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Toshiba 48L5455R Service Manual

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SERVICE MANUAL
LCD Color Television
48L5455R
48L5443DG
48L3448DG
40L3448DG
32L3448DG
(System Information)
FILE NO. 050-2014172
REVISED:01

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Summary of Contents for Toshiba 48L5455R

  • Page 1 FILE NO. 050-2014172 REVISED:01 SERVICE MANUAL LCD Color Television 48L5455R 48L5443DG 48L3448DG 40L3448DG 32L3448DG (System Information)
  • Page 2 REVISION HISTORY REV Date Reason for Change May/15/2015 - Correction of Step 3 in "FIRMWARE UPDATING"...

  • Page 3: Table Of Contents

    CONTENTS 1. IMPORTANT NOTICE 2. GREEN PRODUCT PROCUREMENT 3. LEAD-FREE SOLDER 4. SAFETY INSTRUCTION 5. FIRMWARE UPDATING 6. HOTEL MODE / HOTEL CLONE 7. BLOCK DIAGRAM 8. SCHEMATIC DIAGRAM 9. TROUBLESHOOTING...

  • Page 4: Important Notice

    WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Toshiba shall not be liable for any damages, losses, expenses or costs, if any, incurred in connection with or as a result of use of any information or data provided...

  • Page 5: Green Product Procurement

    Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any marketing of new products containing the restricted substances. Increasing attention is given to issues related to the global environmental. Toshiba Corporation recognizes environmental protection as a key management tasks, and is doing its utmost to enhance and improve the quality and scope of its environmental activities.

  • Page 6: Safety Instruction

    (1 / 3) SAFETY INSTRUCTION WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW. Safety Precaution WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER. THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED BEFORE SERVICING THIS CHASSIS.
  • Page 7 (2 / 3) 8. Always ensure that all internal wirings are in accordance before re-assembling the external casing after a repairing completed. Do not allow internal wiring to be pinched by cabinets, panels, etc. Any error in reassembly or wiring can result in electrical leakage, flame, etc., and may be hazardous.
  • Page 8 (3 / 3) sinusoidal waveforms. The measuring instrument is calibrated by comparing the frequency factor of with the solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is constructed showing the deviation of from the ideal curve as a function of frequency.

  • Page 9: Firmware Updating

    FIRMWARE UPDATING PROCEDURE Analog - Digital SW update via USB 1. Please copy the files to USB device (root).  Mb9x_en.bin  mboot.bin  usb_auto_update.txt 2. Turn power to OFF by mechanical switch or removing AC plug and plug the USB to TV 3.

  • Page 10: Hotel Mode/Hotel Clone

    HOTEL MODE/HOTEL CLONE HOTEL TV MENU: To enter hotel menu, please open main menu by pressing MENU(M) button. When you code following password "7935", hidden hotel TV menu appears as below: Figure: Hotel TV Menu Hotel Mode Setting "Hotel Mode" item 'On' activates hotel mode. In other words user can do only what he/she is allowed to do.
  • Page 11 Enables (Fixed Volume Enable = On) or prohibits (Fixed Volume Enable = Off) the use of fixed volume value which is set by menu item "Fixed Volume Value". If Fixed Volume Enable is ON, volume cannot be set to a value other than the Fixed Volume Value. Fixed Volume Value Sets the fixed value the volume can have.
  • Page 12 Main menu: Installation, Channel list Settings menu: Language, parental, Sources, Other settings Startup Position Specifies the starting channel when TV is switched ON. May take one of following values: AUTO (Last channel when TV is turned off) TV (TV channel number 1) Other enabled external sources via service menu or config tool (EXT1, HDMI2, PC, FAV, SVHS etc.) Teletext...

