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1. Precaution 2. Product Specification 3. Disassembly & Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram PL-42Q91HDP Refer to the service manual in the GSPN (see the rear cover) for the more information.
When Check the AC power cord for possible damages. Keep voltage exceeds the specified limits, check each special the part or the lead away from any heat-emitting part. materials. Samsung Electronics...
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Critical safety parts should be bracketed with ( Use only regular parts for replacements (in particular, flame resistance and dielectric strength specifications). Irregular parts or materials may cause electric shock or fire. Samsung Electronics...
AC source and turn the switch on. Connect the insu- lating resistance meter (500v) to the AC plug blade. The insulating resistance between the blade of the AC plug and that of the conductive material should be more than 1 ㏁. Samsung Electronics...
These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Samsung Electronics...
5. Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric shock. Samsung Electronics...
2. Product Specification 2-1 Product Specification Features Block Specification Major IC Remark NTSC/VSB/QAM Tuner Digital/Analog (DTV Built In) S4LF111X01(Lake2) PDP Module Samsung SDI W2A Module 42"HD/50"HD New Module Samsung/Dong-yang electro Power mechanics SMPS NTSC 3.58, ATSC HDMI Lake2 Video DNIe(FBE2)
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- WISELINK: This function enables you to view photo (JPEG) and listen to audio files (MP3) saved on a USB Mass Storage Class (MSC) device. - Anynet+ : Anynet+ is an AV network system that enables you to control all connected Samsung AV devices with your Samsung TV's remote.
3-1-2 Separation of ASSY PCB MISC-MAIN Part Name Description Description Photo Main ① Detach all connectors from the Main Board Board. ② Remove 4 screws. : PH,+,WWP,M3,L8,NI PLT ③ Remove the Main Board. Samsung Electronics...
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② Remove 2 screws. ( : PH,+,WWP,M3,L8,NI PLT ③ Remove a screw. ( : BH,+,S,M4,L10,ZPC(BLK) ④ Remove FILTER-EMI AC LINE. 3-1-4 Separation of BRACKET-PCB Part Name Description Description Photo Bracket ① Remove a screw. : BH,+,S,M4,L10,ZPC(BLK) ② Remove the BRACKET-PCB. Samsung Electronics...
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: BH,+,B,M4,L3,ZPC(BLK) ③ Remove Bracket. 3-1-6 Separation of ASSY BOARD P-SIDE AV Part Name Description Description Photo Side AV ① Remove a screw. ( : BH,+,B,M4,L3,ZPC(BLK) ② Remove a screw. ( : BH,+,S,M4,L10,ZPC(BLK) ③ Remove the Side AV. Samsung Electronics...
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50" ① Remove 2 screws. ( Wall : BH,+,B,M4,L3,ZPC(BLK) Bracket ② Remove 6 screws. ( : BH,+,S,M4,L10,ZPC(BLK) ③ Remove Wall Bracket. : Please lay the PDP panel face down on a soft surface when separating front cover. Samsung Electronics...
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: BH,+,WP,B,M4.0,L3,ZPC(BLK), SWRCH18A ② Remove the Speaker. 3-1-9 Separation of ASSY BOARD P-POWER&IR Part Name Description Description Photo Power ① Detach all connectors from the & Power&IR Board. IR Board ② Remove the Power&IR PCB unlocking the 2 holders. Samsung Electronics...
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② Remove 8 screws. : PH,+,WWP,M3,L8,NI PLT ③ Remove the SMPS. : Wear gloves when handling the power board as there may be some remaining electrical charge in the capacitor. Specifically, avoid touching any part of the capacitor. Samsung Electronics...
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② Remove 4 screws. : WSP,PH,+,M3,L8,NI PLT ③ Remove the Logic Main Board. 50" ① Detach all connectors from the Logic Logic Main Board. Board ② Remove 4 screws. : WSP,PH,+,M3,L8,NI PLT ③ Remove the Logic Main Board. Samsung Electronics...
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X-Board, press the upper and the lower sides of the connector. 42" ① Remove 4 screws. X-Main : PH,+,WWP,M3,L8,NI PLT Board ② Remove the X-Main Board. 50" ① Remove 4 screws. X-Main : PH,+,WWP,M3,L8,NI PLT Board ② Remove the X-Main Board. Samsung Electronics...
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Flat Cable ① Detach the 6 scan board connectors from the panel by pulling the holder from both the top and bottom ends. 42" ① Remove 3 screws. Y-Scan : PH,+,WWP,M3,L8,NI PLT Board 50" ① Remove 5 screws. Y-Scan : PH,+,WWP,M3,L8,NI PLT Board Samsung Electronics...
