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RM-67

EZ(S)

SERVICE MANUAL
RADIO CASSETTE RECORDER · BASIC TAPE MECHANISM : TN-21ZVC-1145

This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No.09-997-333-6T2).

RE
S/M Code No. 09-997-333-6R2

DA TA

VI

SIO

N

SPECIFICATIONS
Tuner section Frequency range: FM: 87.5 - 108.0 MHz MW: 530 - 1,605 kHz LW: 150 - 285 kHz FM: Rod antenna MW, LW :Ferrite bar antenna General Speaker Output Power output 90 mm cone type (1) Earphone jack (monaural mini-jack) 1.7 W (DIN MUSIC POWER) 1 W (EIAJ 4 ohms, T.H.D. 10%) 0.8 W (DIN 1% Rated Power) DC 6 V using four size C (R14) batteries AC 230 V,50 Hz 6W 279 (W) x 128 (H) x 101 (D) mm 1.2 kg (excluding batteries)

Antenna:

Power requirements Deck section Track format Frequency range Recording system Erasing system Heads 2 tracks, 1 channel Normal tape: 50 - 10,000 Hz (EIAJ) AC bias Magnet erase Recording playback head (1) Erasure head (1) Power consumption Dimensions Weight

· Design and specifications are subject to change without notice.

ACCESSORIES LIST

REF. NO

PART NO.

KANRI NO.

DESCRIPTION

1 8Z-CM2-908-010 2 87-A80-081-010

IB,EZ(9L)A AC CORD SET ASSY,EZ BLK

2

TRANSISTOR ILLUSTRATION ELECTRICAL MAIN PARTS LIST

REF. NO IC

PART NO.

KANRI NO.

DESCRIPTION

REF. NO C239 C240 C301 C302 C303 C304 C305 C306 C307 C308 C309 C311 CF101 CF102 CF103 CF104 D104 J1 L101 L102 L103 L104 L105 L107 L201 L301 !PR301 PVC2 R306 SW101 SW201 SW202 SW203 T101 T103 T104 T201 TC101 TC102 VR201 VR202

88-CM2-608-010 8Z-CM2-646-010 TRANSISTOR 87-CD7-603-080 89-319-233-010 DIODE 87-A40-246-080 87-A40-357-080 86-CM3-601-080 87-017-088-080 8Z-CM1-657-010 8Z-CM1-656-010 MAIN C.B C100 C104 C106 C110 C113 C114 C115 C117 C118 C121 C122 C124 C126 C128 C131 C132 C133 C134 C135 C202 C203 C204 C206 C207 C209 C211 C212 C213 C216 C217 C218 C219 C220 C221 C222 C223 C224 C225 C226 C227 C228 C229 C230 C232 C234 C235 C236 C237 C238 87-A10-176-010 87-A10-577-010 87-A10-162-010 87-A10-496-010 87-A10-176-010 87-010-404-080 87-A10-166-010 87-A10-171-010 87-A11-848-080 87-010-404-080 87-A10-182-010 87-010-400-080 87-010-402-080 87-010-405-080 87-A10-413-010 87-A10-182-010 87-010-221-080 87-A10-411-010 87-A10-176-010 87-010-404-080 8Z-CM1-620-010 8Z-CM1-620-010 87-010-544-080 87-010-380-080 87-010-221-080 87-010-221-080 87-010-400-080 87-010-380-080 87-A10-170-010 87-010-405-080 8Z-CM1-620-010 87-A10-182-010 87-010-380-080 87-A10-182-010 87-A10-182-010 87-010-401-080 8Z-CM1-620-010 87-010-405-080 87-010-263-080 87-010-545-010 87-A10-840-010 8Z-CM1-620-010 87-010-402-080 87-010-221-080 87-010-380-080 87-A10-211-010 87-A10-182-010 87-010-544-080 87-010-248-080

