Aiwa HS-TA493 User manual

SERVICE MANUAL
HS-TA493 YU,YH,YJ,YZ
STEREO RADIO CASSETTE PLAYER BASIC TAPE MECHANISM : 8ZM-3 P2N
S/M Code No. 09-994-405-5R1
REVISION
JAZZ
POP
ROCK
CLASSIC
TA493
AM FM

 Design and specifications are subject to change without
notice.
SPECIFICATIONS
Frequency range AM: 530  1,710 kHz<YU>
AM: 530  1,605 kHz<YH,YJ,YZ>
FM: 87.5  108 MHz
Maximum output 12 mW + 12 mW (EIAJ/32Ω)<YU,YH,YJ>
4 mW + 4 mW (EIAJ/32Ω)<YZ>
Power source DC 3V using two size AA (R6) batteries
AC house current using the optional AC adaptor
AIWA AC  D302
Maximum dimensions 112 (W) x 88 (H) x 32.5 (D) mm
(41/2 x 31/2 x 15/16in.)
Weight Approx.135g (4.7 oz) (excluding batteries)
2
2SC2712
RN1411
TRANSISTOR ILLUSTRATION
BE
C

DESCRIPTIONREF.NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO. DESCRIPTIONREF. NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO.
ELECTRICAL MAIN PARTS LIST
IC
87-A20-461-040 IC,MM1336DF
87-A20-851-040 C-IC,TA2111F
87-017-643-080 IC,MM1206XF
TRANSISTOR
87-026-264-080 C-TR,RN1411
89-327-125-080 CHIP TR,2SC2712GR
DIODE
87-A40-630-040 C-DIODE, RB411D
87-020-027-080 CHIP-DIODE 1SS184
MAIN C.B
BPF201 87-A90-749-010 FLTR,GFMB5
C101 87-010-179-080 CAP,CHIP S B1200P
C102 87-010-179-080 CAP,CHIP S B1200P
C105 87-010-501-040 E/CAP GAS 47-4
C106 87-010-501-040 E/CAP GAS 47-4
C107 87-010-213-080 C-CAP,S 0.015-50 B
C108 87-010-213-080 C-CAP,S 0.015-50 B
C109 87-010-178-080 CHIP CAP 1000P
C110 87-010-178-080 CHIP CAP 1000P
C111 87-012-141-080 CHIP-CAPACITOR,0.22-16F
C112 87-012-141-080 CHIP-CAPACITOR,0.22-16F
C115 87-010-503-040 CAP,E 220-4 M 5L SRE
C116 87-010-196-080 CHIP CAPACITOR,0.1-25
C117 87-016-462-080 C-CAP,S 1-16 F
C118 87-010-178-080 C-CAP,S 1000P-50 KB C2012
C119 87-010-196-080 CHIP CAPACITOR,0.1-25
C120 87-010-499-040 CAP,E 22-6.3 GAS
C121 87-010-503-040 CAP,E 220-4 GAS
C122 87-010-502-080 CAP,E 100-4 M 5L SRE
C123 87-010-178-080 C-CAP,S 1000P-50 KB C2012
C124 87-010-196-080 CHIP CAPACITOR,0.1-25
C126 87-010-196-080 CHIP CAPACITOR,0.1-25
C127 87-010-196-080 CHIP CAPACITOR,0.1-25
C131 87-010-179-080 CAP,CHIP S B1200P
C132 87-010-179-080 CAP,CHIP S B1200P
C133 87-016-462-080 C-CAP,S 1-16 F
C134 87-016-462-080 C-CAP,S 1-16 F
C135 87-016-462-080 C-CAP,S 1-16 F
C136 87-016-462-080 C-CAP,S 1-16 F
C140 87-016-461-080 C-CAP,S 0.47-16 ZF
C201 87-010-146-080 CHIP CAP 2PF<YU>
C201 87-010-149-080 C-CAP,5P-50 CH GRM<YH,YJ,YZ>
C202 87-010-312-080 C-CAP,S 15P-50 CH
C203 87-010-147-080 C-CAP,S 3P-50 CH<YU>
C204 87-010-314-080 C-CAP,S 22P-50V<YU>
C204 87-010-315-080 C-CAP,S 27P-50V<YH,YJ,YZ>
C205 87-010-147-080 C-CAP,S 3P-50 CH<YU>
C205 87-010-150-080 C-CAP,S 6P-50 CH<YH,YJ,YZ>
