LG 50PC1DR Owners Manual

LG 50PC1DR - LG - 50" Plasma TV Manual

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  • LG 50PC1DR | Owners Manual - Page 1
    Troubleshooting 50PC1DR Plasma Display Panel Troubleshooting - 2007 1
  • LG 50PC1DR | Owners Manual - Page 2
    Troubleshooting Overview of Topics to be Discussed •Switch Mode Power Supply •Y SUS Board •Z SUS Board •X Drive Boards Plasma Display Panel Troubleshooting - 2007 2
  • LG 50PC1DR | Owners Manual - Page 3
    Repair 1. Check the appearance of Panel and boards. 2. Check the model label. Verify model names and board model matches. 3. Check details of defective condition and history. Ex) COF long 2-1 fail, address 1 line open, Y b/d trouble, Mal-discharge on screen. Plasma Display Panel Troubleshooting
  • LG 50PC1DR | Owners Manual - Page 4
    Switch Mode Power Supply Troubleshooting This Section of the Presentation will cover troubleshooting the Switch Mode Power Supply for the Single Scan Plasma. Upon completion of the section the technician will have a better understanding of the operation of the Power Supply circuit and will be able
  • LG 50PC1DR | Owners Manual - Page 5
    determine what circuits could be causing the failure. Use your senses Sight, Smell, Touch and Hearing. Look for burned parts and check for possible overheated components. Capacitors will sometimes leak dielectric material and give off a distinct odor. Frequency of power supplies will change with
  • LG 50PC1DR | Owners Manual - Page 6
    when turned off for approximately 2 hours and go into Deep Sleep Mode. The unit can be taken out of DS Mode as needed for TVGOS Data. • Standby Operation - Guide Plus has been programmed or a Cable Card is installed and unit is powered off the SMPS will output 19v,12v, 6v, 5vS, and 3.3v Supplies
  • LG 50PC1DR | Owners Manual - Page 7
    Mode Power Supply (SMPS) Voltages Troubleshooting • VS 196v used to drive the Horizontal Grid Voltage, Y SUS, and Z SUS. Measured from pins 8, 9, and 10 of connector P805 to chassis ground. Adjusted at VR951 • VA 60v used to drive the Vertical Grid Voltage, X Boards and in the IPM Circuits to
  • LG 50PC1DR | Owners Manual - Page 8
    Power Supply VS Adjust VA Adjust VS VA Source VA 5v VS Source Control IC 3.3v Adjust 19v Audio Supply 12V,6V, 5V and 3.3V Source Standby Circuit P802 P803 P800 Plasma Display Panel Troubleshooting - 2007 8 Troubleshooting 380 Volt Supply AC Input Circuit
  • LG 50PC1DR | Owners Manual - Page 9
    Power Supply Low Voltage Connectors Troubleshooting P800 PIN1 P803 PIN 1 P802 PIN 1 P800 1) AC-D 2) RL-ON 3) S-5V 4) GND 5) VS-ON 6) 5V-D 7) M5V-ON 10) 12V 11) GND 12) GND P802 1) 19V 2) 19V 3) GND 4) GND 5) 6V 6) GND 7) 3.3V 8) GND 9) 12V 10) GND Plasma Display Panel Troubleshooting - 2007 9
  • LG 50PC1DR | Owners Manual - Page 10
    Voltage Standby Power Supply T501 HS1 D101 D102 AC Relay RL101 AC Relay RL102 120VAC D506 D501 TH01 TH02 Troubleshooting D951 VS D952 D953 D271 6V D261 Q252 D251 D202 VA 5V-M Q281 5V HS6 U261 Q223 D221 3.3v AC Input F101 AC INPUT Circuit Plasma Display Panel Troubleshooting - 2007 10
  • LG 50PC1DR | Owners Manual - Page 11
    Troubleshooting Y SUSTAIN BOARD Troubleshooting This Section of the Presentation will cover troubleshooting the Y SUS Board for the Single Scan Plasma. Upon completion of the Section the technician will have a better understanding of the operation of the circuit and will be able to locate voltage
  • LG 50PC1DR | Owners Manual - Page 12
    Note Troubleshooting • The following voltages and waveforms should be adjusted in the order they are presented. • Always adjust the DC levels before the waveform adjustments to most accurately set the Plasma Display Panel. Voltmeter Adjustments to Y SUS • VSC 115v Used to shape the Y Drive
