Aiwa CT-X311, CT-X411, CT-X421, CT-X4210, CT-X4250 Service Manual
CT-X311
YZ(ST)
CT-X321
CT-X411
CT-X421
CT-X4210
CT-X4250
YZ(ST)
YU(ST)
YU(ST)
YL(ST)
YL(ST)
SERVICE MANUAL
STEREO CAR
CASSETTE RECEIVER
BASIC TAPE MECHANISM : CDS-363AG1-A
S/M Code No. 09-012-354-5N1
DATA
SPECIFICATIONS
RADIO SECTION
(FM)
Frequency Range: 87.5 MHz–108 MHz
(100-kHz steps) [Except YZ]
87.5 MHz–108 MHz
(50-kHz steps)
Usable Sensitivity: 12.7 dBf
50 dB Quieting Sensitivity: 17.2 dBf
IF Rejection: 80 dB
Frequency Response: 30 Hz-15,000 Hz
S/N Ratio: 63 dB
Stereo Separation: 35 dB at 1 kHz
Alternate Channel Selectivity: 70 dB
Capture Ratio: 3 dB
(AM(MW)) [YU,YL]
Frequency Range: 530 kHz–1,710 kHz
(10-kHz steps)
531 kHz–1,602 kHz
(9-kHz steps)
Usable Sensitivity: 30 µV (30 dB)
(MW) [YZ]
Frequency Range: 531 kHz–1,602 kHz
(9-kHz steps)
530 kHz–1,710 kHz
(10-kHz steps)
Usable Sensitivity: 30 µV (30 dB)
TAPE SECTION
Tape Speed: 4.8 cm/sec. (17/8 ips)
S/N Ratio: 50 dB
Frequency Response: 40 Hz–14,000 Hz
Stereo Separation: 40 dB
AUDIO SECTION
Max. Power Output: 40 W x 4 channels
AUX IN input
Input sensitivity (load impedance)
AUX IN: 300 mV (10 kΩ)
GENERAL
Power-Supply Voltage: 14.4 V (11 to 16 V allowable),
DC, negative ground
Load Impedance: 4Ω
Tone Control: Bass ± 10 dB at 100 Hz
Treble ± 10 dB at 10 kHz
Preamp Output Voltage (load impedance):
2.2 V (10 kΩ)
Installation size: 182(W) x 53(H) x 155(D) mm
(71/4(W) x 21/8(H) x 61/8(D) inches)
• Design and specifications are subject to change without notice.
(LW) [YZ]
Frequency Range: 144 kHz–288 kHz
(1-kHz/9-kHz steps)
Usable Sensitivity: 30 µV (30 dB)
-2-
ACCESSORIES LIST
REF. NO PART NO. KANRI DESCRIPTION
NO.
1 8B-KTG-904-010 IB,YL(3L) 4210,4250<E,F>
1 8B-KTG-902-010 IB,YU(3L) 411<B>
1 8B-KTG-901-010 IB,YU(3L) 421<A>
1 8B-KTG-903-010 IB,YZ(9L) 321,311<C,D>
2 8B-KT9-902-010 IB,INST,YU,YL (3L,P)-C<A,B,E,F>
2 8B-KT9-904-010 IB,INST,YZ,YV (9L,R)-C<C,D>
3 8Z-KC1-235-010 HLDR,REAR MTG
4 8Z-KC1-231-110 HLDR,HALF -C
5 8B-KTG-608-010 CONN ASSY,16P SSS<A,B,E,F>
6 8Z-KC1-030-010 CASE,DFP -C
7 8Z-KC1-232-010 KEY,REMOVE -C
8 87-B10-216-010 U+2.6-4.0 ZINC BLK (BH M2.6)
9 87-B10-141-010 NUT,5 TYPE-2
10 8Z-KC1-244-010 S-SCREW,5*6 TH+ TAPPING ST
11 8Z-KC1-250-010 S-SCREW,HEXAGON
12 8Z-KTG-951-010 SPKR,16CM ASSY<F>
13 87-B10-143-010 UT1+5-15 W/O SLOT
14 87-B10-144-010 W,5.2-10-0.5
