Sony Icf-c211 - am/fm clock radio User manual

ICF-C211/C211L

SERVICE MANUAL

ICF-C211

FM/AM CLOCK RADIO

ICF-C211L

FM/LW CLOCK RADIO

SPECIFICATIONS

UK Model

E Model

Australian Model

ICF-C211

AEP Model

ICF-C211/C211L

Time display: 12 hour (Central & South America, Australian, UK model)

24 hour (AEP, Italian, East European & Russian, Argentina,

Singapore model)

Frequency range

FM: 87.5 – 108 MHz

AM: 530 – 1,710 kHz (ICF-C211:Central & South America model)

AM: 531 – 1,602 kHz (ICF-C211: AEP, UK, East European &

Russian, Argentina, Australian, Singapore model)

AM: 526.5 – 1,606.5 kHz (ICF-C211:Italian model)

LW: 153 – 255 kHz (ICF-C211L)

Speaker: Approx. 6.6 cm (2 5/8 inches) dia., 8 ohm

Power output: 150 mW (at 10 % harmonic distortion)

Power requirements:

Central & South America model

120 V AC, 60 Hz

AEP, UK, Italian, East European & Russian, Argentina, Australian,

Singapore model

220 - 230 V AC, 50 Hz

For the power back-up function: 9 V DC, one 6F22 battery

Battery life: Approx. 80 hours, using Sony S-006P(U) battery

Dimensions: Approx. 170 x 65 x 149.5 mm (w/h/d)

(6 3⁄4 x 2 5⁄8 x 6 inches) incl. projecting parts and controls

Mass:

EXCEPT UK model:Approx. 520 g (1 lb 3 oz) not incl. battery

UK model:Approx. 570 g (1 lb 4 oz) not incl. battery

Design and specifications are subject to change without notice.

Photo : ICF-C211

9-927-903-12

2001C0200-1

Sony Corporation

Audio Entertainment Group

General Engineering Dept.

Ver 1.2 2001. 03

With SUPPLEMENT-1

(9-927-903-81)

With SUPPLEMENT-2

(9-927-903-82)

– 2 –

TABLE OF CONTENTS

Specifications ........................................................................... 1

1. GENERAL

Location and Function of Controls .................................... 3

2. DISASSEMBLY

2-1. Cabinet (Upper) .......................................................... 5

2-2. Transformer Board ...................................................... 5

2-3. Main Board ................................................................. 5

Installation Power Cord ..................................................... 6

3. ELECTRICAL ADJUSTMENT ................................ 7

4. DIAGRAMS

4-1. Printed Wiring Boards ................................................ 9

4-2. Schematic Diagram .................................................... 11

5. EXPLODED VIEW ..................................................... 15

6. ELECTRICAL PARTS LIST ................................... 17

MODEL NO.

MODEL IDENTIFICATION

–Model Number Portion –

Carved on lower cabinet

ICF-C211

ICF-C211L

Central & South America model :

AC : 120V -60Hz 5W

AEP, UK, Italian, East European & Russian, Argentina,

Australian, Singapore model : AC : 220 –230V-50Hz 5W

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE WITH

MARK 0ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

LIST ARE CRITICAL TO SAFE OPERATION.

REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE

PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN

SUPPLEMENTS PUBLISHED BY SONY.

• HOW TO CHANGE THE CERAMIC FILTER

This model is used two ceramic filters of CF2 and CF3.

You must use same type of color marked ceramic filters in

order to meet same specifications.

Therefore, the ceramic filter must change two pieces together

since it's supply two pieces in package as a spare parts.

mark mark

CF3

CF2

no mark

blue

orange

black

white

10.70MHz

10.67MHz

10.73MHz

10.64MHz

10.76MHz

Mark Center

frequency

– 3 –

SECTION 1

GENERAL

LOCATION AND FUNCTION OF CONTROLS

This section is extracted from

instruction manual.

BAND

C211

TUNING VOL

FMLW

C211L

Function selector

AC power cord

FM wire antenna

–4 –

Setting the Clock

1. Plug in the unit.

The display will flash “AM 12:00”.

2. To set the hour, while holding down CLOCK, press TIME

SET H. When the correct hour appears in the display, release

CLOCK.

3. To set the minute, while holding down CLOCK, press TIME

SET M. When the correct minute appears in the display,

release CLOCK. The clock will begin to operate when you

release TIME SET M.

