Panasonic TH-37LRT12U Service Manual
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Panasonic TH-37LRT12U Service Manual

High definition hospitality lcd display
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TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
2 Warning -------------------------------------------------------------- 4
2.2. About lead free solder (PbF)---------------------------- 5
3 Service Navigation ----------------------------------------------- 6
3.2. Different P.C.B. -------------------------------------------- 6
3.3. Service Hint (TH-32LRT12U-A)------------------------ 7
3.5. Applicable signals ----------------------------------------- 9
4 Specifications ----------------------------------------------------10
4.1. TH-32LRT12U-A------------------------------------------10
4.2. TH-37LRT12U/M/A--------------------------------------- 11
5 Factory Mode -----------------------------------------------------12
5.1. How to enter into Factory Mode ----------------------12
5.1.1. Key command ----------------------------------------12
5.1.2. Contents of adjustment mode --------------------12
5.2. How to exit -------------------------------------------------13
High Definition Hospitality LCD Display
Model No.
PAGE
6 Operating Instructions ---------------------------------------- 14
6.1. On-Screen Menu Display ------------------------------ 14
6.2. Hotel Mode ------------------------------------------------ 15
6.2.1. Hotel mode setup ----------------------------------- 15
6.2.2. Hotel mode menu list ------------------------------- 16
7 Troubleshooting Guide --------------------------------------- 17
7.1. No Power--------------------------------------------------- 17
7.2. No Picture-------------------------------------------------- 17
8.1. TH-32LRT12U-A Instructions ------------------------- 18
8.1.2. Removal of EMI Case Unit------------------------ 18
8.1.4. Removal of Operation Button -------------------- 19
8.1.6. Removal of Speaker (L, R)------------------------ 19
8.2. TH-37LRT12U/M/A Instructions ---------------------- 20
Order Number PTWTV0909003CE
TH-37LRT12U/M/A
TH-32LRT12U-A
and RS232 PCB ------------------------------------- 19
© 2009 Panasonic Taiwan Co., Ltd. All rights
reserved. Unauthorized copying and distribution is a
violation of law.
PAGE

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Summary of Contents for Panasonic TH-37LRT12U

  • Page 1: Table Of Contents

    5.1.2. Contents of adjustment mode --------------------12 8.1.7. Removal of LCD Panel and Cabinet ----------- 20 5.2. How to exit -------------------------------------------------13 8.2. TH-37LRT12U/M/A Instructions ---------------------- 20 © 2009 Panasonic Taiwan Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2 10.1. System Block Diagram---------------------------------- 30 10.2. Power Unit Block Diagram for TH-32LRT12U- A -------------------------------------------------------------- 31 10.3. Panel Block Diagram for TH-32LRT12U-A -------- 32 10.4. Power Unit Block Diagram for TH-37LRT12U/ M/A----------------------------------------------------------- 33 10.5. Power Unit Block Diagram for TH-37LRT12U/ M/A----------------------------------------------------------- 34 11 Wiring Connection Diagram --------------------------------- 35 11.1.

  • Page 3: Safety Precautions

    TH-32LRT12U-A * TH-37LRT12U/M/A 1 Safety Precautions 1.1. General Guidelines 1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials. 2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units.

  • Page 4: Warning

    TH-32LRT12U-A TH-37LRT12U/M/A 2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip”...

  • Page 5: About Lead Free Solder (Pbf)

    TH-32LRT12U-A * TH-37LRT12U/M/A 2.2. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

  • Page 6: Service Navigation

    TH-32LRT12U-A TH-37LRT12U/M/A 3 Service Navigation 3.1. Important Notice 3.1.1. MANUFACTURING ID NO. This service manual is for the MANUFACTURING ID NO. indicated in the label at side and the model name plate of the unit. Label at side Model Name Plate 3.2.

  • Page 7: Service Hint (Th-32Lrt12U-A)

    TH-32LRT12U-A * TH-37LRT12U/M/A 3.3. Service Hint TH-32LRT12 U-A Remove the Rear Cover Back Cover AC Cord Pedestal Assy 1. Remove: 15 screws ( ) XTN4+15JFZ 3 screws ( ) XTB4+10FFZ 1 screw ( ) THT4CM010K 4 screws ( ) XYN4+F11FZ 2.

  • Page 8: Service Hint (Th-37Lrt12U/M/A)

    TH-32LRT12U-A TH-37LRT12U/M/A 3.4. Service Hint TH-37LRT12 U/M/A Remove the Rear Cover Back Cover AC Cord 1. Remove: 14 screws ( ) XTB4+15JFZ 2 screws ( ) XYN4+F10FZ 1 screw ( ) THT4CM010K 2. Remove AC Cord and Back Cover POWER...

