Page 1: Table Of Contents
TFT-LCD TV/MONITOR Chassis Model VR22UO LTP227W SERVICE Manual TFT-LCD TV/MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignment & Adjustments 5. Troubleshooting 6. Exploded View & Parts List 7. Parts List 8. Block Diagram 9. Wiring Diagram 10.
Page 2 Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Kyungki-Do, Korea, 442-742 Printed in Korea ❈ This Service Manual is a property of Samsung P/N : BN82-00103E-00 Electronics Co., Ltd. http : //www.samsungmonitor.com (SyncMaster Worldwide) Any unauthorized use of Manual can be punished http : //www.samsung-monitor.com (SyncMaster USA)
Page 3: 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. LTP227W...
Page 4 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. LTP227W...
Page 5: Product Specifications
Sound Characteristic – BASS Control Range : -8 dB ~ + 8dB – TREBLE Control Range : -8 dB ~ +8 dB – Headphone Out : 5 mW max (400 m Vrms) – Output Frequency : 20 Hz ~15.2 Hz LTP227W...
Page 6 Pin No. Pin No. Signal Assignment Signal Assignment Signal Assignment RX2- RX2+ RXC+ RXC- DDC Input Power(+5V) Analog Red IDENT_PC DDC Clock (SCL) Analog Green RX0- DDC Data (SDA) Analog Blue RX0+ Analog Vertical Sync. Analog Horizontal Sync. RX1- RX1+ LTP227W...
Page 7 2 Product Specifications 2-2-2 Component 1, 2 2-2-3 S-Video Separate RCA Green Pb (Cb) RCA Blue Pr (Cr) RCA Red Audio L RCA White Audio R RCA Red 2-2-4 A/V RCA Yellow CVBS Audio L RCA White Audio R RCA Red LTP227W...
Page 8 2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. 2-3-1 LCD Panel Mode1 mode LTP227W...
Page 9 2 Product Specifications 2-3-1 Supported Modes (1) LTP227W...
Page 10 2 Product Specifications 2-3-1 Supported Modes (2) LTP227W...
Page 11 2 Product Specifications 2-3-1 Supported Modes (3) LTP227W...
Page 12 2 Product Specifications Memo LTP227W...
Page 13: Disassembly & Reassembly
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LTP227W 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 14 Victoria LTA170WP_L01 panel, the lamp is firmly soldered inside of the back panel. Therefore,servicing the lamp may cause a defective panel.Also,servicing lamp requires front glass removal, which may cause scratch and/or foreign materials on the glass.) 3-3 Reassembly Reassembly procedures are in the reverse order of dissasembly procedures. LTP227W...
Page 15 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. LTP227W...
Page 16 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 -, Menu, TV/VIDEO(Enter) 4-2-2 Factory Mode Tree LTP227W...
Page 17 4 Alignments and Adjustments LTP227W...
Page 18 4 Alignments and Adjustments LTP227W...
Page 19 4 Alignments and Adjustments LTP227W...
Page 20 4 Alignments and Adjustments LTP227W...
Page 21 4 Alignments and Adjustments LTP227W...
Page 22 4 Alignments and Adjustments * Unless otherwise specifid, do not adjust data in Factory Mode. * Data may be changed for display improvement. LTP227W...
Page 23 4. As the RF mode is applied with the same vlaues as for VIDEO and S-VIDEO, adjustment can be made in any of RF, VIDEO and S-VIDEO modes. Table 4-1. White Balance Setting Conditions Table 4-2. Color Control Default Vlaue Table 4-3. Color Control Default Vlaue LTP227W...
Page 24 * Pattern NO 36 : 16 Color Pattern NO 16 : Toshiba ABL Pattern 2. Optical measuring device : CA210 (FL) Please use the MSPG-925 LTH generator for model LTP227W. 4-3-2 Method of Adjustment 1. Adjust the basic level of DTV and PC input signals.
Page 25 Adjust the high light. (Refer to table 1, 2 in adjustment position by mode) - Adjust red gain ('x') and blue gain ('y') to the color coordinates. * Do not adjust the green gain and sub-contrast (Y) data. Picture 4-3 Toshiba ABL Pattern High light Measurement point LTP227W 4-11...
Page 26 4 Alignments and Adjustments 4-3-3 Option Table * The default settings are most recommended for Option Data. Each data may be adjusted. 4-3-4 PW565 * Below figures are for contrast adjustment of PW565 (IC565). Do not change the data. 4-12 LTP227W...
Page 27 4 Alignments and Adjustments 4-3-5 VPC 3230-MAIN * Data may be adjusted. 4-3-6 ADC *Adjust the R(Pr), G(Y), B(Pb) gain and offset to the basic level of DTV and PC Input signals. LTP227W 4-13...
