SERVICE MANUAL
DA
TA
RADIO RECEIVER
FR-C250
S/M Code No. 09-027-456-1N2
YZ(S)
-2-
SPECIFICATIONS -1/1
Frequency range
FM: 87.5 108 MHz
AM: 530 1,605 kHz
Maximum output
350 mW (EIAJ 4 ohms)
Speaker
Diameter 66 mm, 4 ohms
Power source
DC 4.5 V using three R6 (size AA) batteries
Maximum dimensions
157 (W) x 80 (H) x 37.9 (D) mm
(excluding projecting parts and controls)
Weight
Approx. 240 g (excluding batteries)
· The specifications and external appearance of this unit are subject to change without notice.
!
= ! SAFTY PARTS
C
= Components marked
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.
UNIT-NAME
! C REF-NO PARTS-NO
PARTS-NAME
SUFFIX&MODEL
-3-
ACCESSORIES PARTS LIST -1/1
FR-C250
YZSC
O AS1001
8C-RTF-905-010 INSTRUCTION BOOK
a
O AS1001
8C-RTF-906-010 INSTRUCTION BOOK
a
O AS1001
8C-RTF-907-010 INSTRUCTION BOOK
a
!
= ! SAFTY PARTS
C
= Components marked
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.
UNIT-NAME
! C REF-NO PARTS-NO
PARTS-NAME
SUFFIX&MODEL
-4-
ELECTRICAL PARTS LIST -1/1
FR-C250
YZSC
MAIN
X C
0001 SC-C30-0CH-J40 CAP,30PF
a
MAIN
X C
0002 SC-C39-0CH-J40 CAP,CER 39PF
a
MAIN
X C
0003 SC-C30-0CH-J40 CAP,30PF
a
MAIN
X C
0004 SC-C02-0CH-J40 CAP,CER 2PF
a
MAIN
X C
0005 SC-C02-0CH-J40 CAP,CER 2PF
a
MAIN
X C
0006 SC-C13-1RH-J40 CAP,130PF
a
MAIN
X C
0007 SC-C12-0CH-J40 CAP,12PF
a
MAIN
O C
0008 87-010-070-080 CAP,E 0.47-50
a
MAIN
X C
0009 SC-C20-3YR-K50 CAP,0.02UF
a
MAIN
O C
0010 87-A10-224-040 CAP,E 10-10
a
MAIN
X C
0011 SC-C10-3YR-K50 C-CAP,0.01UF YR/SR
a
MAIN
X C
0012 SC-C02-0CH-J40 CAP,CER 2PF
a
MAIN
X C
0013 SC-C20-3YR-K50 CAP,0.02UF
a
MAIN
O C
0015 87-010-067-080 CAP,E 1-50
a
MAIN
O C
0016 87-010-070-080 CAP,E 0.47-50
a
MAIN
X C
0017 SC-C10-4YR-K50 CAP,0.1UF
a
MAIN
X C
0018 SC-C33-3YR-K50 CAP,0.033UF
a
MAIN
O C
0019 87-A10-224-040 CAP,E 10-10
a
MAIN
O C
0020 87-010-248-080 CAP,E 220-10
a
MAIN
X C
0021 SC-C10-4YR-K50 CAP,0.1UF
a
FR-C250
YZSC
MAIN
X C
0022 SC-C10-4YR-K50 CAP,0.1UF
a
MAIN
O C
0023 87-010-248-080 CAP,E 220-10
a
MAIN
O C
0027 87-A10-224-040 CAP,E 10-10
a
MAIN
O CF 0001 S3-33A-008-A00 AM C/FILTER BFU450B14
a
MAIN
O CF 0002 S3-23A-015-A00 FM CERAMIC FILTER,LT10,7MA5-A
a
MAIN
S D
0001 87-A40-246-080 DIODE,1N4148
a
MAIN
S D
0002 87-A40-246-080 DIODE,1N4148
a
MAIN
S IC 0001 S1-86A-018-A00 IC,CXA1619BM
a
MAIN
O L
0001 S2-11A-092-A00 SPRING COIL,4.5
a
MAIN
O L
0002 S2-11A-093-A00 SPRING COIL,4