  • Page 9: Applicable Signals

    TH-32LRT12U-A * TH-37LRT12U/M/A 3.5. Applicable signals Applicable input signals for Mini D-sub 15P Signal name 640 x 480 @ 60 Hz 31.47 59.94 25.18 640 x 480 @ 72 Hz 37.86 72.81 31.5 640 x 480 @ 75 Hz 37.50 75.00...

  • Page 10: Specifications

    TH-32LRT12U-A TH-37LRT12U/M/A 4 Specifications 4.1. TH-32LRT12U-A Power Source 110 - 127 V AC 50/60 Hz (TH-32LRT12U-A) Power Consumption Power on 155 W Stand-by condition 1.0 W (TH-32LRT12U-A) Aspect Ratio 16:9 Screen size 27.5" (698 mm) (W) x 15.4" (392 mm) (H) x 31.5" (800 mm) (diagonal) (No.of pixels)

  • Page 11: Th-37Lrt12U/M/A

    TH-32LRT12U-A * TH-37LRT12U/M/A 4.2. TH-37LRT12U/M/A Power Source 110 - 127 V AC 50/60 Hz (TH-37LRT12U) 220 - 240 V AC, 50/60 Hz (TH-37LRT12A/M) Power Consumption Power on 190 W Stand-by condition 1.0 W (TH-37LRT12U) 1.5 W (TH-37LRT12A/M) Aspect Ratio 16:9 Screen size 32.2"...

  • Page 12: Factory Mode

    TH-32LRT12U-A TH-37LRT12U/M/A 5 Factory Mode 5.1. How to enter into Factory Mode Press and hold [VOL+] button and [VOL-] button of the main unit more than 3 seconds. SPV7100 FACTORY MENU OD OE OF M a i n i t e m...

  • Page 13: How To Exit

    TH-32LRT12U-A * TH-37LRT12U/M/A Main item Sub item Adjustment ADC PR GAIN R channel gain Register ADC Y GAIN G channel gain Register ADC PB GAIN B channel gain Register ADC PR OFFSET R channel OFFSET Register (SPV 7100 ADC) ADC Y OFFSET...

  • Page 14: Operating Instructions

    TH-32LRT12U-A TH-37LRT12U/M/A 6 Operating Instructions 6.1. On-Screen Menu Display Various menus allow you to make settings for the picture, sound, and other functions so that you can enjoy watching Display best suited for you. Unit MENU Press the MENU button.

  • Page 15: Hotel Mode

    TH-32LRT12U-A * TH-37LRT12U/M/A 6.2. Hotel Mode The Hotel Mode is a special function which allows users to configure settings to suit certain locations or applications. 6.2.1. Hotel mode setup MENU Press to display the menu screen. Select Setup Menu. Press to select the Setup menu.

  • Page 16: Hotel Mode Menu List

    TH-32LRT12U-A TH-37LRT12U/M/A 6.2.2. Hotel mode menu list Item Details YPbPr HDMI1 HDMI2 HDMI3 Adjusts the input signal when the unit is turned on. Off: The input signal when the power was last turned off is set. Initial Input Note: This menu is available only when "Input Lock" is "Off".

  • Page 17: Troubleshooting Guide

    TH-32LRT12U-A * TH-37LRT12U/M/A 7 Troubleshooting Guide 7.1. No Power NO POWER Check Check Main board Power board Connector J5 CN10 Check Fuse F1 Connector CN3 CN4 CN7 7.2. No Picture NO PICTURE Check Check Connector J7 CN10 Check Main board...

  • Page 18: Disassembly And Assembly Instructions

    TH-32LRT12U-A TH-37LRT12U/M/A 8 Disassembly and 2. Remove 4 screws ( ), disconnect the connectors and then remove the EMI Case. Assembly Instructions Caution: EMI Case Exchange printed circuit board after confirm parts number. Parts name & Descrption Parts No. MAIN PCB...

  • Page 19: Removal Of The Main Pcb, Power Pcb, And Rs232 Pcb

    TH-32LRT12U-A * TH-37LRT12U/M/A 8.1.3 Removal of the Main PCB, 8.1.5 Removal of IR PCB and AV3 Power PCB, and RS232 PCB 1. Turn the EMI case over and then remove 8 screws. 1. Remove 2 screws ( ) and then remove the IR PCB.

  • Page 20: Removal Of Lcd Panel And Cabinet

    TH-32LRT12U-A TH-37LRT12U/M/A 8.1.7 Removal of LCD Panel and 8.2. TH-37LRT12U/M/A Instructions Cabinet • To disassemble P.C.B., wait for 1 minute after power was off for discharge from electrolysis capacitors. 1. Remove 11 screws and then remove the Panel Fixed. •...

