Related Manuals for Samsung LTM295W
Summary of Contents for Samsung LTM295W
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Page 1: Table Of Contents
CONFIDENTIAL LCD-TV Chassis Model AL29NO LTM295W AL40NO LTM405W SERVICE Manual LCD-TV CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignment & Adjustments 5. Troubleshooting 6. Exploded View & Parts List 7. Electrical Parts List 8. Block Diagram 9. -
Page 2: Precautions
A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire and / or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate. LTM295W/LTM405W... -
Page 3: Servicing Precautions
Use only an anti-static solder removal device. Some brushing clothes together, or lifting your foot from solder removal devices not classified as “anti-static” a carpeted floor can generate enough static can generate electrical charges sufficient to damage electricity to damage an ESD. ESDs. LTM295W/LTM405W... -
Page 4: Product Specifications
•Output frequency : RFc 80 Hz~15 KHz Vc 80 Hz~20 KHz •Line out : RFc 80 Hz~15 KHz Vc 80 Hz~20 KHz •SyncMaster LTM295W/LTM405W comply with SWEDAC (MPRII) recommendations for reduced electromagnetic fields. •Designs and specifications are subject to change without prior notice. LTM295W/LTM405W... -
Page 5: Pin Assignments
CONFIDENTIAL 2-2 Pin Assignments Pin No. Pin No. 30 Pin Signal Cable (DVI Analog) 30 Pin Signal Cable (DVI Analog) RX2+ RX2- Check D-Sub • RX1+ DDC_5V RX1- DDC_5V RX0+ V/Sync RX0- H/Sync RXC+ RXC- Blue DDC (Clock) Green DDC (Data) -
Page 6: Timing Chart
B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch LTM295W/LTM405W... - Page 7 B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch LTM295W/LTM405W...
- Page 8 B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch LTM295W/LTM405W...
- Page 9 B : Horizontal sync width O : Frame time total P : Vertical sync width C : Back porch D : Active time Q : Back porch R : Active time E : Front porch S : Front porch LTM295W/LTM405W...
- Page 10 CONFIDENTIAL 2 Product Specifications 2-4 DTV Timing Chart Table 2-5 DTV Timing chart LTM295W/LTM405W...
- Page 11 CONFIDENTIAL 2 Product Specifications Memo LTM295W/LTM405W...
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Page 12: Disassembly & Reassembly
CONFIDENTIAL 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LTM295W/LTM405W 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. - Page 13 CONFIDENTIAL 3 Disassembly and Reassembly 3. Remove 4 screws of the cover rear. Pull the cover rear. 3-2 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures. LTM295W/LTM405W...
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Page 14: Alignment & Adjustments
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts. 7. To protect aganist shock hazard,use an isolation transform. LTM295W/LTM405W... - Page 15 CONFIDENTIAL 4 Alignments and Adjustments Memo LTM295W/LTM405W...
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Page 16: Troubleshooting
Check IC953, IC954, IC956 and IC957 . appear at Pin 2 of IC953, IC954, IC956 and IC957? Does proper DC 2.5 V appear at Check IC961 and IC964. Pin 2 of IC961 and IC964? Check IC963, IC906 and IC905. LTM295W/LTM405W... - Page 17 Does the clock pulse appear at Check IC302 and related circuit. Pin 6, 13 and Pin 69, 70 of IC302? Does the colck pluse appear at R812, R813 and Check related circuit of IC801. H/V Sync pulse of IC801? Replace LCD Panel. LTM295W/LTM405W...
- Page 18 Check CN201 and related circuit. Check Pin 66 and 67 of CN203. Check IC203 and related circuit. Does the colck pluse appear at R619, R621 and Check IC603 and related circuit. H/V Sync pulse of IC603? IC901 and IC903 and replace it. LTM295W/LTM405W...
- Page 19 57 and 67 of IC503? Check Pin 10 and 13 of IC504? Check IC504 and related circuit Q501. Does the signal appear at Replace L502, L503, L504 and L505. L502, L503, L504 and L505? 29”:Check Speaker and CN2. 40”:Check Speaker and CN2. LTM295W/LTM405W...
- Page 20 Dose the signal appear at Check IC403 and related circuit. Pin 15, 19 and 21 of IC403? Dose the signal appear at Check IC404 and related circuit. Pin 43, 48 and 54 of IC404? Check IC801 and related circuit. LTM295W/LTM405W...
