Toshiba 14DL74 Service Manual
Toshiba 14DL74 Manual
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Toshiba 14DL74 manual content summary:
- Toshiba 14DL74 | Service Manual - Page 1
SERVICE MANUAL FILE NO. 050-200414 LCD TELEVISION 14DL74 / 20DL74 DOCUMENT CREATED IN JAPAN, May, 2004 - Toshiba 14DL74 | Service Manual - Page 2
Table of Contents WARNINGS ...3 SERVICE SAFETY PRECAUTIONS ...4 Examples of Marks...4 HANDLING THE LCD MODULE ...5 Safety Precautions ...5 Precautions for Handling the LCD Module...5 LOCATION OF CONTROLS ...6 TV Front ...6 TV Rear...6 Remote Control ...7 LAYOUT OF MAJOR BOARDS ...8 MECHANICAL - Toshiba 14DL74 | Service Manual - Page 3
the power plug before starting work can result in electrical shock. Depending on the model, use an insulation transformer or wear gloves when servicing with the power on, and disconnect the power plug to avoid electrical shock when replacing parts. In some cases, alternating current is also - Toshiba 14DL74 | Service Manual - Page 4
of injury or even death in the event of operational error. CAUTION Indicates a hypothetical situation in which service personnel and nearby third parties, or even end users after the service operation is completed, could possibly be in danger of injury, or where there could be physical damage in - Toshiba 14DL74 | Service Manual - Page 5
could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage. CAUTION The metal edges of the LCD module are sharp, so use caution to avoid injury. 3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not - Toshiba 14DL74 | Service Manual - Page 6
LOCATION OF CONTROLS TV Front VOLUME -/+ TV/VIDEO Headphones Jack TV Rear AV1 Audio (R) Audio (L) Video S-Video PR PB Y Power Jack Channel / Power button Blue LED Indicator (Power On) Red LED Indicator (Stand by) Audio Output (R) - Toshiba 14DL74 | Service Manual - Page 7
The illustration shown displays the Remote Control Buttons. POWER turns the TV on and off. MUTE turns the sound on and off. TV selects TV antenna as the input signal. AV1/AV2 selects the AV input signal from one of these connectors. Number Buttons allow direct access to channel positions. - Toshiba 14DL74 | Service Manual - Page 8
LAYOUT OF MAJOR BOARDS Key/control board Main board Inverter board Light receiving board 8 - Toshiba 14DL74 | Service Manual - Page 9
MECHANICAL DISASSEMBLY B214 B215 A104 B211 A106 A108 B210 A102 B211 A107 9 - Toshiba 14DL74 | Service Manual - Page 10
B204 B209 B207 B208 B205 B214 B212 B203 B202 U004 B209 W601 B210 A101 U003 10 - Toshiba 14DL74 | Service Manual - Page 11
U902 B211 B206 U002 B208 U001 B201 E901 A105 11 - Toshiba 14DL74 | Service Manual - Page 12
PACKING DISASSEMBLY K901 Y150 Y151 Battery A702 Y101 Accessory Box LCD TV Set A703 A701 12 - Toshiba 14DL74 | Service Manual - Page 13
WIRING CONNECTION DIAGRAM Key/control board Inverter board Main board Light receiving board Right speaker Left speaker 13 - Toshiba 14DL74 | Service Manual - Page 14
CIRCUIT BOARD DIAGRAMS MAINBOARD 0171-4 14 - Toshiba 14DL74 | Service Manual - Page 15
15 - Toshiba 14DL74 | Service Manual - Page 16
0171-5 16 - Toshiba 14DL74 | Service Manual - Page 17
17 - Toshiba 14DL74 | Service Manual - Page 18
KEY/CONTROL BOARD LIGHT-RECEIVING BOARD 18 - Toshiba 14DL74 | Service Manual - Page 19
EARPHONE BOARD 19 - Toshiba 14DL74 | Service Manual - Page 20