  • Page 21: Removal Of Main Pcb, Power Pcb, And Rs232 Pcb

    TH-32LRT12U-A * TH-37LRT12U/M/A 8.2.4 Removal of Main PCB, Power 8.2.5 Removal of Power SW PCB and PCB, and RS232 PCB Operation PCB 1. Remove 4 screws ( ) and then remove the Power SW 1. Remove screws (x4 ) of the Power PCB.

  • Page 22: Removal Of Lcd Panel And Cabinet

    TH-32LRT12U-A TH-37LRT12U/M/A 8.2.7 Removal of LCD Panel and Cabinet 1. Remove screws (x5 , x4 ) and then remove the Chassis Frame. Chassis Frame 2. Remove screws (x8 , x4 ) and then remove the Panel Fixing. Panel Fixing Panel Fixing...

  • Page 23: Adjustments And Upgrade

    TH-32LRT12U-A * TH-37LRT12U/M/A 9 Adjustments and Upgrade 9.1. White Balance Adjustment 9.2. White Balance Adjustment (TH-32LRT12U-A) (TH-37LRT12U/M/A) 9.1.1. Test Condition 9.2.1. Test Condition 1. Press the "Factory Settings" button on the custom remote 1. Press the "Factory Settings" button on the custom remote or hold down the "Volume+ -"...

  • Page 24: Software Upgrade

    TH-32LRT12U-A TH-37LRT12U/M/A 9.3. Software Upgrade 9.3.1. Main micon eeprom upgrade How to upgrade: 1. Turn on the display and enter into Factory mode. 2. Use an RS232 cable to connect the display with the computer. The way of connection is shown below: 3.
  • Page 25 TH-32LRT12U-A * TH-37LRT12U/M/A 7. Select Option on the main bar, then change the setting values as below: 8. Click Select File to choose the upgrade file. 9. Click Start to begin upgrading. 10. When upgrade is completed, a window appears as shown below. Then unplug the display after at least 3 seconds.
  • Page 26 TH-32LRT12U-A TH-37LRT12U/M/A 11. Plug in the power cord, turn on the display, and enter into Factory mode again to check if software has been upgraded. SPV7100 FACTORY MENU OD OE OF S P V 7 1 0 0 P IC TUR E...

  • Page 27: Sub Micon Upgrade

    TH-32LRT12U-A * TH-37LRT12U/M/A 9.3.2. Sub micon upgrade How to upgrade: 1. Get and install Weltrend MCU ISP software. 2. Use a USB cable, a sub micon tool, and a 15 pin D-SUB cable to connect the LCD TV with the computer. The way of...
  • Page 28 TH-32LRT12U-A TH-37LRT12U/M/A 5. Open Weltrend MCU ISP software on the computer. 6. Select Config on the menu bar then select Interface. Next, adjust the settings as shown below: 7. Click Exit & Save. 8. Select File on the menu bar and select Load File. Next, choose the upgrade file.
  • Page 29 TH-32LRT12U-A * TH-37LRT12U/M/A 9. Click Auto to begin upgrading. 10. When upgrade is completed, enter into Factory mode to check the version as marked below: SPV7100 FACTORY MENU OD OE OF S P V7 1 0 0 PIC TURE R O F FSE T...

  • Page 30: Block Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 10 Block Diagram 10.1. System Block Diagram CAT6353 CAT6353 V58C2128164SB V58C2128164SB V58C2128164SB V58C2128164SB WT6702 WT6702 POWER L5EDD8Q00048 (32") V315B5-L02 L5EDD9Q00008 (37") L5EDD9Q00008 Audio Sound DECODER Audio DAC UART EJTAC Output TX/RX...

  • Page 31: Power Unit Block Diagram For Th-32Lrt12U-A

    TH-32LRT12U-A TH-37LRT12U/M/A 10.2. Power Unit Block Diagram for TH-32LRT12U-A LTV-817 OCP(KIA358F) & OVP PHOTO COUPLER ON/OFF CONTROL INPUT (88Vac~288Vac) LTV-817 Ctrl. IC F/B CONTROL PHOTO COUPLER Gate Dri ver MBRF20100CT RECTIFIER 24V/7.5A FILTER FILTER (FOR EMI) S TML6599D(S T) MAIN...

  • Page 32: Panel Block Diagram For Th-32Lrt12U-A

    TH-32LRT12U-A TH-37LRT12U/M/A 10.3. Panel Block Diagram for TH-32LRT12U-A TH-32LRT12U-A LC320WXN-SBC1 PANEL BLOCK DIAGRAM EEPROM TFT - LCD Panel +12.0V Timing Controller (1366 x 768 x RGB pixels) LVDS 1Port [LVDS Rx + ODC (30pin) [Gate In Panel] LVDS Select + SDRAM + Spread Spectrum...

