Sony Dream machine icf-c160 User manual

MICROFILM

ICF-C160

FM/AM CLOCK RADIO

SPECIFICATIONS FEATURES

SERVICE MANUAL

US Model

Canadian Model

AEP Model

E Model

Australian Model

Frequency range

FM: 87.5–108 MHz

AM: 526.5–1606.5kHz (Italian)

530–1605 kHz (EXCEPT Italian)

Speaker

Approx. 6.6 cm (25/8inches) dia. 8 ohms

Power output

120 mW (at 10% harmonic distortion)

Power requirements

120 V AC, 60 Hz

For power backup: 9 V DC, one 6F22 battery

Battery life

Approx. 35 hours using the Sony S-006 P (U)

battery

Dimensions

Approx. 120 124 132 mm (w/h/d)

(43/4×5 ×51/4inches) incl. projecting parts

and controls

Mass

Approx. 660 g (1 Ib 7.2 oz) not incl. battery

Design and specifications are subject to change

without notice.

• Dual alarm

• Date display

• Full power backup function to keep the clock, the

alarm (radio and buzzer) and the radio operation

during a power interruption with a 6F22 battery

(not supplied) installed.

– 2 –

Mark 1 Mark 2 Center

frequency

red — 10.70MHz

blue — 10.67MHz

orange — 10.73MHz

black — 10.64MHz

white — 10.76MHz

white white 10.75 MHz

yellow — 10.79 MHz

HOW TO CHANGE THE FM CERAMIC FILTERS

This model is used two ceramic filters of CF1 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 one package as a spare parts.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !

SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE

DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ

DE FONCTIONNEMENT. NE REMPLACER CES COM-

POSANTS QUE PAR DES PIÈCES SONY DONT LES

NUMÉROS SONT DONNÉS DANS CE MANUEL OU

DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the fol-

lowing safety check before releasing the set to the customer:

Check the antenna terminals, metal trim, “metallized” knobs,

screws, and all other exposed metal parts for AC leakage. Check

leakage as described below.

LEAKAGE TEST

TheAC leakage from any exposed metal part to earth ground and

from all exposed metal parts to any exposed metal part having a

return to chassis, must not exceed 0.5 mA (500 microampers).

Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’instructions to use these

instruments.

2. A battery-operatedAC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indica-

tion is 0.75 V, so analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-

amples of a passive VOM that is suitable. Nearly all battery

operated digital multimeters that have a 2 V AC range are

suitable. (See Fig. A)

CF1

mark 2

CF3

mark 2

mark 1

Fig. A. Using an AC voltmeter to check AC leakage.

1.5 k

Ω

0.15

FAC

voltmete

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK !OR DOTTED

LINE WITH MARK !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 PUB-

LISHED BY SONY.

Note on chip component replacement

•Never reuse a disconnected chip component.

•Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

CORD DRESSING

(POWER, ANTENNA)

1) Connect the power cord and antenna cord as shown in the

figure.

2) Mount the cord stopper with screws (P3 ×10).

Note:Tighten completely the screws (P3 ×10).

SECTION 1

SERVICING NOTE

chassis

antenna cord

power cord

screw

(P3

10)

cord stopper

– 3 –

SECTION 2

GENERAL This section is extracted from

instruction manual.

– 4 –

FRONT PANEL ASS’Y

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

SECTION 3

DISASSEMBLY

three claws

screw

(P3

10)

cabinet (upper)

four screws

(P3

35)

three claws

battery case lid

three claws

cover

battery snap

speaker cord

cord (4 core)

two claws

radio board

chassis

MAIN BOARD, CHASSIS

front panel ass’y

cover

– 5 –

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

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

FM FREQUENCY COVERAGE ADJUSTMENT