Page 1
CR-AS24
YZ(S)
SERVICE MANUAL
RADIO RECEIVER
• This Service Manual is the “Revision Publishing” and replaces “Simple Manual”
of CR-AS24 <YZ(S)>, (S/M Code No. 09-023-457-5T1).
S/M Code No. 09-024-457-5R1
REVISION
DATA
Page 2
SPECIFICATIONS
Frequency range: FM: 87.5 - 108 MHz
Maximum output: 160 mW (EIAJ 4
Power source: DC 3 V using two R6 (size AA) batteries
Speaker: Diameter 57 mm, 4 Ω
Maximum dimensions: 67.6 (W) x 114.7 (H) x 28.6 (D) mm (excluding projecting parts and controls)
Weight: Approx. 133 g (excluding batteries)
• Design and specifications are subject to change without notice.
AM: 530 - 1,605 kHz
Ω)
– 2 –
Page 3
ELECTRICAL PARTS LIST
! = ! SAFETY PARTS
C = Components marked
UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL
CR-AS24
YZBSC
MAIN O C 0001 87-012-188-080 CHIP C CAP 47PF 50V +/-10% (1 a
MAIN X C 0002 S8-056-250-500 CHIP CAP 25PF 50V +/-10% (160 a
MAIN O C 0003 87-012-188-080 CHIP C CAP 47PF 50V +/-10% (1 a
MAIN O C 0004 87-A10-801-080 C-CAP S CER 0.022UF 16V +/-10 a
MAIN O C 0005 87-A10-468-080 ELECT CAPACITOR 10UF 10V +/-2 a
MAIN O C 0006 87-012-167-080 C-CAP 5PF 50V +/-0.25P NPO 16 a
MAIN O C 0007 87-012-180-080 C-CAP 22P 50V +/-5% NPO 1608 a
MAIN O C 0008 87-012-182-080 CHIP CAP NPO 27PF 50V +/-5% ( a
MAIN O C 0009 87-012-168-080 CHIP C CAP 6PF 50V +/-0.25PF a
MAIN O C 0010 87-012-164-080 CHIP C.CAP 2PF 50V +/-0.25PF a
MAIN O C 0012 87-010-403-080 ELECT.CAPACITOR 3.3UF 50V +/- a
MAIN X C 0013 S8-036-103-500 CHIP C-CAP S 0.01UF 16V +/-10 a
MAIN O C 0014 87-A10-468-080 ELECT CAPACITOR 10UF 10V +/-2 a
MAIN O C 0015 87-010-404-080 ELECT CAPACITOR 4.7UF 50V +/- a
MAIN O C 0016 87-A10-468-080 ELECT CAPACITOR 10UF 10V +/-2 a
MAIN O C 0017 87-A10-801-080 C-CAP S CER 0.022UF 16V +/-10 a
MAIN O C 0018 87-010-400-080 ELECT.CAPACITOR 0.47UF 50V +/ a
MAIN O C 0019 87-A10-468-080 ELECT CAPACITOR 10UF 10V +/-2 a
MAIN X C 0020 S5-140-104-400 CERAMIC CAPACITOR 0.1UF 25V + a
MAIN O C 0021 87-010-221-080 ELECT CAP 470UF 10V +/-20% (6 a
CR-AS24
YZBSC
MAIN O C 0022 87-016-453-080 CHIP C-CAP 0.1UF 16V +80% -20 a
MAIN O C 0023 87-010-221-080 ELECT CAP 470UF 10V +/-20% (6 a
MAIN X C 0024 S8-036-103-500 CHIP C-CAP S 0.01UF 16V +/-10 a
MAIN O C 0025 87-A10-801-080 C-CAP S CER 0.022UF 16V +/-10 a
MAIN X C 0026 S8-036-103-500 CHIP C-CAP S 0.01UF 16V +/-10 a