IC,TA7628 HP IC,TA2132P

KANRI DESCRIPTION NO. 87-A10-411-010 CAP,CER 0.047-16 K SR 87-A10-176-010 CAP,CER 1000P-50 M D 87-A10-577-010 CAP,CER 0.022-50 Z YF 87-A10-577-010 CAP,CER 0.022-50 Z YF 87-010-236-080 CAP,E 1000-16 SME 87-A10-411-010 87-010-221-080 87-010-221-080 87-A10-411-010 87-010-248-080 87-A10-211-010 87-010-248-080 8Z-CM1-642-010 82-785-747-080 87-008-554-010 82-785-747-080 87-CD8-614-010 8Z-CM1-608-010 8Z-CM2-669-010 8Z-CM2-661-010 8Z-CM2-660-010 87-003-143-080 8Z-CM2-668-010 8Z-CM2-642-010 87-003-149-080 87-003-149-080 87-A91-703-080 8Z-CM1-636-010 87-A00-436-050 8Z-CM2-649-010 8Z-CM2-647-010 8Z-CM2-650-010 8Z-CM2-648-010 8Z-CM2-667-010 8Z-CM2-638-010 8Z-CM2-637-010 8Z-CM1-605-010 87-A91-657-010 87-A91-657-010 8Z-CM1-603-010 8Z-CM1-604-010 CAP,CER 0.047-16 K SR CAP, ELECT 470-10V CAP, ELECT 470-10V CAP,CER 0.047-16 K SR CAP, ELECT 220-10V CAP,CER 0.1-50 M CAP, ELECT 220-10V FLTR,SFU465B FILTER, SFE10.7MS2-A FLTR,CF CDA10.7MG60-A FILTER, SFE10.7MS2-A VARI-CAP,1S2638 JACK, EP ZCM-1 COIL,FM RF4T4.5MM COIL,FM RF4T5MM COIL,FM OSC3T5.5MM COIL,4.7UH COIL,BAR ANTLW COIL,BAR ANTMW COIL,47UH COIL,47UH FUSE PROTECTOR,800MA/60V TUN-CAP, EZ RES,100-1/2W J RP SW,SL 2-6-3 BAND SW,SL 2-4-2 FUNC SW,PUSH 2-6-2 REC SW,SL 2-2-2 BEAT COIL,LWOSC COIL,MW OSC COIL,AM IFT2 COIL, BIAS TRIMMMER 20P TRIMMMER 20P VR,RTRY 50K A MAIN VR,RTRY 10K B TONE

PART NO.

ECB 2SC1923 SS8050

TR,SS8050 TR,2SC1923(O)

DIODE,IN4148 T-72 ZENER,3.9V DIODE,CDG-24 ZENER,4.7V DIODE, IN60P DIODE, 1N4001B

IC BLOCK DIAGRAM
IC, TA2132P

CAP,CER CAP,CER CAP CER CAP,CER CAP,CER

1000P-50 M D 0.022-50 Z YF 68P-50 KSL 18P-50 J CH 1000P-50 M D

CAP, ELECT 4.7-50V CAP,CER 150P-50 K B CAP,CER 390P-50 K B CAP,CER 24P-50V CAP, ELECT 4.7-50V CAP,CER 0.01-50 Z F CAP, ELECT 0.47-50V CAP, ELECT 2.2-50V CAP, ELECT 10-50V CAP,CER 2200P-4K M E KX CAP,CER 0.01-50 Z F CAP, ELECT 470-10V CAP,CER 0.047-16 K SR CAP,CER 1000P-50 M D CAP, ELECT 4.7-50V CAP,CER 500P-50 CAP,CER 500P-50 CAP, ELECT 0.1-50V CAP, ELECT 47-16V CAP, ELECT 470-10V CAP, ELECT 470-10V CAP, ELECT 0.47-50V CAP, ELECT 47-16V CAP,CER 330P-50 K B CAP, ELECT 10-50V CAP,CER 500P-50 CAP,CER 0.01-50 Z F CAP, ELECT 47-16V CAP,CER 0.01-50 Z F CAP,CER 0.01-50 Z F CAP, ELECT 1-50V CAP,CER 500P-50 CAP, ELECT 10-50V CAP, ELECT 100-10V CAP, ELECT 0.22-50V CAP,CER 220P-1K K R LONG CAP,CER 500P-50 CAP, ELECT 2.2-50V CAP, ELECT 470-10V CAP, ELECT 47-16V CAP,CER 0.1-50 M CAP,CER 0.01-50 Z F CAP, ELECT 0.1-50V CAP, ELECT 220-10V

LED C.B D303 87-A91-052-080 LED,SEL6227S RED

IC, TA7628HP

3

4

SCHEMATIC DIAGRAM

L102, TC2 FM TRACKING ADJ.

