Emerson EWV401B Service Manual Download

Page: 59 / 83

2-4-6

U25NDA

[19]

(S-11)

Cap Belt

Fig. DM11

[20]

(C-1)

[21]

Portions A

View for A

Portions A on [21] must be set
in the slot on [20] as shown.

Fig. DM12

Summary of Contents for EWV401B

Page 1: ...C PLAY STOP EJECT REC OTR MENU SERVICE MANUAL Sec 1 Main Section I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA s Sec 2 Deck Mechanism Section I Standard Maintenance I Alignment for Mechanism I Disassembly Assembly of Mechanism I Alignment Procedures of Mechanism Sec 3 Exploded views and Parts List Section I Exploded views I Parts List EWV401B EWV60...

Page 2: ...injury to service personnel The possibility exists that improper ser vice 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 und...

Page 3: ...tructions 1 6 1 Electrical Adjustment Instructions 1 7 1 Block Diagrams 1 8 1 Function Indicator Symbols 1 8 11 Power Supply Trouble Shooting Guide 1 8 12 Schematic Diagrams CBA s and Test Points 1 9 1 Waveforms 1 10 1 Wiring Diagrams 1 11 1 System Control Timing Charts 1 12 1 IC Pin Function Descriptions 1 13 1 Lead Identifications 1 14 1 Sec 1 Main Section I Specifications I Preparation for Serv...

Page 4: ...t 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 µsec 0 07 0 12 SP Mode 2 2 Wow Flutter 0 3 0 5 SP Mode 3 Normal Audio 3 1 Output PB dBV 9 6 3 SP Mode 3 2 Output R P dBV 9 6 1 5 SP Mode 3 3 S N R P dB 36 41 SP Mode 3 4 Distortion R P 1 0 4 0 SP Mode 3 5 Freq resp R P at 200Hz dB 11 4 SP Mode 20dB...

Page 5: ...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 Spacers 4 Insulators for transistors E When replacing AC primary side components transformers power cord etc wrap ends of wires securely about the terminals before solder ing F Observe that the wires ...

Page 6: ... and externally exposed accessible parts RF termi nals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below 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 the terminals of load Z See Fi...

Page 7: ...e the flat pack IC with tweezers while apply ing 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 up Then remove glue will be melted Fig S 1 6 4 Release the flat pack IC from the CBA using twee zers Fig S 1 6 Caution 1 Do not supply hot air to the chip parts around the flat pac...

Page 8: ... pins of the flat pack IC you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or hot air blower pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig S 1 5 4 Bottom of the flat pack IC is fixed with glue to the CBA when removing e...

Page 9: ...ur due to a potential difference caused by electro static charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1MΩ that is prop erly grounded 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 1MΩ on the workbench or other surface where the semi ...

Page 10: ...s will stop the function of Tape Start Sensor Tape End Sen sor and Reel Sensors If these TPs are connected before plugging in the unit the function of the sensors will stay valid See Fig 1 Note Because the Tape End Sensors are inactive do not run a tape all the way to the start or the end of the tape to avoid tape damage About REC Safety Switch Caution The REC Safety Switch is directly mounted on ...

Page 11: ... Input jack 17 POWER indicator 18 VCR TV indicator 19 TAPE IN indicator 20 TIMER indicator 21 REC indicator DESCRIPTION OF CONTROLS 1 POWER button 2 NUMBER buttons 3 MENU button 4 DISPLAY button 5 SLOW button 6 REW button 7 STOP button 8 RECORD button 9 PAUSE STILL button 10 F FWD button 11 PLAY button 12 COUNTER MEMORY button 13 EXIT RESET button 14 SEARCH MODE button 15 CHANNEL buttons 16 VCR TV...

Page 12: ... Locking Tabs L 1 and L 2 are fragile Be careful not to break them 1 Release Locking Tab L 3 and remove five Screws S 2 Then slowly lift the VCR Chassis Unit Deck Assembly Function CBA and Main CBA up 2 When reassembling solder wire jumpers as shown in Fig D4 3 Before installing the Deck Assembly be sure to place the pin of LD SW on Main CBA as shown in Fig D5 Then install the Deck Assembly while ...

Page 13: ... 3 Desolder Desolder 4 Function C B A 5 Deck Assembly FE Head Cylinder Assembly AC Head Assembly TOP VIEW From FE Head From Cylinder Assembly From AC Head Assembly Lead with white stripe Lead with white stripe Lead with red stripe From Capstan Motor Assembly Lead connections of Deck Assembly and Main CBA Fig D4 ...

Page 14: ...1 6 3 HB300DC LD SW Pin Hole Hole Shaft Cam Gear 6 Main CBA 5 Deck Assembly 6 Main CBA SW507 LD SW Pin Fig D5 ...

