Aiwa HS-PX307 User manual

SERVICE MANUAL
DATA
STEREO
CASSETTE PLAYER BASIC TAPE MECHANISM : CL-850-5 SIL
HS-PX307 YH
S/M Code No. 09-005-425-6R2
REVISION
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-003-425-6T2).

SPECIFICATIONS
- 2 -
ACCESSORIES / PACKAGE LIST
1 8A-HKF-902-010 IB,YJ(ECC) F 307
2 87-B30-336-010 HEADPHONE,HP-M041(S)
3 8A-HKF-951-010 RC UNIT,RC307
• Design and specifications are subject to change without
notice.
Maximum output: 5 mW + 5 mW (EIAJ 32 ohms)
Power source: DC 3V using two R6 (AA) dry cell batteries,
AC house current using the optional AC adaptor
AC-D302
Battery life (EIAJ 1 mW output): Aprox. 24 hours using two LR6 (AA) alkaline batteries
Maximum outside dimensions: 112.9 (W) x 84 (H) x 29.3 (D) mm
(4 1/2 x 3 3/8 x 1 3/16in.) (excluding projecting parts and controls.)
Weight: Approx.124 g (4.3 oz) excluding batteries
• Dolby noise reduction manufactured under license from Dolby
LaboratoriesLicensingCorporation.
“DOLBY” and the double-D symbol are trademarks of Dolby
LaboratoriesLicensingCorporation.
DISASSEMBLY INSTRUCTION
54
6
7
8
2
1
3
Screw
Screw
Battery Lid
1) Remove the 2 screws.
2) Open the battery lid.
3) Release the hooks in the order of 1- 8.
* Releasing hook 3: After releasing hooks 1and 2, push
the center frame (with the marks) to release hook 3.
DESCRIPTIONREF.NO. KANRI
NO.
PARTNO.