L103, TC1 FM FREQ. RANGE ADJ.

T103, TC3 MW FREQ. RANGE ADJ.

T101, TC101 LW FREQ. RANGE ADJ.

TC2

VC2 4T5mm 18P(NPO)

VC1 TC1 4.7/50

R112 4.7K TC3 20P

VC3 47

MW.R

L107, TC4 MW TRACKING ADJ.
G2

390P

C107 15P(NPO)

TC4

PVC2 TC1~TC4 VC1~VC4 VC1~VC4 TUNING
LW.R
MW BAR ANT.

0.47/50 15 1500P(M)

MW.W LW.W VC4 C106 68P (NPO) 20P G1

10/50 LW BAR ANT.
(MW/LW) FM (3.8) 2 (3.6) 3.1 (2.8) 3.1 (3.6) 3.1 (2.6) 1.7

TP1
(0.4) 1 (4.2) 3.7

SW101A~F BAND FM MW LW
2.2/50

L105, TC102 LW TRACKING ADJ.
FM ROD ANT.
(0) 0.8 0

IC101
4.5 (0.1) 0 4.5

P

FM F/E +AM/FM IF

4.5

(3.8) 4

0

Q101 FM IF AMP 0.047
3 0.1

SW201A~D FUNCTION RADIO TAPE/ POWER
470/10

STANDBY
220/10

M1

C121 4.7/50 1K

L-1

SW1 (POWER)

T104 MW/LW IF ADJ.

(0.9) 0.8

L-2

0.022

MS2-A

MS2-A

PR301 800

1N4001B AC2

47/16

2K 3.3K

D303 SEL6227S RED OPE/BATT.

C237 0.1/50

SW202E SW202D

0.022 GND

PT1

AC1 AC~ AC SOCKET
AC230V, 50Hz

MIC1 MIC

4.7K

0.01

5.6K 47/16 240

470/10

0.022 0.047 1000/16

5.6K

AC1 560 0.47/50 1N4001B

SW202A~F (REC PLAY)

SW202B

4.7/50

0.1/50 C211 470/10 C306 470/10 0.047

SW202A H.R SW202C
(REC)

470/10 500P 500P
1.4 <9.6> (8.7) <9.6> (8.8) <9.2> (8.4)

47/16

H.GND 47/16 H.W
<0> (0.2)

1.3

1.3

<8.6> (7.8)

SIZE C (R14) x 4

IC201

PRE-AMP

10/50

<0> (4)

<0> (0.8)

0

0.6

<5> (4.5)

100/10

470/10

: AUDIO PB/FM SIGNAL
5.6K 1/50 0.22/50 500P 6.8K

: AUDIO REC/AM SIGNAL

<9.7> (2.2)

<9.6> (5)

500P TP2

<9.4> (1.5)

SS8050 REC BIAS OSC

1N60P

2.2/50 10/50 SP1 (SPEAKER)

500P

3.9K

T201 BIAS OSC ADJ.
SW203 (BEAT) SW202F 0.047 220/10 220/10

5

6

WIRING
1 2 3 4 5 6 7 8 9 10 11 12 13 14

A
BATTERY C(R14) BATTERY C(R14) BATTERY C(R14) BATTERY C(R14)

FM ROD ANT.
YEL

B
L107 (MW BAR ANT.) L105 (LW BAR ANT.)

