Samsung PL42E7SX/RCL Service Manual
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Samsung PL42E7SX/RCL Service Manual

Samsung PL42E7SX/RCL Service Manual

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SERVICE
PLASMA DISPLAY TV
PLASMA DISPLAY TV
Chassis : D74D(N_42SD)_Spirra
Model
: PL42E7SX/RCL
Manual
DTV Ready PDP TV
■
■
■ Supreme Picture Quality
Supreme Convenience Quality
RF, HDMI, PC(Analog),
■
■
2 Component, 2 Video, S-Video
■ Slim line design
Energy Saving
■
■
PL-42E7S
FEATURES

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Summary of Contents for Samsung PL42E7SX/RCL

  • Page 1 PLASMA DISPLAY TV Chassis : D74D(N_42SD)_Spirra Model : PL42E7SX/RCL SERVICE Manual PLASMA DISPLAY TV FEATURES DTV Ready PDP TV ■ ■ ■ Supreme Picture Quality Supreme Convenience Quality RF, HDMI, PC(Analog), ■ ■ 2 Component, 2 Video, S-Video ■ Slim line design Energy Saving ■...
  • Page 2 © Samsung Electronics Co., Ltd. Aug. 2006 This Service Manual is a property of Samsung Electronics Co.,Ltd. Printed in Korea Any unauthorized use of Manual can be punished under applicable AA82-04056A International and/or domestic law.
  • Page 3 ■ 5-1 PL42E7SX/RCL Service Item ........

  • Page 4: Table Of Contents

    Chapter 9 PCB Diagram ■ 9-1 Main Board ..............9-1 ■...

  • Page 5: Other Issues Related To Other Products

    SVP-XXL6HD have a size adjustment feature to 16:9, 4:3, Panorama, Zoom1, Zoom2 and Auto device: Wide. This is about the aspect ratio of the top and bottom boundaries to the overall screen and users can select their preference. Samsung Electronics 14-1...
  • Page 6 Ex: For LCD 15:9 devices, "Wide" is displayed on the OSD instead of "16:9". 4. The picture size can be changed even in the blue screen. However, the picture size should be controlled by the product specifications if the change is impossible due to hardware restrictions. 14-2 Samsung Electronics...

  • Page 7: Technical Terms

    While the aspect ratio of a normal TV is 4：3, that of a wide a single channel only. screen is 16：9. Through a mono interface, it is hard to experience stereophonic sound and the sound is played using only one speaker. Samsung Electronics 14-3...
  • Page 8 This refers to a screen that corrects the picture distortion due to a screen size mismatch on the TV. Progressive Scan Progressive scan displays the entire frame in a single sweep so as to provide clearer and sharper visual quality. 14-4 Samsung Electronics...
  • Page 9 Therefore, if someone says that a 5000:1 contrast displays a color by 5000 levels, he is confusing Contrast with Gradation. Brightness Brightness is the brightness per unit screen area, the unit for brightness is candela (cd). For example, 1000cd/m2 means the brightness that is measured when 1000 candles are lit within 1 square meters area. Samsung Electronics 14-5...
  • Page 10 The Color reproductivity of a TV is a certain % of NTSC. This means the TV displays that particular % of the color coordinate area of the NTSC signal broadcast by the broadcasting station. In general, a CRT TV provides the highest functional color reproductivity. 14-6 Samsung Electronics...

  • Page 11: Product Features And Functions

    Press to turn the TV on and off. Power Indicator Blinks and turns off when the power is on and lights up in stand-by mode. Remote Control Sensor Aim the remote control towards this spot on the TV. Speakers PL-42P7H/PL-50P7H Samsung Electronics 11-1...