  • LG 50PC1DR | Owners Manual - Page 13
    Y SUSTAIN • Ramp Up Used to shape the Y Drive Waveform by changing the pitch of the Top Ramp • V SET DN Used to shape the Y Drive Waveform by changing the pitch of the Bottom Ramp • V SET UP Used to shape the Y Drive waveform by leveling the Top Ramp Plasma Display Panel Troubleshooting - 2007 13
  • LG 50PC1DR | Owners Manual - Page 14
    Troubleshooting Single Scan Panel *Waveforms may vary with different Y_SUSTAIN PCB part #'s. Normal Waveform RAMP UP Panel Waveform Adjustment 35 micro seconds Scope TP 000 - . Readings are taken with the probe set to 10x1. Ground VSET DN +VSC Plasma Display Panel Troubleshooting - 2007 14
  • LG 50PC1DR | Owners Manual - Page 15
    Troubleshooting Single Scan Panel Panel Waveform Adjustment Ramp up too high Noticeable low level color distortion with the Ramp_up too high. Ramp up too low Plasma Display Panel Troubleshooting - 2007 Noticeable low level color distortion with the Ramp_up too low. 15
  • LG 50PC1DR | Owners Manual - Page 16
    Troubleshooting Single Scan Panel Panel Waveform Adjustment Vset DN too low The center begins to wash out and arc due to decreased Vset DN time. Vset DN too high Plasma Display Panel Troubleshooting - 2007 All of the center washes out due to increased Vset_DN time. 16
  • LG 50PC1DR | Owners Manual - Page 17
    out and arc due to Vset UP Peeking too late and alters the start of the Vset DN phase. Vset UP too low Plasma Display Panel Troubleshooting - 2007 Very little alteration to the picture, the wave form indicates a distorted Vset UP. The peek widens due to the Vset UP peeking too quickly. 17
  • LG 50PC1DR | Owners Manual - Page 18
    Panel Waveform Adjustment -VY too low (-154vdc) Colors and the image will bloom slightly and the unit will have difficulty with clean frame changes in a quickly altering image. -VY too high (-227vdc) Plasma Display Panel Troubleshooting - 2007 The center begins to wash out and arc due to - VY
  • LG 50PC1DR | Owners Manual - Page 19
    VSC too low (77 Volts) The image will show very little change but there will Be some distortion in a quickly changing image. VSC too high (140 Volts) Plasma Display Panel Troubleshooting - 2007 The image will show very little change but there will Be some distortion in a quickly changing image
  • LG 50PC1DR | Owners Manual - Page 20
    SINGLE SCAN PDP 50PX3 DVM ZBIAS adjustment: On the Z-Sustain PCB With the DVM across R92 adjust the potentiometer till the DVM reads 93 vdc. Plasma Display Panel Troubleshooting - 2007 20
  • LG 50PC1DR | Owners Manual - Page 21
    Y sustain board Troubleshooting Control Board supplies Logic Signals to the Y Sustain Board for processing, which then develops the signal to drive both of the Y Drive Boards sequentially with the Y Output Waveform for PDP operation. Logic signals from Control Board < Probe connect point to
  • LG 50PC1DR | Owners Manual - Page 22
    Board Y Sustain Board Z SUS Board Distributes 5v VA VS Distributes 5v VA Power Supply Board - SMPS Receive 5V,Va, Vs from SMPS Distributes 5v IPM generates Sustain Waveform Generates Vsc, -Vy from 5v VA Vs by transformer. Bottom Left X Board FETs amplify Sustain Waveform Troubleshooting
  • LG 50PC1DR | Owners Manual - Page 23
    ER_UP ER_DN SUS_DN SUS_DN There are two IPMs used in 50PC1DR on the Y Sustain Board. 1. SUS IPM (IC202) 2. ER IPM (IC201) Role of IPMs 1. Generate Sustain Waveform (square wave) - SUS IPM. 2. Energy Recovery Function (for saving power) - ER IPM. Plasma Display Panel Troubleshooting - 2007 23
