Magnavox CT270MW8 A User Manual Download

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SERVICE MANUAL

Main Section

Specifications

Preparation for Servicing

Adjustment Procedures

Schematic Diagrams

CBA’s

Exploded Views

Parts List

When servicing the deck
mechanism, refer to MK14 Deck
Mechanism Section.

Deck Mechanism Part No.:
N2466FT

″

ANALOG/DIGITAL

PURE FLAT COLOR TV/DVD/VCR

CT270MW8

Summary of Contents for CT270MW8 A

Page 1: ...ion for Servicing I Adjustment Procedures I Schematic Diagrams I CBA s I Exploded Views I Parts List When servicing the deck mechanism refer to MK14 Deck Mechanism Section Deck Mechanism Part No N2466FT 27 ANALOG DIGITAL PURE FLAT COLOR TV DVD VCR CT270MW8 ...

Page 2: ...mproper service methods may damage the equipment It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE Funai could not possibly know evaluate and advice the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way Consequently Funai has not undertaken any such broad evaluation Accordingly a servicer w...

Page 3: ...ructions 1 7 1 How to Initialize the TV DVD VCR 1 8 1 Firmware Renewal Mode 1 9 1 Block Diagrams 1 10 1 Schematic Diagrams CBA s and Test Points 1 11 1 Waveforms 1 12 1 Wiring Diagram 1 13 1 System Control Timing Charts 1 14 1 IC Pin Function Descriptions 1 15 1 Lead Identifications 1 16 1 Exploded Views 1 17 1 Mechanical Parts List 1 18 1 Electrical Parts List 1 19 1 Main Section I Specifications...

Page 4: ... m 0 2 5 Side m m 0 1 5 2 Tint Control Range deg 30 23 23 3 Contrast Control Range dB 6 2 4 Brightness 100 White Full Field Contrast Max ft L 25 15 5 Color Temperature K 9200 Description Condition Unit Nominal Limit 1 Horizontal Resolution TDV 540 TIT 2 CHP 16 Line 350 330 2 Video S N at CN3400 TDV 540 TIT 2 CHP 6 dB 60 55 3 S N Chroma at CN3400 TDV 540 TIT 2 CHP 17 AM dB 58 53 PM dB 58 53 4 Audio...

Page 5: ...tion Unit Nominal Limit 1 Video S N 80 dBµV TV4ch dB 45 40 2 Audio S N W LPF dB 45 40 Description Condition Unit Nominal Limit 1 Audio Output Power R P SP W 1 0 0 8 2 Audio S N W LPF R P SP dB 40 36 3 Audio distortion W LPF 10 dB 1 kHz IN R P SP 3 0 5 0 4 Audio Freq Response 10dB 1kHz IN 200 Hz R P SP dB 2 0 2 0 5 0 8 kHz R P SP dB 0 0 6 0 Description Condition Unit Nominal Limit 1 Output Level 10...

Page 6: ...nit Nominal Limit 1 RECEIVED FREQ RANGE 28dBm kHz 150 100 kHz 150 100 2 ATSC DYNAMIC RANGE min max VHF LOW BAND CH 4 VHF HI BAND CH 10 UHF BAND CH 41 dBµV dBµV dBµV 26 114 26 114 28 118 32 108 32 108 34 112 3 ATSC SUSCEPTIBILITY TO RANDOM NOISE VHF LOW BAND CH 4 VHF HI BAND CH 10 UHF BAND CH 41 dB dB dB 20 20 20 26 26 26 4 NTSC CO CHANNEL INTERFERENCE VHF LOW BAND CH 4 VHF HI BAND CH 10 UHF BAND C...

Page 7: ...hen the diode is turned on Do not look directly at the laser beam CAUTION Use of controls and adjustments or doing procedures other than those specified herein may result in hazardous radiation exposure Location Top of DVD mechanism Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin Drive Mechanism Assembly Laser Beam Radiation Laser Pickup Turnta...

Page 8: ... the instrument AC switch in the on position Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal screw and if applicable to the coaxial connector If the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrument is ret...

Page 9: ...nected directly to one conductor of the AC power cord and maybe safety serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source To confirm that the AC power plug is inserted correctly with an AC voltmeter measure between the chassis and a known earth ground If a voltage reading in excess of 1 0V is ob...

Page 10: ...eat sinks oxide metal film resistors fusible resistors etc G Check that replaced wires do not contact sharp edged or pointed parts H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it I Also check areas surrounding repaired locations J Be careful that foreign objects screws solder droplets etc do not remain inside the set K Crimp type wire connector ...

Page 11: ...er cord plug prongs and externally exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc Measuring Method Power ON Insert load Z between B earth ground power cord plug prongs and exposed accessible parts Use an AC voltmeter to measure across both terminals of load Z See Fig 2 and following table Table 2 Leakage curren...

Page 12: ...al With Hot Air Flat Pack IC Desoldering Machine 1 Prepare the hot air flat pack IC desoldering machine then apply hot air to the Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while applying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat ...

Page 13: ...lead of the flat pack IC upward one by one using a sharp pin or wire to which solder will not adhere iron wire When heating the pins use a fine tip soldering iron or a hot air desoldering machine Fig S 1 4 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted ...

Page 14: ...ers Fig S 1 6 Note When using a soldering iron care must be taken to ensure that the flat pack IC is not being held by glue When the flat pack IC is removed from the CBA handle it gently because it may be damaged if force is applied 2 Installation 1 Using desoldering braid remove the solder from the foil of each pin of the flat pack IC on the CBA so you can install a replacement flat pack IC more ...

