Related Manuals for Panasonic TC-32LX70/70
Summary of Contents for Panasonic TC-32LX70/70
- Page 1 Panasonic Service and Technology Company Technical Guide TC-32LX70/700, TC37LZ85, and TC-32LX85 LCD Display Television National Training...
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Page 2: Over-Current Protection Circuit
Jean Magloire Panasonic Service and Technology Company National Training Copyright © 2008 by Panasonic Services Company All rights reserved. Unauthorized copying and distribution is a violation of law. Warning This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. -
Page 3: Table Of Contents
Table of Contents Subject Page # Subject Page # Topics Self-Check Menu 2007 LCD TV Specifications Check Point P.C.B Layout (LX700) Serviceman Mode P.C.B Layout (LX70) Serviceman Mode Menu and Navigation P.C.B Layout (LX700 Pictorial) Adjustment Data P.C.B Layout (LX700 Connectors) SRV-TOOL P.C.B Layout (LX700 LVDS Connector) - Page 4 Table of Contents Purposely Left Blank 2008 LCD Television Models Power LED Blinks 6 or 7 Times Full HD TC-LZ85 & HD TC-LX85 Series Power LED Blinks 8 or 9 Times Chassis structure (37 Full HD type) Power LED Blinks 1 Time (TC-32LX85) Chassis structure (37 HD type) Power LED Blinks 3 Times (TC-32LX85) Signal Circuit Block Diagram...
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Page 5: Topics
Topics Models Comparison Boards Layout Power supply/Standby/Power on Troubleshooting SOS Circuit Video/Audio Processing Circuit Panel Drive Circuit Service Man Mode Self-Check 10.Reset 11.Adjustments 12.Service Information for 2008 models... - Page 6 Purposely Left Blank Purposely left blank...
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Page 7: 2007 Lcd Tv Specifications
2007 LCD TV Specifications TC-32LX700 TC-32LX70 VIDEO Screen Size Diagonal (inches) Aspect Ratio 16:9 16:9 Number of Pixels 1,049,088 (1,366 x 768) 1,049,088 (1,366 x 768) Brightness (Panel Luminance) 500 cd/m2 500 cd/m2 Display Capability (1080p, 1080i, 720p, 480P) Motion Picture Pro —... -
Page 8: Layout (Lx700)
P.C.B Layout (LX700) P.C.B Layout (LX700) 32LX700 32/26LX600 KEY Control KEY Control (HDMI) (HDMI) Differences from LX600: GS board for SD card slot is added. The inverter PCB of the LX700 is visible. -
Page 9: Layout (Lx70)
P.C.B Layout (LX70) P.C.B Layout (LX70) 32/26LX60 32/26LX70 KEY Control KEY Control (HDMI) (HDMI) Differences from LX60: Board structure is almost same. -
Page 10: Layout (Lx700 Pictorial)
P.C.B Layout (LX700 Pictorial) P.C.B Layout (LX700 Pictorial) Key Control GS Board V Board AP Board G Board A Board DT Board P Board Inverter PCB... -
Page 11: Layout (Lx700 Connectors)
P.C.B Layout (LX700 Connectors) P.C.B Layout (LX700 Connectors) AP4/A4 AP3/A3 CN501 Panel CCFLTs... -
Page 12: Layout (Lx700 Lvds Connector)
P.C.B Layout (LX700 LVDS Connector) P.C.B Layout (LX700 LVDS Connector) Remove the 4 Screws and the metal plate to expose the LVDS Connector. LVDS Connector LVDS Connector... -
Page 13: Tc-32Lx700 Board Description
TC-32LX700 Board Description Board Description Part Number A-Board Main (Rear Terminal, AV Switch, MCU, Audio & TNPH0683S Video Processor, LVDS) (Exchange Only) AP-Board DC-DC, Power Switch TNPA4155ABS DT-Board Digital Tuner (Exchange Only) TNAG172S G-Board Video 3, Headphone Jack TNPA4266S GS-Board SD Card Slot TNPA4206S V-Board... - Page 14 Differences from Current models Differences from Current models LX600 LX700 LX60 LX70 HQ1L(*) LVDS TX(*) FPGA VCTP AUDIO AUDIO SWITCH Peaks Lite2 SWITCH VIDEO SWITCH ATSC ATSC HDMI HDMI (CEC) Peaks Lite (CEC) * 32LX700 only Differences from LX600/60: 1. Peaks Lite2 and VIDEO SW are introduced instead of VCTP, FPGA and Peaks Lite . 2.
