HS-TX491
YU
SERVICE MANUAL
BASIC TAPE MECHANISM : 8ZM-3 P4NF
S/M Code No. 09-99A-407-8R2
RE
VI
SIO
N
STEREO RADIO
CASSETTE PLAYER
SPECIFICATIONS
Frequency range:
AM: 530/531 – 1,710/1,602 kHz (10/9 kHz step)
531 – 1,629 kHz (9 kHz step)
FM1, FM2: 87.5/87.5 – 108.1/108 MHz (200/50 kHz step)
76 – 108 MHz (100 kHz step in 76 – 90 MHz,
50 kHz step in 90 –108 MHz)
Maximum output:
12 mW + 12 mW (EIAJ/32 ohms)
Power source:
Battery DC 3V, size AA (R6) x 2
Domestic AC power (using optional AC adaptor: AIWA AC-D302)
Battery life (EIAJ,1 mW output, playback):
Approx. 7 hours using size AA (R6P) manganese batteries
Approx. 24 hours using size AA (LR6) alkaline batteries
Maximum dimensions (W x H x D):
112.8 x 88 x 32.7 mm (41/2 x 31/2 x 15/16 inches)
Weight (excluding batteries):
Approx.140 g (4.9 oz)
• Design and specifications are subject to change without notice.
2
ACCESSORIES / PACKAGE LIST
If can’t understand for Description please kindly refer to “ REFERENCE NAME LIST ”.
REF.NO
1
2
3
PARTNO.
KANRI
NO.
8Z-HRB-923-010
87-B30-254-010
8Z-HRB-050-110
DESCRIPTION
IB,YU(3L)S 491
HEADPHONE,HP-M007B(T)
CLIP,BELT ASSY
3
ELECTRICAL MAIN PARTS LIST
REF.NO
PARTNO
KANRI
NO
DESCRIPTION
REF.NO
IC
87-002-423-080
87-017-370-080
87-A21-215-040
87-A21-272-010
87-A20-904-080
IC,TA2002 FN
IC,MM1038AFF
C-IC,TA2104AFN
C-IC,TC9318FB-046
C-IC,TK11823MTL
TRANSISTOR
87-026-414-080
87-026-418-080
87-026-417-080
89-113-625-080
87-026-429-080
C-TR RN1370
TR,RN1311 (0.1W)
TR,RN1310
TR,2SA1362GR(120MHZ,0)
TR,RN2311
89-327-143-080
89-341-165-080
87-026-411-080
87-026-264-080
C-TR,2SC2714O
CHIP TRANSISTOR 2SC4116GR
C-TR RN1304
C-TR RN1411
87-A40-642-040
87-A40-630-040
87-A40-485-070
87-A40-360-080
87-A40-462-040
C-DIODE,1SS367
C-DIODE,RB411D
C-VARI-CAP,SVC208
C-DIODE, MA786
C-VARI-CAP,SVC347(S)
PARTNO.
KANRI
NO.