Page 15: ...ded to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 MΩ on the workbench or other surface where the semi conductors are to be placed Because the static electricity charge on clothing will not escape through the body grounding band be careful to avoid contacting semi conductors with yo...

Page 16: ...eparing 2 1 To eject the tape press the STOP EJECT button on the unit or remote control 2 When you want to record during Service mode press the REC button while depressing SW1211 REC SAFETY SW on the Main CBA Key Adjustment Mode PICTURE Picture adjustment mode in TV mode or DTV mode Press the PICTURE button to change from BRT Bright CNT Contrast COL Color TNT Tint V T V Tint and SHP Sharpness Pres...

Page 17: ...r desoldered P Spring L Locking Tab S Screw CN Connector Unhook Unlock Release Unplug or Desolder e g 2 S 2 two Screws S 2 2 L 2 two Locking Tabs L 2 5 Refer to the following Reference Notes in the Table Step Loc No Part Removal Fig No Remove Unhook Unlock Release Unplug Unclamp Desolder Note 1 Rear Cabinet D1 7 S 1 S 2 S 3A S 3B 2 Tray Chassis Unit D2 D3 D5 Anode Cap CN2501 CRT CBA CN1601 CN3802 ...

Page 18: ...d on cloth human body etc during unpacking or repair work To avoid damage of pickup follow next procedures 1 Disconnect Connector CN301 on the DVD Main CBA Unit 2 Short the three short lands of FPC cable with solder before removing the FFC cable CN201 from it If you disconnect the FFC cable CN201 the laser diode of pickup will be destroyed Fig D4 3 Remove DVD Mechanism 3 CAUTION 3 When reassemblin...

Page 19: ...D Main CBA Unit 4 DVD Mechanism 2 Tray Chassis Unit S 8 S 8 Top Shield S 9 S 9 S 9 8 Deck Assembly S 11 S 10 S 13 S 13 S 12 S 12 9 Main CBA 10 Digital CBA Unit S 5 S 5 S 6 S 6 S 7 S 6 6 Sub CBA 7 Function CBA Fig D2 S 6 ...

Page 20: ...1 6 4 T3200DC 3 CRT Anode Cap CRT CBA S 4 S 4 S 4 S 4 Fig D3 A DVD Mechanism Fig D4 View for A Short the three short lands by soldering Either of two places FPC Cable ...

Page 21: ...Fig D5 CN201 CN301 CN2 CN1 CN2A CN1A CN2501 CN1104 CN1102 CN1101 CN1103 CN2103 CN101 CN102 DIGITAL CBA UNIT ANODE CRT GND DVD MAIN CBA UNIT FE HEAD CYLINDER ASSEMBLY ACE HEAD ASSEMBLY CAPSTAN MOTOR DECK ASSEMBLY TUNER MAIN CBA SUB CBA CRT CBA TO SPEAKER TO SPEAKER CL2504B SCREEN CL2501B FOCUS CN1802 CL1201 CN1302 CN1301 CL1402 CN1601 CL1401 CL1403 CL2501A CN2571 CN2302 CL2504A CN2301 CN2401 CN2801...

Page 22: ...nd 17 of the microprocessor with a jumper wire How to enter Service mode Service mode 1 Use the service remote control unit 2 Turn the power on Use main power on the TV unit 3 To change TV mode DTV mode or DVD mode press SELECT button on the TV unit 4 Press DISC MENU button on the service remote control unit Version of micro computer will display on the CRT Ex BA4 0 16 X Ray Protection Test X Ray ...

Page 23: ... YC CONTRAST YC CNT 1 Press 2 button to selcet YC CONTRAST YC CNT display 2 Press CH o p buttons so that the value of YC CONTRAST YC CNT becomes 85 YC COLOR YC COL 1 Press 2 button to select YC COLOR YC COL display 2 Press CH o p buttons so that the value of YC COLOR YC COL becomes 58 YC TINT YC TNT 1 Press 2 button to select YC TINT YC TNT display 2 Press CH o p buttons so that the value of YC TI...

Page 24: ...position and size of screen image Symptom of Misadjustment Horizontal position and size of screen image may not be properly displayed Note R2583 Sub CBA 1 Connect frequency counter to R2583 2 Operate the unit for at least 20 minutes 3 Enter Service mode 4 Press 2 button on the remote control unit and select H ADJ mode 5 Press CH o p buttons on the remote control unit so that the display will chang...

Page 25: ... CUT OFF B COB Then press CH o p buttons until the horizontal line becomes white 6 H Size Adjustment Purpose To obtain correct size of screen image Symptom of Misadjustment Size of screen image may not be properly displayed Note VR2531 Sub CBA 1 Input monoscope pattern 2 Adjust VR2531 so that the monoscope pattern is 90 5 of display size and the circle is round 7 H Pincushion Adjustment Purpose To...

Page 26: ...86 y 294 3 Note Confirm that Cut Off Adj is correct after this adjustment and attempt Cut Off Adj if needed 9 Sub Brightness Adjustment Purpose To get proper brightness Symptom of Misadjustment If Sub Brightness is incorrect proper brightness cannot be obtained by adjusting the Brightness Control Note SMPTE Setup level 7 5 IRE 1 Enter Service mode Then input SMPTE signal from RF input 2 Press PICT...

