Sony ICF-7700 User manual

PRECAUTIONS
• Operate the unit only on 6 V DC.
For battery operation, use four size AA (R6) batteries.
For AC operation, use the AC power adaptor recommended for this unit; do
not use any other type.
For car battery operation,' use the car battery cord recommended for this
unit; do not use any other type.
• Do not leave the unit in a location near heat sources, or in a place subject
to direct sunlight, excessive dust, or mechanical shock.
• Use the unit within a temperature range of 0°C to 40®C (32®F to 104®F). if
it is used in temperatures outside this range, numbers may appear on the
frequency and clock display which have nothing to do with the frequency
being received, if it is used in temperatures lower than this range, the
numbers displayed may change very slowly. These irregularities will
disappear and there will be no damage to the unit when the unit is used in
its recommended temperature range.
• Should any solid object or liquid fail into the unit, remove the batteries,
and have the unit checked by qualified personnel before operating it any
further.
• Since a strong magnet is used for the speaker, keep personal credit cards
using magnetic coding or spring-wound watches away from the unit to
prevent possible damage from the magnet.
• When the casing becomes soiled, clean it with a soft cloth dampened with
mild detergent solution. Never use abrasive cleansers or chemical solvents,
as they may mar the casing.
If you have any question or problem concerning your unit that is not covered
in this manual, please consult the nearest Sony dealer.
Sony Corporation Printed in Japan
SONY
3-990-102-23 (1)
FM/LW/MW/SW PLL SYNTHESIZED RECEIVER
ICF-7700
OPERATING INSTRUCTIONS
Before operating the unit, please read this manual thoroughly
and retain it for future reference.
OWNER'S RECORD
The model number is located at the rear and the serial
number is located in the battery compartment. Record the
serial number in the space provided below. Refer to them
whenever you call upon your Sony dealer regarding this
product.
Model No. iCF-7700
Serial No.
© 1987 by Sony Corporation

To prevent fire or shock hazard, do not expose the
unit to rain or moisture.
To avoid eiectricai shock, do not open the cabinet.
Refer servicing to quaiified personnei oniy.
INFORMATION
This equipment generates and uses radio frequency energy and if not
installed and used properly, that is, in strict accordance with the
manufacturer's instructions, may cause interference to radio and television
reception. It has been type tested and found to comply with the limits for a
Class B computing device in accordance with the specifications in Subpart J
of Part 15 of FCC Rules, which are designed to provide reasonable
protection against such interference in a residential installation. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause interference to radio or television
reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the
following measures:
Reorient the receiving antenna
Relocate the equipment with respect to the receiver
Move the equipment away from the receiver
Plug the equipment into a different outlet so that equipment and receiver
are on different branch circuits.
If necessary, the user should consult the dealer or an experienced
radio/television technician for additional suggestions. The user may find the
following booklet prepared by the Federal Communications Commission
helpful:
"How to Identify and Resolve Radio-TV interference Problems". This booklet
is available from the U.S. Govemment Printing Office, Washington, DC 20402,
Stock No. 004-000-003454.
Very weak or intenrupted sound, or unsatisfactory reception.
• Weak batteries.
• Tuning or antenna adjustment is not correct.
(See page 12.)
• Weak signal. When in a vehicle or in a building, listen near a window.
• Figures on the frequency display differ a little from the acted station
frequency. Tune more precisely. (See page 12.)
The preset station cannot be received when preset tuning.
• incorrect preset station button is pressed.
• The preset station is erased. Preset the station again.
The radio does not turned on at the alarm-setting time.
• The STANDBY button has not been pressed.
• The alarm-setting time is erased. Set the alarm again.
• The MAIN POWER switch is set to OFF.

