080 TR-SMALL SIGNAL 2SC2412K,NPN,200mW,SC-59,TP,120-270 GH15LS/GH15ES/GH15MS...
  • Page 22 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608 R337 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608 R338 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608 R339 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 R340 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 R341 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 R343 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 R344 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 R345 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 R346 2007-000084 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1608 GH15LS/GH15ES/GH15MS...
  • Page 23 2503-001018 C-NETWORK 15PFX4,10%,50V,- RC206 2503-001018 C-NETWORK 15PFX4,10%,50V,- RC207 2503-001018 C-NETWORK 15PFX4,10%,50V,- X100 2801-003755 CRYSTAL-SMD 20MHZ,30PPM,28-AAN,20PF,50OHM,TP X311 2801-003773 CRYSTAL-SMD 12MHZ,30PPM,28-AAN,20PF,50OHM,TP ZD181 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 ZD182 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 ZD183 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 ZD184 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 ZD185 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 GH15LS/GH15ES/GH15MS...
  • Page 24 ASSY MANUAL GH15MS,-,-,- GH5MS BN95-00254A ASSY MANUAL GH15ES,-,-,- GH15ES BN07-00026A LTM150XH-L01,CZB,8BIT,331.6*254.76*12.5,16.19M,-,0.297*0.297,-,-,AMLCD/1 LVDS,- GH15LS/ES/MS BN44-00056A INVERTER GOGH,SIC1542,48KHZ,12VDC,1.5MARMS,5.6MARMS,48KHZ,37*140*16.0,4LAMP,40~56KV,-,SIC GH15LS/ES/MS BN44-00053A ADAPTOR DPA30L,150S,100-240VAC,47 - 63 HZ,12VDC/3.3VDC,2A/2A,-,30.6,AC-DC,-10~40C,-,- GH15LS/ES/MS M/PCB+PAN BN39-00036A CBF-HARNESS 20P,150MM,BLU/GRY/WHT,UL1571,AWG30,DF14-20S-1.25C GH15LS/ES/MS IN/PCB+M/PCB BN39-00161A CBF HARNESS GH15LS,UL/CSA,UL1061#28,12P/12P,160MM,WHT,AWG28,51021-1200,51021-1200,-,-,1.25MM GH15LS/ES/MS BN39-00114A CBF SIGNAL NL15MO,15P/15P,2990,1830MM,UL2990,IVORY,D-SUB/MALE,-,-,- GH15LS/ES/MS BN59-00167A...
  • Page 25 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608 R403 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608 R404 2007-000074 R-CHIP 100ohm,5%,1/16W,DA,TP,1608 R405 2007-000078 R-CHIP 1Kohm,5%,1/16W,DA,TP,1608 R406 2007-000090 R-CHIP 10Kohm,5%,1/16W,DA,TP,1608 R412 2007-000102 R-CHIP 100Kohm,5%,1/16W,DA,TP,1608 R413 2007-000102 R-CHIP 100Kohm,5%,1/16W,DA,TP,1608 R414 2007-000090 R-CHIP 10Kohm,5%,1/16W,DA,TP,1608 ZD401 0403-001052 DIODE-ZENER RD8.2MB,8.2V,7.7-8.64V,200mW,S ZD402 0403-001052 DIODE-ZENER RD8.2MB,8.2V,7.7-8.64V,200mW,S GH15LS/GH15ES/GH15MS...

  • Page 26: Block Diagram

    All manuals and user guides at all-guides.com 7 Block Diagram GH15LS/GH15ES/GH15MS...
  • Page 27 All manuals and user guides at all-guides.com 7 Block Diagrams Memo GH15LS/GH15ES/GH15MS...

  • Page 28: Wiring Diagram

    All manuals and user guides at all-guides.com 8 Wiring Diagram GH15LS/GH15ES/GH15MS...
  • Page 29 All manuals and user guides at all-guides.com 8 Wiring Diagram Memo GH15LS/GH15ES/GH15MS...

  • Page 30: Schematic Diagrams

    All manuals and user guides at all-guides.com 9 Schematic Diagrams 9-1 Main Part Schematic diagram (GH15LS/GH15ES/GH15MS) +3.3V_S For Japanese OSD PC_RED_IN DHCLK C140 C141 TP78 FT110 100uF 100nF PC_GREEN_IN BLM41P600S R205 1/16W TP918 C180 C181 PC_BLUE_IN 100nF 100nF TP378 IC106...
  • Page 31 All manuals and user guides at all-guides.com 9 Schematic Diagrams GH15LS/GH15ES/GH15MS...
  • Page 32 VAROUT_L AGND C403 C404 100nF 100nF 100pF 100pF C405 100uF ZD401 ZD402 AGND AGND AGND AGND AGND AGND AGND AGND R405 1/16W AUDIO_VOLUME C406 10uF AGND AUDIO_MUTE AUDIO_STANDBY R978 C416 6.8K 47uF R406 R407 1/16W AGND AGND AGND AGND GH15LS/GH15ES/GH15MS...
  • Page 33 All manuals and user guides at all-guides.com 9 Schematic Diagrams Memo GH15LS/GH15ES/GH15MS...
  • Page 34 All manuals and user guides at all-guides.com Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea. Printed in Korea P/N : BN68-00225A-00 http://www.samsungmonitor.com (SyncMaster Worldwide) http://www.samsung-monitor.com (SyncMaster USA) http://www.sec.co.kr/monitor (Korea)

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