Color television/video cassette recorder (68 pages)
Summary of Contents for Roadstar TLV-1081XT
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TLV-1081XT SERVICE MANUAL COLOR TELEVISION/VIDEO CASSETTE RECORDER ORIGINAL MFR’S VERSION B Design and specifications are subject to change without notice.
SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, Safety is secured against an X-ray by consider- they are indicated with the labels or seals on the ing about the cathode-ray tube and the high cabinet, chassis and parts.
CONTENTS SERVICING NOTICES ON CHECKING ..................A1-1 HOW TO ORDER PARTS ......................A1-1 CONTENTS ..........................A2-1 GENERAL SPECIFICATIONS ....................A3-1~A3-6 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS ..........B1-1, B1-2 2. REMOVAL OF DECK PARTS .................... B2-1~B2-5 3.
GENERAL SPECIFICATIONS G-1.Outline of the Product inch( 228.6 mmV):Measured diagonally Color CRT 76 degree deflection -Speed 1/2" Video Cassette Recorder Recorder/Player VHS-C Player G-2.VCR Format VHS Standard NTSC SECAM PAL-M PAL-N VHS Hi-Fi Audio System G-3.Video Recording System :Rotary, slant azimuth two head helical scan system Luminance Component :FM recording Chrominance Component...
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GENERAL SPECIFICATIONS G-15.Antenna Input Impedance VHF/UHF 75 ohm unbalanced G-16.Tuner and Receiving channel 1Tuner System 2Tuner System Tuner : Contactless Electric tuner Oscar(W/O HYPER) Oscar(W/ HYPER) France CATV) Others channel coverage (SECAM) (PAL) E 2~E4 , X~ Z+2 , S1~S10 , E5~E12 , S11~S41 , E21~E69 Tuning System Frequency syn.
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GENERAL SPECIFICATIONS G-25.Power Consumption: 50 W at AC (Approx.) 50 W at DC (at TV and VCR ON) Stand by: W at AC Per Year: - kWh / Year G-26.Dimensions(Approx.) 287 mm(W) 333.5 mm(D) 319 mm(H) G-27.Weight(Approx.) Net : 8.8 Kg ( lbs) Gross: 10.5 Kg (...
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GENERAL SPECIFICATIONS G-37.Terminals VHF/UHF Antenna Din Type F-Type France Type Front Video Input (RCA ø8.3) Front Audio Input (RCA ø8.3) Rear Video Input (RCA ø8.3) Rear Audio Input (RCA ø8.3) Rear Video Output (RCA ø8.3) Rear Audio Output (RCA ø8.3) Audio Output(Rear) Phono Jack (RCA ø8.3) 21 Pin (x 1 )
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GENERAL SPECIFICATIONS G-42.EXT Speaker W/Imp None G-43.Carton Master Carton: Need No Need Content: ---- Material: ---- / ---- Corrugated Carton Dimensions: ---- mm(W) ---- mm(D) ---- mm(H) Description of Origin Gift Box Material Double/Brown Corrugated Carton ( with Photo Label) Double/White Corrugated Carton ( with Photo Label) Double Full Color Carton W/Photo...
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GENERAL SPECIFICATIONS G-46.Switch Front Power(Tact) Channel Up Volume Up Play Channel Down Volume Down Pause/Still F.FWD/Cue Rew/Rev System Select Eject/Stop Rec/OTR One Touch Playback Main Power S W Rear Color On/Off (SECAM only) Degauss Main Power S W AC/DC G-47.Magnetic Field BV : +0.45G BV :...
DISASSEMBLY INSTRUCTIONS REMOVAL OF MECHANICAL PARTS 1-3: TV/VCR BLOCK (Refer to Fig. 1-3) Remove the 2 screws 1. AND P.C. BOARDS Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP351, CP757, CP302, CP403 and CP401). Remove the 4 screws 1. Unlock the support 2.
