Samsung 172N Service Manual
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Samsung 172N Service Manual

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SERVICE
TFT-LCD MONITOR
NB17A*
NB19A*
TFT-LCD MONITOR
Chassis
Model
NB17A*
172N
NB19A*
192N
Manual
6. Exploded View & Parts List
10. PCB Layout
12. Panel Description
CONTENTS

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Summary of Contents for Samsung 172N

  • Page 1: Table Of Contents

    TFT-LCD MONITOR Chassis Model NB17A* 172N NB19A* 192N SERVICE Manual TFT-LCD MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignments & Adjustments 5. Troubleshooting 6. Exploded View & Parts List 7. Electrical Parts List NB17A* 8. Block Diagram 9.

  • Page 2: Precautions

    1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings For continued safety, do not attempt to modify the (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) Disconnect the AC power and DC power jack before servicing.

  • Page 3: Servicing Precautions

    1 Precautions 1-2 Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.

  • Page 4: Product Specifications

    2 Product Specifications 2-1 Specifications Description Item NB17A* NB19A* LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive, TFT-LCD panel, RGB vertical stripe, normally black transmissive, 17-Inch viewable, 0.264 (H) x 0.264 (V) mm pixel pitch 19-Inch viewable, 0.298 (H) x 0.298(V) mm pixel pitch Scanning Frequency Horizontal : 31 kHz ~ 81 kHz (Automatic) Horizontal : 31 kHz ~ 81 kHz (Automatic)

  • Page 5: Pin Assignments

    2 Product Specifications 2-2 Pin Assignments Sync 15-Pin D-Sub Signal Cable Connector Type Separate Composite Sync-on-green Pin No. Green Green Green + H/V Sync. Blue Blue Blue DDC Return (GND) DDC Return (GND) DDC Return (GND) GND-R GND-R GND-R GND-G GND-G GND-G GND-B...

  • Page 6: Timing Chart

    2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 2-1 Timing Chart Mode VESA VGA2/ VGA3/ 1280/60 Hz 1280/75 Hz 640/75 Hz 800/60 Hz 800/75 Hz 1024/60 Hz...
  • Page 7 2 Product Specifications Memo NB17A*/NB19A*...

  • Page 8: Disassembly & Reassembly

    3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the NB17A*/NB19A* monitor. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions : 1. Disconnect the monitor from the power source before disassembly. 2.
  • Page 9 3 Disassembly and Reassembly 5. Disconnect LVDS cable and remove 4 screws from the shield. (the coner of the shield 4 screws) 6. Lift up shield from the panel. 3-2 Replacement Order of Lamp Assemblies 1. Remove 2 screws from LCD module. (top &...
  • Page 10 3 Disassembly and Reassembly 3. Take out the lamp unit from the LCD module. 4. This picture shows the complete lamp ass’y removal from LCD module. Replacement of lamp unit should be done at the power off state and with a recommended clean bench condition.
  • Page 11 3 Disassembly and Reassembly Memo NB17A*/NB19A*...

  • Page 12: Alignments & Adjustments

    4 Alignments and Adjustments This section of the service manual explains how to use the RS232 JIG. This function is needed for AD board change and program memory (IC110) change. 4-1 Required Equipment The following equipment is necessary for adjusting the monitor: •...

  • Page 13: Service Function Spec

    4 Alignments and Adjustments 4-6 Service Function Spec. 4-6-1 How to Display Service Function OSD 1. The value for brightness and contrast should be changed to zero. 2. Within 5 seconds, press the exit key. 3. Service function OSD will be displayed. If you want to disable the service function OSD, you will have to power off.
  • Page 14 4 Alignments and Adjustments 4-6-3 How to Control Service Function OSD • After change the panel or lamp, you must reset service function OSD. • The case of panel change After changeing the panel, press the menu key within 5 seconds,. Then, panel Ch.
  • Page 15 4 Alignments and Adjustments 4-6-5 Pixel shift and language selection change * Note : Use the '-' key to vary values for new pixel shift and country menu. 1. Pixel shift : on - When a same picture is displayed with no change for an extended period of time, this function prevents the display panel from image sticking.
  • Page 16 4 Alignments and Adjustments Figure 8-2. Figure 8-3. Figure 9. Figure 9-1. NB17A*/NB19A*...
  • Page 17 4 Alignments and Adjustments Memo NB17A*/NB19A*...

