TFT-LCD TV/MONITOR Chassis Model VA22SO LA22N21B 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.
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This Service Manual is a property of Printed in Korea Samsung Electronics Co., Ltd. P/N : BN82-00103W-00 Any unauthorized use of Manual can be http : //www.samsungmonitor.com (SyncMaster Worldwide) punished under applicable International http : //www.samsung-monitor.com (SyncMaster USA) and/or domestic law. URL : http://itself.sec.samsung.co.kr/...
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. LA22N21B...
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ESDs. Motions such as brushing clothes solder removal devices not classified as “anti-static” can together, or lifting your foot from a carpeted floor can generate electrical charges sufficient to damage ESDs. generate enough static electricity to damage an ESD. LA22N21B...
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 LA22N21B...
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DVI-I Receptacle Connector Front View Signal Assignment Signal Assignment Signal Assignment RX2- RX2+ RXC+ RXC- DDC Input Power(+5V) Analog Red IDENT_PC Analog Green DDC Clock (SCL) RX0- DDC Data (SDA) Analog Blue RX0+ Analog Horizontal Sync. Analog Vertical Sync. RX1- RX1+ LA22N21B...
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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 LA22N21B...
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2 Product Specifications 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 LA22N21B...
3 Disassembly and Reassembly 3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LA22N21B monitor. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions : 1.
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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. LA22N21B...
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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. LA22N21B...
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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 West Europe LA22N21B...
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FIX[0~255] Blue Gain ADJ[0~255] TT X Brigh t FIX[0~100] [PC Contrast] [W/B] RF/AV Component DVI-D DVI-A D-TV Sub-Brightness ADJ[0~255] Red Offset ADJ[0~255] Green Offset FIX[0~255] Blue Offset ADJ[0~255] Sub-Contrast Fix[0~255] Red Gain ADJ[0~255] Green Gain FIX[0~255] Blue Gain ADJ[0~255] LA22N21B...
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4 Alignments and Adjustments Dithering LA22N21B...
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4 Alignments and Adjustments CSC_OFFSET_Y CSC_OFFSET_CB CSC_OFFSET_CR LA22N21B...
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4 Alignments and Adjustments * Unless otherwise specifid, do not adjust data in Factory Mode. * Data may be changed for display improvement. LA22N21B...
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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 RF/AV/COMPONENT Table 4-2. Color Control Default Vlaue Table 4-3. Color Control Default Vlaue LA22N21B...
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Set the input to the mode in which the adjustment will be made (RF PC). * Input signal - VIDEO Mode : Model #1 (750*480 Mode), Pattern #16 - PC Mode : Model #21 (1024*768 Mode), Pattern #16 b) Enter factory color control, confirm the data. 4-10 LA22N21B...
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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 LA22N21B 4-11...
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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 LA22N21B...
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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. LA22N21B 4-13...
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(Varies depending on program update) 4-3-11 Reset * Initializes the data in the MICOM. (Set to default value) Use ‘Reset’ to restore adjustmints made in Factory Mode to the original settings. 4-3-12 T_VIC22PEU_0908 02/05/2004 16:04:38 * Displays the MICOM program version 4-14 LA22N21B...
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3. After completing the JIG Cable connection, store Update practice program (hex file 3EA) in new folder. (guiR, romcode, factoryGui). 4. Click FlashupgradNT.exe icon 2 times and execute it. (Upgrader OSD screen is marked) Picture 4-4 5. Select OFull.inf in Flash. (flaher, romcode, guir, factorygui items look in Files To) Picture 4-5 LA22N21B 4-15...
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(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 LA22N21B...
+2.5V_MD2, 8V, 8V_3D , SNI_1.8V Change a main PCB ass'y. appear at C613, C437, C463, (BN94-00496X) C477,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) LA22N21B...
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RA402~RA407? (BN94-00496X). Does the digital data Check a IC503. appear at output of Change a main PCB ass'y FT501~FT503, FT505? (BN94-00496X). Check a LVDS cable? Replace a lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LA22N21B...
