Sony ICF C212 Service Manual

ICF-C212

SERVICE MANUAL

Ver 1.0 2003.03

SPECIFICATIONS

Time display:

North and South America, Australia:12-hour system Other countries/regions: 24-hour system

Frequency range:

FM 87,5 - 108 MHz

E Model

Australian Model

Dimensions:

Approx. 165 x 64.5 x 146 mm (w/h/d) (6 1⁄2 x 2 5⁄8 x 5 3⁄4 inches) incl. projecting parts and controls

Mass:

Approx. 522 g (1 lb 3 oz.) not incl. battery

Speaker:

Approx. 6.6 cm (2 5⁄8 inches) dia., 8Ω

Power output:

150 mW (at 10 % harmonic distortion)

Power requirements:

230 V AC, 50 Hz For the power back-up function: 9 V DC, one 6F22 battery

Battery life:

Approx. 80 hours, using Sony 006P (6F22) battery

AM 530 - 1 710 kHz

Design and specifications are subject to change without notice.

9-877-143-01

2003C0200-1

FM/AM CLOCK RADIO

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

ICF-C212

TABLE OF CONTENTS

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

1. GENERAL

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

2. DISASSEMBLY

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

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

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

Pointer Installation ............................................................. 6

3. ELECTRICAL ADJUSTMENTS ............................. 7

4. DIAGRAMS

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

4-2. Schematic Diagram ................................................... 10

5. EXPLODED VIEW ..................................................... 12

6. ELECTRICAL PARTS LIST ................................... 13

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON 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

CF2

mark

CF3

Mark

no mark

blue

orange

black

white

Center

frequency

10.70MHz

10.67MHz

10.73MHz

10.64MHz

10.76MHz

LOCATION AND FUNCTION OF CONTROLS

Function selector

SECTION 1

GENERAL

ICF-C212

This section is extracted from instruction manual.

AC power cord

ALARM

RADIOB UZZE R

FM wire antenna

There is a tactile dot beside VOL to show the direction to turn up the volume.

ICF-C212

Setting the Clock

1 Plug in the unit.

The display will flash “AM 12:00” or “0:00”.

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.

• The clock system varies depending on the model you own. 12-hour system: “AM 12:00” = midnight 24-hour system: “0:00” = midnight

• 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, set the time one minute

behind the time you want to set. Press TIME SET M simultaneouly with the time signal.

Operating 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.

Improving the Radio Reception

FM: Extend the FM wire antenna fully to improve reception. AM: Rotate the unit horizontally 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 to 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 setting will be indicated in the display. The alarm will come on at the preset time 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 deactivate the alarm, set the function selector to OFF.

The alarm indicator will be turned 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. (While the snooze function is operating, the alarm indication is shown in the display until the alarm function is deactivated.) You can use this function 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.

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.

DISASSEMBLY

The equipment can be removed using the following procedure.

SECTION 2

ICF-C212

Set

Cabinet (upper)

Main board

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

2-1. CABINET (UPPER)

Claw

Panel

Cabinet (upper)

Claw

Cabinet (lower)

2-2. MAIN BOARD

Main board

Snap, battery

Five screws +P 3x1

Cabinet (lower)

Claws

+ 11 hidden pages