  • Page 13: Block Diagram

    GENERAL BLOCK DIAGRAM MB95 MB95S MB95M 1V5_VCC 1V5_VCC 2x6W or 2x8W 5V_VCC DVB-T2 (internal demod) 2x2.5W DVB-T2 (external demod) 24V_VCC DDR3 RAM DDR3 RAM 12V_VCC DVB-S/S2 (64Mx16bit or (64Mx16bit or 5V_VCC 3V3_VCC 128Mx16bit) 128Mx16bit) SHORT CCT OPTICAL SPDIF 3V3_VCC_TUNER PROTECT (1600 MT/s) (1600 MT/s) SC AUDIO_OUT...
  • Page 14 HDMI0_5V HDMI0_RX0N RXA0N HDMI0_RX2P HDMI0_HPDIN HDMI0_RX0P RXA0P RXC0N HDMI0_RX1N RXA1N RXC0P HDMI2_RX2P HDMI0_RX1P HDMI0_RX2N RXA1P RXC1N R141 HDMI0_RX1P HDMI0_RX2N RXA2N RXC1P HDMI2_RX2N HDMI0_RX2P RXA2P RXC2N HDMI2_RX1P HDMI0_CLKN R112 HDMI0_RX1N RXACKN RXC2P R158 HDMI0_CLKP HDMI0_RX0P RXACKP RXCCKN HDMI2_RX1N BC848B HDMI0_SCL DDCDA_CK HDMI / USB RXCCKP HDMI2_RX0P...
  • Page 15 1V5_VCC 1V5_VCC C257 C258 C259 C260 C261 C262 C264 C265 C266 C268 DDR0_VREFCA DDR1_VREFDQ 100n 100n 100n 100n 100n 100n 100n 100n 100n 100n R410 R408 1V5_VCC 1V5_DDR0 C213 C248 C249 C250 C251 C252 C253 C254 C255 C256 100n 100n 100n 100n 100n...
  • Page 16 NAND_ALE NF_ALE PCM_D[0]/NF_AD[0] PCMNANDD0 AD22 NC29 NAND_WPZ NF_WPZ PCM_D[1]/NF_AD[1] PCMNANDD1 AB21 Place these resistors NAND_CEZ NF_CEZ PCM_D[2]/NF_AD[2] PCMNANDD2 close to MSTAR AC21 AE17 NC28 NAND_CLE NF_CLE PCM_D[3]/NF_AD[3] PCMNANDD3 AC18 NAND_REZ NF_REZ PCM_D[4]/NF_AD[4] PCMNANDD4 AE18 NC27 NAND_WEZ NF_WEZ PCM_D[5]/NF_AD[5] PCMNANDD5 AA19 NAND_RBZ NF_RBZ PCM_D[6]/NF_AD[6]...
  • Page 17 3V3_VCC_TUNER 24MHz USB & WIFI 30051799 C158 C161 I2C ADDR: C0 TP96 30010731 27MHz C344 Q131 BC858B TP91 1V8_VCC_TUNER 6 IO4 C348 C471 USB2_DP TP92 180p USB_VCC 330R C143 USB_VCC AZ099-04S R311 RF_REF VDD_L CN17 USB2_DN C352 C350 C351 R308 JK11 RF_IP ALIF_P...
  • Page 18 3V3_STBY W/B2CABLE LDO1 12V_STBY DC/DC1 R822 30069495 560R LM1117 TP72 TP119 5V_STBY 3V3_STBY C1213 C1214 C119 DC/DC3 VOUT C475 C472 R394 R644 TP120 TP121 100n 100k 120k C1207 DIMMING TP122 BACKLIGHT_ON/OFF C1208 TP123 C460 STBY_ON/OFF VIN1 VIN3 BST3 VDDC C205 C207 12V_VCC 24V_VCC_AU...
  • Page 19 OPTIONS TABLE PANEL SUPPLY SWITCH FHD 50Hz 3D FFC R298 OP_PIN4 3V3_VCC C140 100u R297 3D_SYNC_OUT R239 12V_VCC PANEL_VCC PANEL_VCC OP_PIN5 5V_VCC R299 PANEL_VCC 3V3_VCC R236 R175 PANEL_VCC OP_PIN6 LG BASED 30070519 R235 PANEL_VCC OP_PIN7 PANEL_VCC PANEL_VCC_ON/OFF BC848B MEGA_DCR_IN R221 PANEL_VCC OP_PIN8 C141...
  • Page 20 TP93 DSP_MAIN_L_OUT MAIN_L HP_L CLOSE TO MSTAR IC MSD8WB9BX C453 TP94 C1200 LINEIN_L0 R653 AA12 LINEIN_R0 DSP_SC_L_OUT SC_L_OUT HP_R AA11 LINEIN_L2 C548 AB11 C586 LINEIN_R2 C1226 C1227 C587 SC_AUD_L_IN LINEIN_L3 DSP_MAIN_R_OUT MAIN_R TP95 C591 LINEIN_R3 SC_AUD_R_IN C590 LINEIN_L4 SAV_L_IN C454 SAV_R_IN LINEIN_R4 AA10...
