Toshiba VTV1400, Service Manual

Page 1: ...SERVICE MANUAL COLOR TELEVISION VIDEO CASSETTE RECORDER FILE NO 140 200220 VTV1400 ...

Page 2: ...s or whether there are the portions which are deteriorated around the serviced places serviced or not Check the insulation between the antenna terminal or external metal and the AC cord plug blades And be sure the safety of that INSULATION CHECK PROCEDURE 1 2 3 4 Unplug the plug from the AC outlet Remove the antenna terminal on TV and turn on the TV Insulation resistance between the cord plug term...

Page 3: ...TV Y C AUDIO HEAD AMP 21PIN IN OUT MICON PRINTED CIRCUIT BOARDS SYSCON CRT POWER SW POWER SCHEMATIC DIAGRAMS Y C AUDIO HEAD AMP MICON POWER 21PIN IN OUT CHROMA IF SOUND AMP T TEXT DEFLECTION CRT TV POWER INTERCONNECTION DIAGRAM WAVEFORMS MECHANICAL EXPLODED VIEWS CHASSIS EXPLODED VIEWS MECHANICAL REPLACEMENT PARTS LIST CHASSIS REPLACEMENT PARTS LIST ELECTRICAL REPLACEMENT PARTS LIST A1 1 A1 1 A2 1...

Page 4: ... 1Tuner Receive CH Destination U K Tuning System F Synth Input Impedance VHF UHF 75 ohm CH Coverage 21 69 Intermediate Picture FP 39 5MHz Frequency Sound FS 33 5MHz FP FS 6 0MHZ Preset CH 80CH Stereo Dual TV Sound No G 4 Signal Video Signal Input Level 1 V p p 75 ohm Output Level 1 V p p 75 ohm S N Ratio Weighted 53 dB Horizontal Resolution at SP Mode 240 Lines Audio Signal Input Level 3 8dBm 50Ko...

Page 5: ...s Tape Speed Yes Sleep Time Yes Control Volume Yes Level Bright Contrast Sharpness Color Yes Tint No Bass Treble Balance No Manual Tracking Yes Play Stop FF Rew Rec OTR T Rec Pause Eject Tape In Symbol Mark Yes Auto Tracking Manual Tracking Yes S Repeat SR R SR PLAY No Index Yes Mute Yes Hi Fi No Repeat Yes PDC Yes Zero Return No Dew No G 10 OSD Language English G 11 Clock Timer Calendar 1990 1 1 ...

Page 6: ...e Down Yes Play Up Yes Play Up Slow No F Fwd Right Yes Rew Left Yes Pause Still Yes Pause No Stop Down Yes Rec OTR Yes 2Keys Eject Yes Counter Reset Yes Speed Yes Timer Rec Yes 2Keys TV Monitor Yes TV Monitor Rec Monitor No Program Yes Program V No Auto Tracking Yes Auto Tracking Reveal No Menu Yes Enter Yes Enter Hold No Cancel Ch Skip Yes Cancel Ch Skip F T B No Index Yes Index Sub Page Time Tex...

Page 7: ...es Power On Memory No Protect of FBT Leak Circuit Yes Choke Coil No G 14 Accessories Owner s Manual Language Eng w Guarantee Card No Remote Control Unit Yes Rod Antenna No Poles Terminal w 300 ohm to 75 ohm Antenna Adapter Loop Antenna Yes Terminal DIN Type U V Mixer No DC Car Cord Center No Guarantee Card No Warning Sheet No Circuit Diagram No Antenna Change Plug No Service Facility List No Impor...

Page 8: ... Input No Audio Input No Video Output No Audio Output No Euro Scart 1 SCART Diversity No Ext Speaker No DC Jack 12V Center No VHF UHF Antenna Input DIN type AC Inlet No G 16 Set Size Approx W x D x H mm 362 x 369 x 382 G 17 Weight Net Approx 11 0 kg lbs Gross Approx 12 5 kg lbs G 18 Carton Master Carton No Content Material Dimensions W x D x H mm Description of Origin Gift Box Yes Material Double ...

Page 9: ...HE AC SOURCE 1 2 3 Fig 1 2 1 3 TV VCR BLOCK Refer to Fig 1 3 1 2 3 4 Remove the 2 screws 1 Disconnect the following connectors CP302 CP402 CP501 and CP502 Unlock the support 2 Remove the TV VCR Block in the direction of arrow Fig 1 3 1 4 POWER PCB Refer to Fig 1 4 1 2 3 Remove the 3 screws 1 Disconnect the following connectors CP401A and CP851A Remove the Power PCB in the direction of arrow Power ...