C206 87-010-197-080 CAP, CHIP 0.01 DM
C209 87-010-178-080 CHIP CAP 1000P
C212 87-010-497-040 CAP,E 4.7-35 GAS
C213 87-010-194-080 CAP, CHIP 0.047
C215 87-010-197-080 CAP, CHIP 0.01 DM
C216 87-010-197-080 CAP, CHIP 0.01 DM
C217 87-010-197-080 CAP, CHIP 0.01 DM
C218 87-010-197-080 CAP, CHIP 0.01 DM
C219 87-010-196-080 CHIP CAPACITOR,0.1-25
C220 87-010-195-080 C-CAP,S 0.068-25 F
C221 87-010-196-080 CHIP CAPACITOR,0.1-25
C222 87-016-462-080 C-CAP,S 1-16 F
C223 87-012-157-080 C-CAP,S 330P-50 CH
C224 87-010-503-080 VAP,E 220-4 GAS
C233 87-016-461-080 C-CAP,S 0.47-16F
C241 87-010-178-080 CHIP CAP 1000P
C242 87-010-178-080 CHIP CAP 1000P
C301 87-010-197-080 CAP, CHIP 0.01 DM
C302 87-010-197-080 CAP, CHIP 0.01 DM
C303 87-016-491-080 C-CAP,S 0.22-16 FZ
C304 87-016-491-080 C-CAP,S 0.22-16 FZ
C305 87-016-462-080 C-CAP,S 1-16 F
C306 87-016-462-080 C-CAP,S 1-16 F
C307 87-010-195-080 C-CAP,S 0.068-25 F
C308 87-010-195-080 C-CAP,S 0.068-25 F
C309 87-010-198-080 CAP, CHIP 0.022
C310 87-010-198-080 CAP, CHIP 0.022
C311 87-010-188-080 CAP,CHIP 6800P
C312 87-010-188-080 CAP,CHIP 6800P
C317 87-010-501-040 E/CAP GAS 47-4
C318 87-016-305-040 CAP,E 470-4 M 5L MA
C319 87-010-198-080 CAP, CHIP 0.022
C320 87-010-198-080 CAP, CHIP 0.022
CD201 87-A91-313-080 C-FLTR,CDACV10.7 MG77-A-TC
CF201 87-A90-840-010 FLTR,AM IF PFS455A6
CF202 87-A91-312-010 FLTR,SFE10.7MS 2C10-A
J101 85-HRL-623-010 JACK,3.5 ST BLK
J102 87-A60-849-010 JACK,DC DIA 2.75 BLK
L101 87-003-231-080 C-COIL 1UH
L102 87-003-231-080 C-COIL 1UH
L103 87-003-231-080 C-COIL 1UH
L201 8Z-HRG-606-010 BAR-ANT,MW
L202 8Z-HRG-602-010 COIL,FM RFEX
L203 8Z-HRG-603-010 COIL,FM OSCEX
L204 8Z-HRG-604-010 COIL,AM OSC<YU>
L204 8Z-A50-462-080 C-COIL,AM OSC<YH,YJ,YZ>
L205 87-A90-177-010 IFT,AM IF 5P
LED451 87-017-828-070 C-LED,SEL 1401C GRN
LED452 87-017-829-070 C-LED,SEC 1901C ORN
LED453 87-017-827-070 C-LED,SEC 1201C RED
PVC001 87-A91-194-010 TUN-CAP, 20P-160P HP-22125
R127 87-016-462-080 C-CAP,S 1-16 ZF
S101 8Z-HRB-607-010 SW,SL 2-2-2 SSZZ-S-502(S)
S102 87-A91-077-010 SW,LEAF
S103 87-A91-286-010 C-SW,SL 1-2-2 SS-350-B22B
S104 87-A90-918-010 C-SW,SL 1-1-3 SS-350-B13B
SFR101 87-024-050-010 SEMI-FIXED RESISTOR, 1K
TH101 87-026-256-090 THERMISTOR, HT-100
VR101 87-A91-193-010 VR,RTRY 20KCX2 1 H RK08H1210
W1 87-A80-115-010 F-CABLE, 5P P2
IC BLOCK DIAGRAM
IC, MM1206XF
88
A
Resistor Code
Chip Resistor Part Coding
Figure
Value of resistor
Chip resistor
Wattage Type Tolerance
1/16W
1/10W
1/8W
1608
2125
3216
5%
5%
5%
CJ
CJ
CJ
Form LW t
1.6 0.8 0.45
2 1.25 0.45
3.2 1.6
108
118
128
: A
: A
CHIP RESISTOR PART CODE
0.55
Resistor Code
Dimensions (mm)
Symbol
1/16W 1005 5% CJ
1.0 0.5 0.35 104
Lt
W
43

