Read Sony ICF-F11S / ICF-F12S Service Manual online
ICF-F11S/F12S
2
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to fl ow)
Unleaded solder is more viscou-s (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
HOW TO CHANGED THE CERAMIC FILTERS
This model is used two ceramic fi lters of CF1 and CF3.
You must used same type of color marked ceramic fi lters in order
to meet same specifi cations.
Therefore, the ceramic fi lter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.
This model is used two ceramic fi lters of CF1 and CF3.
You must used same type of color marked ceramic fi lters in order
to meet same specifi cations.
Therefore, the ceramic fi lter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.
Mark
Center frequency
red
10.70 MHz
blue
10.67 MHz
orange
10.73 MHz
black
10.64 MHz
white
10.76 MHz
CF3
mark
CF1
A
B
Telescopic antenna
Antena telescópica
Antena telescópica
FM
MW
SW
R20 (size D)
× 2
R20 (tamaño D)
× 2
Insert the
E side of the battery first.
Inserte primero el lado
E de la pila.
Rear
Parte posterior
Parte posterior
Installing the
batteries
batteries
(See fig.
A)
1
Open the battery compartment lid.
2
Install two R20 (size D) batteries (not
supplied) with correct polarity.
supplied) with correct polarity.
3
Close the lid.
Battery life (Approx. hours)
(JEITA*)
When using
FM
SW
MW
Sony R20 (size D)
200
220
220
* Measured by JEITA (Japan Electronics and
Information Technology Industries Association)
Standards. The actual battery life may vary
depending on the circumstance of the unit.
Standards. The actual battery life may vary
depending on the circumstance of the unit.
When to replace the batteries
When the sound becomes weak or distorted, replace
all the batteries with new ones.
When the sound becomes weak or distorted, replace
all the batteries with new ones.
Notes on batteries
• Do not charge the dry batteries.
• Do not carry the dry batteries with coins or other
• Do not charge the dry batteries.
• Do not carry the dry batteries with coins or other
metallic objects. It can generate heat if the positive
and negative terminals of the batteries are
accidentally contacted by a metallic object.
and negative terminals of the batteries are
accidentally contacted by a metallic object.
• Do not use different types of batteries at the same
time.
• When you replace the batteries, replace all with new
ones.
• When you are not going to use the unit for a long
time, remove the batteries to avoid damage from
battery leakage and corrosion.
battery leakage and corrosion.
Improving the
reception
reception
(See fig.
B)
FM: Extend the telescopic antenna and adjust the
angle for optimum reception.
MW: Rotate the unit horizontally for optimum
reception. A ferrite bar antenna is built into the
unit.
unit.
SW: Extend the telescopic antenna vertically.
Note
Adjust the direction of the
antenna by holding the bottom of
it. The antenna can be damaged
when you move the antenna with
excessive force.
Adjust the direction of the
antenna by holding the bottom of
it. The antenna can be damaged
when you move the antenna with
excessive force.
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
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