  • Page 12: Viewing The Connection Panel

    S-Video input for external devices with an S-Video output. AV IN 2 Video and audio inputs for external devices. HEADPHONE You can connect a set of headphones to your television if you wish to watch a television program without disturbing other people in the room. 11-2 Samsung Electronics...
  • Page 13 Selects SRS TruSurround XT mode. 16 SOURCE Press to display all of the available video sources. This is a special remote control for the visually impaired, and has Braille points on the Power, Channel and Volume buttons. Samsung Electronics 11-3...
  • Page 14 TV, VCR, Cable, DVD, or Set-Top Box. RESET button for 2-3 seconds before use. This is a special remote control for the visually impaired, and has Braille points on the Power, Channel and Volume buttons. 11-4 Samsung Electronics...

  • Page 15: Installation Notes And Precautions

    11-2-1 Installation Notes 1. Contact a technician for installing the wall bracket. 2. Samsung Electronics is not responsible for any damages to the product or harm to customers when the installation is done by the customer. 3. This product is for installing on cement walls. The product may not stay in place when installed on plaster or wood.
  • Page 16 ( ) and hook ( ) down to secure the PDP on the wall mount as illustrated. Secure the PDP by inserting the Safety Pins, not to fall from the wall mount. PDP panel Wall attachment Wall panel bracket 11-6 Samsung Electronics...
  • Page 17 Remove the Safety Pins to adjust the angle to 0°, and then secure the Safety Pins again. For safety, be sure to secure the PDP using the safety pins. If the safety pins are not used, the PDP may fall, causing serious injury. Samsung Electronics 11-7...
  • Page 18 MEMO 11-8 Samsung Electronics...

  • Page 19: Overhaul Disassembly & Reassembly

    12-1-2 Separation of ASSY BRACKET P-TERMINAL Part Name Description Description Photo Bracket ① Remove the 8 screws on the Bracket Terminal. Terminal : BH,+,-,S,M4,L8,ZPC(BLK) ② Remove the 2 Hex nuts for the PC input. : M3,L6,NI PLT,SUM24L,#4-40 ③ Remove Bracket Terminal. Samsung Electronics 12-1...
  • Page 20 ② Remove all connectors from the board. ③ Remove the Main Board. 12-1-5 Separation of BRACKET-PCB Part Name Description Description Photo Bracket ① Remove 4 screws. : BH,+,-,S,M4,L8,ZPC(BLK) ② Remove 2 screws. : BH,+,B,M4,L8,ZPC(BLK) ③ Remove the BRACKET-PCB. 12-2 Samsung Electronics...
  • Page 21 Description Description Photo Wall ① Remove 8 screws. Bracket : BH,+,B,M4,L12,ZPC(BLK) ② Remove 8 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 12-3...
  • Page 22 ① Remove 4 screws. : BH,+,WP,B,M4.0,L12,ZPC(BLK),SWRCH18A,- ② Remove the Speaker. 12-1-10 Separation of ASSY BOARD P-POWER& IR Part Name Description Description Photo Power ① Remove 2 screws. & : BH,+,-,S,M4,L8,ZPC(BLK) IR Board ② Remove the Power & IR Board. 12-4 Samsung Electronics...
  • Page 23 ⑤ Remove 4 screws. : PH,+,WWP,M3,L8,NI PLT ⑥ Remove the SMPS DC/DC Board. : 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 12-5...
  • Page 24 12-1-13 Separation of ASSY PDP MODULE P-LOGIC MAIN BOARD Part Name Description Description Photo Logic ① Detach all connectors from the Logic Main Board. Board ② Remove 4 screws. : WSP,PH,+,M3,L8,NI PLT ③ Remove the Logic Main Board. 12-6 Samsung Electronics...
  • Page 25 Flat Cable ① Detach all Connectors from the X Main Board. ※ To separate the Flat Cable of the X-Board, press the upper and the lower sides of the connector. X-Main ① Remove 4 screws. Board : PH,+,WWP,M3,L8,NI PLT ② Remove the X-Main Board. Samsung Electronics 12-7...
  • Page 26 Y-Scan ① Remove 2 screws. : PH,+,WWP,M3,L8,NI PLT Connectors ① Separate the scan board from the Y-Main Board by detaching the 3 connectors and remove the Scan Boards. 12-8 Samsung Electronics...
  • Page 27 Disassembly & Reassembly Part Name Description Description Photo Y-Main ① Remove 4 screws. Board : PH,+,WWP,M3,L8,NI PLT ② Detach all connectors from the Y-Main Board. Samsung Electronics 12-9...
  • Page 28 Still Bar ① Remove 3 screws. : PH,+,WWP,M3,L8,NI PLT ② Remove the still bar. Buffer ① Detach the all connectors from the buffer board. ② Remove 10 screws. : PH,+,WWP,M3,L8,NI PLT ③ Remove the E-Board and F-Board. 12-10 Samsung Electronics...
  • Page 29 4. If the VS_ON signal from the Logic Board changes from Low to High, the Main SMPS supplies VS power to the X and Y Main Board through the DC-DC SMPS, and the screen displays a picture on it. Samsung Electronics 13-1...

