Aiwa TPIC-680 Schematic

TP-IC680

YH1

SERVICE MANUAL

CASSETTE RECORDER

This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-99A-337-1T1).

BASIC TAPE MECHANISM : TN-9XR-112

S/M Code No. 09-99A-337-1R1

REVISION

DATA

SPECIFICATIONS

<Cassette recorder section>
Track system 2 tracks 1 channel, monaulal (Recording)

4 tracks 2 channels, stereo (Playback)

Frequency response 250 - 8,000 Hz (EIAJ Recording)
Recording system AC bias
Erasing system Magnet erasure

<Built-in IC section>
Frequency response 400 - 3,500 Hz
Recording time 10 seconds x 2 (IC repeat 60 sec/10 sec switch is set to 10 sec)

60 seconds x 2 (IC repeat 60 sec/10 sec switch is set to 60 sec)

<Common section>
Microphone Electret condenser microphone (monaural)
Maximum output 300 mW (EIAJ 4 ohms/DC)

10 mW+10 mW (EIAJ/16 ohms)

Input jack EXT MIC jack (monaural mini-jack) (1)
Output jack PHONES jack (stereo mini-jack) (1)
Other jack DC 3 V jack
Speaker Diameter 50 mm, 4 ohms (monaural)
Power sources DC 3 V using two R6 (size AA) dry cell batteries

AC house current using the AC adaptor Aiwa AC-D302

Battery life

Battry EIAJ Recording EIAJ 10 mW
Manganese (R6P) Batteries Approx. 5 hrs Approx. 3.5 hrs
Alkaline (LR) batteries Approx. 18.5 hrs Approx. 13.5hrs

Dimensions 113.5 (W) x 90 (H) x 38.4 (D) mm

(41/2 x 35/8 x 19/16 in.)

Weight Approx. 171 g, 5.9 oz (excluding batteries)

ACCESSORIES LIST

• Design and specifications are subject to change without notice.

REF. NO PART NO. KANRI DESCRIPTION

1 8Z-HT5-905-010 IB,YH(ECK)C
2 87-B30-240-010 HEADPHONE,HP-M035
3 87-PD3-050-010 STRAP,HAND

NO.

2

ELECTRICAL MAIN PARTS LIST

REF. NO PART NO. KANRI DESCRIPTION

IC
87-A20-399-010 IC,LA4168M

87-A20-461-040 IC,MM1336DF
87-002-649-080 IC,NJM324M
87-017-506-080 IC,PST600 JMT
87-A20-755-080 C-IC,AK93C45AF

87-017-643-080 IC,MM1206XFF
87-A21-450-040 C-IC,BU4053BCFV
87-A21-409-010 C-IC,ISD4002-120ED
87-A21-408-010 C-IC,MC68HC705P6CDW
87-A21-411-040 C-IC,SB2020P-29332AK

TRANSISTOR
89-508-804-080 CHIP FET 2SK880Y

87-A30-288-040 C-TR,DTC114YKA
89-333-266-080 CHIP TR,2SC3326B
89-327-125-080 CHIP TR,2SC2712GR
89-342-132-080 TR,2SC4213B

89-341-165-080 CHIP TRANSISTOR 2SC4116GR
87-A30-144-080 C-TR,2SC4081R
87-026-210-040 C-TR,DTC144EKA
89-115-864-080 CHIP TRANSISTOR 2SA1586Y
87-026-337-080 C-TR,DTA144TUA

89-332-654-080 CHIP TRANSISTOR, 2SC3265Y

DIODE
87-A40-529-010 DIODE,1GWJ42

87-001-221-080 CHIP DIODE,ISS319
87-001-553-080 C-DIODE 1SS322
87-020-339-080 CHIP DIODE,1SS226
87-020-027-080 CHIP-DIODE 1SS184