WIRING - 1 (MAIN)
65
14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14
AA
BB
CC
DD
EE
FF
GG
HH
II
JJ
KK
LL
MM
NN
OO
PP
QQ
RR
SS
TT
UU

SCHEMATIC DIAGRAM - 1 (MAIN)
87

9
ADJUSTMENT
VR101
VOLUME
TC203
TC204
TC201
TC202
PVC1
L202
L203
SFR 101
L205
BAR ANT
L201
3
AMAIN C.B
PHONES
J101
1
R116
R115
3
7
R117
5
5
A
C
B
L204
2 6
2
4
7
4
7
6
PRACTICAL SERVICE FIGURE
<TUNER SECTION>
Sensitivity :
(IHF, THD 3%) FM Less than 17dB [at 88.0MHz]
Less than 17dB [at 98.0MHz]
Less than 17dB [at 108.0MHz]
(S/N 10dB) AM Less than 57dB [at 600kHz]
Less than 56dB [at 1000kHz]
Less than 56dB [at 1440kHz]
S/N Ratio : FM More than 53dB [at 88.0MHz]
More than 53dB [at 98.0MHz]
More than 53dB [at 108.0MHz]
AM More than 25dB [at 600kHz]
More than 27dB [at 1000kHz]
More than 27dB [at 1440kHz]
Intermediate frequency : FM 10.7MHz ± 0.1MHz
AM 455kHz ± 3kHz
FM stereo separation : More than 17dB [at 98.0MHz]
<TAPE SECTION>
Tape speed : 3015Hz ± 60Hz
Wow & flutter : Less than 0.5% (RMS)
Take-up torque : 24 ~ 45g-cm (FWD)
F.F torque : 70~ 150g-cm
Rew torque : 70~ 150g-cm
Back tension : 1.5 ~ 4.0g-cm (FWD)
S/N ratio : More than 40dB
Distortion : Less than 3.0%
Noise level: Less than 5.0mV
(Vol MAX, without tape)
Less than 0.3mV
(Vol MIN, without tape)
Frequency response : 63Hz + 0.5/– 7.5dB ~ 8kHz + 4/–
4dB (NORM)
63Hz + 2/– 6dB ~ 10kHz + 4/– 5dB
(METAL)
Test tape : TTA– 100
TTA– 210
TTA– 310 (METAL)
TTA– 320 (NORM)
10
<TUNER SECTION>
1. AM IF Adjustment
L205........................................... 450kHz
2. AM Frequency Range Adjustment
L204................................ 517kHz±5kHz
TC204.......................... 1750kHz±10kHz
3. AM Tracking Adjustment
L201........................................... 600kHz
TC201...................................... 1400kHz
4. FM Frequency Range Adjustment
L203......................... 87MHz±0.1MHz
TC203.................... 109MHz±0.1MHz
5. FM Tracking Adjustment
L202........................................ 88.0MHz
TC202 ................................... 108.0MHz
<TAPE PLAYER SECTION>
6. Tape Speed Adjustment
Settings: • Test tape : TTA–100 (Tape center)
• Test point : PHONES (J101)
• Adjustment location : SFR101
• MSP : CLASSIC
• TAPE SELECTOR : NORM
• VOLUME : MAX
Method : Play back (FWD) the test tape and adjust
SFR101 so that the frequency becomes
3010Hz±10Hz. Then confirm WOW is less
than 0.50%.
7. GOVERNER Adjustment
Perform the STOP —> PLAY and REVERSE operations
(or PAUSE ON —> OFF) after the motor is replaced.
When the tape starts running smooth, this adjustment
is not necessary. If wow is conspicuous at the beginning
of the tape-run, perform this adjustment following the
procedures below.
1) Solder resistor pattern (A) of the MOTOR AND
GOVERNOR MATCHING ADJ. resistor group.
2) Set the tape speed (using speed adjustment SFR101).
3) Restrictthe motorrotation by hand(or turnPAUSE ON).
4) Remove your hand and listen to the beginning of the
tape-run.
5) When the rise of tape running is smooth, no more
adjustment is necessary.
If wow continues for 1 to 2 seconds at the rise time,
changethe combined resistance accordingto procedure
6 and check that the tape starts running smooth.
6) Solder the resistor pattern according to the table below
(NOTE : =1.2ohm , =1.5ohm , =8.2ohm)
7) Finally re-check the tape speed.
Caution : Cool the patterns down to normal tempera-
ture after soldering. If the pattern remains
heated, the gorvernor circuit does not operate
normally.
Solder
Solder
Solder
OpenSolder
Solder
Pattern
(Procedure
1 above)
Step (1)
Step (2)
Medium
resistance
(B)
Low
resistance
(A)
High
resistance
(C)
Solder
Open Solder
A
B
C