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Page 15: P Board - Main Power Board
P Board – Main Power Board P Board – Main Power Board T801 D821... - Page 16 P Board – Main Power Board P Board – Main Power Board When AC is applied to the TV, the Standby circuit of the P board outputs 5Vdc to the AP board. The STB5V passes through the AP board and enters the A board. On the A board The STB5V is converted to 3.3V to power the system control circuit for standby operation.
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Page 17: Main Mpu (Power On Commands)
Main MPU (Power On Commands) Main MPU (Power On Commands) - Page 18 Main MPU (Power On Commands) Main MPU (Power On Commands) The STB 5V output of the P board passes through the AP board and enters the A board when the unit is plugged into the AC outlet. IC5702 of the A board converts the STB 5V to 3.3V to power the system control circuit. Activation of the power switch causes transistor Q5712 to turn off and output STB 3.3V to pin 18 of the MPU.
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Page 19: Standby Operation
Standby Operation Standby Operation... - Page 20 Standby Operation Standby Operation When the main power switch is activated, it is sensed on the A board by the MPU IC1100. The TV_SUB_ON signal is subsequently issued in response on pin 8 of connector A4/AP4. It turns on the transistors Q7224 and Q7223 to output the “Relay voltage on pin 15 of connector AP2/P2.
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Page 21: Sub Voltages And Over-Voltage Protection
SUB Voltages and Over voltage Protection SUB Voltages and Over voltage Protection The AP Board is responsible for the regulation, distribution and dissemination of all secondary voltages derived from the 24V output of the P Board. During standby operation, the 24V output of the P board biases the transistor Q7208 into operation, causing its collector to become “low”. -
Page 22: Main Voltages And Over-Voltage Protection
Main Voltages and Over voltage Protection Main Voltages and Over voltage Protection When the unit is turned on, the TV_Main_On command (high) of IC1100 biases the transistor Q7212 into operation, causing its collector to go “low”. The low at the collector of Q7212 causes the transistor Q7225 to turn off. -
Page 23: Inverter_On Command And Protection
Inverter_On Command and Protection Inverter_On Command and Protection The INV_ON/OFF command (high) of the MPU, IC1100 of the A board, passes through the AP and P boards before entering the LCD panel. On the LCD panel, it triggers the operation of the inverter to produce the 120V AC that powers the backlight CCFLTs. - Page 24 Purposely Left Blank Purposely left blank...
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Page 25: Video Process Block Diagram
Video Process Block Diagram Video Process Block Diagram... - Page 26 Video Process Block Diagram Video Process Block Diagram The main function of the A board is to select and process one of the incoming video signals. Video inputs, component video Input, and the composite video output of the tuner are all connected to IC3001 for selection. The video output signal of the switch can be in any of the three formats: Video, Y/C, or Y, Pb, Pr.
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Page 27: Audio Process Block Diagram
Audio Process Block Diagram Audio Process Block Diagram... - Page 28 Audio Process Block Diagram Audio Process Block Diagram IC3101 of the A board handles the audio selection of most inputs. Analog audio of the tuner and audio signals from composite, component, and DVI inputs are connected to IC3101 for selection. The output of IC3101 enters IC2106 and undergoes analog to digital conversion.
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Page 29: Mpu Sos Inputs And Blink Codes
MPU SOS Inputs and Blink Codes MPU SOS Inputs and Blink Codes... - Page 30 MPU SOS Inputs and Blink Codes MPU SOS Inputs and Blink Codes One Blink: One blink of the power LED indicates a problem in the inverter circuit located on the LCD panel. The inverter board is not to be repaired in the field. Therefore a replacement is required. Three Blinks: Three blinks of the power LED indicates an over-current or over-voltage condition in one of the DC supplies of the AP board.