Page 10: ...K SHIELD PLATE Refer to Fig 1 5 1 2 3 4 Remove the 2 screws 1 Remove the Deck Shield Plate in the direction of arrow A Remove the screw 2 Remove the Bottom Shield Plate in the direction of arrow B Syscon PCB Deck Holder Fig 1 7 2 2 1 1 2 3 Remove the screw 1 Remove the 2 screws 2 Remove the Syscon PCB in the direction of arrow 1 7 JACK PLATE AND SYSCON PCB Refer to Fig 1 7 2 2 1 Deck Chassis Sysco...

Page 11: ...cker R 1 2 3 Link Unit NOTE 1 2 In case of the Locker R installation check if the two positions of Fig 2 3 B are correctly locked When you install the Cassette Side R be sure to move the Locker R after installing 2 4 LINK UNIT Refer to Fig 2 4 Set the Link Unit to the Eject position Unlock the support 1 Remove the A side of the Link Unit first then remove the B side 1 2 3 Fig 2 4 2 5 LINK LEVER FL...

Page 12: ...is correct In case of the Loading Motor installation hook the wire on the Cassette Opener as shown Fig 2 6 C When installing the wires between Capstan DD Unit and Loading Motor connect them correctly as shown Fig 2 6 D Loading Motor Capstan DD Unit L2 L1 Pink Fig 2 6 D White Fig 2 7 A Tension Arm Ass y Fig 2 7 B Fig 2 7 D Tension Band Tension Spring 1 2 4 Tension Band Tension Arm Ass y 3 1 Tension...

Page 13: ...se gloves Refer to Fig 2 9 A Do not adhere the stains on it When you install the reel clean the shaft and grease it If you do not grease noise may be heard in FF REW mode After installing the reel adjust the height of the reel Refer to MECHANICAL ADJUSTMENT 1 2 3 4 5 6 Fig 2 9 A S Reel 1 A T Reel A 1 Idler Arm Ass y Idler Gear NOTE 1 2 In case of the S Reel and T Reel installation check if the cor...

Page 14: ...the screw 3 1 2 3 2 10 CASSETTE OPENER PINCH ROLLER BLOCK P5 ARM ASS Y Refer to Fig 2 10 A Unlock the support 1 and remove the Cassette Opener Remove the Pinch Roller Block and P5 Arm Ass y 1 2 Fig 2 10 A 1 Cassette Opener P5 Arm Ass y Pinch Roller Block Main Chassis NOTE Do not touch the Pinch Roller Use gloves In case of the Pinch Roller Block and the Pinch Roller Cam installation install correc...

Page 15: ...he Main Loading Gear Remove the Main Rod Tension Lever Loading Arm S Unit and Loading Arm T Unit 1 Main Rod Main Loading Gear Tension Lever Loading Arm T Unit Loading Arm S Unit Fig 2 16 A 2 14 CAPSTAN DD UNIT Refer to Fig 2 14 A Remove the Capstan Belt Remove the 3 screws 1 Remove the Capstan DD Unit 1 2 3 Screw Torque 4 0 5kgf cm Capstan DD Unit Capstan Belt 1 1 1 In case of the Capstan DD Unit ...

Page 16: ...r Fig 2 18 B Fig 2 18 C Cassette Guide Post Cassette Guide Post 2 17 Remove the Polyslider Washer 1 Remove the Clutch Ass y and Ring Spring Remove the Clutch Lever Remove the Coupling Gear Coupling Spring and Clutch Gear 1 2 3 4 Fig 2 17 A NOTE 1 When you install the Loading Arm S Unit Loading Arm T Unit and Main Loading Gear align each marker Refer to Fig 2 16 B Fig 2 16 B Loading Arm T Unit Main...

Page 17: ...ip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 3 2 2 GND on the CRT Screwdriver Alligator Clip Support CRT GND on the CRT Rubber Cap CRT Support Fig 3 1 Fig 3 2 3 After one side is removed pull in the opposite direction to remove the other NOTE DISASSEMBLY INSTRUCTIONS INSTALLATION 1 Clean the spot where the cap was located with a sm...

Page 18: ...using a blower type IC desoldering machine Refer to Fig 4 2 2 Fig 4 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering the IC leads completely When IC starts moving back and forth easily after desoldering completely pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering...

