Samsung TXN2771HFX/XAA Service Manual Download Page 51 | Manualshive

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Samsung TXN2771HFX/XAA Service Manual Download Page 51

Troubleshooting

Samsung Electronics

7-1

7. Troubleshooting

7-1 No Raster

Check
ST-BY

Check ST5V

Q804 "E"

Check VIN(DC)

TS801S PIN 13

Abnormal

Abnormal

Abnormal

Check

FA803S

Check

MICOM

Check

FA801S

Normal

Normal

Normal

Normal

Abnormal

Normal

Abnormal

Abnormal

Abnormal

Abnormal

Normal

Normal

Normal

Normal

Check ST5V

HC801"D809"

Check ON/OFF

IC903 ; 3.3V

Check

MICOM

Check

B+(135V)

Check

F-BOX 5V, 9V

Check

F-BOX HD,VD

Check HIC401

Q402

Check

F-BOX I C

Check

H-BLK

V-BLK

Check9V:R829, IC803

5V:R827, FA802S

GND SHORT

REPLACE

F-BOX

Check

HC401 J6920

Check

DZ801,DZ802,

DZ803,IC804

Check

Vin(dc)T801S

Check

FP801S

Check

CRT ASSY

R529

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Summary of Contents for TXN2771HFX/XAA

Page 1: ...TXN2771HFX XAC TXN2670WHFXXAA COLOR TELEVISION RECEIVER CONTENTS Precautions Reference Information Specifications Alignment and Adjustments Exploded Views and Parts List Electrical Parts List Troubles...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd Mar 2003 Printed in Korea AA82 00406A...

Page 3: ...ts metal cabinets screwheads and control shafts The current measured should not exceed 0 5 milliamp Reverse the power plug prongs in the AC outlet and repeat the test Fig 1 1 AC Leakage Test 6 Antenna...

Page 4: ...t appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications Always determine the cause of damage or overheating and correct any potent...

Page 5: ...sible conductive parts examples metal panels input terminals and earphone jacks 6 Insulation Checking Procedure Disconnect the power cord from the AC source and turn the power switch ON Connect an ins...

Page 6: ...anti static solder removal device Many solder removal devices are not rated as anti static these can accumulate sufficient electrical charge to damage ESDs 7 Do not remove a replacement ESD from its...

Page 7: ...Hertz Hour Inches Per Second Kilowatt hour Kilogram Kilohertz Kilohm Kilometer Kilometer Per Hour Kilovolt Kilovolt ampere Kilowatt Liter Megahertz MV MW M m A F H m s W mA mg mH mI mm ms mV nF pF Ib...

Page 8: ...fe Ground Green Y High High Frequency High Fidelity Inductance Capacitance Integrated Circuit Intermediate Frequency I O L L LED LF MOSFET MTS NAB NEC NTSC OSD PCB PLL PWM QIF R RC RF R Y SAP SAW SIF...

Page 9: ...002000 0801 000662 1001 001082 1001 001177 1203 001419 1203 002186 SDA555X OTP DDRI001A TCPN3081PC09C S DETECTOR 7027 78R05 FJL6920YDTU GSIB660 78R05 7269A KA5Q1565RF LA7845 24WC16 393 DIP 8P 78R09 MS...

Page 10: ...1201 001131 1201 000010 1203 000165 0502 000153 0502 000131 1201 001588 1201 001588 1201 001588 1201 000010 LF25C CXA2151Q UPD64083GF VSP9407B B11 CXA2165Q SC2344 D 2SA1011 D 6111Q 6111Q 6111Q 2030 7...

Page 11: ...Tuning System Intermediate Frequency Power Supply NTSC M VHF CH 2 13 UHF CH 14 69 CATV CH 1 14 125 VHF UHF 75 unbalanced Video 45 75 MHz Sound 41 25 MHz Chrominance Subcarrier 42 17 MHz AC 120V 60Hz E...

Page 12: ...3 2 Samsung Electronics MEMO...

Page 13: ...e control model adopting KS4A chassis Depending on sales location and product specifications some of specifications herein may be changed KS4A contains a dynamic focus circuit When CRT PCB FBT or CRT...

Page 14: ...t available use a DC multi meter in No Signal black screen to adjust RK BK GK so that the highest voltage becomes 175Vp p 4 1 4 White Balance Adjustment 1 Warm up the TV set for at least 30 minutes 2...

Page 15: ...stments are correct 2 Adjust Screen Voltage before White Balance Adjustments Make sure Screen Voltage is correct 3 If White Balance has been readjusted re check Screen Voltage 4 After adjustments are...

