Toshiba w425 Service Manual Download Page 35

Page: 35 / 50

CAUTION: DIGITAL TRANSISTOR

Q4003

KRA103SRTK

CP4001
TOC-C09X-A1

CP4002
IMSA-9604S-06Z13

CP4003
TMC-T02X-E1

DURING PLAYBACK

MEASURED WITH THE DIGITAL TESTER

NOTE:

THE DC VOLTAGE AT EACH PART WAS

OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME

C4009

6.3V

C4045

100

6.3V

C4034

4.7

25V

C4014

6.3V

C4012

6.3V

C4004

220

6.3V

C4035

50V

C4025

220

6.3V

C4027

6.3V

C4031

50V

T4001

1626009

COIL,BIAS OSC

C4013

0.1

C4059

0.1 F

C4016_1

0.068

C4019

0.047

C4015

0.047

C4066

0.022

C4064

0.022

C4054

0.1

C4029

0.01 B

C4074

0.001

C4028

0.1

C4020

0.1

C4021

0.1

C4022

0.1

C4036

390P

C4037

0.1

C4002

0.022

100V

MKT

C4033

0.0012

C4069

0.1

C4006

0.015

C4005

0.01

C4061

0.01

C4070

0.1

C4060

0.01

C4044

0.1

C4038

180P

C4032

0.0027

C4057

33P

C4076

22P

R4005

47K 1/4W

R4004

15 1/4W

R4044

22K

R4046

22K

R4018

8.2K

R4019

330K

R4017

8.2K

R4053

10K

1/4W

R4020

180

1/4W

R4025

1.5K

R4001

560

R4021

18K

R4023

15K

R4038

680K

R4037

R4033

2.2K

1/4W

R4010

3.3K

R4014

4.7K

R4016

5.6K

R4013

4.7K

R4043

3.3K

R4011

22K

R4006

47K

R4007

47K

R4035

100K

R4034

82K

R4002

10K

R4003

10K

R4024

6.8K

R4047

12K

1/4W

R4012

R4045

12K

1/4W

R4042

1.5K

R4039

8.2K

R4036

1.8K

R4041

1.8K

R4022

820

C4058

6.3V

C4046

50V

C4062

50V

C4065

50V

C4051

6.3V

C4050

0.22

50V

C4030

16V

C4063

16V

C4010

6.3V

C4067

50V

C4052

50V

C4048

50V

C4049

50V

C4053

50V

Q4001

KTC3198

AUDIO
PB SW

Q4002

KTC3198

AUDIO
PB SW

Q4006

KTC3203_Y

BIAS OSC

Q4012

2SC2412K

BUFFER

Q4011

2SC2412K

BUFFER

W865

W801

TP4001

V.ENV

Q4010

2SA1037AK

BUFFER

Q4005

KTA1266

BIAS CTL

X4001

100CT3R508

L4003

100uH

0305

L4001

22uH 0305

IC4001

LA71205M-MPB

Y/C/AUDIO/CCD/HEAD AMP IC

L4004

22uH

L4005

47uH

L4006

47uH

RECORD COLOR SIGNAL
RECORD LUMINANCE SIGNAL

PLAYBACK COLOR SIGNAL
PLAYBACK LUMINANCE SIGNAL

AUDIO SIGNAL(PB)

AUDIO SIGNAL(REC)

TUNER VIDEO SIGNAL

H.SW

ENV.DET

COMP

H.AMP_SW

C.ROTARY

Y/C_CS

IIC_DATA

IIC_CLK

P.CON+5V

AUDIO_MUTE-H

FSC

P.CON+5V

REAR_A_IN

GND

FSC

FRONT_V_IN

FRONT_A_IN-L

TUNER_V

TUNER_A

FROM_NORMAL_A

REAR_V_IN

4FSC

IIC_CLK

IIC_DATA

Y/C_CS

DUMMY_V.SYNC

V.REC_ST-H

C.ROTARY

AUDIO_MUTE-H

OSD_V

CTL-

P.CON+5V

CTL+

H.AMP_SW

TUNER_V

COMP

ENV.DET

H.SW

FRONT_V_IN

C.SYNC

REAR_V_IN

OSD_V

TUNER_A

C.SYNC

P.CON+5V

DUMMY_V.SYNC

FRONT_A_IN-L

P.CON+5V

REAR_A_IN

P.CON+5V

V.REC_ST-H

CTL+

CTL-

FROM_NORMAL_A

GND

HOT

G-2

G-1

PCB010
VMA248

FROM POWER

FROM/TO TUNER

FROM/TO SYSCON/SERVO

4.9

3.2

Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM

(SYSCON PCB)