TROUBLESHOOTING GUIDE TABLE OF CONTENTS
Should any problem occur with the unit, make the following simpie checks
to determine whether or not servicing is required. If the problem persists
after you have made these checks, consult the nearest Sony dealer for
further information.
The power Is not tumed on even If you press the ON/OFF button.
• Weak batteries.
• Incorrect polarity of batteries.
(See page 8.)
• The MAIN POWER switch Is set to OFF.
• The KEY PROTECT is set.
(See page 15.)
• The AC power adaptor, the battery case or the car battery cord Is
disconnected.
• Battery operation is attempted while the AC power adaptor, the battery
case or the car battery cord is connected to the unit, but not to a wall
outlet or cigarette lighter socket.
Each function does not work even If operating the unit.
• The KEY PROTECT is set.
(See page 15.)
Display Is dim.
• Weak batteries.
• The unit is being used in extremely high temperatures or in a place with
excessive moisture.
Sound is not heard at all.
•The VOLUME control is turned down completely.
• The earphone is plugged in.
Location and function of controls 4
How to change the MW channel step 8
Battery Installation 8
How to set the clock 10
Radio operation 12
Preset tuning 16
How to set the alarm 18
How to set the sleep timer 20
Specifications 21
Troubleshooting guide 22
Precautions back cover
>An FM/LW/MW/SW 1-12, 15 bands portable radio with world-wide band
coverage.
' A quartz-controlled PLL (Phase Locked Loop) synthesizer system using a
microcomputer for easy pinpoint tuning.
The tuned frequency is also digitally displayed.
' Up to 15 stations can be preset for button-touch tuning.
'An easy searching a SW station with the SW meter band select function.
' A timer standby function to receive a desired broadcast at the desired time.
' A sleep timer turns the radio off automatically in 65 minutes.

L0GATION AND FUNCTION OF CONTROLS SPECIFICATIONS
Refer to the page indicated in # for detaiis.
Front panel
STANDBY (timer standby) button ^
ALARM TIME SET button 0
CLOCK TIME SET button
KEY PROTECT button ^
Speaker
Hand strap
tWi fwi
<=> mb SELECT <=> (meter band select) button
Band select buttons
(SW, MW/LW, FM)
Circuit system
Frequency range
Antennas
Speaker
Power output
Outputs
Power requirements
Battery life
Dimensions
Weight
Supplied accessories
FM: Superheterodyne
LW/MW/SW: Dual conversion superheterodyne
FM: 76-108 MHz
MW: 530-1,700 kHz
LW: 150-285 kHz
SW: 90-11 m SW broadcast bands
FM/SW: Telescopic antenna
MW/LW: Built-in ferrlte bar antenna
Approx. 7.7 cm (SVa Inches) die.
400 mW (at 10% harmonic distortion)
Recording output jack (minijack)
output level 0.775 mV (-60 dB)
output Impedance 1 kilohm
Earphone jack (minijack) for 8 ohm earphone
6V DC
Four size AA (R6) batteries
DC IN 6 V jack accepts:
Sony AC-D4S AC power adaptor (optional) for use on 120 V
AC, 60 Hz
Sony DCC-127A or DCC-240 car battery cord (optional) for
use with 12 V or 24 V car battery, respectively
Sony EBP-6 battery case (optional) for use w'lth four size C
(R14) batteries.
Approx. 19 hours of listening for four hours a day at a normal
volume, using Sony batteries SUM-3 (NS)
Approx. 191.5 X117 X 31.5 mm (w/h/d)
(75/a X 45/3 X1V4 inches)
including projecting parts and controls
607 g (1 lb 53/3 oz)
including batteries
Earphone (1)
Short wave guide (1)
Carrying case (1)
SW compact antenna (1)
Design and specifications subject to change without notice.
OPTIONAL ACCESSORIES
AC power adaptor
Car battery cord
Battery case
Connecting cord
External antenna
Earphones
AC-D4S
DCC-127A, DCO240
EBP-6
RK-69A (minlplug«-»minlplug)
AN-1
MDR-E122
o

