Samsung LA22B350F2 Service Manual
  1. Manuals
  2. Brands
  3. Samsung Manuals
  4. LCD TV
  5. LA22B350F2
  6. Service manual

Samsung LA22B350F2 Service Manual

Hide thumbs Also See for LA22B350F2:
Table of Contents

Advertisement

Quick Links

See also: User Manual
SERVICE
TFT-LCD TV
LA22B350F2
Refer to the service manual in the GSPN (see the rear cover) for the more information.
LCD-TV
Chassis
: N66F
Model
: LA22B350F2
LA22B450C8
Manual
1. Precautions
2. Product specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
Contents

Advertisement

Table of Contents
loading

Related Manuals for Samsung LA22B350F2

Summary of Contents for Samsung LA22B350F2

  • Page 1: Service Manual

    LCD-TV Chassis : N66F Model : LA22B350F2 LA22B450C8 SERVICE Manual TFT-LCD TV Contents 1. Precautions 2. Product specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram LA22B350F2 Refer to the service manual in the GSPN (see the rear cover) for the more information.

  • Page 2: Table Of Contents

    2-1. Feature & Specifications ....................2-1 2-2. Specification Comparison to Old Models ................ 2-5 2-3. Accessories ........................2-6 3. Disassembly and Reassembly ................3-1 3-1. Disassembly and Reassembly (LA22B350F2) ............... 3-1 3-2. Disassembly and Reassembly (LA22B450C8) ............... 3-4 4. Troubleshooting ...................... 4-1 4-1. Troubleshooting ......................4-1 4-2.
  • Page 3 GSPN (Global Service Partner Network) Area Web Site North America http://service.samsungportal.com Latin America http://latin.samsungportal.com http://cis.samsungportal.com Europe http://europe.samsungportal.com China http://china.samsungportal.com Asia http://asia.samsungportal.com Mideast & Africa http://mea.samsungportal.com © 2009 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. P/N: BN82-00598A-00...
  • Page 4 3. Disassembly and Reassembly 3. Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LA22B350F2 LCD TV. WARNING: This LCD TV contains electrostatically sensitive devices. Use caution when handling these components. 3-1. Disassembly and Reassembly (LA22B350F2) Cautions: 1.
  • Page 5 3. Disassembly and Reassembly Description Picture Description Screws 2. Remove the screws from the Stand. Remove stand. 3. Disconnect cable from the boards.
  • Page 6 3. Disassembly and Reassembly Description Picture Description Screws 4. Remove the Speaker. 5. Remove Screw from the the boards. Reassembly procedures are in the reverse order of disassembly procedures. ※...
  • Page 7 3. Disassembly and Reassembly 3-2. Disassembly and Reassembly (LA22B450C8) Cautions: 1. Disconnect the LCD TV from the power source before disassembly. 2. Follow these directions carefully; never use metal instruments to pry apart the cabinet. Description Picture Description Screws 1. Remove the screws from the Stand. Remove stand.
  • Page 8 3. Disassembly and Reassembly Description Picture Description Screws 2. Place the TV face down on cushioned table. Remove the screws from rear cover. 3. Disconnect cable from the boards.
