FUNAI 29C-854 Service Manual Download Page 18

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Power Supply Block Diagram

HG456BLP

1-7-5

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,

REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE.

NOTE :

The voltage for parts in hot circuit is measured using

hot GND as a common terminal.

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 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.

COLD

MAIN CBA

HOT CIRCUIT. BE CAREFUL.

HOT

IC001

ERROR

VOLTAGE DET

Q002

Q003

Q001

F001

L003

LINE

FILTER

BRIDGE

RECTIFIER

D001 - D004

Q004

AC001

T001

P-ON+44V

P-ON+15V

P-ON-H

AL+12V/+20.5V

AL+9V

AL+12V

C-POW-SW

AL+5V

TIMER+5V

P-ON+5V

P-DOWN-L

Q051

Q053

Q054

Q056

Q052

Q057

Q058

T1.6A L 250V

Q055

Q059

SHUNT

REGULATOR

Summary of Contents for 29C-854

Page 1: ...for Servicing I Adjustment Procedures I Schematic Diagrams I CBA s I Exploded views I Parts List Sec 2 Deck Mechanism Section I Standard Maintenance I Alignment for Mechanism I Disassembly Assembly of...

Page 2: ...nstructions 1 6 1 Block Diagrams 1 7 1 Function Indicator Symbols 1 7 6 Schematic Diagrams CBA s and Test Points 1 8 1 Waveforms 1 9 1 Wiring Diagrams 1 10 1 IC Pin Function Descriptions 1 11 1 Lead I...

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: ...te 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...

Page 5: ...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 P...

Page 6: ...chine 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 apply ing the hot air 3 Bottom of the flat pack IC is fixed with glue to the C...

Page 7: ...e flat pack IC When you use solder flux which is applied to all 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...

Page 8: ...nce caused by electro static charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1M that is prop erly grounded to remove any static electricity that may be...

Page 9: ...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 10: ...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 shown...

Page 11: ...1 5 2 HG450DC 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 12: ...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 13: ...l 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 Symptom of M...

Page 14: ...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 SCL...

Page 15: ...DER V OUT1 1 V IN1 1 3 3 V OUT2 1 V IN2 3 1 3 JACK CBA 48 50 52 56 24 50 52 19 20 JK101 V OUT1 V IN1 19 20 JK102 CN151 CN152 CN101 CN102 V OUT2 V IN2 61 63 96 95 93 94 90 89 88 87 CHARA INS CCD 1H DEL...

Page 16: ...MUTE 11 6 PB ON SP LP ON P TUNER IN2 IN1 R ALC DET ALC IC301 AUDIO SIGNAL PROCESS 15 13 17 3 A PB REC CN504 4 A COM 6 AE H 5 AE H FE H AUDIO HEAD AUDIO ERASE HEAD AC HEAD ASSEMBLY FE HEAD 2 FE H 1 FE...

Page 17: ...IN2 R Hi Fi AUDIO SIGNAL PROCESS 9 A IN2 L 8 9 8 A OUT2 R 6 A OUT2 L 11 6 11 A IN1 R 9 A IN1 L 7 9 7 A OUT1 R 5 A OUT1 L 11 5 11 IC451 Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD CYLINDER ASSEMBLY Hi Fi A R...

Page 18: ...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 c...

Page 19: ...nks at 0 8Hz interval RF OUT RF out channel number is displayed on the indicator panel S INH condition All modes Blinks at 0 8Hz interval All lighting mode All characters ON When reel or capstan mecha...

Page 20: ...ror occurs When reel or capstan mechanism is not functioning correctly When tape loading mechanism is not functioning cor rectly When cassette loading mechanism is not functioning correctly When the d...

Page 21: ...umber is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 106 3 Resistor wattages are 1 4W or 1...

Page 22: ...re prepared 2 To maintain 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 manu...

Page 23: ...1 8 3 1 8 4 HG456SCM1 Main 1 8 Schematic Diagram...

Page 24: ...Main 2 8 Sensor Schematic Diagrams 1 8 5 1 8 6 HG456SCM2 D1 D2 D3 D4 a b c d e g f...

