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Samsung LA26B350F1, Service Manual

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4-12

4. Troubleshooting

WAVEFORMS

6

The Signal are Inputed to IC1201

7

The Signal are Inputed to IC1202

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Summary of Contents for LA26B350F1

Page 1: ...nual in the GSPN see the rear cover for the more information Chassis G3F26CCN G3F32CCN Model LA26B350F1 LA32B350F1 1 Precautions 2 Product specifications 3 Disassembly and Reassembly 4 Troubleshooting...

Page 2: ...isassembly and Reassembly 3 1 3 1 Disassembly and Reassembly 3 1 4 Troubleshooting 4 1 4 1 Troubleshooting 4 1 4 2 Alignments and Adjustments 4 13 4 3 Factory Mode Adjustments 4 14 4 4 White Balance C...

Page 3: ...rope samsungportal com China http china samsungportal com Asia http asia samsungportal com Mideast Africa http mea samsungportal com This Service Manual is a property of Samsung Electronics Co Ltd Any...

Page 4: ...ctrostatically sensitive devices Use caution when handling these components 3 1 Disassembly and Reassembly Cautions 1 Disconnect the LCD TV from the power source before disassembly 2 Follow these dire...

Page 5: ...3 2 3 Disassembly and Reassembly Description Picture Description Screws 2 Lift up rear cover and remove the stand 3 Remove Screw from the stand BRKT and top BRKT Lift up the stand BRKT and top...

Page 6: ...3 3 Disassembly and Reassembly Description Picture Description Screws 4 Disonnect cable from the boards 5 Lift up the LCD panel Reassembly procedures are in the reverse order of disassembly procedure...

Page 7: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LA26B350F1 Exploded View T0003 M0027 T0175 M0215 M0014 M0115 M0107 T0920 M0146 M0013...

Page 8: ...in 5W L350 26 32 1 S A M0215 BN07 00767A LCD PANEL LTF260AP03 1 S A M0115 BN61 04772A BRACKET STAND LINK B450 26inch SECC 1 S N A M0146 BN61 04818A BRACKET PANEL TOP B650 32 SECC T1 2 2 S N A M0014 BN...

Page 9: ...081 6002 001294 SCREW TAPPING BH M4 L16 ZPC BLK 9 S N A 2 T0081 6002 001294 SCREW TAPPING BH M4 L16 ZPC BLK 1 S N A 2 M0013 BN96 10916B ASSY COVER P REAR 26 LB350 SO LO HIPS HB 1 S A 3 T0069 AA60 0009...

Page 10: ...0 1 S A 4 D3007 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D3009 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D3017 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA...

Page 11: ...0501 000445 TR SMALL SIGNAL KTC3875S Y NPN 150mW SOT 1 S A 4 Q4001 0501 000445 TR SMALL SIGNAL KTC3875S Y NPN 150mW SOT 1 S A 4 Q6001 0501 000445 TR SMALL SIGNAL KTC3875S Y NPN 150mW SOT 1 S A 4 Q6002...

Page 12: ...1 S A 4 R1041 2007 000052 R CHIP 10Kohm 1 1 10W TP 1608 1 S N A 4 R1044 2007 000052 R CHIP 10Kohm 1 1 10W TP 1608 1 S N A 4 R1045 2007 000052 R CHIP 10Kohm 1 1 10W TP 1608 1 S N A 4 R1005 2007 000067...

Page 13: ...S N A 4 R6113 2007 000138 R CHIP 100ohm 5 1 16W TP 1005 1 S N A 4 R6116 2007 000138 R CHIP 100ohm 5 1 16W TP 1005 1 S N A 4 R6120 2007 000138 R CHIP 100ohm 5 1 16W TP 1005 1 S N A 4 R6121 2007 000138...

Page 14: ...A 4 R2031 2007 000143 R CHIP 4 7Kohm 5 1 16W TP 1005 1 S N A 4 R2032 2007 000143 R CHIP 4 7Kohm 5 1 16W TP 1005 1 S N A 4 R2033 2007 000143 R CHIP 4 7Kohm 5 1 16W TP 1005 1 S N A 4 R2034 2007 000143...

Page 15: ...S N A 4 R6142 2007 000148 R CHIP 10Kohm 5 1 16W TP 1005 1 S N A 4 R6152 2007 000148 R CHIP 10Kohm 5 1 16W TP 1005 1 S N A 4 R6176 2007 000148 R CHIP 10Kohm 5 1 16W TP 1005 1 S N A 4 R6182 2007 000148...