15 87-B10-145-010 W-SPR,5.3-8.5-1.5
TYPE MODEL NAME SUFFIX
A CT-X421 YU
B CT-X411 YU
C CT-X311 YZ
D CT-X321 YZ
E CT-X4210 YL
F CT-X4250 YL
-3-
ELECTRICAL MAIN PARTS LIST - 1/2
REF. NO PART NO. KANRI DESCRIPTION
IC
8Z-KT1-622-010 C-IC,LC75374E
8Z-KTG-622-010 IC,TA8259H
87-A21-191-010 IC,KIA6225S
87-A21-441-010 C-IC,TC9297FB
87-A21-929-030 C-IC,TC9323F-027
TRANSISTOR
87-A30-476-010 TR,KTA1046Y
87-A30-468-040 C-TR,KRC102S-RTK
87-A30-470-040 C-TR,KTC3875SY-RTK
87-A30-471-040 C-TR,KTA1504SY-RTK
8Z-KTH-626-080 TR,KTC3203Y
87-A30-487-080 TR,KRC111M-AT
87-A30-473-080 TR,KRC102M-AT
87-A30-467-040 C-TR,KRA111S-RTK
87-A30-469-040 C-TR,KRC111S-RTK
87-A30-295-080 TR,KRA226M
87-A30-016-010 TR,KTD2058Y
DIODE
87-020-465-080 DIODE,1SS133 (110MA)
87-A40-798-010 DIODE,1N5402 (3A/200V)
87-001-783-080 DIODE,1N4002
87-017-932-080 ZENER,MTJ6.2B
87-A40-509-080 ZENER,MTZJ6.8C
87-A40-504-040 C-DIODE,KDS184
87-A40-624-080 ZENER,MTZJ10A
87-070-136-080 ZENER,MTZJ5.1B
87-A40-817-040 C-ZENER,STZ6.8N
MAIN C.B
ANT101 87-A92-038-010 ANT,MSP-403
C101 87-018-119-080 CAP, CER 100P-50V
C102 87-A11-145-080 CAP,TC U 0.01-50 Z F
C103 87-A11-128-080 CAP,TC U 4700P-50 K B
C104 87-010-263-040 CAP,E 100-10
C105 87-010-787-080 CAP, U 0.022-25
C106 87-010-263-040 CAP,E 100-10
C107 87-010-263-040 CAP,E 100-10
C108 87-010-757-080 C.CAP,U 0.047-25F
C109 87-A11-145-080 CAP,TC U 0.01-50 Z F
C110 87-010-759-080 C-CAP,U, 0.1-25F
C111 87-012-286-080 CAP, U 0.01-25
C112 87-012-286-080 CAP, U 0.01-25
C113 87-010-759-080 C-CAP,U, 0.1-25F
C114 87-010-787-080 CAP, U 0.022-25
C115 87-012-286-080 CAP, U 0.01-25
C116 87-010-495-040 CAP,E 2.2-50 GAS
C121 87-010-785-080 C-CAP,U0.015-25BK<C,D>
C121 87-010-787-080 CAP, U 0.022-25<A,B,E,F>
C122 87-010-785-080 C-CAP,U0.015-25BK<C,D>
C122 87-010-787-080 CAP, U 0.022-25<A,B,E,F>
C123 87-016-526-080 C-CAP,S 0.47-16 BK
C124 87-016-526-080 C-CAP,S 0.47-16 BK
C151 87-012-286-080 CAP, U 0.01-25
C152 87-012-180-080 C-CAP,U 22P-50 CH
C201 87-012-274-080 CHIP CAP,U 1000P-50B
C202 87-012-274-080 CHIP CAP,U 1000P-50B
C203 87-010-378-040 CAP,E 10-16
C204 87-010-378-040 CAP,E 10-16
C205 87-010-263-040 CAP,E 100-10
C206 87-010-263-040 CAP,E 100-10
C207 87-010-787-080 CAP, U 0.022-25
C208 87-010-787-080 CAP, U 0.022-25
C209 87-010-494-040 CAP,E 1-50 GAS
C210 87-010-494-040 CAP,E 1-50 GAS
NO.