FE HEAD(GND)

FE HEAD(HOT)

TO FE HEAD

FROM/TO HEAD AUDIO CONTROL

AUDIO PB

AE HEAD(+)

CTL-

CTL+

AUDIO REC

AE HEAD(-)

0.7

5.3

5.2

FROM/TO CYL

EP/LP-CH2 (L)

EP/LP-CH1 (R)

SP-CH2 (L)

SP-CH1 (R)

EP/LP COM

5.2

Vref

2.3V

SP,LP

AMP

ALC

A-VCC

1
2
3

A-GND

PRE GND

REC:LP<EP

PB:EP

DET

PB,EE

VREF

REC
AMP

MUTE

AUTO
BIAS

LINE

AMP

REC

FM-EQ

AGC

VHS

SOPB

FM EQ

S-EQ

MAIN

DE-EM

LIM

DOUBBLE

DEM

SUB

LPF

DET

EMPHA

FIL

MAIN 4.7K

Y-VCC

V.SYNC

SEP

6DB

QV/QH

AGC

TC2

BAL

TC1

REG

2
3

VDD

4Fsc

CLOCK

PLL

TIMMING

OUT

DRIVER

AUTO-BIAS

CLAMP

CCD

VSS

OUT

VCA

CLAMP

VCP

ALWAYS

VX01

320FH

VCO

SLD

PHASE

fo-ADJ

PHASE

Q-ADJ

AGC

FIL

Y-GND

FBC

1/2

VIDEO

AGC

Y/C

MIX

NC1

N.L.

DEEM

Y-LPF

CLAMP

DETAIL

ENH

EMPHA

MOD

NORMAL

R-EQ
TEST

YNR/COMB

3.58M

BPF1

B.D

AMP

CNC

BGA

AFTER

BEFORE

3.58M

BPF2

B-UP

AMP

Main
CONV

ACC
AMP

DET

ACC

C-LPF

4.21M

BPF

Sub

CONV

LPF

REC

AFC

APC

REC
APC

C-VCC

SERAIL

DECODER

C-GND

C-ROT
RF-SW

AUDIO

MUTE

HA SW

ENV
DET

ACC
DET

HA VCC

COMPOUT

KILL

DET

CHROMA

GND

PB-C

VSS

SYNC

2.2

1.6

3.8

4.9

3.3

3.9

2.1

2.9

1.6

1.8

1.9

1.8

5.0

1.8

1.6

1.8

2.3

4.9

2.3

2.1

3.2

4.4

5.0

4.1

3.6

1.6

2.1

2.3

4.1

2.6

3.3

2.6

3.2

2.5

1.6

0.8

2.2

1.2

4.9

3.2

4.9

5.2

4.8

2.1

4.1

3.3

3.2

2.3

0.8

4.8

1.1

1.4

2.0

0 2.6

2.6

0.2

2.8

SP_COM

Summary of Contents for w425

Page 1: ...SERVICE MANUAL VIDEO CASSETTE RECORDER FILE NO 140 200123 W425 ...

Page 2: ...replaced should be used the part which has the same character Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark the designated parts must be used 1 KEEP THE NOTICES 3 PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety or wh...

Page 3: ... C AUDIO CCD HEAD AMP SYSTEM CONTROL SERVO TUNER OPERATION POWER PRINTED CIRCUIT BOARDS SYSCON OPERATION SCHEMATIC DIAGRAMS Y C AUDIO CCD HEAD AMP SYSTEM CONTROL SERVO POWER OPERATION TUNER INTERCONNECTION DIAGRAM WAVEFORMS MECHANICAL EXPLODED VIEW CHASSIS EXPLODED VIEWS MECHANICAL REPLACEMENT PARTS LIST CHASSIS REPLACEMENT PARTS LIST ELECTRICAL REPLACEMENT PARTS LIST CONTENTS A1 1 A1 1 A2 1 A3 1 ...