  • LG 50PC1DR | Owners Manual - Page 24
    ), ER GRND ( + ) Reverse Test : 1. GND ( - ), Sus-out (＋) 2. Sus-out ( - ), Vs (＋) 3. ER-DN (＋), GRND ( - ) 1.4 4. GRND ( - ), ER-UP ( + ) 1.4 5. 18v ( + ), GRND ( - ) 1.9 6. 5v ( + ), GRND ( - ) .9 Note: ER_HIGH ER_LOW, to ER_lO OPEN in Diode Check Plasma Display Panel Troubleshooting - 2007 24
  • LG 50PC1DR | Owners Manual - Page 25
    normal picture for few minutes) (If SUS IPM failed, top portion of Drive Waveform will be missing ) FET Fail No display ( loss of Drive Waveform - Power FETs on Y Sustain Board ) No display Fuse * 5V- SMT fuse Vs * Va, Vs fuse-ceramic fuse Va 5V Plasma Display Panel Troubleshooting - 2007
  • LG 50PC1DR | Owners Manual - Page 26
    Y SUS Troubleshooting Plasma Display Panel Troubleshooting - 2007 26
  • LG 50PC1DR | Owners Manual - Page 27
    P3 5v floating ground Supplies Logic signals to Y Drive Boards to sequentially scan the Horizontal Grid floating ground 64v Y SUS output 64v floating ground 18v IPM Measured at R61 Oscilloscope Waveform adjust test point Plasma Display Panel Troubleshooting - 2007 P2 27 P11 to Z SUS Board 5v VA VS
  • LG 50PC1DR | Owners Manual - Page 28
    Single Scan Y Drive Output Waveform Troubleshooting Plasma Display Panel Troubleshooting - 2007 28
  • LG 50PC1DR | Owners Manual - Page 29
    10K • SUS_UP to Chassis Ground 700K • SUS_DN to Chassis Ground 700K • Y SUS out at B1 to Floating Ground 2 Meg (infinite in Diode Mode) • VSC Test Points Measure in Diode Mode • -VY Test Points Measure in Diode Mode • ER_UP to ER_DN 20K Plasma Display Panel Troubleshooting - 2007 29
  • LG 50PC1DR | Owners Manual - Page 30
    Y DRIVE BOARD Troubleshooting Plasma Display Panel Troubleshooting - 2007 30
  • LG 50PC1DR | Owners Manual - Page 31
    Y DRIVE Boards Troubleshooting Y-Drive Board works as a path supplying Sustain waveform and Reset waveform which is made in Y SUSTAIN B/D to the Panel through SCAN DRIVER IC Supplies a waveform which selects horizontal electrode sequentially. * 50PC1DR uses 12 DRIVER ICs (TOP, BOTTOM: 6 each) HVO
  • LG 50PC1DR | Owners Manual - Page 32
    Condition Visual check of YDT-BTM Horizontal bar displays across the screen due to no Scan Pulse caused by Scan IC Failure. Failures can be found, sometimes by a visual inspection of the Y DRIVE Board scan IC's . Defect : Horizontal Bar or Shutdown Plasma Display Panel Troubleshooting - 2007 32
  • LG 50PC1DR | Owners Manual - Page 33
    SUSTAIN Board Troubleshooting This Section of the Presentation will cover troubleshooting the Z-SUS Board Assembly. Upon completion of this section the Technician will have a better understanding of the circuit and be able to locate voltage and resistance test points needed for troubleshooting and
  • LG 50PC1DR | Owners Manual - Page 34
    Input Voltages from the Y SUS Board Troubleshooting VS Supplied to IC7 the SUS_IPM through coil FL152 and to the Primary Winding of Transformer T2 of the Z Bias Circuit. Input measured from P151 pin 12 to chassis ground. VA Supplied to the ER_IPM through parallel resistors R91 and R9 and through
  • LG 50PC1DR | Owners Manual - Page 35
    Z SUSTAIN Board IC7 SUS_ IPM IC5 ER_IPM Troubleshooting R111, R25 Z BIAS TP VS P151 VA 5v 18v IPM at right side of R100 P1 from control board Timing, Data, and control signals Plasma Display Panel Troubleshooting - 2007 35 Z BIAS Adjust Control P151 and P152 Supplies VA and 5v to X Boards
  • LG 50PC1DR | Owners Manual - Page 36
    Z SUSTAIN Voltage Distribution From Y SUS Board FL152 Troubleshooting To X Drive Boards Plasma Display Panel Troubleshooting - 2007 36
  • LG 50PC1DR | Owners Manual - Page 37