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DISASSEMBLY INSTRUCTIONS 1-5: DECK SHIELD PLATE AND BOTTOM SHIELD PLATE (Refer to Fig. 1-5) Remove the 2 screws 1. Remove the 4 screws 2. Remove the screw 3. Remove the Deck Shield Plate in the direction of arrow (A). Remove the screw 4. Deck Chassis Remove the Bottom Shield Plate in the direction of arrow (B).
DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DECK PARTS NOTE When you install the Tape Guide L, install as shown in the 2-1: TOP BRACKET (Refer to Fig. 2-1) circle of Fig. 2-3-B. (Refer to Fig. 2-3-B) Remove the 2 screws 1. Slide the 2 supports 2 and remove the Top Bracket.
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DISASSEMBLY INSTRUCTIONS 2-6: LINK ASS'Y (Refer to Fig. 2-6) 2-9: TENSION ASS'Y (Refer to Fig. 2-9-A) Set the Link Ass'y to the Eject position. Move the Inclined S Ass'y to the back side. Unlock the support 1 and remove the S Reel Stopper. Remove the (A) side of the Link Ass'y first, then remove the (B) side.
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DISASSEMBLY INSTRUCTIONS 2-11: S REEL/T REEL ASS'Y (Refer to Fig. 2-11) NOTE Remove the Idler Ass'y. Do not touch the Pinch Roller. (Use gloves.) Remove the S Reel and T Reel Ass'y. When you install the Pinch Roller Ass'y, install as Remove the 2 Polyslider Washers 1.
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DISASSEMBLY INSTRUCTIONS 2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y (Refer to Fig. 2-15) Middle Gear Unlock the support 1 and remove the AHC Ass'y. E-Ring Remove the 3 screws 2. Remove the Cylinder Unit Ass'y. Main Cam NOTE Pinch Roller Cam When you install the Cylinder Unit Ass'y, tighten the screws from (1) to (3) in order while pulling the Ass'y Joint Gear Link Lever Spacer...
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DISASSEMBLY INSTRUCTIONS 2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A) 2-20: INCLINED S/T ASS'Y (Refer to Fig. 2-20) Remove the E-Ring 1 and remove the Main Loading Unlock the support 1 and remove the P4 Cover. Gear. Remove the S-S Brake Spring. Unlock the support 2 and remove the Loading Gear Remove the Capstan Brake Spring.
DISASSEMBLY INSTRUCTIONS 3. REMOVAL OF ANODE CAP 3. After one side is removed, pull in the opposite direction to remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.
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DISASSEMBLY INSTRUCTIONS 4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 3-5. Support Fig. 3-5 Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts. 4.
KEY TO ABBREVIATIONS Audio/Control H.SW Head Switch Automatic Color Control Hertz Audio Erase Integrated Circuit Automatic Frequency Control Intermediate Frequency Automatic Fine Tuning Indicator AFT DET Automatic Fine Tuning Detect Inverter Automatic Gain Control Killer Amplifier Left Antenna Light Emitting Diode A.PB Audio Playback LIMIT AMP...
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KEY TO ABBREVIATIONS SYNC Synchronization SYNC SEP Sync Separator, Separation Transistor TRAC Tracking TRICK PB Trick Playback Test Point UNREG Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse, Voltage Display V.PB Video Playback Variable Resistor V.REC Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source...
SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter SERVICE MODE, unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and remocon key simultaneously.
PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Unless maintenance is properly carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. Time 1,000 1,500...
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PREVENTIVE CHECKS AND SERVICE INTERVALS CLEANING NOTE 2. TAPE RUNNING SYSTEM After cleaning the heads with isopropyl alcohol, do not When cleaning the tape transport system, use the run a tape until the heads dry completely. If the heads gauze moistened with isopropyl alcohol. are not completely dry and alcohol gets on the tape, 3.
NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE: Initial Data setting will not be possible if clock has been set.