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Page 31: Over-Current Protection Circuit
Over Current Protection Circuit Over Current Protection Circuit... - Page 32 Over Current Protection Circuit Over Current Protection Circuit The protection shutdown circuit is designed to monitor for a short or loss of the SUB_9V, SOUND_VCC, BT30V, and the Panel VCC sources. If any of these voltage sources goes low, Q7210 turns on. As a result, the collector of Q7210 goes high to signal a shutdown condition to IC1100 on the A board.
- Page 33 Over Current Protection Circuit 2 Over Current Protection Circuit 2...
- Page 34 Over Current Protection Circuit 2 Over Current Protection Circuit 2 Sound_VCC Protection During normal operation, the 24 volt output of the P board biases the transistor Q7208 into conduction, causing its collector to become low. The low at the collector of Q7208 causes the transistor Q7214 to turn off. When the PANEL_MAIN_ON command (high) is issued Q7212 turns on.
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Page 35: Power Led Timing Table
Power LED Timing Table... - Page 36 Power LED Timing Table...
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Page 37: Self-Check And Reset Function
Self-Check and Reset Function Self-Check Function: 1. Checks the communication IIC bus lines 2. Provides a SOS History To Access the Self-Check Mode: Turn the TV on and select an To Access the Self-Check Mode: Turn the TV on and select an active channel. -
Page 38: Self-Check Menu
Self-Check Menu SELF CHECK ----.XXXXXX-XXXXXX MEM1 HQ1L MEM2 ADAV TUN1 TUN2 GenX4 Copyright 2007 Matsushita Electric Industrial Co., LTD... -
Page 39: Check Point
Check Point A-Board... -
Page 40: Serviceman Mode
Serviceman Mode To enter the Serviceman Mode, turn the TV on and while To enter the Serviceman Mode, turn the TV on and while pressing the “VOLUME ( - )” button on the main unit, press the pressing the “VOLUME ( - )” button on the main unit, press the “RECALL”... -
Page 41: Serviceman Mode Menu And Navigation
Serviceman Mode Menu and Navigation SERVICE Peaks Soft 0.270 ADJUST Peaks EEP 1.00 WB-ADJ 0PTION LSI DATA 0.00.36 RM-SET GenX SOFT 0.23.00 SRV-TOOL GenX EEP 0.40.00 GenX COR 0.00.00 NOTE: This is HQ1L EEP not part of the Menu. Key command “1”... -
Page 42: Adjustment Data
Adjustment Data MAIN ITEM ADJUST DATA 0000 CONTRAST SUB ITEM YMAX “1” or “2” button of the remote control to select the main Adj. item “3” or “4” button of the remote control to select the sub Adj. Item “Vol. (-)” or” Vol. (+)” to change the data Note: Record the original data on a sheet of paper prior to making any adjustment. -
Page 43: Srv-Tool
SRV-TOOL SRV-TOOL TD2Microcode: 81c0000e Flash ROM: 1- 227E PCTC: 00 . 00 . 00 . 00 . 00 Time 000040:40 Count 0000049 To access: 1. Select “SRV-TOOL” in the Serviceman Mode menu. 2. Press the [OK] button on the remote control. -
Page 44: Display Of Sos History
SRV-TOOL Display of SOS History SOS History (Number of LED blinking) indication. From the left side; Last SOS, before Last, third occurrence before last, 2 occurrence after shipment, 1 occurrence after shipment. This indication will be cleared by entering the “Self-check mode. The unit will be forced to factory shipment setting”. -
Page 45: Voltage Chart Of Ap-Board
Voltage Chart of AP-board AP-board VOLTAGE TEST POINT SPECIFICATION CONNECTOR 24.0 ± 1.2V TP7904 AP2 _PIN 1, 2, 3 5.12 ± 0.25V SUB_5V TP7211 AP3_PIN 21, 22 9.27 ± 0.45V SUB_9V TP7213 AP3_PIN 8, 17, 18 31.5 ± 2.5V BT_30V TP7601 AP3_PIN 7 3.38 ±... -
Page 46: Voltage Chart Of P And A Boards
Voltage Chart of P and A boards P-board VOLTAGE TEST POINT SPECIFICATION 5.0 ± 0.5V STB_5V TP823 A-board VOLTAGE TEST POINT SPECIFICATION 3.3 ± 0.16V STB3.3V TP7006 1.26 ± 0.06V SUB1.2V TP5601 1.83 ± 0.09V SUB1.8V TP5602 3.3 ± 0.16V SUB3.3V TP5600 1.22 ±... -
Page 47: Voltage Chart Of Dt Board
Voltage Chart of DT board A-board DT-board VOLTAGE TEST POINT SPECIFICATION A- BOARD 3.3 ± 0.16V SUB_3.3V TP8332 1.26 ± 0.06V SUB_1.2V TP8328 5.12 ± 0.25V SUB_5V TP8326 31.5 ± 2.5V 30V_A TP8331... - Page 48 Purposely Left Blank Purposely left blank...