DESCRIPTION
C210
C212
C216
C217
C222
87-012-156-080
87-012-286-080
87-012-162-080
87-A10-047-080
87-010-831-080
CAP,S 220P-50 CH
CAP, U 0.01-25
C-CAP,U 1P-50 CK
C-CAP,U 1-10 Z F
C-CAP,U,0.1-16F
C224
C226
C229
C230
C231
87-012-274-080
87-A10-047-080
87-010-831-080
87-010-831-080
87-010-959-080
CAP,U 1000P-50B
C-CAP,U 1-10 Z F
C-CAP,U,0.1-16F
C-CAP,U,0.1-16F
CAP,U 0.056-16F
C232
C233
C234
C235
C236
87-010-959-080
87-012-287-080
87-012-287-080
87-A10-047-080
87-A10-420-080
CHIP CAP,U 0.056-16F
CAP,U 0.015-25 F
CAP,U 0.015-25 F
C-CAP,U 1-10 Z F
C-CAP,TN 4.7-4
C237
C239
C240
C241
C242
87-A10-047-080
87-A10-707-080
87-012-193-080
87-012-176-080
87-010-574-080
C-CAP,U 1-10 Z F
CAP,U 0.47-10F Z
CAP,82P
CAP 15P
CAP,S 470P-50 UJ
C243
C244
C245
C248
C250
87-012-172-080
87-010-831-080
87-012-272-080
87-012-195-080
87-010-853-080
CAP,U 10P-50D CH
C-CAP,U,0.1-16F
CAP,U 680P-50 GRM
CAP,U 100P-50CH
CAP,220-4V H5.5
C251
C253
C290
C301
C302
87-012-195-080
87-012-286-080
87-010-787-080
87-012-277-080
87-012-277-080
CAP,U 100P-50CH
C-CAP,U 0.01-25 K B
CAP, U 0.022-25
CAP,U 1800P-50
C-CAP, U 1800P-50 B
C303
C304
C308
C309
C310
87-012-277-080
87-012-277-080
87-A10-047-080
87-A10-047-080
87-A10-047-080
C-CAP, U 1800P-50 B
C-CAP, U 1800P-50 B
C-CAP,U 1-10 Z F
C-CAP,U 1-10 Z F
C-CAP,U 1-10 Z F
C311
C312
C313
C314
C315
87-012-174-080
87-012-176-080
87-A10-047-080
87-010-831-080
87-010-831-080
CAP CHIP CERA SS 12P CHJ
CAP 15P
C-CAP,U 1-10 Z F
C-CAP,U 0.1-16 Z F
C-CAP,U 0.1-16 Z F
C317
C318
C319
C320
C321
87-A10-047-080
87-016-462-080
87-010-787-080
87-010-505-080
87-012-286-080
C-CAP,U 1-10 Z F
C-CAP,S 1-16 F
CAP, U 0.022-25
CA, CHIP TANTALUM 1-16
CAP, U 0.01-25
C322
C323
C324
C325
C326
87-012-337-080
87-012-167-080
87-012-170-080
87-012-188-080
87-A10-047-080
C-CAP,U 56P-50 CH
C-CAP,U 5P-50 CH
C-CAP,U 8P-50 CH
CAP,U 47P-50 CH
C-CAP,U 1-10 Z F
C901
C902
C904
C999
CF202
87-012-274-080
87-010-831-080
87-012-274-080
87-012-270-080
87-A91-343-010
CHIP CAP,U 1000P-50B
C-CAP,U,0.1-16F
CAP,U 1000P
CAP, U 470P-50
FLTR,SK107M2N
CF203
CF204
CT201
IFT201
J001
87-A90-710-010
87-A91-313-080
87-A91-183-080
87-005-788-080
87-A60-438-010
AM IF PFS450A3
FLTR,CDACV10.7
TRIMMER,CER10P
IFT,AM 5M 5CLD
JACK,SW (1537)
J101
L001
L002
L003
L101
87-A60-849-010
87-003-231-080
87-003-231-080
87-003-231-080
87-A50-367-080
JACK,DC DIA 2.75 BLK
C-COIL 1UH
C-COIL 1UH
C-COIL 1UH
C-COIL, 10UH LQG21F
L202
L204
L206
L207
8Z-HRB-610-010
8Z-HRB-609-010
87-HRA-603-010
87-003-226-080
COIL,FM RF
COIL,FM OSC
BAR-ANT,MW
INDUCTOR 100UJ
DIODE
MAIN C.B
BPF201
C001
C002
C003
C004
87-A90-601-010
87-012-274-080
87-012-274-080
87-A10-952-080
87-A10-952-080
FLTR,BPF GFWB7
C-CAP,U 1000P
C-CAP,U 1000P
C-CAP,TN 22-4 M A MCM