Page 15: ...e Dual trace with 10 1 probe V Range 0 001 50V Div F Range DC AC 20MHz 2 Alignment Tape FL8A Head Switching Position Adjust ment Purpose To determine the Head Switching point during playback Symptom of Misadjustment May cause Head Switching noise or vertical jitter in the picture Reference Notes Play back the Alignment tape and adjust VR501 so that the V sync front edge of the CH1 video output wav...

Page 16: ... TRICK C G APC SP LP SLP 45 SP LP SLP BLUEBACK ON 66 BLUEBACK ON P ON L 60 P ON L P DOWN L 63 P DOWN L H A SW 16 H A SW H A COMP 14 H A COMP D PB H D REC H SW506 REC SW FROM TO VIDEO BLOCK TO AUDIO BLOCK TO Hi Fi AUDIO BLOCK 3 1 KEY 2 KEY SWITCH CL507 CN651 FUNCTION CBA 1 8 1 1 8 2 HB3J1BLS CLOCK DATA TU701 TUNER UNIT 61 INSEL ST SL INSEL ST SL 7 11 12 TIMER LED CAS IN LED VCR TV LED 93 88 84 REC ...

Page 17: ...X 6dB AMP ENV DET AGC AMP HPF FROM TO SERVO SYSTEM CONTROL BLOCK FROM TO SERVO SYSTEM CONTROL BLOCK CYLINDER ASSEMBLY R L RF SW RF SW 93 V ENV H A SW H A COMP H A COMP TP302 WF2 VIDEO L 2 HEAD VIDEO R 2 HEAD TP301 C PB BUFFER D V SYNC C SYNC BLUEBACK ON BLUEBACK ON BLUEBACK SP LP SLP SP LP SLP C ROTA D V SYNC C ROTA 34 14 71 39 59 41 73 TRICK C G APC TRICK C G APC INSEL ST SL 74 45 47 49 44 Q301 B...

Page 18: ...CBA PB AUDIO SIGNAL REC AUDIO SIGNAL Mode SP REC 16 11 12 D REC H D REC H REC EE PB A MUTE H D PB H FROM SERVO SYSTEM CONTROL BLOCK FULL ERASE HEAD WF8 78 80 2 SIF A IN L A IN R A IN L F A IN R F A OUT R N A OUT MOD A N A IN JK751 JK752 JK754 JK755 A OUT R A OUT L A IN L A IN R A IN L A IN R FROM TO Hi Fi AUDIO BLOCK FRONT REAR A OUT L TYPE A TU701 AUDIO IN AUDIO OUT 2 14 SIF OUT 15 WF8 WF13 WF13 ...

Page 19: ... 37 38 39 54 77 1 40 26 24 27 SIF A IN R A IN L N A OUT A IN R F A IN L F AGC AGC DET 49 MUTE A OUT L MOD A A OUT R N A IN Hi Fi H SW A MUTE H NORMAL H 51 ST SAP MODE FROM TO AUDIO BLOCK Hi Fi DATA Hi Fi CLK Hi Fi CS P ON 9V TO SERVO SYSTEM CONTROL BLOCK Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD CYLINDER ASSEMBLY MAIN CBA Hi Fi A R 7 Hi Fi COM 8 Hi Fi A L 9 CL253 IC451 MTS SAP Hi Fi AUDIO PROCESS Hi F...

Page 20: ...CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MEMO TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à fusion rapide A V A V HB3J1BLP 1 8 9 1 8 10 AC001 F001 1A 250V LINE FILTER L001 D001 D004 BRIDGE RECTIFIER Q001 Q0...

Page 21: ...de L TAPE IN 1 When reel and capstan mechanism is not functioning correctly 2 When tape loading mechanism is not functioning correctly 3 When cassette loading mechanism is not functioning correctly 4 When the drum is not working properly Cassette in H Cassette out L Cassette in Cassette in Cassette in Cassette in Blinks at 0 8Hz interval Blinks at 1 6Hz interval Blinks at 3 2Hz interval Blinks at ...

Page 22: ...r form check according to the step 1 and 2 of repair method 1 and check the following parts Remove the part from PCB Switching FET Q001 source resistor R014 gate resistor R008 and start resistor R004 and R005 Repair method 3 A circuit to turn on switching FET Q001 may not work and this may be regarded as a cause of trouble Even if the load at the secondary side is short circuited it cannot be dete...

Page 23: ...dentified by the mark 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 speci fied in the parts list may create shock fire or other hazards Capacitor Temperature Markings Capacitors and transistors are represented by the fol low...

Page 24: ...bility of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Wire Connectors 1 Prefix symbol CN means connector can disconnect and reconnect 2 Prefix symbol CL means wire solder holes of the PCB wire is soldered directly 5 Mode SP REC 6 Voltage indications for PLAY and REC modes on the schematics are as show...