Page 16: ...d BUS STOP STOP LOW CXA2150Q CXA2151Q VSP940X BA7657F MSP34XX TUNER Control jack CXA2150Q CXA2151Q VSP940X BA7657F MSP34XX TUNER Control jack Reset when MSP34XX IC SOUND PROCESS IC has an error Active...

Page 17: ...1 2V p p 0 9V p p HIGH HIGH HIGH HIGH H L HIGH OSD B OUT OUTPUT jack 0 38V p p half tone 0 9V p p OSD F B OUTPUT jack Clamped at SAND PULSE Half Tone LOW V SYNC INPUT F B INPUT JACK System NTSC PAL MU...

Page 18: ...FX TXM3097HFX TXM3098HFX TXM3296HFX TXM3297HFX TXM3298HFX TXM3096HFX TXM3097HFX TXM3098HFX TXM3296HFX TXM3297HFX TXM3298HFX CT29Z7PGX CT32Z7PGX CT34Z7PGX INCH W B Value Model 32 WIDE 29 WIDE LG CRT TO...

Page 19: ...XM3296HFX TXM3297HFX TXM3298HFX CT29Z7PGX CT32Z7PGX CT34Z7PGX INCH ITEM Model 32 WIDE 29 WIDE LG CRT TOSHIBA CRT 34 FLAT 32 WIDE 32 WIDE 34 FLAT 29 FLAT 34 FLAT SDI CRT SDI CRT SDI CRT SDI CRT TOSHIBA...

Page 20: ...7HFX TXM3098HFX TXM3296HFX TXM3297HFX TXM3298HFX CT29Z7PGX CT32Z7PGX CT34Z7PGX INCH ITEM Model 32 WIDE 29 WIDE LG CRT TOSHIBA CRT 34 FLAT 32 WIDE 32 WIDE 34 FLAT 29 FLAT 34 FLAT SDI CRT SDI CRT SDI CR...

Page 21: ...TXM3098HFX TXM3296HFX TXM3297HFX TXM3298HFX CT29Z7PGX CT32Z7PGX CT34Z7PGX INCH ITEM Model 32 WIDE 29 WIDE LG CRT TOSHIBA CRT 34 FLAT 32 WIDE 32 WIDE 34 FLAT 29 FLAT 34 FLAT SDI CRT SDI CRT SDI CRT SD...

Page 22: ...X TXM3096HFX TXM3097HFX TXM3098HFX TXM3296HFX TXM3297HFX TXM3298HFX TXM3096HFX TXM3097HFX TXM3098HFX TXM3296HFX TXM3297HFX TXM3298HFX CT29Z7PGX CT32Z7PGX CT34Z7PGX INCH ITEM Model 32 WIDE 29 WIDE LG C...

Page 23: ...RT SDI CRT TOSHIBA CRT 32 32 32 1 31 31 32 32 32 23 10 18 7 1 2 1 32 32 32 1 31 31 32 24 32 25 10 18 7 1 2 1 32 32 32 1 31 31 32 32 32 10 10 18 7 1 2 1 32 32 32 1 31 31 32 32 32 20 10 18 7 1 2 1 32 32...

Page 24: ...4 FLAT 29 FLAT 34 FLAT SDI CRT SDI CRT SDI CRT SDI CRT TOSHIBA CRT 3 1 3 3 7 2 1 2 3 3 1 0 11 16 30 3 2 4 3 1 3 3 12 2 0 2 3 3 1 0 14 16 30 3 2 4 3 1 3 3 7 1 0 2 0 1 1 0 4 16 30 3 1 3 3 2 3 3 15 2 3 2...

Page 25: ...CRT SDI CRT SDI CRT TOSHIBA CRT 2 4 5 3 0 0 0 7 35 35 15 10 33 33 15 10 3 2 4 8 5 0 0 0 7 35 35 18 10 33 33 18 10 3 2 4 8 5 3 0 0 5 35 35 15 10 33 33 15 10 3 2 4 8 5 0 0 0 7 35 35 18 10 33 33 18 10 3...

Page 26: ...ON USA ON OFF ON OFF OFF ON ON OFF WIDE OFF OFF OFF OFF ON OFF CT EN SP FR OFF ON ON USA OFF OFF ON OFF ON ON OFF OFF WIDE ON OFF OFF ON ON OFF CT EN SP FR OFF ON ON USA OFF OFF ON OFF OFF ON ON OFF W...