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Page 49: Troubleshooting Signal Problems
Troubleshooting Signal Problems Troubleshooting Signal Problems We can classify the signal problem into three categories. It is important to check all functions to determine whether both picture and sound problem exist. Checking all functions helps us determine whether the cause of the problem is the panel, the video processor or sound processor. -
Page 50: Picture Ng And Sound Ok (Lx700/Lx70 )
Picture and Sound OK (LX700/LX70 ) Picture and Sound OK (LX700/LX70 ) Is there a No picture from picture from any A Board the AV Terminal of the inputs? Is there No Picture A Board a picture from the from Analog TV AV Terminals? See slide “No Picture from TV Reception”... -
Page 51: Picture Ok And Sound Ng (Lx700/Lx70)
Picture OK and Sound NG (LX700/LX70) Picture OK and Sound NG (LX700/LX70) Is there No sound sound from any of the from any of the AV A Board input sources? terminals. Is sound No sound from any of the AV Terminals A Board from analog TV DT Board... -
Page 52: Picture Ng And Sound Ng (Lx700/Lx70 )
Picture NG Sound NG (LX700/LX70 ) Picture NG Sound NG (LX700/LX70 ) Input Source : Line where problem might occur check IC4510 HDMI I/F Analog HDMI1 PROCES Digital ＳＷ AV Terminal Analog TV HDMI Picture & A Board Picture NG Sound OK? TU8300 IC4207... -
Page 53: No Picture From Tv Reception
No Picture from TV Reception See the troubleshooting Is there video from flowchart for No any of the inputs? picture. Check for the BT30V, DTV_9V, and SUB_5V on connector AP3 of the AP board. Refer to Slide 45 for test point locations. -
Page 54: No Picture
No Picture See the troubleshooting Is there picture from flowchart for No any of the inputs? picture. Check for the BT30V, DTV_9V, and SUB_5V on connector AP3 of the AP board. Refer to Slide 45 for test point locations. Check the cathode of D7601 Is the Are DTV 9V on the AP Board. -
Page 55: No Video, Dark Blue Screen
No Video, Dark Blue Screen Try using a different video input source. Try the Tuner, Component, S-Video or HDMI input. Check the video input connections and Does any termination points for a possible cold input solder joint or connection problem. work? Check for the BT 30V, SUB 9V, &, SUB5V sources on connector AP3... - Page 56 No Video, Dark Blue Screen (Continued) From the last page Remove the metal plate From where it sits on the A board in order to access the LVDS connector. There are four screws that need to be removed. See slide 12. Confirm the connection of the LVDS Connector (CN A2).
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Page 57: No Audio
No Audio A Board Try using a different audio input source. Try the Tuner, Component, S Video or HDMI input. Are other Audio inputs OK ? Determine which audio input is defective. Check for poor solder Check the L/R speaker output connections in the vicinity of the connection. -
Page 58: No Power
No Power Turn on the Main Power Switch. Refer to the AP Board test points Refer to the AP Board test points Slide 45. Slide 45. Can an audible click be heard from the Power relay? Check for 4.5V on pin 15 of connector AP2 (RELAY.) Is there Standby 5V... - Page 59 No Power From Last Page. Make sure connector A4 of the A board is seated properly. Unit will exhibit this condition if the connector is unplugged. Does the unit Replace the A board. come on? Problem solved...
