aiwa FR-A250 AM and FM Clock Radio Instruction Manual
- June 13, 2024
- Aiwa
Table of Contents
FR-A250 AM and FM Clock Radio
Product Information:
Product: FR-A250 UB,LHB
Model: RADIO RECEIVER
Model Code: 88RC6-0137(S)
Power Source: AC 120 V, 60 Hz
Output Power Consumption: 280 mW (EIAJ)
Speaker: 57 mm, 8 ohms
Frequency Range: FM – 87.5 to 108 MHz, AM – 530 to 1,710 kHz
Antennas: FM wire antenna, Ferrite bar antenna for AM
Dimensions: 124 x 126 x 160 mm (5 x 5 x 63/8 in.)
Weight: Approx. 708 g (1.56 lbs.)
Product Usage Instructions:
-
Connect the product to an AC power source of 120 V, 60 Hz.
-
Position the product in a suitable location with sufficient
space for ventilation. -
Extend the FM wire antenna and position it for optimal
reception. -
Adjust the ferrite bar antenna for AM reception.
-
Turn on the product using the power button.
-
Use the frequency selector to choose between FM and AM
modes. -
Use the tuning knob or buttons to select the desired radio
station. -
Adjust the volume using the volume control knob or
buttons. -
To improve reception, you can extend the FM wire antenna or
reposition the product. -
To turn off the product, press the power button again.
FR-A250 UB,LHB
SERVICE MANUAL
RADIO RECEIVER
MODEL CODE : 88RC6-0137(S)
This Service Manual is the “Revision Publishing” and replaces “Simple Manual” FR-A250<UB,LHB>(S/M Code No.09-992-324-1T1).
S/M Code No. 09-992-324-1R1
REVISDIAOTAN
SPECIFICATIONS
Power source Power source
AC 120 V, 60 Hz AC 110 – 120 V / 220 – 240 V
50 / 60 Hz ,selectable
Output Power consumption
280 mW (EIAJ) 4 W
Speaker
57 mm, 8 ohms
Frequency range FM : 87.5 – 108 MHz AM : 530 – 1,710 kHz
Frequency range
Antennas
AM : 530 – 1,605 kHz FM wire antenna
Ferrite bar antenna for AM
Dimensions (W x H x D) 124 x 126 x 160 mm
(5 x 5 x 63/8 in.)
Weight
Approx. 708 g (1.56 lbs.)
· Design and specifications are subject to change without notice
ELECTRICAL MAIN PARTS LIST
REF. NO IC
PART NO. KANRI NO.
DESCRIPTION
S2-516-191-000 IC,CXA1619AS(RF+1F+AUDIO) 87-A21-201-010 IC,LM8560(CLOCK)
TRANSISTOR S1-71H-003-E00
TR,A1267-Y
DIODE
82-135-799-080 DIODE,1N4148 S1-722-400-100 DIODE,1N4001
MAIN C.B
BA51 S6-45A-011-A00
CF1
S3-33A-008-A00
CF2
S3-32A-012-A00
L1
S2-10A-063-A00
L1
S2-10A-062-A00
L4
S2-24A-032-A00
L5
S2-14A-034-A00
L53
S2-15A-030-A00
L54
S2-15A-030-A00
LD51 S2-00A-008-A00
BATT SNAP TERMI AM C/FILTER SFU450B FM C/FILTER SFE10.7 AM ANT COIL
AM OSC COIL 7-7-2 A106 CHOKE COIL 47UH TYPE 4-6 LOADING COIL 4.5P LOADING COIL
4.5P LED DISPLAY FTTL-655 SGAN-RG
REF. NO
PVC1 PVC1 SP1 SW1 SW51
PART NO. KANRI NO.
DESCRIPTION
S2-61A-030-A00 S2-61A-031-A00 S3-23A-025-A00 S2-81A-055-A00 S2-81A-056-A00
PVC ST-505 60P/82P 20PX2 PVC(FRA250EZ)
SW52 S2-83A-007-A00 SLIDE SW 1C-2P(FREQ.SEL)
SW57 SW58 ! SW59 T1 T2
! TF51 ! TF51
VR1
S6-42A-065-A00 S6-42A-065-A00 S2-83A-003-A00 S2-20A-025-A00 S2-22A-028-A00
S4-05A-026-A00 S4-10A-022-A00 S2-56A-015-A00
TACT SW TS114-16 TACT SW TS114-16 SLID SW 1C-2P(VOL.SEL)
POWER TRANS(FRA250LH)
CHIP RESISTOR PART CODE
Chip Resistor Part Coding
88
A
Resistor Code
Chip resistor
Wattage 1/16W 1/16W 1/10W 1/8W
Type 1005 1608 2125 3216
Tolerance 5% 5% 5% 5%
Figure Value of resistor
Symbol CJ CJ CJ CJ
Dimensions (mm)
