Sony ICF-990L User Manual

ICF-990L
SERVICE MANUAL AEP Model
UK Model
ICF-990L is almost same as ICF-880L.
This
manual
contains
only
the
points
which
differ
from
ICF-880L
without
exploded
views.
Please
refer
to
ICF-880L
service
manual
(9-956-178-[])
for
the
information
not
contained
in this
manual.
SPECIFICATIONS
Frequency range:
FM: 87.6 ~ 107.5 MHz
MW: 531 - 1602 kHz
LW: 153 — 255 kHz
SW: 5.95 - 18 MHz
Speaker:
Approx. 10.2 cm (4 1/3 inches) dia. 8Q
Power output:
430 mW(at 10% harmonic distortion)
Output:
® jack (minijack)
Power requirements:
With the supplied ACpower cord:
220 - 230 V AC, 50 Hz
With four R6 (size AA)batteries: 6V DC
Dimensions :
Approx.258 x 133 x 65mm (W/h/d)
(10 !/4x 51/4 x 25/g inches) incl. projecting
parts and control with carrying handle
pushed in.
Mass:
Approx. 1080g (2 Ib 6 oz) incl. batteries
Supplied accessory:
AC power cord(1)
Design and specifications are subject to change
without notice.
FM/SW/MW/LW
4
BAND
RADIO
ON Y.

Sony ICF-990L Specifications

General

Type	Portable Radio
Model	ICF-990L
Tuning	Analog
Frequency Range (FM)	87.5 - 108 MHz
Frequency Range (AM)	530 - 1605 kHz
Headphone Jack	Yes
Wave bands	FM, AM
Power Source	AC or Battery

Summary

Specifications

Frequency Range

Specifies the operational frequency bands for FM, MW, LW, and SW.

Speaker and Output

Details speaker size, impedance, and audio output power.

Power Requirements

Lists power sources, including AC voltage and battery type.

Physical Specifications

Provides dimensions and weight of the radio.

Supplied Accessories

Lists included accessories like the AC power cord.

Difference Electrical Parts List

Accessories and Hardware

Lists differences in accessories and hardware compared to ICF-880L.

Section 1 General

Location of Controls

Identifies and describes the location of all controls on the unit.

Power Sources

Explains battery replacement and house current usage.

Radio Operation Guide

Guides on how to operate the radio for tuning and listening.

Preset Tuning Instructions

Instructions on how to preset and recall FM stations.

Improving Reception

Tips for optimizing FM, MW/LW, and SW reception.

Section 2 Dial Pointer Fitting

Drum and Spring Installation

Step-by-step instructions for fitting the drum and spring assembly.

Belt and Pointer Installation

Procedures for installing the belt and dial pointer components.

Section 3 Electrical Adjustment

Frequency Coverage Adjustments

Procedures for adjusting frequency coverage for FM, SW, and LW bands.

Tracking Adjustments

Steps for fine-tuning tracking for various frequency bands.

IF Adjustments

Details the adjustment procedures for Intermediate Frequency circuits.

Section 4 Diagrams

Printed Wiring Boards

Layouts of printed wiring boards for component identification.

Schematic Diagram

Detailed circuit schematic showing component interconnections.

IC Block Diagram

Functional block diagram of the main IC (CXA1019S).

Semiconductor Lead Layouts

Physical lead diagrams for various semiconductor components.

Section 5 Exploded Views

Cabinet Section

Exploded view parts list for the cabinet section of the radio.

Chassis Section

Exploded view parts list for the chassis section of the radio.

Section 6 Electrical Parts List

Capacitors, Diodes, and Resistors

Lists part numbers, values, and specifications for capacitors, diodes, and resistors.

Switches, Jumpers, and Transistors

Lists part numbers and specifications for switches, jumpers, and transistors.

More Capacitors and Filters

Continues listing capacitor, filter, and trimmer part details.

Trimmers and Diodes

Lists trimmer, diode, and variable resistor part numbers.

Transistors and Resistors List

Lists transistor and resistor part numbers and specifications.

Variable Resistors and Accessories

Lists variable resistor, accessory, and packing material part numbers.