Page 16: ...S N A 4 R6220 2007 000171 R CHIP 0ohm 5 1 16W TP 1005 1 S N A 4 R7007 2007 000171 R CHIP 0ohm 5 1 16W TP 1005 1 S N A 4 R7008 2007 000171 R CHIP 0ohm 5 1 16W TP 1005 1 S N A 4 R7018 2007 000171 R CHIP...

Page 17: ...1 S N A 4 R3044 2007 000174 R CHIP 47ohm 5 1 16W TP 1005 1 S N A 4 R3077 2007 000174 R CHIP 47ohm 5 1 16W TP 1005 1 S N A 4 R3078 2007 000174 R CHIP 47ohm 5 1 16W TP 1005 1 S N A 4 R4013 2007 000174...

Page 18: ...100Kohm 1 1 16W TP 1005 1 S N A 4 R1072 2007 007107 R CHIP 100Kohm 1 1 16W TP 1005 1 S N A 4 R2201 2007 007107 R CHIP 100Kohm 1 1 16W TP 1005 1 S N A 4 R2307 2007 007107 R CHIP 100Kohm 1 1 16W TP 1005...

Page 19: ...C1044 2203 000489 C CER CHIP 2 2nF 10 50V X7R TP 1005 1 S A 4 C6048 2203 000489 C CER CHIP 2 2nF 10 50V X7R TP 1005 1 S A 4 C6049 2203 000489 C CER CHIP 2 2nF 10 50V X7R TP 1005 1 S A 4 C6050 2203 00...

Page 20: ...100nF 10 50V X7R TP 1608 1 S N A 4 C2046 2203 005249 C CER CHIP 100nF 10 50V X7R TP 1608 1 S N A 4 C2047 2203 005249 C CER CHIP 100nF 10 50V X7R TP 1608 1 S N A 4 C2048 2203 005249 C CER CHIP 100nF 1...

Page 21: ...7033 2203 006158 C CER CHIP 100nF 10 16V X7R 1005 1 S N A 4 C7034 2203 006158 C CER CHIP 100nF 10 16V X7R 1005 1 S N A 4 C7036 2203 006158 C CER CHIP 100nF 10 16V X7R 1005 1 S N A 4 C7039 2203 006158...

Page 22: ...C1031 2203 006618 C CER CHIP 2200nF 80 20 16V Y5V TP 160 1 S N A 4 C1071 2203 006618 C CER CHIP 2200nF 80 20 16V Y5V TP 160 1 S N A 4 C3007 2203 006681 C CER CHIP 100nF 80 20 25V Y5V 1005 1 S N A 4 C3...

Page 23: ...33nF 5 50V C0G TP 1005 1 S N A 4 C4002 2203 006992 C CER CHIP 0 33nF 5 50V C0G TP 1005 1 S N A 4 C5009 2203 006992 C CER CHIP 0 33nF 5 50V C0G TP 1005 1 S N A 4 C5011 2203 006992 C CER CHIP 0 33nF 5...

Page 24: ...9OHM 30MHz 1 S A 4 T0568 3301 001404 BEAD SMD 30ohm 2012 TP 15 9OHM 30MHz 1 S A 4 M0106 3708 001150 CONNECTOR FPC FFC PIC 30P 1mm SMD A SN Y 1 S A 4 M0018 BN97 03240A ASSY MICOM T LL5MEAM 1014 0 LOLA...

Page 25: ...83 BAG ZIPPER LDPE T0 05 W60 L60 TRP 4 PE M 1 S N A 3 T0268 3903 000431 CBF POWER CORD DT IN DP3 Y A IEC320 C13 1 S A 2 M0045 BN96 11240G ASSY ACCESSORY MANUAL LA26B350F1XXS 1 S A 3 T0524 6902 000361...

Page 26: ...andards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL Publication UL1410 59 7 With the unit completely reassembled plug the AC line cord directly into a 120V AC...

Page 27: ...round lead last 1 3 Electrostatically Sensitive Devices ESD Precautions Some semiconductor solid state devices can be easily damaged by static electricity Such components are commonly called Electrost...

Page 28: ...being exposed to moisture Otherwise it may cause a fire or electric shock Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product Also check the ant...

Page 29: ...1 4 1 Precautions Memo...

Page 30: ...p 5 positive at 75 internally terminated Input Sync Signal H V Separate TTL P or N Maximum Pixel Clock rate 85 5MHz Active Display Horizontal Vertical 575 769 H x 323 712 V mm AC power voltage Frequen...