Page 19: ...4 8 Thin tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So be always sure to replace the IC in this case Finally confirm the soldering status on four sides of the IC using a magnifying glass Confirm that no abnormality is found on the soldering position and insta...

Page 20: ...lop Frequency Generator Front Loading Switch Frequency Modulation Frequency Sub Carrier Forward Generator Ground High Pass Filter I K L M N O P R S H SW Hz IC IF IND INV KIL L LED LIMIT AMP LM LDM LP L P F LUMI M MAX MINI MIX MM MOD MPX MS SW NC NR OSC OPE PB PB CTL PB C PB Y PCB P CON PD PG P P R REC REC C REC Y REEL BRK REEL S REF REG REW REV RVS RF RMC RY S CLK S COM S DATA SEG SEL SENS SER SI ...

Page 21: ...tor Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse Voltage Display Video Playback Variable Resistor Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source Vertical Synchronization Voltage Tuning Crystal Luminance Chrominance C1 2 ...

Page 22: ...TIVE CHECKS AND SERVICE INTERVALS CONFIRMATION OF HOURS USED Can be checked of the INITIAL DATA of MEMORY IC Refer to the WHEN REPLACING EEPROM MEMORY IC VOL MIN 6 VOL MIN 9 Display of the Adjustment MENU on the screen Refer to the ELECTRICAL ADJUSTMENT On Screen Display Adjustment VOL MIN 8 Writing of EEPROM initial data NOTE Do not use this for the normal servicing VOL MIN 7 Releasing of PROTECT...

Page 23: ...e when rolling becomes abnormal Clean the Head Clean the rubber and parts which the rubber touches CONFIRMATION OF HOURS USED POWER ON total hours and PLAY REC total hours can be checked on the screen Total hours are displayed in 16 system of notation NOTE If you set a factory initialization the total hours is reset to 0 The confirmation of using hours will not be possible if clock has been set To...

Page 24: ... in the same manner Refer to the figure below 2 TAPE RUNNING SYSTEM When cleaning the tape transport system use the gauze moistened with isopropyl alcohol 3 CYLINDER Wrap a piece of chamois around your finger Dip it in isopropyl alcohol Hold it to the cylinder head softly Turn the cylinder head counterclockwise to clean it in the direction of the arrow Refer to the figure below NOTE Do not exert f...

Page 25: ...hed Press ENTER to select DATA When DATA is selected it will blink Again step through the DATA using PLAY or STOP button until required DATA value has been selected Pressing ENTER will take you back to ADDRESS for further selection if necessary Repeat steps 3 to 6 until all data has been checked When satisfied correct DATA has been entered turn POWER off return to STANDBY MODE to finish DATA input...

Page 26: ...154 APJG154000 Cable Used to connect the test point of SERVICE and GROUND APJG022000 JG022 Master Plane Reel Disk Height Adjustment JG024A APJG024A00 Reel Disk Height Adjustment Jig Reel Disk Height Adjustment JG153 APJG153000 X Value Adjustment Screwdriver X Value Adjustment Tentelometer PREPARATION FOR SERVICING 1 2 3 Unplug the connector CP302 then remove the Power PCB Syscon PCB from the set B...

Page 27: ...es 20 2gf in the beginning of playback 1 2 USING A CASSETTE TYPE TORQUE TAPE KT 300NR 1 2 3 After confirmation and adjustment of Tension Post position Refer to item 1 2 load the cassette type torque tape KT 300NR and set to the PLAY mode Confirm that the right meter of the torque tape indicates 50 90gf cm during playback in SP mode Confirm that the left meter of the torque tape indicates 25 40gf c...

Page 28: ...if you press the Tracking Button to move the envelope The envelope waveform will begin to decrease when you press the Tracking Button Adjust the PG shifter during playback Refer to the ELECTRICAL ADJUSTMENTS 1 2 3 4 5 6 7 NOTE Install the Torque Gauge on the reel disk firmly Press the REW button to turn the reel disk 1 5 CONFIRMATION OF REEL BRAKE TORQUE S Reel Brake Refer to Fig 1 4 B Once set to...

Page 29: ... is appeared then adjust the a P4 Cap Fig 2 2 A Audio Control Head 1 3 2 Fig 2 2 B Audio Control Head Fig 2 2 C TAPE RUNNING ADJUSTMENT X VALUE ADJUSTMENT Confirm and adjust the height of the Reel Disk Refer to item 1 1 Confirm and adjust the position of the Tension Post Refer to item 1 2 Adjust the Guide Roller Refer to item 2 1 Confirm and adjust the Audio Control Head Refer to item 2 2 Connect ...

