Magnavox MWR20V6 Service Manual Download

Page: 66 / 83

1-15-8

W3N4HTI

Tray close

Push close

SLED

INNER-SW

Timer

open

Tray insersion direction

Tray ejection direction

ET3

ET4

SLED

Encoder pulse

ET4

Push Close

INNER-SW

open

Tray insersion direction

Timer

Summary of Contents for MWR20V6

Page 1: ...aration 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 N...

Page 2: ...proper 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 trad...

Page 3: ...VCR 1 8 1 Firmware Renewal Mode 1 9 1 Function Indicator Symbols 1 10 1 Block Diagrams 1 11 1 Schematic Diagrams CBA s and Test Points 1 12 1 Waveforms 1 13 1 Wiring Diagram VCR Section 1 14 1 Wiring...

Page 4: ...e W O Burst 1 4 Video Color S N AM R P dB 37 41 SP Mode 1 5 Video Color S N PM R P dB 30 36 SP Mode 1 6 Resolution PB Line 230 245 SP Mode 2 Servo 2 1 Jitter Low sec 0 07 0 12 SP Mode 2 2 Wow Flutter...

Page 5: ...Component Output Y Luminance 75 ohm load Vp p 1 0 Cb Chrominance 75 ohm load Vp p 0 7 Cr Chrominance 75 ohm load Vp p 0 7 2 AUDIO 2 1 Output Level Vrms 2 0 2 2 Frequency Response DVD VIDEO LPCM fs 48k...

Page 6: ...y from the pickup lens when 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 ha...

Page 7: ...especially 1 Wires covered with PVC tubing 2 Double insulated wires 3 High voltage leads D Use specified insulating materials for hazardous live parts Note especially 1 Insulation tape 2 PVC tubing 3...

Page 8: ...ug prongs and externally exposed accessible parts RF terminals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified...

Page 9: ...achine 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 C...

Page 10: ...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 i...

Page 11: ...s 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...

Page 12: ...ed 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 M on the workbench or other surfa...

Page 13: ...nto the Deck Mechanism Assembly and press the PLAY button The tape will be loaded into the Deck Mechanism Assembly Make sure the power is on connect TP502 S INH to GND This will stop the function of T...

Page 14: ...2 1 3 3 Front Bracket D2 2 S 2 S 3 4 Radiation Sheet D2 5 Jack Bracket D3 2 S 4 6 Jack CBA D3 Jack Earth Plate 7 DVD Mechanism DVD Main CBA Assembly D4 2 S 5A 2 S 5B CN101 CN701 1 Top Cover 2 Front As...

Page 15: ...Before installing the Deck Assembly be sure to place the pin of LD SW on Main CBA as shown in Fig D8 Then install the Deck Assembly while aligning the hole of Cam Gear with the pin of LD SW the shaft...

Page 16: ...01 S 8 8 Rear Panel Unit Fig D6 S 11 S 11 S 9 S 9 AC Cord Earth Plate Hook S 9 S 10 12 Rear Panel 9 Power Supply CBA 11 PCB Holder 10 DC Fan Motor Fig D7 S 13 S 13 S 13 S 14 S 14 S 15 S 16 S 14 S 14 S...

Page 17: ...ue stripe 18 Main CBA SW512 LD SW From FE Head BOTTOM VIEW Lead connections of Deck Assembly and Main CBA Desolder From Capstan Motor Assembly Printing side Desolder From Cylinder Assembly From ACE He...

Page 18: ...he gear 1 Remove the Top Cover 2 Rotate the gear in the direction of the arrow manually as shown below until the tray descends 3 Pull the tray out manually and remove a disc Fig D9 19 Deck Pedestal 20...

Page 19: ...0 001 50 V Div F Range DC AC 20 MHz 2 Alignment Tape FL8A Head Switching Position Adjustment Purpose To determine the Head Switching position during playback Symptom of Misadjustment May cause Head Sw...

Page 20: ...nitializing is completed the DVD recorder exits the Version display mode and turns off the power automatically To move into the Normal mode from the Version display mode press RETURN button on the rem...

Page 21: ...ed as follows 5 After updating is finished the tray opens automatically At this time no button is available 6 Pull out the AC code once then insert it again Fig a Version Up Mode Screen Firmware Versi...

