Toshiba 42HL67 Service Manual
Toshiba 42HL67 - 42" LCD TV Manual
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UPC - 022265000458
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Toshiba 42HL67 manual content summary:
- Toshiba 42HL67 | Service Manual - Page 1
SERVICE MANUAL LCD Color Television 42HL67 Rev.1 For Technical Bulletins, Technical Tips, or other information regarding the service of this model, visit the Toshiba America Consumer Products National Service Division website at: www7.toshiba.com This model is classified as a green product (*1), - Toshiba 42HL67 | Service Manual - Page 2
PURPOSE. Toshiba shall not INSTRUCTION WARNING: Before servicing this chassis, read the "Safety Precaution" and "Product Safety Notice" instructions below. Safety Precaution WARNING: Servicing servicing with the power on. Disconnect the power plug to avoid electrical shock when replacing parts - Toshiba 42HL67 | Service Manual - Page 3
and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety as specified in the parts list may create electrical shock, fire, or other hazards. SAFETY INSTRUCTION WARNING: The - Toshiba 42HL67 | Service Manual - Page 4
eyes thoroughly with running water. 2. When attaching the LCD module to the LCD cover, position it appropriately and fasten at the position period of time can result in discoloration or stripes. Immediately remove any type of fluid from the screen. 6. Glass is used in the panel construction. Damage - Toshiba 42HL67 | Service Manual - Page 5
, use a wrist ground or anchor ground. 8. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for extended periods. 9. Do not store the LCD module below the temperature conditions described in the specifications. Doing so could result in freezing of the liquid crystal, loss of - Toshiba 42HL67 | Service Manual - Page 6
and press MUTE button twice on the remote control. Ļ 2. Press MUTE button again and hold button down. Ļ Service Mode display 3. While holding the MUTE button, press MENU button on TV set. Selecting the Adjusting Item Every pressing of CH or button in the service mode changes the adjustment items - Toshiba 42HL67 | Service Manual - Page 7
LED lights on the TV (at the bottom center of the TV) indicate the TV's status, as described below: Note: If the TV loses A/C power (e.g., a power outage occurs or the power cord is unplugged), when power is restored, the yellow LED will blink while the TV is booting until the remote control is - Toshiba 42HL67 | Service Manual - Page 8
Sound Analog or Digital? Digital Replace Digital Signal Processing Section, then suspect Analog. Questions or Statements in flow chart pertain to only the defined areas. It is assumed that all other inputs and functions operate correctly. Analog Processing includes: Composite Video/Audio S-Video - Toshiba 42HL67 | Service Manual - Page 9
. Replace Digital Signal Processing Section. Questions or Statements in flow chart pertain to only the defined areas. It is assumed that all other inputs and functions operate correctly. Analog Processing includes: Composite Video/Audio S-Video/Audio NTSC Tuner Video/Audio Digital Audio after - Toshiba 42HL67 | Service Manual - Page 10
of the unit? Suspect Power Supply, Low B Supply - Then Suspect system Control (SYSCON). Yes Use Blink Codes to help determine problem area. Questions or Statements in flow chart pertain to only the defined areas. It is assumed that all other inputs and functions operate correctly. Analog - Toshiba 42HL67 | Service Manual - Page 11
Dead set - No sound or picture Does No 3VDC appear at pin 3 of P806A when on-off is pressed? Yes Is Yes 5VDC present at pin 1 No of P806A when the unit is plugged in? Are any problem No LED indications exhibited after the power button is pressed? Yes Suspect the Low B supply, then the - Toshiba 42HL67 | Service Manual - Page 12
distorted video Does NO the back light function YES normally when the unit is turned on? YES Replace the LCD display panel. Is the screen discolored NO or does it have streaks or dark areas with no signal input? Examples YES Is the on screen display NO normal? Analog Is the problem associated - Toshiba 42HL67 | Service Manual - Page 13