  • Page 9 3. Disassembly and Reassembly Description Picture Description Screws 4. Remove the Speaker. 5. Remove Screw from the the boards. Reassembly procedures are in the reverse order of disassembly procedures. ※...
  • Page 10 5. Exploded View & Part List 5. Exploded View & Part List 5-1. LA22B350F2V Exploded View...
  • Page 11 5. Exploded View & Part List 5-1-1. LA22B350F2V Parts List Location No. Code No. Description & Specifi cation Q’ty S.A/S.N.A Remark M0013 BN96-11231C ASSY COVER P-REAR;LB350 22,HIPS,HB,BK500 M0014 BN94-02998A ASSY PCB MAIN;LA22B350F2XXZ M0027 BN96-11238A ASSY STAND P-BASE;LB350 22,ABS+PMMA,HB,B M0174 BN44-00302A AC VSS(I);IP-55145T,L650,1.9~2.9mA,8.2~9 M0215 BN07-00744A...
  • Page 12 5. Exploded View & Part List 5-2. LA22B350F2V Parts List Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specifi cation Q’ty SA/SNA Remark BN90-02234D ASSY COVER FRONT;LB350 22 T0003 BN96-11230D ASSY COVER P-FRONT;LB350 22,ABS+PMMA,HB, ...3 M0081 6003-001188...
  • Page 13 5. Exploded View & Part List Level Location No. Code No. Description & Specifi cation Q’ty SA/SNA Remark ..4 D0254 0404-001020 DIODE-SCHOTTKY;BAT54C,30V,200mA,SOT-23,T ..4 T0139 0406-001271 DIODE-TVS;RCLAMP0524P,6/-/-V,150W,SLP251 ..4 Q101 0501-000445 TR-SMALL SIGNAL;KTC3875S-Y,NPN,150mW,SOT ..4 PQ02 0501-002080 TR-SMALL SIGNAL;2SC2412K,NPN,200mW,SC-59 ..4 CEQ2 0505-000110 FET-SILICON;2N7002,N,60V,115mA,7.5ohm,0..4 Q409 0505-001165...
  • Page 14 5. Exploded View & Part List Level Location No. Code No. Description & Specifi cation Q’ty SA/SNA Remark ..4 2007-000763 R-CHIP;330ohm,1%,1/10W,TP,1608 ..4 R124 2007-000775 R-CHIP;33Kohm,5%,1/16W,TP,1005 ..4 R552 2007-000913 R-CHIP;43Kohm,5%,1/10W,TP,1608 ..4 DR37 2007-000932 R-CHIP;470ohm,5%,1/16W,TP,1005 ..4 2007-001237 R-CHIP;910ohm,1%,1/10W,TP,1608 ..4 OTR1 2007-001292 R-CHIP;33ohm,5%,1/16W,TP,1005 ..4 R326 2007-001325...
  • Page 15 5. Exploded View & Part List Level Location No. Code No. Description & Specifi cation Q’ty SA/SNA Remark ..4 AD480 2203-006336 C-CER,CHIP;10000nF,10%,25V,X5R,3216 ..4 C125 2203-006361 C-CER,CHIP;10000nF,10%,10V,X5R,TP,2012 ..4 HDC11 2203-006562 C-CER,CHIP;1000nF,10%,10V,X5R,TP,1005 ..4 AD480 2203-006618 C-CER,CHIP;2200nF,+80-20%,16V,Y5V,TP,160 ..4 AD480 2203-006681 C-CER,CHIP;100nF,+80-20%,25V,Y5V,1005 ..4 AD480 2203-007176 C-CER,CHIP;10000nF,10%,16V,X5R,TP,2012 ( ..4...
  • Page 16 T0524 6902-001107 BAG PE;LDPE,T0.05,W450,L400,TRP,0,3Separ ...3 BN43-00004A BATTERY;BM1L,BATTERY,MN,600mAh,7.9g BN96-15056A ASSY ACCESSORY-MANUAL;LA22B350F2VXXZ ...3 T0524 6902-000110 BAG PE;LDPE,T0.05,W250,L400,TRP,28,2,9.2 ...3 T0527 AA68-00764A LABEL-PASSING;SAMSUNG ALL,ART PAPER,CLR, ...3 T0527 AA68-02517A LABEL;PJTV(TTSEC),COPPERPLATE,50,75,YELL ...3 T0059 AA68-03184A MANUAL FLYER-CARD-08;ALL MODEL,CHINESE,2 ...3 T0527 BN68-00513A LABEL-E,PASS;ALL MODEL,YUPO(110G),50X15, ...3 BN68-02999A MANUAL USERS-IB;Comm,Samsung,SC,China,W/ ...3...

  • Page 17: 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 18: 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 19: Installation Precautions

    1. Precautions 1-4. Installation Precautions For safety reasons, more than a 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 20 1. Precautions Memo...