DESCRIPTIONREF.NO. KANRI
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PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO. DESCRIPTIONREF. NO. KANRI
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PARTNO. KANRI
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REF.NO. DESCRIPTIONPARTNO.
MECHANICAL EXPLODED VIEW 1/1
11
8ZM-3 P2N
BA
CD
C
D
E
1
2
3
4
P.C.B
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
MECHANICAL PARTS LIST 1/1
12
1 8Z-HRB-001-010 LID,CASS R GRY<EXCEPT YZ>
1 8Z-HRB-018-010 LID,CASS R GRY EG<YZ>
2 8Z-HRB-217-010 SPR-T,CASS
3 8Z-HRB-002-010 WINDOW,CASS
4 8Z-HRG-201-010 HLDR,ANT
5 8Z-HRG-203-010 BAT-CONTACT,M
6 8Z-HRG-204-010 HLDR,POINTER
7 8Z-HRG-009-010 POINTER,TUN
8 8Z-HRG-205-010 GEAR,TUN
9 8Z-HRB-208-010 BAT-CONTACT,P
10 8Z-HRG-008-010 KNOB,RTRY VOL SIL
11 8Z-HRG-007-010 KNOB,RTRY TUN SIL
12 8Z-HRG-003-010 LID,BAT SIL
13 8Z-HRG-202-010 RACK,MSP
14 8Z-HRG-010-010 LENS,LED
15 85-HG8-203-010 SPR,CLICK
16 8Z-HRG-014-010 CABI,REAR SIL Y<EXCEPT YU>
16 8Z-HRG-001-010 CABI,REAR SIL YU<YU>
17 8Z-HRG-006-010 KNOB,RTRY MSP SIL
18 8Z-HRG-002-010 PANEL,MSP SIL
19 8Z-HRG-004-010 KNOB,SL TR SIL
A 87-067-732-010 TAPPING SCREW, VT1.4-3
B 87-262-505-310 SCREW, V+1.4-2.5
C 87-B10-196-010 VT2+1.4-4 BLK (3) HL
D 87-264-527-310 V 1.7-3 SCREW
E 87-B10-048-010 VT2+1.4-3 (3) CR HL
Basic color Color Basic color Color Basic color Color
symbol symbol symbol
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
COLORNAME TABLE