87-001-166-080 DIODE,1SS301

MAIN C.B
C101 87-A10-036-080 C-CAP,TN 47U-6.3 B2

C102 87-016-462-080 C-CAP,S 1-16 F
C103 87-010-186-080 CAP,CHIP 4700P
C104 87-010-184-080 CHIP CAPACITOR 3300P(K)
C105 87-A10-019-080 C-CAP,TN 10-6.3 A

C106 87-015-677-010 CAP,E 100-6.3
C107 87-016-296-080 C-CAP,TN 22-6.3
C108 87-016-462-080 C-CAP,S 1-16 F
C109 87-016-462-080 C-CAP,S 1-16 F
C110 87-010-187-080 CAP CHIP S5600P

C111 87-016-462-080 C-CAP,S 1-16 F
C112 87-016-503-080 C-CAP,TN 4.7-6.3
C113 87-016-462-080 C-CAP,S 1-16 F
C114 87-A10-593-080 C-CAP,TN 1-16 A2 MSV
C115 87-016-462-080 C-CAP,S 1-16 F

C116 87-A10-036-080 C-CAP,TN 47U-6.3 B2
C117 87-016-462-080 C-CAP,S 1-16 F
C118 87-A10-264-080 C-CAP,S 0.1-16ZF
C119 87-010-197-080 CAP, CHIP 0.01 DM
C120 87-016-462-080 C-CAP,S 1-16 F

C121 87-015-908-080 CAP,E 220-6.3
C122 87-016-462-080 C-CAP,S 1-16 F
C123 87-A10-264-080 C-CAP,S 0.1-16ZF
C124 87-010-193-080 CHIP CAPACITOR,0.033
C125 87-016-462-080 C-CAP,S 1-16 F

C126 87-016-462-080 C-CAP,S 1-16 F
C127 87-A10-264-080 C-CAP,S 0.1-16ZF
C128 87-A10-036-080 C-CAP,TN 33-6.3
C129 87-A10-264-080 C-CAP,S 0.1-16ZF
C130 87-016-491-080 C-CAP,S 0.22-16 FZ

C201 87-016-462-080 C-CAP,S 1-16 F
C202 87-016-462-080 C-CAP,S 1-16 F

NO.

REF. NO PART NO. KANRI DESCRIPTION

C203 87-010-178-080 CHIP CAP 1000P
C204 87-010-178-080 CHIP CAP 1000P
C205 87-016-296-080 CAP,E 22-6.3
C206 87-010-197-080 CAP, CHIP 0.01 DM
C207 87-016-462-080 C-CAP,S 1-16 F

C208 87-A10-019-080 C-CAP,TN 10-6.3 A
C209 87-010-213-080 CAP, CHIP 0.015-25
C210 87-016-296-080 C-CAP,TN 22-6.3
C211 87-015-908-080 CAP,E 220-6.3
C212 87-A10-264-080 C-CAP,S 0.1-16ZF

C213 87-016-491-080 C-CAP,S 0.22-16 FZ
C214 87-016-462-080 C-CAP,S 1-16 F
C215 87-A10-019-080 C-CAP,TN 10-6.3 A
C216 87-015-213-080 CAP, CHIP 0.015-25
C217 87-016-296-080 C-CAP,TN 22-6.3

C218 87-A10-264-080 C-CAP,S 0.1-16ZF
C219 87-016-491-080 C-CAP,S 0.22-16 FZ
C220 87-010-178-080 CHIP CAP 1000P
C221 87-010-794-080 CHIP CAPACITOR TN 0.1-20(A2)
C222 87-010-182-080 C-CAP,S 2200P-50 B

C223 87-010-182-080 C-CAP,S 2200P-50 B
C224 87-016-370-010 CAP,E 470-6.3 M RS
C225 87-016-462-080 C-CAP,S 1-16 F
C226 87-012-358-080 C-CAP,S 0.47
C227 87-012-358-080 C-CAP,S 0.47

C301 87-010-197-080 CAP, CHIP 0.01 DM
C303 87-A10-264-080 C-CAP,S 0.1-16ZF
C304 87-A10-593-080 C-CAP,TN 1-16 A2 MSV
C305 87-016-462-080 C-CAP,S 1-16 F
C307 87-A10-036-080 C-CAP,TN 47U-6.3 B2

