Related Manuals for Toshiba 27WL56P
Summary of Contents for Toshiba 27WL56P
-
Page 1: Service Manual
FILE NO. 030-200503 SERVICE MANUAL LCD Color Television 27WL56P TOSHIBA CORPORATION, 2005 Published in Japan, Apr. 2005 (YC) -
Page 2: Table Of Contents
TABLE OF CONTENTS SERVICE SAFETY PRECAUTIONS ............................ 3 HANDLING THE LCD MODULE ............................5 SERVICE MODE .................................. 7 LOCATION OF CONTROLS ............................... 12 LAYOUT OF MAJOR BOARDS ............................14 MECHANICAL DISASSEMBLY ............................15 EXPLODED VIEW ................................17 PACKING DISASSEMBLY ..............................19 CHASSIS AND CABINET REPLACEMENT PARTS LIST .................... -
Page 3: Service Safety Precautions
SERVICE SAFETY PRECAUTIONS • The caution items shown here describe major safety issues and should always be observed. • The meanings of the various indications are as follows. Indicates a hypothetical situation in which service personnel and nearby third parties, or even WARNING end users due to a product defect after the service operation is completed, could possibly be in danger of injury or even death in the event of operational error. - Page 4 WARNING • Always advise users to keep children away. There is danger of injury to children from tools, disassembled products, etc. KEEP CHILDREN AWAY • Always disconnect the power plug before starting work whenever power is not required. Failure to disconnect the power plug before starting work can result in electrical shock. UNPULUG •...
-
Page 5: Handling The Lcd Module
HANDLING THE LCD MODULE Safety Precautions 3. If the panel surface becomes soiled, wipe with cotton or a In the event that the screen is damaged or the liquid crystal soft cloth. If this does not remove the soiling, breathe on (fluid) leaks, do not breathe in or drink this fluid. - Page 6 7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an extended period of time. 8. Do not store the LCD module below the temperature con- ditions described in the specifications. Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage.
-
Page 7: Service Mode
SERVICE MODE 1. ENTERING SERVICE MODE 1) Press button once on 2) Press button again and 3) While pressing the button, Remote Control. keep pressing. press MENU button on TV set. or Sound Mute (Service mode display) DISPLAYING THE ADJUSTMENT MENU 1) Press MENU button on TV. - Page 8 4. SELECTING THE ADJUSTING ITEMS 1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2. (t button for reverse order) 5. ADJUSTING THE DATA 1) Pressing of VOLUME ; +/– button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
- Page 9 The diagnosis will begin to check if interface among IC’s is executed properly. 2) During diagnosis, the following displays are shown. WL56_EU_0100 WL56_EU_0100 000000 27WL56P 27WL56P Firmware : Version information of microprocessor In case of file name : WL56_EU and Version : 0100 indicates[WL56_EU_0100].
- Page 10 1) Press “9” button twice on Remote Control during display of adjustment menu in the service mode. The version of main MPU will begin to check. 2) During Version Check, the following displays are shown. WL56_EU_0100 (E16) 27WL56P MAIN MPU : Version information of microprocessor In case of file name : WL56_EU, Version 0100 for Code Program Version...
- Page 11 10. STATUS CHECK MODE 1) Press “9” button thrice on Remote Control during display of adjustment menu in the service mode. The status of this model will begin to check. 2) During Status Check, the following displays are shown. EXT1 1080i-50 C6 38 54 CE 08 0000 0000 0000...
