Panasonic Car Stereo System CQ 5250U User Manual

Heavy duty MP3 CD player/weather band receiver  
Model:  
CQ-5250U  
Operating Instructions  
TEXT  
¡Please read these instructions (including “Limited Warranty” and “Customer Services Directory”) carefully before using this product and  
keep this manual for future reference.  
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Observe the following cautions when  
installing.  
Caution  
Observe the following cautions when using  
this unit.  
Keep the sound volume at an appropriate level.  
Keep the volume level low enough to be aware of road and  
traffic conditions while driving.  
Do not insert or allow your hand or fingers to be  
caught in the unit.  
To prevent injury, do not get your hand or fingers caught in  
moving parts or in the disc slot. Especially watch out for  
infants.  
This unit is designed for use exclusively in auto-  
mobiles.  
Do not operate the unit for a prolonged period with  
the engine turned off.  
Operating the audio system for a long period of time with  
the engine turned off will drain the battery.  
Do not expose the unit to direct sunlight or exces-  
sive heat.  
Otherwise these will raise the interior temperature of the  
unit, and it may lead to smoke, fire, or other damage to the  
unit.  
Do not use the product where it will be exposed to  
water, moisture, or dust.  
Exposure of the unit to water, moisture, or dust may lead  
to smoke, fire, or other damage to the unit. Make especially  
sure that the unit does not get wet in car washes or on  
rainy days.  
Refer wiring and installation to qualified service  
personnel.  
Installation of this unit requires special skills and experi-  
ence. For maximum safety, have it installed by your dealer.  
Panasonic is not liable for any problems resulting from  
your own installation of the unit.  
Follow the instructions to install and wire the product.  
Not following the instructions to properly install and wire  
the product could cause an accident or fire.  
Take care not to damage the leads.  
When wiring, take care not to damage the leads. Prevent  
them from getting caught in the vehicle chassis, screws,  
and moving parts such as seat rails. Do not scratch, pull,  
bend or twist the leads. Do not run them near heat sources  
or place heavy objects on them. If leads must be run over  
sharp metal edges, protect the leads by winding them with  
vinyl tape or similar protection.  
Use the designated parts and tools for installation.  
Use the supplied or designated parts and appropriate tools  
to install the product. The use of parts other than those  
supplied or designated may result in internal damage to the  
unit. Faulty installation may lead to an accident, a malfunc-  
tion or fire.  
Do not block the air vent or the cooling plate of the  
unit.  
Blocking these parts will cause the interior of the unit to  
overheat and will result in fire or other damage.  
Do not install the product where it is exposed to  
strong vibrations or is unstable.  
Avoid slanted or strongly curved surfaces for installation. If  
the installation is not stable, the unit may fall down while  
driving and this can lead to an accident or injury.  
To ensure safety, never attempt to preset stations  
while you are driving.  
Depending upon the transmission condition of  
electro-magnetic waves, the geographical reasons  
and/or the weather conditions, you may not  
receive the NOAA radio partially or at all.  
Make sure that your weather radio can receive  
properly before driving, especially, before use in a  
critical condition.  
Set the volume level to low enough before the AUX  
connection is completed.  
Failure to observe this, the loud noise may come out and  
damage your speakers and your hearing. Direct connection  
of the speaker/headphone output of an external device  
without any attenuator may distort sound or damage the  
connected external device.  
Installation Angle  
The product should be installed in a horizontal position  
with the front end up at a convenient angle, but not more  
than 30˚.  
The user should bear in mind that in some areas there may  
be restrictions on how and where this unit must be  
installed. Consult your dealer for further details.  
Wear gloves for safety. Make sure that wiring is  
completed before installation.  
To prevent damage to the unit, do not connect the  
power connector until the whole wiring is complet-  
ed.  