Page 27: ...ange to V P and V S 2 Input monoscope pattern 3 Press CH o p buttons on the remote control unit so that the top and bottom of the monoscope pattern are equal to each other 13 V Size Adjustment Purpose To obtain correct vertical height of screen image Symptom of Misadjustment If V Size is incorrect vertical height of image on the screen may not be properly displayed 1 Enter Service mode Press 9 but...

Page 28: ...only when replacing the CRT then adjust as a preparation 15 Purity Adjustment Purpose To obtain pure color Symptom of Misadjustment If Color Purity Adjustment is incorrect large areas of color may not be properly displayed This becomes RED COLOR if the 7 button is pressed while in service mode 1 Set the unit facing east 2 Operate the unit for over 30 minutes before adjusting 3 Fully degauss the un...

Page 29: ...s at the center of the screen by rotating RB G C P Magnet See Fig 8 4 Fix the C P Magnets by tightening the Ring Lock 5 Remove the DY Wedges and slightly tilt the Deflection Yoke horizontally and vertically to obtain the best overall convergence 6 Fix the Deflection Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke Test Point Adj Point Mode Input C P Magnet RB C P Magnet RB...

Page 30: ... four corners on TV screen changes from on and off light indication to red by pressing DISPLAY button It is necessary for one or two seconds 6 Press POWER button to release from Service mode DTV Section 1 Use the service remote control unit 2 Turn the power on and press SELECT button to select DTV mode Use main power on the TV unit 3 Press DISC MENU button on the service remote control unit to ent...

Page 31: ...rol unit to go to TV mode or press POWER button on the unit to turn the power off 8 Press SELECT button on the remote control unit to put the TV DVD VCR into DVD mode again 9 Press 1 2 3 4 and DISPLAY buttons on the remote control unit in that order Fig d appears on the screen 10 Press CLEAR button on the remote control unit Fig e appears on the screen When OK appears on the screen the factory def...

Page 32: ... IN NORMAL H DVD MAIN POWER Hi Fi H SW 19 26 2 21 YCA SDA YCA CS DVD AUDIO MUTE 42 5 KEY SWITCH REMOTE SENSOR SW1201 SW1203 SW1206 SW1210 5 5 KEY1 CN2401 CN2301 CN1104 KEY SWITCH SW2401 SW2408 P ON H2 P ON H2 75 25 13 SDATA 13 18 SDATA TO DVD SYSTEM CONTROL SERVO BLOCK DIAGRAM DVD SECTION CN1A CN1 6 CN1301 14 SCLK 15 CS 1 CM 12V 5 C CONT 6 FG GND 7 LD CONT CAPSTAN MOTOR P ON 5V 3 DEF B M 12V 10 M ...

Page 33: ...O SIGNAL PB VIDEO SIGNAL MODE SP REC 57 32 30 QV QH 6dB AMP TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TO TV PROCESS BLOCK DIAGRAM CYLINDER ASSEMBLY RF SW RF SW 59 V ENV V H SW ENV DET ENV DET TP1402 X1401 3 58MHz VIDEO L 2 HEAD VIDEO R 2 HEAD TP1403 ENV BUFFER Q1404 BUFFER DV SYNC DV SYNC 53 24 YCA SCL VIDEO TU VIDEO EXT VIDEO 14 36 37 39 34 Q1402 BUFFER 58 60 SP EP 54 YCA SDA 55 YCA CS SERIAL I F VCA...

Page 34: ...BA SPEAKER L CH CN3801 SP801 SP R 1 SP GND 2 SP L 1 SP GND 2 CL3801 DVD AUDIO MUTE SP MUTE 19 19 DVD AUDIO R 17 3 4 17 DVD AUDIO L TO Hi Fi AUDIO BLOCK DIAGRAM 16 9 1 16 DVD AUDIO MUTE 13 13 DTV SPDIF AUDIO OUT R AUDIO OUT L N A IN N A OUT JK2601 WF20 WF8 DTV SPDIF WF7 PB AUDIO SIGNAL DVD AUDIO SIGNAL REC AUDIO SIGNAL DIGITAL AUDIO OUT COXIAL TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TO DIGITAL TUNER ...

Page 35: ...9 26 24 27 N A OUT LIM 49 AUDIO OUT L AUDIO OUT R N A IN Hi Fi H SW AUDIO MUTE NORMAL H 40 ST SAP IN TO AUDIO BLOCK DIAGRAM SCL P ON 9V Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD CYLINDER ASSEMBLY MAIN CBA CL1401 IC1701 MTS SAP Hi Fi AUDIO PROCESS Hi Fi HEAD AMP 9 71 PILOT CANCEL TO AUDIO BLOCK DIAGRAM 62 63 JK1702 AUDIO L IN JK1703 AUDIO R IN SIF TO TV PROCESS BLOCK DIAGRAM Q1701 SDA TP1703 A OUT YCA ...

Page 36: ...CIRCUIT OSD MIX RBG MATRIX BLIGHT DRIVE AMP HV BLANKING TUNER TUNER FILTER TUNING VXCO CF1032 IC1001 IF SIGNAL PROCESS VIF AMP VIDEO DET VCO 4 5MHz FILTER SIF AMP AMP AFT EQ AMP 16 11 13 17 4 7 8 C SYNC SPOT KILL LINE DVD VCR VCR LINE DVD RED H DRIVE V DRIVE AFC V RAMP NF ACL CN2 CN1302 CN2302 CN2302 CN1302 CN2301 CN1301 CN2301 CN1301 DVD C 8 6 DVD Y 28 Q1403 BUFFER Q2301 BUFFER Q2302 BUFFER Q2303...