HOW TO SET THE SLEEP TIMER
When you fall asleep, you can listen to the radio by the sleep timer.
•SLEEP timer button ®
MAIN POWER switch
ON: To turn on the radio or to set the timer.
OFF; When carrying the radio. The radio Is kept turned
off even if the ON/OFF button is accidentaiiy
pressed.
ON/OFF button ®
^ Set the MAIN POWER switch
to ON.
2 Press the SLEEP button.
3 Tune in the desired station
with the TUNING/TIME ADJ
control and adjust the
volume with the VOLUME
control.
The radio will be turned off
automatically after about 65 minutes.
Example: To set the sleep timer to an
FM station
c" (?.' I 5
3 3 C FT MHz
C.3 U
4 I S I 6 I 7 I e 9 10 II I ISllkM FM
•TUNING Indicator
Lights up when the signal is received.
•TUNING/TIME ADJ (tuning/time
adjustment) control ®
• TONE control
Adjust the tone quality to your preference.
Normally set the control to MUSiC. When the noise is
severe during SW reception, set it to NEWS. The noise
may be reduced to some extent and the vocal part will
be heard more clearly.
PRESET buttons
VOLUME control
to decrease the volume to increase the volume
To turn off the radio before the sleep
time
Press the ON/OFF button.
When you press the SLEEP button
while listening to the radio
The radio will be turned off
automatically after about 65 minutes.
I I I I I I I i I I 1
MIN MAX

LOCATION AND FUNCTION OF CONTROLS
Rear panel
Radio stand
Lift up the stand for table use.
If the stand comes off, put It back into.
For RADIO alarm
Tune in the desired station following
the steps 2-5 on page 12.
3 n* t C
C U> I J
Telescopic antenna
ALARM selector
ALARM selector ^
(RADIO/BUZZER)
I Recording output jack
(B Earphone jack
When the earphone Is
plugged In, the sound from
the speaker does not come
out.
DC IN 6 V (external power
input) jack o
MW CH STEP selector 0
For BUZZER alarm
The buzzer sound will come on at the
preset time.
ALARM selector
D n* I c
C U' I J
The BUZZER ALARM
indicator appears.
To stop the RADIO or BUZZER alarm
• Press the ON/OFF button.—The alarm sound will come on again at the
same time the next day.
• Press the STANDBY button.—The alarm setting is released.
• Set the MAIN POWER switch to OFF.—The power is turned off.
• Press the SLEEP button in BUZZER alarm mode.—The BUZZER alarm will t)e shut off
and the radio sound comes out for the SLEEP function.
(For RADIO alarm, the SLEEP function starts automatically.)
Note: If you forget pressing the STANDBY button, the alarm sound will not come out.
Battery compartment
When the alarm time Is reached while
listening to the radio
For BUZZER alarm, the buzzer sound
comes on. When you press the
ON/OFF button twice, the radio sound
comes on again.
Set the alarm time in order not to miss
the reception time of your desired radio
program. It is useful especially for
receiving the SW stations since they
are not broadcasted ail day long.

HOW TO SET THE ALARM
Display window The Indications appear as follows.
■1 Set the MAIN POWER switch
to ON.
2 Set the alarm time by
turning the TUNING/TIME
ADJ control while keeping
the ALARM button pressed.
3 Press the STANDBY button.
Example: To set the alarm to 6:30
^ o: I 5
b:3S
f1 luupown
\p C i n
IC O i uu 'tHz laa^" '
|1 2 3 4 Is 6 7 I 8 9 j 10 11 121^ FU
KEY PROTECT indicator
Time/frequency indicator
MAIN POWER indicator
PRESET number indicator
Band indicator
FM, MW/LW band
scale
4 Set the ALARM selector to
RADIO or BUZZER.
3 n' I C nAmnwn
C u. I 3 "" I
SW meter band scale
CLOCK/AURM/STANDBY/SLEEP Indicators
BUZZER ALARM indicator
The volume of the alarm sound
• The volume of the radio sound can
be adjusted.
(However, it is audible even if the
volume is set to MIN.)
• The volume of the buzzer sound is
always the same.
To check the preset time.
Press the ALARM button.
To Change the alarm time
Set the desired alarm time, the alarm
time previously set is erased.