B LED C. B
D303 OPE/ BATT
D303

PT1

MW.W

LW.R

LW.B

RED

BLK

BLK

C

LW. W

MW.B

MW.G

MW.R

LW.G

AC1 AC~ AC110~120V/ 220~240V. 50/60Hz
ORG

WHT2 BLU WHT1

WHT1

D

A MAIN C. B
(PARTS SIDE VIEW)
LW.R MW.R

FM

SW101 BAND MW

LW REC
C126
R111 C131 R231

C237 R233

R110

VR201

R211
R107

VR202 C231

ORG

VR201 VOLUME

SW202 PLAY

VR202 TONE

WHT2

W: B: G: R:

WHT BLK GRN RED

SW201 FUNCTION TAPE/ RADIO POWER STANDBY

J1 EARPHONE

SW201

C302

C301

J1
R223

SW101

PVC2
TC2 TC4

-D
MW.W

-E
LW.G G1 LW.W

-A
C117
R112 C115
R117

R114

C234 C202
R202

L102

VC4

R302

C107

VC2

R201

R232

-C
SW202

C106

R210 R205 R206

R116

C116 T103 C114 C124 C201 TC101 C217

C118
C104 VC3 VC1

TC102

-F -D

C207 C203 C204

C205 R203 R208

F

C109

G2 MW.B

-B

C212 C206 C210 R209

C209 C311 C211

C304

R224

T101

R304 R207 RED R204

C305

BLK R303 L301

D302

D103

R229

R301

WHT

-C

-B

PR301

C230

GRY

C236 R230

D301

E

VC1~VC4 TUNING

-C

-F

-B

R212

-D

-A

C233

BLK BLU

C303

RED

TC1

TC3

16
C208 C221 IC201

13

11

9

C307

C306

D104 R108

D101

C110
D102 R101 C101

C113 R103 C112

R104
C127 R105

RED

-A -E

D201

L103

1
R216
D202

3
C222

WHT 5

R221

8
C229

C213

IC101

CF104

R124

C102
R109 C129 L104

R122

T104

C121 CF101 R123 C123 C125
C135 R228 R225 C219

TP2
R306 C215

R215

C220

R217

1

3

5

8
C122

C238

C308

C223

C224

C128

C227

C103

D105

C100

R227

TP1

C228

R222 C232

R220

R106 C133
C134

R218 C225

R214

R226

L101

C218

R213

R219

C226

C216

H

C139

CF102

C214

B C E

C140 Q101

R125

C240

Q201

T201

WHT

NOTE CXXX
,

SW203 (BEAT)

C132

D203

C309 L201 R305

C235

SW203

11

9

C239

16

13

WHT WHT

G

CF103

WHT BRN

BLK YEL

BLU

CXXX
, ,
WHT GRY

JPXXX RXXX

,
WHT

GND RED WHT

,

GND

J

LXXX

M1 (MOTOR)

BLU

YEL

I

MIC1 MIC

R/P HEAD

BLK

RED

SW1 (POWER)

SP1 (SPEAKER)

7

8

BRN

BLK

ADJUSTMENT

MECHANICAL EXPLODED VIEW 1/1

MW COIL

LW COIL

5
L107 L105

A MAIN C.B
7
PLATE, SPKR 3

2
TC2 TC1

T103 TC102

T101
E

VC L102
TC3 TC4

6
TC101 TP1 (DET OUT)

10

1

L103

LED C.B

PLATE, SPKR

E

10

TP2 (BIAS FREQ.) T104 T201 C215

4
19 11 C

9

A

IC101

E

3

8

7

6

A

8

A

20

5

21

A

E

PRACTICAL SERVICE FIGURE
A

23

17

A

1. FM Freq. Range Adjustment L103 .......................................................................... 87.4 MHz TC1 ......................................................................... 108.3 MHz 2. FM Tracking Adjustment L102 ............................................................................. 88 MHz TC2 ............................................................................ 108 MHz 3. AM IF Adjustment T104 ............................................................................. 465 kHz 4. MW Freq. Range Adjustment T103 ............................................................................. 515 kHz TC3 ............................................................................ 1635 kHz 5. MW Tracking Adjustment L107 ............................................................................. 600 kHz TC4 ............................................................................ 1400 kHz 6. LW Freq. Range Adjustment T101 ............................................................................. 145 kHz TC101 .......................................................................... 295 kHz 7. LW Tracking Adjustment L105 ............................................................................. 150 kHz TC102 .......................................................................... 280 kHz 8. Bias Freq. Adjustment T201 ............................................................................... 60 kHz