PREPARATION FOR SERVICING How to use the Servicing Fixture Unplug the connector CP351, CP757, CP302 and CP403, then remove the TV/VCR Block from the set. Unplug the connector CP810, CP820 and CP850, then remove the Main PCB from the VCR Block. Connect as shown in the below figure using the Service Fixture.
MECHANICAL ADJUSTMENTS 1. CONFIRMATION AND ADJUSTMENT 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION Read the following NOTES before starting work. Set to the PLAY mode. • Place an object which weighs between 450g~500g on Adjust the Tension Adjust until the edge of the Tension the Cassette Tape to keep it steady when you want to Arm is positioning within 0.5mm range from the make the tape run without the Cassette Holder.
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MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE 2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM Operate within 4~5 seconds after the reel disk begins to turn. Tape Running Mechanism is adjusted precisely at the Install the Torque Gauge (JG002F) and Adapter (JG002B) factory.
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MECHANICAL ADJUSTMENTS 2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ 2-3: TAPE RUNNING ADJUSTMENT CONTROL HEAD (X VALUE ADJUSTMENT) When the Tape Running Mechanism does not work well, Confirm and adjust the height of the Reel Disk. adjust the following items. (Refer to item 1-1) Confirm and adjust the position of the Tension Post.
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MECHANICAL ADJUSTMENTS 3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 1. Tension Adjust P4 Post 2. Tension Arm T Brake Spring 3. Guide Roller T Reel Ass'y 4. P1 Post Idler Ass'y 5. Audio/Control Head S-S Brake Spring 6. X value adjustment driver hole S Reel D1-4...
ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE Read and perform these adjustments when repairing the CH-2 circuits or replacing electrical parts or PCB assemblies. CAUTION When replacing IC's or transistors, use only specified 6.5H silicon grease (YG6260M). (To prevent the damage to IC's and transistors.) CH-1 Fig.
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ELECTRICAL ADJUSTMENTS 2-6: CUT OFF 2-9: SUB BRIGHTNESS Receive the monoscope pattern. (RF Input) Place the set with Aging Test for more than 15 minutes. Set condition is AV MODE without signal. Using the remote control, set the brightness and Using the remote control, set the brightness and contrast to normal position.
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ELECTRICAL ADJUSTMENTS 2-11: HORIZONTAL PHASE 2-15: OSD HORIZONTAL Receive monoscope pattern. Receive the monoscope pattern. Using the remote control, set the brightness and Using the remote control, set the brightness and contrast to normal position. contrast to normal position. Activate the adjustment mode display of Fig. 1-1 and Activate the adjustment mode display of Fig.
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ELECTRICAL ADJUSTMENTS 4-3: STATIC CONVERGENCE 4. PURITY AND CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 4-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.
Y/C/AUDIO/HEAD AMP/21PIN/IN/OUT BLOCK DIAGRAM Y/C/AUDIO/CCD/HEAD AMP IC IC4001 HA118217F CP4001 SP-CH1 (R) MODE SP_COM CONT X TAL VCO/OSD NTSC/PAL CR DET 2FSC C CCD N-P CONT SP-CH2 (L) 2FSCVCO CLOCK DRIVER LEVEL DET1 6DB AMP C SQUELCH Y_CCD MUTE CLPH Y.
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MICON/POWER/OPERATION/DECK BLOCK DIAGRAM SW1001 SYSCON/TIMER/SERVO IC IC1006 OEC0076A TAB SW SYSTEM RESET IC 3 OUT IC1002 RESET RE5VS31A AT + 5.6V MS SEN-A POWER FAIL POWER_FAIL (DC) P. CON + 5V MS_SEN A OSD IC Q1009 IC1003 LC74772V Q1015 MS SEN-B VSYNC VD SW OSD_CLK...