HOW TO CHANGE THE MW CHANNEL STEP
The MW CH STEP is preset at the factory to 10 kHz to match the frequency
allocation system of the U.S.A. and Canada. If you use the radio where the
frequency allocation system is based on a 9 kHz Interval, such as in the
European and other countries, set the MW CH STEP selector In the battery
compartment to 9 kHz.
TO TUNE IN A PRESET STATION
BATTERY INSTALLATION
Before installing the batteries, be sure
to check that the MW CH STEP
selector Is set correctly. (See above.)
Note: The unit cannot be operated on the
internal batteries when the AC power
adaptor, the car battery cord or the
battery case Is connected to the unit.
BATTERY REPLACEMENT
Replace all the batteries with new
ones when the sound becomes weak
or distorted.
Concerning the battery life, see
"Specifications".
To replace the batteries
Do It within one minute since the
preset stations and the current time
will be erased when more than one
minute has passed.
After removing the batteries for a long
time
Be sure to preset the stations and set
the current time and the timer again.
When the batteries are removed, the
preset stations, the current time and
the timer-setting time will be erased.
Insert the batteries with
correct polarity.
Four size AA (R6) batteries
■J Set the MAIN POWER switch to ON.
2 Press the ON/OFF button.
3 Press the desired band button.
4 Press the desired PRESET button.
For removing the batteries,
lay the battery strap
underneath the batteries.

PRESET TUNING
ISet the MAIN POWER switch Example: To preset an FM station to
to ON PRESET 1 button.
2 Press the ON/OFF button.
3 Tune in a desired station.
(See page 12.)
4 Press a desired PRESET
number button while
keeping the ENTER
button pressed.
3i?.5
«l| Z 9 4 I 9 I 6 I 7 I S 9 I 10 n tZ ||!i"« FU
The number of stations you can preset
is 15; five stations for each band (FM,
MW/LW, SW) can be preset to each
PRESET button.
To change the preset station
Preset a station to the desired PRESET
button; the station previousiy preset to
the button is erased.
OTHER POWER SOURCES
The internal batteries are automatically disconnected when the AC power
adaptor, the car battery cord or the battery case Is connected to the DC IN
6 V Jack.
House current
Connect the Sony AC-D4S AC power adaptor (optional) to the DC IN 6 V jack,
and plug it into a wall outlet.
Car battery
For use on 12 V car battery, connect the Sony DCC-127A car battery cord
(optional) to the DC IN 6 V jack. For use on 24 V car battery, use the Sony
DCC-240 car battery cord (optional).
Battery case
Connect the Sony EBP-6 battery case (optional) to the DC IN 6 V jack.
Note: Use only the recommended AC power adaptor or the car
battery cord manufactured by Sony. Polarity of the plugs of
other manufacturers may be different.
Poiarlty of the Sony plug

HOW TO SET THE CLOCK
To advance or turn back the time Indication
To advance the time digits rapidly, turn
the TUNING/TIME ADJ controi quickly.
Turn it slowly to adjust the time
indication precisely.
Clockwise
To advance
To turn back
Counterclockwise
TO PRESENT i^CIDENTAL CHANGE OF THE RECEIVING
STATION
Press the KEY PROTECT button. The »-n mark appears in the display
window, and all the buttons on the front panel and the TUNING/TIME
ADJ control do not work even If they are operated (KEY PROTECT).
This function Is also available when the ON/OFF button is set to
OFF.
To release the KEY PROTECT function, press the KEY PROTECT
button again or set the MAIN POWER switch to OFF. The o-n mark
disappears.
HOW TO USE THE SUPPLIED SW COMPACT ANTENNA
*1 Fully pull out the cord from the case.
2 Attach the coupler to the telescopic
antenna.
3 When the window can be opened:
Extend the cord and the case out
through the window, after making
sure there Is no danger.
When the window cannot be opened:
Fully extend the cord along the
frame of the window.
Coupler
iCF-7700
The last station of each band you
listened to Is memorized
when you switched the band to
another. Therefore, you can go back to
the station by pressing the band select
button again.
Compact antenna
When extending the cord outside
Be careful not to disturb other people
and do not let the cord be touched by
the children.
After using
Wind the reel in the
direction of the
arrow.