Page 25: ...or more of the following Diodes all five should be replaced D595 D596 D597 D598 D599 1 Main 1 3 Schematic Diagram EWV401B Main 1 4 Schematic Diagram EWV601B Main 1 3 Schematic Diagram EWV401B Main 1 4 Schematic Diagram EWV601B Ref No Position IC501 D 3 Q501 E 2 Q503 A 3 Q504 A 2 Q506 B 2 CL501 F 4 CL502 F 5 CL504 F 4 CL507 A 4 VR501 A 3 TP502 D 4 TP505 B 2 TP506 B 3 TRANSISTORS TEST POINTS ICS VAR...

Page 26: ... exchangeable and can be equally used whichever the model is The difference between type A and type B is shown in the table below 2 TYPE B UTUNNTUAL030 TYPE A UTUNNTUSP020 J192 J193 NU NU WIRE WIRE NU Not Used TU701 J194 NU WIRE J215 NU WIRE Main 2 3 Schematic Diagram EWV401B Main 2 4 Schematic Diagram EWV601B Ref No Position IC301 H 2 Q301 J 3 Q302 J 4 Q303 J 4 Q391 J 2 Q421 H 2 Q422 G 1 Q425 H 1...

Page 27: ...rcuit to fail CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MEMO TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à fusion rapide A V F 1 9 9 1 9 10 HB3J1SCM3 Main 3 3 Schematic Diagram EWV401B Main 3 4 S...

Page 28: ...Q1 R1 S1 T1 Q2 R2 S2 T2 Q3 R3 S3 T3 PB Audio Signal PB Video Signal REC Audio Signal REC Video Signal Main 4 4 Schematic Diagram EWV601B 1 9 11 1 9 12 HB4J1SCM4 ...

Page 29: ...1 9 13 1 9 14 Function Schematic Diagram HB3J1SCF ...

Page 30: ...1 9 16 Function CBA Top View Function CBA Bottom View BHB400F01016 B NOTE Either BHB400F01016 BHB400F01017 is used for the Function CBA in this S M BHB400F01017 B Function CBA Top View Function CBA Bottom View ...

Page 31: ...lug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MEMO TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à ...

Page 32: ...perating fuse Ce symbole reprèsente un fusible à fusion rapide A V F BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT 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 REQUIRED Note The Tuner Unit TU701 is either type A or type B Wave Form wi...

Page 33: ...some components in the power supply circuit to fail CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MEMO TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à fusion rapide A V F BECAUSE A HOT CHASSIS GROUND I...

Page 34: ...PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MEMO TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à fusion rapide A V F BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT AN ISOLATION TRANSFORMER MUST BE USE...

Page 35: ... The Tuner Unit TU701 is either type A or type B Wave Form will be different It depends on the type of tuner used on the unit you are servicing V OUT 0 1V x 10 RF SW 0 5V x 10 50usec PLL DATA 0 1V x 10 2msec C PB 10mV x 10 RF SW 0 5V x 10 5msec TU VIDEO 20mV x 10 10usec MOD V 20mV x 10 2msec PLL CLK 0 1V x 10 2msec WAVEFORMS 1 10 1 U25WFF ...

Page 36: ...D CONT 11 D PG 12 FE H 1 FE H GND 2 CL501 CL502 CL504 CL253 CAPSTAN MOTOR FULL ERASE HEAD FE HEAD VIDEO R 1 HEAD VIDEO L 1 HEAD GND KEY2 2 3 2 KEY1 1 3 1 CN651 CL507 AC CORD ANT IN ANT OUT VIDEO OUT AUDIO IN R AUDIO IN L VIDEO IN AUDIO OUT R AUDIO OUT L REAR VIDEO IN AUDIO IN R AUDIO IN L FRONT VIDEO L 2 HEAD VIDEO R 2 HEAD Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD M DRUM MOTOR PG SENSOR DECK ASSEMBLY...

Page 37: ...51V 1 98V 1 80V AU 3 20V 3 75V 3 40V AL 0 26V 0 65V 0 44V SS 4 51V 5 00V 5 00V GC 2 61V 3 19V 2 97V RS Note Note EJ RS Loading FWD LM FWD H LM REV L RS EJ Loading REV LM FWD L LM REV H Stop A Loading Stop B Unloading Note Symbol Loading Status EJ Eject CL Eject REW Reel SB REW Reel Stop B TL Stop B Brake Cancel FB Brake Cancel SF Stop A AU Stop A Play REC AL Play REC Still Slow SS Still Slow Capst...

Page 38: ...ignal 5 C DRIVE 37 PB CTL 10 C F R 11 H A SW 12 ROTA AT H Z H L L ST BL STILL FRAME ADVANCE STILL The first rise of RF SW after a rise in F AD signal Stop detection T2 Slow Tracking Value Acceleration Detection T1 Reversal Limit Value Fig 1 ...