Page 4: ...d FS 41 25MHz FP FS 4 50MHz Preset CH No RF Converter Output Yes Channel 3 or 4 ch Level Impedance 66dBu 75ohm Sound Selector No Stereo Dual TV Sound No G 3 Power Power Source AC 120V 60Hz DC Power Consumption Power On at AC 8W at 120V 60Hz Stand by at AC 1 8W at 120V 60Hz Per Year kWh Year Protector Power Fuse Yes Dew Sensor No G 4 Regulation Safety UL Radiation FCC G 5 Temperature Operation 5oC ...

Page 5: ...mbol Mark Yes CH AV Yes Clock Yes Repeat Yes Pin Code No Tape Counter Yes Index No Hotel Lock No Tape Speed Yes ATR Manual Tracking Yes Hi Fi No S Repeat SR R SR Play No VPS No PDC No G 9 OSD Language English French Spanish G 10 Clock Timer Calendar 1990 1 1 2081 12 31 and Timer Timer Events 8 prog 1 month Back up One Touch Recording Max Time 5 Hours OTPB Valid Time No Timer Back up at Power Off M...

Page 6: ...et Tracking Yes Set Tracking Yes Menu Yes Enter Yes Cancel Yes Call Yes TV VCR Yes Sleep Timer No Muting No Clock Counter No Zero Return No CM Skip No Audio Select No G 13 Features Auto Head Cleaning No Auto Tracking Yes Index Search No HQ VHS Standard High Quality Yes Auto Power On Auto Play Auto Rewind Auto Eject Yes Auto Power Off Yes Forward Reverse Picture Search Yes VIDEO PLUS SHOWVIEW G COD...

Page 7: ...Cord No Registration Card Yes E S P Sheet Yes Tape Rewinder Buyer Supply No 300 ohm to 75 ohm Antenna Adapter No G 15 Interface Switch Front Power Yes Play Yes Pause Still No System Select No One Touch Playback No Channel Up Yes Channel Down Yes F FWD Cue Yes Eject Stop Yes Main Power SW No Volume Up No Volume Down No Rew Rev Yes Rec OTR Yes Rear RF Output SW No Indicator Power Yes RED Stand by No...

Page 8: ...on of Origin Gift Box Yes Material Single Full Color Dimensions W x D x H mm 420x291x160 Design As Per BUYER s Description of Origin Yes Drop Test Natural Dropping At 1Corner 3Edges 6Surfaces Height cm 80 Container Stuffing 40 container 3 136Sets G 19 Cabinet Material Cabinet Front PS 94V2 DECABROM A3 5 ...

Page 9: ... 1 2 Open Flap to 90 and flex in direction of arrow A at the same time slide in direction of arrow B Then lift in direction of arrow C A C B Flap Fig 1 2 2 2 1 2 Fig 1 1 B A 1 1 1 Top Cabinet 2 2 2 2 3 3 3 3 Operation PCB Front Cabinet 1 3 DECK CHASSIS Refer to Fig 1 3 Remove the 3 screws 1 Disconnect the following connectors CP1001 CP4001 CP4002 and CP4003 Remove the Deck Chassis in the direction...

Page 10: ...cker R 1 2 3 Link Unit NOTE 1 2 In case of the Locker R installation check if the two positions of Fig 2 3 B are correctly locked When you install the Cassette Side R be sure to move the Locker R after installing 2 4 LINK UNIT Refer to Fig 2 4 Set the Link Unit to the Eject position Unlock the support 1 Remove the A side of the Link Unit first then remove the B side 1 2 3 Fig 2 4 2 5 LINK LEVER FL...