  • Page 33: Power Unit Block Diagram For Th-37Lrt12U/M/A

    TH-32LRT12U-A TH-37LRT12U/M/A 10.4. Power Unit Block Diagram for TH-37LRT12U/M/A...

  • Page 34: M/A

    TH-32LRT12U-A TH-37LRT12U/M/A 10.5. Panel Block Diagram for TH-37LRT12U/M/A Mini-LVDS(RGB) EEPROM Source Driver Circuit S1366 +12.0V LVDS Timing Controller 1Port [LVDS Rx + OPC + ODC (30pin) TFT - LCD Panel LVDS Select integrated] (1366 x RGB X 768 pixels) Power Circuit...

  • Page 35: Wiring Connection Diagram

    TH-32LRT12U-A * TH-37LRT12U/M/A 11 Wiring Connection Diagram 11.1. Wiring (1) TH-32LRT12U-A fig. A1 CON7 CON1 fig. A2 CON6 CON34 CON8 CON1 CON10 CON12 CON13 CON11 fig. A3 fig. A3 fig. A3 fig. A3 pic. 1 Clamp Position CON:NO - CON:NO...

  • Page 36: Wiring (2) Th-32Lrt12U-A

    TH-32LRT12U-A TH-37LRT12U/M/A 11.2. Wiring (2) TH-32LRT12U-A fig. A1 fig. A2 CON34 CON42 CON33 Speaker (R) Speaker (L) fig. A3 Clamp Position CON:NO - CON:NO J7 - CN1 J7 - CN1 - CN10 CN1 - CN4 CON1 - CON33 CON34 - CON34...

  • Page 37: Wiring (3) Th-32Lrt12U-A

    TH-32LRT12U-A * TH-37LRT12U/M/A 11.3. Wiring (3) TH-32LRT12U-A Clamp Position CON:NO - CON:NO CN1 - AC Cord...

  • Page 38: Wiring (4) Th-37Lrt12U/M/A

    TH-32LRT12U-A TH-37LRT12U/M/A 11.4. Wiring (4) TH-37LRT12U/M/A CON7 CON1 CON6 CON34 CON1 CON8 CON10 CON12 CON11 CON13 CON42 CON34 CON33 Speaker (R) Speaker (L) Clamp Position CON:NO - CON:NO J7 - CN1 J7 - No Clamp CN1 - CN10 CN1 - CN4...

  • Page 39: Schematic Diagram

    TH-32LRT12U-A * TH-37LRT12U/M/A 12 Schematic Diagram 12.1. Schematic Diagram Notes Notes: 1. Resistor Unit of resistance is OHM [Ω] (K=1,000, M=1,000,000) 2. Capacitor Unit of capacitance is μF, unless otherwise noted. 3. Coil Unit of inductance is H, unless otherwise noted.

  • Page 40: Main Board (1 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.2. Main Board (1 of 15) Schematic Diagram MAIN BOARD PCB-657-D (1/15) Placement AV1&AV2 YPbPr RS232 HDMI3 HDMI2 HDMI1 AUDIO (J1) (J3) (J2) (Con5) (Con6) (Con16) CON7 HDMI SW IC CON34 SPV7100P (U14) DDRRAM(U17) DDRRAM(U16) FLASH C O NA6...

  • Page 41: Main Board (2 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.3. Main Board (2 of 15) Schematic Diagram AV1 Input AV3 Input MAIN BOARD PCB-657-D (2/15) CON1 2S6RJACK(LOCK) BASE/14P/2.0mm AV1/AV2/TUNER/DTV AV1_SV-C_IN AV1_SV-Y_IN AV1_SV_DETECT AV3_SV-Y_IN C518 C517 AV3_SV-C_IN NC/C NC/C HZK7A HZK7A HZK7A AV3_SV_DETECT GND_AV GND_AV GND_AV GND_AV GND_AV GND_AV...

  • Page 42: Main Board (3 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.4. Main Board (3 of 15) Schematic Diagram MAIN BOARD PCB-657-D (3/15) PC/YPbPr1/YPbPr2 PC Input HDTV1 Input R602 VGA_SDA layout 0/1206/BEAD 10nF R_IN +5V_A R603 VGA_SCL These components need NC/22uF/16V Modify BOM of SOG application circuit to close to SPV7100...