  • Page 21: Product Specifications

    2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model LA22B350F2 Feature RF, 1-HDMI/DVI, 1-Component, 1-AV, D-sub � Brightness : 300cd/m � Contrast Ratio : 800:1 � Response time : 5ms � Dynamic contrast, PVA, TN � PIP(in HDMI 1, Component 1, PC Mode and Sub picture is available only in TV analog mode) �...
  • Page 22 2. Product specifications Model LA22B450C8 Feature RF, 1-HDMI/DVI, 1-Component, 1-AV, D-sub � Brightness : 300cd/m � Contrast Ratio : 800:1 � Response time : 5ms � Dynamic contrast, PVA, TN � PIP(in HDMI 1, Component 1, PC Mode and Sub picture is available only in TV analog mode) �...
  • Page 23 2. Product specifications CHANNEL FREQUENCY TABLE OUTPUT FREQUENCY : ANALOG fv:45.75MHz, fs:41.25MHz DIGITAL Fc:44MHz TUNING STEP SIZE : FIRST PLL 250KHz SECOND PLL 62.5KHz OSD CH NO CH NO CH NO CH NO Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 72.
  • Page 24 2. Product specifications OSD CH NO CH NO CH NO CH NO Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 499.25 ULTRA 498.00 499.25 505.25 ULTRA 504.00 505.25 511.25 ULTRA 510.00 511.25 517.25 ULTRA 516.00 517.25 523.25 ULTRA 522.00 523.25 529.25...

  • Page 25: Specification Comparison To Old Models

    2. Product specifi cations 2-2. Specifi cation Comparison to Old Models Model B350(LA22B350F2) / B450(LA22B450C8) Coral (LA22A450C) Design Display Type LCD TV LCD TV Built-in Tuner Resolution 1366 x 768 1366 x 768 LCD Panel TFT LCD Panel 50Hz TFT LCD Panel 50Hz Screen Size 22”...

  • Page 26: Accessories

    (AAA x 2) (M/EAST ASIA) BN59-00889A (LATIN AMERICA) Power Cord 3903-000172 Owner’s Instructions BN68-02101L Samsung Electronics Service center Warranty Card / Registration Card / Safety Guide Manual AA68-03184A (Not available in all locations) Stand Screw x 2 6002-001294 B350 : BN96-11238A...

  • Page 27: Troubleshooting

    4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Check the various cable connections first. • Check to see if there is a burnt or damaged cable. • Check to see if there is a disconnected or loose cable connection. • Check to see if the cables are connected according to the connection diagram. Check the power input to the Main Board.
  • Page 28 Check the internal cable connection status inside the unit. Major Check the fuses of each part. checkpoints Check the output voltage of SMPS. Replace the Main Board. LA22B350F2 LA22B450C8 LAMP off, power indicator Check a connection a power cable. LED red color? Diagnostics Does proper DC5V appear at Change a Assy PCB Power.

  • Page 29: No Video (Analog Pc Signal)

    Does the digital data appear at the Check a IC4000. output of LVDS Cable? Change a main PCB ass’y Check a LVDS cable? Replace a lcd panel? Please, Call to Samsung Co. LTD. Caution Make sure to disconnect the power before working on the IP board.
  • Page 30 4. Troubleshooting WAVEFORMS R,G,B Output Signal...
  • Page 31 Check the HDMI source Major Check the M-star checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. LA22B350F2 LA22B450C8 Power Indicator is off. Lamp on, no video. Check the connection Input a HDMI cable.
  • Page 32 4. Troubleshooting WAVEFORMS Digital Output Data Signal of HDMI(Data)
  • Page 33 Does the Signal appear at C4022 Change a main PCB ass’y. of IC4000? Check the LVDS cable? Replace the LCD panel? Please, Call to Samsung Co. LTD. Caution Make sure to disconnect the power before working on the IP board.
  • Page 34 4. Troubleshooting WAVEFORMS CVBS Output Signal Tuner_CVBS Output Signal...
  • Page 35 Lamp on, no picture. Diagnostics Does the signal appear at C4025 of Check a connection harness. IC4000? Check a LVDS cable ? Replcelcd panel? Please, Call to Samsung Co. LTD. Caution Make sure to disconnect the power before working on the IP board.
  • Page 36 4. Troubleshooting WAVEFORMS CVBS Output Signal 4-10...