C308 87-010-197-080 CAP, CHIP 0.01 DM
C309 87-010-197-080 CAP, CHIP 0.01 DM
C310 87-A10-034-080 C-CAP,TN 33-6.3
C311 87-016-491-080 C-CAP,S 0.22-16 FZ
C312 87-A10-264-080 C-CAP,S 0.1-16ZF

C313 87-012-358-080 C-CAP,S 0.47
C315 87-010-197-080 CAP, CHIP 0.01 DM
C316 87-010-316-080 C-CAP,S 33P-50 CH
C317 87-010-316-080 C-CAP,S 33P-50 CH
C319 87-010-197-080 CAP, CHIP 0.01 DM

C320 87-010-197-080 CAP, CHIP 0.01 DM
C321 87-A10-036-080 C-CAP,TN 47U-6.3 B2
C322 87-010-182-080 C-CAP,S 2200P-50 B
C501 87-010-179-080 CAP,CHIP S B1200P
C502 87-010-197-080 CAP, CHIP 0.01 DM

C503 87-010-184-080 CHIP CAPACITOR 3300P(K)
C504 87-010-197-080 CAP, CHIP 0.01 DM
C505 87-A10-036-080 C-CAP,TN 47U-6.3 B2
J101 84-TM1-630-010 JACK,3.5 HSJ1493-05
J102 87-A61-032-010 JACK,3.5 BLK ST W/SW HSJ1494

J201 87-A60-849-010 JACK,DC DIA 2.75 BLK
L301 87-003-188-080 COIL 22UH
L302 87-003-188-080 COIL 22UH
L303 87-003-188-080 COIL 22UH
L501 87-007-189-010 COIL OSC

S301 87-036-273-080 CHIP TACT SWITCH SKQGADE010
SW101 87-A90-520-010 SW,SL 2-4-2SHORTING
SW102 87-031-816-010 SLIDE SWITCH
SW103 87-A90-520-010 SW,SL 2-4-2SHORTING
SW201 87-A90-520-080 REC SWITCH

SW301 87-031-816-010 SLIDE SWITCH
SW302 87-031-816-010 SLIDE SWITCH
TH101 87-A90-855-080 C-THMS,SC20-3K102K
TH102 87-A90-307-080 C-THMS,K39G220
VR101 87-A90-308-010 VR,RTRY 3KB XV81

VR102 87-A90-527-010 SFR,5K H VZ066L3
VR201 87-A90-314-010 VR,RTRY 10K H
X301 87-A70-147-080 C-VIB,CER 2.0MHZ PBRC-A

KEY C.B

NO.

REF. NO PART NO. KANRI DESCRIPTION

C401 87-016-462-080 C-CAP,S 1-16 F
C402 87-010-197-080 CAP, CHIP 0.01 DM
C403 87-010-197-080 CAP, CHIP 0.01 DM
LED1 87-A90-276-080 C-LED,SML-210MT GRN
LED2 87-A90-278-080 C-LED,SML-210VT RED

LED3 87-017-827-070 C-LED,SEC 1201C RED
LED4 87-017-828-070 C-LED,SEL 1401C GRN
LED5 87-017-829-070 C-LED,SEC 1901C ORN
LED6 87-017-827-070 C-LED,SEC 1201C RED
S401 87-A90-665-180 TACT SWITCH

S402 87-A90-665-180 TACT SWITCH
S403 87-A90-665-180 TACT SWITCH
S404 87-A90-665-180 TACT SWITCH

NO.