Page 39: ...Internal Signal 5 C DRIVE 37 PB CTL 10 C F R 11 H A SW 12 ROTA STILL STILL AT ST BL Stop detection T2 Acceleration Detection T1 Slow Tracking Value Reversal Limit Value FRAME ADVANCE The first rise of RF SW after a rise in F AD signal Fig 2 ...

Page 40: ...V LD FWD LD FWD LD REV LD REV LD REV 0 5S PIN NO CL EJ SB TL SB GC FB GC SS AL SS AU AU TL 74 LD SW CL GC 59 LM FWD M REV C DRIVE Z ON ON VCR 48 C F R DRUM ROTATION 60 P ON POWER OFF STOP PLAY RS FS STILL SLOW PLAY STOP PLAY 13 A MUTE H 62 D REC H 2 TV VCR 61 D PB L DISPLAY PAUSE SLOW AU RS AL AL AL SF SS AL AU AU AU SF FB SF SF AL AL 1 5S 2H 2 5S 4H 0 2S 0 1S EJ AL RS SF AU TL FB SS SB 0 2S 0 8S ...

Page 41: ... REV LD REV FF PIN NO SF FB TL AL GC FB GC SS AL SS AU AU TL 74 LD SW CL GC 59 LM FWD M REV C DRIVE Z ON ON VCR 48 C F R DRUM ROTATION 60 P ON STOP FF STOP REW STOP REC REC REC PAUSE STOP 13 A MUTE H 62 D REC H 2 TV VCR 61 D PB L DISPLAY PAUSE REC or PAUSE STOP EJECT STOP EJECT STOP EJECT AU FB FB AU SS GC RS AL AL SF FB TL SB CL EJ RS SS GC AL AU AU AU FB SF SF SF SF SF AU AL AL FB SF EJ AL RS SF...

Page 42: ... OUT HiFi CLK HiFi IC Control Clock Output H L 12 A N U Not Used B OUT HiFi DATA HiFi IC Control Data Output H L 13 OUT A MUTE Audio Mute Control Signal Mute H H 14 IN H A COMP Head Amp Comparator Signal H L 15 OUT C ROTA Color Phase Rotary Changeover SIgnal H L 16 OUT H A SW Video Head AmpSwitching Pulse H L 17 OUT RF SW Video Head Switching Pulse H L 18 A N U Not Used B OUT HiFi H SW HiFi Audio ...

Page 43: ...Reel Rotation Signal PULSE 50 N U Not Used Pin No Mark IN OUT Signal Name Function Active Level 51 IN C FG Capstan Motor Rotation Detection Pulse PULSE 52 IN D FG Drum Motor Rotation Detection Pulse PULSE 53 IN D PG Drum Motor Pulse Generator PULSE 54 IN PB CTL Playback Control Signal PULSE 55 OUT C CONT Capstan Motor Control Signal PWM 56 OUT D CONT Drum Motor Control Signal PWM 57 N U Not Used 5...

Page 44: ...Vcc A D Converter Power Input Standard Voltage Input 77 FLDVCC FLDVcc 78 FLDVP GND 79 N U Not Used 80 N U Not Used 81 N U Not Used 82 N U Not Used 83 OUT REC LED REC LED Signal Output H L 84 OUT TIMER LED TIMER LED Signal Output H L 85 N U Not Used 86 N U Not Used 87 N U Not Used 88 OUT CAS IN LED CASSETTE LED Signal Output H L 89 N U Not Used 90 N U Not Used 91 N U Not Used 92 N U Not Used 93 OUT...

Page 45: ...F4M T KTA1266 GR KTC3193 Y KTC3199 Y GR BL 2SC2785 J H F K KTA1267 Y GR KRC103M KRA103M 2SA1175 J H F 2SC1815 BL TPE2 2SC1815 Y TPE2 2SC1815 GR TPE2 2SC3331 T U 2SC2120 Y TPE2 KTC3203 Y KTC3198 Y GR 2SA1015 GR TPE2 E C B E C B 2SC536NF NG NPA AT A K C E LTV 817 B C F EL817 A B C QSZAA0RMB108 LA71091M S D G 2SK3374 2SK3472 2SK2599 E C MID 32A22 PT204 6B 12 LEAD IDENTIFICATIONS ...

Page 46: ...vice Fixtures and Tools 2 2 1 Mechanical Alignment Procedures 2 3 1 Disassembly Assembly Procedures of Deck Mechanism 2 4 1 Alignment Procedures of Mechanism 2 4 9 Sec 2 Deck Mechanism Section I Standard Maintenance I Alignment for Mechanism I Disassembly Assembly of Mechanism I Alignment Procedures of Mechanism ...