  • Page 18: Troubleshooting

    5 Troubleshooting Notes: 1. Before troubleshooting, setup the PC’s display as below. • Resolution: 1280 x 1024 • H-frequency: 64 kHz • V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. Check the following circuits. •...
  • Page 19 5 Troubleshooting 5-2 No Video Check signal cable connection and power. Replace or Do X1 and X2 oscillate properly? check related circuit. Is there R, G, B input at BD9, BD10 and BD11? Check input part. Check IC8 and related circuit. Does sync appear at Pin 8 and 10 of IC8? Are sync and data output Check the power related to...
  • Page 20 5 Troubleshooting WAVEFORMS NB17A*/NB19A*...
  • Page 21 5 Troubleshooting Memo NB17A*/NB19A*...

  • Page 22: Electrical Parts List

    7 Electrical Parts List You can search for updated part codes through CMS web site. URL : http://ecms. samsungelectronics. com/ 7-1-1 NB17A* Main PCB Parts Loc. No. Code No. Description Specification Remarks BN94-00476K ASSY PCB MAIN EJ ET NB17ASPS/EDC,NETHERLANDS CIS1 0202-001044 SOLDER-WIRE.
  • Page 23 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2402-000179 C-AL,SMD 47uF,20%,16V,GP,TP,6.6x6.6x5.4 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP...
  • Page 24 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks 2402-001158 C-AL,SMD 1UF,20%,50V,WT,TP,4X5.2MM CIS5 0202-001162 SOLDER-CREAM RMA-20-21L,S63,-,SN63/PB36.6/AG0.4,FLUX9.5% 3711-004070 CONNECTOR-HEADER BOX,30P,1R,1.25mm,SMD-A,SN 3708-000461 CONNECTOR-FPC/FFC/PIC 8P,1MM,SMD-A,AUF 0401-001056 DIODE-SWITCHING MMBD4148SE,75V,200MA,SOT-23,TP 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 0401-001056 DIODE-SWITCHING MMBD4148SE,75V,200MA,SOT-23,TP 0401-001056 DIODE-SWITCHING MMBD4148SE,75V,200MA,SOT-23,TP 3301-001145 CORE-FERRITE BEAD AB,4.5x1.6x1.6mm,-,- FT11...
  • Page 25 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R201 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R202 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R203 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R204 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R205 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R206 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R207 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R208 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608...
  • Page 26 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R260 2007-000070 R-CHIP 0ohm,5%,1/10W,TP,1608 R261 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R262 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R263 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R264 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R265 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R266 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R267 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608...
  • Page 27 7 Electrical Parts List 7-1-2 NB17A* Others Loc. No. Code No. Description Specification Remarks BN90-00408E ASSY STAND GH17BSPS/EDC,EDC,ABS HB,BK07 BN96-00094C ASSY STAND P-MULTI-MEDIA GH17BS,ABS HB ,BK07 6005-001005 SCREW-WOOD HH,+,M4.0,L19,NI PLT,SWRCH18A BN60-00002A SCREW-MACHINE -,SWCH18A,-,L10,BH,+,-,M4,NI C101 BN81-00050A A/S-CAP/ELECT GH17ASPS/XAZ,5CF160010,SEDA C102 BN81-00050A A/S-CAP/ELECT GH17ASPS/XAZ,5CF160010,SEDA C103 BN81-00057A...
  • Page 28 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks BN81-00066A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06075,SEDA BN81-00067A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06125,SEDA BN81-00065A A/S-JUMP WIRE GH17ASPS/XAZ,5JW0605,SEDA BN81-00066A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06075,SEDA BN81-00066A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06075,SEDA BN81-00066A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06075,SEDA R101 BN81-00071A A/S-RESISTER CARBON GH17ASPS/XAZ,5RF161.5KM,SEDA R102 BN81-00071A A/S-RESISTER CARBON...
  • Page 29 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks VR102 BN81-00077A A/S-S/W VOLUME GH17ASPS/XAZ,5VLJPA15F,SEDA BN96-00275A ASSY MISC P-VESA-HINGE M/M STAND,CHINA,CKD BN90-00432B ASSY COVER REAR GH17ASMB/XSJ,SEJ,ABS HB BN90-00332B ASSY REAR-COVER BN63-00301A COVER-REAR GH17PS,ABS HB ,- BN90-00526A ASSY COVER FRONT NB17AS BN96-00586A ASSY COVER P-FRONT...
  • Page 30 6801-001073 CARD-REGISTRATION RUS,XEV,RUS,MOJO100,-,W220,L318,2,- ACCESSORY 6902-000110 BAG PE LDPE,T0.05,L356,W240,TRP,28,2,PE MARK ACCESSORY BH39-10339H CBF POWER CORD DET,H05VV-F,250V/10,16A,BLK,25 ACCESSORY BH68-00374A CARD WARRANTY-01 ASC List,Samsung,ART100G,Russian,EDC,295,210 ACCESSORY BH68-00489A MANUAL-02 RUSSIAN W/CARD,SER,RUSSIAN,RUSSIA,MOJO100G ACCESSORY BH68-70438A CARD-BLOC WARRANTY-09 TFT LCD,BASIC,EU,MOJO,100G,W21 ACCESSORY BH68-70448A CARD-01 TFT LCD,SRC,RUSSIA,S/W,120,W210*L120,INSTALL CARD BN39-00061A CBF SIGNAL-STEREO...