Page 37: ...AA12 Y12 W13 W4 Y3 AA3 AA16 Y17 AA18 AA6 Y7 W7 AA5 W9 AA8 V9 Y6 V11 W3 Y2 AA2 TO VIDEO BLOCK DIAGRAM BUFFER BUFFER BUFFER Q257 BUFFER Q256 BUFFER E1 E2 F1 G1 H1 H4 J1 J2 K1 K3 K4 L1 L2 28 32 35 42 DATA BUS D0 D15 IC202 FLASH MEMORY ADDRESS BUS A1 A22 L20 L21 M21 N20 N21 P19 P21 R19 R21 T19 T21 U20 U21 A18 A20 B18 B19 B21 C17 C21 D18 D21 E19 E20 F19 G20 G21 H19 H20 29 36 38 45 1 10 13 16 25 48 AA10...

Page 38: ...T GND FOCUS SCREEN JK2501 HEATER 1 1 CL2501B CL2501A CN2571 180V 3 3 11 S F HV FOCUS VR SCREEN VR CN2103 4 3 2 RED GREEN BLUE H OUTPUT 1 3 5 4 5 4 3 1 WF13 WF12 WF14 WF10 WF11 RED AMP TP2501 B TP2504 GND TP2506 AFC TO POWER SUPPLY BLOCK DIAGRAM CN1103 CL2504A 4 3 2 RED GREEN BLUE TO TV PROCESS BLOCK DIAGRAM TO TV PROCESS BLOCK DIAGRAM REC VIDEO SIGNAL PB VIDEO SIGNAL DVD VIDEO SIGNAL Mode SP REC B...

Page 39: ...3 13 EV 9V 12 12 DVD ON 5V 9 9 EV 3 3V 3 3 EV 1 2V 2 2 EV 1 2V 1 1 EV 1 2V 15 15 PWRCON DVD MAIN CBA UNIT EV 9V DVD ON 5V DVD ON 3 3V EV 3 3V EV 1 2V PWRCON CN1A TO DVD SYSTEM CONTROL SERVO BLOCK DIAGRAM DVD SECTION HOT CN1 2 2 DT 1 2V 6 6 DT 1 8V 4 4 DT 3 3V 5 5 DT 2 5V DT 1 2V DT 1 8V DT 3 3V DT 5V DT 2 5V DIGITAL CBA UNIT CN102 CN1102 3 3 DT 5V CN101 CN1101 SW 8V Q1689 SW 5V Q1688 SW 5V Q1681 S...

Page 40: ...S ACTUATOR DRIVE SPINDLE MOTOR DRIVE TRACKING ACTUATOR DRIVE 126 TRAY IN SLD 67 SPDL 66 TRACKING DRIVE 127 FOCUS DRIVE 65 TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM FS FS TS TS TRAY IN 6 SP 5 SP 1 TRAY IN 4 GND 3 SL 2 SL VREF TO SYSTEM CONTROL SERVO BLOCK DIAGRAM TV VCR SECTION CN1 15 16 14 13 12 11 17 18 23 6 4 5 3 1 2 25 24 27 26 63 SL AMP 121 SP ROT 3 3V 124 FD OFST 123 TD OFST SCLK PWRCON PWRCON ...

Page 41: ...GENERAL I O INTERRUPT CONTROLLER TIMER WATCH DOG TIMER REMOTE CONTROL 32BIT CPU STREAM I F EXTERNAL MEMORY I F SDRAM ECC UMAC 100 115 116 113 114 106 104 105 103 62 DEBUG BCU INST CACHE DATA CACHE 152 151 146 144 SDRAM ADDRESS 0 10 IC103 FLASH ROM FLASH ROM 29 36 38 45 DVD VIDEO SIGNAL FDQ 0 15 1 9 16 25 48 FADR 0 19 SDRAM DATA 0 15 PICK UP UNIT TO SYSTEM CONTROL SERVO BLOCK DIAGRAM DVD MAIN CBA U...

Page 42: ...k in the schematic diagram and the parts list Before replacing any of these components read the parts list in this manual carefully The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock fire or other hazards Notes 1 Do not use the part number shown on these drawings for ordering The correct part number is shown in t...

Page 43: ...nits use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Mode SP REC 5 Voltage indications for PLAY and REC modes on the schematics are as shown below 6 How to read converged lines 7 Test Point Information 2 3 1 5 0 2 5 PLAY mode STOP mode 5 0 The same voltage for both PLAY STOP modes Indicates that the voltage is not consi...

Page 44: ...1 11 3 Main 1 6 Sensor Schematic Diagram TV VCR Section T3251SCM1 ...

Page 45: ...1 11 4 T3251SCM2 Main 2 6 Schematic Diagram TV VCR Section ...

Page 46: ...1 11 5 T3251SCM3 Main 3 6 Schematic Diagram TV VCR Section ...

Page 47: ...1 11 6 Main 4 6 Schematic Diagram TV VCR Section T3251SCM4 ...

Page 48: ...1 11 7 T3251SCM5 Main 5 6 Junction A Schematic Diagram TV VCR Section ...