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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 LA22N21B...
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RA402~RA407? (BN94-00496X). Does the digital data appear at Check a IC503. output of FT501~FT503, Change a main PCB ass'y FT505 ? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LA22N21B...
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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 LA22N21B...
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Change a main PCB ass'y 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) LA22N21B...
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5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Tuner_CVBS Output Signal LA22N21B...
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5 Troubleshooting 5 Troubleshooting 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 LA22N21B...
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RA402~RA407? (BN94-00496X). Does the digital data appear at Check a IC503. output of FT501~FT503, Change a main PCB ass'y FT505 ? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LA22N21B...
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5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Tuner_CVBS Output Signal 5-10 LA22N21B...
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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 LA22N21B 5-11...
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Output of RA402~RA407? (BN94-00496X). Does the digital data appear at Check a IC503. Output of Change a main PCB ass'y FT501~FT503, FT505? (BN94-00496X). Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN0700125A) 5-12 LA22N21B...
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5 Troubleshooting WAVEFORMS Output Digital Signal of IC565 Output Digital Signal of IC403 Digital Output Data of IC503 Analog Signal (Y,C) to IC201 LA22N21B 5-13...
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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 LA22N21B...
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RA402~RA407? (BN94-00496X). Check a IC503. Does the digital data appear at Change a main PCB ass'y output of FT501~FT503, (BN94-00496X). FT505 ? Check a LVDS cable? Replacea lcd panel? Please, Call to Samsung Co. LTD. (BN07-00114A, BN07-00125A) LA22N21B 5-15...
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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 LA22N21B...
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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)) LA22N21B 5-17...
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5 Troubleshooting WAVEFORMS The Signal are Inputed to IC703 DC +8V Output WaveForm 5-18 LA22N21B...
6 Exploded View & Parts List 6 Exploded View and Parts List You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ LA22N21B...
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6 Exploded View & Parts List Memo LA22N21B...
7 Electrical Parts List 7 Electrical Parts List You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 7-1 LA22N21BX/SAP Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LA22N21BX/SAP LA22N21B,VA22S,22,LCD-TV,SINGAPORE M0216 BN90-00486L ASSY STAND;VR22UO S.N.A...
11 Schematic Diagrams 11 Schematic Diagrams This Document can not be used without Samsung’s authorization. 11-1 VIDEO DECORDER ADC, SWITCH Schematic Diagram 3.3V R,G,B Output Signal (#15,19,21) Of MDIN150I(0:15) BD201 BLM41P600S C202 C203 C201 FT101 68nF 68nF 100uF SGM32F1E104-2A C191 10uF PLL_3.3V...
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11 Schematic Diagrams This Document can not be used without Samsung’s authorization. 11-2 DVE, DNI 3D Comb Schematic Diagram 3.3V 3.3V Output Digital Signal of IC403 FT401 FT402 SGM32F1E104-2A SGM32F1E104-2A RA308 IPDATACH1A(0:23) IPDATACH1A(7) IPDATACH1A(6) R300 IPCLKCH1 IPDATACH1A(5) IPDATACH1A(4) A3.3V C401...
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11 Schematic Diagrams This Document can not be used without Samsung’s authorization. 11-3 PW565_Scaler LVDS, Video_Memory, Flash_Memory Schematic Diagram Output Digital Signal of IC565 3.3V A3.3V FSADDR(11) FSADDR(11) FSADDR(12) FSADDR(12) FSADDR(10) FSADDR(10) A3.3V FSADDR(0) FSADDR(0) C503 FSADDR(1) FSADDR(1) 100uF C510...
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11 Schematic Diagrams This Document can not be used without Samsung’s authorization. 11-4 CAPTION, TTX DEINTERLACER, SUB_MICOM Schematic Diagram Di g i t al Output Y,C_OUT (0:7) Data Of IC405 3.3V +3.3V_MD C914 C913 100nF FT406 100uF SGM32F1E104-2A MCAD(0:7) MCAD(0:7)