PRODUCT SAFETY NOTICE. Do not degrade the safety of the receiver through improper servicing. NOTES: 1. RESISTOR Resistance is shown in ohm [K = 1.000, point indicated to chassis ground, using a color bar signal with all controls at normal, line voltage 120 volts. 5. Waveforms are taken receiving - Toshiba 14DL74 | Service Manual - Page 21
POWER_KEY IR_SIGNAL BLK_ADJ I2C_SCL I2C_SDA I2C_SCL I2C_SDA VOL_DOWN_KEY VOL_UP_KEY CH_DOWN_KEY CH_UP_KEY INPUT_KEY POWER_KEY IR_SIGNAL BLK_ADJ AUDIO_OUT_R AUDIO_OUT_L 14-IO_CONNECTOR MADDR[0..10] MD[0..31] RA[0..7] GA[0..7] BA[0..7] RB[0..7] GB[0..7] BB[0..7] W981616BH-6 MDQM0 MDQM1 MDQM2 MRAS - Toshiba 14DL74 | Service Manual - Page 22
/0603 BLK_ADJ 5 R R R R 1 3 5 7 DA0 DA1 DA2 DA3 DA4 7 DA[0..4] DA[0..4] +5VSB SD1 SD3 SD5 SD7 EA SA14 SA12 SA10 SA8 RESET JP1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 NI SD0 SD2 SD4 SD6 ALE PSEN SA15 SA13 SA11 SA9 +5VSB I2C_SDA I2C_SCL J2 1 2 3 4 NI/4 pin - Toshiba 14DL74 | Service Manual - Page 23
1,12 3230_VS 12 3230_FID 1,12 3230_HREF 1 CLAMP R148 NI/0603 R150 1M/0603 Y2 14.318MHZ/49US 1Y Y2 SCALER_AGND AVDD 3G C167 27P/0603/NPO/50V C168 27P/0603/NPO/ 9 ALE 9 WR 9 RD 9 RST_SCALER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 - Toshiba 14DL74 | Service Manual - Page 24
27 28 29 30 31 32 20 19 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 14 36 DQM0 DQM1 17 16 15 18 35 34 /RAS /CAS /WE /CS CLK CKE W981616BH-6 SMD NC 27 28 29 30 31 32 20 19 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 14 36 DQM0 DQM1 17 16 15 18 35 34 /RAS /CAS /WE /CS CLK CKE 120mA W981616BH-6 SMD - Toshiba 14DL74 | Service Manual - Page 25
/0603 1 3230_Y 1 3230_Cr Q38 2 1 3 2N3904/SOT23 R265 Y1 1K/0603 Q39 2 1 3 2N3904/SOT23 R268 Cr1 1K/0603 R221 0/0603 R280 NI/0603 + C299 + C300 C302 14 OSDB C308 224P/0805/X7R/16V YC_C COMPOSITE YC_Y C305 474P/0805/X7R/16V Y_SINGAL C306 474P/0805/X7R/16V 102P/0603/X7R/50V C303 - Toshiba 14DL74 | Service Manual - Page 26
0603 C355 683P/0603/Y5V/50V RED BOX SDO SCK SDA VIN/INTRO VDD VSSA REF 18 17 16 15 14 13 12 11 10 R250 10K/1%/0603 0/0603 R239 1K/0603 R240 1K/0603 VCC L58 MLB-160808-0120L-N2 10,12 VIDEO_OUT 12 Title V-CHIP & CC Size Document Number A4 Date: Rev Z86129 0.01 Sheet 14 of 14 26 - Toshiba 14DL74 | Service Manual - Page 27
223P/0603/X7R/50V 473P/0603/X7R/50V C262 333P/0603/X7R/50V C269 273P/0603/X7R/25V C267 822P/0603/X7R/50V I2C_SDA 1,2,3,6,9,12,14 I2C_SCL 9 2.2uF/50V/4*7 4.7K/0603 C270 + R180 2.2uF/50V/4*7 4.7K/0603 C271 + R182 R181 2.4K/0603 R183 2.4K/0603 AUDIO_L_OUT 11 AUDIO_R_OUT 11 GND GROUND - Toshiba 14DL74 | Service Manual - Page 28
C277 NI/0603 C281 NI/0603 AUDIO_OUT_L 5 AUDIO_OUT_R 5 GND GROUND Title POWER AMPLIFIER Size A4 Date: Document Number TDA7499 2X6W Sheet 11 of Rev 0.01 14 - Toshiba 14DL74 | Service Manual - Page 29
MTS_OUT_L 2 MTS_OUT_R AUDIO_AV1_L AUDIO_AV1_R AUDIO_AV2_L AUDIO_AV2_R 9 I2C_SCL 1,2,3,9,10,12,14 I2C_SDA R144 R147 R141 470K/0603 R140 470K/0603 R139 470K/ C148 2.2uF/50V/4*74 + C149 2.2uF/50V/4*7 8 + C150 2.2uF/50V/4*710 + 14 15 17 18 30 29 31 100/0603 MTV-L MTV-R V1-L V1-R V2-L V2-R - Toshiba 14DL74 | Service Manual - Page 30
+5V AF/MPX NC NC +5V SCL SDA AS 15 16 17 18 9 10 11 12 13 14 1 2 3 4 5 6 C361 220P/0603/NPO/50V + R51 NI/0603 R52 0/0603 TV_M 2 220uF/16V/6*11 C68 C65 C66 104P/0603/Y5V/50V C69 1000uF/10V/8*14 1000uF/16V/10*14 103P/0603/Y5V/50V 0/1206/NL252018 3.3UH/1206L/1S0MDR55 330/0603 TV_IN - Toshiba 14DL74 | Service Manual - Page 31