    Troubleshooting Waveforms Z SUSTAIN Board • Input signals to the Z SUS Board at P1 from the Control Board are routed through IC1 and IC82 to the IPM. These signals are used to develop the Z SUS Drive Waveform to drive the PDP. Plasma Display Panel Troubleshooting - 2007 37
  • LG 50PC1DR | Owners Manual - Page 38
    Troubleshooting Z Board SUS Board Waveform inputs from the Control Board NOTE: These voltages will vary due to changes in design and variations in the PDP panel. PIN1 PIN2 PIN3 Pin 1 PIN4 PIN5 PIN6 PIN7 PIN8 PIN9 PIN10 PIN11 PIN12 Plasma Display Panel Troubleshooting - 2007 38
  • LG 50PC1DR | Owners Manual - Page 39
    discharge in the panel by receiving LOGIC signals from the CONTROL B/D. This waveform is supplied to the panel through FPC(Z). Troubleshooting < Probe connect point to Oscilloscope to check Z wave form > Z DRIVE Waveform Z Vs 95 95V Vs V Plasma Display Panel Troubleshooting - 2007 39
  • LG 50PC1DR | Owners Manual - Page 40
    , VA, VS Y SUS Board Troubleshooting Distributes Logic Signals Control Board Receive 5v, VA, VS Distribute 5v, VA X Board Center and Right IPM generates erase, sustain waveform Generates Z Bias FET Makes Drive waveform Display Panel Via FPC (flexible printed circuit ) Plasma Display Panel
  • LG 50PC1DR | Owners Manual - Page 41
    IPM ( Intelligent Power Module) on the Z sustain board of the 50PC1DR. One is SUS IPM (IC7) , another is ER IPM (IC5) Role of IPM 1.Generate sustain and erase waveform( square wave ) - SUS IPM. 2.Energy recovery function ( for saving power) - ER IPM. Plasma Display Panel Troubleshooting - 2007 41
  • LG 50PC1DR | Owners Manual - Page 42
    ▶ Major defect : IPM fail, cable connection. Defect name Description of defect Part IPM Fail Dark display P1 Cable connection If the cable was not connected, There is no display Plasma Display Panel Troubleshooting - 2007 42 Troubleshooting Defect display < Dark display > < No display >
  • LG 50PC1DR | Owners Manual - Page 43
    FPC (Flexible Printed Circuit) Removal for Z Board Replacement Troubleshooting Pull out Lock as shown in circles Pull Lock apart to remove ER_UP to Chassis Ground 10K • ER_DN to Chassis Ground 10K *Measurements made with the board disconnected Plasma Display Panel Troubleshooting - 2007 43
  • LG 50PC1DR | Owners Manual - Page 44
    Troubleshooting CONTROL Board Troubleshooting Plasma Display Panel Troubleshooting - 2007 44
  • LG 50PC1DR | Owners Manual - Page 45
    display diode can be checked. Left picture shows 7 periods which means normal temperature Green = OFF Yellow = ON Weight D15 - 8 D16 - 4 D17 - 2 D18 - 1 TEST Pattern AUTOGEN P1 Connector MCM (Micro Control Module) Plasma Display Panel Troubleshooting - 2007 LG Part Number Label 45
  • LG 50PC1DR | Owners Manual - Page 46
    Control Board 1. Check LED ( Normal status lighting or not ) 2. CHECK OSC X1 output. (100MHZ) 3. Check CTRL to avoid physical shock. Probe 3.3vdc Test point +5v GND Check FET's 1.8vdc Troubleshooting 100.0 MHZ 2.4vdc 5vdc Plasma Display Panel Troubleshooting - 2007 46 Input voltage
  • LG 50PC1DR | Owners Manual - Page 47
    of defect Part Solution Troubleshooting Defect display CONTROL IC Regular vertical lines < MCM > Replace Control Board Connector No display or Partly no display < Connector > Reseat Control Board Connectors Oscilator LVDS poor connection No picture < Oscillator > Remove LVDS Cable and
  • LG 50PC1DR | Owners Manual - Page 48
    X Drive Board Troubleshooting Voltages Supplied to the X Boards • VA From the Z SUS Board to both the Center • and Right X Boards. • VA From the Y SUS Board to the Left X Board • 5v From the Z SUS Board to both the Center and • Right X Boards. • 5v From the Y SUS Board to the Left X Board.