-
Page 12: Location Of Controls
LOCATION OF CONTROLS Front Standby GREEN – On-timer set RED – Power On Back SCART 1 (EXT1) SCART 2 (EXT2) CABLE HOLDER FIXING STRAP decoder* MEDIA REC. HDMI™ INPUT IN/OUT media recorder - 12 -... -
Page 13: Remote Control
OK to confirm your selection Text control buttons Stereo/Bilingual reception Bass Boost To select mode To mute the sound When in TV mode: When using a TOSHIBA VCR or DVD: Time display press to PAUSE When in Text mode: press to EJECT... -
Page 14: Layout Of Major Boards
LAYOUT OF MAJOR BOARDS U004 AV OTHER BOARD U003 SIGNAL BOARD U001 POWER BOARD U006 KEY BOARD U005 LED/RMT BOARD U007 PC-IN BOARD U002 AC-IN BOARD - 14 -... -
Page 15: Mechanical Disassembly
MECHANICAL DISASSEMBLY 1. Remove the stand (foot) and back cover. PP3 × 8 + SW + W × 4 A450 BITTB3 × 16 SBN × 10 A401 A445 PP5 × 16 SW + W SBN × 3 A420 2. Remove the boards (KEY, PC-IN) and piece key ass'y. PP4 ×... - Page 16 3. Remove the boards (POWER, AC-IN, SIGNAL, AV OTHER, LED/RMT) and speaker. PP3 × 8 + SW + W PP3 × 8 + SW + W × 5 × 6 PP08 U001 PP3 × 8 + SW + W PP3 × 8 + SW + W U004 ×...
-
Page 17: Exploded View
EXPLODED VIEWS 1. Chassis Block PP3 × 8 + SW + W SBN × 4 A450 BITTB3 × 16 S B N × 10 A445 A401 PP4 × 8 + SW + W SBN × 6 PP4 × 8 + SW + W SBN PP4 ×... -
Page 18: Main Block
2. Main Block PP3 × 8 + SW + W SBN PP3 × 8 + SW + W SBN × 5 × 6 PP3 × 8 + SW + W SBN PP08 × 4 U001 U004 PP3 × 8 + SW + W SBN PP12 ×... -
Page 19: Packing Disassembly
PACKING DISASSEMBLY A702A A702A A703 Y101 Y170 Y130 Y101E A702B A702B A701A - 19 -... -
Page 20: Chassis And Cabinet Replacement Parts List
• The part number must be used when ordering parts, in order to assist in processing, be sure to include the Model number and Description. ∗ • The PC board assembly with mark is no longer available after the end of the production. Model : 27WL56P Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors .... - Page 21 Location Location Parts No. Description Parts No. Description CC03 76109152 CERAMIC CHIP, 50V B 1500PF K R169 76000445 CHIP JUMPER, 1608TYPE CC04 76109152 CERAMIC CHIP, 50V B 1500PF K R170 76011682 CHIP, 1/20W 6.8K OHM J CC05 76109102 CERAMIC CHIP, 50V B 1000PF K R501 76011682 CHIP, 1/20W 6.8K OHM J...
- Page 22 Location Location Parts No. Description Parts No. Description R4106 76011681 CHIP, 1/20W 680 OHM J RE52 76011152 CHIP, 1/20W 1.5K OHM J R4107 76011471 CHIP, 1/20W 470 OHM J RE53 76871222 CHIP, 1/8W 2.2K OHM J R4108 76011681 CHIP, 1/20W 680 OHM J RE54 76871222 CHIP, 1/8W 2.2K OHM J...
- Page 23 Location Location Parts No. Description Parts No. Description RV95 76011182 CHIP, 1/20W 1.8K OHM J Q854 23205446 TRANSISTOR, 2SC2412K, Q T146 RV120 76011750 CHIP, 1/20W 75 OHM J Q855 23205446 TRANSISTOR, 2SC2412K, Q T146 Q883 23135091 IC, ERROR AMP. VS=24.0V SE024N COIL &...
- Page 24 Location Location Parts No. Description Parts No. Description DA07 23362042 DIODE, ZENER, UDZS6.8B GR36 76000445 CHIP JUMPER, 1608TYPE DB01 23358606 DIODE, LED RED, SLR-56VC3FPQ GR44 76000445 CHIP JUMPER, 1608TYPE DB04 23358605 DIODE, LED GREEN, SLR-56MC3FPQR GR601 76000445 CHIP JUMPER, 1608TYPE DB20 23357406 DIODE, ZENER, UDZS5.6B...