CHIP RESISTOR PART CODE

Chip Resistor Part Coding

88

A

Resistor Code

Chip resistor

Wattage Type Tolerance
1/16W 1005 5% CJ

1/16W
1/10W

1/8W

TRANSISTOR ILLUSTRATION

1608
2125

3216

C

B

E

2SA1586
2SC2712
2SC3265
2SC3326
2SC4081
2SC4116
2SC4213
DTA144TUA
DTC114YKA
DTC144EKA

5%
5%

5%

Symbol

CJ
CJ

CJ

Figure

Value of resistor

Form

L

Dimensions (mm)

W

S

D

2SK880

LW t

1.0 0.5 0.35 104

t

1.6 0.8 0.45
2 1.25 0.45

1.6

0.55

3.2

G

Resistor Code

108
118

128

: A
: A

43

SCHEMATIC DIAGRAM

65

WIRING-1 (KEY C.B SECTION)

G

F

KEY C. B

E

D

LED4 F
LED5 M
LED6 E

C

B

A

A

LED3

TAPE REC

OPE/BATT

KEY C. B

CN401

TO A MAIN C. B

CN301

1357910

CONTINUE

S401,LED2

PRACTICE

S403

8

5

14

TEACHER

S402,LED1

STUDENT

S404

NOTE
Qxxx =

Dxxx =

LEDx =

Cxxx =
Rxxx =

7654321
7654321

C

E

B

B

C

D

E

F

G

7

WIRING-2

1

A

B

234567

MAIN C. B

WHT
RED

YEL

SHIELD

RPH1

REC/PLAY HEAD

C

C212

BLK

C318

C224

D

BLK

(YEL)

WHT

(ORG)

BLK

E

SP

BRN

MIC

REC/PLAY HEAD

WHT

YEL
RED

SHIELD

TO KEY C. B

BLK

110

BLK

BRN

MOTOR

POWER
SWITCH

F

MOTOR

BATTERY

R6(AA)

G

BATTERY

R6(AA)

KEY C. B

SP1

BLK

M1

BRN

SW1

BLK

BRN

SP

SPEAKER

4ohm

SP

50mm 1W

110

TO MAIN C. B

POWER
SWITCH

H

BLK

(YEL)

WHT

(ORG)

ECM1

MIC

MIC

MIC

I

J

8

WIRING-3 (MAIN C.B SECTION)

J201

DC3V

MAIN C. B

2345678 65487321

MAIN C. B

1

SW301

IC REPEAT

60SEC

10SEC

SW302

IC REPEAT

OFF

ON

SW101

NFR

ON

OFF

S301

RESET

8

10

12
14

1

7
5

3
1

15

202528

51014

C224

A

SW103

ON

OFF

A

B

C

D

D201

SW301

J201

B

SW302

C

D

D201

C224

4

S

81

5

D301

2
1

D102

CN301

V-SENSOR

TO B
KEY C. B
CN401

15

20

25

14

8

10

5

128

45

E

SW201

REC

PB

E

F

G

F

G

L501

X301

SW201

SW201

-C

1357910

L501

-A

-D

1

2

3

1

-B

NOTE
Qxxx =

Qxxx =

S

C

B

G

SD

E

Dxxx =

Lxxx =
Cxxx =
Cxxx =

Rxxx =
JWxxx =
THxxx =

SW102
PAUSE

OFF

ON

VR102

C121

4

123

VR101

PLAYBACK

SPEED

H

LR

C205

28

25

20

1

1514

5
89

1

52

34

16

S

S

VR201

VOLUME/

C211

1

151015

16

20

C106

30

25

J101

5

10

J102

EXT. MIC

H

J

K

L

M

C205

VR101

C121

VR102

4123

SW102

I

I

J

C211

C106

K

VR201

15234

L

B

A

J101J102

M

V-SENSOR

LEVEL

109

IC BLOCK DIAGRAM

1211

ELECTRICAL ADJUSTMENT

MAIN C.B

2

1

R/P HEAD

1. Azimuth Adjustment
Settings: • Test tape: TTA-330

• Test point: EARPHONE JACK (J102)

• Adjustment location: Azimuth adjustment screw

• PAUSE: OFF

• VOLUME: Maximum.