  • Page 21 3V3_VCC VDD33 100n 100n 3V3_VCC AVDD_LPLL 100n 100n VDDC C1203 AVDD_MOD VDDC 2V5_VCC 100n 1V5_VCC AVDD_DDR0 C400 3V3_STBY AVDD_DVI 3V3_STBY AVDD_DMPLL C446 C443 100n 100n 100n 100n 100n 100n 100n 100n 100n 2V5_VCC AVDD25_PGA 2V5_VCC AVDD25_REF 100n 100n AVDD_DDR0 C401 3V3_STBY AU33 3V3_STBY...
  • Page 22 INDIA OPTION SC_CVBS_IN R419 5V_VCC SCART 1 12V_VCC 220R C854 TP43 SCART_AUD_L_IN VGA INPUT C383 100n SCART_AUD_R_IN VGA_DDC_5V BC858B 24C02 option C211 TP63 R688 CVBS0_OUT R693 SC_CVBS_IN 100R BC848B TP26 C385 SC_CVBS_OUT R416 24LC02 TP25 SC_CVBS_OUT 100R R794 C809 R531 C386 SC_FB R237...
  • Page 23 R250 3V3_SAT_DEMOD SYS_SCL R251 12V_VCC C165 C112 220n SYS_SDA C216 100n C172 C167 100n 220n C220 S2_SCL 3V3_VCC R281 LNB_OUT R178 VOUT ISEL S2_SDA 1N5819 R105 VDDI_1V25 1N5819 R273 S2_RESET 100R SYS_SDA S2_AGC D178 R104 LNBH29EPTR 100R SYS_SCL 100n EXT_RESET 1N5819 ADDR C218...
  • Page 24 TR100 PFC TRANSFORMER OPTION TR101 V_11 S119 C131 R126 C127 R115 R117 R118 R131 R125 +400V V_10 C126 R124 Q101 R150 100p 100R FQT1N60C D105 D103 R110 100R C129 1N4148 C130 C133 100p 100p U101 1N4148 1N4148 R114 100p R130 D111 100R COMP...
  • Page 25 OPT. EFD43_80V-100W C2591 C2592 R386 R377 +400V TR301 R388 R387 R397 R389 R381 DRAIN_S D370 C547 +24-80V_AC R391 R382 D352 R559 47p 2kV C399 C398 HER207 R392 R383 D507 RS1002FL Optional Optional R399 R398 R393 R384 UF5402 C370 AUX_S AUX_S D303 C306 U300...
  • Page 26 D503 LED1_S LED DRIVER SINK MOSFET OPT. L500 R565 LED4_S SB5100 20mm optional +24-80V F511 50R 100R F500 D504 F512 Q510 Q511 C502 SB5100 C2582 C2583 VCC_LED VCC_LED C507 R508 L501 F501 560u 560u R560 R561 270R 150u F502 F503 D501 V_LED+ 100R...
  • Page 27 12V RCD SNUBBER OPTION XCAPS BA159 ROCKER SWITCH 100n 220n 275V 275V 275V SB5100 100n 12V_DC 275V 275V 100n 470n 12V_AC +12Vdc OUTPUT 275V 275V 275V SB5100 +12VCC SB5100 560u 800R 560u 560u RL207 RL207 SB5100 UF5402 UF5402 SB5100 +400V 510V 3.15A/250V UF5402...
  • Page 28 OUTPUT DIODE RC SNUBBER CIRCUIT C300 Tapped Coil Option CON_AC V_LED+ C301 BOOST INPUT VOLTAGE +24VCC POWER BOARD to LED BARS CONNECTION +24VCC_SW LED DRIVER SB5100 V_LED+ 270R 470n 470n BOOSTED OUTPUT V_LED+ SB5100 V_LED+ V_SW 330n LED1_S BL_ON-OFF 270R COMP SB5100 VCC_LED...
  • Page 29 PL101 PL100 PL103 PL102 12V DIODE OPS. 24V DIODE OPS. R185 R114 R133 R152 12V_DC S132 630V PIN_9 12V_AC STPS20H100CFP 24V_AC D131 +24VCC C105 C102 12V_AC R168 R186 R151 R169 C165 C164 D130 S139 SF10L60U R182 R164 LF101 HER207 100k 100k 12V_AC F110...
  • Page 30 100R 100n 100n 100n xx295 LED BMS TOSHIBA 17ld159-r1 SCH NAME : T. SHT: <YOUR NAME HERE> DRAWN BY : 21-06-2013_11:06 A X M...
  • Page 31 100R 100n 100n 100n TOSHIBA 32220 D LED BMS 17ld150-r2 SCH NAME : T. SHT: <YOUR NAME HERE> DRAWN BY : 04-01-2013_09:40 A X M...