  • Page 31 7 Electrical Parts List 7-2-1 NB19A* Main PCB Parts Loc. No. Code No. Description Specification Remarks BN94-00476M ASSY PCB MAIN RK RM NB19ASPS/EDC,NETHERLANDS CIS1 0202-001044 SOLDER-WIRE. S63S-W3.0,S63S,D3,63Sn/37Pb,- CIS10 0204-001095 THINNER #4520,-,-,- CIS2 0204-001677 FLUX DF-201TVS,MIX,0.820,FLUX 13%,G CIS3 0202-001222 SOLDER-WIRE FLUX RS-107,RS60-1.2AA,D1.2,SN60/PB40,- CIS30 BN71-00024A...
  • Page 32 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks 2402-000179 C-AL,SMD 47uF,20%,16V,GP,TP,6.6x6.6x5.4 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608 2401-002463 C-AL...
  • Page 33 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks CIS5 0202-001162 SOLDER-CREAM RMA-20-21L,S63,-,SN63/PB36.6/AG0.4,FLUX9.5% 3711-004070 CONNECTOR-HEADER BOX,30P,1R,1.25mm,SMD-A,SN 3708-000461 CONNECTOR-FPC/FFC/PIC 8P,1MM,SMD-A,AUF 0401-001056 DIODE-SWITCHING MMBD4148SE,75V,200MA,SOT-23,TP 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 0403-000579 DIODE-ZENER BZX84C5V1,5.1V,5%,200mW,SOT-23 0401-001056 DIODE-SWITCHING MMBD4148SE,75V,200MA,SOT-23,TP 0401-001056 DIODE-SWITCHING MMBD4148SE,75V,200MA,SOT-23,TP 3301-001145 CORE-FERRITE BEAD AB,4.5x1.6x1.6mm,-,- FT11 2901-001114 FILTER-EMI SMD...
  • Page 34 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R201 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R202 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R203 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R204 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R205 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R206 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R207 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608 R208 2007-000074 R-CHIP 100ohm,5%,1/10W,TP,1608...
  • Page 35 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks R259 2007-000072 R-CHIP 47ohm,5%,1/10W,TP,1608 R260 2007-000070 R-CHIP 0ohm,5%,1/10W,TP,1608 R261 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R262 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R263 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R264 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R265 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R266 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608...
  • Page 36 7 Electrical Parts List 7-2-2 NB19A* Others Loc. No. Code No. Description Specification Remarks BN90-00347A ASSY COVER REAR GH19AS,GH19AS-SXM8/0001 BN63-00306C COVER-REAR GH19AS,ABS HB BL21,S33-595-A1114S BN90-00408E ASSY STAND GH17BSPS/EDC,EDC,ABS HB,BK07 BN96-00094C ASSY STAND P-MULTI-MEDIA GH17BS,ABS HB ,BK07 6005-001005 SCREW-WOOD HH,+,M4.0,L19,NI PLT,SWRCH18A BN60-00002A SCREW-MACHINE -,SWCH18A,-,L10,BH,+,-,M4,NI...
  • Page 37 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks J102 BN81-00078A A/S-WAFER GH17ASPS/XAZ,5WA02H13,SEDA J103 BN81-00079A A/S-WAFER GH17ASPS/XAZ,5WA03H08,SEDA JK101 BN81-00063A A/S-JACK PHONE GH17ASPS/XAZ,5JCHS03495,SEDA JK102 BN81-00064A A/S-JACK PHONE GH17ASPS/XAZ,5JCS0349SW,SEDA BN81-00066A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06075,SEDA BN81-00067A A/S-JUMP WIRE GH17ASPS/XAZ,5JW06125,SEDA BN81-00065A A/S-JUMP WIRE GH17ASPS/XAZ,5JW0605,SEDA BN81-00066A A/S-JUMP WIRE...
  • Page 38 7 Electrical Parts List Loc. No. Code No. Description Specification Remarks BN81-00101A A/S-PCB GH17ASPS/XAZ,SEDA U101 BN81-00062A A/S-IC GH17ASPS/XAZ,5ICTEA2025,SEDA U102 BN81-00061A A/S-IC GH17ASPS/XAZ,5IC278R12,SEDA VR101 BN81-00076A A/S-VOLUME GH17ASPS/XAZ,5VL0B050V,SEDA VR102 BN81-00076A A/S-VOLUME GH17ASPS/XAZ,5VL0B050V,SEDA VR102 BN81-00077A A/S-S/W VOLUME GH17ASPS/XAZ,5VLJPA15F,SEDA BN96-00275A ASSY MISC P-VESA-HINGE M/M STAND,CHINA,CKD BN90-00549A ASSY COVER FRONT NB19AS...
  • Page 39 6801-001073 CARD-REGISTRATION RUS,XEV,RUS,MOJO100,-,W220,L318,2,- ACCESSORY 6902-000110 BAG PE LDPE,T0.05,L356,W240,TRP,28,2,PE MARK ACCESSORY BH39-10339H CBF POWER CORD DET,H05VV-F,250V/10,16A,BLK,25 ACCESSORY BH68-00374A CARD WARRANTY-01 ASC List,Samsung,ART100G,Russian,EDC,295,210 ACCESSORY BH68-00489A MANUAL-02 RUSSIAN W/CARD,SER,RUSSIAN,RUSSIA,MOJO100G ACCESSORY BH68-70438A CARD-BLOC WARRANTY-09 TFT LCD,BASIC,EU,MOJO,100G,W21 ACCESSORY BH68-70448A CARD-01 TFT LCD,SRC,RUSSIA,S/W,120,W210*L120,INSTALL CARD BN39-00061A CBF SIGNAL-STEREO...
  • Page 40 6 Exploded View and Parts List You can search for updated part codes through CMS web site. URL : http://ecms. samsungelectronics. com/ 6-1 NB17A* NB17A*/NB19A*...
  • Page 41 6 Exploded View & Parts List 6-2 NB19A* NB17A*/NB19A*...