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Page 60: Power Led Blinks One Time (Inv_Sos)
Power LED Blinks One Time (INV_SOS) Power LED Blinks One Time (INV_SOS) Power LED blinks once Is connector Connect connector P5. P5 properly seated? Turn the unit on. Problem solved Does the unit Power up? Does pin 4 of CN P5 Change the A board. -
Page 61: Power Led Blinks Three Times (Tv_Sos)
Power LED Blinks Three Times (TV_SOS) Power LED Blinks Three Times (TV_SOS) Conduct a voltage check on the AP Board right before shutdown. Is there Is there 105Vdc between Does 24V at Pin 1 Replace the P board. pins 1 and 3 of CN pin 1 of CN of CN P6? A4/ AP4 go... -
Page 62: Power Led Blinks Four Times
Power LED Blinks Four Times Power LED Blinks Four Times Conduct all voltage Confirm the connection of CN AP3, P3, and P6. checks before shutdown. the connectors Reseat the connectors. properly seated? Turn the Problem solved unit on. Does the unit Power up? Is there Is there... -
Page 63: 2008 Lcd Television Models
2008 LCD Television Models Technical Guide TC-37LZ85U/TC32LX85 LCD Display Television... -
Page 64: Full Hd Tc-Lz85 & Hd Tc-Lx85 Series
Full HD TC-LZ85 & HD TC-LX85 Series VIERA Technology for Ultimate Full-HD Picture Quality •178° Wide Viewing Angle with IPS Alpha Panel •10,000:1 High Contrast with Intelligent Scene Controller •x.v.Color •Deep Color (HDMI™ 1.3) Other Features For Comfortable TVs Life •Built-in SD Memory Card Slot with HD Photo Viewer ®... -
Page 65: Chassis Structure (37 Full Hd Type)
Chassis structure (37 Full HD type) Chassis structure (37 Full HD type) 2007 Model (ex 37LZ700D) 2008 Model (ex 37LZ85 LCD Panel LCD Panel Notice H and DG boards are integrated to A board The H and DG board are integrated to A board of the 2008 model. Therefore the Input switch, system control, and signal processing are performed by the A board. -
Page 66: Chassis Structure (37 Hd Type)
Chassis structure (37 HD type) Chassis structure (37 HD type) 2008 Model (ex 32LX85 series) 2007 Model (ex 32LX70 series) LCD Panel LCD Panel Notice AP board is now merged with the P board The A, P, and V boards are the only printed circuit boards used in the 2008 models. -
Page 67: Signal Circuit Block Diagram
Signal Circuit Block Diagram Signal Circuit Block Diagram The A board is responsible for video input selection, video processing, and audio processing. The LVDS output signal is provided to the LCD panel for display and the audio signal to the speakers, headphone jack, and optical output jack. -
Page 68: Tc-32Lx85 / Tc37Lz85 Signal Circuit Block Diagram
32LX85 / TC37LZ85 Signal Circuit Block Diagram 32LX85 / TC37LZ85 Signal Circuit Block Diagram The A board is responsible for video input selection, video processing, and audio processing. The LVDS output signal is provided to the LCD panel for display and the audio signal to the speakers, headphone jack, and optical output jack. -
Page 69: Tc37Lz85 Signal Circuit Block Diagram
TC37LZ85 Signal Circuit Block Diagram TC37LZ85 Signal Circuit Block Diagram... - Page 70 TC37LZ85 Signal Circuit Block Diagram TC37LZ85 Signal Circuit Block Diagram The main function of the A board is to select and process incoming video signals. Video inputs, Component Video Input, and the composite video output of the tuner are all connected to IC3301 for selection. The video output signal of the switch can be in any of the three analog formats: Video, Y/C, or Y, Pb, Pr.
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Page 71: Tc32Lx85 Signal Circuit Block Diagram
TC32LX85 Signal Circuit Block Diagram TC32LX85 Signal Circuit Block Diagram... - Page 72 TC32LX85 Signal Circuit Block Diagram TC32LX85 Signal Circuit Block Diagram The main function of the A board is to select and process incoming video signals. The HDMI receiver located inside IC4003 converts the HDMI signal into YUV data. Analog signals such as; Video inputs, component video Input, composite video output of the tuner are all connected to IC4003 for selection.
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Page 73: Tc37Lz85 Audio Circuit Block Diagram
TC37LZ85 Audio Circuit Block Diagram TC37LZ85 Audio Circuit Block Diagram... - Page 74 TC37LZ85 Audio Circuit Block Diagram TC37LZ85 Audio Circuit Block Diagram IC3301 of the A board handles the audio selection of most inputs. Analog audio of the tuner and audio signals from composite, component, and DVI inputs are connected to IC3301 for selection. The output of IC3301 enters IC2106 and undergoes analog to digital conversion.