MAIN O CF 0001 S1-910-010-300 CERAMIC FILTER 450KHZ SFU450B a
MAIN O CF 0002 S2-310-011-700 CERAMIC FILTER 10.7MHZ MA5-A a
MAIN O CF 0003 S2-310-010-100 DISCRMINATOR FILTER CDA10.7MH a
MAIN S D 0001 82-135-799-010 DIODE IN4148-US-T (TAPE TYPE a
MAIN S D 0002 82-135-799-010 DIODE IN4148-US-T (TAPE TYPE a
MAIN O HP 0001 S1-210-011-500 DIA3.5 STEREO JACK TC38-010 a
MAIN S IC 0001 S2-522-426-000 IC KA22426D a
MAIN O L 0001 8B-RT9-601-010 FM SPRING COIL DIA 3.5x4.5Tx0 a
MAIN O L 0002 S1-110-020-000 FM SPRING COIL DIA3.5x3.5Tx0. a
MAIN O L 0003 8B-RT9-601-010 FM SPRING COIL DIA 3.5x4.5Tx0 a
MAIN O L 0005 S1-110-013-200 AM OSC COIL 8441A 7ZO-93100 ( a
MAIN O L 0006 S1-110-100-121 AM BAR ANTENNA SET 10x50MM (A a
MAIN O L 0009 S2-810-010-600 AXIAL LEAD INDUCTOR 1.5uH 1/8 a
MAIN O LED0001 S5-570-100-100 DIA3.0MM LED LAMP (RED) 202HD a
MAIN X PVC0001 S2-010-015-500 PVC AM/FM FC-22125-4N000-0 a
CR-AS24
YZBSC
MAIN O R 0001 88-118-153-080 CHIP RESISTOR 15K OHM 1/10W + a
MAIN X R 0002 88-118-122-080 CHIP RESISTOR 1.2K OHM 1/10W a
MAIN O R 0003 88-118-331-080 CHIP RESISTOR 330 OHM 1/10W + a
MAIN O R 0004 88-118-102-080 CHIP RESISTOR 1K OHM 1/10W a
MAIN O R 0005 88-118-472-080 CHIP RESISTER 4.7K OHM 1/10W a
MAIN O R 0006 88-121-104-080 CARBON FILM RESISTOR 100K OHM a
MAIN X R 0007 88-118-220-080 CHIP RESISTOR 22 OHM 1/10W +/ a
MAIN X R 0008 88-118-152-080 CHIP RESISTOR 1.5K OHM 1/10W a
MAIN X R 0009 88-118-221-080 CHIP RESISTOR 220 OHM 1/10W + a
MAIN X R 0010 88-118-151-080 CHIP RESISTOR 150 OHM 1/10W + a
MAIN O R 0011 88-118-102-080 CHIP RESISTOR 1K OHM 1/10W a
MAIN O SW 0001 S3-112-005-000 SLIDE SWITCH SKA-12D01S-G4-NA a
MAIN O T 0001 S1-007-000-600 AM IFT 7.8X7.8X12.5MM (WHITE) a
MAIN O VR 0001 S1-050-311-200 ROTARY VOL R121S-10-1.5F-A50K a
MAIN X W 0001 S2-021-001-100 UL-1007 STRANDED AWG#30 100MM a
MAIN X W 0002 S2-040-901-100 UL-1007 STRANDED AWG#30 L=90M a
MAIN X W 0003 S2-010-501-100 UL-1007 STRANDED AWG#30 50MM a
MAIN X W 0004 S2-020-301-100 UL-1007 STRANDED AWG#30 30MM a
MAIN X W 0005 S2-001-101-100 UL-1007 STRANDED AWG#30 110MM a
MAIN X W 0006 S2-090-401-100 UL-1007 STRANDED AWG#30 40MM a
All components used on this model at the production line are shown in this service manual.
However, please note that not all components will be available as spare parts for after-sales service.
Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
– 3 –
Page 4
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
– 4 –
Page 5
WIRING (MAIN) <1 / 2>
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
A
MAIN C.B (COMPONENT SIDE)
B
PVC1
TUNE
B-
B+
TC3
TC4
5
3
C20
C5
L9
A
PVC1
VC1C
VC10
L5
1
C12
2
C19
JP6
C21
SP-
TC1
VC1A
VC1B
TC2
CF3
C18
L3
C16
JP3
L2
R6
C15
D1
CF2
L10
L1
C14
JP5
D2
JP1
1
C23
B
T1
5
2
3
JP8
3
4
JP4
SP+
2
JP7
CF1
ANT
1
JP2
SW1
2
3
4
5
HP1
3
2
1
VR1
1
VR1
VOL
SW1
FM
AM
HP1
NOTE :
JPX
DX
LX
LXX
LXX
RX
CXX
CXX
CXX
CFX
CFX
CFX
C
D
E
F
G
H
I
+
+
J
K
L
M
N
O
P
Q
R
S
– 5 –
T
U
Page 6
MAIN C.B (CONDUCTOR SIDE)
W6
FM ROD ANT
R8
LED1
C10
R9
W1
IC1
1
5
1014
15
ANT
B
C1
R11
C7
C2
R1
C25
R5
C26
C3
R3
R2
C8
R10
C9
C6
C24
C4
C22
R7
R4
C13
B-
B+
A
SP-
C17
SP+
20
25 28
SPEAKER
4 ohms
SP+
SP-
<YEL>
<BRN>
W2
W3
+
W5
W4
BATTERY
R6 X 2
(DC 3V)
L6
(AM BAR ANTENNA)
<WHT>
<BLK>
<GRN>
<RED>
RXX
CXX
LEDX
NOTE :
LED1
TUNING
INDICATOR
WIRING (MAIN) <2 / 2>
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
A
B
C
D
E
F
G
H
J
K
L
I
M
N
O
P
Q
R
S
T
U
– 6 –
Page 7
SCHEMATIC DIAGRAM
MAIN C.B
FM ROD ANT
W6
TP1
C1 47p
L1
FM SPRING COIL
C2
25p
2
SW1
SWITCH
SKA-12D01S-G4-NA
C24
0.01
D1
1N4148
D2
1N4148
1
AM
FM
3
C4
0.022
C3 47p
TP2
R2 1.2K
1
2
3
C5
10/10
R3 330
4
5
TC4
C6
5p
L6, TC4
AM TRACKING
ADJUSTMENT
FM / AM
IF OUT
R6 100K
BAND
SELECT
L6
(AM BAR ANTENNA)
VC10
B
W
14
15
13
RF
GND
AM
IF IN
16
C7 22p
G
R
L3
FM SPRING COIL
L3, TC1
FM TRACKING
ADJUSTMENT
R9 220
12
FM
RF IN
11
NC
IC1 KA22426D
FM
IF IN
17
NC
18
PVC AM/FM FC-22125-4N000-0
TC1
10
AM
RF IN
TUNING
METER
19
R4
1K
PVC1
TC1 - 4
(
VC10, 1A, 1B, 1C
TUNE
VC1A
9
FM
RF
AM / FM TUNER SYSTEM & POWER AMP
IF
GND
20
VC1B
8
REG
OUT
AFC
AGC
21
)
TC2
C8 27p
L2, TC2
FM FREQUENCY
RANGE ADJUSTMENT
7
FM
OSC
AFC
AGC
22
6
AFC
DET
OUT
23
TP3
R8 1.5K
C26
0.01
C10
2p
5
AM
OSC
AF
IN
24
C18
0.47 / 50
R5
4.7K
L2
FM SPRING
COIL
4
VOL
RIPPLE
FILTER
25
LED1
DIA3.0MM
VC1C
1
3
5
2
L5 AM OSC COIL
L5, TC3
AM FREQUENCY
RANGE ADJUSTMENT
C12 3.3 / 50
3
NF
VCC
26
LED LAMP
(RED)202HD
2
FM
DISC
OUT
27
TUNING
INDICATOR
TC3
MUTE
1
GND
28
C9
6p
R10
150
CF3 10.7MHZ
C23
470 / 10
C25
0.022
W1
L9
1.5uH
R11 1K
SW2 NM
W5
W3
W2
TP4
R7
22
2
W4
1
2
3
4
5
1
3
SP-
SP+
VR1
ROTARY VOL
R121S-10-1.5F-A50K
VOL
R1
15K
BATTERY
R6 X 2
(DC 3V)
SPEAKER
4 ohms
HP1
T1
AM IFT
AM IF ADJUSTMENT
VOLTAGE CHART
PIN
IC1
KA22426D
VCC = 3.0V
FM
AM
PIN
FM
AM
1
0
0
15
1.28
0
C13
0.01
CF1
450KHZ
2
2.18
2.70
16
0
0
3
1.50
1.50
17
1.27
0
CF2
10.7MHZ
4
0.76
0.76
18
0
0
5
1.22
1.22
19
0
0
C14
10 / 10
1.42
1.07
20
C15
4.7 / 50
C16
10 / 10