Page 28 (Varies depending on program update) 4-3-12 Reset * Initializes the data in the MICOM. (Set to default value) Use ‘Reset’ to restore adjustmints made in Factory Mode to the original settings. 4-3-13 T_VIC22NUS_0166 11/27/2003 20:10:51 * Displays the MICOM program version 4-14 LTP227W...
Page 29 4 Alignments and Adjustments 4-4 How to use SW(FlashupgradNT) for LTP227W Set program update 1. Store program practice file in new folder. 2. Connect Set and Jig Cable to execute Program Update. (Refer to the Picture 4-4 attachment) 3. After completing the JIG Cable connection, store Update practice program (hex file 3EA) in new folder.
Page 30 (Connect only when you want to see PC screen.) 2. Connect with JIG Output (15 pins) and PC Input (PC/DVI 24 pins) terminal. 3. Connect with COM Port1 of PC (9 Pins). 4. Connect 14V 4.5A Adaptor Cable. 4-16 LTP227W...
Page 31: Troubleshooting
+2.5V_MD2, 8V, 8V_3D , SNI_1.8V Change a main PCB ass'y. appear at C613, C437, C463, C477, (BN94-00496X) C484, C664, C666, C453? Check a other function. (No picture part) A power is supplied to set? Replace a lcd panel. (BN07-00125A, BN07-00114A) LTP227W...
Page 32 RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y output of FT501~FT503, FT505? (BN94-00496X). Check a LVDS cable? Replace a lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LTP227W...
Page 33 5 Troubleshooting WAVEFORMS R,G,B Output Signal (#15,19,21) Of IC102 R,G,B Output Signal Of IC101 Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 LTP227W...
Page 34 RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y output of FT501~FT503, FT505 ? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LTP227W...
Page 35 5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Signal of DVI_RX 0~2 (Data) Signal of DVI_RXC (CLK) Digital Output Signal Of IC301 LTP227W...
Page 36 RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y output of FT501~FT503, FT505 ? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LTP227W...
Page 37 5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Tuner_CVBS Output Signal LTP227W...
Page 38 5 Troubleshooting WAVEFORMS Analog Signal (Y,C) to IC201 3230 Y,C_OUT (0:7) Data Digital Output Y,C_OUT (0:7) Data Of IC405 LTP227W...
Page 39 RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y output of FT501~FT503, FT505 ? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LTP227W...
Page 40 5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Tuner_CVBS Output Signal 5-10 LTP227W...
Page 41 5 Troubleshooting WAVEFORMS Analog Signal (Y,C) to IC201 3230 Y,C_OUT (0:7) Data Digital Output Y,C_OUT (0:7) Data Of IC405 LTP227W 5-11...
Page 42 Output of RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y Output of FT501~FT503, FT505? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) 5-12 LTP227W...
Page 43 5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Analog Signal (Y,C) to IC201 LTP227W 5-13...
Page 44 5 Troubleshooting WAVEFORMS 3230 Y,C_OUT (0:7) Data Digital Output Y,C_OUT (0:7) Data Of IC405 SVHS_Y,C Input Signal to IC202 5-14 LTP227W...
Page 45 RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y output of FT501~FT503, FT505 ? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LTP227W 5-15...
Page 46 5 Troubleshooting WAVEFORMS R,G,B Output Signal Of IC101 Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Output Signal of IC103 (Y,Pb,Pr) Input Signal (Y,Pb,Pr) to IC102 5-16 LTP227W...
Page 47 Check the DC +8V, +9V, +5V Change a main PCB ass'y of IC703, IC701? (BN94-00496X). Check a IC701. Does the signal appear at Change a main PCB ass'y L701 ~L704 ? (BN94-00496X). Replace the speaker ass'y? (BN96-00714A(L), BN96-00716(R)) LTP227W 5-17...
Page 48 5 Troubleshooting WAVEFORMS The Signal are Inputed to IC703 DC +8V Output WaveForm 5-18 LTP227W...
Page 49 6 Exploded View and Parts List ❈ You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ LTP227W...
Page 50: Exploded View & Parts List
6 Exploded View & Parts List Memo LTP227W...
Page 51: Parts List
7 Parts List ❈ You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 7-1 Part Lists Description Code No. ASSY PCB MAIN BN94 - 00496X ASSY COVER FRONT BN90 - 00620A ASSY COVER REAR BN90 - 00540A...
Page 52 7 Parts List Memo LTP227W...
Page 53: Block Diagram
8 Block Diagram ❈ This Document can not be used without Samsung’s authorization. LTP227W...
Page 54 8 Block Diagrams Memo LTP227W...