Page 27: ...8 Screen Change I2C Bus Geometric Adjustment 12 Bow 4 V Linearity 5 Upper Linearity 11 H Trapezuim 3 H Shift 13 Angle 0 V Amp 9 Upper Coner 10 Low Coner 2 H EW 6 Low Linearity 7 V SC 8 H Parabola 15 C...

Page 28: ...4 16 Samsung Electronics MEMO...

Page 29: ...054A BRACKET CRATER STS304 T0 5 2 BRK 6 6002 000522 SCREW TAPPING TH 2 M4 L15 ZP 2 BKC CF 7 AA91 00507A ASSY HOLDER SPK 8OHM 15W ASSY HOLD 1 AHS 8 6006 001095 SCREW ASS Y TAPT WP BH M4 L12 ZPC YEL 4 A...

Page 30: ...F ASSY COVER P HOLDER AV ABS HB G4309 SV01 1 A CAV 2 AA96 01502A ASSY PCB P SIDE A V TXM2771HFX K55A 1 APAV 3 AA96 01509A ASSY PCB P CONTROL TXN2670WHF K55A 1 APC 3 1 6003 001019 SCREW TAPTITE RH B M4...

Page 31: ...IB660 600V 6A SIP 4 BK 4 6003 000335 SCREW TAPTITE RH 2S M3 L8 ZPC YEL SWR 4 AA60 30003A WASHER T1 5 SBHG 1 4 AA62 00052A HEAT SINK PS SILVER HOLE 18 5mm 2 3 HC801 BP96 00231A ASSY HEAT SINK P HS TR S...

Page 32: ...00OHM 5 1 8W AA TP 4 R204 2001 000281 R CARBON 100OHM 5 1 8W AA TP 4 R604 2001 000281 R CARBON 100OHM 5 1 8W AA TP 4 R605 2001 000281 R CARBON 100OHM 5 1 8W AA TP 4 R612 2001 000281 R CARBON 100OHM 5...

Page 33: ...ALFILM RM1 2T S 153 F15K 4 R422 2008 000251 R FUSIBLE S 0 27OHM 10 2W AF 4 R414 2008 000253 R FUSIBLE S 0 47OHM 5 1W AF 4 R815 2008 000284 R FUSIBLE S 0 1OHM 10 2W AF TP 3 9X10M 4 R827 2008 000284 R F...

Page 34: ...PG16V470M M SG VE 4 C810 2401 002463 C ELECTROLYTIC CE04WTAPG16V470M M SG VE 4 C811 2401 002463 C ELECTROLYTIC CE04WTAPG16V470M M SG VE 4 C414 2401 002597 C AL 220uF 20 35V GP TP 10x12 5 5 4 C418 2401...

Page 35: ...06 3812 000219 JUMPER WIRE SO COPPER TA0 6SN 52M M A 4 J815 3812 000219 JUMPER WIRE SO COPPER TA0 6SN 52M M A 4 J816 3812 000219 JUMPER WIRE SO COPPER TA0 6SN 52M M A 4 J817 3812 000219 JUMPER WIRE SO...

Page 36: ...LET ID2 0 OD2 8 BST 4 EY865 AA60 40011A EYELET ID2 0 OD2 8 BST 4 EY871 AA60 40011A EYELET ID2 0 OD2 8 BST 4 EY872 AA60 40011A EYELET ID2 0 OD2 8 BST 4 EL401 AA60 40011B EYELET ID2 2 OD3 2 BSP 4 EL402...

Page 37: ...ARBON S 68KOHM 5 1 2W AA 3 R506 2001 001194 R CARBON S 82KOHM 5 1 2W AA 3 R510 2001 001194 R CARBON S 82KOHM 5 1 2W AA 3 R511 2001 001194 R CARBON S 82KOHM 5 1 2W AA 3 R525 2002 001006 R COMPOSITION 4...

Page 38: ...TAPTITERWH B M3 L10 ZPC YEL 2 AHS CF 6006 001095 SCREW ASS Y TAPT WP BH M4 L12 ZPC YEL 2 CRT CF AA60 10050V SCREW ASSY WC HH M6 L30 SWRCH18A ZPC S 2 BRK AA61 10054A BRACKET CRATER STS304 T0 5 2 AHS A...

Page 39: ...INAL BOARD DP AA96 0141 2 INL TB AA64 03410C INLAY TERMINAL 29A10 PS SHEET T0 5 BLK ASSY P MATERIAL 1 A PMAT AA92 07643A ASSY P MATERIAL 29A10 2 BOX 0203 001295 TAPE OPP MASKING 1242 T0 06 W100 L91 4M...