a
MAIN
O L
0003 S2-11A-094-A00 SPRING COIL,3
a
MAIN
O L
0004 S2-14A-038-A00 CHOKE COIL
a
MAIN
O L
0005 S2-10A-075-A00 AM ANT COIL,(W/CORE) 85
a
MAIN
O LED0001 S1-76A-008-A00 LED,3mm RED 3R4PD-4
a
MAIN
O PVC0001 S2-61A-040-A00 PVC,A/F 2FXG-L8R11-8031/ST205
a
MAIN
O R
0001 88-130-100-080 RES,10-1/4W
a
MAIN
X R
0004 88-130-122-080 RES,1.2K-1/4W
a
MAIN
X R
0005 88-130-102-080 RES,1K-1/4W
a
MAIN
X R
0006 88-130-104-080 RES,100K-1/4W
a
MAIN
X R
0007 88-130-220-080 RES,22-1/4W
a
FR-C250
YZSC
MAIN
X R
0008 88-130-153-080 RES,15K-1/4W
a
MAIN
X R
0009 88-130-563-080 RES,56K-1/4W
a
MAIN
O R
0010 88-130-471-080 RES,470-1/4W
a
MAIN
X R
0011 88-130-103-080 RES,10K-1/4W
a
MAIN
O SW 0001 S2-83A-016-A00 SW,SLIDE SK43D03-RG 4C-3P 4MM
a
MAIN
O T
0001 S2-22A-034-A00 IFT 7mm AM IFT,YELLOW(FM
RF)
a
MAIN
O T
0002 S2-20A-030-A00 IFT 7mm FM IFT,PINK(FM
OSC)
a
MAIN
O T
0003 S2-24A-037-A00 IFT 7mm AM OSC,RED(AM
OSC) 8
a
PHONE
O J
0001 S3-03A-022-A00 EARPHONE JACK,ST-202B
a
PHONE
X R
0012 88-130-220-080 RES,22-1/4W
a
POWER SW
O SW 0002 S2-83A-015-A00 SW,SLIDE SK22F03-RG 2C-2P 4MM
a
VOLUME
O VR 0001 S2-55A-034-A00 VOLUME,F-12NP B50K
a
-5-
SCHEMATIC DIAGRAM -1/1 (MAIN SECTION)
MAIN C.B
VOLUME C.B
PHONE C.B
POWER SW C.B
VOLUME
VR1
50k
BATTERY R6 X 3
(SIZE AA X 3) DC4.5V
J1
SP1
(SPEAKER)
PVC1
PVC1
TUNING
SW1
BAND
FM
AM
LED1
3R4PD-4
TUNING IND.
FM ANT.
TC4
VC1D
VC1A
VC1B
VC1C
TC1
TC2
L5
AM RF
87:40
C4
22p
C5
22p
L2
FM RF
L3
FM OSC
T1
AM OSC
C6
130p
C7
12p
C12
2p
R1
10
C11
0.01u
C8
0.47u/50V
R8
15k
R7
22
C9
0.02u
C10
10u/10V
TC3
T2
C3
30p
C2
39p
C1
30p
D2
1N4148
D1
1N4148
L1
R9
56k
R6
100k
R4
1.2k
R5
1k
-1
-2
C13
0.02u
T3
CF1
455kHz
CF2
10.7MHz
C27
10u/10V
C15
1u/50V
C20
220u/10V
C23
220u/10V
C18
0.033u
C20
220u/10V
C21
0.1u
C17
0.1u
C22
0.1u
C16
4.7u/50V
R10
470
R111
10k
L4
15u
R12
22
IC1
CXA1619BM
L5,TC4
AM TRACKING ADJ.
L2,TC1
FM TRACKING ADJ.
L3,TC2
FM FREQ.RANGE ADJ.
T1,TC3
AM FREQ.RANGE ADJ.
T3
AM IF ADJ.
T2
FM IF ADJ.
SW2
POWER
ON
OFF
ONE VOLTAGE:FM OR AM MODE
TWO VOLTAGES:FM AND (AM) MODE
TP8
:FM SIGNAL
:AM SIGNAL
FM/AM
BAND
SELECT
NC
IF GND
Ripple
FILTER VCC
NC
REG OUT
TUNING METER
FM IF
FM
DISCRIMINATOR
FM FE
AF POWER AMP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AM IF DET AGC
AM FE
0
0
0
00
0
0
0
4.1
4.5
2.3
2.3
1.3
1.3
1.3
1.3
1.3
3.7
(4.1)
0
(0.7)
1.2
(1.4)
4.1
(4.5)
1.4
(1.5)
1.2
(1.1)
1.1
(1.0)
0.4
(0)
1.4
(0)
1.4
(0)
0.9
(0.2)