Page 31: ...rnally terminated Input Sync Signal H V Separate TTL P or N Maximum Pixel Clock rate 310MHz Active Display Horizontal Vertical 697 685 H x 392 256 V mm AC power voltage Frequency AC 110V 240V 50 60Hz...

Page 32: ...585 25 UHF T 277 25 SUPER T 276 00 T 277 25 34 34 593 591 25 UHF U 283 25 SUPER U 282 00 U 283 25 35 35 599 597 25 UHF V 289 25 SUPER V 288 00 V 289 25 36 36 605 603 25 UHF W 295 25 SUPER W 294 00 W...

Page 33: ...25 91 91 91 625 25 ULTRA 91 624 00 91 625 25 92 92 92 631 25 ULTRA 92 630 00 92 631 25 93 93 93 637 25 ULTRA 93 636 00 93 637 25 94 94 94 643 25 ULTRA 94 642 00 94 643 25 95 95 A 5 91 25 FM A 5 90 00...

Page 34: ...8 x 214 8 x 496 4mm with stand 664 8 x 75 1 x 452 8mm without stand 26 669 8 x 215 9 x 500 4mm with stand 669 8 x 75 4 x 450 6mm without stand 32 799 6 x 252 x 576 6mm with stand 799 6 x 79 x 525 3mm...

Page 35: ...ries AAA x 2 BN59 00880A Samsung Electronics Service center Power Cord 3903 000172 Cover Bottom BN63 05618B Owner s Instructions BN68 02101H Warranty Card Registration Card Safety Guide Manual Not ava...

Page 36: ...e 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 Check internal Pattern lola3 if fhere...

Page 37: ...the following Check the internal cable connection status inside the unit Check the fuses of each part Check the output voltage of SMPS Replace the Main Board Diagnostics Does proper DC A3 3V appear at...

Page 38: ...ge a main PCB ass y No Does the digital data appear at the output of LVDS Cable Power Indicator is off Lamp on no video No Check a PC source and check the connection of DSUB cable Check a IC6003 Chang...

Page 39: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal...

Page 40: ...stics No Does the digital data appear at R6021 R6024 R6026 R6028 R6010 R6017 Power Indicator is off Lamp on no video No Check the connection of HDMI cable Check a IC6003 Change a main PCB ass y Check...

Page 41: ...4 6 4 Troubleshooting WAVEFORMS 2 Digital Output Data 3 Signal of HDMI Data...

Page 42: ...e Panel is disconnected Diagnostics No Check a B voltage 2 of Tuner 5V change a main PCB ass y No No Power Indicator is off Lamp on no picure Yes Change a main PCB ass y Does the signal appeat 8 of TU...

Page 43: ...4 8 4 Troubleshooting WAVEFORMS 3 CVBS Output Signal 4 Tuner_CVBS Output Signal...

Page 44: ...the LVDS cable connecting the Main Board and the Panel is disconnected Diagnostics No Check a connection harness No Power Indicator is off Lamp on no picture Yes Does the signal appear at C6018 C6021...

Page 45: ...4 10 4 Troubleshooting WAVEFORMS 4 CVBS Output Signal...

Page 46: ...n harness and headphone jack side AV Check Sound Processor IC6003 M star No Picture is display no sound Check a B12V Line Change a main PCB ass y No Does the signal appear at R2008 R2009 R2010 AUSD AU...

Page 47: ...4 12 4 Troubleshooting WAVEFORMS 6 The Signal are Inputed to IC1201 7 The Signal are Inputed to IC1202...

Page 48: ...essential Avoid overload Excessive signal from a sweep generator might overload the front end of the TV When inserting signal markers do not allow the marker generator to distort test result Connect...

Page 49: ...PICTURE ON FACTORY The buttons are active in the service mode 1 Remote Control Key Power Arrow Up Arrow Down Arrow Left Arrow Right Menu Enter Number Key 0 9 2 Function Control Key Power CH CH VOL VOL...

Page 50: ...CO SEMCO XUGUANG DDR Samsung Samsung Ch Table SUWON SUWON SESK SHE TTSEC SEIN SDMA TSED SAVINA SIEL TSE Local Set East Asia Vietnam Philippines China India Iran Israel Middle Asia East Asia Thailand A...

Page 51: ..._Offset 2nd_R_Offset 2nd_G_Offset 2nd_B_Offset 2nd_R_Gain 2nd_G_Gain 2nd_B_Gain 132 139 67 67 67 128 128 128 85 85 86 140 142 142 57 57 57 114 114 0 255 0 255 0 255 0 255 0 255 0 255 0 255 0 255 0 255...