Do not connect more than one speaker to one set  
of speaker leads. (except for connecting to a  
tweeter)  
Caution  
PLEASE FOLLOW THE LAWS AND REGULATIONS OF YOUR STATE, PROVINCE OR COUNTRY FOR WIRING,  
INSTALLATION, AND USE OF THIS UNIT AND THE DEVICES TO BE CONNECTED.  
Find the model number and serial number on either the back or bottom of the unit. Please record them in the space  
below and retain this booklet as a permanent record of your purchase to help with identification in case of theft.  
MODEL NUMBER  
DATE PURCHASED  
CQ-5250U  
SERIAL NUMBER  
FROM  
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3
CQ-5250U  
Safety Information (continued)  
The following applies only in the U.S.A.  
Part 15 of the FCC Rules  
Warning  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK OR  
PRODUCT DAMAGE, DO NOT EXPOSE THIS APPLIANCE TO  
RAIN, SPLASHING, DRIPPING OR MOISTURE.  
FCC Warning:  
Any unauthorized changes or modifications to this equipment  
would void the user's authority to operate this device.  
Caution  
THIS PRODUCT IS A CLASS I LASER PRODUCT.  
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE  
OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN  
MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.  
DO NOT OPEN COVERS AND DO NOT REPAIR BY  
YOURSELF. REFER SERVICING TO QUALIFIED  
PERSONNEL.  
Laser Products:  
Wave length: 790 nm  
Laser power: No hazardous radiation is emitted with safety  
protection.  
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, AND  
ANNOYING INTERFERENCE, USE ONLY THE INCLUDED  
COMPONENTS.  
Customer Services Directory  
U.S.A.  
Obtain Product Information and Operating Assistance; locate  
your nearest Dealer or Servicenter; purchase Parts and  
Accessories; or make Customer Service and Literature requests  
by visiting our Web Site at:  
You may also contact us directly at:  
1-800-332-5368 (Phone) 1-800-237-9080 (Fax Only) (Monday-  
Friday 9 am to 8 pm, EST.)  
Panasonic Services Company  
or, contact us via the web at:  
You may also contact us directly at:  
1-800-211-PANA (7262),  
20421 84th Avenue South, Kent, WA 98032  
(We accept Visa, MasterCard, Discover Card, American Express,  
and Personal Checks)  
For hearing or speech impaired TTY users,  
TTY : 1-866-605-1277  
Monday-Friday 9 am-9 pm; Saturday-Sunday 10 am-7 pm, EST.  
Service in Puerto Rico  
Panasonic Puerto Rico, Inc.  
Panasonic Sales Company  
For hearing or speech impaired TTY users,  
TTY : 1-877-833-8855  
Accessory Purchases:  
Factory Servicenter:  
Ave. 65 de Infantería, Km. 9.5, San Gabriel Industrial Park,  
Carolina, Puerto Rico 00985  
Purchase Parts, Accessories and Instruction Books online for all  
Panasonic Products by visiting our Web Site at:  
or, send your request by E-mail to:  
Phone (787) 750-4300, Fax (787) 768-2910  
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CQ-5250U  
4
Limited Warranty  
Some states do not allow the exclusion or limitation of incidental or conse-  
quential damages, or limitations on how long an implied warranty lasts, so  
the exclusions may not apply to you.  
U.S.A.  
PANASONIC CONSUMER ELECTRONICS COMPANY,  
DIVISION OF PANASONIC CORPORATION OF NORTH AMERICA  
One Panasonic Way, Secaucus, New Jersey 07094  
This warranty gives you specific legal rights and you may also have other  
rights which vary from state to state. If a problem with this product develops  
during or after the warranty period, you may contact your dealer or  
Servicenter. If the problem is not handled to your satisfaction, then write to  
warrantor’s Consumer Affairs Department at the addresses of the warrantor.  
PANASONIC SALES COMPANY,  
DIVISION OF PANASONIC PUERTO RICO, INC.  
