AIWA FR-A270U
Manual de Servicio

SCHEMATIC DIAGRAM-2/2 (A270 MODEL)
ANT1 FM-ANT L5,TC1 AM TRACKING ADJ L2,TC2 FM TRACKING ADJ L3,TC3 FM FREQUENCY RANGE ADJ TC3 L6,TC4 AM FREQUENCY RANGE ADJ TC4 T2 FM IF ADJ

MAIN C.B
LED,DISPLAY 0.9 INCH 12H GREEN (UHC MODEL)

TC1

TC2

0.1 1K 1015GR
PVC1 TUN-CAP,20P-160P-82P (UHC MODEL) TUN-CAP,20P-126P-126P (EZLC,EZHC MODEL) C7 27P (UHC MODEL) 30P (EZLC,EZHC MODEL)

IFT VOL REG
VOLUME
VR,RTRY 50K-BF-12NPD

0.01 BAND 68

8.2K 39K

SPEAKER

FM/AM FE FM NC IF GND RF IN OUT FM/AM AM BAND IF SELECT IN FM IF IN

AM IN

FM RF

REG FM AFC AM VOL OUT OSC OSC

NF

FH GND DISCRI

U2
IF AFC AFC DET NC METER GND AGC AGC OUT

AM FM IF POWER IC
AF RIPPLE AF IN FILTER VCC OUT GND

T3 AM IF ADJ

U1 LM8560

0.1
2SC1815GR

8 ohm 0.5w 1/4

0.1 0.022 0.01 IF AMP LED1 ALARM LED,DIA3 DISPLAY CONTROL
STANDBY

0.022

POWER
CN1

0.1

16V

SOCKET DC 9V 2P BATTERY

COLON OUT MIN AF MIN CD MIN BG 10MIN MIN 10MIN CD 10MIN BG 10MIN AF HRAF HRCD HRBG

VSS ALARM OUT SLEEP OUT ALARM OFF ALARM DISP VDD MIN SET HOUR SET

0.1 AC~
BUZZER

0.01 0.01 ALARM SET

PT

120V 60Hz (UHC MODEL) 230V 50Hz (EZLC,EZHC MODEL)

0.1

0.01

LED,DISPLAY 0.9 INCH 24H GREEN (EZLC,EZHC,UWCC MODEL)

STANDBY

0.01 AC~
PT,U 120V W/AC CORD (UHC MODEL) PT,EZ 230V W/AC CORD (EZLC, EZHC MODEL)
BUZZER

SNOOZE INPUT 50/60 INPUT

50/60Hz JW 12/24H

10HRC 50/60 SELECT PM 10HRB CR INPUT

UP

DOWN

SLEEP INPUT

Note
CLOCK SET 0.0068

AM 12/24 10HRAG SELECT

JW

JW
SELECT

JW

50Hz 60Hz 12H 24H

12/24H 50/60Hz � JW � No Mount No Mount � JW �

0.001

SIGNAL : AM : FM

-10-