Sensitivity: FM (IHF, THD 3%) MW (S/N 10 dB)

CUSH, MIC

A

31

D

25

37

Tape Speed: Take up Torque FF/Rew Torque FF/Rew Time Wow & Flutter:

34

E

Distortion: S/N Ratio: Noise Level:

Less than 3.0% (PB) More than 35 dB Less than 30 mV (VR Max.) Less than 2 mV (VR Min.) 3000 Hz + 90% ­ 60% 30 - 60 g-cm 45 - 140 g-cm 100 - 170 sec Less than 0.4% (RMS)

31

35

C

E

33

32

D

36

9

38

28

D

27

PLATE, TRANS

30

D

10

26

PLATE, TRANS

30

MAIN C.B

E

Less than 22 dB (at 88, 98, 108 MHz) Less than 52 dB (at 600, 1,000, 1,400 kHz) LW (S/N 10 dB) Less than 65 dB (at 150, 200, 280 kHz) Intermediate Frequency: FM 10.7 MHz AM 465 kHz

29

22

16

15

13 14

12

A

E

4

TN-21ZVC-1145

24

B

H

18

2

1

MECHANICAL MAIN PARTS LIST

REF. NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

PART NO.

KANRI NO.

DESCRIPTION

REF. NO 26 27 28 29 30 31 32 33 34 35 36 37 38 A B

PART NO.

KANRI NO.

DESCRIPTION

8Z-CM2-024-010 8Z-CM2-009-010 8Z-CM2-027-010 8Z-CM2-063-010 86-CM2-212-010 8Z-CM2-208-010 8Z-CM2-209-010 8Z-CM2-006-010 8Z-CM2-205-010 8Z-CM2-607-010 8Z-CM2-007-010 8Z-CM2-016-010 8Z-CM2-015-010 8Z-CM2-014-010 8Z-CM2-013-010 8Z-CM2-012-010 8Z-CM2-011-010 8Z-CM2-207-010 8Z-CM2-201-010 8Z-CM2-204-010 8Z-CM2-640-010 8Z-CM2-202-010 8Z-CM2-203-010 87-A90-086-010 87-A60-178-010

COVER, CASS EX HLDR,CASS WINDOW,TUNING EZ CABI,FR EX ASSY (S) SPR-T,CASS GEAR,CASS HLDR,GEAR CASS POINTER, COVER, POINTER SPKR,F 4 4OHM KNOB,RTRY TUNING KEY,CASS REC KEY,CASS PLAY KEY,CASS REW KEY,CASS FF KEY,CASS STOP KEY,CASS PAUSE PLATE,REC GEAR,TUNING HLDR,BAND BAR-ANT,AM HLDR,BAR-ANT BLIND,CASS COVER,AC-SOCKET JACK,AC E W/SW

8Z-CM2-605-010 8Z-CM2-023-010 8Z-CM2-032-010 88-CS8-625-010 8Z-CM2-003-010 8Z-CM2-005-010 8Z-CM2-608-010 85-CM1-211-010 8Z-CM2-206-010 85-CM1-212-010 8Z-CM2-038-010 8Z-CM2-037-010 8Z-CM2-036-010 87-741-095-410 87-751-074-410

PT,E ZCM-2 CABI,REAR EZ KNOB,SL BEAT MIC,ECM KNOB,SL FUNCTION KNOB,RTRY VOLUME ANT,ROD FM ZCM-2 SPR,BATT(-) SPR,BATT (+) SPR,BATT(+/-) LID,BATT EX COVER, HANDLE EX HANDL,EX UT2+3-8 GLD VT2+2.6-8 W/0 CUT V+2.6-6 UT2+3-16(W/O) SLOT SCEW,ST3-10

C 87-261-073-410 D 87-741-100-410 E 87-651-096-410

COLOR NAME TABLE
Basic color symbol Color Basic color symbol Color Basic color symbol Color B Black C Cream D Orange G Green H Gray L Blue LT Transparent Blue N Gold P Pink R Red S Silver ST Titan Silver T Brown V Violet W White WT Transparent White Y Yellow YT Transparent Yellow LM Metallic Blue LL Light Blue GT Transparent Green LD Dark Blue DT Transparent Orange