Page 22: ...working properly P ON 5V Power safety detection Led Mode Indicator Active When reel or capstan mechanism is not functioning correctly A R is displayed on a TV screen Refer to Fig 1 When tape loading m...

Page 23: ...tes 12 Difference in the address and can not get StreamID of RDI VIDEO 13 It is a reply that ATAPI is not readable 14 Cannot write the data after recovering SMALL VMGI 15 Cannot write the data after D...

Page 24: ...disc The maximum is 999 Delete unnecessary chapter markers 33 The 999 chapter has been reached VR Format Disc 9 You cannot record on this disc as Control Information is full Delete unnecessary titles...

Page 25: ...YCA SDA YCA CS YCA SCL 19 YCA SDA 20 YCA CS 21 YCA SCL YCA SDA YCA CS TO VIDEO BLOCK DIAGRAM TO VIDEO OUTPUT SELECT BLOCK DIAGRAM TO VIDEO INPUT SELECT BLOCK DIAGRAM TO AUDIO INPUT OUTPUT SELECT BLOC...

Page 26: ...T 34 DECK ASSEMBLY END S T REEL T REEL ST S ST S Q504 Q503 Q506 SW POINT AL 5V VR501 TP506 TP505 END S TP507 SW511 REC SW LD SW 87 AL 12V AL 5V AL 5V SW512 AL 18V P ON 5V 1 MODE SW AL 5V D555 S LED 5...

Page 27: ...K26 P24 T3 P2 R1 P3 R2 AIMS R26 VIDEO Y I P VIDEO C VIDEO Cb Pb VIDEO Cr Pr D A D A D A D A AUDIO I F VIDEO ENCODER BACK END DIGITAL SIGNAL PROCESS VIDEO I F FLASH MEMORY FE ENCODER TRAY OPEN IC102 D...

Page 28: ...IAGRAM TO VIDEO OUTPUT SELECT BLOCK DIAGRAM VCR VIDEO DVD VIDEO DUB VCR DVD TO SYSTEM CONTROL BLOCK DIAGRAM CYLINDER ASSEMBLY RF SW RF SW 59 V ENV H A SW H A COMP H A COMP TP302 VIDEO L 2 HEAD VIDEO R...

Page 29: ...K804 TU900 TUNER UNIT JK806 S VIDEO IN2 3 4 2 1 Y C VIDEO IN2 JK803 13 17 19 15 8 10 12 2 21 4 17 CN1609 CN1605 22 23 24 VIDEO SW2 TO SYSTEM CONTROL BLOCK DIAGRAM VIDEO SW3 FRONT JACK CBA VIDEO OUT CO...

Page 30: ...VER 6 10 4dB AMP 2dB AMP LPF DRIVER 8 VIDEO Cb Pb OUT VIDEO Y OUT VIDEO Cr Pr OUT JK1403 VIDEO OUT COMPOSITE JK751 TP751 V OUT 3 TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM DVD VIDEO DUB SW CTL PB EE VIDE...

Page 31: ...C AUDIO PROCESS 76 80 78 TUNER LINE 1 LINE 2 4 AUDIO PB REC CN504 3 AUDIO COM 1 AE H 2 AE H FE H AUDIO HEAD AUDIO ERASE HEAD AC HEAD ASSEMBLY FE HEAD DECK ASSEMBLY 1 FE H 2 FE H GND CN501 MAIN CBA PB...

Page 32: ...1 IN1 TU IN2 R CH SW CTL AUDIO SW2 AUDIO SW1 TO SYSTEM CONTROL BLOCK DIAGRAM SW CTL OP AMP IC804 OUTPUT SELECT IC1406 6 2 7 1 JK751 AUDIO L OUT2 AUDIO R OUT2 TO SYSTEM CONTROL BLOCK DIAGRAM TO SYSTEM...

Page 33: ...4 27 LINE R IN LINE L IN N A OUT DVD AUDIO L DVD AUDIO R LIM 49 MUTE LINE L OUT MOD AUDIO LINE R OUT N A IN Hi Fi H SW AUDIO MUTE NORMAL L TO AUDIO BLOCK DIAGRAM IIC BUS SDA IIC BUS SCL P ON 9V TO SYS...