- Page 25 SHP-32 23587821 32WL56P(B) AUO-32 23590399 SHP-32 23587821 32WL56P(G) AUO-32 23590400 LPL-37 23587823 37WL56P(B) AUO-37 23590401 LPL-37 23587823 37WL56P(G) AUO-37 23590402 27WL56P(B) CMO-27 23587825 27WL56P(G) CMO-27 23587825 SHP-32 23587827 32WL58P(B) LPL-32 23590403 SHP-32 23587827 32WL58P(G) LPL-32 23590404 SHP-37 23587829 37WL58P(B) LPL-37...
-
Page 26: Pc Boards Top & Bottom View
Location Parts No. Description W661 23351292 SPEAKER, SPK1410AM, 60X120 8-OHM 10W X501 23153612 CRYSTAL, 16.200 25PPM 25OHM Z889 23144195 PROTECTOR, 20PSERIES 125V 5A ZA01 23103778 FERRITE CORE, TFE1008 ZE72 23144185 PROTECTOR, 20PSERIES 125V 1A ZE75 23144195 PROTECTOR, 20PSERIES 125V 5A ZE94 23144189 PROTECTOR, 20PSERIES 125V 2A... - Page 27 POWER BOARD PD2105A1 (U001) BOTTOM (FOIL) SIDE DS-7209 C826 23547777 L884 C827 R862 L876 F802 250V F3.15AL T862 C825 R817 L878 R861 D806 D884A D883A D805 CAUTION R805 LIVE AREA D885 D809 D884 D883 Z889 D813 L889 P811B L888 L805 L874 Q801A C816...
- Page 28 AC-IN BOARD PD2105A2 (U002) BOTTOM (FOIL) SIDE D852 T802 P813A SR81 RE04 P812A T801 C812 LE07 LE06 CE13 DE01 D801A L806 CE14 C811 L807 D801 D899 CAUTION C802 C801 LIVE AREA R801 L801 P800 DS-7209 L802 P805B R827 R828 23547777 R899 AC-IN BOARD PD2105A2 (U002) TOP (COMPONENT) SIDE...
- Page 29 SIGNAL BOARD PD2131F (U003) BOTTOM (FOIL) SIDE - 30 -...
- Page 30 SIGNAL BOARD PD2131F (U003) TOP (COMPONENT) SIDE - 31 -...
- Page 31 AV OTHER BOARD PD2119A1 (U004) BOTTOM (FOIL) SIDE RV07 PV23 CCC9 CCC9 CC10 CC10 R6639 R6640 R6639 R6640 QV54 DS-7209 23547798 RC01 RC03 R6638 CV54 CC01 R6636 CC05 DV01 RV02 RV05 RV06 RV28 PV17 R6616 RT01 RT02 RV21 CC02 CC06 C6604 R6616 PV22...
- Page 32 AV OTHER BOARD PD2119A1 (U004) TOP (COMPONENT) SIDE PV23 CV54 PV22 PV17 C6602 PD2119 C6604 PK05 23590217B LT01 PH02 CV25 PH01 L105 Q6600 QV16 CV24 CV22 C6600 QV15 C119 CV52 C102 C6601 Q6600 C668 CV27 CV26 CV23 QV14 DE91 CV17 Q670A CE90 C682...
- Page 33 LED/RMT BOARD PD2119A2 (U005) PC-IN BOARD PD2119A4 (U007) PC-IN BOARD PD2119A4 (U007) BOTTOM (FOIL) SIDE BOTTOM (FOIL) SIDE TOP (COMPONENT) SIDE P601 P602B PV90 C694 C688 RB24 RB22 R688 RR02 RB24 RB22 CB02 RR01 PV90 RR03 RB10 RR05 RR06 RR05 RR04 RR04 23547798...