REF. NO PART NO. KANRI DESCRIPTION
C211 87-010-263-040 CAP,E 100-10
C212 87-010-380-040 CAP,E 47-16 SME
C301 87-010-401-040 CAP,E 1-50 SME
C302 87-010-401-040 CAP,E 1-50 SME
C303 87-012-274-080 CHIP CAP,U 1000P-50B
C304 87-012-274-080 CHIP CAP,U 1000P-50B
C401 87-010-494-040 CAP,E 1-50 GAS
C402 87-010-494-040 CAP,E 1-50 GAS
C403 87-010-805-080 CAP, S 1-16
C404 87-010-805-080 CAP, S 1-16
C405 87-012-280-080 CAP, U 3300P-50
C406 87-012-280-080 CAP, U 3300P-50
C407 87-010-787-080 CAP, U 0.022-25
C408 87-010-787-080 CAP, U 0.022-25
C409 87-010-498-040 CAP,E 10-16 GAS
C410 87-010-498-040 CAP,E 10-16 GAS
C411 87-A11-177-080 C-CAP,S 0.15-16 K B
C412 87-A11-177-080 C-CAP,S 0.15-16 K B
C413 87-A11-177-080 C-CAP,S 0.15-16 K B
C414 87-A11-177-080 C-CAP,S 0.15-16 K B
C415 87-010-498-040 CAP,E 10-16 GAS
C416 87-010-498-040 CAP,E 10-16 GAS
C417 87-010-072-040 CAP,E 2.2-50 5L
C418 87-010-495-040 CAP,E 2.2-50 GAS
C419 87-010-072-040 CAP,E 2.2-50 5L
C420 87-010-495-040 CAP,E 2.2-50 GAS
C423 87-010-759-080 C-CAP,U, 0.1-25F
C424 87-010-553-040 CAP,E 47-16 GAS
C426 87-010-379-040 CAP,E 22-16 M SME
C427 87-012-358-080 C-CAP,S 0.47-10 F Z
C428 87-012-358-080 C-CAP,S 0.47-10 F Z
C429 87-010-831-080 C-CAP,U,0.1-16F
C430 87-012-286-080 CAP, U 0.01-25
C431 87-010-759-080 C-CAP,U, 0.1-25F
C432 87-010-759-080 C-CAP,U, 0.1-25F
C433 87-010-553-040 CAP,E 47-16 GAS
C501 87-016-526-080 C-CAP,S 0.47-16 BK
C502 87-016-526-080 C-CAP,S 0.47-16 BK
C503 87-016-526-080 C-CAP,S 0.47-16 BK
C504 87-016-526-080 C-CAP,S 0.47-16 BK
C505 87-012-273-080 C-CAP,U 820P-50 B
C506 87-012-273-080 C-CAP,U 820P-50 B
C507 87-012-273-080 C-CAP,U 820P-50 B
C508 87-012-273-080 C-CAP,U 820P-50 B
C509 87-010-378-040 CAP,E 10-16
C510 87-010-759-080 C-CAP,U, 0.1-25F
C511 8A-KC7-623-000 CAP,E 2200U-16 BT(125C)
C512 87-012-274-080 CHIP CAP,U 1000P-50B
C513 87-010-494-040 CAP,E 1-50 GAS
C514 87-010-378-040 CAP,E 10-16
C601 87-016-526-080 C-CAP,S 0.47-16 BK
C602 87-012-180-080 C-CAP,U 22P-50 CH
C603 87-012-182-080 C-CAP,U 27P-50 CH
C606 87-010-787-080 CAP, U 0.022-25
C607 87-A10-189-040 CAP,E 220-10
C609 87-018-134-080 CAPACITOR,TC-U 0.01-16
C610 87-018-209-080 CAP, CER 0.1-50V
C611 87-018-209-080 CAP, CER 0.1-50V
C701 87-012-278-080 C-CAP,U 2200P-50 B
C702 87-010-759-080 C-CAP,U, 0.1-25F
C703 87-018-205-080 CAP, CERA-SOL 0.022
C704 87-010-263-040 CAP,E 100-10
C705 87-010-759-080 C-CAP,U, 0.1-25F
C706 87-010-935-040 CAP,E 220-16 M VR
C801 87-010-378-040 CAP,E 10-16
C802 87-010-075-040 CAP,E 10-16 5L
C803 87-012-271-080 CAP, U 560P-50
C804 87-012-271-080 CAP, U 560P-50
C805 87-010-378-040 CAP,E 10-16<A>
C806 87-010-378-040 CAP,E 10-16<A>
NO.
-4-
ELECTRICAL MAIN PARTS LIST - 2/2
TYPE MODEL NAME SUFFIX
A CT-X421 YU
B CT-X411 YU
C CT-X311 YZ
D CT-X321 YZ
E CT-X4210 YL
F CT-X4250 YL
REF. NO PART NO. KANRI DESCRIPTION
C807 87-012-271-080 CAP, U 560P-50<A>
C808 87-012-271-080 CAP, U 560P-50<A>
CN201 87-099-408-010 CONN,8P EH V WHT
CN202 87-A60-620-010 CONN,3P V 2MM JMT
CN601 88-KTA-603-010 CONN,15P CAM-B68
CN701 8Z-KT1-624-010 CONN,16P SOC017<A,B,E,F>
CNA201 8Z-KTG-652-010 CONN ASSY,8P MOTOR
CNA202 8Z-KTG-651-010 CONN ASSY,3P HEAD
CNA701 8A-KT1-645-010 CONN ASSY,8P ISO-BLACK-B<C,D>
CNA702 8A-KT1-646-010 CONN ASSY,8P ISO-WHITE-B<C,D>
D612 87-027-262-010 LEDE,TLR-124(RED)
!!
