JVC TD-W254BK Service Manual Download Page 5

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

Recording signal

Indicator signal

P.B signal (Deck A)

P.B & H.P signal (Deck B)

Equalizer & headphone amp circuit

Standard schematic diagrams

A

B

C

D

E

F

G

1

2

3

4

5

2-3

TD-W254BK

Note:/s/t/T235812AV.001
VDH2358-102AV_1/1 

IC811

CN801

CN802

Q8163

Q8101

J701

VR117

Q1101

R1104

R1109

IC811

VR217

IC815

IC816

Q2101

R2104

R2109

Q8471

R8151

VR116

VR216

Q8171

C8901

VR112

C1154

C2154

R2155

R1154

R1159

Q8172

IC815

R8152

IC861

J8601

IC891

VR212

R1155

R1158

R2158

R2154

R2159

C1156

C2156

Q1152

Q2152

R1108

R1106

R1105

R2108

R2106

R2105

C1104

C2104

R1110

R2110

C2106

C1106

R1601

R2601

R1602

R2602

R1604

R2604

IC861

L8401

R2452

C2456

C2452

R2451

R1452

R1451

C1452

C1456

Q8481

R8482

R8484

R8483

Q8482

Q8491

Q8492

R8492

R8493

C8496

C8495

CN815

CN811

C8493

IC818

VR146

C1152

R8101

C2152

R1152

VR246

VR111

R2152

R8173

CN861

R8171

C1101

C1108

C1102

R1102

C1103

C1105

D8481

C8101

R8172

R8102

C8102

R8471

C2107

C2101

C2108

C2102

R2102

C2103

C2105

R1111

C1601

C1107

R8451

C1151

C1153

C1155

R8104

C2169

C8151

C1169

C1602

C8152

C2602

C2151

C2153

C2155

C8453

R1165

R2165

IC812

R1107

R2107

R8103

VR211

R1101

R2101

C2601

R1603

R1605

R2605

R2603

C8602

C8601

R2111

R1160

R2160

R1161

R2161

R8452

R8453

D8451

D8452

CN845

R8472

CN862

R8474

R8473

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

M50253P

6.8K

4.7K

4.7K

270K

15

4.7/50

4.7/50

3.6K

4.7K

3.3K

3.6K

4.7K

3.3K

0.01

0.01

33K

33K

4.7/50

4.7/50

150

150

120K

120K

5.6K

5.6K

BA15218N

QQR0845-001

33K

0.039

100P

270K

33K

270K

100P

0.039

15

1K

1K

82K

82K

0.0015

0.0015

QGF1220F1-06

QGF1220F1-06

0.022

BU4066BC

QVP0004-203Z

330P

22k

330P

4.7k

QVPA601-203AZ

QVP0004-104Z

4.7k

100K

QGB2003L1-05

1K

470P

150P

150P

4.7K

150P

220/10

0.01

100K

100K

0.01

1.8K

470P

470P

150P

150P

4.7K

150P

220/10

12K

0.022

470P

4.7K

0.001

QVP0004-101Z

150P

220/10

47K

270P

10/25

270P

0.0022

0.01

0.0022

0.001

QVPA601-101AZ

150P

220/10

1/50

1M

1M

BU4066BC

2K

2K

1K

QVP0004-104Z

1M

1M

0.022

10K

1.8K

1.8K

10K

0.01

0.01

12K

33K

33K

12K

12K

3.6K

3K

QGA2512C1-05Z

22K

QGB2003M2-05

1.8K

22K

47K

330/25

0.01

UPC1297CA

560P

0.022

10

10/25

560P/100

10

560P/100

560P

0.01

0.022

10/25

10/25

100/10

100/10

QQR0847-001

QQR0847-001

10P

10K

4.7/50

100/10

47/25

470

3.3K

6.8

0.001

0.01/100

HS

RECSIG-R

MUTE

LINEOUT-L

LINEOUT-R

NS

7V

RECSIG-L

GND

PBIN-L

-7V

PBIN-R

5V

RECMUTE

NRREC

DUB

NRSW

DDRP

DDRPSEL

-24V

F1

F2

5.6V

11V

STBY

VOLRETURN

VOLSEND

METER-L

METER-R

RESET

POFF

BCrO2

B70

BMETAL

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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