Sony icf c 390 l service manual

Page 2

TABLE OF CONTENTS

Specifications ................................................

1 . GENERAL
Locanon and Function of Controls .................................... 3

2. DISASSEMBLY
2-]. Cabinet (Upper) Removal
2-2. Main Board Removal

Installation Power Cord
3. DIAL POINTER INSTALLATION ............................ 6
4. ELECTRICAL ADJUSTMENT ................................. 7

5. DIAGRAMS
5-1. Printed \Viring Boards

(lCF-C390/C390L : French model) .......................... 9
5-2. Schematic Diagram
(lCF-C390/C390L :French model) ............................ 11

53. Printed Wiring Boards
(ICF-C39OL :AEP, UK model)
5-4. Schematic Diagram
(ICF-C390L :AEP, UK model) ................................ 15

13

6. EXPLODED VIEW .................. ............ 17

7. ELECTRICAL PARTS LIST .................... . 19

MODEL IDENTIFICATION
- Model Number Portion -
Carved on lower cabinet

S ONY.

ICF-caso
MODEL 0- mfllCF-CSQOL

US, Canadian, Central &
South America model : AC : 120V~60Hz
AEP, UK, French, Italian, Spanish,

Russian, E13 model : AC 2 220 - 230VV50Hz
E4 model : AC : 110 - 120V/220 - 230V
N 501601-12

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A OR DOTIED LINEWITH
MARK A ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICALTO SAFE OPERATION.

REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the
following 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.

LEAKAG E TEST

The AC 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 0.5mA (500 rnicroampers).
Leakage current can be measured by any one of three methods.

I, A commercial leakage tester, such as the Simpson 229 or RCA
WT-54-OA. Follow the manufacturers' instructions to use these
instruments.

2. A battery-operated AC 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" indication is 0.75V.
so analog meters must have an accurate low-voltage scale. The
Simpson 250 and Sanwa SI-l-63Trd are examples of a passive
VOM that is suitable. Nearly all battery operated digital
multimeters that have 3. 2V AC range are suitable. (See Fig. A)

To Ex ed Metal
Parts gnosSet

'
$1.5m /

a. 15 uF l-
T_. [

- Earth Ground

voltmeter
(o. 75 V)

Fig. A. Using an AC voltmeter Ia checkAC leakage.

. HOWTO CHANGETHE 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 Center
mark frequency

mark

, / red 10.70MI-lz
'I' I orange 10.73MHz

I I I black 10.64MHz

White 10.76MHZ

A1TENTION AU couPOSANT AYANT RAPPORT
A LA sEcunn'E!

LES COMPOSANTSIDENTIFIES PAR UNE MARQUE A sun LES
DIAGRAMMES scHEMAnoUES ET LA LISTE DES PIECES SONT
CRITIQUES POUR LA SECURITE DE FONCTIONNEMENI. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIECES SONY
DONT LES NUMEROS SONT DONNES DANS CE MANUEL 0U
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

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