Page 34: ...P DOWN H P ON 3 3V EV 2 4V P ON 5V AUDIO 5V P ON 11V 9V REG SW 5V SW 5V SW 11V FAN CONT1 Q104 Q105 Q057 SW 5V 3 3V REG IC1503 2 5V REG IC1504 P ON 2 5V REG CONT1 SWITCHING Q205 Q107 Q108 FAN CONTROL...

Page 35: ...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 sa...

Page 36: ...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...

Page 37: ...1 12 3 Main 1 7 Schematic Diagram VCR Section E9A80SCM1...

Page 38: ...3G 2G 1G 7G 6G a d g h h g c b e f REPEAT PM REC VCD VCR DVD R XP SP LP EP SLP P SCAN SEP W CD T C 7G 6G 5G 4G 3G 2G 1G a b c d e f g c d e f g g c d e f g c d e f g c d e f g c d e f g h h i a b a b...

Page 39: ...1 12 5 Main 3 7 Schematic Diagram VCR Section E9A80SCM3...

Page 40: ...1 12 6 Main 4 7 Schematic Diagram VCR Section E9A80SCM4...

Page 41: ...1 12 7 Main 5 7 Schematic Diagram VCR Section E9A80SCM5...

Page 42: ...1 12 8 Main 6 7 Schematic Diagram VCR Section E9A80SCM6...

Page 43: ...1 12 9 Main 7 7 Schematic Diagram VCR Section E9A80SCM7...

Page 44: ...the AC power supply Otherwise it may cause some components in the power supply circuit to fail Ce symbole repr sente un fusible fusion rapide CAUTION For continued protection against fire hazard repl...

Page 45: ...1 12 11 Front Jack Schematic Diagram VCR Section E9A80SCJK...

Page 46: ...atic Diagram DVD Section E9A80SCD1 NOTE 1 The order of pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into five and shown as IC101 1 5 IC101 5 5 in this DVD Main...

Page 47: ...atic Diagram DVD Section E9A80SCD2 NOTE 1 The order of pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into five and shown as IC101 1 5 IC101 5 5 in this DVD Main...

Page 48: ...atic Diagram DVD Section E9A80SCD3 NOTE 1 The order of pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into five and shown as IC101 1 5 IC101 5 5 in this DVD Main...

Page 49: ...4 5 Schematic Diagram DVD Section NOTE 1 The order of pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into five and shown as IC101 1 5 IC101 5 5 in this DVD Main...

Page 50: ...atic Diagram DVD Section E9A80SCD5 NOTE 1 The order of pins shown in this diagram is different from that of actual IC101 2 IC101 is divided into five and shown as IC101 1 5 IC101 5 5 in this DVD Main...

Page 51: ...SENSOR CBA START SENSOR SW P VR501 CTL TP513 RF SW TP302 WF2 C PB TP301 WF3 V OUT TP751 WF1 TO SENSOR CBA END SENSOR S INH TP502 BE9A00F01011A Main CBA Top View Sensor CBA Top View BHF300F01012A BHF3...

Page 52: ...WF12 PIN 10OF TU900 WF13 PIN 11 OF TU900 WF14 PIN 17 OF TU900 WF15 PIN 2 OF IC1406 WF6 PIN 14 OF CN201 PIN 26 OF CN201 WF8 PIN 28 OF CN201 WF7 WF9 PIN 22 OF CN201 WF5 PIN 24 OF CN201 WF4 PIN 28 OF CN2...

Page 53: ...y circut an isolation transformer must be used Also in order to have the ability to increase the input slowly when troubleshooting this type power supply circuit a variable isolation transformer is re...

Page 54: ...ly circut an isolation transformer must be used Also in order to have the ability to increase the input slowly when troubleshooting this type power supply circuit a variable isolation transformer is r...

Page 55: ...Jack CBA Bottom View DVD Open Close SW CBA Top View DVD Open Close SW CBA Bottom View Power SW CBA Top View Power SW CBA Bottom View BE9A00F01011D BE9A00F01011C BE9A00F01011B Junction CBA Top View Ju...

Page 56: ...6 Pin 2 of IC1406 VIDEO CVBS 0 5V 20 s WF14 Pin 11 of TU900 WF13 Pin 10 of TU900 WF15 Pin 17 of TU900 NOTE Input COLOR BAR SIGNAL WITH 1KHz AUDIO SIGNAL WF3 WF1 UPPER WF2 WF2 LOWER TP751 TP302 UPPER L...