- Page 21 CONFIDENTIAL 5 Troubleshooting Memo LTM295W/LTM405W...
- Page 22 CONFIDENTIAL 6 Exploded View and Parts List 6-1 LTM295W LTM295W/LTM405W...
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Page 23: Exploded View & Parts List
CONFIDENTIAL 6 Exploded View & Parts List 6-2 LTM405W LTM295W/LTM405W... -
Page 65: Block Diagram
CONFIDENTIAL 8 Block Diagram LTM295W/LTM405W... - Page 66 CONFIDENTIAL 8 Block Diagrams Memo LTM295W/LTM405W...
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Page 67: Wiring Diagram
CONFIDENTIAL 9 Wiring Diagram CN901 CN952 CN951 CN903 BL_EN CN954 CN902 TXOUT0+ TXOUT0- TXOUT3+ TXOUT3- TXCLKOUT+ TXCLKOUT- TXOUT3+ TXOUT2+ TXOUT3- TXOUT2- TXCLKOUT+ CN953 TXOUT1+ TXCLKOUT- TXOUT1- TXOUT2+ TXOUT0+ TXOUT2- TXOUT0- TXOUT1+ TXOUT1- CN950 CN201 CN601 CN501 LTM295W/LTM405W... - Page 68 CONFIDENTIAL 9 Schematic Diagrams Memo LTM295W/LTM405W...
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Page 69: Schematic Diagrams
VID_DATA VID_ONB DTV_HSYNC DTV_HSYNC DTV_DCLK DTV_DCLK DTV_Y(0:7) DTV_Y(0:7) DTV_PB(0:7) DTV_PB(0:7) AV_IN DTV_FIELD DTV_FIELD DTV_DATA DTV_DATA DTV_SCLK DTV_SCLK MSP_INT QSS_IF1 QSS_IF1 QSS_IF2 QSS_IF2 COM1_L COM1_L AUDIO COM1_R COM1_R COM2_L COM2_L COM2_R COM2_R A_ST_BY RCA_L RCA_L DTV_SCLK RCA_R RCA_R DTV_DATA LTM295W/LTM405W 10-1... - Page 70 A I N MCWRn B I N PAGE00 MCWRn1 MCA(2) MCA(5) PAGE01 C I N MCRDn D I N MCAD(2) MCAD(5) E I N J1RDn F I N MCAD(3) MCAD(4) G I N J2RDn J1WRn MCA(3) MCA(4) J2WRn MCALE 10-2 LTM295W/LTM405W...
- Page 71 CONFIDENTIAL 10 Schematic Diagrams IC103 #20 CH1 RMS = 540V LTM295W/LTM405W 10-3...
- Page 72 RA211 RA212 ZD208 D_VSYNC R252 D_DE C255 C259 R253 D_CLK 100nF 100uF C260 C261 C262 C263 C264 C265 C266 C267 C268 C269 10uF 100nF 100nF 100nF 100nF 100nF C270 C271 C272 C273 15pF 15pF 15pF 15pF PAR(0:7) DELETE 10-4 LTM295W/LTM405W...
- Page 73 CONFIDENTIAL 10 Schematic Diagrams IC201 #22 IC201 #24 IC203 #67 IC203 #66 CH1 RMS = 3.80V CH1 RMS = 4.12V CH1 RMS =2.92V CH1 RMS = 3.32V LTM295W/LTM405W 10-5...
- Page 74 IN A R653 VSS37 IN B A_ST_BY AC22 DPMSLED1 R660 VSS38 IN C LED_RED AC17 R652 VSS39 LED_GREEN IN D AC11 VSS40 IN E AF19 VSS41 AF13 C678 VSS42 IN G 100nF SD(0:63) R654 4.7K 1/16W C679 0.01nF TSA(0:10) 10-6 LTM295W/LTM405W...
- Page 75 CONFIDENTIAL 10 Schematic Diagrams IC603 #613 CH1 RMS = 3.96V LTM295W/LTM405W 10-7...
- Page 76 VSSQ4 VDDQ5 VSSQ4 VDDQ5 JSD(21) JSD(26) JSD(53) JSD(58) DQ21 DQ26 DQ21 DQ26 JSD(22) JSD(25) JSD(54) JSD(57) DQ22 DQ25 DQ22 DQ25 VDDQ4 VSSQ5 VDDQ4 VSSQ5 JSD(23) JSD(24) JSD(55) JSD(56) DQ23 DQ24 DQ23 DQ24 VDD4 VSS1 VDD4 VSS1 JTSA(0:10) JTSA(0:10) 10-8 LTM295W/LTM405W...