Page 30: ...USTMENT PARTS LOCATION GUIDE 5 6 7 8 9 10 1 2 3 4 1 Tension Connect 2 Tension Arm 3 Guide Roller 4 Audio Control Head 5 X value adjustment driver hole 6 7 8 9 10 P4 Post T Brake Spring T Reel S Reel Adjusting section for the Tension Arm position ...

Page 31: ...nect the oscillator 39 5MHz to TP601 Activate the adjustment mode display of Fig 1 1 and press the channel button 13 on the remote control to select VCO COARSE Press the VOL UP DOWN button on the remote control until the OK appear on the screen If the OK is not displayed select the side on the changed from to Press the CH UP button once to set to VCO FINE mode Press the VOL UP DOWN button on the r...

Page 32: ...R SCAN Quantity Receive a broadcast and check if the picture is normal Receive the monoscope pattern of NTSC Audio Video Input Press the AV button on the remote control to set to the AV mode Then perform the above adjustments 2 4 1 2 3 4 5 6 7 2 10 OSD HORIZONTAL 1 2 3 Using the remote control set the brightness and contrast to normal position Activate the adjustment mode display of Fig 1 1 and pr...

Page 33: ...tton on the remote control until the contrast step No becomes 24 Receive a broadcast and check if the picture is normal Press the AV button on the remote control to set to the AV mode Then perform the above adjustments 1 3 2 16 COLOR CENT 1 2 3 4 5 6 7 8 Receive the PAL color bar pattern RF Input Using the remote control set the brightness contrast and color to normal position Connect the oscillos...

Page 34: ... performing adjustments in section 3 1 1 2 3 4 5 Receive the green raster pattern from color bar generator Adjust the pair of purity magnets to center the color on the screen Adjust the pair of purity magnets so the color at the ends are equally wide Move the deflection yoke backward to neck side slowly and stop it at the position when the whole screen is green Confirm red and blue color Adjust th...

Page 35: ... TP4001 TP4002 VR402 CP603 VR401 CP853A FB401 CP852A A C HEAD CP852B CP853B J801 CP402 CRT PCB SYSCON PCB CD852 CD853 CP401B CP851B CRT CP302 S801 TP803 R810 C1003 CP4005 CD302 SPEAKER TP501 T501 D510_1 CP401A VR502 CP851A L502 L501 CP501 CD502 POWER SW PCB POWER PCB L503 CP502 CRT AC IN SW501 TP1001 CP801 C D 8 0 1 CRT CD4005 ...

Page 36: ...MECHANICAL EXPLODED VIEW I1 1 202 202 122 202 202 202 212 212 212 212 126 PCB110 CRT PCB PCB340 POWER SW PCB 124 211 112 205 113 101 120 119 117 118 206 116 121 A ...

Page 37: ...3 125 204 204 204 203 203 209 203 210 210 PCB020 POWER PCB A 102 103 108 107 111 111 110 209 209 209 209 208 PCB010 SYSCON PCB 201 201 106 206 206 204 213 128 204 109 104 207 MECHANICAL EXPLODED VIEW I1 2 ...

Page 38: ...ase is applied for each position NOTE MARK CLASS GREASE AA 312 315 UN4001 M2003 502 504 H5001 503 306 305 332 507 335 342 322 508 324 302 506 501 H5002 323 508 341 331 334 333 314 301 313 307 300 317 309 336 346 345 321 319 320 AA 316 318 325 347 AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA I2 1 CD1501 M101 304 CD1502 ...

Page 39: ... 330 505 510 338 510 337 340 509 308 344 327 343 326 328 AA AA AA AA AA AA AA AA AA AA AA AA AA CD1501 CD1502 AA Applying positions AA for the grease are displayed for this section Check if the correct grease is applied for each position NOTE MARK CLASS GREASE AA I2 2 ...

Page 40: ...T BACK 123 BZ710507 752WSA0255 PLATE DECK SHIELD 124 BZ710509 735WPJA544 BUTTON POWER 125 BZ710039 8995034000 CORD CLIP UL CO 126 BZ710278 741WUA0024 SPRING EARTH 128 BZ710508 755WPA0026 PLATE COVER LIGHT 201 BZ710036 8117540B04 SCREW TAPPING B0 TRUSS 4x20 202 BZ710035 8117540A64 SCREW TAPPING B0 TRUSS 4x16 203 BZ710262 8117540A04 SCREW TAPPING B0 TRUSS 4x10 204 BZ710032 8110630A24 SCREW TAP TITE ...