  • LG 50PC1DR | Owners Manual - Page 49
    be a Control Board problem. Troubleshooting Diagram of Control Board Control Board to X Board Address Signal Flow This will show Signal Flow Distribution to help determine the failed part depending on where the failure is on the screen. MCM Buffer IC Array 16 line 16 line Plasma Display Panel
  • LG 50PC1DR | Owners Manual - Page 50
    TCP (Tape Carrier Package) : supplies RGB 6bit signal to the PDP by connecting the PAD Electrode of the PANEL with the X Board. Troubleshooting X_B/D Frame Rear panel Front panel Connector TCP IC TCP Plasma Display Panel Troubleshooting - 2007 Front side 50 Behind side
  • LG 50PC1DR | Owners Manual - Page 51
    Center X Drive Board Troubleshooting P200 P208 P210 Output to TCP ICs Plasma Display Panel Troubleshooting - 2007 51
  • LG 50PC1DR | Owners Manual - Page 52
    X Board Connections on Connector P208 Troubleshooting FL209 VA (7,8,9) 1 Thru 6 Grnd 10 Thru 14 Grnd RGB Logic Signals 15 Thru 23 24 CLOCK RGB Logic Signals 31 Thru 34 36 FL208 VA (42,43,44) 25 THRU 30 Grnd 35 Grnd 37 Thru 41 Grnd 45 Thru 50 Grnd 1 50 Output to TCP IC Plasma
  • LG 50PC1DR | Owners Manual - Page 53
    from the Control Board P200 IC201 IC202 C221 C222 C223 L201 L202 IC203 VA 5V GND D201 D202 P210 FL201 C241 FL214 FL215 FL212 FL213 FL210 FL211 FL208 FL209 FL206 FL207 FL204 FL205 FL202 FL203 RGB Address Signals out to TCP IC's and PDP Plasma Display Panel Troubleshooting - 2007 53
  • LG 50PC1DR | Owners Manual - Page 54
    Signal from the Control Board and controls the Address Pulse (generates Address Discharge) by an ON/OFF operation, and supplies the waveform to TCP (data). X LEFT B/D COF Separating X RIGHT B/D Lift up lock as shown in the Picture. Plasma Display Panel Troubleshooting - 2007 54 Remove TCP
  • LG 50PC1DR | Owners Manual - Page 55
    of defect Part Troubleshooting Defect display Vertical abnormal display Poor connection Vertical abnormal display < Poor connection > Attached particle Vertical line ( similar with IC fail ) Check for attached particle or poor connection either one is possible. Plasma Display Panel
  • LG 50PC1DR | Owners Manual - Page 56
    , if found remove with compressed air or soft fabric. If 1 vertical line can not be resolved by this, then the defect can not be repaired and the PDP will need to be replaced. Make sure the Ribbon Cable is securely installed Attached particle Plasma Display Panel Troubleshooting - 2007 56
  • LG 50PC1DR | Owners Manual - Page 57
    Board : If the buffer IC has failed, there can be vertical lines. Troubleshooting The defect can not be repaired if the vertical line is caused by TCP IC failure. Root cause of TCP IC failure is ESD or Surge. < Structure of TCP with X ray analyzer > < Failure viewed with microscope > Plasma
  • LG 50PC1DR | Owners Manual - Page 58
    collection of cables in PDP circuit , Troubleshooting ⑥ ⑦ ⑧ ⑫ ⑭ ⑬ ⑤ ⑪ ⑨⑩ Cable No. Purpose 8 9 10 2 3 4 1 Supply Va,5V to X B/D RGB Video signal FET driving signal to make the Y waveform 5 13 14 12 11 5V,15V for IC and FET driving 5V supply Va,Vs for Y and Z board FET driving signal to
  • LG 50PC1DR | Owners Manual - Page 59
    When each cable disconnected. Troubleshooting Cable No. 8 9 10 2 3 4 1 5 13 12 14 11 6 7 When disconnected The section of the X board where the cable is disconnected will not show the screen. The section of the X board where the cable is disconnected will not show the screen. No display (no Y
  • LG 50PC1DR | Owners Manual - Page 60
    TP ER_I0 VS_2 ER_ LOW ER_UP ER_DN -VY IC303 IC302 VSET DN Circuits HS4 PS1 VS IC2 15v SUS_ OUT GND ER_ HIGH SUS_UP SUS_DN ER_l0 VS_2 ER_ LOW 5v ER_UP ER_DN P7 GND 5V VA Logic signals from the Control BD for IPMs and Y Drive IC10 IC19 Plasma Display Panel Troubleshooting - 2007 60