Page 40: ...4P YBNH250 04 35184 3 CN703 AA39 20069A LEAD CONNECTOR ASSY YBNH025 3 CN701 AA39 20071H LEAD CONNECTOR K55A CT 29A10HR UL1007 26 2 APTS AA96 01503A ASSY PCB P TACT S W TXN2771HF K55A 3 DC01 0401 00000...

Page 41: ...0 30003A WASHER T1 5 SBHG 1 4 AA62 00052A HEAT SINK PS SILVER HOLE 18 5mm 2 3 HC801 BP96 00231A ASSY HEAT SINK P HS TR SCREW FML G12S 3 4 0205 001027 OIL SILICON G746 4 0402 000233 DIODE RECTIFIER FML...

Page 42: ...0OHM 5 1 8W AA TP 4 R940 2001 000281 R CARBON 100OHM 5 1 8W AA TP 4 R941 2001 000281 R CARBON 100OHM 5 1 8W AA TP 4 R942 2001 000281 R CARBON 100OHM 5 1 8W AA TP 4 R948 2001 000281 R CARBON 100OHM 5 1...

Page 43: ...R304 2008 001108 R FUSIBLE S 1 2ohm 5 2W AG TP 3 9x12mm 4 R307 2008 001108 R FUSIBLE S 1 2ohm 5 2W AG TP 3 9x12mm 4 R829 2008 001148 R FUSIBLE 3 3OHM 5 1W AG TP 3 9X12MM 4 C303 2201 000132 C CERAMIC...

Page 44: ...20 10V GP TP 8x20mm 5 4 CW901 2503 000156 C NETWORK 100pFx4 20 50V 4 L301 2701 000114 INDUCTOR AXIAL 10UH 10 2 5X3 4 L907 2701 000114 INDUCTOR AXIAL 10UH 10 2 5X3 4 L906 2701 000114 INDUCTOR AXIAL 10...

Page 45: ...52M M A 4 J824 3812 000219 JUMPER WIRE SO COPPER TA0 6SN 52M M A 4 J826 3812 000219 JUMPER WIRE SO COPPER TA0 6SN 52M M A 4 J827 3812 000219 JUMPER WIRE SO COPPER TA0 6SN 52M M A 4 J828 3812 000219 J...

Page 46: ...ELET ID2 2 OD3 2 BSP 4 GT102 AA60 40014A PIN GT ASSY 1P AUTO 4 GT301 AA60 40014A PIN GT ASSY 1P AUTO 4 GT302 AA60 40014A PIN GT ASSY 1P AUTO 4 GT401 AA60 40014A PIN GT ASSY 1P AUTO 4 GT402 AA60 40014A...

Page 47: ...5MM 3 CF07 2201 000604 C CERAMIC DISC 56PF 100 0 50 3 C504 2301 000016 C FILMPEF 22NF 5 100V TP 7 2X 3 C505 2301 000016 C FILMPEF 22NF 5 100V TP 7 2X 3 C506 2301 000016 C FILMPEF 22NF 5 100V TP 7 2X...

Page 48: ...A11 ABS HB G4309 SVM3012 3 CF AA64 03366A CABINET FRONT 28A11 HIPS V0 3 CMASK AA64 03368A CABINET MASK 28A11 HIPS V0 3 CWRF AA65 00011C CLAMP WIRE ALL MODEL NYLON 66 V2 NTR 25M 3 CWRF AA65 30105A CLAM...

Page 49: ...XAA 2 BOX 0203 001295 TAPE OPP MASKING 1242 T0 06 W100 L91 4M 2 STAPLE AA60 40006A PIN STAPLE H18 33X17 8X2 2 C SET AA69 02068A CUSHION SET 28A11 PS FOAMED C 0 02 2 PE BAG AA69 01209A BAG SHEET 25 27...

Page 50: ...6 20 Samsung Electronics MEMO...

Page 51: ...ormal Normal Abnormal Normal Abnormal Abnormal Abnormal Abnormal Normal Normal Normal Normal Check ST5V HC801 D809 Check ON OFF IC903 3 3V Check MICOM Check B 135V Check F BOX 5V 9V Check F BOX HD VD...

Page 52: ...ut signal of IC601 Check SPEAKER and WIRE Check FA803S Replace IC602 Check IC602 B Check TUNER B and SIF Check IC601 B Check the signals of pins 47 44 are input Check the signals of pins 25 24 are inp...