- Page 34 SCHEMATIC DIAGRAM MODEL : 27WL56P WARNING : BEFORE SERVICING THIS CHASSIS, READ THE "SERVICE SAFETY PRECAUTIONS" ON PAGE 3 OF THIS MANUAL. CAUTION : The international hazard symbols " " in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list.
- Page 35 SCHEMATIC DIAGRAM STRUCTURE: CONNECTOR ..............................1/48 AV_JACK ................................2/48 TIF ..................................3/48 AUDIO_OUT ............................... 4/48 REGULATOR ..............................5/48 KEY ..................................6/48 LED_RMT_HP ..............................7/48 PC-IN_BOARD ..............................8/48 CONNECTOR(POWER_BOARD) ........................9/48 MAIN_POWER(POWER_BOARD) ........................10/48 SUB_POWER(POWER_BOARD) ........................11/48 AC-INPUT ................................. 12/48 SIGNAL ANALOG IN [SHEET-200] ..
- Page 36 - 40 -...
-
Page 37: Specifications
SPECIFICATIONS Programme Positions Broadcast systems/channels PAL-I UHF UK21-UK69 Stereo Nicam PAL-B/G UHF E21-E69 2 carrier system VHF E2-E12, S1-S41 Visible Screen Size 68cm (approx.) SECAM-L UHF F21-F69 VHF F1-F10, B-Q Display SECAM-D/K UHF R21-R69 16:9 VHF R1-R12 Sound output (at 10% distortion) Main 10W + 10W Video Input PAL, SECAM, NTSC 3.58/4.43... -
Page 39: Schematic Diagram
SCHEMATIC DIAGRAM MODEL : 27WL56P WARNING : BEFORE SERVICING THIS CHASSIS, READ THE "SERVICE SAFETY PRECAUTIONS" ON THE MANUAL FOR THIS MODEL. CAUTION : The international hazard symbols " " in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list. -
Page 40: Circuit Block Diagram
SCHEMATIC DIAGRAM STRUCTURE: CONNECTOR ..............................1/48 AV_JACK ................................2/48 TIF ..................................3/48 AUDIO_OUT ............................... 4/48 REGULATOR ..............................5/48 KEY ..................................6/48 LED_RMT_HP ..............................7/48 PC-IN_BOARD ..............................8/48 CONNECTOR(POWER_BOARD) ........................9/48 MAIN_POWER(POWER_BOARD) ........................10/48 SUB_POWER(POWER_BOARD) ........................11/48 AC-INPUT ................................. 12/48 SIGNAL ANALOG IN [SHEET-200] .. - Page 42 27WL56P CONNECTOR (1/48)
- Page 43 27WL56P AV_JACK (2/48)