Page 25: ...Main 3 8 Schematic Diagram 1 8 7 1 8 8 HG456SCM3...

Page 26: ...Main 4 7 Jack Sub Jack Schematic Diagrams 1 8 9 1 8 10 HG456SCM4...

Page 27: ...st 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 componen...

Page 28: ...1 8 13 1 8 14 HG456SCM6 Main 6 8 Schematic Diagram...

Page 29: ...HG456SCM7 Main 7 8 Schematic Diagram 1 8 15 1 8 16...

Page 30: ...HG456SCM8 Main 8 8 Schematic Diagram 1 8 17 1 8 18...

Page 31: ...1 8 19 1 8 20 HG456SCAFV AFV Schematic Diagram...

Page 32: ...ING THIS TYPE POWER SUPPLY CIRCUIT A VARIABLE ISOLATION TRANSFORMER IS REQUIRED CAUTION For continued protection against fire hazard replace only with the same type fuse CAUTION Fixed voltage or Auto...

Page 33: ...N TROUBLESHOOTING THIS TYPE POWER SUPPLY CIRCUIT A VARIABLE ISOLATION TRANSFORMER IS REQUIRED CAUTION For continued protection against fire hazard replace only with the same type fuse CAUTION Fixed vo...

Page 34: ...1 8 25 1 8 26 Jack CBA Top View Jack CBA Bottom View BHG470F01014C...

Page 35: ...AFV CBA Top View AFV CBA Bottom View Sub Jack CBA Top View Sub Jack CBA Bottom View 1 8 27 1 8 28 BHC400F01093 BHG470F01014B...

Page 36: ...WAVEFORMS U29WFPAL 1 9 1 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 TP502 TP301...

Page 37: ...ERASE HEAD FE HEAD VIDEO R 1 HEAD VIDEO L 1 HEAD SIF 1 TU AUDIO 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 GND 1 V OUT2 2 NU 3 V IN2...

Page 38: ...MP 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 N U Not Used 21 N U Not Used 22 N U Not Used 23 N U Not Used 24...

Page 39: ...U Not Used 75 N U Not Used 76 OUT C CONT Capstan Motor Control Signal 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 Su...

Page 40: ...3M KRC103M KTA1266 GR KTA1281 Y KTC3199 BL GR Y RN2204 TE4 T 2SA1015 GR TPE2 2SA1020 Y 2SC1815 BL TPE2 2SC1815 GR TPE2 2SC1815 Y TPE2 2SC2120 Y TPE2 2SC3266 Y TPE2 KTA1267 GR Y KTC3203 Y KTC3205 Y BR2...

Page 41: ...1 13 1 HG250FEX EXPLODED VIEWS Front Panel A1X...

Page 42: ...this 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 A3 2L042 2L021 2L021...

Page 43: ...PEX Packing X6 S7 Some Ref Numbers are not in sequence X2 X3 X20 X1 X4 S1 Unit S3 A14 S2 S2 SHIPPING LABEL X6 S7 Some Ref Numbers are not in sequence X2 X3 X20C X20B X20A X1 X4 S1 Unit S3 A14 S2 S2 SH...

Page 44: ...0UD See Electrical Parts List 2B9 CUSHION HC460ED 0VM413251 2B18 FIBER TOP CASE HC460ED 0VM412906 2B46 ROHM HOLDER H7770JD See Electrical Parts List 2L011 SCREW P TIGHT 3X10 BIND HEAD GBCP3100 2L012 S...

Page 45: ...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 1000pF 50V CHD1JK30B102 C251 ELECTRO...

Page 46: ...79 ELECTROLYTIC CAP 0 47 F 50V M H7 CE1JMAVSLR47 C381 CHIP CERAMIC CAP 1608 F Z 0 1 F 50V or CHD1JZ30F104 Ref No Description Part No CHIP CERAMIC CAP 1608 F Z 0 1 F 25V or CHD1EZ30F104 CHIP CERAMIC CA...