• PLAYBACK SPEED: Normal
(Speed volume center)

Method: Playback the test tape, and adjust so that the

output (8 kHz) becomes maximum.

2. Tape Speed Adjustment
Settings: • Test tape: TTA-100 (TAPE CENTER)

• Test point: EARPHONE JACK (J102)

• Adjustment location: VR102

• PAUSE: OFF

• VOLUME: Maximum

• PLAYBACK SPEED: Normal
(Speed volume center)

Method: Playback the test tape, and adjust for 3000 Hz

±10Hz

PRACTICAL SERVICE FIGURE

Tape speed: 3000 Hz ± 60 Hz
Wow & flutter: Less than 0.55%
Take-up torque: 20 ~ 50 g-cm (FWD)
F.F torque: More than 55 g-cm
REW torque: More than 55 g-cm
S/N ratio: More than 45 dB (PB)
(Vol: Max - 10 dB) More than 25 dB (R/PB)
Distortion: Less than 3.0% (PB)
(Vol: Max - 10 dB) Less than 5.0% (R/PB)
Noise level: Less than 5.0 mV (PB)
(Vol: Max) Less than 16 mV (R/PB)
Erasing ratio: More than 28 dB (1kHz, 50dB)
Test tape TTA-100

TTA-330

13

MECHANICAL EXPLODED VIEW 1/1

19

38

13

11

SH,COVER
IC BLK PVC

KEY C.B

4

7

8

9

10

12

6

SH,COVER
LED PVC

14

E

E

E

E

20

37

5

SH,SP
RING BLK PVC

15

16

17

TN-9XR-112

SH,
COVER SPEAKER

18

D

1

2

3

29

36

28

30

25

21

C22

C

27

B

26

24

33

MAIN C.B

A

23

31

32

33

B

34

14

35

MECHANICAL MAIN PARTS LIST 1/1

REF. NO PART NO. KANRI DESCRIPTION

1 8Z-HT5-004-010 GRILLE,SPEAKER
2 8Z-HT5-003-010 RING,SPEAKER
3 87-A91-158-110 SPKR,DIA 50 4OHM 1.0W K050NA50
4 8Z-HT5-005-010 WINDOW,CASS
5 8Z-HT5-001-010 LID CASS

6 8Z-HT5-010-010 LENS,BATT/LL INDI
7 8Z-HT5-007-010 GRILLE,MIC
8 8Z-HT5-006-010 PANEL,MIC
9 8Z-HT5-201-010 HLDR,MIC
10 82-TP3-609-010 ECM

11 8Z-HT5-009-010 LENS,LL INDI
12 8Z-HT5-020-010 CAP, LL BTN REC
13 8Z-HT5-202-010 BASE,LL BTN
14 87-HT8-203-010 SPR-P,CASS
15 87-HT8-208-010 SPR-T,LID CASS

16 8Z-HT5-014-010 FRAME CENTER
17 87-040-196-010 COUNTER
18 87-HT8-202-010 HLDR,COUNTER
19 8Z-HT5-022-010 CAP,LL BTN REC/PLAY
20 87-HT8-205-010 LEVER,REC SAFETY

21 8Z-HT6-010-010 BTN,PLAY
22 8Z-HT6-012-010 BTN,FF
23 8Z-HT6-013-010 BTN,REW
24 8Z-HT6-014-010 BTN,STOP
25 8Z-HT6-011-010 BTN,REC

NO.

26 8Z-HT7-203-010 LEVER,PAUSE
27 8Z-HT4-201-010 BAT-CONTACT,(-)
28 8Z-HT7-205-010 BAT-CONTACT,(+)
29 8Z-HT7-007-010 LID,BATT
30 8Z-HT5-002-010 CABI,REAR

31 8Z-HT5-012-010 KNOB,SL LL 45/10
32 8Z-HT5-011-010 KNOB,SL LL ON/OFF
33 8Z-HT7-012-010 FOOT,RUBBER
34 8Z-HT7-008-010 KNOB,SL PAUSE
35 8Z-HT5-013-010 KNOB,SL NFR/V