NO Does the back light YES function and then turn off? Is NO 24 VDC present at pins 1 and 5 of P804 YES when the unit is turned on? Replace the LCD display. Replace the Main Power supply. NO Is 6VDC present at pin 8 YES of CN91A when the unit is turned on? Is YES 3.3 VDC present - Toshiba 42HL67 | Service Manual - Page 14
No or distorted Audio Digital Is problem associated with analog or digital inputs? Analog Using the power YES distribution diagram, are NO the voltages normal at CN90A and CN91B? Using the power NO distribution diagram, YES are the voltages normal at P812A and P812B? Suspect the digital - Toshiba 42HL67 | Service Manual - Page 15
. If this does not help, replace the LCD display. *** (24V-Pins 1-5 CN804) Operation of the inverter can be determined by placing a Suspect the back light supply source. Is the back NO light switching signal (3VDC Pin 1- CN61) present shortly after the power switch is pressed? YES scope - Toshiba 42HL67 | Service Manual - Page 16
U03D KEY U03B Front-AV U02A LOW-B U03A AV-TERM U01A POWER U04A SIGNAL U03C LED 15 - Toshiba 42HL67 | Service Manual - Page 17
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Stand Exploded View A425 A426 A427 A428 A429 21 - Toshiba 42HL67 | Service Manual - Page 23
Replacement Parts List Location A201 A320 A401 A420 A425 A426 A429 B001 C801 C802 LID BACK COVER ASSY, BACK COVER ASSY 75006553 LEG STAND KIT FIX 75007239 LEG FIX BKT ASSY FIX 75007238 LEG BASE ASSY FIX BB 75007210 LEG STAND WRENCH 75006117 DISPLAY, LC420WX5‐SLC1 76503510 CAPACITOR, PLASTIC - Toshiba 42HL67 | Service Manual - Page 24
Replacement Parts List Location C883 C884 C885 C886 C887 C888 C889 CE01 CE02 CE10 CE11 D801 D810 D811 D812 D813 D831 D840 D860 D861 D8610 D862 D863 D864 D865 D866 D867 D870 D871 Part No. Description 76668339 CAPACITOR, ELECTROLYTIC, 35V 3.3UF M 76073181 CAPACITOR, ELECTROLYTIC, 35V 56UF M - Toshiba 42HL67 | Service Manual - Page 25
Replacement Parts List Location D872 D873 D874 D880 D881 D882 D883 D884 D885 D886 F860 F870 F880 F882 F883 F884 F885 GR70 K902 L801 L802 L841 L842 L843 L860 L861 L870 L871 Part No. Description 75002164 DIODE, FMEN‐220A(LF023‐108) 23357512 DIODE, AL01Z 23357512 DIODE, AL01Z 23357709 DIODE - Toshiba 42HL67 | Service Manual - Page 26
Replacement Parts List Location L872 L874 L875 L876 L878 L880 L881 LE70 LE71 LE72 LE75 23248432 COIL, CHOKE, TLN3499AH 75006118 WIRE HARNESS LVDS, V90A00029800 23713702 PLUG, 2P 11.88MM W VT 75002678 POWER CORD, INQ2682(1) 23713757 PLUG, 6P 2.5MM G, B6B‐EH‐F1‐TV4 23713757 PLUG, 6P 2.5MM G, - Toshiba 42HL67 | Service Manual - Page 27
Replacement Parts List Location QE72 QE90 QE91 QE92 QE93 QE94 QE95 QE96 QE97 R801 R802 R810 R875 R876 R877 R878 R880 R8801 R8802 R8804 R8805 R8806 R8807 R8808 R8809 R882 R883 R884 Part No. Description 23205330 TRANSISTOR, RN1403(F) 75006069 IC, SI‐8001FFE 23205313 TRANSISTOR, 2SC1815‐Y(F) - Toshiba 42HL67 | Service Manual - Page 28
Replacement Parts List Location R885 R887 RE01 RE02 RE03 RE04 RE05 RE06 RE07 RE08 RE90 RE91 RE92 RE94 RE940 RE941 RE95 RE96 RE960 RE961 RE97 RE98 RE99 SR80 T801 T802 T860 T861 T880 Part No. Description 75005706 RESISTOR, RGC2‐0.22‐OHM‐J 76552221 RESISTOR, OXIDE METAL FILM, 1/2W 220 OHM J - Toshiba 42HL67 | Service Manual - Page 29
Replacement Parts List Location U01A U02A U03A U03B U03C U03D U04AS W661 Part No. Description 75006107 PWU, POWER, PE0306D1 75006108 PWU, LOWB, PE0307D1 75006083 PWU, TN_AV, PE0248C1 75006110 PWU, F‐AV, PE0248C2 75006111 PWU, LED/IR_PASS, PE0248C3 75006112 PWU, KEY, PE0248C4 75006509 PC - Toshiba 42HL67 | Service Manual - Page 30
Replacement Parts List 29 - Toshiba 42HL67 | Service Manual - Page 31
Replacement Parts List 30 - Toshiba 42HL67 | Service Manual - Page 32
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SERVICE MANUAL
LCD Color Television
42HL67
Re
v.1
This model is classified as a
green product
(*1), as indicated by the underlined serial number.
This Service Manual describes replacement parts for the green product. When repairing this
green product, use the part(s) described in this manual and
lead-free solder
(*2).
For (*1) and (*2), refer to
GREEN PRODUCT PROCUREMENT
and
LEAD-FREE
SOLDER
.
© TOSHIBA CORPORATION
200
9
For Technical Bulletins, Technical Tips, or other information regarding the
service of this model, visit the Toshiba America Consumer Products National
Service Division website at:
www7.toshiba.com