  • Page 30: Partial Block Description

    No single point fault shall be able to cause a sustained over voltage condition on any of all outputs. The supply shall provide latch-mode Over Voltage Protection as defined below. Parameter Unit VS(210V) 250 ~ VA(70V) 100 ~ VCC(+5.3V) 6.8 ~ 13-2 Samsung Electronics...
  • Page 31 Section 3 above. Current Protection as defined below. Output Over Current Limit Unit VS(210V) 20A, Constant Current.(TBD) VA(70V) 10A, Constant Current.(TBD) Output except Vs,Va No damage (Auto Recovery or Shut down.) Samsung Electronics 13-3...
  • Page 32 The LED that shows whether the Sync and Clock signal is properly supplied to the logic ⑬ Operating Status LED board. (Normal Status: Blinks at 0.5 second intervals) ⑭ Buffer Connector The connector to output the address data and the control signal to the F-buffer board. ⑮ V-TOGG V-SYNC output pin. 13-4 Samsung Electronics...
  • Page 33 If a short circuit is found and it is repairable, repair it. If a short circuit is internal, replace the board. ▶ The following waveform appears when the V-sync and address data are output properly. < Normal V-SYNC Output Waveform > < Normal Address Data Output Waveform > Samsung Electronics 13-5...
  • Page 34 In addition, a weak discharge is introduced, because the applied voltage is low. 13-6 Samsung Electronics...
  • Page 35 This is connected to the Y port part of the panel. It outputs 1) Sustain voltage wave form (including ERC), and 2) Y Rising, Falling Ramp waveform, and maintains 3) Vscan bias. 3) Y Buffer Board A board, which applies the Scan waveform to the Y terminal block, consists of 12 Scan Driver ICs (TI SN755870: 64 Outputs). Samsung Electronics 13-7...
  • Page 36 By floating the Odd line that caused the Sustain Discharge in the IDS section to the Vscan-h level, and introducing the Sustain Discharge only for Even lines, it compensates for the optical output difference between the Even and Odd lines. 6) CMS Pulse (ComMon Sustain Pulse) Actual optical is output during the common Sustain Discharge section. 13-8 Samsung Electronics...
  • Page 37 FET2 short circuits, GND is output via the output terminal. 2) When a signal is applied to G1, FET1 short cir cuits and when no signal is applied to G2, FET2 is opened, and 180V is output via the output terminal. Samsung Electronics 13-9...
  • Page 38 Circuit Description ■ Drive Board Connector Layout 1) X-Main Board 1.Vs CN4001 2.Vs 3.DGND CN4004 4.DGND - Power 5.Ve 6.DGND 7.DGND 8.Vcc X-FPC 240mm Connector CN4000 CN4003 15 Pin - Signal Connector 140mm 13-10 Samsung Electronics...
  • Page 39 CN5000 Panel CN5403 CN5005 CN5010 9. Vs 8. Vs 7. GND 6. GND 5. Vset 4. GND 3. Vscan 2. GND CN5402 1. Vcc Panel 280mm CN5400 CN5003 CN5503 Panel CN5001- signal CN5404 CN5004 CN5502 174mm Panel Samsung Electronics 13-11...
  • Page 40 ▶ Adjust the drive waveform so that the main reset (rising, falling:40usec) is the same as those in the F/W pattern. (※ Attachment 1 reference) 120usec 70usec Rising ramp Variable register Falling ramp Variable register < Y-Main > <Voltage Adjustment Specifications> Vset Vsc_l Vsc_h 201V 207V -190V -120V 110V 13-12 Samsung Electronics...
  • Page 41 Circuit Description ▶ Check that the output of X-Out of the X board follows the waveform of ※Attachment 2 when the power is supplied. X-OUT Samsung Electronics 13-13...
  • Page 42 Circuit Description ※ Attachment 1 ■ Y Output Waveform Rising Ramp < Rising Ramp > < Falling Ramp > Falling Ramp 13-14 Samsung Electronics...
  • Page 43 Circuit Description Scan_l < Even_Scan > < Y Sustain > Samsung Electronics 13-15...
  • Page 44 Circuit Description ※ Attachment 2 ■ X Output Waveform < X Sustain > 13-16 Samsung Electronics...