C-CAP,TN 22-4 M A MCM
C005
C006
C007
C008
C009
87-012-276-080
87-012-276-080
87-A10-504-080
87-A10-504-080
87-A10-047-080
CAP, CHIP SS 1500 PBK
CAP, CHIP SS 1500 PBK
C-CAP,U 0.047-16 K B
C-CAP,U 0.047-16 K B
C-CAP,U 1-10 Z F
C010
C011
C012
C013
C014
87-A10-047-080
87-A10-047-080
87-A10-047-080
87-012-336-080
87-012-336-080
C-CAP,U 1-10
C-CAP,U 1-10
C-CAP,U 1-10
CAP, CHIP SS
CAP, CHIP SS
C015
C016
C017
C018
C019
87-010-831-080
87-010-831-080
87-010-831-080
87-010-831-080
87-010-674-080
C-CAP,U,0.1-16F
C-CAP,U,0.1-16F
C-CAP,U 0.1-16 Z F
C-CAP,U 0.1-16 Z F
CAP, ELECT 220-2
C020
C090
C092
C093
C094
87-010-674-080
87-A10-047-080
87-010-831-080
87-A11-244-080
87-A10-952-080
CAP, ELECT 220-2
C-CAP,U 1-10 Z F
C-CAP,U,0.1-16F
C-CAP, TN 47-4 A MCM
C-CAP,TN 22-4 M A MCM
C095
C096
C098
C099
C101
87-010-853-080
87-A10-047-080
87-A10-047-080
87-A10-422-080
87-A10-047-080
C-CAP,220-4V H5.5
C-CAP,U 1-10 Z F
C-CAP,U 1-10 Z F
C-CAP,TN 10-4 A TCF
CAP,U 1-10 ZF
C102
C103
C104
C110
C201
87-012-274-080
87-A10-047-080
87-010-831-080
87-010-503-010
87-012-286-080
C-CAP,U 1000P-50 K B
C-CAP,U 1-10 Z F
C-CAP,U,0.1-16F
C-CAP,220-4V H5.5
CAP, U 0.01-25
C202
C203
C205
C206
C207
87-012-273-080
87-012-172-080
87-012-272-080
87-012-168-080
87-012-286-080
C-CAP,U 820P-50B
C-CHIP U 10P CH
CAP,U 680P-50 B
C-CAP,U 6P-50 CH
CAP, U 0.01-25
Z F
Z F
Z F
330P SL
330P SL
4
ELECTRICAL MAIN PARTS LIST
REF.NO
PARTNO.
KANRI
NO.
DESCRIPTION
L301
LCD301
R111
S001
S002
87-A50-230-080
8Z-HR9-603-110
87-022-656-080
8Z-HRB-607-010
87-A90-050-010
COIL,D-D
LCD,HS ASSY(BAND/TU)
C-RES,K43G 0.68
SW,SL 2-2-2 SSZZ-S-502(S)
SW, SL 2-2-2 NS (BLK)
S101
S301
S302
S303
SFR101
87-A91-077-010
87-A91-320-080
87-A90-665-280
87-A90-665-280
87-024-050-010
SW,LEAF
SW,SL 1-1-2 SSSS8A2-B-2B(NC)
C-SW,TACT LS7A2M
C-SW,TACT LS7A2M
SEMI-FIXED RESISTOR, 1K
TH101
TH301
VR001
X301
87-A91-322-080
87-A90-547-080
87-A90-818-010
87-A70-187-010
C-THMS,157-101-53028-TP
C-THMS,47K (5%)NTH 5G
VR,RTRY 20KCX2
VIB,XTAL 75KHZ CFV206
CHIP RESISTOR PART CODE
Chip Resistor Part Coding
8 8
A
Figure
Resistor Code
Value of resistor
Chip resistor
Dimensions (mm)
Wattage
1/16W
Type
1005
Tolerance
5%
Symbol
CJ
1/16W
1/10W
1608
2125
5%
5%
CJ
CJ
1/8W
3216
5%
CJ
L
C
B
E
5
t
W
TRANSISTOR ILLUSTRATION
2SA1362GR
2SC2714O
2SC4116GR
RN1304
RN1310
Form
RN1311
RN1370
RN1411
RN2311
6
:A
Resistor Code : A
L
W
t
1.0
0.5
0.35
104
1.6
0.8
0.45
108
2
1.25
0.45
118
3.2
1.6
0.55
128
WIRING (MAIN)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
A A
B B
C C
D D
E E
F F
G G
H H
I I
J J
K K
L L
M M
N N
O O
P P
Q Q
R R
S S
T
T
U U
7
8
10
11
12
13
14
SCHEMATIC DIAGRAM (MAIN)
9
10
IC BLOCK DIAGRAM
LCD DIAGRAM
IC, MM1038AFF
IC, TK11823MTL
11
12
IC DESCRIPTION
IC, TC9318FB-046
Pin No.