Page 57: ...GND AL 4V F1 F2 POW P 1 2 3 4 5 6 7 8 9 1 1 2 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 8 9 3 3 5 9 12 15 1 2 4 6 7 8 10 11 13 14 16 17 18 POWER SUPPLY CBA AC CORD Hi Fi AU...

Page 58: ...D 39 OCW 40 LDSW 13 RF FOCUS ACTUATOR TRACKING ACTUATOR TILT ACTUATOR DVD CD LASER DIODE DRIVE PDIC FPDIC CD LD DVD LD TRAY OPEN SLED SENSOR SPINDLE MOTOR 1 2 3 AUDIO L OUT 14 GND 13 DVD AUDIO MUTE 12...

Page 59: ...0 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...

Page 60: ...e Fig 1 23 RF SW F AD Internal Signal C DRIVE PB CTL 32 C F R 99 H A SW 98 C ROTA The first rise of RF SW after a rise in F AD signal Acceleration Detection T1 AT H Z H L L Stop detection T2 ST Slow T...

Page 61: ...Internal Signal C DRIVE PB CTL 32 C F R 99 H A SW 98 C ROTA H Z H L L STILL STILL AT ST BL Stop detection T2 Acceleration Detection T1 Slow Tracking Value Reversal Limit Value FRAME ADVANCE The first...

Page 62: ...EV LD REV LD REV 0 2S 0 5S PIN NO CL EJ SS SS AU AU TL LD SW CL SS LM FWD M REV C DRIVE Z ON ON C F R DRUM ROTATION P ON L A MUTE H D REC H D PB PAUSE SLOW AU AL AL AU SF SM EJ AU RS SF SM TL FB AL SB...

Page 63: ...EJECT 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 S...

Page 64: ...se Rezero 2 INNER SW open Is Timer ET1 passed INNER SW open Is Timer ET4 passed Is slit S5 passed Is Timer ET3 passed Is Timer ET1 passed Retry OK Is slit S1 passed Is not slit passed Is Timer ET2 pas...

Page 65: ...0d S1 300 12c T1 0 1 s ET1 5 0 s V1 4 5 V 022 S2 3300 ce4 T2 3 0 s ET2 5 0 s V2 2 2 V 010 S3 3935 f5f T3 3 0 s ET3 3 0 s V3 2 4 V 013 S4 0 000 T4 0 1 s ET4 3 0 s V4 6 0 V 030 S5 3000 bb8 T5 0 1 s SLED...

Page 66: ...ay close Push close SLED INNER SW Timer close open Tray insersion direction Tray ejection direction S5 V3 V4 S4 ET3 ET4 SLED Encoder pulse S5 T3 V3 V4 ET4 Push Close INNER SW close open Tray insersion...

Page 67: ...n is pressed after the S5 passage It starts opening after making closing complete once SLED open Tray insersion direction close INNER SW Timer T2 Rezero 1 ET4 V3 V4 SLED INNER SW open Rezero 2 Tray in...

Page 68: ...etry frequency V1 1st time retry 6 v 2nd time retry 7 v 3rd time retry 8 v 4th time retry 9 v 5th time retry 9 v 6th time retry 9 v SLED Tray ejection direction S1 V1 V2 6v open Tray insersion directi...

Page 69: ...Data 21 OUT YCA CS YCA IC Control Chip Select 22 IN REC SAF SW Recording Safety SW Detect With Record tab L With out Record tab H 23 OUT RF SW Video Head Switching Pulse 24 OUT D V SYNC Dummy V sync...

Page 70: ...OUT CTL Amp Output Control Signal for Test Point 77 NU Not Used 78 IN Hi Fi NOR IN Audio Mode Input HiFi L Normal H 79 IN DVD POWER SAFETY DVD Power Supply Safety Signal Pin No IN OUT Signal Name Func...

Page 71: ...e Strobe 3 NU Not Used 4 NU Not Used 5 VSS GND 6 VDD Power Supply 7 OUT a Segment Output 8 b 9 c 10 d 11 e 12 f 13 g 14 h 15 VEE Pull Down Level 16 OUT i Segment Output 17 OUT 7G Grid Output 18 6G 19...