C48 33uF/50V/5*7 I2C_SCL 9 R47 100/0603 C50 2.2uF/50V/4*7 I2C_SDA 1,3,6,9,10,12,14 + + + C51 4.7uF/50V/5*11 C52 NI R48 0/0603 TV_M 3 C53 R49 102P/0603/X7R/ 50V NI/0603 C55 333P/0603/X7R/16V 14 SAP DET 15 L+R REF + C57 2.2uF/50V/4*7 16 NC 17 PILOT DET - Toshiba 14DL74 | Service Manual - Page 32
PBA7 PBA6 PBA5 PBA4 PBA3 PBA2 PBA1 PBA0 CN19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 PBB7 PBB1 PBB2 PBB3 PBB4 PBB5 PHS PVS U12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 VDD TXIN5 TXIN6 TXIN7 GND TXIN8 TXIN9 - Toshiba 14DL74 | Service Manual - Page 33
50V R75 22/1206 Big Current R76 Q12 1 1K/0603 SMBT3904/SOT23 SMD S 2 1 Q13 2S 3 3S D8 D7 D6 VCC 3A L17 1000UF/10V/8*14 1000UF/10V/8*14 100UH/TC6052 R80 R81 10/0603 4 G D5 L60 3 CEM9435A SMD 1 Q14 2 SMBT3906/SOT23 SMD MLB-201209-0080P-N2 C93 + 1 D3 C96 1N5822/DIP + C94 - Toshiba 14DL74 | Service Manual - Page 34
5.1K/0805 NI/0805 3K/0805 CN4 1 2 3 4 IR/LED 5 6 S6B-PH-K 90D Title I/O CONNECTOR Size Document Number A KEYPAD / IR / LED Date: Sheet 5 of Rev 0.03 14 - Toshiba 14DL74 | Service Manual - Page 35
C366 NI/0603 R14 75/0603 C367 NI/0603 9 I2C_SCL 2,3,6,9,10,12,14 I2C_SDA I2C_SCL I2C_SDA C26 473P/0603/X7R/50V C27 102P/0603/X7R/50V C28 + 3 22uF/25V/4*5 R40 R41 5.1K/0603 1K/0603 0171-4 TOSHIBA USA Version For AU 20" Panel Title USA 480P Size Document Number Rev MST9883 0 Date: Sheet - Toshiba 14DL74 | Service Manual - Page 36
IR BOARD CN1 1 2 3 4 5 6 CON5 5VSB D5 3 2 1 VCC COM GND U1 IR_RECIVER 5VSB R1 100 VCC GND S_OUT BAV99/SMD 5VSB 3 2 1 5VSB D3 3 2 1 VCC COM GND BAV99/SMD D1 LED_R RED 5VSB D4 3 2 1 VCC COM GND BAV99/SMD D2 LED_B BLUE + C1 C2 100UF/10V 104 36 - Toshiba 14DL74 | Service Manual - Page 37
EARPHONE BOARD 37 CN1 L_EAR 7 680£[/DIP 1/8W R1 R_SPK 6 L_SPK 5 R_EAR 4 680£[/DIP 1/8W R2 L_OUT 3 R_OUT 2 GND 1 EARPHONE J1 1 2 3 4 5 6 7 8 SPK_R_IN GND SPK_L_IN GND AUDIO_L_IN GND AUDIO_R_IN GND B5B-PH-K AUDIOGND - Toshiba 14DL74 | Service Manual - Page 38
KEYPAD BOARD 1 S1 S1 3 2 S2 S2 4 1 S1 S1 3 2 S2 S2 4 1 S1 S1 3 2 S2 S2 4 1 S1 S1 3 2 S2 S2 4 1 S1 S1 3 2 S2 S2 4 1 S1 S1 3 2 S2 S2 4 SW1 SW_TACT SW2 SW_TACT SW3 SW_TACT SW4 SW_TACT SW5 SW_TACT SW6 SW_TACT POWER_KEY CH_UP_KEY CH_DOWN_KEY VOL_UP_KEY VOL_DOWN_KEY INPUT_KEY J1 7 6 5 4 3 2 1 - Toshiba 14DL74 | Service Manual - Page 39
parts, in order to assist in processing, be sure to include the Model number and Description. 14DL74 Safety Location No. TOSHIBA SN Parts No. (GOLANA) Description U001 72001930 AFT0-1014001715-14 A/D BD Sub Ass'y U002 72001908 AFT0-2000001765-US SW BD Sub Ass'y U003 72001909 AFT0-6000001742 - Toshiba 14DL74 | Service Manual - Page 40
Remote Control-English Panel TFT W601 72001906 EF61-3400500604 Square Speaker 14"(B) 20DL74 Specification SP-12A+IS-038A L=2M CT-864-CN14 AU 14" T140VN01 34*34 6Ω [/5W(MAX) L=28/ 21cm Safety Location No. TOSHIBA S3x8 S3x10 M3x4 M3x5 M4x6 Hinge 14DL74 GT140/201A English 210x297mm TAA-Y58 19V - Toshiba 14DL74 | Service Manual - Page 41
Height 19.72 inches (501 mm) Depth 10.04 inches (255 mm) 14DL74: 10.14 lbs (4.6 kg) 20DL74: 19.62 lbs (8.9 kg) Remote Control (CT-864) and two "AAA" batteries Power cord AC adapter (TAA-Y58) (The AC adapter can be only used for this LCD TV. Do not use for other apparatus.) Owner's Manual Design and - Toshiba 14DL74 | Service Manual - Page 42
TOSHIBA CORPORATION 1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN
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SERVICE MANUAL
FILE NO. 050-200414
14DL74 / 20DL74
LCD TELEVISION