  • LG 50PC1DR | Owners Manual - Page 61
    How to check IPM (Dual Scan) (Resistance 'Diode Check', board removed from set) For both IC2 and IC7 Troubleshooting Forward Test : 1. +VS ( - ), SUS_OUT ( + ) 2. SUS_OUT ( CH GND ( - ) 1.42 Note: ER_HIGH to ER_IO ( OPEN ) SUS_OUT to ER_IO ( SHORT ) Plasma Display Panel Troubleshooting - 2007 61
  • LG 50PC1DR | Owners Manual - Page 62
    Module check point Troubleshooting Y SUSTAIN Board VSC / -Vy Measurement Y-BOARD VSC C51 Both ends -Vy R36 Both ends Y-BOARD VSC R53 Both ends -Vy R78 Both ends Plasma Display Panel Troubleshooting - 2007 62
  • LG 50PC1DR | Owners Manual - Page 63
    Module check point Troubleshooting Z SUSTAIN Board VzBias Measurement Z-BOARD Vzbias GND-Q18 Z-BOARD Vzbias R23 Both ends Plasma Display Panel Troubleshooting - 2007 63
  • LG 50PC1DR | Owners Manual - Page 64
    PDP 50PX2 Vsc test point, Adjustment -Vy test point, Adjustment Variations in the PCB design will result in variations in The signal driving the PDP panel. Refer to the label on the Y-SUS PCB match this number to the correct signal in this manual. Plasma Display Panel Troubleshooting - 2007 64
  • LG 50PC1DR | Owners Manual - Page 65
    DUAL SCAN PDP 50PX2 Normal Y-SUS PCB #038C Plasma Display Panel Troubleshooting - 2007 65
  • LG 50PC1DR | Owners Manual - Page 66
    V-Set DN too low DUAL SCAN PDP 50PX2 V-Set DN too high All of the center washes out due to decreased Vset_DN time. Plasma Display Panel Troubleshooting - 2007 The center begins to wash out and arc due to decreased Vset_DN time. 66
  • LG 50PC1DR | Owners Manual - Page 67
    center begins to wash out and ark due to Vset_UP Peeking too late and alters the start of the Vset_DN phase. Plasma Display Panel Troubleshooting - 2007 Very little alteration to the picture, the wave form indicates a distorted Vset_UP. The peek widens due to the Vset_UP peeking too quickly. 67
  • LG 50PC1DR | Owners Manual - Page 68
    Ramp-UP too low DUAL SCAN PDP 50PX2 Ramp-UP too high Noticeable low level color distortion with the Ramp_up too low. Plasma Display Panel Troubleshooting - 2007 Noticeable low level color distortion with the Ramp_up too high. 68
  • LG 50PC1DR | Owners Manual - Page 69
    DUAL SCAN PDP 50PX2 Normal Y-SUS PCB #038B Plasma Display Panel Troubleshooting - 2007 69
  • LG 50PC1DR | Owners Manual - Page 70
    Vset-DN too low DUAL SCAN PDP 50PX2 Vset-DN too high All of the center washes out due to decreased Vset_DN time. Plasma Display Panel Troubleshooting - 2007 The center begins to wash out and arc due to decreased Vset_DN time. 70
  • LG 50PC1DR | Owners Manual - Page 71
    center begins to wash out and ark due to Vset_UP Peeking too late and alters the start of the Vset_DN phase. Plasma Display Panel Troubleshooting - 2007 Very little alteration to the picture, the wave form indicates a distorted Vset_UP. The peek widens due to the Vset_UP peeking too quickly. 71
  • LG 50PC1DR | Owners Manual - Page 72
    Ramp-UP too low DUAL SCAN PDP 50PX2 Ramp-UP too high Noticeable low level color distortion with the Ramp_up too low. Plasma Display Panel Troubleshooting - 2007 Noticeable low level color distortion with the Ramp_up too high. 72
  • LG 50PC1DR | Owners Manual - Page 73
    DVR Operation and Troubleshooting Plasma Display Panel Troubleshooting - 2007 73
  • LG 50PC1DR | Owners Manual - Page 74
    Theory of Operation Plasma Display Panel Troubleshooting - 2007 74
  • LG 50PC1DR | Owners Manual - Page 75
    ). They later became known as "hard disks" to distinguish them from floppy disks. Hard disks have a hard platter that holds the magnetic medium, as opposed to the flexible plastic film found in tapes and floppies. HDD, circa 1979 - an early 8" disk Plasma Display Panel Troubleshooting - 2007 75