C17
0.022
C19
10 / 10
C21
470 / 10
C20
0.1
C22
0.1
SIGNAL :
FM
6
0
0
7
1.22
1.22
21
0.82
1.47
8
1.22
1.22
22
1.43
1.08
9
1.22
1.22
23
1.61
0.97
10
1.22
1.22
24
0
0
11
0
0
25
2.70
2.70
12
0.32
0
26
3.00
3.00
13
0
0
27
1.52
1.52
14
0.40
0.10
28
0
0
AM
NOTE :
NM = NO MOUNT
+
CXX
LXX
+
RXX
– 7 –
Page 8
IC BLOCK DIAGRAM
– 8 –
Page 9
ADJUSTMENT
MAIN C.B (COMPONENT SIDE)
L6
PVC1
5
L3
TC1
TC3
3
2
TC4
L5
TC2
L2
T1
4
1
1. AM IF Adjustment
Settings : Test point IC1(KA22426D) pin 23
Adjustment Location : T1
T1 ............................................................... 450kHz
2. AM Frequency Range Adjustment
Settings : Test point IC1(KA22426D) pin 23
Adjustment Location : L5, TC3
L5 ............................................................... 515kHz ± 5kHz
TC3 ............................................................. 1635kHz ± 20kHz
3. AM Tracking Adjustment
Settings : Test point IC1(KA22426D) pin 23
Adjustment Location : L6, TC4
L6 ............................................................... 600kHz
TC4 ............................................................. 1400kHz
4. FM Frequency Range Adjustment
Settings : Test point IC1(KA22426D) pin 23
Adjustment Location : L2, TC2
L2 ............................................................... 87.4MHz +0.1/-0.2MHz
TC2 ............................................................. 108.3MHz ± 0.2MHz
5. FM Tracking Adjustment
Settings : Test point IC1(KA22426D) pin 23
Adjustment Location : L3, TC1
L3 ............................................................... 88MHz
TC1 ............................................................. 108MHz
– 9 –
Page 10
MECHANICAL EXPLODED VIEW
2
17
1
3
4
5
15
A
6
11
15
B
C
7
10
8
12
13
16
9
D
D
14
– 10 –
Page 11
MECHANICAL PARTS LIST
! = ! SAFETY PARTS
C = Components marked
UNIT-NAME ! C REF-NO P ARTS-NO PARTS-NAME SUFFIX&MODEL
CR-AS24
YZBSC
0 MC1001 8C-RCF-011-010 LENS,DIAL YZ PMMA, J-802S a
0 MC1002 8C-RCF-006-010 BAND SWITCH ABS, J-114Y a
0 MC1003 8C-RCF-001-010 FRONT CABI ABS, J-NL008,T-MS6 a
0 MC1004 8C-RCF-007-010 TUNE KNOB ABS, J-NL009 a
0 MC1005 8C-RCF-005-010 POINTER LDPE, J-191Y a
0 MC1006 8C-RCF-008-010 VOL. KNOB ABS, J-NL089 a
0 MC1007 8C-RCF-201-010 HLDR JOIN a
X MC1008 S3-015-010-100 CRC15 MAIN PCB 94HB-A T=1.2MM a
0 MC1009 8C-RCJ-016-010 STRAP,HAND GRAY 200MM a
0 MC1010 S1-009-011-000 BAR HOLDER-NYLON a
0 MC1011 S2-010-012-301 FM ROD ANT 5 SECTION a
0 MC1012 85-RT5-202-010 CONTACT TERMINAL 2.6 DIAx12-0 a
0 MC1013 8C-RCF-009-010 CABI REAR YZ/YL ABS,J-NL008, a
0 MC1014 8C-RCF-203-010 BATT, CONTACT(+) a