Page 47: ...0pF 50V CHD1JJ3CG331 C526 CHIP CERAMIC CAP 1608 B K 4700pF 50V CHD1JK30B472 Ref No Description Part No C527 ELECTROLYTIC CAP 22 F 6 3V M H7 CE0KMASSL220 C528 CHIP CERAMIC CAP 1608 B K 0 01 F 50V CHD1J...

Page 48: ...DIODE 1SS133 T 77 QDTZ001SS133 D370 SWITCHING DIODE 1N4148M or NDTZ01N4148M SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D501 SWITCHING DIODE 1N4148M or NDTZ01N4148M Ref No Description Part No SWITCHING D...

Page 49: ...22k RCX4JATZ0223 R008 CARBON RES 1 6W J 100k or RCX6JATZ0104 CARBON RES 1 4W J 100k RCX4JATZ0104 Ref No Description Part No R009 CARBON RES 1 6W G 3 3k or RCX6GATZ0332 CARBON RES 1 4W G 3 3k RCX4GATZ...

Page 50: ...1608 1 10W J 470 RRXAJR5Z0471 R461 CHIP RES 1608 1 10W J 10k RRXAJR5Z0103 Ref No Description Part No R462 CHIP RES 1608 1 10W J 2 7k RRXAJR5Z0272 R463 CHIP RES 1608 1 10W J 8 2k RRXAJR5Z0822 R464 CHI...

Page 51: ...MVP0 SSC0101MCE03 SW507 ROTARY MODE SWITCH SSS 53MD SSR0106KB003 SW509 TACT SWITCH KSM0614B or SST0101HH013 TACT SWITCH SKQSAF001A or SST0101AL041 TACT SWITCH TC 1104 H 9 5 SST0101DNG01 SW510 TACT SWI...

Page 52: ...0680 R119 CHIP RES 1608 1 10W J 75 RRXAJR5Z0750 R120 CARBON RES 1 6W J 680 or RCX6JATZ0681 CARBON RES 1 4W J 680 RCX4JATZ0681 R123 CHIP RES 1608 1 10W J 220 RRXAJR5Z0221 Ref No Description Part No R12...

Page 53: ...G QG B8 or NSZBA0SP3002 IC AUDIO PROCESSOR MSP3417G QG B8 V3 NSZBA0SP3005 COILS L1 INDUCTOR 10 H K 26T LLAXKATTU100 L2 PCB JUMPER D0 6 P5 0 JW5 0T L3 INDUCTOR 18 H K 26T LLAXKATTU180 L4 INDUCTOR 10 H...

Page 54: ...nical Alignment Procedures 2 3 1 Disassembly Assembly Procedures of Deck Mechanism 2 4 1 Alignment Procedures of Mechanism 2 5 1 Deck Exploded Views 2 6 1 Deck Parts List 2 7 1 Sec 2 Deck Mechanism Se...

Page 55: ...DECK ADJUSTMENTS 3 For the reference numbers listed above refer to Deck Exploded Views B73 Recording model only B86 Not used in 2 head model h Hours Cleaning I Replace Deck Periodic Service Schedule...

Page 56: ...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 c...

Page 57: ...Alignment Tape FL6N8 2 Head model FL6NS8 4 Head model Azimuth and X Value Adjustment of ACE Head Adjustment of Envelope Waveform J 2 Guide Roller Adj Screwdriver Available Locally Guide Roller J 3 Mi...

Page 58: ...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 turn...

Page 59: ...here is no slack on the supply and take up side Guide Rollers Use a blank tape Adjust the height of the Guide Rollers Supply side and take up side Use a blank tape Page 2 3 3 Loading Use a blank tape...

Page 60: ...e ACE Head Fig M6 1 B X Value Alignment Purpose To obtain maximum PB FM envelope signal at the pre set position of the Tracking Control Circuit align the Horizontal Position of the ACE Head Symptom of...

Page 61: ...comes as flat as possible To do this adjust ment turn the top of the Guide Roller with the Guide Roller Adj Screwdriver 3 If the envelope is as shown in Fig M7 adjust the height of Guide Roller 2 Refe...

Page 62: ...of pushes to ensure preset position The number of pushes CH UP button to achieve 1 2 level of envelope should match the number of pushes CH DOWN button from center If required redo the X Value Alignme...

