Sony SRF-HM22 User manual

SONY 3-757-954-21 (1)
FM Stereo/AM PLL Synthesized Headphone Radio
SRF-HM22
Operating Instructions
Before operating the unit, please read this manual thoroughly and
retain it for future reference.
Sony Corporation ©1993 Printed in Taiwan, R.O.C.

sag aa@
Om
5' 3
£3
n> =
Sm
Sm
3H
n-—
-
^+
33
"c
ff. o
33
re »
H. 3=
hi rn
o
3*
re
-it- ao.
2- S
ai
>< o
Sg*
3
300
0CM
3C
O2
to 13
a)
3
>
2
33
B) <»
3C-
rt- l-r*
o
3
S»
3
D.
3
CM
H3"
Ha"
0)
3
^Un. ft
o
c
o
3
3"°
in
«-50
»?w» o-
OID
33
in w_
J*
<"
3
3
a
3
o
o
3
O
as
i-
o
9
i-
w
IB
5"
a
0
2'<
oc
£L re
re C/3
O. ST
->S
g^
ag.
to ID
On
U> ft
sr
n>
13
»-t
n>
v>
n
-I 3T3 till
'£3 pco

Installing Batteries
When to replace the batteries
When the batteries become weak, sound becomes weak or
the stereo sound becomes monaural. When the batteries
are run down completely, the power is turned off and the
"O O O"in the display window flashes. When the power
is turned on with the indication flashing, the power is
turned off right away. While the "oOO "starts flashing,
replace both batteries with new ones. After the batteries
are replaced, turn the power on again to stop the flashing
of the indication.
When replacing the batteries
Replace the batteries within about 30 seconds. If you do
not replace them within 30 seconds, the preset stations
may be canceled, and "AM 12:00" flashes in the display
window.
For battery life, see "Specifications".
To avoid damage from battery leakage and
corrosion
Remove the batteries when you do not use the unit for a
long time.
When the batteries are removed for along time
Preset stations are canceled and "AM 12:00" is
displayed.
Preset stations again and reset the clock.
The indication of the power remaining in the battery
New batteries >Used batteries
oo o
When the power has
been exhausted
aOO;
When you turn on the unit, the power remaining in the
battery is displayed for about one second and ahalf. The
unit displays one of the four indications depending on the
power remaining in the battery.

Setting the Clock
Set the clock or display time when the radio is turned off.
R(right)
1When you insert batteries for the first time, digits flash in the display window.
To stop flashing, press the ENTER/CLOCK button.
AM 12:00 =midnight
PM 12:00 =noon -v Is
'i^
2While pressing the ENTER/CLOCK button, press the TUNE/TIME SET buttons
("+" or "-") to set the clock to the current time. Each time the TUNE/TIME SET
button is pressed, the digits move forward or back by one.
When you keep the button pressed, the digits change rapidly.
Lights while the
ENTER/CLOCK button
is pressed.
"IE-ED
3When you release the ENTER/CLOCK button, the clock starts to operate and
":" of the time indication flashes.
If you release the ENTER/CLOCK button simultaneously with the time signal
as it sounds, the clock starts from zero second.
I&JB0

Tuning in and Presetting Stations
1 Press the POWER button.
2Adjust the VOL (volume).
3Select adesired band.
iaBS.U
4Tune in adesired station.
+: To tune in ahigher frequency.
-: To tune in alower frequency.
5Store the station.
While keeping the ENTER/CLOCK button pressed, press the desired preset
number button. Then the preset number appears in the display window.
.89.0 .83.0 t
Repeat these steps for each station to be preset.
Up to 5stations in each band can be preset.
To turn off the radio, press the POWER button.
To change the preset station
Preset anew station to adesired preset button; the station previously preset for
that button will be erased.

L(l«ft) R(right)
3
SENS
DX/LOCAL
2
1
1Press the POWER button.
2Press the desired preset button.
3Adjust the VOL (volume).
On FM SENS OX/LOCAL Selector
DX: Normally set it to this position and the radio operates in stereo mode for FM
stereo programs and will be automatically switched to mono for non-stereo
programs.
LOCAL: Set it to this position, if avery strong station signal causes noise or if
multipath* occurs. The reception will be more stable and noise will be
*Multipath, which often occurs in astreet with big buildings or in amountainous area, is
reflection of signals that reach the receiver from structures or hills considerably later than
direct signals. Amultipath condition brings about high-frequency noise, distortion, and a
poor stereo effect in FM reception.
reduced.