Ave. 65 de infanteria, Km. 9.5, San Gabriel Industrial Park  
Carolina, Puerto Rico 00985  
PARTS AND SERVICE WHICH ARE NOT COVERED BY THIS LIMITED WAR-  
RANTY ARE YOUR RESPONSIBILITY.  
PANASONIC AUTO PRODUCTS  
LIMITED WARRANTY  
Customer’s Record  
Model  
No.  
LIMITED WARRANTY COVERAGE  
If your product does not work properly because of defects in materials and  
workmanship.  
Serial  
No.  
Dealer’s  
No.  
Code  
No.  
Dealer’s  
Address  
Panasonic Consumer Electronics Company or Panasonic Sales Company  
(collectively referred to as “the warrantor”) will, for the length of the period  
indicated in the chart below, which starts with the date of original purchase  
(“warranty period”), at its option either (a) repair your product with new or  
refurbished parts, or (b) replace it with a new or refurbished product. The  
decision to repair or replace will be made by the warrantor.  
Categories  
Parts  
Labor  
Date of  
Purchase  
Audio Components (except items listed  
below)  
MXE Series Audio Components (except  
items listed below)  
One (1) Year  
One (1) Year  
Two (2) Years  
One (1) Year  
Two (2) Years  
Not Applicable  
Speakers  
Defective Car Audio Speakers under war-  
ranty must be exchanged at the place of  
purchase. Contact your Dealer for details.  
Accessories (in exchange for defective  
items)  
Ninety (90) Days Not Applicable  
During the “Labor” warranty period, there will be no charge for labor. During  
the “Parts” warranty period, there will be no charge for parts. You must carry  
in or mail in your product prepaid during the warranty period. If non-  
rechargeable batteries are included, they are not warranted. This warranty  
only applies to products purchased and serviced in the United States or  
Puerto Rico. This warranty is extended only to the original purchaser of a  
new product which was not sold “as is”. A purchase receipt or other proof of  
the original purchase date is required for warranty service.  
CARRY-IN OR MAIL-IN SERVICE  
For Carry-In or Mail-In Service in the United States, call 1-800-211-PANA  
(7262) or visit  
For assistance in Puerto Rico, call Panasonic Sales Company (787)-750-  
4300 or fax (787)-768-2910.  
LIMITED WARRANTY LIMITS AND EXCLUSIONS  
This warranty ONLY COVERS failures due to defects in materials and work-  
manship, and DOES NOT COVER normal wear and tear or cosmetic damage.  
The warranty ALSO DOES NOT COVER damages which occurred during  
shipment, failures which are caused by products not supplied by the warran-  
tor, failures which result from accident, misuse, abuse, neglect, bug infesta-  
tion, mishandling, misapplication, alteration, faulty installation, set-up  
adjustment, maladjustment of consumer control, improper maintenance,  
improper antenna, inadequate signal reception or pickup, power line surge,  
improper voltage supply, lightning, modification, commercial use (such as  
use in hotels, offices, restaurants, or other business uses) or rental use of  
the product, or service by anyone other than the technician from Factory  
Servicenter or other authorized service centers, or damage that is attributa-  
ble to acts of God.  
THERE ARE NO EXPRESS WARRANTIES EXCEPT AS LISTED UNDER “LIM-  
ITED WARRANTY COVERAGE”. THE WARRANTOR IS NOT LIABLE FOR  
INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE  
OF THIS PRODUCT, OR ARISING OUT OF ANY BREACH OF THIS WARRAN-  
TY. (As examples, this excludes damages for lost time, cost of having some-  
one remove or re-install an installed unit if applicable, travel to and from the  
servicer, and loss of media, data or other memory contents. The items listed  
are not exclusive, but are for illustration only.) ALL EXPRESS AND IMPLIED  
WARRANTIES, INCLUDING THE WARRANTY OF MERCHANTABILITY, ARE  
LIMITED TO THE PERIOD OF THE LIMITED WARRANTY.  
