Aiwa WR-A50 Service Manual

WR-A50

YH(S ), YL(S), YZ(S)

SERVICE MANUAL

RADIO RECEIVER

S/M Code No. 09-017-357-0N1

DATA

SPECIFICATIONS

Design and specifications are subject to change without

•

notice

.

-2-

ACCESSORIES/PACKAGE LIST-1/1

REF. NO PART NO. KANRI DESCRIPTION

1 8B-RM3-910-010 IB,SW GUIDE
1 8B-RM3-902-010 IB,YH(ECC)S<YZSC,YHSCC>
1 8B-RM3-904-010 IB,YL(3L)C<YLSCC>
1 8B-RM3-906-010 IB,YZ(5L)C<YZSC>
1 8B-RM3-905-010 IB,YZ(EGFSI)C<YZSC>

2 87-B30-363-010 HEADPHONE,HP-M046(V)<YZSC>
3 8A-RCL-006-010 CLIP,BELT YU<YZSC>

NO.

-3-

ELECTRICAL MAIN PARTS LIST-1/2

REF. NO PART NO. KANRI DESCRIPTION

NO.

IC

87-A22-011-010 IC,TA2003P
87-002-232-080 IC,NJM2073M

TRANSISTOR

89-508-824-080 CHIP FET,2SK882
89-341-165-080 CHIP TRANSISTOR 2SC4116GR
89-115-884-080 CHIP -TRANSISTER 2SA1588Y
87-026-467-080 TR,HN1C01F (0.3W)
89-342-153-080 TR,2SC4215

89-113-625-080 TR,2SA1362GR(120MHZ,0.

DIODE

87-020-465-080 DIODE,1SS133 (110MA)
87-A40-633-040 C-VARI-CAP,1SV160
87-A40-822-040 C-DIODE,CRS01

MAIN C.B

BPF101 87-A90-749-010 FLTR,GFMB5
C101 87-012-199-080 CAP 220P
C102 87-012-188-080 C-CAP,U 47P-50 CH
C103 87-012-188-080 C-CAP,U 47P-50 CH
C106 87-012-165-080 CAP 3P

C116 87-012-268-080 C-CAP,U 330P-50 B
C118 87-012-188-080 C-CAP,U 47P-50 CH
C119 87-A10-031-080 C-CAP,U 0.01-25 KB
C120 87-A10-031-080 C-CAP,U 0.01-25 KB
C121 87-A10-031-080 C-CAP,U 0.01-25 KB

C122 87-A10-031-080 C-CAP,U 0.01-25 KB
C123 87-A10-031-080 C-CAP,U 0.01-25 KB
C124 87-A10-031-080 C-CAP,U 0.01-25 KB
C125 87-010-829-080 CAP, U 0.047-16
C126 87-012-167-080 C-CAP,U 5P-50 CH

C128 87-A10-031-080 C-CAP,U 0.01-25 KB
C129 87-A10-031-080 C-CAP,U 0.01-25 KB
C131 87-A10-263-080 C-CAP,U 0.1-16ZF
C132 87-012-168-080 C-CAP,U 6P-50 CH
C133 87-012-193-080 C-CAP,U 82P-50 CH

C134 87-012-176-080 CAP 15P
C135 87-012-337-080 C-CAP,U 56P-50 CH
C137 87-012-180-080 C-CAP,U 22P-50 CH
C138 87-012-149-080 C-CAP,S 30P-50 CH
C139 87-012-172-080 CAPACITOR CHIP U 10P CH

C140 87-012-165-080 CAP 3P
C141 87-012-282-080 CAP, U 4700P-50
C142 87-012-182-080 C-CAP,U 27P-50 CH
C143 87-016-526-080 C-CAP,S 0.47-16 BK
C144 87-A10-031-080 C-CAP,U 0.01-25 KB

C145 87-A10-031-080 C-CAP,U 0.01-25 KB
C147 87-A10-031-080 C-CAP,U 0.01-25 KB
C148 87-010-077-080 CAP,E 33-10 5L
C149 87-A10-031-080 C-CAP,U 0.01-25 KB
C150 87-010-064-080 CAP,E 100-10

REF. NO PART NO. KANRI DESCRIPTION

NO.