Page 63: ...sembly T DM1H DM7H Desolder LDG Belt 2 S 3 9 9 ACE Head Assembly T DM1H DM7H S 4 10 2 Tape Guide Arm Assembly T DM1H DM8H 1 P 2 11 10 C Door Opener T DM1H DM8H 1 S 4A L 4 12 11 Pinch Arm B T DM1H DM8H...

Page 64: ...Arm B DM2H DM14H P 5 34 26 Loading Arm SP Assembly B DM2H DM14H Refer to Alignment Sec Page 2 5 1 35 34 Loading Arm TU Assembly B DM2H DM14H Refer to Alignment Sec Page 2 5 1 36 16 26 M Brake TU Asse...

Page 65: ...2 4 3 U29PHSDA 14 13 11 10 12 7 49 8 32 43 41 40 31 42 45 44 46 9 36 15 38 37 Fig DM1H Top View 34 19 35 25 26 24 23 27 33 20 28 22 Fig DM2H Bottom View...

Page 66: ...Fig DM4H Pull up Slide 1 2 A 3 6 6 L 2 Pin A Hole A Pin B Hole B L 1 First insert 6 diagonally in 3 as shown below Then install 6 in 3 while pushing L 1 in a direction of arrow After installing 6 in 3...

Page 67: ...h White Stripe A 8 Fig DM7H 11 13 12 10 L 4 P 3 P 2 Fig DM8H 1 Pin of 12 Pin of 10 Groove of 27 View for A When reassembling 10 and 12 confirm that pin of 10 and pin of 12 are in the groove of 27 as s...

Page 68: ...to Fig A Fig A 13 12 P 3 Fig B Top view Install pin of 12 in groove of 27 Refer to Fig B 27 Hold 12 and 13 till groove of pin of chassis looks and fit 13 in notch of chassis Then turn a few 13 while...

Page 69: ...2 4 7 U29PHSDA 19 Cap Belt S 8 19 20 Cap Belt A Installation position of Cap Belt View for A Fig DM11H L 6 22 20 C 1 21 27 Pin on 22 Position of pin on 22 turn Fig DM12H...

Page 70: ...47 First groove on 27 Align 26 and 27 as shown Pin of 36 Pin of 33 Position of Mode Lever when installed Pin of 37 Bottom View Installation of 26 When reassembling 27 meet the first groove on 27 to t...

Page 71: ...2 4 9 U29PHSDA 39 L 10 37 P 6 43 38 36 42 40 41 C 6 C 7 turn turn turn Fig DM15H 44 45 46 L 11 Fig DM16H Slide Plate S 11 47 48 Slide Fig DM17H...

Page 72: ...echanical or electrical parts Alignment points in Eject Position Alignment 1 Loading Arm SP and TU Assembly Install Loading Arm SP and TU Assembly so that their triangle marks point to each other as s...

Page 73: ...H D Blue grease SLIDUS OIL 150 Some Ref Numbers are not in sequence B12 B492 B11 B571 B37 B126 B8 B121 L1450 L1450 B86 L1466 B501 Chassis Assembly Top View Lubricating Point Chassis Assembly Bottom Vi...

Page 74: ...low grease B499 B516 B52 B507 B559 B581 B583 B580 B582 A View for A B578 B579 B579 B133 B551 Bottom Side Grease point Some Ref Numbers are not in sequence B488 B491 B513 Bottom Side Grease point L1151...

Page 75: ...anism View 3 Mark Description Floil G 684G or Multemp MH D Blue grease SLIDUS OIL 150 L1341 L1321 B347 L1321 B355 B354 B482 B483 B425 B303 B555 B563 B300 B562 B514 B313 Some Ref Numbers are not in seq...

Page 76: ...R MK12 0VM305719 B499 T LEVER HOLDER MK12 0VM305729 B501 WORM HOLDER MK12 or 0VM203767 WORM HOLDER R MK12 0VM204324 B507 REEL WASHER MK9 5 2 1 0 5 0VM410058 B508 S BRAKE SPRING HI MK12 0VM414899 B513...

Page 77: ...29C 854 HG456FD 2004 11 25...

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