Page 11: ...oading Motor 1 Main Chassis Worm NOTE 1 2 In case of the Worm installation check if the value of the Fig 2 6 B is correct In case of the Loading Motor installation hook the wire on the Cassette Opener as shown Fig 2 6 C Fig 2 6 B 19 2 0 1mm Safety surface for pressing of the insert Fig 2 7 B Fig 2 7 D Tension Band Tension Spring 1 2 4 Tension Band Tension Arm Ass y 3 1 Tension Holder Tension Conne...

Page 12: ...se gloves Refer to Fig 2 9 A Do not adhere the stains on it When you install the reel clean the shaft and grease it If you do not grease noise may be heard in FF REW mode After installing the reel adjust the height of the reel Refer to MECHANICAL ADJUSTMENT 1 2 3 4 5 6 Fig 2 9 A S Reel 1 A T Reel A 1 Idler Arm Ass y Idler Gear NOTE 1 2 In case of the S Reel and T Reel installation check if the cor...

Page 13: ...crew 3 1 2 3 2 10 CASSETTE OPENER PINCH ROLLER BLOCK P5 ARM ASS Y Refer to Fig 2 10 A Unlock the support 1 and remove the Cassette Opener Remove the Pinch Roller Block and P5 Arm Ass y 1 2 Fig 2 10 A 1 Cassette Opener P5 Arm Ass y Pinch Roller Block Main Chassis NOTE Do not touch the Pinch Roller Use gloves In case of the Pinch Roller Block and the Pinch Roller Cam installation install correctly a...

Page 14: ...he Main Loading Gear Remove the Main Rod Tension Lever Loading Arm S Unit and Loading Arm T Unit 1 Main Rod Main Loading Gear Tension Lever Loading Arm T Unit Loading Arm S Unit Fig 2 16 A 2 14 CAPSTAN DD UNIT Refer to Fig 2 14 A Remove the Capstan Belt Remove the 3 screws 1 Remove the Capstan DD Unit 1 2 3 Screw Torque 4 0 5kgf cm Capstan DD Unit Capstan Belt 1 1 1 In case of the Capstan DD Unit ...

Page 15: ...r Fig 2 18 B Fig 2 18 C Cassette Guide Post Cassette Guide Post 2 17 Remove the Polyslider Washer 1 Remove the Clutch Ass y and Ring Spring Remove the Clutch Lever Remove the Coupling Gear Coupling Spring and Clutch Gear 1 2 3 4 Fig 2 17 A NOTE 1 When you install the Loading Arm S Unit Loading Arm T Unit and Main Loading Gear align each marker Refer to Fig 2 16 B Fig 2 16 B Loading Arm T Unit Main...

Page 16: ...using a blower type IC desoldering machine Refer to Fig 3 2 2 Fig 3 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering the IC leads completely When IC starts moving back and forth easily after desoldering completely pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering...

Page 17: ...3 8 Thin tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So be always sure to replace the IC in this case Finally confirm the soldering status on four sides of the IC using a magnifying glass Confirm that no abnormality is found on the soldering position and insta...

Page 18: ...lop Frequency Generator Front Loading Switch Frequency Modulation Frequency Sub Carrier Forward Generator Ground High Pass Filter I K L M N O P R S H SW Hz IC IF IND INV KIL L LED LIMIT AMP LM LDM LP L P F LUMI M MAX MINI MIX MM MOD MPX MS SW NC NR OSC OPE PB PB CTL PB C PB Y PCB P CON PD PG P P R REC REC C REC Y REEL BRK REEL S REF REG REW REV RVS RF RMC RY S CLK S COM S DATA SEG SEL SENS SER SI ...

Page 19: ...tor Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse Voltage Display Video Playback Variable Resistor Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source Vertical Synchronization Voltage Tuning Crystal Luminance Chrominance C1 2 ...

Page 20: ... position Refer to the MECHANICAL ADJUSTMENT GUIDE ROLLER and ELECTRICAL ADJUSTMENT PG SHIFTER Press the ATR button on the remote control for more than 2 seconds during PLAY Make the short circuit between the test point of SERVICE and the GND The BOT EOT and the Reel Sensor do not work and the deck can be operated without a cassette tape Refer to the PREPARATION FOR SERVICING ...