  • Page 43: Main Board (4 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.5. Main Board (4 of 15) Schematic Diagram MAIN BOARD PCB-657-D (4/15) HDMI1/HDMI2/HDMI3 +5V_HDMI_A HDMI_A Input HDMI 2-1 Switch +5V_HDMI_A +3V3_HDMI_MUX +3V3_6340 CON5 RCLamp0502B F_5V AT1117-33CY/SOT-223/ +3V3_HDMI_MUX SHELL4 HPRMV_A SHELL3 GND_TMDS FB/1206/19-ohm HDMI_A_SDA 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF...

  • Page 44: Main Board (5 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.6. Main Board (5 of 15) Schematic Diagram MAIN BOARD PCB-657-D (5/15) M52790FP +8V_A +8V_M FB/1206/19-ohm C370 C498 100uF/16V 0.1uF 100uF/16V 0.1uF C389 C390 NC/220pF NC/470pF Tuner_CVBS_IN Tuner_CVBS GND_AU GND_AV 0/1.8uH 0/1uH Use one pi filter for AV Mux CVBS Output...

  • Page 45: Main Board (6 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.7. Main Board (6 of 15) Schematic Diagram RP27 0R*4 RP26 0R*4 TX1M1 TX0M0 TX0M0 P(12) CON14 TXCLK0P TX1P1 TX0P0 TX0P0 P(12) NC/BASE/2P/2.0mm TXCLK0M TX1M2 MAIN BOARD PCB-657-D (6/15) SPV7100AV I TX0M1 Crystal Circuit TX0M1 P(12) TX0P2 TX1P2...

  • Page 46: Main Board (7 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.8. Main Board (7 of 15) Schematic Diagram MAIN BOARD PCB-657-D (7/15) SPV7100AV II ADC POWER/GND (1.8V/3.3V) TMDS POWER/GND (1.8V/3.3V) TMDS AUD PLL POWER/GND (1.8V) +1V8_ADC +1V8_ADCA +1V8 +1V8_AUD Pin1 Pin7 Pin14 Pin22 FB10 BEAD FB47 BEAD C372...

  • Page 47: Main Board (8 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.9. Main Board (8 of 15) Schematic Diagram SDRAM Data Bus +VREF +VTT +2V5_MC RP22X4 P(7) MD[0..31] DQ15 FB28 0/1206/BEAD +2V5 VDDQ VSSQ V= 2.51V DQ14 DQ10 P(7) MA[0..11] DQ13 V= 2.51V +2V5 VSSQ VDDQ DQ11 DQ16 P(7)

  • Page 48: Main Board (9 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.10. Main Board (9 of 15) Schematic Diagram 9B6% 9 B639 Flash Interface Hardware Reset 9&& 9 B639 9 B) / $6+ $ G G RQ H G L RG H W R G L VFKD U JH ID V W H U <...

  • Page 49: Main Board (10 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.11. Main Board (10 of 15) Schematic Diagram MAIN BOARD PCB-657-D (10/15) Power Supply SPV7100 POWER/GND (3.3V/ 1.8V) SOURCE POWER/GND (3.3V/2.5V) F_5V +2V5 F_5V +3V3 APE1117-33CY/SOT-223/ APE1117-ADJ/SOT-223/ F_5V +3V3_SPV FB31 FB32 VOUT 2.51V AP1084-33CY/SOT-263/ FB/1206/19-ohm FB33 FB/1206/19-ohm FB/1206/19-ohm...

  • Page 50: Main Board (11 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.12. Main Board (11 of 15) Schematic Diagram MAIN BOARD PCB-657-D (11/15) Panel Output P_12V Panel Interface Adding test dot as layout J256 J257 TP162 TP57 AP9435GM TP163 TP58 TX1P3 TX1M3 TP59 TP164 NC/FB-DIP(NEW) FB-DIP(NEW) PANEL_PWR TXCLK1P TXCLK1M...

  • Page 51: Main Board (12 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.13. Main Board (12 of 15) Schematic Diagram MAIN BOARD PCB-657-D (12/15) Audio out +8V_A R270 NC/10 AUDIO OUT +8V_A C292 CON13 C293 R271 C294 NC/0.1uF NC/100uF/16V NC/10K KM04022 TP176 U32A NC/0.1uF TP130 AUDIO_OUT_L NC/NJM4558 TP131 AUDIO_OUT_R GND_AU...

  • Page 52: Main Board (13 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.14. Main Board (13 of 15) Schematic Diagram MAIN BOARD PCB-657-D (13/15) Audio AMP When using TDA8947AJ Changing C324,C325,C328,C330,C320,C323,R295,R296,R301,R302,R310,R314,R303 to NC C322,C327 belong to 0.47UF(0603SMD) +24V C321,C326,R308,R321,R326 belong to (0603 resistance 0 ohm) R313 belongs to (10K) TP118...