  • LG 50PC1DR | Owners Manual - Page 76
    of the world's hard disks are manufactured by just a handful of large firms: Seagate, Maxtor (acquired by Seagate in May 2006), Western Digital, Samsung, and Hitachi which owns the former disk manufacturing division of IBM. 2.5 inch laptop hard disk Plasma Display Panel Troubleshooting - 2007 76
  • LG 50PC1DR | Owners Manual - Page 77
    Drive from Seagate is built into several models of LG televisions and provides about 15 hours of HDTV recording or 66 hours of SDTV recording without the need of any external accessories. It is a 3.5 inch serial ATA (Advanced Technology Attachment) Hard Drive. Plasma Display Panel Troubleshooting
  • LG 50PC1DR | Owners Manual - Page 78
    to soft material LG recently started replacing the HDD that was designed for PC use (P/N:6744B00040A) with a low-noise HDD designed for A/V use (P/N:6744B91953A). The original HDD is shown on the right and the upgraded version is shown on the left. Plasma Display Panel Troubleshooting - 2007 78
  • LG 50PC1DR | Owners Manual - Page 79
    Hard Drive Control The HDD is controlled by IC1002 on the digital board Plasma Display Panel Troubleshooting - 2007 79
  • LG 50PC1DR | Owners Manual - Page 80
    PCI to 2-port Serial ATA host controller. Based on a 32-bit 66 MHz PCI interface, the SiI3512 provides support for two independent Serial ATA devices. The second Serial ATA output is used to control the memory card reader if the unit has that option. Plasma Display Panel Troubleshooting - 2007 80
  • LG 50PC1DR | Owners Manual - Page 81
    CPU IC100 is the AMCC PowerPC. It controls the Serial Host controller IC1002. Plasma Display Panel Troubleshooting - 2007 81
  • LG 50PC1DR | Owners Manual - Page 82
    compatible and possesses all of the qualities necessary to make powerful and cost effective system-on-a-chip designs a reality. Optimized interfaces to the Core Connect bus structure provide for a high bandwidth, low latency system interface solution. Plasma Display Panel Troubleshooting - 2007 82
  • LG 50PC1DR | Owners Manual - Page 83
    Let's put it all together CPU IC100 HDD/DVR PCI Bus Serial Host controller IC1002 Serial ATA Bus Plasma Display Panel Troubleshooting - 2007 83
  • LG 50PC1DR | Owners Manual - Page 84
    50/60PY2DR-UA VIDEO PATH - DVR SDRAM (IC302, IC303) CPU PPC405GPr (IC100) PCI BUS SATA controller siI3512 (IC1500) CON (CN1500) CON (CN1501) ll LGDT1102 C EXT (IC401) TO PDP Module CON (CN1102) IEP-ll LGDP441 1 (IC1305) LVDS THC63LVD103 (IC1302) Plasma Display Panel Troubleshooting - 2007 84
  • LG 50PC1DR | Owners Manual - Page 85
    Here's what we can do Watch Live TV Without buffering Watch Live TV with 1 hour buffering Watch Delayed Live TV (1 hour max) Play Recorded show Record one show and play a recorded Analog Channel and watch another Analog Channel at the same time. Plasma Display Panel Troubleshooting - 2007 85
  • LG 50PC1DR | Owners Manual - Page 86
    X Studio is the Customer Interface to the DVR • Home Menu Consists of: - Recorded TV - TV Guide - Schedule - Manual Rec - TV Menu • Home Menu Consists of: - Recorded TV - Photo List - Music List - TV Guide - Reservation - IEEE 1394 - TV Setup • When you press X Studio, it displays the home menu
  • LG 50PC1DR | Owners Manual - Page 87
    has been used to Record 60 minutes of SDTV Record 1 hour of HDTV (1080I) In this case you can see that the HDD shows 34 minutes of HD time but 84 minutes of SD time has been used to record 60 minutes of HDTV NOTE: These times will vary Plasma Display Panel Troubleshooting - 2007 87
  • LG 50PC1DR | Owners Manual - Page 88
    To make the Progress Bar disappear you can either press ENTER again, press EXIT or simply wait about 10 seconds The bar will be blue during delayed playback The bar will be red during recording The bar will be green during playback of a recorded show Plasma Display Panel Troubleshooting - 2007 88