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Description Photo 42" ① Remove 4 screws. Y-Main : PH,+,WWP,M3,L8,NI PLT Board ② Detach all connectors from the Y-Main Board. 50" ① Remove 4 screws. Y-Main : PH,+,WWP,M3,L8,NI PLT Board ② Detach all connectors from the Y-Main Board. 3-10 Samsung Electronics...
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② Remove 12 screws. : PH,+,WWP,M3,L8,NI PLT ③ Remove the E-Board and F-Board. 50" ① Detach the all connectors from the Buffer buffer board. Board ② Remove 14 screws. : PH,+,WWP,M3,L8,NI PLT ③ Remove the E-Board and F-Board. Samsung Electronics 3-11...
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② Remove 4 screws. ( : BH,+,S,M4,L10,ZPC(BLK) ③ Remove the Side Panel Brackets. 3-1-16 Separation of ASSY PCB FUNCTION Part Name Description Description Photo Function ① Remove 2 screws. Board : BH,+,B,M4,L3,ZPC(BLK) ② Remove the Function Board. 3-12 Samsung Electronics...
- Check to see if the cables are connected according to the connection diagram. 2. Check the power input to the Main Board. 3. Check the voltage in and out between the SMPS ↔ Main Board, between the SMPS ↔ X, Y Main Board, and between the Logic Boards. Samsung Electronics...
Is the Fuse (F801S) of the SMPS ① Replace Fuse (F801S) Power Input Part blown? SMPS CN801 ② Pin 3 : STB 5V Replace the SMPS Pin 2 PS-ON : Check to see if it is 0V Replace the Main Board Samsung Electronics...
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X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit. Samsung Electronics...
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X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit. Samsung Electronics...
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Is the output voltage of SMPS normal? ② (CN801 #13) Replace the SMPS Is the speaker output terminal of the Main Board normal? Replace the Main Board ③ Replace the Speaker Samsung Electronics...
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- Check the CVBS cable connection. - Check the power input of the Main board. Troubleshooting Procedures Is the antenna connection setting properly configured? Configure properly ① Check CN1101 pin2 for +5V Replace the SMPS Replace the Main Board Samsung Electronics...
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Check the U101, D108 Normal Abnormal Check the U201, Q203, Q204 Normal Abnormal Check the U501 Abnormal Check the U601 Multi Normal Abnormal Check the Q401, Q402 Normal Check the Other board (Image Board or Driver Board) or Cable. Samsung Electronics...
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Some horizontal lines appear to be linked on screen Scan Buffer, FPC of X/Y Address Open Some vertical lines don't exist on screen Logic Main, Logic Buffer, TCP Address Short Some vertical lines appear to be linked on screen Logic Main, Logic Buffer, TCP Samsung Electronics...
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F5004 for VCC F4004 for VDD F5005 for OUT_L F4005 for Ve Q4002~Q4003 SHORT SHORT Q5009~Q5021 FET/ Q4011~Q4016 FET/ D5005, D5007 Replace the Board Replace the Board DIODE D4004 DIODE D5008 D4006~D4008 Y-MAIN X-MAIN Normal State Normal State Samsung Electronics...
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FUSE Replace the Board FUSE Replace the Board F5004 for VCC F4004 for VDD F5005 for OUT_L F4005 for Ve SHORT SHORT Q4002~Q4003 Q5009~Q5021 Replace the Board Replace the Board Q4011~Q4016 Y-MAIN X-MAIN Normal State Normal State 4-10 Samsung Electronics...
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④ Sustain Short (some horizontal lines appear to be linked on Video) [ Y-FPC ] Sustain Short (Discharging in unwanted Scan line) After Changing Y-buffer, Replace the Panel recheck the status There is a defect on the FPC Done (Defect is from Y-buffer) Samsung Electronics 4-11...
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Buffer Board and the Logic Main address data output section. Check the FFC connection status Check the detailed waveform Replace Logic Main / and control the signal waveform Address Buffer (E or F) / DONE Replace the Panel 4-12 Samsung Electronics...
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- Check the version of each program - Replace the Main board A blank upper (or lower) block Upper/Lower Y Buffer defect appears on the screen. - Replace the corresponding upper/lower buffers (E, F) Samsung Electronics 4-13...
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- Adjust the SMPS voltage according to the voltage printed on the module label Dim screen (blurred in red) X-Main board defect - Replace the X-Main board A blank screen appears - Replace the Y-Main board 4-14 Samsung Electronics...