  • Page 53: Main Board (14 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.15. Main Board (14 of 15) Schematic Diagram MAIN BOARD PCB-657-D (14/15) A+D Tuner Socket TUNER_5V F_5V FB50 FB51 BEAD NC/BEAD +5V_SB P_12V ZMM55C6V8 SD12 R571 R555 R556 C495 C493 R564 0.1uF 0.1uF DTV_IR DTV_IR_AOV TUNER_MODE DTV_DETECT_AOV DETECT_TUNER...

  • Page 54: Main Board (15 Of 15) Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.16. Main Board (15 of 15) Schematic Diagram MUTE_AMP_WT P(7,10) P(14) MUTE_AMP_WT DETECT_TUNER LED_G P(15) DETECT_TUNER P(10) LED_G TUNER_MODE LED_R P(15) TUNER_MODE P(10) LED_R POWER_KEY UART_ENN_3 P(10) UART_ENN_3 3V3_SB P(7,10) POWER_KEY 3V3_SB UART_ENN_4 P(10) UART_ENN_4 SCL_3V3 P(5,7,10,15) SCL_3V3...

  • Page 55: Keypad Board Schematic Diagram (Th-32Lrt12U-A)

    TH-32LRT12U-A TH-37LRT12U/M/A 12.17. Keypad Board Schematic Diagram (TH-32LRT12U-A) KEYPAD BOARD PCB-654-7A GND-02 R146 C245 C278 KEYBOARD 100uF/16V 0.1uF 4.7K CH+_KEY CH-_KEY R148 1.5K CON34 R149 3.3K BASE/3P/2.0mm VOL+_KEY R150 6.8K VOL-_KEY MENU_KEY R151 TV/AV_KEY R152 ZSW-012 ZSW-012 ZSW-012 ZSW-012 ZSW-012...

  • Page 56: Av3 Board Schematic Diagram (Th-32Lrt12U-A)

    TH-32LRT12U-A TH-37LRT12U/M/A 12.18. AV3 Board Schematic Diagram (TH-32LRT12U-A) AV3 BOARD PCB-654-8 PHONE EAR-R_OUT EAR-L_OUT PHONE_OUT-DETECT PHONE R153 0/NC GND-01 CON32 GND-01 AV2-SY_IN CON33 BASE/14P/2.0mm AV2-SY_IN AV2-SC_IN AV2-SC_IN AV2-S_DETECT AV2-S_DETECT AV2-CV_IN Video AV2-CV_IN AV2-L_IN AV2-R_IN EAR-L_OUT LEFT AV2-L_IN EAR-R_OUT PHONE_OUT-DETECT RIGHT...

  • Page 57: Av3+Sw Board Schematic Diagram (Th-37Lrt12U/M/A)

    TH-32LRT12U-A TH-37LRT12U/M/A 12.19. AV3+SW Board Schematic Diagram (TH-37LRT12U/M/A) AV3+SW BOARD PCB-654-2 PHONE G4 G5 EAR-R_OUT EAR-L_OUT PHONE_OUT-DETECT PHONE R153 0/NC GND-01 GND-02 CON32 GND-01 AV2-SY_IN CON33 BASE/14P/2.0mm AV2-SY_IN AV2-SC_IN AV2-SC_IN AV2-S_DETECT AV2-S_DETECT AV2-CV_IN Video AV2-CV_IN SW BOARD PCB-654-2 AV2-L_IN AV2-R_IN...

  • Page 58: Rs232 Board Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.20. RS232 Board Schematic Diagram RS232 BOARD PCB-657-1B UART +3V3 RS232_DETECT TEST POINT RS232_TX TEST POINT +3V3 RS232_RX RS232_DETECT HEADER 5 0.1uF 0.1uF RS232-MALE 0.1uF RS232_RX T1out RS232_TX R1IN 0.1uF R1out T1IN T2out T2IN 0.1uF R2IN R2out SN75C3232E...

  • Page 59: Ir Board Schematic Diagram

    TH-32LRT12U-A TH-37LRT12U/M/A 12.21. IR Board Schematic Diagram IR BOARD PCB-657-2A IRDA&DIMMER IR/DIMMER 5V/STB 2SC2411 5V/STB GND-05 5V/STB DIMMER GND-05 (RESERVE) R509 5V/STB PNA4603H NC/10K 2SC2411 LED1 5V/STB CON42 LEDX2_SMD POWER_SW GND-05 RED ON GEEEN ON R531 R503 R504 12K GND-05...