  • Page 45: Chapter 9 Pcb Diagram

    IC MICOM advanced instruction manipulation capabilities to process complex instructions by less bytes and execute instructions at higher speed. ③ FBE IC DNIe Image enhancement IC ④ TCPN3081PA32S(H) TUNER Tuner CH Tuning ⑤ STA323W IC AUDIO-AMP Audio power amplifiers Samsung Electronics...
  • Page 46 Signal Pin No. Signal CN102(Main Board) CN108(Main Board) TXOUT2+ TXOUT0B- Pin No. Signal Pin No. Signal TXOUT0B+ 5.3V 6.5V TXOUT- TXOUT+ TXOUTCLK- TXCLKOUT+ SCL_G 18Vamp TXOUT- SDA_G 18Vamp TXOUT+ TXOUT3- RTN_amp TXOUT3+ PS_ON RTN_amp TXOUT2- STBY FAN_ON FAN_D Samsung Electronics...
  • Page 47 PCB Diagram ④ ⑤ ⑥ CN740(Main Board) CN501(Main Board) CN741(Main Board) ↔ ↔ ↔ CN001(Power Button) Speaker Out CN1(Function Board) Pin No. Signal Pin No. Signal Pin No. Signal SPK_R+ KEY_INPUT1 SPK_R- KEY_INPUT2 SPK_L+ ST5V SPK_L- KEY_INPUT2 IR_7414 Samsung Electronics...

  • Page 48: Power & Ir Board

    9-3 Function Board Function Key. Located on the side of the unit. 9-4 Side AV Board Loc. No. Description CN102 S-VIDEO2 Input Jack ① CN103 AV2 Input Jack ② CN104 Earphone Jack ③ CN105 Side AV Connector ④ Samsung Electronics...

  • Page 49: Main Smps Board

    Signal Pin No. Signal Pin No. Signal Pin No. Signal 6.5V 5.3V STBY 5.3V VS_ON PS_ON 18Vamp 18Vamp 5.3V RTN_amp RTN_amp PS_ON 5.3V STBY 5.3V FAN_ON FAN_D ※ CN811, CN804-2 and CN805, CN806, CN807, CN808 are not used. Samsung Electronics...

  • Page 50: Dc-Dc Smps Board

    ④ CN2(DC-DC SMPS) CN4(DC-DC SMPS) CN5(DC-DC SMPS) CN3(DC-DC SMPS) ↔ ↔ ↔ ↔ CN809(Main SMPS) CN5010(Y B'D) CN4004(X B'D) CN2710(F-Buffer) Pin No. Signal Pin No. Signal Pin No. Signal Pin No. Signal D5.3V D5.3V Vset Vscan D5.3V D5.3V Samsung Electronics...