• Each press on TIME SET H or TIME SET M advances the

displayed number by one.

• The minute digits advance to “00” after “59”. The hour digits

do not advance by pressing TIME SET M.

• To adjust the time exactly to the second, release TIME SET M

simultaneously with the time signal.

Playing the Radio

1. Set the Function selector to RADIO ON to turn on the radio

and adjust VOL. (volume)

2. Select BAND and tune in a station using TUNING.

• To turn off the radio, set the Function selector to OFF.

• To improve radio reception

FM: Extend the FM wire antenna fully to improve reception.

AM: Reorient the unit for optimum reception.

A ferrite bar antenna is built into the unit.

Do not operate the unit over a steel desk or metal surface, as

this may lead to interference of reception.

Setting the Alarm

To set the radio alarm, first tune in a station and adjust the

volume.

1. To set the hour for alarm, while holding down ALARM,

press TIME SET H. When the desired hour appears in the

display, release ALARM.

2. To set the minute for alarm, while holding down ALARM,

press TIME SET M. When the desired minute appears in the

display, release ALARM.

3. Set the Function selector to ALARM MODE RADIO or

ALARM MODE BUZZER.

The alarm will come on at the presettime and automatically

turn itself off after 119 minutes.

• To shut off the alarm, set the Function selector to OFF.

To sound the alarm at the preset time the next day, set the

Function selector to ALARM MODE RADIO or ALARM

MODE BUZZER again.

• To cancel either alarm, set the Function selector to OFF.

• To doze a few more minutes, press SNOOZE/SLEEP OFF.

The alarm will shut off, but will come on again after about 9

minutes. You can repeat this process as many times as you like.

• To adjust the radio alarm volume, turn VOL. The buzzer

volume is fixed.

• To check the preset time, press ALARM.

Setting the Sleep Timer

Enjoy falling asleep to the radio using the built-in sleep timer that

shuts off the radio automatically at a preset time.

1. While listening to the radio, set the Function selector to OFF.

2. Press SLEEP.

The radio turns on. It will go off after 59 minutes.

• To turn off the radio before the preset time, press SNOOZE/

SLEEP OFF.

• Every time you press SLEEP, the sleep timer is reset to 59

minutes.

• When you set the Function selector to ALARM MODE

RADIO or ALARM MODE BUZZER, if the preset alarm time

comes while the sleep timer is operating, the radio or buzzer

sounds depending on which you set.

– 5 –

SECTION 2

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order given.

2-1. CABINET (UPPER)

2-2. TRANSFORMER BOARD

rThe equipment can be removed using the following procedure.

Cabinet (upper)

Transformer board

Set

Main board

1Screws +P 3x14

3Claw

2Claw

3Claw 5Claw

Cabinet (upper)

Cabinet (lower

)

Panel

1Remove solder

Transformer board

Cabinet (lower

)

Red

1Claws

Main board

Snap, battery

Cabinet (lower

)

2-3. MAIN BOARD

– 6 –

INSTALLATION POWER CORD

NOTE FOR INSTALLATION (KNOB (VOL), KNOB (TUNE))

2Turn RV1 fully in the

arrow direction.

1Turn the shaft of CV1

fully in the arrow direction.

5Turn the knob (VOL)

fully in the arrow direction

Ato be the warking

between arrows Aand B.

3Pointer

4Knob (tune)

Main board

Cabinet (lower)

Marking

CV1

RV1

Knob (VOL)

Cabinet (lower

)

Power cord

– 7 – – 8 –

SECTION 3

ELECTRICAL ADJUSTMENTS

TUNER SECTION

AM/LW Section

Procedure :

BAND : AM (C211)

LW (C211L)

VOLUME : MIN

FM Section

Procedure :

BAND : FM

VOLUME : MIN

AM RF signal

generator

30% amplitude modulation by 400Hz

signal.

Output level : as low as possible

Put the lead-wire

antenna close to

the set.

FM RF signal

generator

22.5kHz frequency deviation by

400Hz signal.

Output level : as low as possible

antenna

terminal

(JW1)

0.01µF

set

32 Ω

speaker terminal

level mete

• Repeat the procedures in each adjustment several times, and the

frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

< > : Italian model

AM IF ADJUSTMENT