1. Precautions 1. Precautions 1-1. Safety Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1-1. Warnings For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing.
1. Precautions 1-2. Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
1. Precautions 1-4. Installation Precautions For safety reasons, more than two people are required for carrying the product. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.
2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model T220HD / T200HD Feature Supreme Digital Interface & Networking - With a built-in HD digital tuner, it supports HD broadcasting with no particular set-top box and provides simple access with a single remote control.
Remark Remote Control & BN59-00624A Batteries (AAA x 2) Power Cord 3903-000085 Stand Body BN96-07347B Stand Base BN96-07345A Samsung Electronics Service center D-Sub Cable BN39-00244G CBF SIGNAL-DVI(D) BN39-00246K User’s Guide, Monitor Driver, BN96-07540A Natural Color Pro Software Cleaning Cloth BN63-01798A...
3. Disassembly and Assembly 3. Disassembly and Assembly This section describes the disassembly and reassembly sequences for this monitor. Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them. 3-1. Disassembly Caution: 1. Turn the monitor off before beginning the disassembly process. 2.
Page 13
3. Disassembly and Assembly Description Photo Screws 3. Insert a flat screwdriver into the groove and then lift up and remove the cover. 4. After remove COVER-REAR, then disconnect SPEAKER , FUNCTION wire. 5. Disconnect LVDS cable from panel.
Page 14
3. Disassembly and Assembly Description Photo Screws 6. After disconnecting SHIELD-LAMP of left side, disassemble lamp wire between panel and IP Board. 7. Remove 8 marked SCREW of left picture. Disconnect IP board. Reassembly procedures are in the reverse order of disassembly procedures.
Page 15
3. Disassembly and Assembly Description Photo Screws 9. Remove the IR module by tilting the left snap to the right. 10. Remove the LED module by sliding the snap designated in the right figure backwards. 11. Remove the two (2) screws and then remove the holders from the four (4) snaps designated in the right figure using the provided jig.
Page 16
3. Disassembly and Assembly Description Photo Screws 12. Remove the two (2) connectors. Caution : Servicing is not supported for the PCB. 13. The assembly is in the reverse order of the disassembly. 14. Connect the disassembled snap and the LED module again.
4. Troubleshooting 4. Troubleshooting 4-1. First Checklist for Troubleshooting Check the various cable connections first. - Check to see if there is a burnt or damaged cable. - Check to see if there is a disconnected cable connection or a connection is too loose. - Check to see if the cables are connected according to the connection diagram.
4. Troubleshooting 4-2. No Power Symptom Though the power swtich on, the LED power off and the screen is blank. Check Power cable. Check whether the Lamp connector is connected correctly to the IP. Major checkpoints Check whether the power cable is connected correctly to the MAIN. Check whether the Function cable is connected correctly to the MAIN.
Page 20
4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on 1/10W R1301 PWM_DIMMING_OUT 0OHM CN1001 R1001_DE 4.7KOHM A13V 1:PWM 2:13V/0.65A 3:GND 4:GND 5:GND 6:5.1V/3.0A R1002 7:5.1V/3.0A R1031 8:A-DIMMING 0OHM 4.7KOHM 9:ON/OFF C1004 C1005 Q1005 KTC3875S-Y 100UF 100NF 6.3V CN_SMD_S_009 C1001_22 SW_INVERTER...
Does the digital data appear at the Check IC5002. output of RA5008~RA5012? Change a main PBA. Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace a lcd panel? Caution Make sure to disconnect the power before working on the IP board.
Page 22
4. Troubleshooting 4-3-1. Circuit diagrams and waveforms (Analog) when no screen is displayed on the monitor DSUB_INPUT BD3100 PC_BLUE BEAD_CHIP BD3101 PC_GREEN BEAD_CHIP DDC_VCC BD3102 PC_RED BEAD_CHIP DDC_VCC AT24C02N-10SC DDC_WP MGND2 IC3002 47OHM FGND FGND MODE,/WC R3027 R3025 47OHM R3026 A3.3V 22OHM 1/10W...
Page 23
4. Troubleshooting Analog PC 4-3-2. Waveforms when no screen is displayed (...
Does the digital data appear at Check the IC5002. output of IC5002? Change a main PBA. Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace lcd panel? Caution Make sure to disconnect the power before working on the IP board.