Page 47: ...bove refer to Deck Exploded Views B73 Recording Model only H Hours Check I Change Deck Periodic Service Schedule Ref No Part Name 1 000 H 2 000 H 3 000 H 4 000 H B2 Cylinder Assembly I I B3 Loading Motor Assembly I B8 Pulley Assembly I I B27 Tension Lever Sub Assembly I I B31 AC Head Assembly I B573 B574 Reel S Reel T I B37 Capstan Motor I I B52 Cap Belt I I B73 FE Head I B133 Idler Assembly I I B...

Page 48: ... hard material but since it is very thin avoid cleaning it vertically 2 Wait for the cleaned part to dry thoroughly before operating the unit 3 Do not reuse a stained head cleaning stick or a stained chamois cloth Cleaning of Audio Control Head Clean the head with a cotton swab Procedure 1 Remove the top cabinet 2 Dip the cotton swab in 90 isopropyl alcohol and clean the audio control head Be care...

Page 49: ...2 Alignment Tape FL8N 2Head only FL8NW 4Head only Azimuth and X Value Adjustment of Audio Control Head Adjustment of Envelope Waveform J 2 Guide Roller Adj Screwdriver Available Locally Guide Roller J 3 Mirror Available Locally Tape Transportation Check J 4 Azimuth Adj Screwdriver Available Locally A C Head Height J 5 X Value Adj Screwdriver Available Locally X Value ...

Page 50: ...that the Moving guide preparations are in the Eject Position 4 Turn the LDG Belt in the appropriate direction shown in Fig M1 until the Moving guide prepara tions come to the Eject Position Stop turning when the preparations begin clicking or can not be moved further However the tape will be left wound around the cylinder 5 Turn the LDG Belt in the appropriate direction con tinuously and the casse...

Page 51: ... the X value and envelope Not good Do the final tape traveling test to see that the tape runs normally in play mode with out creasing or slacking Completion Not good OK OK OK Not good Not good OK Flowchart of Alignment for tape traveling 1 A 1 A 1 B 1 C 1 C 1 D 1 D 1 B 1 C 1 B 1 C 1 A 1 Tape Interchangeability Alignment Note To do these alignment procedures make sure that the Tracking Control Circ...

Page 52: ...sition of the Audio Control Erase Head Symptom of Misalignment If the Horizontal Position of the Audio Control Erase Head is not properly aligned maximum envelope can not be obtained at the Neutral position of the Tracking Control Circuit 1 Connect the oscilloscope to TP301 C PB and TP303 CTL on the Main CBA Use TP302 RF SW as a trigger 2 Play back the Gray Scale of the Alignment Tape FL8NW and co...

Page 53: ...of Guide Roller 2 Refer to Fig M3 so that the waveform looks like the one shown in Fig M9 4 If the envelope is as shown in Fig M8 adjust the height of Guide Roller 3 Refer to Fig M3 so that the waveform looks like the one shown in Fig M9 5 When Guide Rollers 2 and 3 Refer to Fig M3 are aligned properly there is no envelope drop either at the beginning or end of track as shown in Fig M9 Note Upon c...

Page 54: ...older 3 S 5 8 8 Loading Motor Assembly T DM1 DM7 Desolder LDG Belt 2 S 6 9 9 AC Head Assembly T DM1 DM7 S 7 10 2 Tape Guide Assembly T DM1 DM8 P 2 11 10 Door Opener B T DM1 DM8 L 1 L 2 12 11 Pinch Arm B T DM1 DM8 P 3 13 12 Pinch Arm A Assembly T DM1 DM8 14 14 FE Head T DM1 DM9 S 8 15 15 Prism T DM1 DM9 S 9 16 2 Slider Shaft T DM10 S 10 L 3 17 16 C Drive Lever L T DM10 18 16 C Drive Lever R T DM10 ...

Page 55: ...mation for Installation Refer to Deck Exploded Views for lubrication 33 2 25 M Brake T Assembly T DM1 DM16 P 6 34 2 25 M Brake S Assembly T DM1 DM16 P 7 35 34 Tension Lever Sub Assembly T DM1 DM16 36 35 T Lever Holder T DM1 DM16 L 6 37 33 M Gear T DM1 DM16 C 6 38 2 15 Sensor Gear T DM1 DM16 C 7 39 33 Reel T T DM1 DM16 40 35 Reel S T DM1 DM16 41 31 35 Moving Guide S Preparation T DM1 DM17 42 32 Mov...

Page 56: ...2 4 3 U25NDA 14 13 11 10 12 7 46 8 29 40 38 37 39 42 41 43 9 33 15 35 36 34 Fig DM1 Top View Fig DM2 Bottom View 31 19 32 24 25 27 26 23 28 21 30 20 22 ...