  • Page 51: Pdp Module

    Y Drive Board ③ ASSY PDP MODULE P-Y MAIN SCAN BUFFER BN96-03103A Y Buffer Board ④ ASSY PDP MODULE P-ADDRESS E BUFFER BN96-03104A Address Buffer Board ⑤ ASSY PDP MODULE P-ADDRESS F BUFFER BN96-03105A Address Buffer Board ⑥ Samsung Electronics...
  • Page 52 MEMO Samsung Electronics...
  • Page 53 Schematic Diagram 10. Schematic Diagram 10-1 Analog 10-1-1 POWER This Document can not be used without Samsung’s authorization. Power Signal Samsung Electronics 10-1...
  • Page 54 Schematic Diagram 10-1-2 MICOM This Document can not be used without Samsung’s authorization. Power MICOM Signal > - > - ( I - Samsung Electronics 10-2...
  • Page 55 Schematic Diagram 10-1-3 IN_OUT_JACK This Document can not be used without Samsung’s authorization. Power Signal Samsung Electronics 10-3...
  • Page 56 Schematic Diagram 10-1-4 HDMI This Document can not be used without Samsung’s authorization. Power Signal HDMI_INPUT 10-4 Samsung Electronics...
  • Page 57 Schematic Diagram 10-1-5 SOUND This Document can not be used without Samsung’s authorization. Power SOUND Signal IC503 STV8258DSX STV8258 : BD510 DELETE Samsung Electronics 10-5...
  • Page 58 Schematic Diagram 10-1-6 SVP-PX This Document can not be used without Samsung’s authorization. Power Signal 10-6 Samsung Electronics...
  • Page 59 Schematic Diagram 10-1-7 TUNER 10-1-9 FBE_Option This Document can not be used without Samsung’s authorization. This Document can not be used without Samsung’s authorization. Power Power Signal Signal 10-1-8 FUNCTION This Document can not be used without Samsung’s authorization. Power...
  • Page 60 Schematic Diagram 10-1-10 FRC This Document can not be used without Samsung’s authorization. 10-8 Samsung Electronics...
  • Page 61 Schematic Diagram 10-1-11 FRC Memory This Document can not be used without Samsung’s authorization. Samsung Electronics 10-9...
  • Page 62 Schematic Diagram 10-1-12 LVDS This Document can not be used without Samsung’s authorization. Power Signal 10-10 Samsung Electronics...
  • Page 63 Schematic Diagram 10-1-13 DTV / TUNER / POWER This Document can not be used without Samsung’s authorization. Samsung Electronics 10-11...

  • Page 64: Service Instruction

    3-1 Service Instruction ■ Before Performing After Sales Services 1. Check if the measurement and test equipment is working properly. 2. Secure sufficient work space for disassembling the product. 3. Prepare a soft pad for disassembling the product. Samsung Electronics...

  • Page 65: How To Access Service Mode

    ※ The version of the firmware displayed at the bottom of the screen may differ and the firmware is subject to change for the improvement of product functions. ※ If you have adjusted the settings in Service Mode, you have to reset the product. Samsung Electronics...

