Sony icf 3100 service manual

Page 1

SERVICE MANUAL

US Model
AEP Model
UK Model

SPECIFICATIONS

US Model

FM: 875' 108 MHz

AM (MW): 5304.710 kHz
AEP/UK Model

FM: 87.671075 MHZ

AM (MW): 531 41,602 kHz

Frequency range

Antenna FM: Built-in loop/wire antenna
AM/LW: Built-in ferrite oar antenna
Speaker Approx. 6.6 cm (25/3 inches) dia.
8 ohms
Power output 220 mW

Power requirements
Battery life

Three R14 (size C) batteries

Approx 90 hours when the POWER switch is
set to ON

Approx. 90 days when the POWER switch is set
to STANDBY

Using Sony batteries SUMv2(NS)

High: approx. 1 rn (393/; inches)

Low: approx. 30 cm (117/5 inches)

Approx. 112 x 159 x 58 mm (w/hld)
(/2 X 53/5 X 23/8 WWW)

Approx. 500 g (1 lb 2 oz) incl. batteries

Sensor level
Dimensions
Weight

Design and specifications are subject to change without notice.

-The supersonic wave sensor detects when a person or an
object comes near by. and turns on the radio automatically.

OTUNE indicator enables precise tuning.

~The timer turns oil the radio automatically alter the radio has
been turned on by the supersonic wave sensor.

- Easy installation on the wall using the ring on the rear.

HIGH (approx. t rn)
HIGH (env, 1 mi

HIGH (Reichweite ca. 1 m)
Large (HIGH) (aprox. t rn)

LOW (approx. 30 cm)
Low (errV. so cm)
LOW (Reichweite ca. so cm)
Corta (LOW) (aprox. 30 cm)

FM/AM RECEIVER
ONY.

Page 2

lCF-31 00

SECTION 1
GENERAL

LOCATION OF CONTROLS

SERVICING NOTE

Flexible Circuit Board Repa ng

0 Keep the temperature of the soldering iron around
270°C during repairing.

0 Do not touch the soldering iron on the same con-
ductor of the circuit board (within 3 times).

0 Be careful not to apply force on the conductor
when spldering or unsolden'ng.

Notes on chip component replacement

0 Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor
may be damaged by heat.

Set the radlo iollowing steps 1 to 5 so that lhe radio ls turned on
automatically by the supersonic wave sensor.

II Set POWER to ON.

I! Select FM or AM with the BAND selector.

El Adjust volume.

I! Adjust tuning.

B Set POWER Io STANDBY.
The supersonic wave sensor will function in about 5
seconds.

® RESET button
Press to turn 0" the radio temporarily when it has
been turned on by the supersonic wave sensor. The
sensor will not lunction tor about 5 seconds after this
button is pressed.

@TUNE Indicator
Illuminates when a signal is received.

© Dial scale

© Speaker

(9 TIMER SET control
Adjust the amount ot time length (between approx. 3
to 30 minutes) that you wish the radio to stay on alter
it has been turned on by the supersonic wave sensor.
The radio will be turned oil automatically.
TiMER SET does not tunction when the radio has
been turned on by setting POWER to ON.

® Supersonic wave sensor

© Ring (rear)
Use to hook the radio on the wall.

® SENSOR LEVEL switch (inside the battery
compartment)
Switches the dlstance within which the supersonic
wave sensor detects a person or an object.
HIGH: approx. 1 m (39% inches)
LOW: approx. 30 cm (117/3 inches)

To turn all the radio temporarily after it has
been turned on by the supersonic wave sensor
Press RESET. The sensor will not iunctien (or about 5 seconds.
To turn o" the radio completely, set POWER to OFF.

To use this radlo without the supersonic wave
sensor

To turn on the radio. set POWER to ON.

To turn on lhe radio: set POWER to OFF.