Page 57: ...shing the locking tab as shown in the right slide and pull up the right side on 2 to release Pin A and Pin B from the slots A Then remove Pin C and Pin D on 2 from the slots B as shown 1 2 A Fig DM4 3 4 5 6 S 3 S 2 S 4 P 1 Fig DM5 7 L 8 A View for A S 5 Fig DM6 Desolder from bottom Lead with Blue Stripe Type B L 9 Type A 46 46 47 ...

Page 58: ...of 12 are in the grooves of 28 as shown 11 13 12 A 10 L 1 P 3 Adj Screw P 2 L 2 View for A Fig DM8 14 15 S 9 S 8 Fig DM9 17 16 18 S 10 L 3 After removing the Screw S 10 while pressing the Locking Tab L 3 remove 16 Fig DM10 8 8 9 S 7 S 6 LDG Belt A View for A Fig DM7 Desolder from bottom Lead with White Stripe ...

Page 59: ...2 4 6 U25NDA 19 S 11 Cap Belt Fig DM11 20 C 1 A 21 Portions A Portions A View for A Portions A on 21 must be set in the slot on 20 as shown Fig DM12 ...

Page 60: ...Pin of 30 Position of Mode Lever when installed Pin of 34 Fig DM14 23 P 4 C 3 P 4 28 28 23 When installing 23 install the spring P 4 to 28 as shown in the left figure and then install 23 while pressing the spring P 4 to the direction of the arrow in the left figure and confirming that the position of the spring P 4 is placed as shown in the left figure Pin on bottom of 23 Pin on 22 Position of pin...

Page 61: ...2 4 8 U25NDA 32 30 29 L 5 P 5 31 Refer to the Alignment Section Page 2 4 9 Fig DM15 L 6 P 7 P 6 C 6 34 40 37 35 39 33 36 turn turn turn 38 C 7 Fig DM16 41 42 43 L 7 Fig DM17 45 44 Slide Fig DM18 ...

Page 62: ...o the mechanical or electrical parts Alignment points in Eject Position Alignment 1 Loading Arm S and T Assembly Install Loading Arm S and T Assembly so that their triangle marks point to each other as shown in Fig AL2 Alignment 2 Mode Gear Keeping the two triangles pointing at each other install the Loading Arm T Assembly so that the last tooth of the gear meets the most inside teeth of the Mode ...

Page 63: ...ly Install the Rack Assembly so that the first tooth on the gear of the Rack Assembly meets the first groove on the Cam Gear A as shown in Fig AL4 Cam Gear A First tooth First groove on the Cam Gear A Alignment 3 Top View Gear on Rack Assembly Fig AL4 ...

Page 64: ...TION VIDEO CASSETTE RECORDER EWV401B EWV601B TABLE OF CONTENTS Exploded Views 3 1 1 Mechanical Parts List 3 2 1 Electrical Parts List 3 3 1 Deck Parts List 3 4 1 Sec 3 Exploded views and Parts List Section I Exploded views I Parts List ...

Page 65: ...3 1 1 HB3J1FEX A8 A1X A9 A18 EXPLODED VIEWS Front Panel ...

Page 66: ...rts List for parts with this mark Some Ref Numbers are not in sequence A2 2L011 2L011 2L011 A3 AC001 FUNCTION CBA A10 MAIN CBA SENSOR CBA SENSOR CBA RS501 2B8 A5 2B34 1B1 2L021 2L021 2L021 2L021 2L021 A14 A5 EWV601B EWV601B 2L099 2L031 2L031 ...

Page 67: ...3 1 3 HB340PEX X1 S3 Unit X20 X3 X2 X4 S1 X36 A14 Some Ref Numbers are not in sequence S2 S2 S5 2B36 Packing ...

Page 68: ...ription Part No SLIDUS OIL 150 0VZZ00226 B2 B35 B553 B410 B411 B494 B567 L1053 B74 B10 L1191 B73 B9 B12 B492 B11 B571 B37 B126 L1466 B501 B8 B121 B426 B560 L1450 L1051 L1467 Floil G 374G 0VZZ00109 Blue grease Chassis Assembly Top View Lubricating Point Chassis Assembly Bottom View Lubricating Point L1468 ...

Page 69: ...oint View for A Grease point B516 B559 A B52 B507 B488 B551 B133 B568 B569 B513 B502 B570 B491 B565 B417 L1151 B525 B522 B31 L1406 B148 B521 B520 B416 B518 B564 B585 B487 B573 B574 B499 B27 B508 B414 B505 B572 B558 B557 B3 Mark Description Part No Floil G 374G 0VZZ00109 Blue grease SANKOUL FG84M 0VZZ00062 Yellow grease ...

Page 70: ... L1341 L1341 L1321 B347 L1321 B361 B359 B529 B360 Type B Type A Note There are two different but interchangeable types of CLEANER LEVER B359 in this model and have different combination with B361 Please see Table 1 for details and combination Refer to DECK PARTS LIST section on page 3 4 1 B361 B359 CLEANER LEVER Type Part No Part No A 0VM411114 Not used 0VM304413 0VM305090 B Table 1 B359 and B361 ...