C151 87-A10-031-080 C-CAP,U 0.01-25 KB
C201 87-012-279-080 C-CAP,U 2700P-50 B
C202 87-A10-031-080 C-CAP,U 0.01-25 KB
C203 87-012-274-080 CHIP CAP,U 1000P-50B
C205 87-012-359-080 C-CAP,S 0.68-10 FZ

C206 87-010-829-080 CAP, U 0.047-16
C211 87-012-359-080 C-CAP,S 0.68-10 FZ
C212 87-012-359-080 C-CAP,S 0.68-10 FZ
C213 87-012-359-080 C-CAP,S 0.68-10 FZ
C214 87-012-359-080 C-CAP,S 0.68-10 FZ

C215 87-010-788-080 C-CAP,U 0.033-2.5F
C217 87-A10-263-080 C-CAP,U 0.1-16ZF
C218 87-010-231-080 CPA,E 220-10 KS
C219 87-010-267-080 CAP,E 47-10 105 KM
CF101 87-A92-181-010 FLTR, SFE 10.7MA19

CF102 85-HRL-611-010 FLTR,SFU 455B
CF104 85-HRL-611-010 FLTR,SFU 455B
CF105 87-A90-621-010 FLTR,SFE 10.7MA5Z
J101 8B-RM3-624-010 JACK, ST W/SW
J102 8B-RM3-625-010 JACK,DC

L101 8B-RM3-606-010 COIL,SW
L102 8B-RM3-608-010 IFT,SW ANT
L103 8B-RM3-608-010 IFT,SW ANT
L104 8B-RM3-608-010 IFT,SW ANT
L106 8B-RM3-608-010 IFT,SW ANT

L107 87-003-142-080 COIL,3.3UH LAL02
L108 8B-RM3-607-010 BAR-ANT,MW
L109 87-003-241-080 C-COIL,S 4.7UH
L111 8B-RM3-609-010 IFT,MW OSC
L112 8B-RM3-610-010 IFT,SW OSC

L113 8B-RM3-605-010 COIL,FMRF
L114 8B-RM3-604-010 COIL,FM OSC
L201 87-003-045-080 CHOKE COIL, 22UH K LAL04
L202 87-005-894-080 C-COIL,S 1UH K LK2125
S102 87-A91-152-010 SW,SL 1-1-2 SSSS212-11-A

SW101 8B-RM3-623-010 SW,4C-8P
T101 8B-RM3-611-010 IFT,SW DET
T102 8B-RM3-613-010 IFT,FM DET
VC101 8B-RM3-603-010 TUN-CAP,20P-160P
VR201 87-024-326-010 VOLUME 20KA

X101 8B-RM3-615-010 VIB,XTAL 14.650MHZ
X102 8B-RM3-616-010 VIB,XTAL 16.800MHZ
X103 8B-RM3-617-010 VIB,XTAL 20.400MHZ
X104 8B-RM3-618-010 VIB,XTAL 22.640MHZ
X105 8B-RM3-619-010 VIB,XTAL 26.025KHZ

X106 8B-RM3-621-010 VIB,XTAL 28.525MHZ
X107 8B-RM3-622-010 VIB,XTAL 32.350KHZ

SUB C.B

LED101 87-017-829-070 C-LED,SEC 1901C ORN
LED102 87-017-829-070 C-LED,SEC 1901C ORN
LED103 87-017-828-070 C-LED,SEL 1401C GRN
S103 87-A91-780-180 C-SW,TACT LS15B3T
S104 87-A91-780-180 C-SW,TACT LS15B3T

-4-

ELECTRICAL MAIN PARTS LIST-2/2

• Regarding connectors, they are not stocked as they are not the initial order items.
The connectors are available after they are supplied from connector manufacturers upon the order is received.

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

1608
2125

3216

5%
5%

5%

Symbol

CJ
CJ

CJ

Figure

Value of resistor

Form

L

Dimensions (mm)

t

W

0.55

Resistor Code

108
118

128

LW t

1.0 0.5 0.35 104

1.6 0.8 0.45
2 1.25 0.45

3.2

1.6

: A
: A

-5-

BLOCK DIAGRAM-1/1

BUFFER

AM

MIX

AM

IF INFMMIXFMIF IN

SPEAKER

CN101

-6-

WIRING-1/2 (MAIN)

101112131415161718192021222324

1234567892526272829303132

A

B

C

DC

DC3V

SPEAKER

Ref No.

J102

JR201

CN101

JR103

8

1

45

C2 B1 E1
E2 B2 C1

X2

D

E

F

G

H

I

J

K

JR102

L

VOL

M

N

O

P

Q

R

S

T

U

-7-

WIRING-2/2 (SUB)

123456789101112131415

A

B

C

D

E

F

G

H

1

I

J

7

K

L

M

N

O

P

Q

-8-

R

S

T

U

SCHEMATIC DIAGRAM-1/1 (MAIN, SUB)

-9-

X

TRANSISTOR ILLUSTRATION-1/1

C

S

C1

B2

E2

B

E

2SA1362
2SA1588
2SC4116
2SC4215

D

G

2SK882

E1

B1

C2

HN1C01F

-10-

ELECTRICAL ADJUSTMENT-1/1

MAIN C.B (PARTS SIDE)