  • LG 50PC1DR | Owners Manual - Page 89
    HDD ERROR MESSAGES Plasma Display Panel Troubleshooting - 2007 89
  • LG 50PC1DR | Owners Manual - Page 90
    cannot start. Copy protected. Timer recording cannot start. DVR device error. Cannot display Auto Demo when timer recording recording. Set current time for timer recording. Note HDD problem. Bad sector or bad connection or other Signal strength is Plasma Display Panel Troubleshooting - 2007 90
  • LG 50PC1DR | Owners Manual - Page 91
    weak Timer record failed due to DVR device error. Do you want to problem. Hardware error occurred. Maximum number of recorded program is 500. User must delete recorded program to start record. Record length must be longer than 10 seconds Temperature is too low Plasma Display Panel Troubleshooting
  • LG 50PC1DR | Owners Manual - Page 92
    Message - From Gemstar Guide PlayList Cannot play Recorded problem. Bad sector or bad connection or other HDD problem. Clip edit is not saved HDD error recovery program has started Fatal DVR error a HDD data is deleted Fatal DVR error all HDD data is deleted Plasma Display Panel Troubleshooting
  • LG 50PC1DR | Owners Manual - Page 93
    problem. Recording stops Copy protection detected during recording. Copy protection detected before recording starts. "Yes" will stop record. "No" will continue record. In both cases, display will be turned another digital channel is not possible Plasma Display Panel Troubleshooting - 2007 93
  • LG 50PC1DR | Owners Manual - Page 94
    due to copy protection. Note HDD problem. Bad sector or bad connection or other Cannot Timeshift audio only channel Cannot Timeshift audio only channel HDD problem. Bad sector or bad connection or than 10 seconds Maximum number of clip editing is 10. Plasma Display Panel Troubleshooting - 2007 94
  • LG 50PC1DR | Owners Manual - Page 95
    detected. Please contact service center. Unknown HDD detection error. No signal for DVR function. Signal is too weak to enter Recording or Timeshift Invalid input signal for DVR function. DVR mode is possible for only RF, Composite and 1394 signal Plasma Display Panel Troubleshooting - 2007 95
  • LG 50PC1DR | Owners Manual - Page 96
    Cannot read Damaged file or memory card memory card 1 is not detected correctly memory card 2 is not detected correctly Must press eject button and select memory card before removing Must press eject button and select memory card before removing Plasma Display Panel Troubleshooting - 2007 96
  • LG 50PC1DR | Owners Manual - Page 97
    program in progress Unknown HDD detection error. DVR initialization in progress DVR initialization cannot start. HDD error recovery program starts HDD error. "Yes" will start format Unknown HDD detection error. HDD error recovery program started Plasma Display Panel Troubleshooting - 2007 97
  • LG 50PC1DR | Owners Manual - Page 98
    causing a video or audio problem you can simply unplug it • You MUST unplug the TV before disconnecting or reconnecting the HDD • During initial power up the TV will detect whether or not the HDD is there and will route the audio and video as needed Plasma Display Panel Troubleshooting - 2007 98
  • LG 50PC1DR | Owners Manual - Page 99
    (Data) Check TPNII LGDT1303 1. Check HDD Power cable. #1: 5V, #4:12V 2. Check HDD Signal cable (SATA) 3. Check SiI3512(IC1500) inputs: Power pins, Osc • Check LED150 blinking • Check PCI bus 4. Check CPLD(IC900) inputs: 5. Check CPLD(IC900) outputs: Plasma Display Panel Troubleshooting - 2007 99
  • LG 50PC1DR | Owners Manual - Page 100
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Plasma Display Panel Troubleshooting - 2007
Troubleshooting
50PC1DR