Pin Name
I/O
Description
1~3
COM1 ~ COM3
O
LCD common output.
4 ~ 22
S1 ~ S19
O
LCD segment output.
23 ~ 26
S20 ~ S23
-
Not used.
27 ~ 30
K0 ~ K3
I
Key matrix input.
31 ~ 34
T0 ~ T3
O
Key return timing output.
35
FM/AM
O
‘H’: FM,‘L’:AM
36
MSP
O
The output port is used for Super-Bass On/Off.
37
MSP
O
Not used.
38
TV OUT
O
Not used .
39,40
DES
I
These two ports combined with K0 ~ K3 determine the destination.
41
TAPE IN
I
‘H’: Tape ON, ‘L’: Tape OFF.
42
POWER CHECK
I
A/D in for power supply voltage level.
43
REMOTE
I
A/D in for remote controller.
44
POWER SW
O
‘H’: Power OFF, ‘L’: Power ON.
45
HOLD
I
‘H’: Hold ON, ‘L’: Hold OFF.
46
BUZZER
O
Buzzer output.
47
MUTE
O
Mute output.
48
TEST
-
Microcontroller test terminal (Not used).
49
WAKE UP
I
Wake up the system from memory back-up mode.
50
IF IN
I
IF frequency input.
51
TU OUT
O
‘L’: Tuner ON.
52
PLL OUT
O
Phase comparison output.
53
GND
-
GND.
54
FM IN
I
FM oscillator signal input.
55
AM IN
I
AM oscillator signal input.
56
VDD
-
Supply voltage terminal.
57
RESET
I
System reset input.
58
XOUT
O
59
XIN
I
60
VXT
-
Power supply for crystal oscillator.
61
VLCD
-
Reference voltage for LCD driver (Not used).
62, 63
C1,C2
-
Voltage doubler boosting.
64
VEE
-
Constant 1.5V for LCD driver.
Crystal oscillator pin.
13
ADJUSTMENT
A
MAIN C.B
3
3
2 4
L 206
*
CT 201
5
L 202
*
VR 001
4
TP1(VT)
L 204
1
C
B
J001
SFR101
A
6
*
HEADPHONES
6
7
NOTE:
: On the other components side
*
<RADIO SECTION>
1. AM IF Adjustment
IFT201..................................................................450kHz
4. FM VT Adjustment
Settings: •Test point
TP1(VT)
•Adjustment location .............................L204
2. AM VT Check
Method:` Set to FM 76MHz and adjust L204 so that
Settings: • Test point:
TP1 (VT)
the test point becomes 0.9V±0.1V. Then set
Method: Set to AM 530kHz and check that the test point
to FM 108.1MHz and check that the test
is1.0V-0.2/+0.3V. Then set to AM 1710kHz
point is less than 12.0V.
and check the test point is less than 10.0V.
5. FM Tracking Adjustment
3. AM Tracking Adjustment
L202................................................................. 87.5MHz
L206.....................................................................630kHz
CT201.................................................................1440kHz
14
<TAPE PLAYER SECTION>
6.Tape Speed Adjustment
Settings: • Test tape :
TTA–100
• Test point :
HEADPHONES (J001)
• Adjustment location : SFR101
• Supper BASS:
OFF
• Tape select:
NORM
• Direction:
FWD
• Volume:
MAX–10dB
Method: Play back the test tape and adjust for
3000Hz±60Hz (FWD) and confirm that
REV speed is 3000Hz±60Hz.
