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MAIN SECTION

VIDEO CASSETTE RECORDER

29D-850

TABLE OF CONTENTS

Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-1-1

Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-2-1

Standard Notes for Servicing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3-1

Preparation for Servicing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-4-1

Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-5-1

Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-6-1  

How to Initialize the VCR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-7-1

Function Indicator Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-8-1

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-9-1

Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-10-1

Waveforms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-11-1

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-12-1

IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-13-1

Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-14-1

Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-15-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-16-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-17-1

Main Section

I

 Specifications

I

 Preparation for Servicing

I

 Adjustment Procedures

I

 Schematic Diagrams

I

 CBA’s

I

 Exploded Views

I

 Parts List

Summary of Contents for 29D-850

Page 1: ...PAL Main Section I Specifications I Preparation 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 Me...

Page 2: ...6 1 How to Initialize the VCR 1 7 1 Function Indicator Symbols 1 8 1 Block Diagrams 1 9 1 Schematic Diagrams CBA s and Test Points 1 10 1 Waveforms 1 11 1 Wiring Diagrams 1 12 1 IC Pin Function Descri...

Page 3: ...urst 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 0 3 0 5...

Page 4: ...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 5: ...F 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...

Page 6: ...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 pac...

Page 7: ...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 8: ...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 9: ...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 10: ...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 TP507 S INH to GND This will stop the function of T...

Page 11: ...ul not to break them 1 Remove five Screws S 2 three Screws S 3 and Screw S 4 Then slowly lift the VCR Chassis Unit Deck Assembly Jack CBA and Main CBA up 2 When reassembling solder wire jumpers as sho...

Page 12: ...1 5 2 HK412DC Fig D2 L 2 L 1 2 Front Assembly L 2 Fig D3 S 2 S 2 S 4 S 2 S 2 S 3 S 3 S 3 3 VCR Chassis Unit Fig D4 S 5 4 Jack CBA Desolder...

Page 13: ...r Assembly From ACE Head Assembly Lead with white stripe Lead with blue stripe Desolder from bottom Lead with blue stripe From Capstan Motor Assembly Lead connections of Deck Assembly and Main CBA Pri...

Page 14: ...cope Dual trace with 10 1 probe V Range 0 001 50V Div F Range DC AC 20MHz 2 Alignment Tape FL6A Head Switching Position Adjustment Purpose To determine the Head Switching position during playback Symp...

Page 15: ...no timer programming is set If not reset all timer programming 2 Turn the power off 3 Press the STOP EJECT button and CHANNEL K button on the unit simultaneously for at least 2 seconds Upon completio...

Page 16: ...tv screen when you press the operation buttons Display panel MODE INDICATOR ACTIVE POWER ON PWR ON CASSETTE IN CASSETTE OUT ON OFF CLOCK 88 88 ON REC REC ON REC PAUSE REC Blinks at 0 8Hz interval T R...

Page 17: ...tion Cause 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 mechanism is not functioning correctly A T is d...

Page 18: ...EO BLOCK FROM TO Hi Fi AUDIO BLOCK TO AUDIO BLOCK SDA SDA SCL SCL TU701 TUNER UNIT IC503 MEMORY 72 32 19 83 IIC BUS SCL D V SYNC D REC H RF SW H A SW C ROTA IIC BUS SDA H A COMP V ENV C SYNC IIC BUS S...

Page 19: ...OCESS IC501 OSD REC VIDEO SIGNAL PB VIDEO SIGNAL MODE SP REC SERIAL DECORDER VIDEO OUT1 1 VIDEO IN1 1 3 3 VIDEO OUT2 1 VIDEO IN2 3 1 3 JACK CBA 48 50 52 54 56 24 6 50 55 52 19 20 JK101 VIDEO OUT1 VIDE...

Page 20: ...L MUTE 11 6 PB ON SP LP ON P TUNER IN2 IN1 R ALC DET ALC IC301 AUDIO SIGNAL PROCESS 15 13 17 3 AUDIO PB REC CN504 4 A COM 6 AE H 5 AE H FE H AUDIO HEAD AUDIO ERASE HEAD ACE HEAD ASSEMBLY FE HEAD 2 FE...