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Page 75: Tc32Lx85 Audio Circuit Block Diagram
TC32LX85 Audio Circuit Block Diagram TC32LX85 Audio Circuit Block Diagram... - Page 76 TC32LX85 Audio Circuit Block Diagram TC32LX85 Audio Circuit Block Diagram IC4003 of the A board handles the audio process of all inputs. Analog audio of the tuner and audio signals from composite, component, and DVI inputs are connected to IC4003 for selection and process.. IC4503 converts the incoming HDMI audio into serial data and outputs to IC4003.
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Page 77: Power Supply Overview
Power Supply Overview Power Supply Overview... -
Page 78: Power Supply Description
37LZ85 Power Supply Description 37LZ85 Power Supply Description... - Page 79 37LZ85 Power Supply Description 37LZ85 Power Supply Description When AC is applied to the TV, the Standby circuit of the P board outputs STB5V to the A board. On the A board The STB5V is converted to 3.3V to power the system control circuit (not shown in the diagram) for standby operation. The STB3.3V is also applied to the Remote Control receiver and the power LED on the V board.
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Page 80: Self-Check And Reset Function
Self Check and Reset Function Self Check and Reset Function... -
Page 81: Sos And Power Led Indication
SOS and Power LED Indication SOS and Power LED Indication... -
Page 82: Power Led Blinks 1 Time
Power LED Blinks 1 Time Power LED Blinks 1 Time Pin 4 of connector P2 should toggle low after the backlights of the LCD panel turn on. If the backlights do not come on or pin 4 of CN P2 does not toggle low, Reseat the connectors A4, P6, and P2. Confirm the presence of 370Vdc at pin 1 of connector P5 and 12V at pin 1 of connector P2 before replacing the LCD panel. -
Page 83: Power Led Blinks 3 Times
Power LED Blinks 3 Times Power LED Blinks 3 Times Pin 10 of connector P7/A3 outputs a high when an over-current condition is detected. On the power supply board, locate the test points for the SUB9V, SOUND17V and BT30V. Using an ohmmeter, determine if there is a short between each of the test-point and ground. -
Page 84: Power Led Blinks 4 Or 5 Times
Power LED Blinks 4 or 5 Times Power LED Blinks 4 or 5 Times The DTV12V and SUB9V lines are monitored by the MCU. If the voltage corresponding to the number of blinks is missing or shorted, the MCU shuts down the unit and blinks the Power LED. Reseat the connectors P7 and A3 and turn on the unit. -
Page 85: Power Led Blinks 6 Or 7 Times
Power LED Blinks 6 or 7 Times Power LED Blinks 6 or 7 Times The SUB5V and SUB3.3V lines are monitored by the MCU. When the SUB5V is missing or shorted, the MCU shuts down the unit and blinks the Power LED. Reseat the connectors P7 and A3 and turn on the unit. If the shutdown persists, use a voltmeter to measure the voltage. -
Page 86: Power Led Blinks 8 Or 9 Times
Power LED Blinks 8 or 9 Times Power LED Blinks 8 or 9 Times On the A board, the MCU (IC1100) monitors the SOUND+17V line and the operation of the audio power amplifier IC2301. If IC2301, or the 17V lines develops a short to ground, a high is provided to the MCU to trigger a SOS condition. -
Page 87: Power Led Blinks 1 Time (Tc-32Lx85)
Power LED Blinks 1 Time (TC 32LX85) Power LED Blinks 1 Time (TC 32LX85) Pin 5 of connector A16 should toggle low after the backlights of the LCD panel turn on. If the backlights do not come on or pin 5 of CN A16 does not toggle low, Reseat the connectors A3, P3, and P7. Confirm the presence of 24Vdc at pin 1 of connector P7 and 12V at pin 28 of connector A2 before replacing the LCD panel. -
Page 88: Power Led Blinks 3 Times (Tc-32Lx85)
