Samsung BX2250 Service Manual
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Samsung BX2250 Service Manual

Samsung lcd monitor service manual
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See also: User Manual , Manual Del Usuario
SERVICE
TFT-LCD Monitor
BX2250 / BX2250N / BX2350 /
BX2450 / BX2450N / BX2450L
Refer to the service manual in the GSPN (see the rear cover) for the more information.
LCD-Monitor
Chassis
: LB522HS / LB522YS /
LB523HS / LB524LS /
LB524YS / LB524LS
Model
: BX2250 / BX2250N /
BX2350 / BX2450 /
BX2450N / BX2450L
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassemble
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
Contens

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Summary of Contents for Samsung BX2250

  • Page 1 3. Disassembly and Reassemble 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram BX2250 / BX2250N / BX2350 / BX2450 / BX2450N / BX2450L Refer to the service manual in the GSPN (see the rear cover) for the more information.

  • Page 2: Table Of Contents

    Contents 1. Precautions ......................1-1 1-1. Safety Precautions ......................1-1 1-2. Servicing Precautions ..................... 1-2 1-3. Static Electricity Precautions ..................1-2 1-4. Installation Precautions ....................1-3 2. Product specifications .................... 2-1 2-1. Feature & Specifications ....................2-1 2-2. Spec Comparison to the Old Models ................2-3 2-3.
  • Page 3 Mideast & Africa http://mea.samsungportal.com © 2010 Samsung Electronics Co.,Ltd. This Service Manual is a property of Samsung Electronics Co.,Ltd. All rights reserved. Any unauthorized use of Manual can be punished under applicable Printed in Korea International and/or domestic law.

  • Page 4: Disassembly And Assembly

    3. Disassembly and Assembly 3. Disassembly and Assembly This section describes the disassembly and reassembly sequences for this monitor. Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them. 3-1. Disassembly Caution: 1. Turn the monitor off before beginning the disassembly process. 2.
  • Page 5 3. Disassembly and Assembly Description Photo Screws 3. Remove the LVDS, LAMP wire, FUNCTION cable, and then remove the SHIELD-COVER. 4. Remove the LCD panel. 5. Remove the four (2) screws shown in the figure. 6. Remove the fiive (3) screws shown in the figure and remove the Bracket support.
  • Page 6 5. Exploded View & Part List 5. Exploded View & Part List 5-1. LS22B5HVFH/XF - Exploded View (BX2250) M0215 F001A R001A M0014 S001A CS02A 5-1-1. Parts List Location No. Code No. Description & Specification Q’ty SA/SNA Remark CS02A BN96-14905C ASSY SHIELD P-COVER;50Series 23.6",SECC,...
  • Page 7 5. Exploded View & Part List 5-2. LS22B5HVFH/XF - Parts List (BX2250) Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ASSY COVER FRONT;BX2250,BLACK,High BN90-02842A Gloss F001A BN96-14906A ASSY COVER P-FRONT;50Series 21.5",ABS+PM ...3...
  • Page 8 ...3 JA330 3722-002758 JACK-PHONE;1P,BLK,STRAIGHT ...3 3722-002922 JACK-DC POWER;3P,6.7mm,SnPb,Black ASSY HDCP;BN46-00018A,BR20/21BS_ ...3 BN97-00707A CS,MSTAR KEY CODE-CERTIFICATE;(HDCP KEY) ..4 BN46-00018A PPM42M5S, ...3 BN97-04471S ASSY SMD;BX2250,BN94-03654* SOLDER-CREAM;LST309- ..4 0202-001477 0.462 M,D20~45um,96.5Sn/3A DIODE- ..4 0401-000008 SWITCHING;DAN217,80V,100MA,SOT-23, DIODE-SWITCHING;MMBD4148SE,100V,200m ..4 DS01A 0401-001056 A,SO ..4 DR01A 0402-001614 DIODE-RECTIFIER;S1G,400V,1A,DO-214AC,TP...
  • Page 9 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..4 MROP1 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 ..4 ARR2 2007-000102 R-CHIP;100Kohm,5%,1/10W,TP,1608 ..4 DR10 2007-000113 R-CHIP;33ohm,5%,1/10W,TP,1608 ..4 KAR11 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 ..4 MR604 2007-000137 R-CHIP;2Kohm,5%,1/16W,TP,1005 ..4 R105 2007-000138 R-CHIP;100ohm,5%,1/16W,TP,1005 ..4 AR49...
  • Page 10 CIS1 BN74-00021A TAPE-FILAMENT;Filament tape,clear,#8915, FL06 BN96-13895D ASSY CABLE P-FFC;Cobalt,FFC CABLE,JPC-S0 BN92-05486K ASSY LABEL;BX50 CCM1 BN68-01570A LABEL RATING;ALL,SS,PE,T0.05,90,45,Dark BN92-06358G ASSY BOX;BX2250,LS22B5HVFH/XF T0077 BH68-00329D LABEL BAR CODE-02;NO CE,NO WT`Y,MPRII,LA LABEL BOX-00;ALL MODEL,MOJO BH68-00651R 90G,90,95,WH LABEL-STICKER;MODEL BN68-02882T 15,CHINA,MOJO,80G,54 BN69-05258A BOX-01,SET;Series 50 21.5",PAPER,SW,A1,Y ASSY MISC P-01,HANDLE PACKING;ALL...
  • Page 11 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark EC29 BN39-00244H CBF SIGNAL-D-SUB TO D-SUB;D-sub cable,15 M0158 BN44-00139C DC VSS(A);AD-3612S,WHITE,110/230V,50/60H ...3 BN81-00713A A/S-DIODE-RECTIFIER;0402-000602,-,-,-,-, ...3 BN81-00944A A/S-FUSE-AXIAL LEAD;3601-001301,-,-,-,-, ...3 BN81-00951A A/S-WIRE-NO SHEATH CU;3811-000545,-,-,-, ...3 BN81-00955A A/S-EYELET;6042-001007,-,-,-,-,-,-...
  • Page 12 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 BN81-05456A A/S-DIODE-RECTIFIER;0402-001741 ...3 BN81-05458A A/S-DIODE-SCHOTTKY;0404-001539 ...3 BN81-05460A A/S-DIODE-TVS;0406-001396 ...3 BN81-05463A A/S-DIODE-ZENER;0403-001796 ...3 BN81-05465A A/S-IC-POSI.ADJUST REG.;1203-005361 ...3 BN81-05467A A/S-IC-PWM CONTROLLER;1203-006085 ...3 BN81-05468A A/S-PACKING-VINYL BAG;ML69-00382F ...3 BN81-05469A A/S-PAD-CROSS (A);ML69-00400T...
  • Page 13 ...3 AA60-00189A SPACER-FELT;35/50 LCD-MONITOR,felt,L30,b ACCE1 BN96-14911F ASSY ACCESSORY;LS22B5HVFH/XF CBF-POWER CORD;DT,CHINA,LSG- ...3 T0268 3903-000381 21,250/250V, ...3 T0524 6902-000110 BAG PE;LDPE,T0.05,W250,L400,TRP,28,2,9.2 LABEL-PASSING;SAMSUNG ALL,ART ...3 T0527 AA68-00764A PAPER,CLR, ...3 M9889 BN63-02368B CLOTH-CLEAN;cloth,120,160,sea blue,ToC ...3 T0527 BN68-00513A LABEL-E,PASS;ALL MODEL,YUPO(110G),50X15, MANUAL FLYER-WARRANTY CARD;Chinese,Art ...3 BN68-01789A ...3...