Page 71: ...31UD EMERSON 0VM411684 AC001 AC CORD A0A0280 007 See Electrical Parts List or AC CORD PB8K9F9110A 057 See Electrical Parts List 1B1 A DECK ASSEMBLY CZD011 VM1440 N1440FL 1B1 B DECK ASSEMBLY CZD011 VM1460 N1460FL 2B8 BUSH LED F H3700UD See Electrical Parts List 2B34 SHIELD HEAD HB200UD See Electrical Parts List 2B36 LABEL EAS WAL MART E5662UD 0VM413362 2L011 SCREW P TIGHT 3X10 BIND HEAD GBEP3100 2L...

Page 72: ...ZBFZ104 CHIP CERAMIC CAP F Z 0 1µF 50V or CHD1JZ30F104 CHIP CERAMIC CAP F Z 0 1µF 25V or CHD1EZ30F104 CHIP CERAMIC CAP FZ Z 0 1µF 50V CHD1JZ3FZ104 C070 CERAMIC CAP AX B K 100pF 50V or CCA1JKT0B101 CERAMIC CAP AX B J 100pF 50V CCA1JJT0B101 C253 ELECTROLYTIC CAP 1µF 50V M H7 CE1JMAVSL1R0 C255 CHIPCERAMICCAP MELF FZ0 01µF 16V or CZM1CZB0F103 CHIP CERAMIC CAP MELF F Z 0 01µF 16V CZM1CZ30F103 C256 ELEC...

Page 73: ...CERAMICCAP MELF FZ0 01µF 16V or CZM1CZB0F103 Ref No Mark Description Part No CHIP CERAMIC CAP MELF F Z 0 01µF 16V CZM1CZ30F103 C353 CHIP CERAMIC CAP B K 0 01µF 50V or CHD1JKB0B103 CHIP CERAMIC CAP B K 0 01µF 50V CHD1JK30B103 C354 CHIP CERAMIC CAP CH J 68pF 50V or CHD1JJBCH680 CHIP CERAMIC CAP CG J 68pF 50V or CHD1JJBCG680 CHIP CERAMIC CAP CH J 68pF 50V or CHD1JJ3CH680 CHIP CERAMIC CAP CG J 68pF 50...

Page 74: ...R0 C479 B ELECTROLYTIC CAP 4 7µF 25V M H7 CE1EMAVSL4R7 C480 B ELECTROLYTIC CAP 0 1µF 50V M H7 CE1JMAVSLR10 C481 B ELECTROLYTIC CAP 0 1µF 50V M H7 CE1JMAVSLR10 Ref No Mark Description Part No C482 B ELECTROLYTIC CAP 4 7µF 25V M H7 CE1EMAVSL4R7 C483 B ELECTROLYTIC CAP 22µF 16V M H7 CE1CMAVSL220 C484 B ELECTROLYTIC CAP 4 7µF 25V M H7 CE1EMAVSL4R7 C485 B ELECTROLYTIC CAP 22µF 16V M H7 CE1CMAVSL220 C48...

Page 75: ...MELF SL D 10pF 50V or CZM1JD3SL100 CHIP CERAMIC CAP CH D 10pF 50V or CHD1JDBCH100 CHIP CERAMIC CAP CG D 10pF 50V or CHD1JDBCG100 CHIP CERAMIC CAP CH D 10pF 50V or CHD1JD3CH100 CHIP CERAMIC CAP CG D 10pF 50V CHD1JD3CG100 Ref No Mark Description Part No DIODES D001 RECTIFIER DIODE 1N4005 NDQZ001N4005 D002 RECTIFIER DIODE 1N4005 NDQZ001N4005 D003 RECTIFIER DIODE 1N4005 NDQZ001N4005 D004 RECTIFIER DIO...

Page 76: ...S BUILT IN TRANSISTOR KRA103M or NQSZ0KRA103M RES BUILT IN TRANSISTOR BN1F4M T QQSZ00BN1F4M Q426 CHIP TRANSISTOR RN1511 TE85R or QQ2Z00RN1511 CHIP TRANSISTOR FMG4A T148 QQ2Z000FMG4A Q501 TRANSISTOR KTC3199 BL or NQS50KTC3199 TRANSISTOR 2SC2785 K or QQSK02SC2785 TRANSISTOR 2SC1815 BL TPE2 QQS202SC1815 Q506 PHOTO TRANSISTOR PT204 6B 12 or NPWZT2046B12 PHOTO TRANSISTOR MID 32A22 NPWZM1D32A22 RESISTOR...