Page 49: ...uit is used in this unit If Main Fuse F1601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail VOLTAGE CHART Power off mode Ref No 1 4 IC1601 25 7 1 2 Ref No IC1682 Ref No Q1601 Ref No Q1221 Q1602 Q1604 Q1605 Q1606 Q1607 Q1609 Q1613 Q...

Page 50: ...1 11 9 T3251SCSUB1 Sub 1 3 Schematic Diagram TV VCR Section ...

Page 51: ...1 11 10 Sub 2 3 Schematic Diagram TV VCR Section T3251SCSUB2 ...

Page 52: ...1 11 11 Sub 3 3 Schematic Diagram TV VCR Section T3251SCSUB3 ...

Page 53: ...1 11 12 T3251SCCRT T3251SCF Function Junction B Schematic Diagram TV VCR Section CRT Schematic Diagram TV VCR Section ...

Page 54: ...101 1 2 IC101 2 2 in this Digital Schematic Diagram Section Digital 1 3 Schematic Diagram TV VCR Section CN101 1 0 2 2 0 3 5 4 4 4 1 5 4 1 6 0 7 1 1 8 0 9 0 10 0 11 0 12 0 13 0 14 4 0 15 4 0 CN102 1 2 1 3 3 0 4 3 4 5 2 6 6 1 9 7 8 0 9 0 2 10 0 11 0 12 0 13 0 14 0 15 2 4 16 3 0 17 0 18 0 7 19 0 2 20 0 6 VOLTAGE CHART Pin No Voltage Pin No Voltage ...

Page 55: ...1 11 14 T3251SCD2 Digital 2 3 Schematic Diagram TV VCR Section ...

Page 56: ... The order of pins shown in this diagram is different from that of actual IC101 IC101 is divided into two and shown as IC101 1 2 IC101 2 2 in this Digital Schematic Diagram Section Digital 3 3 Schematic Diagram TV VCR Section ...

Page 57: ...1 11 16 T3251SCDT1 DVD Main 1 3 Schematic Diagram DVD Section ...

Page 58: ...1 11 17 T3251SCDT2 DVD Main 2 3 Schematic Diagram DVD Section ...

Page 59: ...1 11 18 T3251SCDT3 DVD Main 3 3 Schematic Diagram DVD Section ...

Page 60: ...circuit a variable isolation transformer is required NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal For continued protection against risk of fire replace only with same type 4 A 125V fuse CAUTION ATTENTION Utiliser un fusible de rechange de même type de 4A 125V 4A 125V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this un...

Page 61: ...pe power supply circuit a variable isolation transformer is required NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal For continued protection against risk of fire replace only with same type 4 A 125V fuse CAUTION ATTENTION Utiliser un fusible de rechange de même type de 4A 125V 4A 125V CAUTION Fixed voltage or Auto voltage selectable power supply circuit is...

Page 62: ...1 11 21 R2583 H f0 Adjustment B TP2501 TP2504 GND H SIZE VR2531 PIN C VR2530 B OUT TP1301 Sub CBA Top View TV VCR Section BT3221F01023 A ...

Page 63: ...1 11 22 WF11 PIN 5 OF CN2571 Q2571 Collector WF10 H DRIVE TP2503 WF9 WF20 PIN 1 OF CN2 WF19 PIN 4 OF CN2 WF18 PIN 6 OF CN2 WF17 PIN 8 OF CN2 Sub CBA Bottom View TV VCR Section BT3221F01023 A ...

Page 64: ...1 11 23 WF13 Q2502 Collector WF12 Q2503 Collector WF14 Q2501 Collector CRT CBA Top View TV VCR Section CRT CBA Bottom View TV VCR Section BT3221F01023 B ...

Page 65: ...Function CBA Bottom View TV VCR Section Junction B CBA Top View TV VCR Section Junction B CBA Bottom View TV VCR Section Junction A CBA Top View TV VCR Section Junction A CBA Bottom View TV VCR Section BT3221F01023 C BT3221F01023 D BT3221F01023 E ...

Page 66: ...prox 70 1DIV 2V 5ms TP1402 RF SW 1DIV 0 2V 0 1µs IC1401 Pin 49 1DIV 1V 10ms TP1202 CTL AMP OUT 1DIV 0 25V 20 µs IC1401 Pin 32 1DIV 0 5V 20 µs TP1401 V OUT Upper WF6 Lower WF1 1DIV 0 2V 2DIV 5V 5ms TP1403 ENV TP1402 RF SW 1DIV 0 5V 0 5ms IC1401 PIN9 1DIV 0 5V 0 5ms IC1401 PIN10 1DIV 2V 20 µs TP2503 H DRIVE 1DIV 200V 20 µs Q2571 COLLECTOR 1DIV 10V 5ms CN2571 PIN 5 1DIV 20V 20µs Q2503 COLLECTOR 1DIV ...

Page 67: ...DIF 1V 0 1µsec 1DIV 0 2V 20µs CN2 PIN 8 1DIV 0 2V 20µs CN2 PIN 6 1DIV 0 5V 0 5ms CN2 PIN 4 1DIV 1V 0 1µs CN2 PIN 1 1DIV 1V 500ns WF21 GND GND GND GND GND GND 1DIV 1V 20ms 1DIV 1V 500µs 1DIV 1V 50µs 1DIV 1V 50µs WF22 WF23 WF24 GND WF26 WF25 WF29 GND GND WF27 WF28 Pin 2 of CN1101 Pin 7 of CN1101 Pin 15 of CN1102 1DIV 1V 50µs Pin 20 of CN1102 1DIV 1V 20ms Pin 8 of CN1101 Pin 18 of CN1102 Pin 19 of CN...