Page 21: ...DIO SIGNAL PROCESS 9 8 9 8 6 11 6 11 AUDIO R IN1 9 AUDIO L IN1 7 9 7 AUDIO R OUT1 5 AUDIO L OUT1 AUDIO R IN2 AUDIO L IN2 AUDIO R OUT2 AUDIO L OUT2 11 5 11 IC451 Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD C...

Page 22: ...7 18 T1 6A L 250V Q055 Q059 SHUNT REGULATOR CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F001 is blown check to see that all components in th...

Page 23: ...itute 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 draw in...

Page 24: ...n original function and reliability 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 Mode SP REC 5 Volta...

Page 25: ...1 10 3 HK4F8SCM1 Main 1 6 Schematic Diagram...

Page 26: ...1 10 4 HK4F8SCM2 D1 D2 D3 D4 a b c d e f g c d e f g c d e f g c d e f g h j i a b c d e f g a b a b a b FP562 MATRIX CHART D1 D2 D3 D4 a b c d e g f Main 2 6 Sensor Schematic Diagram...

Page 27: ...1 10 5 HK4F8SCM3 Main 3 6 Schematic Diagram...

Page 28: ...1 10 6 HK4F8SCM4 Main 4 6 Jack Sub Jack Schematic Diagram...

Page 29: ...fire hazard replace only with the same type fuse CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F001 is blown check to see that all components...

Page 30: ...1 10 8 HK4F8SCM6 Main 6 6 Schematic Diagram...

Page 31: ...1 10 9 HK4F8SCAFV AFV Schematic Diagram...

Page 32: ...r Auto voltage selectable power supply circuit is used in this unit If Main Fuse F001 is blown check to see that all components in the power supply circuit are not defective before you connect the AC...

Page 33: ...s unit If Main Fuse F001 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 compo...

Page 34: ...1 10 12 Jack CBA Top View Jack CBA Bottom View BHG470F01014C...

Page 35: ...1 10 13 AFV CBA Top View AFV CBA Bottom View Sub Jack CBA Top View Sub Jack CBA Bottom View BHC400F01093 BHG470F01014B...

Page 36: ...OR BAR SIGNAL WITH 1KHz AUDIO SIGNAL WF1 WF3 WF3 V OUT E E 10 s 50mV x 10 J23 WF3 UPPER WF1 LOWER V OUT 0 1V x 10 RF SW 0 5V x 10 50 s J23 TP502 WF2 C PB 10mV x 10 RF SW 0 5V x 10 5ms UPPER LOWER WF1...

Page 37: ...5 6 7 8 9 10 11 CN151 CN101 FULL ERASE HEAD FE HEAD VIDEO R 1 HEAD VIDEO L 1 HEAD SIF 1 NU 2 TU AUDIO R 3 GND 4 TU AUDIO L 5 P ON 5V 6 P ON 5V 7 IIC BUS SCL 8 IIC BUS SDA 9 1 2 3 4 5 6 7 8 9 CN701 CN1...

Page 38: ...H A COMP Head Amp Comparator Signal H L 18 OUT RF SW Video Head Switching Pulse H L 19 OUT Hi Fi H SW Hi Fi Audio Head Switching Pulse H L 20 NU Not Used 21 NU Not Used 22 NU Not Used 23 NU Not Used 2...

Page 39: ...al PWM 77 OUT D CONT Drum Motor Control Signal PWM 78 OUT C F R Capstan Motor FWD REV Control Signal FWD L REV H H L 79 IN S REEL Supply Reel Rotation Signal PULSE 80 IN T REEL Take Up Reel Rotation S...

Page 40: ...TE2 F T 2SA1020 Y 2SA1020 Y TE6 F M 2SC1815 BL TPE2 2SC1815 BL TE2 F T 2SC1815 GR TPE2 2SC1815 GR TE2 F T 2SC1815 Y TPE2 2SC1815 Y TE2 F T 2SC2120 Y TPE2 2SC2120 Y TE2 F T 2SC3266 Y TPE2 2SC3266 Y TP...

Page 41: ...1 15 1 HK4F5FEX EXPLODED VIEWS Front Panel A1X...