  • Page 37: No Sound

    Check the RF Source Major Check the M-star checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. LA22B350F2 LA22B450C8 Connect a sound cable. Picture is display, no sound. control a volume. Diagnostics...
  • Page 38 4. Troubleshooting WAVEFORMS The Signal are Inputed to IC1201 The Signal are Inputed to IC1202 4-12...

  • Page 39: Alignments And Adjustments

    4. Troubleshooting 4-2. Alignments and Adjustments 4-2-1. General Alignment Instuction Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. Use the specified test equipment or its equivalent. Correct impedance matching is essential.

  • Page 40: Factory Mode Adjustments

    4. Troubleshooting 4-3. Factory Mode Adjustments 4-3-1 Entering Factory Mode To enter ‘Service Mode’ Press the remote -control keys in this sequence : - If you do not have Factory remote - control INFO MENU MUTE Power on - If you have Factory remote - control PICTURE ON DISPLAY FACTORY...

  • Page 41: Factory Data

    PB350, PB430, PB450, PB550, PB550_FBE, L_ BASIC, LB350, LB360, LB360_22, LB450, LB450_22, LB460, LB480, LB480_22, LB530, LB550, B550_FBE, LB622, LB550_FBE_NM Tuner Select SEMCO SEMCO, XUGUANG Samsung Samsung Ch Table SUWON SUWON, SESK, SHE, TTSEC, SEIN, SDMA, TSED, SAVINA, SIEL, TSE Local Set...
  • Page 42 4. Troubleshooting ADC Result 1st_AV_Gain 0 ~ 255 1st_AV_Offset 0 ~ 255 1st_Comp_Gain 0 ~ 255 1st_Comp_Gain_Cb 0 ~ 255 1st_Comp_Gain_Cr 0 ~ 255 1st_Comp_Offset 0 ~ 255 1st_Comp_Offset_Cb 0 ~ 255 1st_Comp_Offset_Cr 0 ~ 255 1st_PC_R_Gain 0 ~ 255 1st_PC_G_Gain 0 ~ 255 1st_PC_B_Gain...
  • Page 43 4. Troubleshooting Control  EDID EDID Protect On/Off EDID Type L13_1920_1080 P12_1024_768, P13_1024_768, P12_1366_768, P13_1366_768, P12_1920_1080, P13_1920_1080, L12_1366_768, L13_1366_768, L12_1920_1080, L13_1920_1080 EDID Write(0x4D,0) L13_1920_1080 P12_1024_768, P13_1024_768, SUCCESS P12_1366_768, P13_1366_768, P12_1920_1080, P13_1920_1080, L12_1366_768, L13_1366_768, L12_1920_1080, L13_1920_1080 Video Mute Time 0~99 Sub Option Inch 32”...
  • Page 44 4. Troubleshooting Hotel Option  Hotel Option Hotel Mode On/Off Shop Option  Shop Option Shop Mode On/Off Sound  Detection Threshold OPTION RANGE SOUND Pilot Threshold M2S Thr High 0~255 M2S Thr Low 0~255 S2M Thr High 0~255 S2M Thr Low 0~255 Carrier1 Threshold Amp On Thr High 0~255...
  • Page 45 4. Troubleshooting MST69A84HQ  VDEC SYNC_LVL 0~255 HPLL_MD HPLL_SPD1 0~63 HPLL_SPD2 0~255 CBCRLP_MD YC_DLY IFCOMP 0~63 SAT_ADJ 0~255 YSEPFLT NOISE_LVL 0~255 Film Det Speed NT 0~255 IPC/MJC Film Det Speed PAL 0~255 Motion Hist Motion History Red Sat 0~30 Color Space Red Hue 0~127 Green Sat...
  • Page 46 4. Troubleshooting  Pattern Select 0~25 B-Slope Gain 0~255 B-Tilt Min 0~255 B-Tilt Max 0~255 LFuc-Basis 0~255 HFuc-Basis 0~255 Mean-Offset1 0~255 Mean-Offset2 0~255 Mean-Slope 0~255 ACR Offset 0~127 ACR Th1 0~255 ACR Th2 0~255 Skin Enable 0~255 Skin Uv 0~255 Mskin Uv 0~255 Sub Color...
  • Page 47 4. Troubleshooting EPA Standard  Std Contr 0~100 EPA Standard Std Bright 0~100 Std Sharp 0~100 Std Color 0~100 Std Tint 0~100 Std Backlight 0~10 Adjust  Adjust Dynamic Dimming On/Off Dynamic CE Dynamic CE On/Off B Slope On/Off LNA Plus RF Db 0 Level 0~255 RF Db 1 Level...
  • Page 48 4. Troubleshooting YC_Delay  PAL BG YC Delay PAL DK PAL I SECAM BG SECAM DK SECAM L NTSC 358 NTSC 443 AV PAL AV SECAM AV NT358 AV NT443 AV PAL60 Sharpness  Sharpness H1 Gain 0~63 H2 Gain 0~63 H3Gain 0~63...
  • Page 49 4. Troubleshooting  Skin X 0~11 Skin Y 0~11 B Slope 0~255 DLC ML 0~255 DLC_MH 0~255 DLC_H 0~255 Skin_SAT 0~15 Skin_Hue 0~127 M_Skin_Hue M_Skin_X 0~11 M_Skin_Y 0~11 Mid_color_level 0~255 M_Mid_color_level 0~255 EEPROM Reset  EEPROM Reset EEPROM Reset NVR All Clear On/Off Defect Log ...