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5
CQ-5250U  
Before Reading These Instructions  
Panasonic welcomes you to our ever growing family of electronic product owners. We know that this product will  
bring you many hours of enjoyment. Our reputation is built on precise electronic and mechanical engineering, man-  
ufactured with carefully selected components and assembled by people who take pride in their work. Once you dis-  
cover the quality, reliability, and value we have built into this product, you too will be proud to be a member of our  
family.  
Accessories  
1. Operating Instructions ..................................................................................................1  
2. Supplied Hardware.............................................................................1 set (page 19)  
Contents  
Safety Information . . . . . . . . . . . . . . . . . . . . . .2  
Customer Services Directory . . . . . . . . . . . . . . .4  
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . .5  
Before Reading These Instructions . . . . . . . . . . .6  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Front AUX terminal, Sound Control, USB Connector  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . .18  
Electrical Connections . . . . . . . . . . . . . . . . . . .22  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . .23  
If You Suspect Something Wrong, Common, Radio, CD,  
MP3/WMA, USB, Product Servicing  
Error Display Messages . . . . . . . . . . . . . . . . . .27  
CD/MP3/WMA, USB  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . .29  
Cleaning this Unit, Caution  
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
First time power on, Clock adjustment  
Controls Layout . . . . . . . . . . . . . . . . . . . . . . . .9  
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10  
Power, Source Selection, Volume, Mute, Display Change  
Sound Controls . . . . . . . . . . . . . . . . . . . . . . . .11  
SQ (Sound Quality) , Audio Modes (Bass/Treble/Balance/Fader)  
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12  
Band, Frequency adjustment, Auto Preset Memory (APM),  
Preset station selection, Manual Preset Memory, Tuning in a  
Weather Band Station  
Notes on MP3/WMA . . . . . . . . . . . . . . . . . . . .30  
Cautions as to compressed audio files, Cautions as to the  
display of this unit, Cautions as to compressed audio files,  
Common  
Notes on Discs . . . . . . . . . . . . . . . . . . . . . . . .32  
How to hold the disc, Unusable discs, Disc insert, Disc  
cleaning, Notes on CD-Rs/RWs  
Specifications . . . . . . . . . . . . . . . . . . . . . . . .33  
General, FM Stereo Radio, AM Radio, Weather Band Radio,  
CD Player  
CD/MP3/WMA Player . . . . . . . . . . . . . . . . . . . .14  
Disc loading/ejection, Track/File selection, Folder selection  
(MP3/WMA), Pause, Display change, Scan, Repeat, Random  
USB (MP3/WMA) . . . . . . . . . . . . . . . . . . . . . .16  
USB device connection, File selection, Folder selection,  
Pause, Display change, Scan, Repeat, Random  
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CQ-5250U  
6
Features  
Front AUX terminal  
USB Connector  
Your mobile audio player and other devices are connectable to  
this unit without any difficulty.  
The USB connector is equipped on the front panel.  
Connection of a USB memory (not included) to the USB  
connector via a USB extension cable (not included) allows users  
to enjoy MP3/WMA files stored on the USB memory (not  
included) in the car.  
Sound Control  
SQ (Sound Quality)  
You have four preset modes (FLAT, ROCK, POP and VOCAL).  
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7
CQ-5250U  
Preparation  
First time power on  
Turn the key in the ignition until the accessory  
1
indicator lights.  
Press [SRC] (PWR).  
2
Clock adjustment  
The 12-hour system is used for the clock.  
Adjust the minute.  
5
6
[
]
:
:
Sets ahead.  
Sets back.  
Press [DISP] (CLK).  
d
s
1
[
]
(Clock display)  
Minute entered  
Completed  
Hold down [DISP] (CLK) for 2 sec. or more.  
2
3
Press [DISP].  
Hour blinks  
Adjust the hour.  