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The side function key does not work properly 10 ASSY BOARD P-POWER&IR The remote control does not work properly, the LED does not work properly. 11 ASSY BOARD P-SIDE AV The AV2 and S-VIDEO2 modes do not work properly <PDP 42”> <PDP 50”> Samsung Electronics 4-15...
① Write down the value of HDMI White Balance of Factory Mode before replacing Board. ② PDP Option of Factory Mode → set the Factory Data Type item as the suitable value of relevant model. ③ Set the value of HDMI White Balance with the value written down before. 4-16 Samsung Electronics...
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※ If you have adjusted the settings in Service Mode, you have to reset the product. ※ If you exit Service Mode without reset, DNIe vlaue keeps Off regardless of setting up the user. Samsung Electronics 4-17...
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1200 1200 1200 HDMI Mode Ident Auto Auto Auto Auto Auto Select FBE FBE2X FBE2X FBE2X FBE2X FBE2X WM_Calibration SVP Caption level No MGT Case Hotel Mode * Spread Spectrum Item Data SSC Range SSC RESET SEL 4-18 Samsung Electronics...
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③ UV Delay Item Range AV/S-video Component HD HDMI U Delay V Delay ④ PGA Item Range AV/S-video Component HD HDMI TCD3_Contrast TCD3_Bright TCD3_YC_Delay ANALOG_Y_Offset ANALOG_PB_Offset ANALOG_PR_Offset ANALOG_Y_Gain ANALOG_PB_Gain ANALOG_PR_Gain Samsung Electronics 4-21...
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M-Skin-Tv M-Au Sub color MW_Skin Tu MW_Skin Tv M-Wi Sub color 7. MSP44XX Item Range AV/S-video Component HD HDMI FM_Precale Melody Volume SpdifDelay InternalDelayDtv InternalDelayAnalog Carrier Mute Pilot High Pilot Low Scart1 Out Volume Scart2 Out Volume Samsung Electronics 4-23...
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No Info No Info No Info No Info Panel Version Logic SW Version 61128 61128 61128 61128 61128 Factory Update Factory Data Type NONE NONE NONE NONE NONE CDC_SW CDC_STRENG_TH BRE_SE PANEL TEMP 15. RESET 16. 10W, NONE Samsung Electronics 4-25...
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Perform in NTSC B&W Pattern #24 Lattice Component IN (Model_#6) Perform in 720p B&W Pattern #24 Lattice Perform in VESA XGA (1024x768) PC Analog IN (Model_#21) Lattice B&W Pattern #24 HDMI IN Perform in 720p B&W Pattern #24 Lattice <Table 1> 4-26 Samsung Electronics...
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6) In "HDMI Calibration Off" status, press the "▶" key to perform Calibration. 7) When Calibration is complete, it returns to the high-level menu. 8) You can see the change of the "HDMI Calibration" status from Failure to Success. Samsung Electronics 4-27...
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3. Pattern : Pattern #92 4. Use Equipment : MIK-7256 (MSPG925L) ( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD ) 5. Work order ① Connect HDMI (DVI) output terminal of MIK-7256 (MSPG925L) to the HDMI input in main set ② Set the input to HDMI mode ③...
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ASSY PDP MODULE P-ADDRESS E BUFFER ASSY PDP MODULE P-ADDRESS F BUFFER ASSY BOARD P-SIDE HDMI A/V ※ When replacing the SMPS or PDP panel, you have to check the voltage printed on the panel sticker and adjust it. 4-30 Samsung Electronics...
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(If you do not adjust the voltage, an abnormal discharge symptom may appear.) Value Board Adjustment Vset SMPS Vscan -190 SMPS Voltage Label 2. A point of adjusting SMPS-MAIN voltage. Vs Adjustment Vs Test point Va Test point Va Adjustment Samsung Electronics 4-31...
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Troubleshooting Y-RR and Y-FR controls ■ ■ Test Point Set the main reset (rising : 60usec, falling : 80usec) by change the value of variable resistor. 60usec 80usec Rising ramp variable resistor Falling ramp variable resistor 4-32 Samsung Electronics...
It takes about 30 sec. (Warning: Don't remove USB flash driver during upgrade.) ⑨ The banner OSD "Upgrade is completed" is displayed when the upgrade is completed. ⑩ Remove the USB flash driver from PDP TV and check the program version. Samsung Electronics 4-33...