- Page 44 GR07 10V470 KETSU C105 105 C 10V470 105 C SCL1 SDA1 C118 GR08 OPEN (23103272Q) 1-B5 SCL1 KETSU SYS_SW1 SYS_SW1 1-B8 1-B5 SDA1 L110 GR06 KETSU OPEN 1-B8 1-B2,1-D5,2-A7 TP-12 SCL1 1-D6,5-A1 SDA1 C104 AFT1 AFT1 1-B5 50V4.7 27WL56P (3/48)
- Page 45 GR660 2SA1162-Y OPEN R685 D678 C690 C676 R686 MA111 A_MUTE OPEN 35V100u A_MUTE GR661 VCC_AUDIO R684 VCC_AUDIO C677 100k OPEN C685 R683 B25V0.01 D677 MA111 1-D8 R6602 Q662 RN2404 R6601 EXT_MUTE Q663 1-B6 EXT_MUTE 2SC4081-Q R6603 100k 27WL56P AUDIO_OUT (4/48)
- Page 46 1-D7 2SC2412K KETSU RE84 VCC_AUDIO 1.5k DE95 RE85 RE90 RE87 KETSU KETSU KETSU DE91 KETSU QE94A HEAT SINK QE94 ZE94 2SD2396/2SC3852 125V 2A QE94B VCC_AUDIO 26.5V_AUDIO 1-D8 4-A2 RE94 DE99 DE97 1/8W270 1SS355-TE17 MTZJ13C DE98 MTZJ13C GND_AUDIO 27WL56P REGULATOR (5/48)
- Page 47 PJ42A PLUG_2mm_6P_L\S6B-PH-K-S RA71 RA72 RA73 RA74 CHIP JP RA78 RA77 CHIP JP RA79 CHIP JP 27WL56P (6/48)
- Page 48 To SPK CABLE QB04 SPK-R 2SC2712Y RMT_IN 3.3V P601 PLUG_2.5mm_4P\B4B-EH-F1A RMT_FGND B11B-PH-K-S DB04 SCL-003MC3FXHJK PJ41A CB38 CB01 7L10V220u 25V0.1 RB24 RB22 KETSU RB09 DB23 GP1UE281RK0F 1SS355-TE17 RB08 Vout DB22 1SS355-TE17 CB03 CB02 DB20 25V0.1 7L10V220u UDZS TE-17 5.6B 27WL56P LED_RMT_HP (7/48)
- Page 49 OPEN R501 GJ16 R511 6.8k SHORT OPEN PV90 KRD-8622 GR34 PC-DSUB GR35 SHORT SHORT RR04 RR01 1/8W75 DR01 OPEN RR02 RR05 1/8W75 DR02 OPEN RR03 RR06 1/8W75 DR03 OPEN P902A B5B-PH-K-S DR04 DR05 OPEN OPEN P900A B9B-PH-K-S 27WL56P PC-IN_BOARD (8/48)
- Page 50 TLN3481GH 35V56uF BL_VCC P812B PLUG_3.96mm_5P\B5P-VH BL_VCC STARTUP_SUB 3-D2 STARTUP_SUB BL_VCC STARTUP_SUB RECTIFIED(-)_SUB 3-D2 RECTIFIED(-)_SUB BL_VCC RECTIFIED(-)\SUB VCC_LCD 2-D8 VCC_LCD BL_VCC RECTIFIED(+)_SUB 3-D2 RECTIFIED(+)_SUB BL_GND RECTIFIED(+)\SUB BL_GND BL_GND BL_GND BL_GND P805 B10B-PH-K-S PJ62A P813B P803A OPEN PLUG_2mm_12P\B12B-PH-K-S B4B-PH-K-S 27WL56P CONNECTOR(POWER_BOARD) (9/48)
- Page 51 CE55 TLP421F(GR)/PS2581L1(D) RE82 35V56uF 1-A1 R873 POWER_LCD RE59 1/6P1.5k 330k C813 63V0.33 QE64 Q883 BD4746G SE024N AC_DETECT 1-A1,1-B2 RE58 RE61 R816 22k_F 18k_F R874 RE56 RE60 SHORT 1.5k_F LIVE AREA C890 63V0.33 RE57 1.5k_F R890 CE53 B25V220n_K 27WL56P MAIN_POWER(POWER_BOARD) (10/48)
- Page 52 B560p 50V0.1 OPEN RE42 RE45 OPEN RE41 1.5k RE43 RE44 10k_F QE83 POWER_DB 1-A2 CE24 NJM431L QE53 50V0.1u RN1403 RE12 RE46 1/2R220 1.8k_F DE06 FR105-FL RE18 RE29 RK993DR22J OPEN CE21 OPEN CE16 35V56uF CE11 OPEN LIVE AREA 27WL56P SUB_POWER(POWER_BOARD) (11/48)