Page 68: ... 11 DVD REMOTE 12 12 P SAFETY3 13 13 SDATA 14 14 SCLK 15 15 CS 16 16 DVD AUDIO MUTE 17 17 DVD AUDIO L 18 18 P ON 8V 19 19 DVD AUDIO R CN1302 CN2302 1 1 5 7V CTRL 2 2 C SYNC 3 3 EXT VIDEO 4 4 GND 5 5 VIDEO 6 6 GND 9 9 DTV Y 7 7 C VIDEO 8 8 GND 10 10 DTV Cb 11 11 DTV Cr 12 12 GND 13 13 DTV SPDIF 14 14 GND 15 15 FSC 16 16 GND 17 17 TV VIDEO 18 18 GND 19 19 GND CN102 CN1102 1 1 NU 2 2 DTV 1 2V 3 3 GND...

Page 69: ...ND PWRCON EV 3 3V 8 15 9 10 11 12 CN1A PICK UP UNIT CN201 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 TS TS FS CD LD FS GND DVD PD GND CD PD PD MONI DVD LD VREF NU GND B P ON 5V CD DVD D A C NU GND LD DETECTOR FS TS 7 9 11 2 3 6 5 4 TO CN2 SPDIF GND DVD AUDIO R DVD AUDIO L GND 1 2 3 4 5 CN2A DVD C DVD Y GND DVD AUDIO MUTE 6 7 8 9 EV 3 3V DVD ON 3 3V DVD ON 5V EV 9V 14 13 EV 9V DVD MECHANISM...

Page 70: ... 00 V 5 00 V CL 0 00 V 0 25 V 0 00 V SB 1 06 V 1 50 V 1 21 V TL 0 66 V 1 05 V 0 91 V FB 1 99 V 2 60 V 2 17 V SF 1 51 V 1 98 V 1 80 V SM 3 20 V 3 75 V 3 40 V AU 0 26 V 0 65 V 0 44 V AL 4 51 V 5 00 V 5 00 V SS 2 61 V 3 19 V 2 97 V RS Note Symbol Loading Status EJ Eject CL Eject REW Reel SB REW Reel Stop B TL Stop B Brake Cancel FB Brake Cancel FF REW SF FF REW Stop M FF REW SM Stop M FF REW Stop A A...

Page 71: ...IVE PB CTL 66 C F R STILL STILL FRAME ADVANCE ROLL COMPENSATION DRUM SERVO H A SW 15 ROTA AT The first rise of RF SW after a rise in F AD signal ST T1 BL H H T2 Z 1 SP MODE 1 2 3 4 Acceleration Detection Stop Detection Slow Tracking Value Reversal Limit Value ...

Page 72: ...E PB CTL 66 C F R STILL STILL FRAME ADVANCE ROLL COMPENSATION DRUM SERVO H A SW 15 ROTA AT The first rise of RF SW after a rise in F AD signal ST T1 BL H H T2 Z 2 LP EP MODE 1 2 3 4 Acceleration Detection Stop Detection Slow Tracking Value Reversal Limit Value ...

Page 73: ... LD REV LD REV LD FWD LD REV LD REV LD REV 0 2S 0 5S CL EJ SS SS AU AU TL Z ON ON PAUSE SLOW AU AL AL AU SF SM POWER OFF STOP PLAY RS FS STILL SLOW PLAY STOP PLAY SB TL SB FB SM SM SF AL AL RS AU AL SS AU AL SM 0 8S 0 2S 0 3S 1 0S 0 2S 0 5S 0 12S 1 2S 0 2S 1 2S 0 2S 20mS 0 4S 40mS 0 2S 0 2S Refer to STILL SLOW TIMING CHART 1 2 0 3S 0 2S 20mS 40mS 0 4S 0 2S 0 2S 0 2S 0 3S REC SFT SW POWER STOP B PI...

Page 74: ...STOP A LD REV FF LD REV LD REV LD FWD LD FWD LD FWD LD FWD LD FWD LD FWD LD FWD REC PAUSE REC REC REW LD REV LD REV LD REV LD REV LD REV LD REV LD REV PAUSE REC or PAUSE STOP EJECT STOP EJECT STOP EJECT 2 STOP A FF STOP A REW STOP A REC PAUSE PAUSE or REC STOP A EJECT STOP FF STOP REW STOP REC REC REC PAUSE STOP TL TL SM SM SF SF AL AL SM AL AL AL AU AU SM TL SB EJ RS RS SM SM SF FB SM AU AU SS SS...

Page 75: ... Section Tray IN TL221 Sled Drive TP303 Disc Drive TP301 Focus Drive TP304 Tracking Drive TP302 0V 3 3V 0V 1 65V 0V 0V 0V 1 65V 1 65V 1 65V Tray Close Play Play Tray Open Tray Close Disc Rotation Play Disc Stop Tray Open ...

Page 76: ...Control Signal Output to DVD 26 OUT TV VCR LED TV VCR LED Control Signal 27 NU Not Used 28 NU Not Used 29 OUT D REC PB L Delayed Record Playback Control Signal 30 OUT DTV H DTV On Signal at High 31 OUT P ON H Power On Signal at High 32 OUT BUS CONT Bus Control 33 IN REC SAFETY Record Protection Tab Detection 34 IN RESET System Reset Signal Reset L 35 IN XC IN Sub Clock 32kHz 36 OUT XC OUT Sub Cloc...

