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LCD-TV Chassis : GAM32MUS GAM40MUS GAM46MUS GAM52MUS Model : LN32A650A1F LN40A650A1F LN46A650A1F LN52A650A1F SERVICE Manual TFT-LCD TV Contents 1. Precautions 2. Product specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram LN32A650A1F/LN40A650A1F/ LN46A650A1F/ LN52A650A1F Refer to the service manual in the GSPN (see the rear cover) for the more information.
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.
6. Wiring Diagram 6-5. Connector Functions Connector Functions CN1303 <-> CN505(TCON) The LVDS signal transfered from Main Board to Panel . CN101 <-> CN801 Supply main power from IP board to Main Board. CN1302 <-> CN1803 Supply dimming power from IP board to Main Board. CN1806 <->...
2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model LN32A650A1F Feature Digital-TV, RF, 4-HDMI, 2-Component, 2-A/V, 1-S-Video, USB2.0(WISELINK), D-SUB, INFO LINK � Brightness : 500cd/m � Contrast Ratio : 15000:1 � Response time : 8ms � Dynamic contrast, Super-PVA �...
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2. Product specifications Model LN40A650A1F Feature Digital-TV, RF, 4-HDMI, 2-Component, 2-A/V, 1-S-Video, USB2.0(WISELINK), D-SUB, INFO LINK � Brightness : 500cd/m � Contrast Ratio : 50000:1 � Response time : 6ms � Dynamic contrast, Super-PVA � PIP(in HDMI 1, 2, 3, 4, Component 1, 2, PC Mode and Sub picture is available only in TV analog mode) �...
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2. Product specifications Model LN46A650A1F Feature Digital-TV, RF, 4-HDMI, 2-Component, 2-A/V, 1-S-Video, USB2.0(WISELINK), D-SUB, INFO LINK � Brightness : 500cd/m � Contrast Ratio : 50000:1 � Response time : 6ms � Dynamic contrast, Super-PVA � PIP(in HDMI 1, 2, 3, 4, Component 1, 2, PC Mode and Sub picture is available only in TV analog mode) �...
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2. Product specifications Model LN52A650A1F Feature Digital-TV, RF, 4-HDMI, 2-Component, 2-A/V, 1-S-Video, USB2.0(WISELINK), D-SUB, INFO LINK � Brightness : 500cd/m � Contrast Ratio : 50000:1 � Response time : 6ms � Dynamic contrast, Super-PVA � PIP(in HDMI 1, 2, 3, 4, Component 1, 2, PC Mode and Sub picture is available only in TV analog mode) �...
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2. Product specifications CHANNEL FREQUENCY TABLE OUTPUT FREQUENCY : ANALOG fv:45.75MHz, fs:41.25MHz DIGITAL Fc:44MHz TUNING STEP SIZE : FIRST PLL 250KHz SECOND PLL 62.5KHz OSD CH NO CH NO CH NO CH NO Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 72.
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2. Product specifications OSD CH NO CH NO CH NO CH NO Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 499.25 ULTRA 498.00 499.25 505.25 ULTRA 504.00 505.25 511.25 ULTRA 510.00 511.25 517.25 ULTRA 516.00 517.25 523.25 ULTRA 522.00 523.25 529.25...
2. Product specifications 2-3. Spec Comparison to the Old Models AMBER Model (LN40A650A1F/LN40A650A1F Tulip(LNT4061) /LN46A650A1F/LN52A650A1F) Design Display Type LCD TV LCD TV Built-in Tuner Resolution 1920 x 1080 1920 x 1080 32” : TFT LCD Panel 60Hz LCD Panel TFT LCD Panel 60Hz 40”/46”/52”...
4. Troubleshooting 4. Troubleshooting 4-1. 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 or loose cable connection. • Check to see if the cables are connected according to the connection diagram. Check the power input to the Main Board.
4. Troubleshooting 4-1-1. No Power The LEDs on the front panel do not work when connecting the power cord. The SMPS relay does not work when connecting the power cord. Symptom The units appears to be dead. The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are improperly connected or the Main Board or SMPS is not functioning.