Page 52: ...me Curve NT Conversion Auto Power LVDS Format LNA Menu WatchDog Bus Stop Panel Auto Setting HotPlug HotPlugCtrl HotPlugDelay USB Upgrade Spread Spectrum 8 32 EXT Off On On Flof Lang OSD Off Off EA Off...

Page 53: ...255 0 255 0 255 0 255 0 255 Carrier2 Threshold Amp On Thr High Amp On Thr Low Amp Off Thr High Amp Off Thr Low NSR On Thr High NSR On Thr Low NSR Off Thr High NSR Off Thr Low 2 0 1 0 13 0 24 0 0 255...

Page 54: ...0 255 0 7 0 255 IPC MJC Film Det Speed NT Film Det Speed PAL Motion Hist Motion History 80 80 5 3 0 255 0 255 0 7 0 7 Color Space Red Sat Red Hue Green Sat Green Hue Blue Sat Blue Hue Cyan Sat Cyan H...

Page 55: ...Movie WB Moive Color Mode Color Tone Msub Brigh Msub Contr W1_RGAIN W1_BGAIN W1_ROFFS W1_BOFFS W2_RGAIN W2_BGAIN W2_ROFFS W2_BOFFS NO_RGAIN NO_BGAIN NO_ROFFS NO_BOFFS Movie_Contr Movie_Brigh Moive_Col...

Page 56: ...amic Dimming Dynamic CE Off On Off Dynamic CE B Slope Off Off On Off On Off LNA Plus RF Db 0 Level RF Db 1 Level RF Db 2 Level RF Db 3 Level 3 8 13 25 0 255 0 255 0 255 0 255 Megazine LNA UART Select...

Page 57: ...3 0 7 0 7 0 7 0 3 0 3 0 3 0 7 0 3 0 3 0 3 Sharpness Sharpness H1 Gain H2 Gain H3Gain H4 Gain V1 Gain V2 Gain H Overshoot B1 H Overshoot B2 V Overshoot B5 V Overshoot B8 H Undershoot B1 H Undershoot B2...

Page 58: ...ue M_Skin_Hue M_Skin_X M_Skin_Y Mid_color_level M_Mid_color_level 0 0 160 96 160 240 0 0 0 0 0 176 176 0 11 0 11 0 255 0 255 0 255 0 255 0 15 0 127 0 11 0 11 0 255 0 255 EEPROM Reset EEPROM Reset EEPR...

Page 59: ...1 Source HDMI 2 Setting Mode 1280 720 60Hz 3 Pattern Pattern 24 Chess Pattern Chess Pattern 4 Use Equipment CA210 Master MSPG925 Generator Use other equipment only after comparing the result with tha...

Page 60: ...te it returns to the high level menu 8 You can see the change of the Comp Calibration status from Failure to Success Method of Color Calibration PC 1 Apply the VESA XGA Lattice N0 21 pattern signal to...

Page 61: ...e Balance Adjustment 5 W B low light hight light Sub Bright R offset G offset B offset Sub Contrast R gain G gain B gain W B adjustment Condition refer next page 4 5 HOW TO UPGRADE 4 5 1 Software Upgr...

Page 62: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram LOLA3 Speaker Function LIPS Board Speaker T CON FRC LOLA3 Speaker Function Speaker T CON FRC...

Page 63: ...D PC_SR_IN PC_SL_IN PC_SL_IN PC_SL_IN PC_SR_IN PC_SR_IN PC INPUT JA4005 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PC_RED PC_GREEN PC_BLUE GND GND GND GND GND PC_5V PC_IDENT GND SDA_TXD PC_H_SYNC PC_V_SYNC S...

Page 64: ...2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 HDMI2_RX2 GND HDMI2_RX2 HDMI2_RX1 GND HDMI2_RX1 HDMI2_RX0 GND HDMI2_RX0 HDMI2_RXCLK GND HDMI2_RXCLK HDMI_CEC GND HDMI2_DDC_SCL HDMI2_DDC_SDA GND HD...

Page 65: ...6 4 6 Wiring Diagram 6 2 Wiring Picture...

Page 66: ...ve symptom abnormal Picture CN2001 Speaker Connection Main Board and Speaker defective symptom No picture CN4007 Function IR Connection Main Board and Function IR Assy defective symptom No picture dia...

Page 67: ...iagram 6 4 Cables Use 1 LVDS CONNECTOR 2 CONNECTOR POWER 30P 3 ASSY SPEAKER Code BN96 07766S 26 BN96 07766R 32 BN39 00691L 26 BN39 00691K 32 BN96 04769C 26 32 Photo Use 4 IR to FUNCTION Code BN96 1099...

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