JVC TD-W254BK Service Manual Download Page 7

Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.

Indicator signal

Display & Mecha control circuit

A

B

C

D

E

F

G

1

2

3

4

5

2-5

TD-W254BK

 Note:/s/t/T235812CV 
VDH2358-102CV_1/1

CN721

CN711

CN601

S601

S607

CN701

D716

Q704

CN712

Q707

CN722

Q706

DI701

Q705

S608

Q751

S624

S605

S604

S625

S626

S627

Q752

IC701

S628

S629

S630

S621

S622

S623

R601

R622

R607

R608

R621

R624

R625

R627

R628

Q740

CN613

CN603

Q703

D717

Q745

S610

S603

S602

D718

R603

Q709

R623

D741

R765

R767

R768

Q708

S606

R606

R605

R626

VR601

R716

VR704

R718

VR703

W703

VR702

Q710

Q711

D715

R785

R786

R783

R784

D712

VR701

Q712

R756

CN614

FW701

R769

R752

CN604

D709

D710

R766

R702

Q744

R733

R731

R736

IC733

IC731

R734

IC734

IC732

B7101

R711

D701

Q701

Q702

R708

X701

R701

C701

R742

R751

Q743

R743

D711

CN602

R780

R651

R673

R781

R762

R761

R652

R746

R782

R653

R712

R654

R655

R656

CN702

R657

R658

R604

D719

R609

D705

R610

D702

R659

R660

R661

R662

R663

R664

R665

R666

R667

R668

R669

R670

R671

R672

C733

R717

R715

D703

D707

D704

D708

D706

C703

R719

D720

D713

C706

R748

R747

R749

R770

R771

R772

R773

R774

R775

R764

D721

D722

D724

D723

R753

R754

R740

R741

R735

R732

R755

R710

R703

R707

R706

R705

R704

R709

C702

Q741

Q742

R750

R745

C731

QGB1219K1-08S

QGB1219K1-08S

DN6851A

QGF10205F1-06

DN6851A

QGB1219J1-15S

QGB1219J1-15S

QGB1219J1-08S

QGF1205F1-20

QGB1219K1-15S

QGB1219K1-15S

QGB1219J1-08S

MB88514B-1730T

1K

1.8K

1.8K

2.7K

2.2K

1K

1.2K

2.7K

4.7K

QGB2012J1-06

QGG2002M2-06

QSS7A23-V03

QSS7A23-V03

18K

2.7K

SLR-56VC-T12

150

6.8K

6.8K

1.2K

1K

1.8K

QVGA12B-V06

1K

QVP0077-203Z

220

QVP0077-103Z

22K

22K

22K

22K

10K

QGB2012J1-04

6.8K

10K

QGG2002M2-04

6.8K

220

1.8K

3.3K

1.8K

TA8409S

BA6218

3.3K

TA8409S

BA6218

47K

2.7K

QAX0246-001Z

15K

100/10

15K

15K

10K

MSI-5B2LW

MSI-5B2LW

QGF1205F1-06

MSN-5D257A

MMN-6F4RA38

22k

47K

47K

22k

22K

22K

47K

220K

22k

47K

22K

47K

47K

47K

QGF1205F1-06

47K

47K

27K

10K

10K

47K

47K

47K

47K

47K

47K

47K

47K

47K

47K

47K

47K

47K

47K

10/25

1K

22K

470P

220

0.0047

220K

220K

220K

100

MSN-5D257A

MMN-6F4RA38

100

100

100

100

100

10K

220K

220K

220K

220K

10K

10K

4.7

220

470

470

1K

1K

1K

10K

470P

68k

68k

10/25

KEY0

5.6V

D-GND

STBY

RESET

5V

DCS

B70

G6

G0

G4

G5

G1

F1

G3

G2

S1

-7V

11V

S2

F2

S3

S4

S5

S6

S7

S8

A70

S9

S10

A70

-24V

CLK

S11

S12

S13

S14

S15

S16

POFF

KEY1

KEY2

BMETAL

KEY3

METER-L

METER-R

DATA

B70

BMETAL

POFF

KEY0

KEY1

KEY2

KEY3

M-GND

F2

B.A

B.RC

B.RR

B.FC

G0

G1

A.A

B.FR

A.RC

A.RR

-24V

G2

G3

G4

G5

G6

A.RR

F1

A.FC

A.F.CAM

A.FR

S1

S2

S3

S4

B.B

S5

S6

S7

S8

S9

S10

S11

S12

S13

S14

S15

S16

A.R.CAM

B.R.CAM

B.F.CAM

A.R.REEL

A.F.REEL

B.F.REEL

B.R.REEL

A.B

A.FR

B.RC

B.FR

B.RR

B.FC

A.RC

A.FC

Summary of Contents for TD-W254BK

Page 1: ...TE PAUSE COUNTER RESET COUNTER RESET PHONES A B SYNCHRO DUBBING NORM SPEED HIGH SPEED PLAY PLAY MIN MAX 1 2 5 3 4 6 INPUT LEVEL MIN MAX 1 2 5 3 4 6 7 8 9 INPUT LEVEL TD W254 ON OFF DOUBLE CASSETTE DECK DOLBY B C NR HX PRO AUTO TAPE SELECTOR CONTINUOUS PLAY REVERSE MODE DOLBY B NR OFF C B B REC PLAYBACK AUTO REVERSE A PLAYBACK AUTO REVERSE STANDBY Please confirm this SCHEMATIC DIAGRAMS No 4363BSCH ...