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4. Troubleshooting 4-1-2. No Video (Analog PC signal) Symptom Audio is normal but no picture is displayed on the screen. Check the PC source Major Check the MST336CCLK, Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting WAVEFORMS PC Input (V-Sync, H-Sync)
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4. Troubleshooting 4-1-3. No Video (HDMI 1, 2, 3, 4 - Digital Signal) Symptom Audio is normal but no picture is displayed on the screen. Check the HDMI source Major Check the MST336CCLK, Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting 4-1-4. No Video (Tuner_CVBS) Symptom Audio is normal but no picture is displayed on the screen. Check the Tuner CVBS source Major Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting WAVEFORMS Tuner CVBS Out (Pattern: Grey Bar) Eagle+ Out (Clk, H-Sync)
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4. Troubleshooting 4-1-5. No Video (Tuner DTV) Symptom Audio is normal but no picture is displayed on the screen. Check the DTV source Major Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting WAVEFORMS Tuner CVBS Out (Pattern: Grey Bar) TS DATA Out (Clk, Data [0]) 4-10...
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4. Troubleshooting 4-1-6. No Video (Video CVBS 1, 2) Symptom Audio is normal but no picture is displayed on the screen. Check the Video CVBS source Major Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting 4-1-7. No Video (S-Video) Symptom Audio is normal but no picture is displayed on the screen. Check the S-Video source Major Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting 4-1-8. No Video (Component 1, 2) Symptom Audio is normal but no picture is displayed on the screen. Check the Component source Major Check the MST336CCLK, Check the Bayhill+ checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
4. Troubleshooting 4-1-9. No Sound Symptom Video is normal but there is no sound.. When the speaker connectors are disconnected or damaged. Major When the sound processing part of the Main Board is not functioning. checkpoints Speaker defect.. Lamp(Backlight) Off, no sound. Check the sound source and Input a sound signal.
4. Troubleshooting 4-2. Alignments and Adjustments 4-2-1. General Alignment Instuction Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. Use the specified test equipment or its equivalent. Correct impedance matching is essential.
4. Troubleshooting 4-3. Factory Mode Adjustments 4-3-1 Entering Factory Mode To enter ‘Service Mode’ Press the remote -control keys in this sequence : - If you do not have Factory remote - control Power OFF MUTE Power On MUTE ENTER 4-3-2 How to Access Service Mode Using the Customer Remote Turn the power off and set to stand-by mode...
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4. Troubleshooting Standard Contrast EPA Standard Standard Bright Standard Sharpness Standard Color Standard Tint Standard Backlight BHP_VDEC agc_mode U_Delay_daj 3d_comb_luma_sns Y_Gain_Man ST_Beg_NTSC cmd_gain_mts_ntsc saturation vs_slice_level hs_slice_level Y_shape_sel synctip_noise C_shape_sel bl_auto_speed_control lf_iir bl_force_slow if_filt_sel bl_force_fast LTI_en 3D_DNR_en LTI_filt_sel 3D_DNR_Gain LTI_level allow_3d_filt_sel CTI_en 3d_comb_noise_sns CTI_filt_set...
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4. Troubleshooting BHP_DP Deblock_ON MixTH1 MixTH2 NARS_ON SD_CSC HD_CSC 7438 M_SD_CSC M_HD_CSC Sharpness sharp75 CDataCoring Pre_GainH1 Sub Color Pre_GainH2 Pre_GainV1 Pre_GainV2 Post_GainH1 Post_GainH2 Post_GainH3 Post_GainV1 Post_GainV2 CTI_Gain Pre_LTIH Pre_LTIV Post_LTIH Post_LTIV FBE3 Pattern_sel M-Skin-UV B_Slope gain M-Sub Color B_Tilt min B_Tilt max Lfunc_basis Hfunc_basis...