Page 72: ...G Gate D Drain KRA103M AT P KRC103M AT P KTA1267Y AT P KTC3193 Y AT P KTC3199 BL Y AT P KTA1266 Y AT P KTC3198 Y AT P KTC3203 Y AT P 2SC3266 GR TPE2 F PS2561A 1 W PT204 6B 12 KIA4558P P RC4580IP CD40...

Page 73: ...3 2B31 2L033 2L045 2L045 2B19 2B14 A2 2L033 2L033 2L033 C 2L111 2L110 2B71 2B72 2L022 2L021 2L054 2L052 W001 2L017 2L017 2L017 2L017 2L017 2B1 2L014 2L061 2L015 E E D 2L015 2B11 A34 2B13 A34 A18 C A1X...

Page 74: ...1 18 2 E9A80PEX Packing S1 A14 S2 S2 S2 Unit S3 Some Ref Numbers are not in sequence X1 X22 X4 X20 X5 X2 X3 S2 2B64...

Page 75: ...011 SCREW C TIGHT M3X5 BIND HEAD GBCC3050 2L013 SCREW S TIGHT M3X6 BIND HEAD GBJS3060 2L014 SCREW S TIGHT M3X6 BIND HEAD GBJS3060 2L015 SCREW M3X5 HEAD BIND S TIGHT GBJS3050 2L017 SCREW S TIGHT M3X8 B...

Page 76: ...319 CHIP CERAMIC CAP 1608 B K 0 01 F 50V CHD1JK30B103 C320 CERAMIC CAP AX Y M 0 01 F 16V CCA1CMT0Y103 C321 CHIP CERAMIC CAP 1608 B K 0 01 F 50V CHD1JK30B103 C324 CHIP CERAMIC CAP 1608 B K 0 01 F 50V C...

Page 77: ...DL101 C829 CHIP CERAMIC CAP 1608 B K 0 1 F 50V CHD1JK30B104 C835 ELECTROLYTIC CAP 470 F 6 3V M CE0KMASDL471 Ref No Description Part No C839 ELECTROLYTIC CAP 1 F 50V M CE1JMASDL1R0 C840 CHIP CERAMIC CA...

Page 78: ...ATTU120 L505 INDUCTOR 100 H K LAP02TA101K LLAXKATTU101 Ref No Description Part No L771 PCB JUMPER D0 6 P5 0 JW5 0T L800 PCB JUMPER D0 6 P5 0 JW5 0T L801 PCB JUMPER D0 6 P5 0 JW5 0T L900 PCB JUMPER D0...

Page 79: ...JR5Z0473 R456 CHIP RES 1 10W J 6 8k RRXAJR5Z0682 R457 CHIP RES 1 10W J 470 RRXAJR5Z0471 Ref No Description Part No R458 CHIP RES 1 10W J 3 3k RRXAJR5Z0332 R459 CHIP RES 1 10W J 39k RRXAJR5Z0393 R463 C...

Page 80: ...1 10W J 1 5k RRXAJR5Z0152 R871 CHIP RES 1 10W J 220 RRXAJR5Z0221 R872 CHIP RES 1 10W J 220 RRXAJR5Z0221 Ref No Description Part No R875 CHIP RES 1 10W J 4 7k RRXAJR5Z0472 R876 CHIP RES 1 10W J 4 7k R...

Page 81: ...rt No R815 CHIP RES 1 10W J 75 RRXAJR5Z0750 MISCELLANEOUS JK800 RCA JACK RED MTJ 032 11A 31 FE01 JYRL010LY024 JK801 RCA JACK WHITE MTJ 032 11B 41 FE01 JXRL010LY102 JK803 RCA JACK YELLOW MTJ 032 11B 40...

Page 82: ...10W 0 RRXAJR5Z0000 R018 CHIP RES 1 10W J 4 7k RRXAJR5Z0472 R019 CHIP RES 1 10W J 1 8k RRXAJR5Z0182 R020 CHIP RES 1608 1 10W 0 RRXAJR5Z0000 R021 CHIP RES 1608 1 10W F 2 2k RRXAFR5H0222 R022 CHIP RES 1...

Page 83: ...MWR20V6 E9A80UD 2006 03 24...

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