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Summary of Contents for Roadstar TVD-1438
- Page 1 TVD-1438...
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Page 2: Safety Precautions
SAFETY PRECAUTIONS IMPOTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics.These parts are identified by in the Schematic Diagram and Replacement parts List. It is essential that these special safety parts’ should be replaced with the same components as recommended in this manual to prevent X-RADIATION,Shock,Fire,or other Hazards. -
Page 3: Servicing Precautions
SERVICING PRECAUTIONS CAUTION:Before servicing receivers covered by this ser- easily called Electrostatically Sensitive(ES)Devices.Ex- vice manual its supplements and addenda,read and follow amples of typical ES devices are integrated circuits and the SAFETY PRECAUTIONS on page 3 of this publication. some field effect traansistors and semicounductor NOTE:lf unforeseen circumstances create conflict between “chip”components.The following techniques should be used the following servicing precautions and any of the safety... - Page 4 SERVICING PRECAUTIONS type solder removal device or with solder braid. 2.Bend the two remaining leads perpendiculay to the cir CAUTION:Work quickly to aviod overheating the cuit board. circuiboard printed foill. 3.Observing diode polarity wrap each lead of the new 6.Use the following soldering technique. diodearound the corresponding lead on the circuit board.
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Page 5: Location Of Controls
LOCATION OF CONTROLS 1. Speaker 2. Power Button 3. Remote Sensor 4. Channel Buttons 5. Open/Close Button 6. DVD Loader 7. Volume Buttons 8. DVD Play Button 9. DVD Stop Button 10. TV Menu Button 11. TV/AV/DVD Button 12. Earphone Jack 13. - Page 6 LOCATION OF CONTROLS TV/AV Button Standby Button Numberic Buttons TV Menu/Navigation Arrows Buttons Channel Button DVD Navigation Up Button DVD Navigation Left Button DVD Enter Button DVD Menu Button Pause/Step Button Play Button Stop Button Zoom Button Repeat Button Subtitle Button Search Button Setup Button Clear Button...
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Page 7: Operating The Tv
OPERATING THE TV Using the remote control Any object between the remote control and the main unit will block the path of the beam when it is being used. Dark walls,direct sunshine or very bright light will reduce the remote control sensitivety. Hold the remote control within an angle of about 30 °... -
Page 8: Test Equipment
TEST EQUIPMENT 1.Colour Bar/Dot/Cross Hatch 5.High Voltage Meter 2.Oscilloscope 6. Ampere Meter (0.5 Class,DC 3mA Max.) 3.Vacuum Tube Voltmeter 7. Demagnetizing Coil 4. Volt Ohumeter 8. Closed Caption Encoder 9. High Pot Tester 1. B+ADJUSTMENT 1. Connet a digital voltmeter to B+ and Ground. 2. - Page 9 VI. G2 VOLTAGE ALIGNMENT 1.Receive a grey scale pattern. 2.Enter the SERVICE MODE to select the TV. 3.Press the button then the TV will become Horigontal Line. 4.To adjust the screen VR to make the Horigontal Line just illuminate. 5.After a justment is completed,press the button then the TV Screen will become Normal.
- Page 10 SERVICE MODE ALIGNMENT STEPS 1. Press the FACTORY button to enter to the service mode. 2. Press the --/- button to change the desired item page. 3. Press the Navigation Arrows button to choose the desired item to be adjust. 4.
- Page 11 TAKE OFF 0 / 1 № Chroma BPF/Take off switch; Compensate SAW Filt er effect “ 1 ”=” Take off”; “ 0 ”=” BPF ” C ANGLE 95 0 / 1 № Chroma relational angle of demodulationswitch; Status ‘ 0 ’ = 103degree --Standard value; ‘ 1 ’ = 95d egree;...
- Page 12 BLK STRE. OFF 0 / 1 Black Stretch Function ON / OFF; 0=ON; 1=OFF ◆ BLK STRE. CHANG 0 / 15 Charging time adjustment; ◆ BLK STRE. DISCHA 0 / 15 Discharging time adjustment; ◆ BLK STRE. GAIN 0 / 1 Black Stretch Gain Switch;...
- Page 13 SVHS ON / OFF SVHS (Y / C) Input Function Selection; ◆ ON / OFF YUV Input Function Selection; ◆ ON / OFF DVD Input Function Selection; ◆ ON / OFF Sound System DK Function Selection; ◆ ON / OFF Sound System I Function Selection;...
- Page 18 CT908 POWER&AUDIO STANDBY STANDBY STANDBY SCART_SW SCART_SW SCART_SW LDON SCART_TV LDON LDON SCART_TV SCART_TV SCART_RGB SCART_RGB SCART_RGB RF_SDEN RF_SDEN RF_SDEN CVBS1/Y CVBS1/Y CVBS1/Y RF_SCK CVBS2 RF_SCK RF_SCK CVBS2 CVBS2 RF_SDA RF_SDA RF_SDA Y/CB Y/CB Y/CB C/CR C/CR C/CR CD_DVDSW CD_DVDSW CD_DVDSW MIC_MUTE MIC_MUTE...
- Page 19 +3.3V 4.7K SA16 +3.3V 4.7K SA17 MODE I2C_SCK 4.7K SA18 104P I2C_SDA 4.7K SA19 VFD PANEL I2C_SDA SCART_SW 24C02/SOP SCART_SW /FWR SCART_TV DGND SCART_TV VFD_CS I2C_SCK /PSEN SCART_RGB IR_INT SCART_RGB /PSEN VFD_CLK PAUSE OP/CL IR_INT VFD_SDA I2C_SCK CON7 I2C_SDA +3.3VV P4.3 FB600 +3.3V...
- Page 20 +12V +1.8V 800mA +3.3VS -12VA +12VA AVDD AVCC AIC1117ADJ AIC1117-3.3 +3.3V_IN +3.3V SPDIF Output FB80,1206 +12V 220(0805) EC10 R167 SPDIF+ 220(0805) EC11 EC12 -12V EC13 C169 FB600 EC14 C170 FB80 800mA 100P OPTICAL OUT +3.3V 47u/16V 104P 100u/16V 47u/16V 104P 104P 104P STANDBY...
- Page 21 VREF25 VREF21 VREF25 RFVCC1 RFVCC FB600 RFVCC Sanyo only C118 C119 EC43 RFVCC R106 R105 MEI- R107 2.2K C117 EC42 104P 104P 100u/16V 1.5K C120 104P 100u/16V FOCUS+ C121 104P C122 104P FOCUS- 3.3P C125 TRACK- SGND C123 104P C124 104P Sanyo HD60 Hitachi 1200S...
- Page 25 TV+DVD FUNCTIONAL BLOCK DIAGRAM INFRA U101 IC 602 +5V-3 -RED IIC BUS IIC BUS TUNER 24C08 RECEIVER +33V EEPROM +5V-1 CVBS Q101 REMO IN DVD TRIGGERV IC 101 H SYNC +5V-3 DVD ON/OFF M61264FP IC301 V SYNC IC302 SIGNAL AUDIO IC 601 PROCESSING M37160FP...
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Page 26: Wiring Diagram
FRONT AV PCB CRT PCB CN402 CN303 CN302 MAIN PCB CN401 CN901 CN701 CN301 CN201 POWER SWITCH PCB CN101 CN304 CN307 CN302 CN102 CONTROL PCB AC INPUT EARPHONE PCB DVD PCB WIRING DIAGRAM SPEAKER DVD LODA PCB...
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