Page 2: ...200107 VICTOR COMPANY OF JAPAN LIMITED PERSONAL MOBILE NETWORK BUSINESS UNIT 10 1 1chome Ohwatari machi Maebashi city 371 8543 Japan No 4363B TD W254BK ...

Page 3: ... HEADPHONES IC852 LEVEL METER AMP J8601 H P JACK LINE OUT L R IC835 DOLBY NR REC OUT R REC OUT L PB IN R PB IN L 12 13 Q8171 PB O UT L REC IN L REC IN R PB OUT R IC818 PB SIGNAL SELECT A70 5 6 Q8172 B PB A PB IC811 7 3 PB HEAD AMP DECK A IC851 VOL CONTROL DD RP IC812 PB EQ SWITCH VCA VCA LINE IN DECK A PB HEAD VR111 A PB EQ ADJ L VR211 A PB EQ ADJ R DECK B REC PB HEAD VR116 B PB EQ ADJ L VR216 B P...

Page 4: ... M E M O TD W254BK 2 2 ...

Page 5: ...73 R8475 D8101 C8483 C2454 IC845 C2453 C2455 R1453 C1457 C2451 R2453 C1451 C1453 C1454 C1455 C2457 C8451 C8454 C8455 L1401 L2401 C8452 R8481 C8481 C8482 C8492 R8485 R8486 R8491 C8494 C8491 AN6557F QGF1205C1 06 QGF1205C1 20 QMS3533 V01 QVP0004 101Z 270K 15 AN6557F QVPA601 101AZ AN6557F UPC1330HA 270K 15 22k QVP0004 104Z QVP0004 104Z 0 01 0 012 0 012 6 8K 270K 15 AN6557F 22K BA15218N QNS0092 001 M50...

Page 6: ... R8516 D8513 R1511 R2511 D1511 D2511 R1502 R2502 R2514 R1514 R1512 R1501 R2501 R1503 R2503 R2512 C2511 C1511 R2516 R1516 C8512 C8511 C8503 R8503 C2501 R8502 C1501 C906 C930 R8355 R8252 R8501 R2273 R1273 R8255 D8253 R1504 R2504 D8514 FW901 FW901 D925 C928 CN901 CN901 QQR0879 001 QQR0879 001 22K 22K 100K 1 5K 4 7K 4 7K QVP0004 203Z BA15218N 33P 3 3K 470 180 4 7 25 33K 8 2K 0 33 50 1 50 4 7mH 15K 5 6...

Page 7: ...2 Q741 Q742 R750 R745 C731 QGB1219K1 08S QGB1219K1 08S DN6851A QGF10205F1 06 DN6851A QGB1219J1 15S QGB1219J1 15S QGB1219J1 08S QGF1205F1 20 QGB1219K1 15S QGB1219K1 15S QGB1219J1 08S MB88514B 1730T 1K 1 8K 1 8K 2 7K 2 2K 1K 1 2K 2 7K 4 7K QGB2012J1 06 QGG2002M2 06 QSS7A23 V03 QSS7A23 V03 18K 2 7K SLR 56VC T12 150 6 8K 6 8K 1 2K 1K 1 8K QVGA12B V06 1K QVP0077 203Z 220 QVP0077 103Z 22K 22K 22K 22K 10...

Page 8: ...908 R910 R912 R913 R914 R915 R917 R918 R921 R923 R927 R928 R929 R930 R931 R933 R937 R938 R940 R941 R1101 R1102 R1104 R1105 R1106 R1107 R1108 R1109 R1110 R1111 R1152 R1154 R1155 R1158 R1159 R1160 R1161 R1165 R1251 R1252 R1253 R1254 R1255 R1256 R1257 R1258 R1259 C2259 R1261 R1262 R1263 R1264 R1265 R1267 R1270 R1271 R1272 R1273 R1351 R1353 R1354 R1355 R1356 R1357 R1451 R1452 R1453 R1501 R1502 R1503 R...

Page 9: ...R673 R672 VR701 VR702 VR703 VR704 X701 B7101 C706 C705 W701 C703 C734 W703 DI701 R671 R670 R668 R667 R658 R669 R659 R666 R660 R661 R662 R663 R664 R665 R651 R655 R652 R654 R656 R657 R653 C733 R715 R717 R718 R716 C704 W702 R719 8 1 15 1 B E B B E E 1 20 B 33 35 40 45 50 60 1 5 10 15 20 25 30 32 B E E B B E B B HS B NS SPEEDADJ E B 1 1 9 9 8 1 1 15 E B B E 10 15 20 25 31 35 B E E B 41 1 E B E B E E E...