Notes:  
¡ “ADJUST” is displayed before adjusting the clock.  
¡ Hold down [ ] or [ ] to change numbers rapidly.  
[
]
:
:
Sets ahead.  
Sets back.  
d
s
[
]
d
s
¡ When you want to readjust the time, repeat steps 2 to 6.  
Hour entered  
Minute blinks  
Press [DISP] (CLK).  
4
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CQ-5250U  
8
Controls Layout  
SRC Source (a page 10)  
PWR Power (a page 10)  
u (Eject) (a page 14)  
Disc slot  
BAND (a page 12)  
DISP Display (a page 10, etc.)  
5
Play/Pause  
y
CLK Clock (a page 8)  
(a page 14,16)  
APM Auto Preset Memory  
(a page 12)  
USB Connector  
(a page 16)  
Preset Buttons [1] to [6]  
(a page 12)  
SCROLL (a page 14, etc.)  
SCAN/REPEAT/RANDOM (a page 14,16)  
FOLDER }/{ (a page 14, 16)  
AUX  
MUTE (a page 10)  
SQ Sound Quality  
(a page 11)  
From line output of  
external sound/audio  
device (ex. Silicon-  
audio player, HDD  
player, etc.)  
VOLUME (a page 10)  
PUSH SEL Select  
(a page 11)  
TUNE/SEEK  
/
(a page 12)  
s d  
FILE (Track/File)  
/
(a page 14, 16)  
s d  
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9
CQ-5250U  
General  
Source Selection  
Display Change  
The source changes as follows every time [SRC] (Source)  
Press [DISP] to switch to the clock display.  
is pressed.  
When the power is off:  
Radio  
FM, AM, WB  
(a page 12)  
clock display (default)  
No display  
Disc player  
CD, MP3/WMA  
(a page 14)  
Note: “ADJUST” is displayed when the clock is not adjusted.  
(a page 8)  
USB  
MP3/WMA  
(a page 16)  
AUX  
Device connected to  
the AUX terminal of  
this unit  
Power  
Volume  
Turn the knob clockwise to increase volume, and counterclock-  
wise to decrease volume.  
Turn the key in the ignition until the accessory indicator lights.  
Power on: Press [SRC](PWR).  
Volume level (0 to 40)  
Power off: Hold down [SRC](PWR) for more than 1 second.  
Up  
(default:18)  
Down  
Mute  
Press [MUTE] to mute the sound completely.  
Press [MUTE] again to cancel.  
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CQ-5250U  
10  
Sound Controls  
SQ (Sound Quality)  
SQ is a function that can call up various sound types at the  
touch of button in accordance with your listening music type.  
Press [SQ] for more than 2 seconds to select the sound type as  
follows:  
(FLAT) flat frequency response:  
does not emphasize any part.  
(default)  
(ROCK) speedy and heavy sound:  
exaggerates bass and treble.  
(POP) wide-ranged and deep sound:  
slightly emphasizes bass and treble.  
(VOCAL) clear sound:  
emphasizes middle tone and slightly  
emphasizes treble.  
SQ indicator  
Audio Modes (Bass/Treble/Balance/Fader)  
Push [SEL] to select the audio mode.  
Turn [VOLUME] clockwise or counterclock-  
1
2
wise to change each level.  
q: Up  
(Volume)  
w: Down  
(Setting Range: 0 to 40, default: 18)  
q: Increased  
w: Decreased  
(Bass)  
(Setting Range: –12 dB to +12 dB by 2 dB,  
default: 0 dB)  
q: Increased  
w: Decreased  
(Treble)  
(Setting Range: –12 dB to +12 dB by 2 dB,  
default: 0 dB)  
q: Right enhanced  
w: Left enhanced  
(Balance)  
(Setting Range: 15 levels each and 0 (center),  
default: CNT)  
q: Front enhanced  
w: Rear enhanced  
(Fader)  
(Setting Range: 15 levels each and 0 (center),  
default: CNT)  
Note: If no operation takes place for more than 5 seconds in audio  
mode (2 seconds in volume mode), the display returns to the regular  
mode.  