Page 77: ...Reel Rotation Signal 81 OUT DTV S RESET DTV Reset 82 OUT LD CONT Loading Motor Control Signal 83 OUT DIGITAL AUDIO H Digital Audio Signal 84 IN P DOWN Power Voltage Down Detector Signal 85 IN DTV S SREQ DTV Serial Request 86 NU Not Used 87 IN C FG Capstan Motor Rotation Detection Pulse 88 GND GND AMP 89 NU Not Used 90 IN D PFG Drum Motor Pulse Generator 91 NU Not Used 92 IN AMP VREF IN Standard Vo...

Page 78: ...M MPB E LA72670BM MPB E KIA431 AT P M61276FPTF0H M61116FP TF0G AN17812A Note A Anode K Cathode E Emitter C Collector B Base R Reference S Source G Gate D Drain LA78041 E 1 IN 2 GND 3 OUT 1 2 3 2SC2785 F J KRA103M AT P KRC103M AT P KTC3199 GR AT P KTC3199 Y AT P 2SA1175 F 2SA950 O TE2 F T 2SC2120 O TE2 F T 2SC1627 Y TE2 F T 2SC3331 T 2SC3708S 2SD400 F TLV1117IDCYRG3 2SC5360 FA Q B C E 2SD1666R B E ...

Page 79: ...A1 5 A1 6 A1 4 A1 3 A1 2 B7 TB18 TL6 L4 L4 L4 L4 B6 B6 CRT CBA DVD Main CBA Unit Function CBA DG691 SP802 SP801 CLN551 CLN551 CLN551 W1601 V501 Scotch Tape 880 Scotch Tape 880 TL1 1 TL3 TB2 TL3 DVD Mechanical Parts A1 1 A1X Sensor CBA Sub CBA Main CBA Sensor CBA Digital CBA Unit Digital CBA Unit Parts Junction A CBA 1B1 1B2 TB19 TL1 2 TL1 2 V501 1 L551 Details for L551 and surrounding parts SHINWH...

Page 80: ...1 17 2 T3251PEX Packing FRONT S1 X1 Tape S3 S3 S6 S7 S2 Packing Tape X2 X3 S4 ...

Page 81: ...NG M4X14 DBT14140 L3 1 SCREW P TIGHT 3X10 BIND HEAD GBHP3100 L3 2 SCREW P TIGHT 3X10 BIND HEAD GBHP3100 L4 SCREW ASSEMBLED M3X12 0EM406746A SP801 SPEAKER MAGNETIC S08F72 DSD0808XQ017 SP802 SPEAKER MAGNETIC S08F72 DSD0808XQ017 TB1 TRAY CHASSIS T3220UA 1EM021069 TB2 TOP SHIELD T1100UA 1EM320155 TB18 LASER CAUTION LABEL T8200UA TB19 27V CHASSIS NO LABEL TJ T3200UA TL1 1 SCREW P TIGHT 3X12 WASHER HEAD...

Page 82: ...CAP 4700µF 6 3V SM CE0KMZPDL472 C1134 ELECTROLYTIC CAP 100µF 6 3V M CE0KMASDL101 C1135 CHIP CERAMIC CAP 1608 CH J 68pF 50V CHD1JJ3CH680 C1136 CHIP CERAMIC CAP 1608 CH J 68pF 50V CHD1JJ3CH680 C1137 ELECTROLYTIC CAP 220µF 6 3V M CE0KMASDL221 C1138 CHIP CERAMIC CAP B K 2 2µF 10V CHD1AK30B225 C1139 CHIP CERAMIC CAP B K 2 2µF 10V CHD1AK30B225 C1203 CHIP CERAMIC CAP 1608 B K 0 1µF 50V CHD1JK30B104 C1206...

Page 83: ...2 CHIP CERAMIC CAP 1608 B K 0 01µF 50V CHD1JK30B103 C1763 CHIP CERAMIC CAP 1608 B K 0 01µF 50V CHD1JK30B103 C1764 ELECTROLYTIC CAP 100µF 6 3V H7 CE0KMAVSL101 Ref No Description Part No C1766 ELECTROLYTIC CAP 2 2µF 50V M H7 CE1JMAVSL2R2 C1769 ELECTROLYTIC CAP 22µF 16V M H7 CE1CMAVSL220 C1770 CHIP CERAMIC CAP 1608 B K 4700pF 50V CHD1JK30B472 C1771 CHIP CERAMIC CAP 1608 B K 0 01µF 50V CHD1JK30B103 C1...

Page 84: ...ING DIODE 1SS133 T 77 QDTZ001SS133 D1683 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1684 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 Ref No Description Part No D1685 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1687 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1688 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1689 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1692 PCB JUMPER D0 6 P5 0 JW5 0T D1811 SWITCHING DIODE ...

