Sony ICF-F12S User Manual

SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Audio Business Group
ICF-F11S/F12S
SPECIFICATIONS
FM/SW/MW 3 BAND RADIO
9-887-911-02
2007L05-1
©
2007.12
E Model
Ver. 1.1 2007.12
Frequency range:
Band ICF-F11S ICF-F12S
FM 87.5-108 MHz 87.5-108 MHz
MW 530-1 605 kHz 530-1 605 kHz
SW 2.3-7.35 MHz 5.9-18 MHz
Speaker
Approx. 9.2 cm (3
5
/
8
inches) dia., 4 Ω
Output
v (earphone) jack (ø3.5mm minijack)
Power output
300 mW (max)
Power requirements
3V DC, two R20 (size D) batteries
Dimensions
Approx. 216 × 129.8 × 68.6 mm (w/h/d)
(8
5
/
8
× 5
1
/
8
× 2
3
/
4
inches) incl. projecting parts and
controls
Mass
Approx. 676 g (1 lb 8 oz) incl. carrying strap and
batteries
Supplied accessories
carrying strap (1)
Design and specifications are subject to change
without notice.
Notes 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.
Photo : ICF-F12S

Sony ICF-F12S Specifications

General

Type	Portable Radio
Tuning	Analog
Tuner Bands	FM / AM
Frequency Range (FM)	87.5 - 108 MHz
Frequency Range (AM)	530 - 1710 kHz
Output Power	100 mW
Headphone Jack	3.5 mm
Power Source	2 x AA batteries (not included)
Speaker	Built-in
Antenna	Built-in telescopic antenna (FM), internal ferrite bar antenna (AM)

Summary

Specifications

Frequency Range

Details the FM, MW, and SW frequency coverage for the radio.

Performance & Physical Characteristics

Covers speaker, output, power, dimensions, and mass specifications.

Power Requirements

Lists the required DC voltage and battery type.

Supplied Accessories

Lists items included with the radio.

Notes on Chip Component Replacement

Servicing Notes

Unleaded Solder

Discusses the use and characteristics of unleaded solder.

Lead Free Mark

Explains the meaning of the lead-free mark on PCBs.

How to Change Ceramic Filters

Provides instructions for replacing ceramic filters.

General Operations

Installing the Batteries

Guides users on how to install batteries correctly.

Improving Reception

Offers tips for optimizing radio reception.

Disassembly Procedures

Disassembly Flow

Step-by-step guide outlining the sequence for unit disassembly.

Rear Cabinet Block

Instructions for removing the rear cabinet assembly.

Main Board and Gear (VC)

Procedures for accessing and handling the main board and gear mechanism.

Antenna, Battery Lid, and Rear Cabinet

Steps for removing the antenna, battery lid, and rear cabinet.

Gear (VC) and Main Board Setting

Guidance on setting and aligning the gear mechanism and main board.

Electrical Adjustments

IF Adjustments

Covers Intermediate Frequency (IF) adjustments for MW and SW bands.

Frequency Coverage Adjustments

Details calibration of MW, SW, and FM frequency coverage.

Tracking Adjustments

Explains the fine-tuning process for MW, SW, and FM band reception.

Diagrams

Printed Wiring Board - Main Board

Layout of components and traces on the main board.

IC Block Diagram - Main Board

Functional block representation of the main integrated circuit.

Schematic Diagram - Main Board

Detailed electrical schematic for the main board.

Exploded View

Electrical Parts List

Capacitors

Detailed list of all capacitor components used in the device.

Coils

Detailed list of all coil components used in the device.

Resistors

Detailed list of all resistor components used in the device.

Semiconductors

Detailed list of all semiconductor components used in the device.

Supplement-1

New/Former Discrimination

Guidance on identifying differences between original and revised main boards.

Updated Diagrams

Updated diagrams provided in the supplement for the revised main board.

Revised Printed Wiring Board - Main Board

Revised printed wiring board layout specific to the updated main board.

Revised Electrical Parts List

Revised list of electrical parts for the updated main board.

Revision History