  • Page 42: Block Diagram

    8 Block Diagram This Document can not be used without Samsung’s authorization. NB17A*/NB19A*...
  • Page 43 8 Block Diagrams Memo NB17A*/NB19A*...

  • Page 44: Wiring Diagram

    9 Wiring Diagram IP BOARD BL_EH BL_EH ADJ_BL ADJ_BL CN101 SW_REG_ENB SW_REG_ENB +13V_IN +13V_IN +13V_IN +13V_IN LED_G LED_G LED_R LED_R KEY2 KEY2 KEY1 KEY1 FUNCTION NB17A*/NB19A*...
  • Page 45 9 Wiring Diagram Memo NB17A*/NB19A*...

  • Page 46: Schematic Diagrams

    11 Schematic Diagrams This Document can not be used without Samsung’s authorization. +5V_M +5V_PANEL FT12 1.5uH BD12 1.5uH slcon30p FT13 +13V_IN 1.5uH +5V_M R291 R292 R293 R303 100nF 10000nF 470nF 10nF 100uF 1/16W 1/16W 1/16W slcon9p TP319 R203 SW_REG_EN R219...
  • Page 47 11 Schematic Diagrams 11-2 NB17A*/NB19A*...
  • Page 48 Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea, 442-742 Printed in Korea This Service Manual is a property of Samsung P/N : BN82-00096G-00 Electronics Co., Ltd. http : //www.samsungmonitor.com (SyncMaster Worldwide) Any unauthorized use of Manual can be punished http : //www.samsung-monitor.com (SyncMaster USA)

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