  • Page 14: Precautions

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

  • Page 15: 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 16: Installation Precautions

    1. Precautions 1-4. Installation Precautions For safety reasons, more than two people are required for carrying the product. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.
  • Page 17 1. Precautions Memo...

  • Page 18: Product Specifications

    2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model BX2250 / BX2250N / BX2350 / BX2450 / BX2450N / BX2450L Feature Panel Specifications: 250 cd/m2, 2 ms, CR MEGA:1, 170/160 (CR>10) ሪ DPMS : <0.3W ሪ Off-Timer function for reducing standby power usages ሪ...
  • Page 19 2. Product specifications Specifications Item Description Model BX2450 BX2450N BX2450L LCD Panel TFT-LCD panel, RGB vertical stripe, normally white transmissive, 23.6” Wide viewable, 24” Wide viewable, 0.27675(H) x 0.27675(V) 0.2715(H) x 0.2715(V) Scanning Frequency Horizontal : 30kHz~81kHz Vertical: 56 Hz ~ 75 Hz Display Colors 16.7 Million colors Maximum resolution...

  • Page 20: Spec Comparison To The Old Models

    2. Product specifications 2-2. Spec Comparison to the Old Models 50series Model (BX2250 / BX2250N / BX2350 / White (PX2370) BX2450 / BX2450N / BX2450L) Design Resolution 1920x1080 1920x1080 Input Analog / HDMI with HDCP Digital with HDCP/HDMI with HDCP...

  • Page 21: Accessories

    Code. No Remark Quick Setup Guide BN68-02964A Product Warranty BH68-00261F (Not available in all locations) User Manual BN59-01093A D-Sub Cable BN39-00244H HDMI to DVI Cable BN39-01353A Samsung Electronics Service center Power Cord 3903-000192 DC-Adapter BN44-00139C Cleaning Cloth BN63-02368B Stand BN96-14867A...