  • Page 50: White Balance -Calibration

    4. Troubleshooting 4-4. White Balance - Calibration 4-4-1 White Balance -Calibration 1. Calibration AV Calibration Comp Calibration PC Calibration HDMI Calibration 4-4-2 Service Adjustment - You must perform Calibration in the Lattice Pattern before adjusting the White Balance. Color Calibration ...
  • Page 51 4. Troubleshooting Method of Color Calibration (AV)  1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port 2) Press the Source key to switch to “AV1” mode 3) Enter Service mode 4) Select the “Calibration” menu 5) Select the “AV Calibration”...

  • Page 52: How To Upgrade

    4. Troubleshooting 4-4-3 White Balance - Adjustment (low light) (hight light) Sub Bright Sub Contrast 5. W/B R offset R gain G offset G gain B offset B gain (W/B adjustment Condition refer next page) 4-5. HOW TO UPGRADE 4-5-1 Software Upgrade (MSTAR ISP Tool) MSTAR ISP TOOL ...

  • Page 53: Wiring Diagram

    6. Wiring Diagram 6. Wiring Diagram 6-1. Wiring Diagram...
  • Page 54 6. Wiring Diagram COMP1 / AV1 INPUT (CN3300) PC INPUT(CN3200) POWER and Dimming(CN1001) PC_RED COMP_SR_IN PC_GREEN A13V COMP_SL_IN PC_BLUE COMP_SL_IN COMP_SR_IN (CN3301) B3.3VD PC_5V PC_IDENT IDENT_AV COMP_Y SDA_TXD PC_H_SYNC IDENT_COMP PC_V_SYNC COMP_PB SCL_RXD COMP_PR HDMI Connection (CN3100) COMP_PR HDMI_RX2+ PC/DVI SOUND INPUT(JA3400) HDMI_RX2- HDMI_RX1+ PC_SR_IN...

  • Page 55: Wiring Picture

    6. Wiring Diagram 6-2. Wiring Picture LA22B350F2 LA22B450C8...

  • Page 56: Connector Functions

    6. Wiring Diagram 6-3. Connector Functions Connector Functions CN1001 <-> SMPS Supply dimming power from SMPS to Main Board. * defective symptom : abnormal Picture CN2001 <-> Speaker Connection Main Board and Speaker. * defective symptom : No picture CN5401 <-> Function & IR Connection Main Board and Function &...

This manual is also suitable for:

La22b450c8

Table of Contents