Page 21: ...gure below 2 TAPE RUNNING SYSTEM When cleaning the tape transport system use the gauze moistened with isopropyl alcohol 3 CYLINDER Wrap a piece of chamois around your finger Dip it in isopropyl alcohol Hold it to the cylinder head softly Turn the cylinder head counterclockwise to clean it in the direction of the arrow Refer to the figure below NOTE Do not exert force against the cylinder head Do n...

Page 22: ...f cm 60 600gf cm JG154 Cable VTR cleaning kit VTR lubrication kit Grease JG002B JG002E JG002F JG153 X Value Adjustment Screwdriver JG022 Master Plane JG024A Reel Disk Height Adjustment Jig Alignment Tape ST N5 ST NF Remarks Part No Ref No Parts Name JG002B JG002E JG002F APJG002B00 APJG002E00 APJG002F00 Adapter Dial Torque Gauge 10 90gf cm Dial Torque Gauge 60 600gf cm VSR Torque Brake Torque S Ree...

Page 23: ...es 20 2gf in the beginning of playback 1 2 USING A CASSETTE TYPE TORQUE TAPE KT 300NR 1 2 3 After confirmation and adjustment of Tension Post position Refer to item 1 2 load the cassette type torque tape KT 300NR and set to the PLAY mode Confirm that the right meter of the torque tape indicates 50 90gf cm during playback in SP mode Confirm that the left meter of the torque tape indicates 25 40gf c...

Page 24: ...if you press the Tracking Button to move the envelope The envelope waveform will begin to decrease when you press the Tracking Button Adjust the PG shifter during playback Refer to the ELECTRICAL ADJUSTMENTS 1 2 3 4 5 6 7 NOTE After adjustment confirm and adjust A C head Refer to item 2 2 CH 2 SW Pulse TP1002 CH 1 Track CH 2 Track CH 1 Envelope TP4001 Fig 2 1 A Entrance Exit Max A B 3 2 A Max B Fi...

Page 25: ... is appeared then adjust the a P4 Cap Fig 2 2 A Audio Control Head 1 3 2 Fig 2 2 B Audio Control Head Fig 2 2 C TAPE RUNNING ADJUSTMENT X VALUE ADJUSTMENT Confirm and adjust the height of the Reel Disk Refer to item 1 1 Confirm and adjust the position of the Tension Post Refer to item 1 2 Adjust the Guide Roller Refer to item 2 1 Confirm and adjust the Audio Control Head Refer to item 2 2 Connect ...

Page 26: ...USTMENT PARTS LOCATION GUIDE 5 6 7 8 9 10 1 2 3 4 1 Tension Connect 2 Tension Arm 3 Guide Roller 4 Audio Control Head 5 X value adjustment driver hole 6 7 8 9 10 P4 Post T Brake Spring T Reel S Reel Adjusting section for the Tension Arm position ...

Page 27: ...ilicon grease Old grease may cause damages to the IC and Transistor 1 1 PG SHIFTER CONDITIONS MODE PLAYBACK Input Signal Alignment Tape INSTRUCTIONS Connect CH 1 on the oscilloscope to TP1002 and CH 2 to TP4201 Playback the alignment tape Press and hold the Tracking Auto button on the remote control more than 2 seconds to set tracking to center Adjust the VR1001 until the waveforms of the oscillos...

Page 28: ...D3 2 2 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE SYSCON PCB T501 TP4001 TU6001 J4201 TP1002 TP1001 J4203 J4205 TP4201 VR1001 J4202 ELECTRICAL ADJUSTMENTS ...

Page 29: ... 1 2 FBC Chara INS 6dB P R P R V AGC T4001 CLAMP EQ AMP LINE AMP MUTE ALC Y C_CS IIC_DATA IIC_CLK H AMP_SW C ROTARY H SW ENV DET COMP DUMMY_V SYNC OSD_V FRONT_V_IN TUNER_V FRONT_A_IN_L FROM_NORMAL_A 6 2 3 1 5 Q4005 BIAS CTL 11 4 P CON 5V H AMP SW AUDIO MUTE C ROT RF SW IN ENV DET CONP OUT Q4006 BIAS OSC Q4003 SW Q4001 Q4002 AUDIO PB SW COIL BIAS OSC X4001 100CT3R508 VX01 50 49 PULL 41 Q4012 BUFFER...