Precautions
•Do not open the unit. Refer servicing to qualified personnel only.
•Operate the unit on 3VDC with two size AAA (R03) batteries.
•When the unit is not to be used for along period of time, remove the batteries to
avoid unit damage from battery leakage.
•Avoid exposure to temperature extremes, direct sunlight, moisture, sand, dust,
or mechanical shock. Never leave in acar parked in the sun.
•Should any liquid or solid object fall into the unit, remove the batteries, and have
the unit checked by qualified personnel before operating it any further.
•Clean the unit with asoft cloth dampened with amild detergent solution.
Never use abrasive cleansers or chemical solvents, as they may mar the unit.
•In vehicles or buildings, radio reception may be difficult or noisier. Try listening
near awindow.
•If there is lightning when you are using the unit, take off the headphone radio
immediately.
•Never use an electric hair dryer while wearing the headphones.
Note on AM channel step
The AM channel step differs depending on areas. The channel step of this unit is
factory-set to 10 kHz. You can change the channel step (See "changing AM
channel step".)
Area Channel Step
North American countries 10 kHz
Other countries 9kHz
Notes on headphones
Road Safety
Do not use headphones while driving, cycling, or operating any motorized vehicle.
It may create atraffic hazard and is illegal in many areas. It can also be potentially
dangerous to play your headsets at high volume while walking, especially at
pedestrian crossings. You should exercise extreme caution or discontinue use in
potentially hazardous situations.
Preventing hearing damage
Avoid using headphones at high volume. Hearing experts advise against
continuous, loud and extended play. If you experience aringing in your ears,
reduce volume or discontinue use.
Caring for others
Keep the volume at amoderate level. This will allow you to hear outside sounds
and to be considerate to the people around you.
If you have any questions or problems concerning your unit that are not covered in
this manual, please consult the nearest Sony dealer.
Troubleshooting Guide
Trouble Causes
Sound is not heard at all. •Incorrect polarity of batteries.
•Weak batteries.
•VOL is turned down completely.
Very weak or interrupted
sound, distorted sound
when volume is turned up,
or unsatisfactory reception.
•Weak batteries.
•Incorrect tuning.
•Weak signal. When in avehicle or in a
building, listen near awindow.
•SENS is set to LOCAL. Set it to DX
Presetting cannot be made. •Incorrect presetting. When storing the
station, preset ENTER before pressing the
desired preset button.
The preset station cannot
be received.
•Incorrect preset button has been pressed.
•The preset station has been cleared when
replacing batteries.
(Batteries should be replaced within thirty
seconds.)
No display even when
POWER is on.
•Weak batteries.

Owner's Record
The model number is located at the right rear and the serial number at the left rear.
Record the serial number in the space provided below.
Refer to them whenever you call upon your Sony dealer regarding this product.
Model No. SRF-HM22 Serial No.
Features
•FM Stereo/AM PLL (Phase Loced Loop) synthesized headphone radio
•Adjustable double headbands designed to fit your head
•The AVLS (Automatic Volume Limiter System) to allow you to limit the maximum volume
without degrading the sound quality
•Capability to preset up to 5stations in each band preset in the desired order
•Light reflector to reflect car lights at night for your safety
Specifications
Frequency range (Channel Step)
FM:87.5-108 MHz (0.1 MHz)
AM:530-1,710 kHz (10 kHz)
FM:87.5-108 MHz (0.05 MHz)*
AM:531-1,710 kHz (9 kHz)
Headphone type
Dynamic
Power output
20 mW +20 mW (at 10%
harmonic distortion)
Power requirement
3VDC
two size AAA (R03) batteries
Battery life
For FM reception:
Approx. 32 hours with Sony
alkaline AM4 (N)
Approx. 17 hours with Sony
UM-4 (NU)
For AM reception:
Approx. 40 hours with Sony
alkaline AM4 (N)
Approx. 22 hours with Sony
UM-4 (NU)
Mass Approx. 154 g(5 oz)
including batteries
*The frequency display is raised or lowered by steps of 0.1 MHz.(Example: Frequency
88.05 MHz is displayed as "88.0 MHz".)
Design and specifications are subject to change without notice.