11

MECHANISM EXPLODED VIEW 1/1

F G E.HEAD 1 E 2

LUG PLATE R.P. HEAD

3 47 8 a 9 10 J L

4 5

M 6 7

48

11

12 H 49 20 21 22 18 23 19 31 30 b 24 37 25 26 27 28 29 39 D 40 K 42 43 MOTOR BRACKET N 41 I D B B 45 38 C C a 36 A b 14

15 16 17

13 34 32 33 35

44

N 46

50

12

TAPE MECHANISM PARTS LIST 1/1

REF. NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

KANRI NO. S1-921-030-040 S1-821-030-070 S1-921-030-030 S1-921-260-050 S1-921-265-020 S1-921-140-370 S1-921-140-340 S1-921-030-010 S1-921-143-010 S1-921-140-180 S1-921-260-4A0 S1-921-043-010 S1-921-130-010 S1-921-140-130 S1-921-140-100 S1-921-140-120 S1-921-140-110 S1-921-140-150 S1-821-011-590 S1-921-140-140 S1-921-140-200 S1-921-140-090 S1-921-140-080 S1-921-140-030 S1-921-140-190 S1-921-140-040 S1-921-140-050 S1-921-140-060 S1-921-140-070 S1-829-100-100 S1-921-053-020 S1-821-100-690 S1-821-100-700 S1-921-050-060 S1-921-053-010

PART NO.

DESCRIPTION HEAD BASE AZIMUTH SPRING PANEL P SPRING GEAR PLATE SPRING GEAR PLATE ASSY P ARM COLLER P ARM HEAD PANEL BASE ASSY M CONTROL SPRING SENSING LEVER PINCH ROLLER ARM ASY EJECT SLIDE LEVER P CONTROL SPRING PAUSE LEVER PAUSE LEVER SPRING PAUSE STOPPER BUTTON LEVER SPRING(B) E KICK LEVER BUTTON LEVER SPRING(A) PR STOPPER SWITCH ACTUATOR PUSH BUTTON ACTUATOR REC BUTTON LEVER PLAY BUTTON LEVER REW BUTTON LEVER FF,BUTTON REVER STOP BUTTON LEVER PAUSE BUTTON LEVER BACK TENSION SPRING SUPPLY REEL ASSY RECORD SAFETY LEVER FF GEAR SENSOR TAKE UP REEL ASSY

REF. NO 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 A B C D E F G H I J K L M N

KANRI NO. S1-821-100-980 S1-921-015-010 S1-921-140-210 S1-921-073-020 S1-921-070-030 S1-921-260-020 S1-921-140-160 S1-921-093-030 S1-921-090-040 S1-820-130-060 S1-921-120-010 S1-921-030-050 S1-921-030-100 S6-401-011-490 S1-010-260-800 S9-179-000-000 S1-821-120-020 S9-679-000-000 S9-999-180-090 S9-004-000-000 S9-115-000-000 S9-922-000-000 S9-P05-200-610 S9-422-000-000 S9-999-030-130 S9-786-000-000 S9-999-000-030 S9-999-200-410 S9-180-000-000

PART NO.

DESCRIPTION PACK SPRING CHASSIS ASSY REC BUTTON LEVER SPRING RF CLUTCH ASSY RF BELT CAM GEAR E ACTUATOR SPRING FLYWHEEL ASSY MAIN BELT MOTOR RUBBER MOTOR PULLEY MG ARM MG ARM SPRING LEAF SW MSW-1541T MOTOR EG530AD-6B C TAP SCREW M2-3 MOTOR COLLER SCREW P TAP SCREW M2-5 TAPPING SCREW(CAMERA)M2-4.5 SCREW M2-6 + BIND SCREW M2-3 AZIMUTH SCREW M2-8 SCREW,TAP S M 2-6 P WASHER CUT 1.2-3.8-0.3 P WASHER CUT 1.45-3.8-0.5 P P P C WASHER 2-3.5-0.3 WASHER2.1-4-0.13 TAP SCREW M2-3 TAP SCREW M2-4

13

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