Page 30: ...4 EOT H 12 P CON 5V BOT SENSOR Q1008 H SW 24 C SYNC 54 H SW C SYNC POWER AFT S CURVE TUNER VCR H TV VCR 84 CV OUT 45 11 AFT S CURVE TV VCR VIDEO_OUT IIC_CLK IIC_DATA OSC1 72 TAB SW 80 X1001 1002T01003 OSC 2 73 SW1001 AT 5V M CON RESET IC1003 R3111N311A C SYSTEM RESET IC 1 2 16 TUNER L 58 TUNER L RF_CH_SW 62 RF_CH_SW AT 12 6V P CON 5V POWER ON H 64 POWER FAIL H 89 POWER_ON H POWER_FAIL LDM_CTL 1 2 ...

Page 31: ... Q4201 BUFFER VIDEO_OUT SYSCON SERVO 2 6 TV VCR P CON 12V FRONT AV JACK VIDEO J4203 2 FRONT_V_IN TUNER_V Y C AUIO CCD HEAD AMP TUNER_A 11 IIC_CLK 12 IIC_DATA 23 24 21 AFT S CURVE 15 FSC 2 AUDIO L J4205 SYSCON SERVO 3 RF_CH_SW 3 REAR IN JACK J4202 2 3 REAR_V_IN REAR_A_IN E 5 E 6 ...

Page 32: ...SW Q515 IC511 LTV 817M VB PHOTO COUPLER Q506 P CON 5V P CON 5V SW POWER_ON H Q508 P ON SW AT 5 2V 12 6V 32V IC505 LTV 817M VB PHOTO COUPLER POWER_FAIL PLAY FF CUE REW REV POWER REC OTR STOP EJECT CH DOWN CH UP KEY A KEY B KEY A KEY B 3 2 CP601 CP651 3 2 OS651 REM_IN 1 SYSCON TSERVO 3 1G TV VCR_LED 2G T_REC_LED 3G REC_LED T_REC LED D665 TV VCR LED D664 REC LED D666 SYSCON SERVO E 7 E 8 ...

Page 33: ...36 W047 R4053 C4201 W064 TU6001 W067 W141 SW1001 W094 W024 W113 W115 TP1001 W071 W042 W043 W041 W092 W055 W040 W053 R4047 W061 W085 W088 W087 W051 W048 W065 W027 W022 W021 W057 W056 W060 W059 W023 W008 W025 R1038 R1022 W119 SW604_5 SW602_5 SW601_5 SW608_5 SW607_5 SW603_5 SW605_5 SW606_5 W145 W148 W149 W144 W150 R604 W147 W854 R1043 W091 W074 W015 W121 W824 W131 W815 W052 W054 W068 W013 W103 W116 W...

Page 34: ...210 R1007 Q4003 C4005 C4006 C6002 R6006 C4204 R4012 C4016_1 C4019 C4015 C4020 C4022 C4021 R4014 R4016 R4006 C4028 R4017 R4019 C4029 C4032 R4021 R4022 C4033 R4023 R4024 C4036 C4037 C4069 C4054 C4064 R4039 Q4012 Q4010 C4061 R4038 R4034 R4035 C4060 R4043 R4041 C4066 R4042 R4036 Q4011 R4037 C1036 R4046 R4044 R4025 C4038 R4007 C4057 R4209 R4018 C4074 C4044 R1041 Q1007 R605 R607 R602 R603 R601 R1072 R54...

Page 35: ...2 73 74 75 76 77 78 79 8 80 9 L4004 22uH L4005 47uH L4006 47uH RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL AUDIO SIGNAL PB AUDIO SIGNAL REC TUNER VIDEO SIGNAL H SW ENV DET COMP H AMP_SW C ROTARY Y C_CS IIC_DATA IIC_CLK P CON 5V P CON 5V AUDIO_MUTE H FSC P CON 5V REAR_A_IN GND FSC FRONT_V_IN FRONT_A_IN L TUNER_V TUNER_A FROM_NORMAL_A REAR_V_IN 4FSC 4F...