Page 77: ... RES 1608 1 10W J 8 2k Ω or RRXAJB5Z0822 CHIP RES 1608 1 10W J 8 2k Ω RRXAJR5Z0822 Ref No Mark Description Part No R341 CHIP RES 1608 1 10W J 4 7k Ω or RRXAJB5Z0472 CHIP RES 1608 1 10W J 4 7k Ω RRXAJR5Z0472 R342 CHIP RES 1608 1 10W J 4 7k Ω or RRXAJB5Z0472 CHIP RES 1608 1 10W J 4 7k Ω RRXAJR5Z0472 R343 CHIP RES 1608 1 10W J 1 8k Ω or RRXAJB5Z0182 CHIP RES 1608 1 10W J 1 8k Ω RRXAJR5Z0182 R391 CARB...

Page 78: ...4 R508 CHIP RES 1608 1 10W J 330k Ω or RRXAJB5Z0334 CHIP RES 1608 1 10W J 330k Ω RRXAJR5Z0334 R509 CHIP RES 1608 1 10W J 68k Ω or RRXAJB5Z0683 Ref No Mark Description Part No CHIP RES 1608 1 10W J 68k Ω RRXAJR5Z0683 R513 CHIP RES 1608 1 10W J 220k Ω or RRXAJB5Z0224 CHIP RES 1608 1 10W J 220k Ω RRXAJR5Z0224 R514 CHIP RES 1608 1 10W J 10k Ω or RRXAJB5Z0103 CHIP RES 1608 1 10W J 10k Ω RRXAJR5Z0103 R5...

Page 79: ...001 SW701 SLIDE SWITCH SK12D07VG5 L A SSS0102LY003 MISCELLANEOUS 2B8 BUSH LED F H3700UD 0VM409508 2B34 SHIELD HEAD HB200UD 0VM412637 A5 A JACK BOARD H36D2PX PHILIPPINE 0VM303637A A5 B JACK BOARD HI FI H36D4PX PHILIPPINE 0VM303638A AC001 AC CORD A0A0280 007 or WAC0172LTE04 Ref No Mark Description Part No AC CORD PB8K9F9110A 057 WAC0172LW008 F001 FUSE SIC 1A 250V UC T or PAGG20CW3102 FUSE 1A 250V or...

Page 80: ...8 1 10W J 3 9k Ω or RRXAJB5Z0392 CHIP RES 1608 1 10W J 3 9k Ω RRXAJR5Z0392 SWITCHES SW645 TACT SWITCH KSM0614B or SST0101HH013 TACT SWITCH SKQSAF001A SST0101AL041 SW647 TACT SWITCH KSM0614B or SST0101HH013 TACT SWITCH SKQSAF001A SST0101AL041 SW652 TACT SWITCH KSM0614B or SST0101HH013 TACT SWITCH SKQSAF001A SST0101AL041 SW653 TACT SWITCH KSM0614B or SST0101HH013 TACT SWITCH SKQSAF001A SST0101AL041 ...

Page 81: ...73 FE HEAD ASSEMBLY MK11 or N9742FEL FE HEAD MK11 MH 131SF11 or DHVEC01Z0005 FE HEAD ASSEMBLY MK11 N9743FEL B74 PRISM MK10 0VM202870 B121 WORM MK11 0VM412544 B126 PULLEY MK11 0VM412543 B133 IDLER ASSEMBLY MK10 0VSA11017 B148 TG CAP MK11 0VM412972 B300 C DRIVE LEVER R MK11 0VM305068 B303 F DOOR OPENER MK11 0VM203299 B347 GUIDE HOLDER A MK10 0VM304920 B354 SLIDER R MK11 0VM101040 B355 SLIDER L MK11 ...

Page 82: ...5075 B570 CAM RACK SPG MK10 0VM411102 B571 P S W F 6 2 55 0 5 0VM402629A B572 P S W CUT 1 6X4 0X0 5T 0VM408485A B573 REEL S MK11 0VM203436 B574 REEL T MK10 0VM202872C B585 PSW 317505 MK11 0VM413663 L1051 SCREW B TIGHT M2 6X6 PAN HEAD GPMB9060 L1053 SCREW S TIGHT M2 6X8 WASHER HEAD GCMS9080 L1151 SCREW SEMS M2 6X4 PAN HEAD CPM39040 L1191 SCREW S TIGHT M2 6X8 WASHER HEAD GCMS9080 L1321 SCREW S TIGHT...

Page 83: ...Printed in Japan 2002 05 01 HO EWV401B EWV601B HB3J1 4J1UD ...

Search results

Summary of Contents for EWV401B

Reviews:

Related manuals for EWV401B

Brands by name

Popular brands

Emerson EWV401B, Service Manual

Search results

Summary of Contents for EWV401B

Reviews:

Related manuals for EWV401B

Brands by name

Popular brands