L104 L103 L102

VC101B

VC101A

VC101D

VC101C

L106

7

63

L112 T102

L111

11PIN
IC101

L114

L113

1245 14

< TUNER SECTION >

1. AM Frequency Range Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: VC101B,L111

VC101B................ 515kHz±5kHz(YHSCC,YLSCC MODEL)

VC101B................................. 515kHz±3kHz(YZSC MODEL)

L111 ................. 1635kHz±20kHz(YHSCC,YLSCC MODEL)

L111 .................................. 1635kHz±10kHz(YZSC MODEL)

2. AM Tracking Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: L108,VC101A

L108 ............................................................................. 600kHz

VC101A ..................................................................... 1400kHz

3. FM IF Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: T102

T102 ........................................................................... 10.7MHz

4. FM Frequency Range Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: L114,VC101D

L114 ................. 87MHz±0.5MHz(YHSCC,YLSCC MODEL)

L114 ........................ 87.4MHz+0.1/-0.2MHz(YZSC MODEL)

VC101D ......... 109MHz±0.5MHz(YHSCC,YLSCC MODEL)

VC101D ....................... 108.3MHz±0.2MHz(YZSC MODEL)

Test point

5. FM Tracking Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: L113,VC101C

L113 .............................................................................. 88MHz

VC101C...................................................................... 108 MHz

6. SW Frequency Range Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: L112

L112 (SW1) .................................................. 3.595MHz±5KHz

7. SW Tracking Adjustment
Settings: • Test point IC101(TA2003P)11PIN

• Adjustment location: L102,L103,L104,L106

L102(SW1)............................................................... 3.625MHz

L103(SW3)............................................................... 9.375MHz

L104(SW5).................................................................... 15MHz

L106(SW7)............................................................. 21.325MHz

L108

2

-11-

IC BLOCK DIAGRAM-1/1
IC, TA2003P

FM IN

AM

RF

FM
RF

QUADDET OUTAM OSCFM OSCBANDFM RF OUTAM IN

1516 14 13 12 11 10

FM/AM

SW

FM
MIX

FM

OSC

AM

MIX

AM

OSC

AGC

AM

DET

FM

DET

FM
I F

GND

9

FM
I F

87654321

GND FM MIX AM MIX AGC VCC AM IF IN FM IF IN

IC, NJM2073M

1+INPUT
1-INPUT

2+INPUT

2-INPUT

7
8

6
5

VCC

2

1

3

OUT1

OUT2

GND

-12-

4

MECHANICAL EXPLODED VIEW-1/1

20

23

F

22

PWB

G

PWB

17

7

A

12

10

11

6

2

8

5

9

D

13

18

E

A

19

21

C

16

B

14

12

15

24

25

1

4

3

-13-

MECHANICAL PARTS LIST-1/1

REF. NO PART NO. KANRI DESCRIPTION

NO.

1 8B-RM3-010-010 WINDOW,DIAL
2 8B-RM3-001-010 CABI,FRONT
3 8B-RM3-015-010 STRAP,
4 8B-RM3-005-010 BTN,AM/FM
5 8B-RM3-011-010 LENS,LED

6 87-A92-008-010 SPKR,36 8OHM SP99091A-1
7 8B-RM3-016-010 PLATE,DIAL
8 8B-RM3-012-010 POINTER,DIAL ASS’Y
9 8B-RM3-202-010 HLDR,POINTER
10 87-096-088-010 DIAL STRING

11 8B-RM3-206-010 SPR,DIAL
12 8B-RM3-201-010 PULLEY,DIAL
13 8B-RM3-203-010 DRUM,PVC
14 8B-RM3-009-010 KNOB,RTRY TUN
15 8B-RM3-007-010 KNOB,SL SW

16 8B-RM3-006-010 KNOB,SL POW
17 8B-RM3-002-010 CABI,MIDL
18 8B-RM3-607-010 BAR-ANT,MW
19 8B-RM3-205-010 BAT-CONTACT,(-)
20 8B-RM3-008-010 KNOB,RTRY VOR

REF. NO PART NO. KANRI DESCRIPTION

NO.

21 8B-RM3-204-010 BAT-CONTACT,(+)
22 8B-RM3-207-010 HLDR,ROD-ANT
23 8B-RM3-614-010 ANT,ROD
24 8B-RM3-003-010 CABI,REAR
25 8B-RM3-004-010 LID,BATT

A 87-741-035-410 UT2+2-6
B 87-353-034-210 VT2+2-5
C 87-354-529-310 VT2+1.7-4.0 CR
D 87-067-271-010 SCREW,VFT2+1.7-4
E 87-261-071-410 V+2.6-4

F 87-265-531-310 SCREW,V+1.7-5
G 87-262-509-310 V+1.4-4 BLK.

-14-

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 GM Metallic Green

YM Metallic Yellow DM Metallic Orange PT Transparent Pink

LA Aqua Blue GL Light Green

-15-

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

H251941

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