7. GOVERNOR 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 of the MOTOR AND
GOVERNOR MATCHING ADJ. resistor group.
2) Set the tape speed (using speed adjustment SFR101).
3) Restrict the motor rotation by hand(or turn PAUSE 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,
change the combined resistance according to procedure
6) and check that the tape starts running smooth.
6) Solder the resistor pattern according to the table below:
Pattern
High
resistance(C)
Medium
resistance(B)
Low
resistance(A)
(Procedure Step (1)
1 above)
Step (2)
Solder
Open
Solder
Solder
Open
Open
Open
Solder
Solder
7) Finally re-check the tape speed.
Caution : Cool the patterns down to normal temperature after soldering. If the pattern remains
heated,the gorvernor circuit does not
operate normally.
15
MECHANICAL EXPLODED VIEW 1/1
1
3
2
8ZM-3
P4NF
7
5
F
8
C
9
A
D
P.C.B
A
11
C
LCD301
10
B
B
12
E
13
16
14
17
15
4
18
19
20
6
16
MECHANICAL PARTS LIST 1/1
REF.NO
PARTNO
KANRI
NO
DESCRIPTION
1
2
3
4
5
8Z-HRB-047-010
8Z-HRB-048-010
8Z-HRB-217-110
8Z-HRB-056-010
8Z-HRB-202-110
LID,CASS TRP
WINDOW,CASS TPR
SPR-T,CASS
KEY,PRESET R TRP
HLDR,DC JACK
6
7
8
9
8Z-HRB-054-010
87-HRA-603-010
8Z-HRB-201-110
8Z-HRB-209-010
PANEL,REAR TRP
BAR-ANT,MW
HLDR,BAR-ANT
BAT-CONTACT,M
10
11
12
13
14
8Z-HRB-208-010
8Z-HRB-053-010
8Z-HRB-203-110
8Z-HRB-212-010
8Z-HRB-052-010
BAT-CONTACT,P
LID,BATT TRP
HLDR,KNOB RTRY
SPR-T,HOLD
CABI,REAR TRP
15
16
17
18
19
8Z-HRB-058-010
8Z-HRB-012-210
8Z-HRB-055-010
8Z-HRB-011-210
8Z-HRB-009-210
KNOB,RTRY TRP TRP
KEY,RBR TUN
KEY,BAND TRP
KEY,RBR PRESET R
KEY,RBR PRESET L
20
A
B
C
D
8Z-HRB-057-010
87-B10-196-010
87-067-384-010
87-264-527-310
87-067-732-010
KEY,PRESET L TRP
VT2+1.4-4 BLK (3) HL
SCREWVT1.4-3.5HL
V 1.7-3 SCREW
TAPPING SCREW, VT1.4-3
E
F
87-B10-048-010
8Z-HRB-223-010
VT2+1.4-3 (3) CR HL
W,2-9-0.5 W/ADH
REF.NO
PARTNO.
KANRI
NO.