Page 41: ...P400492 HOLDER TENSION 332 BZ710366 85OP400520 CAP P4 333 BZ710539 85OP400539 BAND TENSION 334 BZ710540 85OP400533 CONNECT TENSION 335 BZ710541 85OP600573 ARM BRAKE T 336 BZ710542 85OP600583 BAND BRAKE T 337 BZ710543 85OP600577 CAM PINCH ROLLER 338 BZ710544 85OP600578 CAM MAIN 339 BZ710545 85OP600579 ROD MAIN 340 BZ710546 85OP600582 GEAR JOINT 341 BZ710110 85OP800322 SPRING TENSION 342 BZ710547 85...

Page 42: ... UF 16V C535 BZ110178 C03L0R7B3K CC 0 0012UF 2KV R C801 BZ110141 C0HHB07H3K CC 0 0022UF 2KV B or BZ110184 C0PWB07H3K CC 0 0022UF 2KV B C1003 BZ110170 E51A0P104Z CE 0 1 F 5 5V C1061 BZ110254 CQG0B0415K CC 0 1 UF 50V B or BZ110254 CQGTB0415K CC 0 1 UF 50V B DIODES D403 BZ410043 D2WT011E10 DIODE SILICON 11E1 EIC D404 BZ410043 D2WT011E10 DIODE SILICON 11E1 EIC D405 BZ410043 D2WT011E10 DIODE SILICON 11...

Page 43: ... SILICON 2SC2412KT146 R S Q401 BZ510004 TA3T016240 TRANSISTOR SILICON 2SA1624 AA Q403 BZ510002 T8YJ2412K0 TRANSISTOR SILICON 2SC2412KT146 R S Q405 BZ510089 TC5T01627Y TRANSISTOR SILICON 2SC1627_Y TPE2 Q406 BZ510036 TD30026270 TRANSISTOR SILICON 2SD2627LS CBC11 Q501 BZ510023 TNYTB03001 COMPOUND TRANSISTOR DTC114ESTP Q507 BZ510069 TCATC31980 TRANSISTOR SILICON KTC3198 AT Y GR Q601 BZ510090 TPAAB0500...

Page 44: ...1LA6100K COIL 10 UH L4026 BZ310052 021LA6100K COIL 10 UH L4202 BZ310002 021673101K COIL 100 UH L4203 BZ310052 021LA6100K COIL 10 UH L4204 BZ310052 021LA6100K COIL 10 UH T401 BZ310157 045009003J TRANS HORIZONTAL DRIVE ETH09K14BZ T501 BZ310158 0481290794 TRANSFORMER SWITCHING 81290794 JACKS J801 BZ614004 066X120014 SOCKET CATHODE RAY TUBE HPS3200 010501 J2201 BZ614144 0602131011 HEADPHONE JACK HSJ20...

Page 45: ...E 06JQ ST CP801 BZ614269 069S320010 CONNECTOR PCB SIDE A2361WV2 2P CD4005 BZ614108 122S061401 CORD JUMPER 1 25X6X138XC CP1001 BZ614289 06972C0010 CONNECTOR PCB SIDE TMC J12P B2 CP4001 BZ614054 0697240600 CONNECTOR PCB SIDE TOC C04X B1 CP4004 BZ614009 0697120320 CONNECTOR PCB SIDE TMC T02X E1 CP4005 BZ614050 069J760029 CONNECTOR PCB SIDE IMSA 9604S 06Z14 CP401A BZ614331 069S250629 CONNECTOR PCB SID...

Page 46: ...RBON RESISTOR CAPACITORS CC CERAMIC CAPACITOR CE ALUMI ELECTROLYTIC CAPACITOR CP POLYESTER CAPACITOR CPP POLYPROPYLENE CAPACITOR CPL PLASTIC CAPACITOR CMP METAL POLYESTER CAPACITOR CMPL METAL PLASTIC CAPACITOR CMPP METAL POLYPROPYLENE CAPACITOR J3 5 ...

Page 47: ...TOSHIBA VIDEO PRODUCTS PTE LTD 438B ALEXANDRA ROAD BLOCK B 06 01 ALEXANDRA TECHNOPARK SINGAPORE 119968 ...