0 MC1015 8C-RCF-204-010 BATT,CONTACT(-) a
0 MC1016 8C-RCF-003-010 DOOR,BATT ABS, J-NL008,T-MS68 a
0 MC1017 S1-010-032-500 SLIM MYLAR SPEAKER DIA=57MM 0 a
0 MC1A 87-268-529-310 PAN (PHILIP). M-SCREW M1.7x4m a
0 MC1B 87-265-071-210 PAN (PHILIP) M-SCREW M2.6x4MM a
0 MC1C 87-251-070-410 PAN (PHILIP) M-SCREW M2.6x3MM a
CR-AS24
YZBSC
0 MC1D 87-841-034-410 PAN(PHILIP) S-SCREW(B) M2X5mm a
All components used on this model at the production line are shown in this service manual.
However, please note that not all components will be available as spare parts for after-sales service.
Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
– 11 –
Page 12
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 HT Transparent Gray
HM Metallic Gray NH Champagne Gold M Wood Pattern
– 12 –
Page 13
ACCESSORIES PARTS LIST
! = ! SAFETY PARTS
C = Components marked
UNIT-NAME ! C REF-NO P ARTS-NO PARTS-NAME SUFFIX&MODEL
CR-AS24
YZBSC
0 001 S1-210-012-800 3.5mm MONO EARPHONE & PLUG W/ a
0 002 8C-RCF-905-010 IB YZ(EGFSID) GHC AS24 a
0 003 8C-RCF-906-010 IB YZ(POHNCZ) GHC AS24 a
0 004 8C-RCJ-016-010 STRAP,HAND GRAY 200MM a
All components used on this model at the production line are shown in this service manual.
However, please note that not all components will be available as spare parts for after-sales service.
Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
– 13 –
Page 14
OTHER PARTS LIST
! = ! SAFETY PARTS
C = Components marked
UNIT-NAME ! C REF-NO P ARTS-NO PARTS-NAME SUFFIX&MODEL
CR-AS24
YZBSC
X 8C-RCF-851-010 COVER TOP YZB a
X 8C-RCF-852-010 COVER BOT YZB a
X S0-201-480-000 SLOW DENSITY SPONGE 18x9x7 a
X S8-810-010-200 EYELET DIA1.5 X 4MM a
X S8-810-010-000 EYELET DIA2 X 4MM a
X S3-015-010-100 CRC15 MAIN PCB 94HB-A T=1.2MM a
X S2-080-901-100 UL-1007 STRANDED AWG#30 90MM a
X S4-002-000-500 SPONGE “W8 X L12MM” a
X S4-002-000-500 SPONGE “W8 X L12MM” a
X 87-B40-281-010 LBL,BAR-CODE A a
X 87-B50-078-010 LIST FACILITY(S)-0007 a
X S0-200-030-000 POLYBAG W76xL100xTHK0.03MM - a
X S0-201-040-000 POLY BAG L175 x W60 x 0.03mm a
X 8C-RCF-853-010 BD PRINTED YZBSC a
X 87-056-168-010 INF-WARR SHEET-PAPER(WHITE) a
X 8C-RCF-014-010 LBL SPEC YZ a
All components used on this model at the production line are shown in this service manual.
However, please note that not all components will be available as spare parts for after-sales service.
Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
– 14 –
Page 15
9301944 0251431
2-11, IKENOHATA 1-CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111
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