Page 55: Pcb Layout
10 PCB Layout 10-1 Main PCB Layout LTP227W 10-1...
Page 56 54.5 55.4 IC903 IC MICOM 226.2 57.2 Q903 TR-SMALL SIGNAL 148.7 111.4 D838 DIODE-ZENER 135.6 25.1 D839 DIODE-ZENER 131.3 25.1 IC103 IC-VIDEO SWITCH 107.9 69.2 IC904 IC-VOL. DETECTOR 208.6 66.0 IC907 IC-DECODER 166.1 120.6 D841 DIODE-ZENER 150.2 25.9 10-2 LTP227W...
Page 57 KEY1 CN804 POWER_KEY CH+_OUT CH-_OUT SOURCE_OUT CN505 IDENT_HP CN803 HP_L HP_R ADJ_BRIGHT PC_AUDIO_L SW_INVERTER CN601 PC_AUDIO_R S_VHS_C S_VHS_Y VIDEO_CVBS VIDEO_L VIDEO_R LED_GRN CN806 LED_RED A3.3V CN809 SPKOUT R+ CN701 SPKOUT R- CN808 CN801 CN802 SPKOUT L+ CN702 SPKOUT L- LTP227W...
Page 58 9 Wiring Diagrams Memo LTP227W...
Page 59: Schematic Diagrams
11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-1 Schematic Diagram FT101 SGM32F1E104-2A C191 10uF PLL_3.3V 3.3V IC104 ADP3330ART-3.3 C192 BD201 MDIN150I(0:15) C193 R191 R192 BLM41P600S L201 100uF 3.3UH 100nF 100K 330K C272 C271 100nF...
Page 60 11 Schematic Diagrams R,G,B Output Signal (#15,19,21) Of IC102 R,G,B Output Signal Of IC101 Tuner_CVBS Output Signal Analog Signal (Y,C) to IC201 3230 Y,C_OUT (0:7) Data Output Signal of IC103 (Y,Pb,Pr) Input Signal (Y,Pb,Pr) to IC102 11-2 LTP227W...
Page 61 11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-2 Schematic Diagram 3.3V 3.3V FT401 FT402 SGM32F1E104-2A SGM32F1E104-2A RA308 IPDATACH1A(0:23) IPDATACH1A(7) IPDATACH1A(6) IPCLKCH1 R300 IPDATACH1A(5) A3.3V IPDATACH1A(4) C401 C402 C403 C404 C405 C406 C407 C408 C409...
Page 62 11 Schematic Diagrams Output Digital Signal of IC403 Signal of DVI_RX 0~2 (Data) Digital Output Signal Of IC301 SVHS_Y,C Input Signal to IC202 11-4 LTP227W...
Page 63 11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-3 Schematic Diagram 3.3V A3.3V C503 100uF BD517 SGM32F1E104-2A FSADDR(11) FSADDR(11) C504 FSADDR(12) FSADDR(12) TP503 FSADDR(10) FSADDR(10) R501 R502 FSADDR(0) C505 FSADDR(0) 2.2K 2.2K 100uF FSADDR(1) FSADDR(1)
Page 64 11 Schematic Diagrams Output Digital Signal of IC565 Digital Output Data of IC503 11-6 LTP227W...
Page 65 11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-4 Schematic Diagram MCAD(0:7) MCAD(0:7) 3.3V +3.3V_MD MCA(0:19) MCA(0:19) FT406 SGM32F1E104-2A 3.3V C463 C464 C465 C466 C467 C468 C469 C471 C472 C473 C474 C475 C476 C045 C046...
Page 66 11 Schematic Diagrams Digital Output Y,C_OUT (0:7) Data Of IC405 11-8 LTP227W...
Page 67 11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-5 Schematic Diagram CN701 slcon5p SW_POWER_1 TP601 SUPLVAL TP701 TP702 L708 TP602 TP628 TP623 C601 SUPLVAL SUPLVAL TP603 INSTPAR 10nF L602 SUPLVAL BD601 C602 C603 C604 BLM41P600S...
Page 68 11 Schematic Diagrams The Signal are Inputed to IC703 DC +8V Output WaveForm 11-10 LTP227W...
Page 69 11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-6 Schematic Diagram BD805 BLM41P600S COMPONENT_1,2_VIDEO_INPUT FT803 SGM32F1E104-2A TUNERGND C845 C846 470uF 100nF D801 D803 D822 D824 CN808 RLZ8.2 RLZ8.2 RLZ8.2 RLZ8.2 MGND1 MGND2 L902 TUNERGND 3.3UH...
Page 70 11 Schematic Diagrams Memo 11-12 LTP227W...

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