  • Page 66: Factory Data

    Dynamic CE Fixed Dynamic Dimming Fixed Color System Fixed Manual Manual Manual Manual Auto Power Fixed Magazine LNA Fixed V-Chip ACR Fixed Shop Mode Fixed Debug Fixed CH. Table Fixed SAMEX SAMEX SAMEX SAMEX Dynamic Contrast Fixed V-Chip Fixed Samsung Electronics...
  • Page 67 Alignment & Adjustment 3. White Balance ITEM Condition Range A/V, S-VHS Component Sub-Briteness Adjusted 0~255 R-offset Adjusted 0~255 G-offset Fixed 0~255 B-offset Adjusted 0~255 Sub-Contrast Adjusted 0~255 R-Gain Adjusted 0~255 G-Gain Fixed 0~255 B-Gain Adjusted 0~255 Samsung Electronics...
  • Page 68 ④ RGB Calibration ITEM Condition Range A/V, S-VHS Component R-Offset Adjusted 00H ~ FFH G-Offset Adjusted 00H ~ FFH B-Offet Adjusted 00H ~ FFH R-Gain Adjusted 00H ~ FFH G-Gain Adjusted 00H ~ FFH B-Gain Adjusted 00H ~ FFH Samsung Electronics...
  • Page 69 SVP Bright. Fixed 00H ~ FFH ⑥ Calibration Target ITEM Condition Range high Delta AV ADC Fixed 00H ~ FFH Comp ADC Fixed 00H ~ FFH PC ADC Fixed 00H ~ FFH ALL RGB Fixed 00H ~ FFH Samsung Electronics...
  • Page 70 Alignment & Adjustment 5. Option Block (FRC-Micronas, FRC-Samsung, FBE/LBE) ITEM Condition Range A/V, S-VHS Component Test Pattern Fixed 00H ~ 19H B St.Tilt Fixed 00H ~ FFH B St.Gain Fixed 00H ~ FFH B St.Ratio Fixed 00H ~ FFH Skin En...
  • Page 71 00H ~ FFH AV PAL M Fixed 00H ~ FFH AV PAL Fixed 00H ~ FFH AV SECAM Fixed 00H ~ FFH AV NT3.58 Fixed 00H ~ FFH AV NT4.43 Fixed 00H ~ FFH AV PAL60 Fixed 00H ~ FFH Samsung Electronics...
  • Page 72 Condition Range A/V, S-VHS Component Hotel Mode Fixed ON/OFF PWR Om CH Fixed 0 ~ 99 PWR On Vol. Fixed 0 ~ 100 Max Volume Fixed 0 ~ 100 L.Key Lock Fixed ON/OFF PWR On Src Fixed AV/S-VHS/.. Samsung Electronics...
  • Page 73 0 ~ 255 W2 B Offset Fixed 0 ~ 255 MOV Cont. Fixed 0 ~ 255 MOV Bright. Fixed 0 ~ 255 MOV Color Fixed 0 ~ 255 MOV Sharp. Fixed 0 ~ 255 11. Checksum OC04 12. Reset 3-10 Samsung Electronics...

  • Page 74: Service Adjustment

    2) Select "AV CALIBRATION" again in CALIBRAION MENU. 3) After Completing Calibration, come out "Av success". OSD on the screen (bottom-side) for about 3 seconds. Source AV : PAL composite, Component : 1280*720/60Hz PC : 1024*768/60Hz ( Chess Pattern ) Samsung Electronics 3-11...
  • Page 75 H/L : 270/280 +/- 2 L/L : 270/280 +/- 3, 2.1 Ft +/-0.05 Ft ( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD ) 3-4-3 Conditions for Measurement 1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
  • Page 76 - Adjust red offset ('x') and blue offset ('y') to the color coordinates. Low light Measurement point ( SAMSUNG WHITE BALANCE Adjustment PATTERN with FPD ) * Do not adjust green offset data. d) 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.

  • Page 77: Software Upgrade

    1. Installthe Flash Downloader Connect Set (Service Jack) and Jig Cable to execute Program Update. 2. Flash Downloader program update - Before Turning on the set, Click "connect" which is under of OSD Screen. - Turn on the Set. 3-14 Samsung Electronics...

  • Page 78: Replacements & Calibration

    ASSY PDP P-ADDRESS E BUFF BOARD BN96-03104A ASSY PDP P-ADDRESS F BUFF BOARD BN96-03105A ※ When replacing the SMPS (DC DC) or PDP panel, you have to check the voltage printed on the panel sticker and adjust it. Samsung Electronics 3-15...
  • Page 79 (If you do not adjust the voltage, an abnormal discharge symptom may appear.) Value Board Adjustment SMPS-MAIN Vset SMPS-DC/DC Vscan -190 Voltage Label SMPS-MAIN SMPS-DC/DC 2. A point of adjusting SMPS-MAIN voltage. Vs Adjustment Vs Test point Va Test point Va Adjustment 3-16 Samsung Electronics...
  • Page 80 Alignment & Adjustment 3. A point of adjusting SMPS-DC/DC. Test Point Vset (Middle) Vscan (Right) Vscan/Vset Adjustment Point Adjustment Point Ve Test Point * Use base chassis of PDP panel as GND point. Samsung Electronics 3-17...
  • Page 81 MEMO 3-18 Samsung Electronics...
  • Page 82 Exploded View & Part List 4. Exploded View & Part List 4-1 PL42E7SX/RCL You can search for the updated part code through ITSELF web site. URL:http://itself.sec.samsung.co.kr Loc. No. Code No. Description Specification Q'ty SA/SNA Remark FT532 2901-001374 FILTER-EMI AC LINE 250V,6A,UL/SA/VDE,0.1...