DESCRIPTIONREF.NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO.
ELECTRICAL MAIN PARTS LIST
- 3 -
IC
87-002-677-080 C-IC,TA2002F
87-017-805-080 C-IC,AN7375NS(OP AMP)
87-A20-532-140 C-IC,LB1977M-TLM
87-A21-567-040 C-IC,TMP47C443LDM-1B45(EL)
87-A21-566-040 C-IC,S-80820ANNP
87-A21-565-040 C-IC,S-80817ANNP
TRANSISTOR
89-111-625-080 C-TR,2SA1162GR
89-327-125-080 C-TR,2SC2712GR
89-113-625-080 C-TR,2SA1362GR
87-026-581-080 C-TR,RN2405
87-026-267-080 C-TR,RN2407
87-A30-085-040 C-TR,CSA1362GR
DIODE
87-A40-822-040 C-DIODE,CRS01
MAIN C.B
C101 87-012-275-080 C-CAP,U 1200P-50 B
C102 87-012-275-080 C-CAP,U 1200P-50 B
C103 87-012-275-080 C-CAP,U 1200P-50 B
C104 87-012-275-080 C-CAP,U 1200P-50 B
C105 87-016-114-080 C-CAP,U 0.01-25 B
C106 87-016-114-080 C-CAP,U 0.01-25 B
C107 87-010-501-010 CAP,E 47-4V
C108 87-010-501-010 CAP,E 47-4V
C111 87-015-688-010 CAP,E 4.7-35 M 7L SRA
C112 87-012-142-080 C-CAP, S 0.33-16
C113 87-010-805-080 C-CAP, S 1-16
C114 87-012-141-080 C-CAP,0.22-16 Z F
C117 87-012-278-080 C-CAP,U 2200P-50 B
C118 87-012-278-080 C-CAP,U 2200P-50 B
C119 87-A10-263-080 C-CAP,U 0.1-16 Z F
C120 87-A10-263-080 C-CAP,U 0.1-16 Z F
C121 87-010-502-010 CAP,E 100-4
C122 87-010-503-010 CAP,E 220-4 GAS
C123 87-010-502-010 CAP,E 100-4 M K S
C124 87-010-502-010 CAP,E 100-4 M K S
C125 87-010-501-010 CAP,E 47-4V
C201 87-016-461-080 C-CAP,S 0.47-16 Z F
C202 87-016-461-080 C-CAP,S 0.47-16 Z F
C203 87-A10-263-080 C-CAP,U 0.1-16 Z F
C204 87-A10-263-080 C-CAP,U 0.1-16 Z F
C205 87-012-282-080 C-CAP, U 4700P-50
C206 87-012-282-080 C-CAP, U 4700P-50
C207 87-016-369-080 C-CAP,S 0.033-25 B K
C208 87-016-369-080 C-CAP,S 0.033-25 B K
C209 87-012-282-080 C-CAP, U 4700P-50
C210 87-012-282-080 C-CAP, U 4700P-50
C211 87-010-805-080 CAP, S 1-16
C212 87-010-805-080 CAP, S 1-16
C213 87-010-805-080 CAP, S 1-16
C214 87-010-805-080 CAP, S 1-16
C215 87-A10-263-080 C-CAP,U 0.1-16 Z F
C216 87-A10-488-010 CAP,E 47-4 7L SR
C303 87-010-196-080 C-CAP,0.1-25
C304 87-010-196-080 C-CAP-,0.1-25
C401 87-A10-201-080 C-CAP,S 0.33-16 K B
C403 87-010-805-080 C-CAP,S 1-16 Z F
C404 87-016-526-080 C-CAP,S 0.47-16 K B
C405 87-010-992-080 C-CAP,S 0.047-25 B
C406 87-A10-263-080 C-CAP,U 0.1-16 Z F
C407 87-010-992-080 C-CAP,U 0.047-25 K B MK21
C408 87-010-992-080 C-CAP,U 0.047-25 K B MK212
C409 87-010-992-080 C-CAP,U 0.047-25 K B MK212
C410 87-A10-263-080 C-CAP,U 0.1-16 Z F
C701 87-A10-263-080 C-CAP,U 0.1-16 Z F
C702 87-012-141-080 C-CAP,U 0.22-16 Z F
C703 87-012-141-080 C-CAP,U 0.22-16 Z F
C705 87-A10-263-080 C-CAP,U 0.1-16 Z F
C707 87-010-196-080 C-CAP,0.1-25
C708 87-A10-263-080 CAP, U 0.1-16 Z F
C709 87-A10-263-080 CAP, U 0.1-16 Z F
C801 87-A10-489-010 CAP,E 220-4 7L SR
D601 87-A91-355-040 C-LED,BR1112H-TR-RED
J101 87-A60-437-010 JACK,3.5 BLK ST W/O SW4P
J801 87-A61-124-010 JACK,DC DIA2.75 BLK TC
PS501 87-A90-440-010 SNSR,PHOTO GP2S24N2-B
R103 87-022-279-080 C-RES,U 470-1/16W F
R104 87-022-279-080 C-RES,U 470-1/16W F
R105 87-022-217-080 C-RES,U 1.2K-1/16W F
R106 87-022-217-080 C-RES,U 1.2K-1/16W F
R107 87-022-221-080 C-RES,U 1.8K-1/16W F
R108 87-022-221-080 C-RES,U 1.8K-1/16W F
R109 87-022-292-080 C-RES, U 330K-1/16W F
R110 87-022-292-080 C-RES, U 330K-1/16W F
R111 87-022-243-080 C-RES,U 15K-1/16W F
R112 87-022-243-080 C-RES,U 15K-1/16W F
R133 87-022-247-080 C-RES,U 22K-1/16W F
R134 87-022-247-080 C-RES,U 22K-1/16W F
R137 87-022-225-080 C-RES,U 2.7K-1/16W F
R138 87-022-225-080 C-RES,U 2.7K-1/16W F
R713 87-022-245-080 C-RES,U 18K-1/16W F
R714 87-022-245-080 C-RES U 18K-1/16WF
S101 87-A90-050-010 SW, SL 2-2-2 NS (BLK)
S201 87-036-379-180 C-SW,SL1-1-2 SS-350-A12B-C-T
S301 87-A90-050-010 SW, SL 2-2-2 NS (BLK)
S701 87-A90-665-280 C-SW,TACT LS7A2M
S702 87-A90-665-280 C-SW,TACT LS7A2M
S703 87-A90-665-280 C-SW,TACT LS7A2M
S704 87-A90-665-280 C-SW,TACT LS7A2M
S705 87-036-379-180 C-SW,SL1-1-2 SS350
S706 87-A91-365-080 C-SW,PUSH 1-1-1 SPVG21
SFR401 87-A91-653-040 C-SFR,K 33K H RH03AEC
TH401 87-A91-675-080 C-THMS,NTH5G16P39B472K 07TH
VR101 87-A91-650-010 VR,RTRY 50KCX2 H XV0102G
X701 87-A70-241-010 VIB,CER 4.000MHZ CSTS0400MG03