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11  
CQ-5250U  
Radio  
Band  
Caution  
Press [BAND] to change the band.  
To ensure safety, never attempt to preset stations  
while you are driving.  
(FM stereo) indicator  
lights while receiving an FM stereo signal.  
Weather Band  
(a page 13)  
Frequency adjustment  
Preset station selection  
[TUNE/SEEK  
]: Lower  
]: Higher  
Press the corresponding preset button from [1] to [6] to tune in  
a preset station.  
s
d
[TUNE/SEEK  
Note: Hold down for 0.5 sec. or more and release for station  
search.  
Auto Preset Memory (APM)  
Manual Preset Memory  
Press and hold [BAND] (APM: auto preset memory) for more  
than 2 seconds.  
• The 6 stations with good reception will be automatically saved  
in the memory under preset buttons from [1] to [6].  
Use manual or seek tuning to find a station.  
1
Press and hold one of the preset buttons  
2
from [1] to [6] until the display blinks once.  
• Once set, the preset stations are sequentially scanned for 5  
seconds each.  
• Press one of the buttons from [1] to [6] to stop sequentially  
Preset Number  
scan.  
Note: New stations overwrite existing saved stations.  
blinks once  
Note: New stations overwrite existing saved stations.  
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CQ-5250U  
12  
Tuning in a Weather Band Station  
Press [BAND] to select WB (Weather Band).  
1
Warning  
(a page 12)  
Any NOAA broadcast weather report, including current and  
forecasts, may not reflect your actual weather conditions at  
your exact time and location. You should always pay  
attention to your actual weather conditions to make safe  
decisions accordingly.  
Press any of the buttons [1] to [6] to monitor  
the preset station.  
2
Note: The weather band (CH1-6) has been preset. CH7 is  
selected by pressing [}] or [{].  
Weather Band Stations  
National Weather Radio Broadcasts from over 380 Iocations  
throughout the U.S. on seven VHF/FM frequencies.  
Weather Band Frequency (channel) Number  
Tune to weather band to receive continuous weather  
information 24 hours a day on one of the following frequencies.  
1. 162.550 MHz  
2. 162.400 MHz  
3. 162.475 MHz  
4. 162.425 MHz  
5. 162.450 MHz  
6. 162.500 MHz  
7. 162.525 MHz  
Weather Band Frequency  
Occasionally the frequency of an existing or planned station  
must be changed because of unexpected radio frequency  
interfere with adjacent NOAA weather Radio Stations and/or  
with other Government or commercial Operations within the  
area. If you have a question concerning NOAA Weather Radio,  
please contact your nearest National Weather Service Office.  
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13  
CQ-5250U  
CD/MP3/WMA Player  
Cautions  
¡
Do not insert a disc when the  
indicator lights.  
¡ Refer to the section on “Notes on MP3/WMA”. (a page 30)  
¡ This unit does not support a MIX mode CD (a CD containing  
both CD-DA and compressed audio data). In case of using  
such a CD, problems may occur such as anacoustic play-  
back.  
¡ This unit does not support 8 cm {3"} discs.  
¡ Do not use irregularly shaped discs. (a page 32)  
¡ Do not use discs that have a seal or label attached.  
¡ Do not insert foreign matter into the disc slots.  
¡ Refer to the section on “Notes on CD-Rs/RWs”  
(a page 32).  
Pause  
Disc loading/ejection  
Press [BAND] (  
Press again to cancel.  
).  
5
/
h
Loading  
Load a disc in with the printed side facing up.  
Notes:  
• The power will be turned on automatically when a disc is loaded.  
• Playback will start automatically after the player recognized the  
loaded disc as an ordinary music CD or MP3/WMA disc.  