36 87-HT8-210-010 BELT,COUNTER
37 87-HT8-209-010 SPR-E,REC SAFETY
38 8Z-HT5-021-010 CAP, LL BTN PLAY
A 87-HT8-211-010 VT2+2-18 S-SCREW BLK
B 87-067-769-010 VT2+1.7-8(3) BLK

C 87-067-271-010 SCREW VFT2+1.7-4
D 87-354-529-310 VT2+1.7-4
E 87-351-508-310 VT2+1.4-3.5 BLK

REF. NO PART NO. KANRI DESCRIPTION

NO.

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

15

TAPE MECHANISM EXPLODED VIEW 1/1

16

TAPE MECHANISM PARTS LIST 1/1

REF. NO PART NO. KANRI DESCRIPTION

1 S1-909-013-040 CHASSIS ASSY
2 S1-909-020-190 FR PLATE
3 S1-909-020-090 LOCK PLATE
4 S1-909-020-140 STOP SPRING
5 S1-909-120-030 REC LEVER SPRING

6 S1-909-120-070 REC LEVER
7 S1-909-120-020 MG GUIDE
8 S6-207-100-020 HEAD E TC-230AN(SL)
9 S1-852-140-020 M LUBBER
10 S1-909-030-050 HEAD PANEL

11 S1-909-040-020 P/R SPRING
12 S1-909-030-080 R/C SPRING
13 S1-909-030-070 R/C PLATE
14 S1-909-030-060 TAPE GUIDE
15 S1-852-140-030 M COLLOR

16 S1-944-030-020 HEAD SPRING PLATE
17 S6-202-030-410 RP HEAD MS15R-BA2N1
18 S1-909-020-100 STOP LEVER
19 S1-909-110-040 AUTO LEVER
20 S1-909-110-020 A PUSH ARM

21 S1-909-110-050 M CONTROL SPRING
22 S1-909-060-150 SENSOR SPRING C
23 S1-909-063-030 T REEL ASSY
24 S1-909-060-130 TAKE UP GEAR
25 S1-909-030-090 HP SPRING

26 S1-909-083-050 MOTOR ASSY
27 S1-909-050-130 BRAKE BELT
28 S1-909-043-020 PINCH ROLLER ASSY
29 S1-909-020-200 FR PLATE SPRING
30 S1-909-020-120 FF LEVER

NO.

REF. NO PART NO. KANRI DESCRIPTION

31 S1-909-053-040 FLYWHEEL ASSY
32 S1-909-080-100 MAIN BELT
33 S1-909-050-100 FL BRACKET
34 S1-909-020-150 R/C LEVER(R)
35 S1-909-020-160 R/C LEVER(F)

36 S1-909-060-120 CAM GEAR
37 S1-909-020-170 R/C BRACKET
38 S1-909-020-110 RWD LEVER
39 S1-909-020-180 FF STOPPER
40 S6-401-011-630 LEAF SW MSW-1541TA

41 S1-909-077-010 RWD GEAR
42 S1-909-020-130 FR SPRING
43 S1-909-120-090 REC SPRING PLATE
44 S1-909-120-100 REC SW LEVER
A S9-C01-174-030 CAMERA 1.7-4

B S9-C01-173-530 CAMERA 1.7-3.5
C S9-P14-203-310 +/- SCREW M2-3.3
D S9-C18-300-100 CAMERA 1.7-3
E S9-P08-173-410 PST 1.7-3.4
F S9-P14-206-320 +/- SCREW M2-3.6

G S9-W02-300-100 P WASHER CUT 1.2-3.8-0.3
H S9-W08-350-200 LUMILER WASHER CUT 0.98-3-0.3
I S9-W05-200-600 HL WASHER 1.16-3-0.2
J S9-W05-200-100 HL WASHER 1.55-3-0.13
K S9-C16-171-410 CAMERA 1.7-1.4

NO.

17

2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:[phone]

737004

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