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T' TEXT BLOCK DIAGRAM Y/C_VIDEO Q863 D860 V. REF 21_B P. CON + 5V D858 Y/C/AUDIO/ HEAD AMP/ 21_R 21PIN/IN/OUT D855 21_G D852 D857 21_Y D859 D856 TRIPLE ANALOG MPXER IC IC853 TC74HC4053AP DECODER IC IC851 ET106 Q855 BUFFER VIDEO DATA SLICER IC Q852 IC852...
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SOUND AMP SCHEMATIC DIAGRAM (SYSCON PCB) CP302 CD302 FROM/TO 21PIN/IN/OUT B2B-EH-A CH12418A SPEAKER SP_OUT SP_OUT SOUND+ SOUND_GND SOUND_GND_A SP351 811-08-194 FROM MICON R353 TV_POWER_H R355 TV_A_MUTE FROM CHROMA/IF SOUND+B W829 SOUND_GND W830 AUDIO_OUT S805X S805Y C355 R351 PCB010 VM9155 NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE: THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE...
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T’TEXT SCHEMATIC DIAGRAM (SYSCON PCB) FROM Y/C/AUDIO/HEAD AMP Y/C_VIDEO R855 FROM MICON TEXT_RESET W890 TO CHROMA/IF SYNC L851 V.REF 100uH Q863 2SC2412K R861 D855 1SS133 FROM POWER R869 SYNC BUFFER D858 C857 P.CON+5V W844 Q853 1SS133 R866 2SC2412K W921 D857 DECODER IC W850 IC851...
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TV POWER SCHEMATIC DIAGRAM CAUTION: DIGITAL TRANSISTOR CAUTION: DIGITAL TRANSISTOR D522 (MAIN PCB) MTZJ16B RY503 ALKS329 12.0 DC POWER SW. PROTECTOR 12.0 DRIVER 11.3 Q514 Q504 DTC114ES DC JACK DTA114ES J503 12.0 DC POWER CONTROL HEC0824-010010 Q510 11.3 FROM/TO DEFLECTION DTC114ES TV.POWER_H DC POWER SW.
WAVEFORMS TV POWER 1 5V 0.1ms/div 7 20V 20µs/div 12 PB 10mV 5ms/div DEFLECTION DEFLECTION 3 0.5V 10ms/div 8 10V 10ms/div 13 POWER ON 200mV 50ns/div TV POWER 4 200mV 50µs/div 9 20V 10ms/div 14 POWER ON 0.5V 10µs/div 5 2V 20µs/div 10 1V 10µs/div 15 POWER ON 2V 20µs/div...
WAVEFORMS 17 POWER ON 22 POWER ON 27 PB 50mV 1ms/div 1V 20µs/div 1V 0.5µs/div 18 POWER ON 23 POWER ON 28 PB 1V 1ms/div 2V 20µs/div 0.5V 10µs/div 19 REC 24 POWER ON 29 PB 10V 5µs/div 2V 5ms/div 2V 20µs/div 20 REC 25 PB...
WAVEFORMS 32 POWER ON 37 POWER ON 42 POWER ON 20mV 1ms/div 0.5V 20µs/div 200mV 10µs/div CHROMA/IF 44 POWER ON 33 POWER ON 38 POWER ON 0.5V 10µs/div 5mV 1ms/div 0.5V 10ms/div 45 POWER ON 34 POWER ON 39 POWER ON 200mV 1ms/div 5mV 1ms/div 200mV 50µs/div...
CHASSIS EXPLODED VIEW (TOP VIEW) M2003 UN4001 H5001 H5002 D1100 M101 PCB550 (DECK PCB ASS'Y) NOTE: Applying positions AA, AB, AC, AD and BA for CLASS PART NO. MARK the grease or oil are displayed for this section. GREASE G-555G Check if the correct grease or oil is applied for G-488M each position.
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CHASSIS EXPLODED VIEW (BOTTOM VIEW) M2001 NOTE: Applying positions AA, AB, AC, AD and BA for CLASS PART NO. MARK the grease or oil are displayed for this section. Check if the correct grease or oil is applied for GREASE G-555G each position.
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