Power LED Blinks 3 Times (TC 32LX85) Power LED Blinks 3 Times (TC 32LX85) Pin 10 of connector P3/A3 outputs a high when an over-current condition is detected. On the power supply board, locate the test points for the SUB9V, SOUND15V, BT30V, and PANEL12V. Using an ohmmeter, determine if there is a short between each of the test-point and ground. -
Page 89: Power Led Blinks 4 Or 5 Times (Tc-32Lx85)
Power LED Blinks 4 or 5 Times (TC 32LX85) Power LED Blinks 4 or 5 Times (TC 32LX85) The DTV12V and SUB9V lines are monitored by the MCU. If the voltage corresponding to the number of blinks is missing or shorted, the MCU shuts down the unit and blinks the Power LED. Reseat the connectors P3 and A3 and turn on the unit. -
Page 90: Power Led Blinks 6 Or 7 Times (Tc-32Lx85)
Power LED Blinks 6 or 7 Times (TC 32LX85) Power LED Blinks 6 or 7 Times (TC 32LX85) The SUB5V and SUB3.3V lines are monitored by the MCU. When the SUB5V is missing or shorted, the MCU shuts down the unit and blinks the Power LED. Reseat the connectors P7 and A3 and turn on the unit. If the shutdown persists, use a voltmeter to measure the voltage. -
Page 91: Power Led Blinks 8 Or 9 Times (Tc-32Lx85)
Power LED Blinks 8 or 9 Times (TC 32LX85) Power LED Blinks 8 or 9 Times (TC 32LX85) On the A board, the MCU (IC4003) monitors the SOUND+17V line and the operation of the audio power amplifier IC2301. If IC2301, or the 15V lines develops a short to ground, a high is provided to the MCU to trigger a SOS condition. -
Page 92: Picture Defect
Picture Defect (1) Picture Defect (1) (1)Part of the screen Trouble Where is Upper the abnormal picture displayed ? Panel Upper or Lower Lower Panel Right Panel Left or Right Left Panel Vertical or Horizontal line Panel (2)All over the screen Abnormal color Many vertical lines OSD trouble... - Page 93 Picture Defect (2) Picture Defect (2) <Actual Symptom> <Symptom>Upper or Lower Defect Symptom: Upper trouble Abnormality means No Picture, Picture noise, abnormal picture, Full Horizontal line etc. <NG Area> Panel Drive Panel Drive Ａ Panel Tuner Drive Panel Input Drive Terminal Panel Drive...
- Page 94 Picture Defect (3) Picture Defect (3) <Actual Symptom> <Symptom>Left or Right half defect Symptom: Right half picture trouble No Picture, Picture noise, Full Horizontal line, etc. <NG Area> Panel Drive Panel Drive Ａ Panel Tuner Drive Panel Input Drive Terminal Panel Signal Drive...
- Page 95 Picture Defect (4) Picture Defect (4) <Actual Symptom> <Symptom>Horizontal line Symptom: Horizontal line <NG Area> Panel Drive Panel Drive Ａ Panel Tuner Drive Panel Input Drive Terminal Panel Drive Signal Processor LCD panel <Defective parts> Panel...
- Page 96 Picture Defect (5) Picture Defect (5) <Actual Symptom> <Symptom>Vertical line Symptom: Thin vertical line <NG Area> Ａ Panel Drive Panel Drive Panel Tuner Drive Panel Input Drive Terminal Panel Drive Signal Processor LCD panel <Defective parts> Panel...
- Page 97 Picture Defect (6) Picture Defect (6) <Actual Symptom> <Symptom>Vertical line noise Symptom: Vertical noise <NG Area> Ａ Panel Drive Panel Drive Panel Tuner Drive Panel Input Vertical noise Drive Terminal Panel Drive Signal Processor LCD panel <Defective parts> Panel or A board...
- Page 98 Picture Defect (7) Picture Defect (7) <Actual Symptom> <Actual Symptom> <Symptom>Sub picture NG Symptom: Sub picture NG <NG Area> Panel Drive Panel Drive Ａ Note: There is not sub picture function Panel Tuner on some models. Drive Panel Input Drive Terminal Panel Drive...
- Page 99 Picture Defect (8) Picture Defect (8) <Actual Symptom> <Symptom>Non uniformity color Symptom: Irregular color <NG Area> Ａ Panel Drive Panel Drive Panel Tuner Drive Panel Input Drive Terminal Panel Drive Signal Processor LCD panel <Defective parts> Panel...