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② Place the cursor over the "On" of "Function Help", and press the "Info" key on the remote control ③ The version of the program is displayed at the bottom of the Menu screen MAIN PROGRAM VERSION MICOM VERSION 2. How to check Program Version on factory mode. MAIN PROGRAM VERSION MICOM VERSION 4-34 Samsung Electronics...
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KEY_INPUT2 5.3V 5.3V LED_CTRL ⑨ ⑩ ⑪ CN1203(MAIN B'D) CN1605(MAIN B'D) CN800(SMPS) ↔ ↔ ↔ SPEAKER FUNCTION AC INLET Pin No. Signal Pin No. Signal Pin No. Signal R+_OUT KEY_INPUT1 AC Neutral R-_OUT KEY_INPUT2 L+_OUT AC Live L-_OUT Samsung Electronics...
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CN2609 CN2609 SMPS and F-Buffer Connect CN1101 CN1101 SMPS and Main Board Connect CN2202 CN2202 Main Board and Logic Board Connect CN1605 CN1605 Function Assy and Main Board Connect CN1404 CN1404 Side AV Assy and Main Board Connect Samsung Electronics...
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CN1606 CN1606 Power SW Assy and Main Board Connect CN1203 CN1203 Speaker and Main Board Connect CN101 CN101 Side AV Assy and Main Board Connect Function Assy and Main Board Connect Power SW Assy and Main Board Connect Samsung Electronics...
Connects to the Y terminal block, 1) provides maintaining voltage waveform (including ERC), 2) provides Y Rising, Falling Ramp waveforms, and 3) maintains the Vscan bias. ■ Address Buffer Board It delivers the data signal and control signal to the TCP. Samsung Electronics...
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Schematic Diagram 7-2 Schematic Diagram 7-2-1 MAIN POWER BLOCK This Document can not be used without Samsung’s authorization. Power ) " , " ) " Samsung Electronics...
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Schematic Diagram 7-2-2 STANDBY MICOM (WT61P6) & SUB FUNCTION I/F This Document can not be used without Samsung’s authorization. Power & c t i Samsung Electronics...
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Schematic Diagram 7-2-3 SOUND PROCESSOR (MSP4450) This Document can not be used without Samsung’s authorization. Power Samsung Electronics...
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Schematic Diagram 7-2-4 SOUND AMP (NTP3000) & POP SOLUTION This Document can not be used without Samsung’s authorization. Power Samsung Electronics...
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Schematic Diagram 7-2-5 NIM TUNER 1410 This Document can not be used without Samsung’s authorization. Power Samsung Electronics...
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Schematic Diagram 7-2-6 BACK AV IN/OUT This Document can not be used without Samsung’s authorization. Power Samsung Electronics...
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Schematic Diagram 7-2-7 SIDE AV IN/OUT This Document can not be used without Samsung’s authorization. Power Samsung Electronics...
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Schematic Diagram 7-2-8 HDMI SWITCH & PC IN & HDMI INPUT This Document can not be used without Samsung’s authorization. Power 7-10 Samsung Electronics...
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Schematic Diagram 7-2-9 SVP-PX POWER This Document can not be used without Samsung’s authorization. Power Samsung Electronics 7-11...
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Schematic Diagram 7-2-10 SVP-PX_MAIN This Document can not be used without Samsung’s authorization. Power > - l a i n i l & n i l 7-12 Samsung Electronics...
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Schematic Diagram 7-2-11 SVP-PX DDR MEMORY This Document can not be used without Samsung’s authorization. Power Samsung Electronics 7-13...
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Schematic Diagram 7-2-12 FBE This Document can not be used without Samsung’s authorization. Power 7-14 Samsung Electronics...
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Schematic Diagram 7-2-13 LAKE (I2C & GPIO & USB & UART & INTERRUPT) This Document can not be used without Samsung’s authorization. Power & Samsung Electronics 7-15...
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Schematic Diagram 7-2-14 LAKE (I2S INPUT/OUTPUT & TS-INPUT & YCbCr OUTPUT) This Document can not be used without Samsung’s authorization. Power 7-16 Samsung Electronics...
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Schematic Diagram 7-2-15 LAKE (DDR MEMORY) This Document can not be used without Samsung’s authorization. Power Samsung Electronics 7-17...
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Schematic Diagram 7-2-16 LAKE (STATIC MEMORY & DEBUG) This Document can not be used without Samsung’s authorization. Power 7-18 Samsung Electronics...
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Schematic Diagram 7-2-17 LAKE (POWER BLOCK) This Document can not be used without Samsung’s authorization. Power Samsung Electronics 7-19...