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.
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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 •...
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.
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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.
SERVICE MODE 1. ENTERING SERVICE MODE 1) Press o button once on 2) Press o button again and 3) While pressing the o button, Remote Control. keep pressing. press MENU button on TV set. Item Data or Sound Mute (Service mode display) 2.
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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.
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The diagnosis will begin to check if interface among IC’s is executed properly. 2) During diagnosis, the following displays are shown. WL48_ASIA_000 37WL48A Firmware: Version information of microprocessor In case of file name : WL48_ASIA and Version : 1.00 indicates[WL48_ASIA_100].
DESIGN MODE 1. ENTERING DESIGN MODE 1) Select the Service mode. 2) While pressing CALL button on Remote 3) The following displays and press MENU button on TV. are shown on the screen Press Press WL48_ASIA_039 (Design mode) Version information of microprocessor Main tuner information Sub tuner information...
LOCATION OF CONTROLS TV top view Power switch Top view You can swivel the TV screen. Swivel angle: 15 degrees to left and right. MENU Input source Volume - + selection Menu MENU Program position Menu Front TV front view On-timer indicator (green) Power ON indicator (red) Remote sensor...
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Back Right side view Left side view (2) VIDEO 2 input terminals (1) VIDEO 1 input terminals TV back view (C1) COMPONENT VIDEO INPUT Press here to Card into the terminals open the door. slot (C2) Left side view COMPONENT VIDEO INPUT terminals Power cord...
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: To control TV VCR : To control VCR DVD : To control DVD When in VCR or DVD mode: When in TV (Teletext) mode: (Only for Toshiba VCR/DVD To reveal concealed text players) To hold a wanted page to PAUSE...
LAYOUT OF MAJOR BOARDS U001A PB UNIT SIGNAL U003A PB UNIT SCALER U002A PB UNIT LOWB U002B PB UNIT KEY U001D PB UNIT POWER SW U001B PB UNIT FRONT AV U001C PB UNIT LED/REM U800 POWER UNIT, POWER BLOCK MODULE - 14 -...
• 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 : 37WL48A/37WL48E/37WL48R/37WL48T Capacitors ..... CD Ceramic Disk : Plastic Film : Electrolytic Resistors ....
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Location Location Parts No. Description Parts No. Description C6073 24100104 CERAMIC CHIP, 25V F 0.1UF Z CS15 24092731 CERAMIC CHIP, 16V B 1UF K C6075 24619313 ELECTROLYTIC, 16V 470UF, 16SGV470M8X10.5 CS16 24092731 CERAMIC CHIP, 16V B 1UF K C6088 24619313 ELECTROLYTIC, 16V 470UF, 16SGV470M8X10.5 CS17 24092726...
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Location Location Parts No. Description Parts No. Description CV40 24100104 CERAMIC CHIP, 25V F 0.1UF Z R871 24000356 METAL FILM, 1/4W 820 OHM F CV41 24100104 CERAMIC CHIP, 25V F 0.1UF Z R872 24011102 CHIP, 1/20W 1K OHM J CV42 24100104 CERAMIC CHIP, 25V F 0.1UF Z R896...
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EARPHONE JACK A709 23946938 PACKING, CENTER PACKING P662 23365500 EARPHONE JACK Y101A 23566574 OWNERS MANUAL, ENGLISH LCD O/M 37WL48A/E/T P801 23372011 POWER CORD, CEE, VOLEX Y101H 23566575 OWNERS MANUAL, CHIN TRADI LCD O/M 37WL48E 23372011 POWER CORD, CEE, VOLEX Y101J...
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SCREW, PP 5X16 SW+W SBN PP 5X16 SW+W SBN A445 23533113 COVER, BC STAND COVER A450 23533114 COVER, BC TERMINAL COVER A730A 23512379 LABEL, MODEL NAME 37WL48A A730E 23512378 LABEL, MODEL NAME 37WL48E A730T 23512380 LABEL, MODEL NAME 37WL48T - 28 -...
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SCALER BOARD PD1901J1 (U003A) TOP (COMPONENT) SIDE - 39 - - 40 -...
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SCHEMATIC DIAGRAM MODEL : 37WL48A / 37WL48E / 37WL48R / 37WL48T WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" 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.
CIRCUIT BLOCK DIAGRAM 9V(8V) 5V 32V H001(MAIN-TIF ) Q6001(MSP3410G-QI-C12-100) ENG39A07GF QS101 ANT in 24V INV Q610(TA8246AHQ) typ2 M Correspondence DSP(APRO) (BA10358F) 12V LCD DACM_R/L R/Lin R/L-OUT SC1_OUT DACM_SUB TP-12 RESE T VIDEO level AC IN 1.0v pp QS102 MAIN POWER 1H216W (BA10358F) SC1-IN SC2-OUT...
SCHEMATIC DIAGRAM MODEL : 37WL48A / 37WL48E / 37WL48R / 37WL48T WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" 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.
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3.3VA 3.3VA POWER_SIG PROTECT 3.3VA PROTECT 3.3VA ACDETECT 5V-1 15 5V-1 TO POWER SOUND GND 16 GND SOUND GND SOUND GND SOUND GND POWER_TV POWER_SIG POWER_LCD ACDETECT STOP_FAN STOP_FAN PJ84B PJ85B OPEN OPEN PJ12B OPEN 37WL48A/E/R/T LOWB (1/2) SHEET-1/2 (16/59)
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R897 OPEN GJ20 STOP_FAN OPEN Q829 D897 SI-3090CA OPEN TO FAN P818 Q829A R838 OPEN L839 D832 D833 TRF4100AZ R898 RU4YX RK44 OPEN /OFF C837 16V47 C835 C839 C899 STOP_FAN 16V47 M0.47 OPEN D898 OPEN 37WL48A/E/R/T LOWB (2/2) SHEET-2/2 (17/59)