TRANSISTOR ILLUSTRATION
B
E
C
- 4 -
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
2SA1362
2SA1162
2SC2712
CSA1362
RN2405
RN2407

WIRING
- 5 -
876543211345678
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
2
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
9 10 11 12 13 14 15 16910111213141516

SCHEMATIC DIAGRAM
- 6 -

- 7 -
IC BLOCK DIAGRAM

- 8 -
IC DESCRIPTION
IC, TMP47C443LDM-1B45(EL)
1 XOUT O Connected to 4MHz crystal oscillator.
2XINI
3 RESET I Input reset signal.
4 EJECT SW I Input EJECT SW."H": OFF, "L": ON.
5 BUZR O Output buzzer sound.
6 TEST I Input test mode. "H": Test ON. (Connected to GND).
7 HOLD I Input HOLD SW. "H": OFF, "L": ON.
8 NC – Connected to GND.
9 L.V.STOP I Input reducing voltage detection. "L": Mecha STOP.
10 MAIN IN I Input key from main unit (A/D).
11 REMOTE IN I Input key from remote controller (A/D).
12 ~ 13 NC O Not connected.
14 POWER ON O Output power for audio circuit. "L": ON.
15 GND – Connected to GND.
16 PHOTO OUT O Microcomputer detection P-SNSR level output pin.
17 LOAD CTL O Output for voltage supply checking. "L": Check.
18 MOT ON O Output motor activation. "L": ON.
19 MOT DIR O Output motor rotating direction. "L": Counterclockwise.
20 BRAKE O Output motor brake. "L": ON.
21 MOT HI O Output motor hi-speed activation. "L": ON.
22 MOT CH I Inputmotoractivationdetection.
23 NC – Connected to GND.
24 P-SNSR I Input sensor waveform.
25 C-SW I Input cassette tape detection. "H": Not exist, "L": Exist. (Connected to GND).
26 AUTO SW I Input AUTO SW. "H": AUTO operation, "L": NO AUTO operation.
27 F/R CTRL O Output FWD, REV control. "L": REV.
28 MUTE O Output muting. "L":ON.
29 WAKE UP I Input micro-computer OSC ON.
30 VDD – Power supply (+3V).
Pin No. Pin Name I/O Description

- 9 -
ADJUSTMENT
1. Tape Speed Adjustment
Settings : • Test tape : TTA – 100 (Tape center)
• Test point : Phones Jack (J101)
• Adjustment location : SFR401
• Dolby SW : OFF
• Super Bass : OFF
• Direction : FWD
• Tape selector : NORM
• Volume : MAX
Method : Play back the test tape and adjust SFR401 so that
the frequency becomes 3015 Hz ± 10 Hz. Then
confirm WOW is less than 0.55%.
2. Dolby Level Adjustment
Setting: • Test tape : TTA – 200
• Test point : TP1(LCH), TP2(RCH),
TP3(GND)
• Direction : FWD, REV
• Tape selector : NORM
• Dolby NR : OFF
• Volume : MIN
• Solder points : Dolby adjust point
1 , 2 , 3 , 4 , 5 , 6
Method : Connect 10µF/16V coupling capacitors between solder
points and test equipment (connect the positive
terminals to the solder points). Short the Dolby adjust
point via solder as shown in the table so that the Dolby
level becomes 100 mV ± 1.0 dB in both the forward and
reverse directions.
MAIN C.B
A
VR101
VOLUME
1
SFR401
TP3 (RCH) TP2 (LCH)
TP1 (GND)
2
RCH
5
46
LCH
2
1
2
3
J101
PHONES
1
Solder point Increase level
1 , 4 2 , 5 3 , 6
Solder Open Open 1.4 dB
Open Solder Open 2.0 dB
Open Open Solder 2.9 dB
Solder Solder Open 3.1 dB
Solder Open Solder 3.9 dB
Open Solder Solder 4.4 dB
Solder Solder Solder 5.2 dB
Dolby Level Adjust List (For RCH and LCH)

- 10 -
TEST MODE
This model has a test mode function in the disassembled condition.
1. How to use the test mode:
• Short the test land in the MAIN C.B.
• Auto-stop function is not detected by micro-computer while test mode is active.
Note: Make sure that the test land is opened after the test mode is de-activated.
(Auto-stop function is not available with shorted land condition.)
2. How to disassemble the circuit board.
• Removes the soldering part in the MAIN C.B (with the mark).
• Removes two screws.
Screw
Screw
TP701 TEST