Page 53: ...al Abnomal Abnomal Abnomal Abnomal Abnomal Check the oscillation of X Tal of IC901 pins 34 35 Check Reset of IC901 pin 33 Check X901 IC904 Check Replace IC901 Check I2 C Check IC905 E2PROM Check TRANS...

Page 54: ...4 Horizontal Lines Appear Horizontal lines appear Nomal Nomal Abnomal Abnomal Abnomal Check IC301 B 16V 13 5V Check F BOX B VD VD Check Replace IC301 Check IC802 IC803 HC801 FA801S FA803S Replace R424...

Page 55: ...13 5V 434mA 404mA CPT Socket 19mA 78R05 IC802 7 9V 835mA 5V 210mA Main Tuner Sound Control IC Module Board 78RM33 IC202 5V 172mA 5V 183mA 5mA TDA7269 26 7V 17mA 78R09 12 36V 346mA 11 2V 212mA C2073 Ma...

Page 56: ...MEMO 8 2 Samsung Electronics...

Page 57: ...8 3 PCB Layout Samsung Electronics Block Diagrams 8 3...

Page 58: ...R09 78R05 78R33 YPbPr YC CVBS 135V 24V 12V 8V MICOM SDA555 EEPROM 24W16 Sound Process MSP34 Feature Box SDA9407905 CXA2151 CXA2165 BA7657F UPD64083 TEA6425 SRC D A A D Def PIP Matrix H Out TR FJL6920...

Page 59: ...8 5 Power Block Diagram Samsung Electronics Block Diagrams 8 5...

Page 60: ...SRAM PIP CX2165 RGB Matrix Deflection CXA2151 Sync Counter Comp SW R G B DVD DTV BA7657F S W H OUT V OUT Main UPD64083 3D Comb 29 34 TDA6111Q 32 TDA6120Q REF AMP CATHODE VM COIL CRT DRIVE Ik VM Main...

Page 61: ...9 40 16 41 42 25 24 49 MICOM SDA555 AUDIO OUT AUDIO PROCESSOR MSP34XX L O R O L O R O L I R I ANA IN AV RO AV LO AV L3 AV R3 AV L2 AV R2 AV L1 AV R1 TM BLOCK MUTE SIF R L SIDE A V 7 11 AUDIO AMP TDA72...

Page 62: ...Drive V N Drive 3 1 COMPARATOR KA393 FET G S D H DRIVE DDR1001A HDT H OUT TR FBT FUJ29 H PULSE SAW TOOTH 39 MICOM 5 2 7 PUMP UP INPUT V AMP LA7845 V1 V2 H1 H2 DY 1 V OUT 1 2 16 5VAC DOUBLE FOCUS MODUL...

Page 63: ...TP01 TP02 TP09 TP10 TP11 TP03 TP04 TP05 TP07 TP08 TP06 9 Schematic Diagrams Samsung Electronics Schematic Diagrams 9 1 9 1 MAIN 1 TP07 TP08 TP09 TP10 TP11 TP01 TP02 TP03 TP04 TP05 TP06...

Page 64: ...Schematic Diagrams 9 2 Samsung Electronics TP12 TP13 TP18 TP16 TP14 TP15 TP17 9 2 MAIN 2 TP18 TP12 TP13 TP14 TP15 TP16 TP17...

Page 65: ...Samsung Electronics Schematic Diagrams 9 3 9 3 MAIN 3 TP19 TP19...

Page 66: ...Schematic Diagrams 9 4 Samsung Electronics 9 4 MAIN 4 TP25 TP23 TP24 TP20 TP22 TP21 TP20 TP21 TP22 TP23 TP24 TP25...

Page 67: ...Samsung Electronics Schematic Diagrams 9 5 9 5 CRT VM TDA6120Q...

Page 68: ...Schematic Diagrams 9 6 Samsung Electronics 9 6 CRT VM TDA6120Q...

Page 69: ...Samsung Electronics Schematic Diagrams 9 7 9 7 WOOFER...

Page 70: ...Schematic Diagrams 9 8 Samsung Electronics 9 8 FEATURE BOX 1...

Page 71: ...Samsung Electronics Schematic Diagrams 9 9 9 9 FEATURE BOX 2...

Page 72: ...Schematic Diagrams 9 10 Samsung Electronics 9 10 FEATURE BOX 3...

Page 73: ...Samsung Electronics Schematic Diagrams 9 11 9 11 FEATURE BOX 4...

Page 74: ...Schematic Diagrams 9 12 Samsung Electronics 9 12 SIDE AV WOOFER JACK CONTROL WOOFER JACK SIDE AV CONTROL...

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