- Page 77 CONFIDENTIAL 10 Schematic Diagrams IC801 #R815 CH1 RMS = 3.96V LTM295W/LTM405W 10-9...
- Page 78 C923 C924 C925 C926 C927 C928 EXTVCC 82uF 82uF 82uF 82uF 82uF 10uF D902 D903 MBRS340T3 MBRS340T3 C929 C930 100nF 4700nF 0404-001055 0404-001055 R938 R939 R940 C931 1.000 162KOhm 100nF C932 2.2nF R941 1.000 R942 BD905 BLM41P600S 1/16W 10-10 LTM295W/LTM405W...
- Page 79 TP344 SD(19) SD(28) DQ19 DQ28 TP337 TP345 SD(20) SD(27) DQ20 DQ27 VSSQ4 VDDQ5 SD(21) TP338 TP346 SD(26) DQ21 DQ26 SD(22) TP339 TP347 SD(25) DQ22 DQ25 VDDQ4 VSSQ5 TP340 TP348 SD(23) SD(24) DQ23 DQ24 VDD4 VSS1 SA(0:12) SA(0:12) SD(0:31) LTM295W/LTM405W 10-11...
- Page 80 C455 74LVX74MTCX 100nF IC406 A I N FST3257MX B I N C I N U320 TP247 DTV_SCLK D I N DTV_VSYNC VID_ONB E I N TP244 F I N DTV_FIELD MC_SCLK TP245 G I N DTV_DATA TP246 MC_DATA 10-12 LTM295W/LTM405W...
- Page 81 CONFIDENTIAL 10 Schematic Diagrams IC404 #48 IC404 #67 CH1 RMS =3.40V CH1 RMS = 3.48V LTM295W/LTM405W 10-13...
- Page 82 SCR1 PC_AR SCR3 COM1_R R543 R544 C582 C583 330PF 330PF C584 C585 4.7uF 4.7uF SCL2 COM2_L SCL4 RCA_L C586 R545 C587 R546 330PF 330PF C588 C589 4.7uF 4.7uF SCR2 SCR4 COM2_R RCA_R R547 R548 C590 C591 330PF 330PF 10-14 LTM295W/LTM405W...
- Page 83 CONFIDENTIAL 10 Schematic Diagrams IC503 #28 IC503 #67 LTM295W/LTM405W 10-15...
- Page 84 VID_SCLK U1095 WAIR_CVBS VID_DATA QSS_IF1 1.8K 2SC2412K-Q 2SC2412K-Q 1/16W 1/16W U1096 QSS_IF2 WAIR_A_L 47uF CVBS_A CVBS1 KSA1182 1/16W U1097 CVBS2 WAIR_A_R 5.6K H354LAI-K5202=P3 slcon22p_1 1/16W 1/16W 1/16W 1/16W 1/16W WAIR_SEL 10uF BZX84C5V1 BZX84C5V1 100pF 100pF 100nF 100uF slcon14p 10-16 LTM295W/LTM405W...
- Page 85 CONFIDENTIAL 10 Schematic Diagrams CN1 #1 LTM295W/LTM405W 10-17...
- Page 86 100K 10nF 100nF R980 10uF 10uF DECPW IC965 R981 Q954 1/16W LM2596S-12 4.7K 2SC2412K-Q C998 R983 100K R982 BD973 BLM41P600S BD974 BLM41P600S R984 U900 U905 R985 R986 BD975 BLM41P600S 100K MAINPW BD976 BLM41P600S MSPPW Q955 Q956 2SC2412K-Q 2SC2412K-Q 10-18 LTM295W/LTM405W...
- Page 87 CONFIDENTIAL 10 Schematic Diagrams IC905 #2 CH1 RMS =14.1V LTM295W/LTM405W 10-19...
- Page 88 VSP_B GND4 BLUEOUT C362 C363 100nF C367 R373 BLUE2IN R374 VDOUT R375 C368 100uF C369 C370 C371 C372 4.7K 10nF 10nF 10nF 10nF 10uF 1/16W 47uF 47uF 47uF VD1IN VD2IN C373 C374 C375 C376 100nF R376 R377 R378 10-20 LTM295W/LTM405W...
- Page 89 Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea. Printed in Korea P/N : BN82-00081D-00 http://www.samsungsupport...