Page 42: ...his mark Some Ref Numbers are not in sequence 2B18 A2 2L011 2L011 2L011 2L011 2L011 2B9 2B9 2L022 2L022 2L012 JACK CBA A5 2L041 A10 2L031 2L099 2L041 2B7 SENSOR CBA 2B8 2B46 A7 A21 A3 2L042 2L021 2L02...

Page 43: ...1 15 3 HK4F8PEX Packing Some Ref Numbers are not in sequence X3 X20A X20B X20C X20D X20E X20F X1 X4 S1 Unit S3 A14 S2 S2 X2...

Page 44: ...BIND HEAD GBCP3100 2L012 SCREW P TIGHT 3X10 BIND HEAD GBCP3100 2L021 SCREW P TIGHT M3X10 WASHER HEAD or GCMP3100 SCREW P TIGHT M3 10 WASHERHEAD GCJP3100 2L022 SCREW P TIGHT M3X10 WASHER HEAD See Elec...

Page 45: ...50V or CHD1JZ30F104 CHIP CERAMIC CAP 1608 F Z 0 1 F 25V or CHD1EZ30F104 CHIP CERAMIC CAP FZ Z 0 1 F 50V CHD1JZ3FZ104 C157 ELECTROLYTIC CAP 1 F 50V M H7 CE1JMAVSL1R0 C158 CHIP CERAMIC CAP 1608 B K 100...

Page 46: ...RAMIC CAP 1608 F Z 0 1 F 25V or CHD1EZ30F104 Ref No Description Part No CHIP CERAMIC CAP FZ Z 0 1 F 50V CHD1JZ3FZ104 C428 CHIP CERAMIC CAP CH J 220pF 50V or CHD1JJ3CH221 CHIP CERAMIC CAP CG J 220pF 50...

Page 47: ...or CHD1JZ30F104 CHIP CERAMIC CAP 1608 F Z 0 1 F 25V or CHD1EZ30F104 CHIP CERAMIC CAP FZ Z 0 1 F 50V CHD1JZ3FZ104 C708 CHIP CERAMIC CAP 1608 B K 0 01 F 50V CHD1JK30B103 C716 CHIP CERAMIC CAP F Z 0 22 F...

Page 48: ...XKATTU150 L851 INDUCTOR 1 8 H K 26T LLAXKATTU1R8 TRANSISTORS Q001 FET 2SK3566 QFWZ02SK3566 Q002 TRANSISTOR KTC3199 BL AT P or NQS5KTC3199P TRANSISTOR 2SC1815 BL TE2 F T or QQS22SC1815F TRANSISTOR KTC3...

Page 49: ...RXAJR5Z0472 R023 CHIP RES 1608 1 10W F 2 2k or RRXAFR5H0222 CHIP RES 1608 1 10W F 2 2k RRXAFR5Z0222 Ref No Description Part No R024 CHIP RES 1608 1 10W J 33k RRXAJR5Z0333 R025 CHIP RES 1608 1 10W F 3...

Page 50: ...1608 1 10W J 10k RRXAJR5Z0103 R509 CHIP RES 1608 1 10W J 4 7k RRXAJR5Z0472 R510 CHIP RES 1608 1 10W J 10k RRXAJR5Z0103 Ref No Description Part No R511 CHIP RES 1608 1 10W J 100k RRXAJR5Z0104 R513 CHI...

Page 51: ...P O T VZ067TL1 B104 PB F VRCB104HH014 X301 XTAL 4 433619MHz or FXC445LLN001 XTAL 4 433619MHz or 1811388 QUARTZ CRYSTAL 4 433619MHz FXC445LCHE01 X501 XTAL 12 000MHz or FXD126LDS001 QUARTS CRYSTAL 12 00...

Page 52: ...HD1EZ30F104 CHIP CERAMIC CAP FZ Z 0 1 F 50V CHD1JZ3FZ104 C4 CHIP CERAMIC CAP CH J 56pF 50V or CHD1JJ3CH560 CHIP CERAMIC CAP CG J 56pF 50V CHD1JJ3CG560 C5 CHIP CERAMIC CAP 1608 CH J 22pF 50V or CHD1JJ3...

Page 53: ...29D 850 HK4F8ED 2005 09 02...

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