!F701 8Z-KC1-621-010 FUSE,15A 32V
!!
J801 87-A61-225-110 JACK,PIN 2P XR-401<EXCEPT A>
J801 87-A61-224-110 JACK,PIN 4P XR-401<A>
L101 87-003-143-080 COIL 4.7 UH
L102 8Z-KT1-619-010 COIL,68MH K7-D
L103 87-003-097-080 COIL,1UH
L301 87-003-143-080 COIL 4.7 UH
L601 87-003-149-080 COIL,47UH
L602 87-003-149-080 COIL,47UH
L701 8B-KCF-615-010 FLTR,AMORPHOUS -CHOKE
S601 87-A91-152-010 SW,SL 1-1-2 SSSS212-11-A
TU101 8B-KCF-622-010 TU UNIT, FAE347-A21<C,D>
TU101 8B-KCF-621-010 TU UNIT, FAE347-A22<A,B,E,F>
X601 87-A70-325-010 VIB,XTAL 4.5MHZ HC-49/S
FRONT C.B
C1001 87-012-358-080 C-CAP,S 0.47-10 F Z
C1002 87-012-286-080 CAP, U 0.01-25
CN1001 88-KTA-602-010 CONN,15P CAM-B67
D1007 87-A91-355-040 C-LED,BR1112H-TR-RED
D1008 87-A91-355-040 C-LED,BR1112H-TR-RED
D1009 87-A91-355-040 C-LED,BR1112H-TR-RED
D1010 87-A92-042-090 LED,KM2520MBC30 BLU<EXCEPT C>
D1010 87-A41-087-010 LED,KM2520SEC04 AMB<C>
D1011 87-A92-042-090 LED,KM2520MBC30 BLU<EXCEPT C>
D1011 87-A41-087-010 LED,KM2520SEC04 AMB<C>
NO.
REF. NO PART NO. KANRI DESCRIPTION
D1012 87-A92-042-090 LED,KM2520MBC30 BLU<EXCEPT C>
D1012 87-A41-087-010 LED,KM2520SEC04 AMB<C>
LCD1001 8B-KTG-610-010 LCD,BKT-16-17
PL1001 8B-KTG-605-010 LAMP,9V-60MA W/CAP-B<EXCEPT C>
PL1001 8B-KCF-631-010 LAMP,9V-65MA<C>
PL1002 8B-KTG-605-010 LAMP,9V-60MA W/CAP-B<EXCEPT C>
PL1002 8B-KCF-631-010 LAMP,9V-65MA<C>
S1001 87-036-339-080 C-SW,TACT SKQM
S1002 87-A91-987-080 SW,TACT SKQCAB
S1003 87-036-339-080 C-SW,TACT SKQM
S1004 87-036-339-080 C-SW,TACT SKQM
S1005 87-A91-987-080 SW,TACT SKQCAB
S1006 87-A91-987-080 SW,TACT SKQCAB
S1007 87-036-339-080 C-SW,TACT SKQM
S1008 87-A91-987-080 SW,TACT SKQCAB
S1009 87-036-339-080 C-SW,TACT SKQM
S1010 87-A91-987-080 SW,TACT SKQCAB
S1011 87-A91-987-080 SW,TACT SKQCAB
S1012 87-036-339-080 C-SW,TACT SKQM
S1013 87-A91-987-080 SW,TACT SKQCAB
S1015 87-A91-987-080 SW,TACT SKQCAB
S1016 87-036-339-080 C-SW,TACT SKQM
S1017 87-A91-986-010 SW,RTRY EC12E24504-15MM
AUX C.B
J1001 85-HRL-623-010 JACK,3.5 ST BLK
W1001 8A-KC7-611-010 F-CABLE,3P (AUX)
HEAD C.B
NO.
• 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
Wattage Type Tolerance
1/16W 1005 5% CJ
1/16W
1/10W
1/8W
CHIP RESISTOR PART CODE
Chip Resistor Part Coding
88
A
Resistor Code
1608
2125
3216
5%
5%
5%
Symbol
CJ
CJ
CJ
Figure
Value of resistor
-5-
Form
L
W
Dimensions (mm)
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
Resistor Code
108
118
128
: A
: A
TRANSISTOR ILLUSTRATION
E C B
KTC3203
E C B
KRA226M
KRC102M
KRC111M
B C E
KTA1046
KTD2058
C
B
E
KRA111S
KRC102S
KRC111S
KTA1504S
KTC3875S
-6-
BLOCK DIAGRAM - 1/1
-7-
,
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