DESCRIPTION
COLOR NAME TABLE
Basic color
symbol
B
G
LT
R
T
WT
LM
LD
Color
Black
Green
Transparent Blue
Red
Brown
Transparent White
Metallic Blue
Dark Blue
Basic color
symbol
C
H
N
S
V
Y
LL
DT
Color
Cream
Gray
Gold
Silver
Violet
Yellow
Light Blue
Transparent Orange
17
Basic color
symbol
D
L
P
ST
W
YT
GT
Color
Orange
Blue
Pink
Titan Silver
White
Transparent Yellow
Transparent Green
TAPE MECHANIISM EXPLODED VIEW 1/1
38
32
W-P,1.16-2.8-0.4
37
33
31
30
39
36
40
42
27
26
34
41
45
43
28
29
25
39
35
24
22
44
18
21
48
19
50
17
23
47
16
20
51
49
52
29
53
13
12
15
46
54
11
55
10
56
57
A
9
14
A
7
7
8
6
1
5
3
4
18
2
TAPE MECHANISM PARTS LIST 1/1
REF.NO
PARTNO
KANRI
NO
DESCRIPTION
1
2
3
4
5
8Z-HRB-049-010
8Z-HRB-207-110
88-ZM3-253-110
88-ZM3-274-010
8Z-HRB-014-110
FRAME,CENTER TRP
SPR-P,CASS
SPR-C,BT L
GEAR,REEL A
KNOB,SL OPEN
6
7
8
9
10
8Z-HRB-204-110
8Z-HRB-216-110
8Z-HRB-205-110
8Z-HRB-215-010
87-A91-379-010
LEVER,EJECT
CAP, EJECT
SPR-T,EJECT
SHAFT,ASSY
MOT,BCY3B-13
11
12
13
14
15
88-ZM3-236-010
88-ZM3-263-210
88-ZM3-243-010
8Z-HRB-206-010
88-ZM3-217-110
PULLEY,MOT S
BELT,S
SPR-T,PLAY BACK
PLATE,EJECT
ARM,PINCH L
16
17
18
19
20
88-ZM3-241-110
88-ZM3-003-110
88-ZM3-246-110
87-A80-115-010
87-A91-019-010
SPR-T,PINCH L
LEVER,REW
SPR-T,FF REW
F-CABLE,5P P2
HEAD ASSY,PH 8ZM-3
21
22
23
24
25
88-ZM3-211-010
88-ZM3-001-110
88-ZM3-213-310
88-ZM3-225-110
88-ZM3-224-110
LEVER,DIR
LEVER,PLAY
LEVER,T-UP
GEAR,PLAY
GEAR,TRANSMIT
26
27
28
29
30
88-ZM3-002-110
88-ZM3-242-210
88-ZM3-218-010
88-ZM3-271-010
88-ZM3-220-010
LEVER,FF
SPR-T,PINCH R
ARM,PINCH R
ROLLER ASSY,PINCH
BTN,MODE SEL
REF.NO
19
PARTNO.
KANRI
NO.
DESCRIPTION
31
32
33
34
35
36
37
38
39
40
88-ZM3-267-010
88-ZM3-234-010
88-ZM3-212-010
88-ZM3-245-110
88-ZM3-201-210
88-ZM3-216-010
88-ZM3-221-110
88-ZM3-240-010
88-ZM3-266-010
88-ZM3-248-010
SHAFT,PULLEY TWIN
PULLEY,BELT TWIN
LEVER,LOCK
SPR-T,LOCK
CHAS ASSY,OUTSERT P
LEVER,SW
GEAR,AUTO
FLY-WHL,R S
CAPSTAN, 1.5-NS
SPR-T,AUTO CHOOSE
41
42
43
44
45
88-ZM3-215-110
88-ZM3-262-010
88-ZM3-244-010
88-ZM3-219-010
88-ZM3-239-010
LEVER,AUTO KICK
BELT,L
SPR-T,DIR
BTN,DIR KNOB
FLY-WHL,L S
46
47
48
49
50
88-ZM3-226-010
88-ZM3-004-110
88-ZM3-255-110
88-ZM3-214-010
88-ZM3-238-010
GEAR,IDLE
LEVER,STOP
SPR-C,STOP
LEVER,AUTO FIND
CAP,SLIP
51
52
53
54
55
88-ZM3-252-010
88-ZM3-251-310
88-ZM3-222-110
88-ZM3-269-110
88-ZM3-237-110
SPR-C,SHIFT
SPR-C,SLIP
GEAR,SLIP FAST
FELT,SLIP
CLR,SLIP
56
57
A
88-ZM3-247-010
88-ZM3-223-010
87-067-384-010
SPR-T,AUTO FIND
GEAR,SLIP SLOW
SCREWVT1.4-3.5HL
L
A4
2-11,
TOKYO110,
110,JAPAN
JAPANTEL:03
TEL:03
(3827)
3111
2–11,IKENOHATA
IKENOHATA1-CHOME,
1–CHOME,TAITO-KU,
TAITO-KU, TOKYO
(3827)
3111
9820572 931261
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