  • Page 32: Troubleshooting

    TROUBLESHOOTING (17MB95M) A. NO BACKLIGHT PROBLEM Problem: If TV is working, led is normal and there is no picture and backlight on the panel. Possible couses: Backlight pin, dimming pin, backlight supply, stby on/off pin BACKLIGHT_ON/OFF pin should be high when the backlight is ON. R119 must be low when the backlight is OFF.
  • Page 33 Backlight power supply should be in panel specs. Please check Q33, shown below; also it can be checked TP53. STBY_ON/OFF_NOT should be low for tv on condition, please check Q11’s collector.
  • Page 34 B. CI MODULE PROBLEM Problem: CI is not working when CI module inserted. Possible couses: Supply, suply control pin, detect pins, mechanical positions of pins.  CI supply should be 5V when CI module inserted. If it is not 5V please check CI_PWR_CTRL, this pin should be low.
  • Page 36 C. STAYING IN STAND-BY MODE Problem: Staying in stand-by mode, no other operation This problem indicates a short on Vcc voltages. Protect pin should be logic high while normal operation. When there is a short circuit protect pin will be logic low. If you detect logic low on protect pin, unplug the TV set and control voltage points with a multimeter to find the shorted voltage to ground.
  • Page 37 E. KEYPAD TOUCHPAD PROBLEMS Problem: Keypad or Touchpad is not working Check keypad supply on MB95M.
  • Page 38 F. USB PROBLEMS Problem: USB is not working or no USB Detection. Check USB Supply, It should be nearly 5V. Also USB Enable should be logic high. G. NO SOUND PROBLEM Problem: No audio at main TV speaker outputs. Check supply voltages of 24V VDD_AUDIO, 3.3V AUDIO_AVDD and AUDIO_DVDD with a voltage- meter.
  • Page 39 H. STANDBY ON/OFF PROBLEM Problem: Device can not boot, TV hangs in standby mode. There may be a problem about power supply. Check main supplies with a voltage-meter. Also there may be a problem about SW. Try to update TV with latest SW. Additionally it is good to check SW printouts via Teraterm.
  • Page 40 TOSHIBA LIFESTYLE PRODUCTS & SERVICES CORPORATION 2-9, Suehiro-Cho, Ome-Shi, Tokyo 198-8710, Japan REV. 01 May/15/2015...

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48l5443dg48l3448dg40l3448dg32l3448dg