Page 36: ...SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL POWER_FAIL LED_VCC POWER_ON H AT 5V M CON IIC_DATA_A IIC_CLK_A AFT S CURVE TV VCR VIDEO_OUT RF_CH_SW VIDEO_MUTE H P CON 5V AT 5 2V AT 12 6_V GND GND GND IIC_DATA IIC_CLK 4FSC C SYNC V REC_ST H AUDIO_MUTE H TAB_SW LDM_CTL RF_CH_SW CENT_LED CAP_F R 3G REC_LED CAP_LIMIT CYL_DRIVE 2G T REC_LED POWER_ON H 1G TV VCR_LED 4FSC ...

Page 37: ...2uH L505_1 22uH DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME C520 470 6 3V YK C518 10 50V KA C514 1000 6 3V YK C522 220 16V YK C519 470 16V YK C508 47 200V PK C534 0 012 B C515 0 0082 B C502 0 0027 500V B C505 0 0022 250V NU C507 0 0047 B C529 0 0082 B C50...

Page 38: ...2 3 CP651 A2001WV2 3P 1 2 3 CD651 CU230701 DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME R605 13K R604 6 8K 1 4W R603 3 9K R602 2 7K R660 560 1 4W R658 560 1 4W R659 560 1 4W R657 560 1 4W R607 3 3K R601 3 3K W840 W824 W856 W857 1G TV VCR_LED 2G T REC_LED 3...

Page 39: ... 0 01 F R4205 10K R4210 100 R4213_1 390 1 4W R6006 10K R6005 22K R6004 1K 1 4W R4209 75 R4202 75 R4201 470 1 2W R4214 75 C4209 10 16V KA C6003_1 10 16V KA C4201 470 6 3V YK C4210 10 16V KA W815 W844 W813 TP4201 VIDEO OUT W863 W811 W816 W803 W866 Q4201 KTA1266 BUFFER L6002 22uH 0305 RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL AUDIO SIGNAL PB AUDIO SIG...

Page 40: ...RONT AV JACK VIDEO J4203 VMA248 SYSCON PCB PCB010 AUDIO IN VIDEO IN NC NC NC NC NC REAR IN JACK AUDIO_OUT VIDEO OUT SP_COM EP LP_COM EP LP CH2 L EP LP CH1 R SP CH2 L SP CH1 R UN4001 CYLINDER UNIT ASS Y EP LP HEAD SP HEAD 3 2 1 9 8 7 5 4 6 LD CY_VCO CYL _CTL CYL_FG PG GND M VCC LDM _CTL CAP _CTL I_LIMIT CAP M F R CAP _VCO CAP _FG M2003 MICRO MOTOR PG GND PG OUT GND M COM W OUT V OUT U OUT 3 2 1 Vou...

Page 41: ...WER SYSCON SERVO Y C AUDIO CCD HEAD AMP POWER ON 10µs 500mV div POWER ON 5ms 1 0V div POWER ON 100ns 100mV div PB 1ms 100mV div POWER ON 500µs 1 0V div PB 500µs 200mV div REC 5µs 20V div 5 4 8 3 2 7 1 6 POWER ON 50ns 1 0V div 11 FF REW 5ms 2V div 12 POWER OFF 5ms 2V div 14 FF REW 500µs 500mV div 9 PB 2µs 50V div 15 POWER ON 50ns 500mV div 10 H 1 ...

Page 42: ...I1 1 MECHANICAL EXPLODED VIEW 615 701 613 612 PCB010 SYSCON PCB TU6001 614 616 703 614 619 611 608 612 618 702 702 702 702 602 604 607 606 609 610 610 601 705 PCB270 OPERATION PCB 605 603 704 704 ...

Page 43: ...ect grease is applied for each position NOTE MARK CLASS GREASE AA 312 315 UN4001 M2003 502 504 H5001 503 306 305 332 507 335 342 322 508 324 302 506 304 M101 501 H5002 323 508 341 331 334 333 314 301 313 307 300 317 309 336 346 345 321 319 320 AA 316 318 325 347 AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA I2 1 ...