DESCRIPTIONREF.NO. KANRI
NO.
PARTNO. KANRI
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REF.NO. DESCRIPTIONPARTNO. DESCRIPTIONREF. NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO.
TAPE MECHANIISM EXPLODED VIEW 1/1
13
TAPE MECHANISM PARTS LIST 1/1
14
14
1
57
56
55
54
53
52
51
49
46
47
48
44
18
22
24
25
23
21
19 20 29
13 15
16
11
10
A
A8
53
4
2
7
7
6
9
12
28
27
34 35 41
36
33
31
30
32 W-P1.16-2.8-0.4
37
38
40 42
39
29
26
17
43
39
45
50
1 8Z-HRB-003-010 FRAME,CENTER GRY
2 8Z-HRB-207-110 SPR-P,CASS
3 88-ZM3-253-110 SPR-C,BT L
4 88-ZM3-274-010 GEAR,REEL A
5 8Z-HRB-014-010 KNOB,SL OPEN
6 8Z-HRB-204-110 LEVER,EJECT
7 8Z-HRB-216-110 CAP, EJECT
8 8Z-HRB-205-010 SPR-T,EJECT
9 8Z-HRB-215-010 SHAFT,ASSY
10 87-A91-379-010 MOT,BCY3B-13
11 88-ZM3-236-010 PULLEY,MOT S
12 88-ZM3-263-210 BELT,S
13 88-ZM3-243-010 SPR-T,PLAY BACK
14 8Z-HRB-206-010 PLATE,EJECT
15 88-ZM3-217-110 ARM,PINCH L
16 88-ZM3-241-010 SPR-T,PINCH L
17 88-ZM3-003-110 LEVER,REW
18 88-ZM3-246-110 SPR-T,FF REW
19 87-A80-115-010 F-CABLE,5P P2
20 87-A91-019-010 HEAD ASSY,PH 8ZM-3
21 88-ZM3-211-010 LEVER,DIR
22 88-ZM3-001-110 LEVER,PLAY
23 88-ZM3-213-110 LEVER,T-UP
24 88-ZM3-225-110 GEAR,PLAY
25 88-ZM3-224-110 GEAR,TRANSMIT
26 88-ZM3-002-010 LEVER,FF
27 88-ZM3-242-110 SPR-T,PINCH R
28 88-ZM3-218-010 ARM,PINCH R
29 88-ZM3-271-010 ROLLER ASSY,PINCH
30 88-ZM3-220-010 BTN,MODE SEL
31 88-ZM3-267-010 SHAFT,PULLEY TWIN
32 88-ZM3-234-010 PULLEY,BELT TWIN
33 88-ZM3-212-010 LEVER,LOCK
34 88-ZM3-245-110 SPR-T,LOCK
35 88-ZM3-201-110 CHAS ASSY,OUTSERT P
36 88-ZM3-216-010 LEVER,SW
37 88-ZM3-221-110 GEAR,AUTO
38 88-ZM3-240-010 FLY-WHL,R S
39 88-ZM3-266-010 CAPSTAN, 1.5-NS
40 88-ZM3-248-010 SPR-T,AUTO CHOOSE
41 88-ZM3-215-010 LEVER,AUTO KICK
42 88-ZM3-262-010 BELT,L
43 88-ZM3-244-010 SPR-T,DIR
44 88-ZM3-219-010 BTN,DIR KNOB
45 88-ZM3-239-010 FLY-WHL,L S
46 88-ZM3-226-010 GEAR,IDLE
47 88-ZM3-004-110 LEVER,STOP
48 88-ZM3-255-110 SPR-C,STOP
49 88-ZM3-214-010 LEVER,AUTO FIND
50 88-ZM3-238-010 CAP,SLIP
51 88-ZM3-252-010 SPR-C,SHIFT
52 88-ZM3-251-210 SPR-C,SLIP
53 88-ZM3-222-010 GEAR,SLIP FAST
54 88-ZM3-269-010 FELT,SLIP
55 88-ZM3-237-010 CLR,SLIP
56 88-ZM3-247-010 SPR-T,AUTO FIND
57 88-ZM3-223-010 GEAR,SLIP SLOW
A 87-067-384-010 SCREWVT1.4-3.5HL

DESCRIPTIONREF.NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO.
13
ACCESSORIES / PACKAGE LIST
1 8Z-HRG-903-010 IB,YU(3L) S<YU>
1 8Z-HRG-904-010 IB,YHJ(ECC) S<YH,YJ>
1 8Z-HRG-907-010 IB,YZ(EGF) S<YZ>
1 8Z-HRG-908-010 IB,YZ(SID) S<YZ>
1 8Z-HRG-909-010 IB,YZ(PHNCZ) S<YZ>
2 8Z-HRB-050-010 CLIP,BELT ASSY
3 87-B30-080-110 HEADPHONE,HP-M009(F)<YU>
3 87-B30-254-010 HEADPHONE,HP-M007B(T)<YH,YJ,YZ>
4 87-080-027-010 SCREW CUP-BELT

211, IKENOHATA 1CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:[phone]
L
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2-11,IKENOHATA1-CHOME,TAITO-KU,TOKYO110,JAPAN TEL:[phone]
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