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4. Troubleshooting Dynamic Contrast Dynamic Contrast Dynamic Dimming LNA+ Off_NR_Gain dB0_NR_Gain dB1_NR_Gain dB2_NR_Gain dB3_NR_Gain LUT0 LUT1 Medium LUT5 High LUT7 Auto LUT2 Still_Check Calibration Expert Settings P-Mode Movie Color Tone WARM2 Backlight Contrast Brightness Color Tint Sharpness Black adjust Expert D-Settings Dynamic Contrast Gamma Flesh tone...
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4. Troubleshooting R-Offset Expert Gray Scale G-Offset B-Offset R-GAIN G-GAIN B-GAIN Expert C-Space Color Space Custom Custom_M_blue Custom_R_red Custom_Y_red Custom_R_green Custom_Y_green Custom_R_blue Custom_Y_blue Custom_G_red Custom_G_green Custom_G_blue Custom_B_red Custom_B_green Custom_B_blue Custom_C_red Custom_C_green Custom_C_blue Custom_M_red Custom_M_green Expert Others Size Just scan H-Position V-Position Auto HDMI Black Level...
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4. Troubleshooting FRCM_Option SSC_OnOff Film_Medi_SD_22 SSC_Width[%] Film_Medi_SD_32 SSC_Freq[KHz] Film_Medi_HD_22 PATT_BeforeDDR Film_Medi_HD_32 PATT_AfterDDR Film_High_SD_22 FMD_Demo Film_High_SD_32 Video_Judder_Off Film_High_HD_22 Video_Judder_Low Film_High_HD_32 Video_Judder_Med DDRHangupDetect Video_Judder_High Film_Off_Judder Film_Low_SD_22 Film_Low_SD_32 Film_Low_HD_22 Film_Low_HD_32 Hotel Option Hotel Mode Power On Channel Power On Band Power On Volume Max Volume Panel Button Lock Power On Source...
4. Troubleshooting 4-4. White Balance - Calibration 4-4-1 White Balance -Calibration 1. ADC AV Calibration Comp Calibration PC Calibration HDMI Calibration 4-4-2 Service Adjustment - You must perform Calibration in the Lattice Pattern before adjusting the White Balance. Color Calibration ...
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4. Troubleshooting Method of Color Calibration (AV) 1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port 2) Press the Source key to switch to “AV1” mode 3) Enter Service mode 4) Select the “ADC” menu 5) Select the “AV Calibration”...
4-5. Servicing Information 4-5-1 USB Download Method Samsung may offer upgrades for TV’s firmware in the future. Please contact the Samsung call center at 1-800- SAMSUNG (726-7864) to receive information about downloading upgrades and using a USB drive. Upgrades will be possible by connecting a USB drive to the USB port located on your TV.
3. Disassembly and Reassemble 3. Disassembly and Reassemble This section of the service manual describes the disassembly and reassembly procedures for the LN40A650A1F LCD 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. 2.
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3. Disassembly and Reassemble Description Picture Description Screws 2. Remove the screws of rear-cover. 3. Lift up the rear-cover. * Fan is used in 40” only...
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3. Disassembly and Reassemble Description Picture Description Screws 4-1. Remove the screws of Scaler board’s shield case. (40”, 52”) 4-2. Remove the screws of Scaler board’s shield case. (46”) 4-3. Remove the screws of IP and main board. * 32” model hasn’t shield case.
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3. Disassembly and Reassemble Description Picture Description Screws 5. Remove the speakers and screws of inlet socket. 6. Remove the screws of Stand BKLT. Lift up the Stand BKLT. 7. Remove the Side AV Ass’y (only 46”)
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3. Disassembly and Reassemble Description Picture Description Screws 8-1. Remove the screws of bracket. (32”) 8-2. Remove the screws of bracket. (40”) 8-3. Remove the screws of bracket. (46”, 52”) * Caution: Don’t place excessive pressure on wall mount bracket during disassembly.
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3. Disassembly and Reassemble Description Picture Description Screws 9. Remove the screws on Panel. Reassembly procedures are in the reverse order of disassembly procedures. ※...