Ejection  
Press [u] to eject the disc.  
Display change  
(DISC)  
indicator  
(Repeat)/  
indicator  
(Random)/  
(a page 15)  
Text Scroll  
Scan, Repeat, Random (a page 15)  
Track/File selection  
[FILE  
]: Next track/file  
]: Preceding track/file (press twice)  
d
s
[FILE  
Note: Hold down for fast forward/reverse.  
Folder selection (MP3/WMA)  
[FOLDER }]: Next folder  
[FOLDER {]: Preceding folder  
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CQ-5250U  
14  
Display change  
Press [DISP] to change the display.  
Notes:  
¡ For scrolling text, press [3] (SCROLL).  
¡ “NO TEXT” is displayed when there is no information on the disc.  
CD-DA  
MP3/WMA  
Track number/  
Play time  
Folder number/File  
number  
Disc title*  
Track title*  
Clock  
Play time  
Folder name/  
Album*  
File name/  
Title, artist*  
* CD TEXT Display  
Disc title and Track title name are displayed.  
Clock  
* ID3 Tag ON/OFF  
Hold down [3] (SCROLL) for more than 2 seconds.  
TAG ON: album title and song title/artist name are displayed.  
TAG OFF: folder name/file name are displayed. (Default)  
Scan, Repeat, Random  
Scan play  
Random play  
All the available tracks/files are played in a random sequence.  
The first 10 seconds of each track/file is played in sequence.  
Press [4] (SCAN). Track/file number blinks.  
Press [6] (RANDOM).  
lights.  
Press again to cancel.  
Press again to cancel.  
Folder random play (MP3/WMA)  
Folder scan play (MP3/WMA)  
All the available files in current folder are played in a random  
From the next folder, the first 10 seconds of the first file in each  
folder is played in sequence.  
sequence.  
Hold down [6] (RANDOM) for more than 2 seconds.  
,
Hold down [4] (SCAN) for more than 2 seconds.  
lights and folder number blinks.  
lights.  
Hold down again to cancel.  
Hold down again to cancel.  
Repeat play  
The current track/file is repeated.  
Press [5] (REPEAT).  
lights.  
Press again to cancel.  
Folder repeat play (MP3/WMA)  
The current folder is repeated.  
Hold down [5] (REPEAT) for more than 2 seconds.  
lights.  
,
Hold down again to cancel.  
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15  
CQ-5250U  
USB (MP3/WMA)  
Compatible USB devices  
Cautions  
¡ USB Mass Storage Class  
¡ Do not connect a USB device directly to this unit. If a USB  
device is connected directly to this unit and an accident  
occurs, or if the brakes are applied suddenly, the driver or  
passenger may bump into the USB device and may be  
injured.  
For details as to whether your USB memory/USB Audio is  
compatible with USB Mass Storage Class, please contact  
the USB memory/USB Audio manufacturer.  
¡ USB Standard Compatibility 1.1/2.0 Full Speed  
¡ File System FAT12/16/32  
¡ Connect your USB device to your car audio using a stan-  
dard USB extension cable (5 m or less).  
¡ Maximum current less than 500 mA  
¡ Capacity less than 4 GB (1 partition)  
¡ Position the USB device and USB extension cable so that  
they do not interfere with your driving.  
¡ Do not connect any USB device other than a USB memory  
or a USB audio player. Do not connect multiple USB  
devices to the USB connector. Supplying power to multi-  
ple USB devices from the connector could cause over-  
heating and smoking.  
Pause  
USB device connection  
Press [BAND] (  
).  
5
Open the USB connector cover and connect a USB device to this  
/
h
unit.  
Press again to cancel.  
Notes:  
¡ When connecting (disconnecting) a USB device, turn down  
the volume of the unit.  