Page 85: ...R8ZU001 R1145 METAL OXIDE FILM RES 1W J 4 7 Ω RN014R7ZU001 Ref No Description Part No R1146 CARBON RES 1 4W J 1 5 Ω RCX4JATZ01R5 R1147 CARBON RES 1 2W J 2 2 Ω RCX2JZQZ02R2 R1148 CARBON RES 1 4W J 1 2 Ω RCX4JATZ01R2 R1149 CHIP RES 1608 1 10W F 220k Ω RRXAFR5H0224 R1150 CHIP RES 1 10W F 2 2k Ω RRXAFR5H2201 R1151 CARBON RES 1 4W J 470 Ω RCX4JATZ0471 R1152 CHIP RES 1 10W F 22k Ω RRXAFR5H2202 R1153 CHI...

Page 86: ...RRXAJR5Z0122 R1416 CHIP RES 1 10W J 330k Ω RRXAJR5Z0334 Ref No Description Part No R1417 CHIP RES 1 10W J 220 Ω RRXAJR5Z0221 R1418 CHIP RES 1 10W J 330 Ω RRXAJR5Z0331 R1419 CHIP RES 1 10W J 330 Ω RRXAJR5Z0331 R1420 CHIP RES 1 10W J 12k Ω RRXAJR5Z0123 R1421 CHIP RES 1 10W J 8 2k Ω RRXAJR5Z0822 R1422 CHIP RES 1 10W J 270 Ω RRXAJR5Z0271 R1423 CHIP RES 1 10W J 390 Ω RRXAJR5Z0391 R1424 CHIP RES 1 10W J...

Page 87: ...10W J 3 9k Ω RRXAJR5Z0392 R1904 CHIP RES 1 10W J 4 7k Ω RRXAJR5Z0472 R1905 CARBON RES 1 4W J 2 2 Ω RCX4JATZ02R2 Ref No Description Part No R1906 PCB JUMPER D0 6 P5 0 JW5 0T R1907 CARBON RES 1 4W J 1 2k Ω RCX4JATZ0122 R1908 CHIP RES 1 10W J 1 5k Ω RRXAJR5Z0152 R1909 CHIP RES 1 10W J 3 9k Ω RRXAJR5Z0392 R1910 CHIP RES 1 10W J 560 Ω RRXAJR5Z0561 R1911 CHIP RES 1 10W J 8 2k Ω RRXAJR5Z0822 R1913 CARBON...

Page 88: ...MA1JJS00104 C2538 ELECTROLYTIC CAP 47µF 35V M CE1GMASDL470 C2539 ELECTROLYTIC CAP 470µF 35V M CE1GMASDL471 C2540 CAP P P 0 0015µF 1 6KV J CA3C152VC011 C2543 FILM CAP P 0 022µF 50V J CMA1JJS00223 C2552 FILM CAP P 0 22µF 100V J CMA2AJS00224 C2553 ELECTROLYTIC CAP 1µF 50V LL CE1JMASLH1R0 C2555 ELECTROLYTIC CAP 47µF 35V M CE1GMASDL470 C2556 ELECTROLYTIC CAP 1000µF 25V M CE1EMZPDL102 C2558 CHIP CERAMIC...

Page 89: ...tion Part No R2319 CHIP RES 1 10W J 15k Ω RRXAJR5Z0153 R2321 CARBON RES 1 4W J 470 Ω RCX4JATZ0471 R2322 CARBON RES 1 4W J 15 Ω RCX4JATZ0150 R2323 CHIP RES 1 10W J 1k Ω RRXAJR5Z0102 R2324 CHIP RES 1 10W J 3 3k Ω RRXAJR5Z0332 R2325 CHIP RES 1 10W J 3 3M Ω RRXAJR5Z0335 R2326 CHIP RES 1608 1 10W 0 Ω RRXAJR5Z0000 R2327 CHIP RES 1 10W J 100 Ω RRXAJR5Z0101 R2328 CHIP RES 1 10W J 100 Ω RRXAJR5Z0101 R2331 ...

Page 90: ...01 BEAD INDUCTOR FBA04HA600VB 00 LLBF00STU026 CL2504 LEAD WIRE 5P 370MM WX1T3221 001 DB5 X7 DTV HEAT SINK PLS ASSEMBLY T3220UA 1EM422791A DL2 SCREW B TIGHT D3X8 BIND HEAD GBJB3080 JK2601 JACK RCA PCB L MSP 241V 05 NI LFW O JXRL010LY148 T2571 TRANS FBT JF0501 3301 G LTF00CPXB051 T2572 HORIZONTAL DRIVE TRANS PB FREE PY2005 LTH00CPY2005 Ref No Description Part No TP1301 PCB JUMPER D0 6 P10 0 JW10 0T ...

Page 91: ...1 R2407 CHIP RES 1 10W F 15k Ω RRXAFR5Z1502 SWITCHES SW2401 TACT SWITCH SKQSAB SST0101AL038 SW2402 TACT SWITCH SKQSAB SST0101AL038 SW2403 TACT SWITCH SKQSAB SST0101AL038 SW2404 TACT SWITCH SKQSAB SST0101AL038 SW2405 TACT SWITCH SKQSAB SST0101AL038 SW2406 TACT SWITCH SKQSAB SST0101AL038 SW2407 TACT SWITCH SKQSAB SST0101AL038 SW2408 TACT SWITCH SKQSAB SST0101AL038 Ref No Description Part No JUNCTION...

Page 92: ...tent herein without the obligation to notify any person or organization of such changes with is a registered trademark of Funai Electric Co Ltd and may not be used in any way without the express written consent of Funai All other trademarks used herein remain the exclusive property of their respective owners Nothing contained in this manual should be construed as granting by implication or otherwi...

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