Page 44: ... 330 505 510 338 510 337 340 509 308 344 327 343 326 328 AA AA AA AA AA AA AA AA AA AA AA AA AA CD1501 CD1502 AA Applying positions AA for the grease are displayed for this section Check if the correct grease is applied for each position NOTE MARK CLASS GREASE AA I2 2 ...

Page 45: ...611 BZ710466 752WSA0230 SHIELD CASE HEAD AMP 612 BZ710574 701WPA0680 HOLDER DECK 613 BZ710575 755WPA0020 PLATE COVER POWER 614 BZ710178 85OP700036 HOLDER EOT SENSOR 615 BZ710576 702WSAA033 PLATE BOTTOM 616 BZ710577 701WPA0686 HOLDER DECK 618 BZ710578 702WSB0060 CABINET TOP 619 BZ710497 85OP700037 HOLDER LED 701 BZ710579 8110230804 SCREW TAP TITE P BIND 3x8 702 BZ710580 8109230802 SCREW TAP TITE B ...

Page 46: ...28 85OP900749 CASS SIDE R 320 BZ710529 85OP900739 LOCKER R 321 BZ710530 85OA900228 LINK UNIT 322 BZ710531 85OP000496 POST CASS GUIDE 323 BZ710532 85OP200316 REEL S S 324 BZ710533 85OP200317 REEL T S 325 BZ710534 85OP200308 GEAR IDLER 326 BZ710535 85OP200311 GEAR CLUTCH 327 BZ710536 85OP200312 GEAR COUPLING 328 BZ710537 85OP200313 LEVER CLUTCH 329 BZ710538 85OP300194 GEAR MAIN LOADING 330 BZ710092 ...

Page 47: ...4 SCREW WASHER A M2 6x5 508 BZ710056 82Q264713N POLYSLIDER WASHER 2 6x4 7xT0 13 509 BZ710054 82P184505N POLYSLIDER WASHER CUT 1 8x4 5xT0 5 510 BZ710058 83ETW30000 E RING 3 0 CD1501 BZ614338 122H071603 CORD JUMPER SMCD 7X151 CD1502 BZ614339 122Y021902 CORD JUMPER 2Y021902 H5001 BZ710040 1523D91034 HEAD AUDIO CONTROL HVMXA1072A H5002 BZ710041 1543D02013 HEAD FULL ERASE HVFHP0032A M101 BZ710566 1596P...

Page 48: ...ODE SILICON 1SS133T 77 D1005 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 ICS IC501 BZ611019 I1KJ9A4310 IC KIA431 IC505 BZ410088 0002E00610 PHOTO COUPLER LTV 817M VB IC511 BZ410088 0002E00610 PHOTO COUPLER LTV 817M VB IC1001 BZ611094 I54F50117A IC OEC0117A IC1003 BZ611057 IC7J0311A0 IC R3111N311A C TR IC4001 BZ611095 I03F3205M0 IC LA71205M MPB TRANSISTORS Q502 BZ510031 TD3T007340 TRANSISTOR SILICO...

Page 49: ...PCB ASS Y VEA977A MISCELLANEOUS B501 BZ310130 024HT03564 CORE BEADS W4BRH3 5X6X1 B502 BZ310130 024HT03564 CORE BEADS W4BRH3 5X6X1 CD501 BZ614347 120R414901 CORD AC BUSH 0R414901 CD651 BZ614348 06CU230701 CORD JUMPER CU230701 CP601 BZ614349 067U003029 WIRE HOLDER B2013H02 3P CP651 BZ614350 069S230629 CONNECTOR PCB SIDE A2001WV2 3P CD6002 BZ614085 06CQL02006 CABLE SI C108 40 CP1001 BZ614289 06972C00...

Page 50: ...TOSHIBA VIDEO PRODUCTS PTE LTD 438B ALEXANDRA ROAD BLOCK B 06 01 ALEXANDRA TECHNOPARK SINGAPORE 119968 ...

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Toshiba w425, Service Manual, Page: 35 / 50

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