- 11 -
MECHANICAL EXPLODED VIEW 1 / 1
5
21 20
A
19
A
AA16
14
15
12
BAR,ANT
A
13
10
11
98
18
A
B7
6
FRAME,CENTER SIL
2
3
4
17
P. C . B
1

DESCRIPTIONREF.NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO.
MECHANICAL PARTS LIST 1 / 1
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
- 12 -
1 8A-HKF-001-010 LID,CASS P SIL
2 8A-HR8-213-010 SPR-T,CASS
3 8A-HR8-002-010 WINDOW,CASS
4 8A-HR8-004-010 PLATE,HEAD SIL
5 8A-HKF-004-010 LENS,LED P
6 8A-HR8-603-010 RBN-CORD,4P MOTOR
7 8A-HR8-216-010 HLDR,DC
8 8A-HR8-210-010 SPR-T,LOCK
9 8A-HR8-208-010 PLATE,LOCK
10 8A-HR8-211-010 SPR-T,RTRY
11 8A-HR8-005-010 KNOB,SL OPEN
12 8A-HR8-201-010 LEVER,ASSY REV
13 8A-HR8-212-010 SPR-E,EJECT
14 8A-HR8-215-010 HLDR,HP
15 8A-HR8-218-010 BAT-CONTACT,M
16 8A-HR8-217-010 BAT-CONTACT,P
17 8A-HR8-009-010 KEY,CONT
18 8A-HR8-008-010 LID,BAT SIL
19 8A-HKF-008-010 CABI,REAR 307 SIL
20 8A-HR8-011-010 KNOB,SL
21 8A-HKF-003-010 PANEL,REAR
A 87-067-535-010 SCREW VT+1.4-3.5
B 87-067-388-010 SCREW

TAPE MECHANISM EXPLODED VIEW 1 / 1
- 13 -
24
20
33
21
CB8
7
7
6
6
5
5
4
4
3
3
9
9
18
19
17
13
14
12 16
15
11
2
23
29
28 10
26
25
34
10
1
38
22
22
27
30
36
35
31
37
32
A

DESCRIPTIONREF.NO. KANRI
NO.
PARTNO. KANRI
NO.
REF.NO. DESCRIPTIONPARTNO.
TAPE MECHANISM PARTS LIST 1 / 1
- 14 -
1 8A-HR8-003-010 FRAME CENTER
2 S8-505-240-000 GEAR SHAFT
3 S8-505-070-000 REEL GEAR T
4 S8-505-080-000 CLUTCH GEAR
5 S8-505-300-000 FELT
6 S8-505-200-000 CLUTCH SP
7 S8-505-120-000 REEL GEAR BUSH
8 S8-505-290-000 REFLECTING PLATE
9 S8-505-210-000 BRACK TENSHION SP
10 S8-000-100-000 REEL CAP
11 S8-505-090-000 FWD GEAR PLATE
12 S8-505-060-000 FWD GEAR
13 S8-505-250-000 GEAR PLATE PIN
14 S8-505-220-000 FWD GEAR SP
15 S8-505-050-000 CENTER GEAR
16 S1-2X2-5X0-25L L CUT W
17 S8-505-320-000 FF GEAR HOLDER
18 S8-505-330-000 FF GEAR
19 S8-505-310-000 GEAR HOLDER SP
20 S8-550-3K0-000 FLYWHEEL R ASSY
21 87-A91-563-010 MOTOR(IBIGB02)
22 S1-2X2-5X0-1LC L CUT W
23 SV-500-000-000 SUB BELT
24 SV-190-000-000 MAIN BELT
25 S8-505-100-000 FWD ARM
26 S8-505-110-000 REV ARM
27 S8-505-260-000 SUB CHASSIS
28 S8-505-160-000 REV SELECT
29 S8-505-190-000 SELECT SP
30 S8-505-020-000 HEAD BASE
31 S7-000-080-000 PINCH ROLLER
32 87-A91-019-010 HEAD ASSY(PH8ZM-3)
33 S8-550-4K0-000 FLYWHEEL L ASSY
34 S8-300-160-000 HEAD BASE SP
35 S8-300-170-000 PINCH SP FWD
36 S8-500-090-000 PINCH SP REV
37 8A-HR8-214-010 SPR-P CASS
38 S8-505-130-000 COVER
A S1-PB1-7X5-500 SCREW 1.7-5.5
B S3-PY1-7X2-500 SCREW 1.7-2.5
C S3-PB1-7X3-000 SCREW

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