  • Page 22: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. • Resolution: 1920x1080 • H-frequency: 67.5 kHz • V-frequency: 60 Hz If the screen is blank, check whether the power cord is connected correctly. The circuits to check: •...

  • Page 23: When The Power Does Not Turn On

    4. Troubleshooting 4-2. When the Power Does Not Turn On - When turning on the Power button after connecting the power cable, the LED at the front of the Symptom monitor does not operate. - When turning on the Power button after connecting the power cable, the LED at the front of the monitor does not operate.
  • Page 24 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on...

  • Page 25: When The Screen Is Blank (Analog)

    4. Troubleshooting 4-3. When the screen is blank (Analog) Symptom - Though the LED power turns on, the screen is blank when connecting the VGA cable. - Even though the LED power turns on, the screen is blank when connecting the VGA cable. - Check the D-sub cable connections. Major checkpoints - Check whether the LVDS cable is connected correctly to the panel.

  • Page 26: When A Blank Screen Is Displayed (Digital)

    4. Troubleshooting 4-3-1. When a blank screen is displayed (Analog)
  • Page 27 4. Troubleshooting 4-3-2. Waveforms when no screen is displayed (Analog) ① ③ ④...
  • Page 28 4. Troubleshooting 4-4. When a blank screen is displayed (HDMI) Symptom - Even though the LED power turns on, the screen is blank when connecting the HDMI cable. - Even though the LED power turns on, the screen is blank when connecting the HDMI cable. - Check the HDMI cable connections. Major checkpoints - Check whether the LVDS cable is connected correctly to the panel.
  • Page 29 4. Troubleshooting 4-4. Circuit diagrams when a blank screen is displayed (HDMI)

  • Page 30: Error Examples And Actions

    4. Troubleshooting 4-5. Error Examples and Actions Error Appearance Symptoms and Actions Remarks Symptom: HDMI signals are not recognized. *On how to input DDC, refer to the training manual. Cause: This error occurs because the PC cannot recognize the mode information since the HDMI DDC is not input to the monitor. Action: Input the HDMI DDC.

  • Page 31: Adjustment

    1) Use when updating the AD board code. 2) Download the WinDDC program, DDC Input program, and Hex and DDC files appropriate to the model through the Quality Control department of Samsung Electronics. Install the jig and input the data, as shown in the figure. Monitor needing...
  • Page 32 4. Troubleshooting 4-6-2. Service Function Specifications  Checking the Code Version 1. Check the MCU code version and checksum after entering SVC Mode. 2. Entering SVC Mode - Adjust the Brightness and Contrast values to 0. - Hold down the Enter button for five (5) seconds. - The SVC Function OSD is displayed.
  • Page 33 4. Troubleshooting 2. Press the - button to change the setting to On or Off.  When replacing the panel After replacing the panel, move to the Panel item and hold down the Menu button for five (5) seconds. The Ch. No is incremented by 1 and then both the On Time and Cycle are set to 0. This number is incremented by 1.
  • Page 34 4. Troubleshooting  Inputting the DDC Data Use the DDC Manager MTI-2050 version or later. 1) Click the Open [F5] icon. 2) Select Three EDID . 3) Select one DDC file,do it three times. 4) Click Next. 5) Enter the serial number and then press the Enter button ※...
  • Page 35 4. Troubleshooting  Inputting the MCU Data 1) Check the following options. - Manufacture: MSTAR - Device Type:TSUM16xxx - Communication Port: DSUB15 (Analog) - External Memory: PMC25LV020 2) Click the LoadFile button, select an MCU code file, and then click the Open [O] button. 4-15...
  • Page 36 4. Troubleshooting 3) Click the Auto Program button. 4) When programming and verification are complete, hard power the monitor off and then on again. 4-16...
  • Page 37 4. Troubleshooting  Inputting the Code (HDCP) 1. Run the service.exe file. 2. Click the HDCP button. 4-17...
  • Page 38 4. Troubleshooting 3. Click the HDCP Write button and select MStar_HDCPKEY. 4. Inputting the HDCP key is completed. 4-18...

  • Page 39: Wiring Diagram

    6. Wiring Diagram 6. Wiring Diagram 6-1. Wiring Diagram - Main Board...

  • Page 40: Wiring Diagram - Ip Board

    6. Wiring Diagram Board 6-2. Wiring Diagram - Main 3722-002922...

  • Page 41: Connector Functions

    * When a problem occurs: The No RGB output error may occur. CN400 Transmits the LVDS signals from the main board to the panel. * When a problem occurs: The Blank screen and No Power errors may occur. 6-4. Cables LVDS 30P FFC cable Code BN96-12453N (BX2450/BX2450N/BX2450L) BN96-12453M (BX2350) BN96-12453J (BX2250/BX2250N) Photo...

This manual is also suitable for:

Bx2450nBx2450lBx2250nBx2350Bx2450

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