- Page 53 2SC2412K R859 R857 T801Z C852 B1000p R858 C851 10V1u T801 TRF3253AH R801 VR37 225J R899 RN14A1A825J D899 TNR15G471K P805B C801 AC275V0.22u F801A FUSE HOLDER NEUTRAL LINE F801B FUSE HOLDER F801 T6.3A L/250V P800 LIVE AREA 27WL56P Lock 2P_11.88mm_S AC_INPUT (12/48)
- Page 54 27WL56P SIGNAL ANALOG IN (13/48)
- Page 55 27WL56P SIGNAL D IN A (14/48)
- Page 56 27WL56P SIGNAL D IN B (15/48)
- Page 57 27WL56P SIGNAL HDMI (Link,I2C) (16/48)
- Page 58 27WL56P SIGNAL HDMI Rx#2 (Video/Audio) (17/48)
- Page 59 27WL56P SIGNAL HDMI Rx#3 (PWR,Audio) (18/48)
- Page 60 27WL56P SIGNAL HDMI AUDIO PLL (19/48)
- Page 61 27WL56P SIGNAL HDMI AUDIO DAC (20/48)
- Page 62 27WL56P SIGNAL HDMI AUDIO OUT (21/48)
- Page 63 27WL56P SIGNAL HDMI CONTROLLER (22/48)
- Page 64 27WL56P SIGNAL EEPROM1 (23/48)
- Page 65 27WL56P SIGNAL EEPROM2 (24/48)
- Page 66 Note: For POWER_DB_O (L: ON) line When power is ON, GATE is closed until turn ON DB. During POD STBY mode, it keeping ON, but shut-off circuit includes into DB. 27WL56P SIGNAL MICRO I/O (25/48)
- Page 67 402:3A;409:1B 27WL56P SIGNAL OCM MEMORY I/F (26/48)
- Page 68 401:1A;409:1B 27WL56P SIGNAL FLASH MEMORY (27/48)
- Page 69 27WL56P SIGNAL SYNC SEPA (28/48)
- Page 70 27WL56P SIGNAL E2P OTHER (29/48)
- Page 71 Note: For I2C Bus lines (SDA_STBY, SCL_STBY) : Normally, connecting to Cortez, When POD STBY mode, these are connected to DB. 27WL56P SIGNAL STD-BY MICRO (30/48)
- Page 72 27WL56P SIGNAL CORTEZ REG 1 (31/48)
- Page 73 27WL56P SIGNAL CORTEZ REG 2 (32/48)
- Page 74 27WL56P SIGNAL CORTEZ REG 3 (33/48)
- Page 75 27WL56P SIGNAL BOOT CONFIG (34/48)
- Page 76 27WL56P SIGNAL SERVICE CONNECTOR (35/48)
- Page 77 *I2C Bus Switching of Stand-By Micom SW1: H at 8V Line (Normally) ; Connect to Cortez SW2: L at 8V Line (POD STBY state) ; Connect to DB side 27WL56P SIGNAL I2C Switch (36/48)
- Page 78 27WL56P SIGNAL AUDIO (1/2) (37/48)
- Page 79 27WL56P SIGNAL AUDIO (2/2) (38/48)
- Page 80 27WL56P SIGNAL CORTEZ 1 (39/48)
- Page 81 27WL56P SIGNAL CORTEZ 2 (40/48)
- Page 82 27WL56P SIGNAL DDR I/F (41/48)
- Page 83 27WL56P SIGNAL DDR SDRAM (42/48)
- Page 84 27WL56P SIGNAL DDR TERMINATION (43/48)
- Page 85 27WL56P SIGNAL DCDC CONV. (44/48)
- Page 86 27WL56P SIGNAL LVDS OUT (45/48)
- Page 87 R/L U/D Normal Indication Flip Vertical Flip Horizontal Half Turn 27WL56P SIGNAL LVDS OUT(SHARP LCD) (46/48)
- Page 88 27WL56P SIGNAL Power Connector and Dimming (47/48)
- Page 89 27WL56P SIGNAL LVDS Power and Others (48/48)