Page 25
4. Troubleshooting (Digital-HDMI) 4-4-1. Circuit diagrams and waveforms when no screen is displayed on the monitor HDMI_INPUT1 DDC_VCC DDC_WP AT24C02N-10SC R3010 HDMI1_5V IC3001 0OHM 1/10W MODE,/WC R3016 47OHM 1/10W R3017 47OHM 1/10W FGND FGND R3011 MGND5 10OHM 1/10W MGND2 R3009 R3012 IDENT_HDMI1 1KOHM...
Page 26
4. Troubleshooting Digital-HDMI 4-4-2. Waveforms when a blank screen is displayed (...
Check a IC5002. at output of RA5008 ~RA5012? Change a main PCB ass’y. Check a LVDS cable? Please, Call to Samsung Co. LTD. Replacea lcd panel? Caution Make sure to disconnect the power before working on the IP board. 4-10...
Page 28
4. Troubleshooting (Tuner_CVBS) 4-5-1. Circuit diagrams and waveforms when no screen is displayed on the monitor 4-11...
Page 29
4. Troubleshooting (Tuner_CVBS) 4-5-2. Waveforms when a blank screen is displayed 4-12...
Lamp on, No signal image. check antenna cable Change a main PBA Change a main PBA Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace lcd panel? Caution Make sure to disconnect the power before working on the IP board. 4-13...
Page 31
4. Troubleshooting (Tuner_DTV) 4-6-1. Circuit diagrams and waveforms when no screen is displayed on the monitor 4-14...
Page 32
4. Troubleshooting (Tuner_DTV) 4-6-2. Waveforms when a blank screen is displayed 4-15...
4. Troubleshooting 4-7. No Sound Symptom The LED power turns on but the screen is blank when the DVI cable is connected. Even though the LED power turns on, the screen is blank when connecting the DVI cable. Check the DVI cable connections. Major checkpoints Check whether the LVDS cable is connected correctly to the panel.
Page 34
4. Troubleshooting (No Sound) 4-7-1. Circuit diagrams and waveforms when no screen is displayed on the monitor VCOM0 AVDD_ADC CVBSOUT1 CVBSOUT0 SIF0P AVDD_SIF SIF1P FGND MDATA(0:15) FGND A3.3V RA5032 C5091 2.2NF R5074 22KOHM 1/10W C5094 2.2NF 1/10W R5076 22KOHM 1/16W 10KOHM C5100 2.2NF...
Page 35
4. Troubleshooting (No Sound) 4-7-1. Waveforms when a blank screen is displayed 4-18...
4. Troubleshooting 4-8. Faults and Corrective Actions Fault Photo Symptoms and Corrective Actions Remarks Symptoms: DVI signals are not recognized. * Refer to the Training Manual for information on inputting the DVI DDC. Causes: This fault occurs when the PC does not recognize the mode information because the DVI DDC has not been input to the monitor.
4. Troubleshooting 4-9. Adjustment 4-9-1. Service Instruction 1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. 2. Use the specified test equipment or its equivalent. 3. Correct impedance matching is essential. 4.
4. Troubleshooting 4-11. Service Adjustment 4-11-1. White Balance - Calibration If picture color is wrong, do calibration first. Equipment : CA210, Patten : chess pattern Execute calibration in Factory Mode Source AV : PAL composite, Component : 1280*720/60Hz PC : 1024*768/60Hz (Gray patten) 4-11-2.
Page 39
4. Troubleshooting 4-11-4. Method of Adjustment 1. Adjust the white balance of AV, Component and DVI Modes. (AV Component) a) Set the input to the mode in which the adjustment will be made. (RF DTV PC DVI). * Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16 - DTV,DVI Mode : Model #6 (1280*720 Mode), Pattern #16 - HDMI Mode: Model #6(1280*720 Mode), Pattern #16 b) Enter factory color control, confirm the data.
4. Troubleshooting 4-12. Software Upgrade 4-12-1. How to Update Flash ROM 1. Install the Flash Downloader Connector Set(D-SUB) and D-SUB cable to execute Program Update. 2. Flash Downloader program update - Turn on the TV Set - Click “Connect” icon on the MSTAR tool. - Click “Read”, and Choose a new S/W.
6. Wiring Diagram 6-3. Connector Functions Connector Functions Transmits LVDS signals from the Main board to the panel * When a problem occurs: The Blank Screen and No Power errors may occur. VGA signal input terminal * When a problem occurs: The No RGB Output error may occur. DVI signal input terminal * When a problem occurs: The No DVI Output error may occur.
7. Schematic Diagram 7-2. Block description HDMI1 HDMI2 T-MFM consists of three main blocks 1. Main board : Video signal processing 2. IP board : Power supply & Inverter 3. T-con board : LCD Panel control...