Form
LW
: A t Resistor Code : A
1.0 0.5 0.35
104
L
t 1.6 0.8 0.45
108
W
2 1.25 0.45
118
3.2 1.6 0.55
128
SCHEMATIC DIAGRAM _ 1 MAIN C.B
SCHEMATIC DIAGRAM _ 1
WIRING – 1 MAIN C.B
C22 PVC1
SW52:LH ONLY
WIRING – 2
MAIN C.B
IC BLOCK DIAGRAM IC,LM8560
IC,CXA1619S
TRANSISTOR ILLUSTRATION B C E A1267Y
ELECTRICAL ADJUSTMENT
ELECTRICAL ADJUSTMENT
1. AM IF Adjustment Setting : · Test point : TP1, 2(IN), TP8, 9(OUT) T2 . . .
. . . . . . . . . . . . . . . . . . 450 kHz
2. FM IF Adjustment Setting : · Test point : TP2, 3(IN), TP8, 9(OUT) IT1 . .
. . . . . . . . . . . . . . . . . . 10.7 MHz
3. AM FREQ, RANGE Adjustment Setting : · Test point : L1(IN), TP6, 7, 8,
9(OUT) L4 . . . . . . . . . . . . . . . . . . . . . 515 kHz TC4 . . . . .
. . . . . . . . . . 1750 kHz TC4
4. AM Tracking Adjustment Setting : · Test point : L1(IN), TP6, 7(OUT) L1 . .
. . . . . . . . . . . . . . . . . . . 600 kHz TC1 . . . . . . . . . . . .
. . . 1500 kHz TC1
5. FM FREQ, RANGE Adjustment Setting : · Test point : TP4, 5(IN), TP6, 7, 8,
9(OUT) L3 . . . . . . . . . . . . . . . . . . . . 87.0 MHz TC3 . . . . . . . .
. . . . . . . . . . . 109 MHz
6. FM Tracking Adjustment Setting : · Test point : TP4, 5(IN), TP6, 7(OUT)
TC2 . . . . . . . . . . . . . . . . . . . 106 MHz
PRACTICAL SERVICE FIGURE
Sensitivity
Less than 50 dB (600 kHz)
(S/N 10dB)
Less than 46 dB (1000/1400 kHz)
S/N (Input 60dB)
Less than 21 dB (600 kHz)
Less than 24 dB (1000/1400kHz)
Distortion
Less than 3 % (1000 kHz)
Distortion
Less than 5 % (1000 kHz)
Intermediate frequency 450kHz
MECHANICAL EXPLODED VIEW – 1/1
SPEAKER
SPEC LABEL
SCREW
14
SCREW
VOLTAGE SELECTOR SW
PVC PLATE
POWER CORD
ADAPOR
POWER CORD
SCREW
MECHANICAL PARTS LIST 1/1
REF. NO
PART NO. KANRI NO.
DESCRIPTION
1 S6-73A-032-A00 2 S6-74A-043-A00 2 S6-74A-042-A00 3 S6-87A-077-A00 3 S6-87A-075-A00
CAB,TOP(FRA250) CAB,BOTTOM(FRA250LH)
4 S6-97A-011-A00 5 S6-12A-050-A00 6 S7-08A-045-A00 7 S7-08A-055-A00 8 S7-01A-021-A00
COVER BATTERY(FRA250) BRACKET LED(FRA250) TUNING KNOB(D-GRY) VOLUME KNOB DIAL POINTER(FRA250)
9 S7-08A-065-A00 10 S7-08A-075-A00 11 S7-08A-051-A00 12 S7-08A-085-A00 13 S6-12A-041-A00
POWER KNOB BAND KNOB BUTTON CLOCK(FRA250) BUTTON SNOOZE(FRA250) HOLDR,ANT(FRA250)
14 S6-35A-010-A00 RUBBER FOOT(BLK)
Basic color symbol B G N S V
Color Black Green Gold Silver Violet
COLOR NAME TABLE
Basic color symbol
Color
C
Cream
H
Gray
P
Pink
ST
Titan Silver
W
White
Basic color symbol D L R T Y
Color Orange
Blue Red Brown Yellow
ACCESSORIES LIST
REF. NO
PART NO. KANRI NO.
DESCRIPTION
1 S8-00A-263-A00
1 S8-00A-259-A00 ! 2 S9-50A-001-A00
INSTRUCTION BOOK(FRA250LH)
931196
211, IKENOHATA 1CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111
Printed in Singapore
References
Read User Manual Online (PDF format)
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