Page 10: ...ARTS LIST All printed circuit boards and its assemblies are not available as service parts Contents Electrical parts list Block No 01 02 TD W254BK 3 2 3 7 Area suffix J C EN U U S A Canada Northern Europe Other Areas ...

Page 11: ...EM 123Z C CAPA I M C1351 QENC1EM 475Z NP E CAPA I M 4 7MF 20 25V C1354 QENC1EM 475Z NP E CAPA I M 4 7MF 20 25V C1355 QFN31HJ 222Z M CAPACITOR 2200PF 5 50V C1356 QFN31HJ 222Z M CAPACITOR 2200PF 5 50V C1357 QFN31HJ 222Z M CAPACITOR 2200PF 5 50V C1358 QETN1HM 104Z 05CAPACITOR 10MF 20 50V C1359 QETN1HM 104Z 05CAPACITOR 10MF 20 50V C1360 QENC1EM 475Z NP E CAPA I M 4 7MF 20 25V C1451 QFP32AJ 561Z PP CAP...

Page 12: ...E IM D 917 1SS133 T2 SI DIODE IM D 918 MTZJ12C T2 ZENER DIODE D 921 1SS133 T2 SI DIODE IM D 922 MTZJ6 2B T2 ZENER DIODE D 923 1SS133 T2 SI DIODE IM D 924 1SS133 T2 SI DIODE IM D 925 1SS133 T2 SI DIODE IM D 926 MTZJ6 8B T2 ZENER DIODE D1511 1SS133 T2 SI DIODE IM D2511 1SS133 T2 SI DIODE IM D8101 1SS133 T2 SI DIODE D8252 1SS133 T2 SI DIODE IM D8253 1SS133 T2 SI DIODE IM D8351 1SS133 T2 SI DIODE IM D...

Page 13: ...QRE141J 222Y C RESISTOR 2 2K 5 1 4W R1264 QRE141J 222Y C RESISTOR 2 2K 5 1 4W R1265 QRE141J 562Y C RESISTOR 5 6K 5 1 4W R1266 QRE141J 682Y C RESISTOR 6 8K 5 1 4W R1267 QRE141J 182Y C RESISTOR 1 8K 5 1 4W R1270 QRE141J 105Y C RESISTOR 1 0M 5 1 4W R1273 QRE141J 472Y C RESISTOR 4 7K 5 1 4W R1351 QRE141J 222Y C RESISTOR 2 2K 5 1 4W R1352 QRE141J 103Y C RESISTOR 10K 5 1 4W R1353 QRE141J 472Y C RESISTOR...

Page 14: ...W R8351 QRE141J 183Y C RESISTOR 18K 5 1 4W R8352 QRJ146J 470X UNF C RES I M A 47 5 1 4W R8353 QRJ146J 470X UNF C RES I M A 47 5 1 4W R8354 QRE141J 153Y C RESISTOR 15K 5 1 4W R8355 QRE141J 183Y C RESISTOR 18K 5 1 4W R8451 QRE141J 472Y C RESISTOR 4 7K 5 1 4W R8452 QRE141J 362Y C RESISTOR 3 6K 5 1 4W R8453 QRE141J 302Y C RESISTOR 3 0K 5 1 4W R8471 QRE141J 182Y C RESISTOR 1 8K 5 1 4W R8472 QRE141J 223...

Page 15: ... 604 QRE141J 273Y C RESISTOR 27K 5 1 4W R 605 QRE141J 102Y C RESISTOR 1 0K 5 1 4W R 606 QRE141J 122Y C RESISTOR 1 2K 5 1 4W R 607 QRE141J 182Y C RESISTOR 1 8K 5 1 4W R 608 QRE141J 272Y C RESISTOR 2 7K 5 1 4W R 609 QRE141J 103Y C RESISTOR 10K 5 1 4W R 610 QRE141J 103Y C RESISTOR 10K 5 1 4W R 621 QRE141J 222Y C RESISTOR 2 2K 5 1 4W R 622 QRE141J 182Y C RESISTOR 1 8K 5 1 4W R 623 QRE141J 272Y C RESIS...

Page 16: ... QRE141J 101Y C RESISTOR 100 5 1 4W R 771 QRE141J 101Y C RESISTOR 100 5 1 4W R 772 QRE141J 101Y C RESISTOR 100 5 1 4W R 773 QRE141J 101Y C RESISTOR 100 5 1 4W R 774 QRE141J 101Y C RESISTOR 100 5 1 4W R 775 QRE141J 101Y C RESISTOR 100 5 1 4W R 780 QRE141J 223Y C RESISTOR 22K 5 1 4W R 781 QRE141J 223Y C RESISTOR 22K 5 1 4W R 782 QRE141J 223Y C RESISTOR 22K 5 1 4W R 783 QRE141J 223Y C RESISTOR 22K 5 ...

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