- Page 100 Picture Defect (9) Picture Defect (9) <Actual Symptom> <Symptom>Vertical lines all over screen Symptom: Vertical line all over screen <NG Area> Ａ Panel Drive Panel Drive Panel Tuner Drive Panel Input Drive Terminal Panel Drive Signal Processor LCD panel <Defective parts> Mainly A board, in some cases panel...
- Page 101 Picture Defect (10) Picture Defect (10) <Actual Symptom> <Actual Symptom> <Symptom>O.S.D. trouble Symptom: OSD trouble (Color is normal) <NG Area> Ａ Panel Drive Panel Drive Panel Tuner Drive Panel Input Drive Terminal Panel Drive Signal Processor LCD panel O.S.D. Mixture <Defective parts>...
- Page 102 Picture Defect (11) Picture Defect (11) <Actual Symptom> <Actual Symptom> <Actual Symptom> <Symptom>Abnormal color Symptom: Abnormal color <NG Area> Ａ Panel Drive Panel Drive Panel Tuner Drive Panel Input Drive Terminal Panel Drive Signal Processor LCD panel <Defective parts> A board...
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Page 103: Lcd Panel
Picture Defect (12) Picture Defect (12) <Actual Symptom> <Symptom>No Picture with Normal Sound No Picture and Normal Sound Reason: A board, Panel, <NG Area> All A board Is picture from Analog TV Tuner area all input sources Picture is NG Panel Drive Panel Drive Ａ... -
Page 104: Sound Defect
Sound Defect Sound Defect <Symptom> Sound Trouble A board Is sound Analog TV Ａ Tuner area from all input sources sound is NG Speaker Tuner Digital Digital TV Demodulator sound is NG area Input Opt Audio Terminal HDMI HDMI Decoder area sound is NG Signal Processor... -
Page 105: Service Information For 2008 Models
Service Information for 2008 Models Service Information for 2008 Models 2008 LCD Display Televisions 1. Panel Free Run System 2. Data copy to SD card 3. Local Maintenance 4. Picture Refresh Mode... -
Page 106: Internal Pattern Generator
Internal Pattern Generator (1) Internal Pattern Generator (1) - Page 107 Internal Pattern Generator (2) Internal Pattern Generator (2)
- Page 108 Internal Pattern Generator (3) Internal Pattern Generator (3)
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Page 109: Copy From The Tv To The Sd Card
Copy data to SD card (1) Copy data to SD card (1) - Page 110 Copy data to SD card (2) Copy data to SD card (2)
- Page 111 Copy data to SD card (3) Copy data to SD card (3)
- Page 112 Copy data to SD card (4) Copy data to SD card (4)
- Page 113 Copy data to SD card (5) Copy data to SD card (5)
- Page 114 Copy data to SD card (6) Copy data to SD card (6)
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Page 115: Copy Data From The Sd Card To The Tv
Copy Data from the SD Card to the TV (1) Copy Data from the SD Card to the TV (1) - Page 116 Copy Data from the SD Card to the TV (2) Copy Data from the SD Card to the TV (2)
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Page 117: Copy Self Check Data To The Sd Card
Copy Self Check Data to the SD Card (1) Copy Self Check Data to the SD Card (1) - Page 118 Copy Self Check Data to the SD Card (2) Copy Self Check Data to the SD Card (2)
- Page 119 Copy Self Check Data to the SD Card (3) Copy Self Check Data to the SD Card (3)
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Page 120: Local Maintenance
Local Maintenance (1) Local Maintenance (1) - Page 121 Local Maintenance (2) Local Maintenance (2)
- Page 122 Local Maintenance (3) Local Maintenance (3)
- Page 123 Local Maintenance (4) Local Maintenance (4)
- Page 124 Local Maintenance (5) Local Maintenance (5)
- Page 125 Local Maintenance (6) Local Maintenance (6)
- Page 126 Local Maintenance (7) Local Maintenance (7)
- Page 127 Local Maintenance (8) Local Maintenance (8)
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Page 128: Picture Refresh Mode
Picture Refresh Mode Picture Refresh Mode...