  • Page 60: Power Board Schematic Diagram (1/2) (For Th-32Lrt12U-A)

    TH-32LRT12U-A TH-37LRT12U/M/A 12.22. Power Board Schematic Diagram (1/2) (for TH-32LRT12U-A) POWER BOARD OPVP-0071 (1/2) TH-32TLRT12U-A TH-32LRT12U-A Power Board Schematic Diagram Power Board Schematic Diagram...

  • Page 61: Power Board Schematic Diagram (2/2) (For Th-32Lrt12U-A)

    TH-32LRT12U-A TH-37LRT12U/M/A 12.23. Power Board Schematic Diagram (2/2) (for TH-32LRT12U-A) POWER BOARD OPVP-0071 (2/2) TH-32TLRT12U-A TH-32LRT12U-A Power Board Schematic Diagram Power Board Schematic Diagram...

  • Page 62: Power Board Schematic Diagram (For Th-37Lrt12U/M/A)

    TH-32LRT12U-A TH-37LRT12U/M/A 12.24. Power Board Schematic Diagram (for TH-37LRT12U/M/A) POWER BOARD 0647-D TH-37LRT12U/M/A TH- 37LRT12U/M/A Power Board Schematic Diagram Power Board Schematic Diagram...

  • Page 63: Printed Circuit Board

    TH-32LRT12U-A TH-37LRT12U/M/A 13 Printed Circuit Board 13.1. Main PCB (Component Side) Main Main Board (TH-32LRT12U-A) Main Main Board (TH-37LRT12U/M/A)

  • Page 64: Main Board (Foil Side)

    TH-32LRT12U-A TH-37LRT12U/M/A 13.2. Main Board (Foil Side) Main Main Board (TH-32LRT12U-A) Main Main Board (TH-37LRT12U/M/A)

  • Page 65: Av3+Sw And Keypad Board

    TH-32LRT12U-A TH-37LRT12U/M/A 13.3. AV3+SW and Keypad Board TH-32LRT12 AV3+KEY BOARD (FOIL SIDE) PCB-654-2 (TH-37LRT12) AV3+KEY BOARD (COMPONENT SIDE) PCB-654-2 (TH-37LRT12) TH-37LRT12 KEY BOARD (FOIL SIDE) PCB-654-7A AV3+KEY KEY BOARD (COMPONENT SIDE) PCB-654-7A...

  • Page 66: Av3, Ir, And Rs232 Board

    TH-32LRT12U-A TH-37LRT12U/M/A 13.4. AV3, IR, and RS232 Board AV3 BOARD (FOIL SIDE) PCB-654-8 (TH-32LRT12) TH-32LRT12 RS232 AV3 BOARD (COMPONENT SIDE) PCB-654-8 (TH-32LRT12) TH-37LRT12 RS232 BOARD (FOIL SIDE) PCB-657-1B IR BOARD (FOIL SIDE) PCB-657-2A RS232 IR BOARD (COMPONENT SIDE) PCB-657-2A RS232 BOARD (COMPONENT SIDE)

  • Page 67: Power Board (Top Side)

    TH-32LRT12U-A TH-37LRT12U/M/A 13.5. Power Board (Top Side) Power Board for TH-32LRT12U-A Power TH-32LRT12U-A Power Board for TH-37LRT12U/M/A Power TH-37LRT12U/M/A...

  • Page 68: Power Board (Bottom Side)

    TH-32LRT12U-A TH-37LRT12U/M/A 13.6. Power Board (Bottom Side) Power Board for TH-32LRT12U-A Power TH-32LRT12U-A Power Board for TH-37LRT12U/M/A Power TH-37LRT12U/M/A...

  • Page 69: Exploded View And Replacement Parts List

    TH-32LRT12U-A * TH-37LRT12U/M/A 14 Exploded View and Replacement Parts List 14.1. Exploded View and Mechanical Replacement Parts List (TH-32LRT12U-A) Please click the radio button for “Diagrams ll/Parts List” on the menu bar. Explode View...
  • Page 70 TH-32LRT12U-A TH-37LRT12U/M/A Accessories and Packing Carton Box 100mm Front...
  • Page 71 TH-32LRT12U-A * TH-37LRT12U/M/A TH-32LRT12U-A Parts Lists Safety Ref. No. Part No. Part Name & Description Remarks TTX4CM008C SPEAKER TTY4CM107 CABINET UNIT TKY4CM037-01 FRONT CABINET TES4CM016 SPRING TBX4CM031-A POWER BUTTON TMM4CM079 DOOR SPRING TBM1A036-02 BADGE TQF4CM230 FRONT SHEET TKP4CM074 DOOR COVER...