Sony Service Centers
Arizona
Phoenix
2240 North Scottsdale Road
Temp* AZ 85281
[phone]
California
Burbank (Lot Angeles area)
4100 Riverside Drive, Suite A
Burbank, CA 91505
1818) B42-7669
Costa Mesa lOrange County area)
2729 Bristol Street South
Costa Mesa, CA 92626
[phone]
San Bruno (San Francteoo area)
751 Cemino Plaza
San Bruno, CA 94066
[phone]
San Diego
8975 Complex Drive
San Diego, CA 92123
[phone]
San Jose
1359 Ok) Oakland Road
San Jose, CA 95112
[phone]
Colorado
Denver
Havana Place Center
10740 East lliff Avenue
Aurora, CO 80014
[phone]
Florida
Fort Lauderdale
2850 North 28th Terrace
Hollywood. 33020
[phone]
Georgia
Atlanta
120 Interstate North Parkway East
Suite 410
Atlanta, GA 30339
(4041 953-5871
Hawaii
Honolulu
950 Mapunapuna Street
Honolulu, Hi 96819
[phone]
IMnote
Chicago
1730 West Fullerton, Suite 4
Riverpoint Shopping Center
Chicago, IL 60614
[phone]
Mm (Chicago N.W.)
7540 North Caldwell Avenue
Niles, IL 60648
[phone]
Westmom (Chicago S.W.I
6036-38 South Cass Avenue
Westmont, IL 60559
[phone]
Kansas
Kansas City
11712 West 95th Street
Overland Park
KS 66214
[phone]
Maryland (Washington D.C.)
Washington D.C-
5300 Sunnyside Avenue
Beltsville, MD 20705
[phone]
Massachusetts
Boston
390 University Avenue
128 Westwood Industrial Center
Westwood, Wlft 02090
[phone]
Michigan
Detroit
43304 Eleven Mile Road
Novi, Ml 48050
[phone]
Minnesota
Minneapots
4300 W. 36 V: Street
St. Louis Park, MN 55416
[phone]
Missouri
St. Louis
12462-D Natural Bridge Road
Bridgeton, MO 63044
[phone]
New Jersey
Mahwah (N.Y. Metropolitan Aree)
386 Route 17 South
Mahwah, NJ 07430
[phone]
Union
Bradlees Shopping Center
US Highway 22 At Morris Avenue
Union, NJ 07083
[phone]
Ohio
Cleveland
6370 Stork Road
Parma Heights, OH 44130
[phone]
Pennsylvania
Philadelphia
651 Park Avenue
King of Prussia, PA 19406
[phone]
Pittsburgh
Wexford Plaza
10610 Perry Highway (Rt. 19N)
Wexford, PA 15090
(4121 935-8466
Texas
Dales
401 Preston Valley Shopping Center
Dallas, TX 75230
1214) 661-3537
Houston
7639 Weathelmer
Houston, TX 77063
[phone]
Washington
Seattle
835 Rdalgo
Seattle, WA 98108
[phone]
Sony District Service
Western Zone
western District
Sony Service Company
2729 Bristol Street South
Costa Mesa, CA 92626
[phone]
Northwestern District
Sony Service Company
1359 Old Oakland Road
San Jose, CA 95112
[phone]
Southwestern District
Sony Service Company
3201 Premier Dr., Suite 100
Irving, TX 75063
[phone]
Offices
Central Zone
Mid West District
Sony Service Company
1200 N. Arlington Heights Rd.
Itasca, IL. 60143
[phone]
East Central District
Sony Service Company
26200 Town Center Drive,
Suite 300 Novi, Ml 48050
[phone]
Eastern Zone
Eastern District
Sony Service Company
386 Route 17 South
Mahwah, NJ 07430
[phone]
Mid-Atlantic District
Sony Service Company
651 Park Avenue
King of Prussia, PA 19406
[phone]
Southeastern District
Sony Service Company
120 Interstate North Parkway East
Suite 414
Atlanta, GA 30339
[phone]

SONY, TRANSISTOR RADIO
LIMITED WARRANTY
SONY ELECTRONICS INC. {"SONY") warrants this product against defects in material or work-
manship, as follows:
1. For aperiod of 1year from the date of purchase, SONY will pay the labor charges of your
SONY authorized service facility to repair the defective product. After this 1year period, you must
pay for all labor charges.
2. In addition, SONY will supply, at no charge, new or rebuilt replacements for defective parts
for aperiod of 1year from the original date of purchase.
To obtain warranty service, you must take the product, or deliver the product prepaid, to aSONY
authorized service facility.
This warranty does not cover cosmetic damage, and damage due to acts of God, accident, misuse,
abuse, or negligence to this product including antenna. This warranty is valid only in the United
States of America.
Proof of purchase in the form of abill of sale or receipted invoice which is evidence that the unit
is within the warranty period must be presented to obtain warranty service
This warranty is valid only if the serial number appears on the product.
REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REME-
DY OF THE CONSUMER. SONY SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUEN-
TIAL DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY ON THIS PRODUCT.
EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE ON THIS PRODUCT IS LIMITED
IN DURATION TO THE DURATION OF THIS WARRANTY.
Some states do not allow the exclusion or limitation of incidental or consequential damages, or
allow limitations on how long an implied warranty lasts, so the above limitations or exclusion may
not apply to you. This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
For your convenience, Sony Electronics Inc. has established the Customer Information Center to
supply you with product or service information.
Important: If returning product for service, please see reverse side of this card for your nearest
Sony Service Center.
SONY CUSTOMER INFORMATION CENTER
201-930-SONY (7669)
714-821-SONY (76691
708-250-SONY (7669)
or write to:
Sony Customer Information Center
Sony Drive, Mail Drop #T1-11
Park Ridge, NJ 07656
SONY ELECTRONICS INC.
Sony Drive, Park Ridge, New Jersey 07656