  • Page 83: Troubleshooting

    - 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...

  • Page 84: Checkpoints By Error Mode

    Is the Fuse (F801S) of the Main SMPS Replace Fuse (F801S) Power Input Part blown? Main SMPS CN804-1 Pin 3 : STB 5V Replace the Main SMPS Pin 8 PS-ON : Check to see if it is 0V Replace the Main Board Samsung Electronics...
  • Page 85 SMPS, CN of the X Main Board, and CN of the Y Main Board, a spark may be generated by the electric charge of the high capacity capacitor. Therefore, wait some time after separating the power cord from the unit. Samsung Electronics...
  • Page 86 SMPS, CN of the X Main Board, and CN of the Y Main Board, a spark may be generated by the electric charge of the high capacity capacitor. Therefore, wait some time after separ ating the power cord from the unit. Samsung Electronics...
  • Page 87 Main Board and the speaker replace the cable, if necessary. properly connected? Is the output voltage of SMPS Replace the Main SMPS normal? (CN803 #5) Is the speaker output terminal Replace the Main Board of the Main Board normal? Replace the Speaker Samsung Electronics...
  • Page 88 - Check the tuner output signal (CVBS). - Check the power input of the Main board. Troubleshooting Procedures Is the antenna connection setting Configure properly properly configured? Check CN101 pin2 for +33V Replace the Main SMPS Replace the Main Board Samsung Electronics...
  • Page 89 Check the U101, D108 STD_5V 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 (Main Board or Driver Board) or Cable. Samsung Electronics...
  • Page 90 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...
  • Page 91 Replace the Board FUSE Replace the Board F5002 for Vs F4003 for Vs Q5008 Q4010 SHORT SHORT FET/ FET/ Q5009 Q4011 Replace the Board Replace the Board Q5010 DIODE DIODE Q4012 Q5013 Q4015 Y-MAIN X-MAIN Normal State Normal State Samsung Electronics...
  • Page 92 F5001 for VDD FUSE Replace the Board FUSE Replace the Board F4003 for Vs F5002 for Vs Q4010 Q5008 SHORT SHORT Q4011 Q5009 Replace the Board Replace the Board Q4012 Q5010 Q4015 Q5013 Y-MAIN X-MAIN Normal State Normal State 6-10 Samsung Electronics...
  • Page 93 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 a defect on FPC Done (Defect is from Y-buffer) Samsung Electronics 6-11...
  • Page 94 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 6-12 Samsung Electronics...

  • Page 95: Troubleshooting Procedures By Ass'y

    11 ASSY BOARD P-POWER&IR BN96-02050D Power Button Board The remote control does not work properly, the LED does not work properly. 12 ASSY BOARD P-SIDE AV BN96-03075A Side AV Board The AV2 and S-VIDEO2 modes do not work properly Samsung Electronics 6-13...
  • Page 96 MEMO 6-14 Samsung Electronics...

  • Page 97: Pl42E7Sx/Rcl Service Item

    Electrical Part List 5. Electrical Part List 5-1 PL42E7SX/RCL Service Item You can search for the updated part code through ITSELF web site. URL:http://itself.sec.samsung.co.kr Loc. No. Code No. Description Specification Q'ty SA/SNA Remark M0003 BN96-02746C ASSY STAND P-SET RIGHT 42E7,HIPS HB,BLK(...
  • Page 98 MEMO Samsung Electronics...

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