  • Page 72: Exploded View And Mechanical Replacement Parts List (Th-37Lrt12U/M/A)

    TH-32LRT12U-A TH-37LRT12U/M/A 14.2. Exploded View and Mechanical Replacement Parts List (TH-37LRT12U/M/A) Model No.: TH-37LRT12U/M/A Explode View...
  • Page 73 TH-32LRT12U-A * TH-37LRT12U/M/A Accessories and Packing Front Carton Box 100mm...
  • Page 74 TH-32LRT12U-A TH-37LRT12U/M/A TH-37LRT12U/M/A Parts List Safety Ref. No. Part No. Part Name & Description Remarks TTX4CM008C SPEAKER TTY4CM093 CABINET UNIT TKYM039A-01 FRONT CABINET TKP4CM081-06 FRONT PANEL TBX4CM031 POWER BUTTON TKK4CM012 LED PANEL TES4CM016 SPRING TQF4CM229 I/O SHEET TMM4CM077 DOOR SPRING...

  • Page 75: Electrical Replacement Parts List

    TH-32LRT12U-A * TH-37LRT12U/M/A 14.3. Electrical Replacement Parts List 14.3.1. Replacement Parts List Notes J: ± 5% K: ± 10% M: ± 20% Z: ± 80%, -20%...

  • Page 76: Electrical Replacement Parts List

    TH-32LRT12U-A TH-37LRT12U/M/A 14.3.2. Electrical Replacement Parts List Note: Replacement parts are supplied in kits. To purchase, specify the number of kits to order. Main PCB (TH-32LRT12U-A/TH-37LRT12U/M/A) Safety Ref. Part No. Part Name & Pcs Remarks Description Safety Ref. Part No.
  • Page 77 TH-32LRT12U-A * TH-37LRT12U/M/A Safety Ref. Part No. Part Name & Pcs Remarks Safety Ref. Part No. Part Name & Pcs Remarks Description Description C284 107M1CWD1 E 100UF,16V C549- CKO-471K0603 C 470PF,50V C285 104K0603A C 0.1UF,K,50V C555, CKO-471K0603 C 470PF,50V C286...
  • Page 78 TH-32LRT12U-A TH-37LRT12U/M/A Safety Ref. Part No. Part Name & Pcs Remarks Safety Ref. Part No. Part Name & Pcs Remarks Description Description J257 FB181025-T INDUCTION COIL R206 RCA-330J9GW M 33 OHM,J KM04024-03 JACK R207, RCA-103J9GW M 10K OHM,J JAK-EAR02 JACK...
  • Page 79 TH-32LRT12U-A * TH-37LRT12U/M/A Safety Ref. Part No. Part Name & Pcs Remarks Safety Ref. Part No. Part Name & Pcs Remarks Description Description R376 RCA-0R0J9GW M 0 OHM,J R523, RCA-330J9GW M 33 OHM,J R38, 39 RCA-750J9GW M 75 OHM,J RCA-103J9GW...
  • Page 80 M 0 OHM,J MIC-AN78D05A ZSW-012 SWITCH U5, 6 RCLAMP0514M MZD-HZK3C ZENER DIODE 24LC08B-5 RCLAMP0514M 27.000-15 CRYSTAL AV3 + Key PCB (TH-37LRT12U/M/A) 32.768-20 CRYSTAL Safety Ref.No. Part No. Part Name & PCS Remarks Z1, 2 ZMM55C6V8 ZENER DIODE Description Z10-23 ZMM55C6V8...
  • Page 81 TH-32LRT12U-A * TH-37LRT12U/M/A Safety Ref.No. Part No. Part Name & PCS Remarks Safety Ref.No. Part No. Part Name & PCS Remarks Description Description R114 211113002F M 30K OHM,F R601- 211200332F M 3.3K OHM,J R121 211210100M M 10 OHM,J R605 211210363M...
  • Page 82 TH-32LRT12U-A TH-37LRT12U/M/A Safety Ref.No. Part No. Part Name & PCS Remarks Safety Ref.No. Part No. Part Name & PCS Remarks Description Description R233, 226R52241 C 0.22UF,50V PC104, 2522AP0005 OPTO COUPLER C235 22EAX4102A E 1000UF,35V IC201 2531AU0004 C236 226R52241 E 1000UF,35V...
  • Page 83 TH-32LRT12U-A * TH-37LRT12U/M/A Wire List Safety Ref.No. Part No. Part Name & PCS Remarks Description VSX37LRT1A-A LVDS CABLE 37" VSX37VGL1B-A INVERTER WIRE 37" VSX37VGL1D-A FRONT WIRE 37" VSX37VGL1E-A 3P KEY WIRE 37" VSX37VGL1F-A 6P IR WIRE 37" VSX32LRT1G-A AUDIO WIRE...

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