¡ When connecting a USB device, make sure the connector is  
pushed all the way into the socket.  
indicator  
Display change  
(a page 17)  
(Repeat)/  
indicator  
(Random)/  
lights when a USB  
device is loaded  
Text Scroll  
File selection  
[FILE  
]: Next file  
]: Preceding file (press twice)  
d
s
Scan, Repeat, Random (a page 17)  
[FILE  
Note: Hold down for fast forward/reverse.  
Folder selection  
[FOLDER }]: Next folder  
[FOLDER {]: Preceding folder  
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CQ-5250U  
16  
Notes:  
¡ Refer to the section on “Notes on MP3/WMA”. (a page 30)  
¡ Do not leave the USB device for long periods of time in places inside the car where the temperature rises too high.  
¡ This unit may not operate correctly if a cable other than a USB standard cable is used.  
¡ To prevent dirt and dust from adhering to the USB connector, close the cover of this unit when not in use.  
¡ Back up any important data beforehand. We cannot accept responsibility for any lost data.  
¡ The use of USB devices that contain data files other than MP3/WMA format is not recommended.  
¡ A file with a play time exceeding 1 000 minutes will not play correctly to the end of the track.  
¡ Playback or display may not be possible depending on the type of USB device or the condition of the recording.  
¡ Depending on the connected USB memory, the order in which the files are played back may differ from the order in which the  
files were stored.  
¡ Connection of an iPod to the USB connector of this unit is not supported.  
Display change  
Scan, Repeat, Random  
Press [DISP] to change the display.  
Notes:  
Scan play  
The first 10 seconds of each file is played in sequence.  
¡ For scrolling text, press [3] (SCROLL).  
¡ “NO TEXT” is displayed when there is no information on the  
USB device.  
Press [4] (SCAN). File number blinks.  
Press again to cancel.  
Folder scan play  
Folder number/  
File number  
From the next folder, the first 10 seconds of the first file in each  
folder is played in sequence.  
Hold down [4] (SCAN) for more than 2 seconds.  
lights and folder number blinks.  
Hold down again to cancel.  
Play time  
Repeat play  
The current file is repeated.  
Press [5] (REPEAT).  
lights.  
Press again to cancel.  
Folder name/ Album*  
Folder repeat play  
The current folder is repeated.  
Hold down [5] (REPEAT) for more than 2 seconds.  
,
lights.  
File name/  
Title, artist*  
Hold down again to cancel.  
Random play  
All the available files are played in a random sequence.  
Press [6] (RANDOM).  
Press again to cancel.  
lights.  
Clock  
Folder random play  
All the available files in current folder are played in a random  
sequence.  
Hold down [6] (RANDOM) for more than 2 seconds.  
* ID3 Tag ON/OFF  
Hold down [3] (SCROLL) for more than 2 seconds.  
TAG ON: album title and song title/artist name are displayed.  
TAG OFF: folder name/file name are displayed. (Default)  
,
lights.  
Hold down again to cancel.  
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17  
CQ-5250U  
Installation  
WARNING  
This installation information is designed for experienced installers and is not intended  
for non-technical individuals. It does not contain warnings or cautions of potential dan-  
gers involved in attempting to install this product.  
Any attempt to install this product in a vehicle by anyone other than a qualified installer  
could cause damage to the electrical system and could result in serious  
personal injury or death.  
If your vehicle is equipped with air bag and/or anti-theft systems, specific procedures  
may be required for connection and disconnection of the battery to install this product.  
Before attempting installation of this electronic component, contact your vehicle dealer  
or manufacturer to determine the required procedure and strictly follow their instructions.  
FAILURE TO FOLLOW THE PROCEDURE MAY RESULT IN THE UNINTENDED DEPLOY-MENT  
OF AIR BAGS OR ACTIVATION OF THE ANTI-THEFT SYSTEM RESULTING IN DAMAGE TO  
THE VEHICLE AND PERSONAL INJURY.  
Dashboard Specifications  
Overview  
This product should be installed by a professional.  
However, if you plan to install this product yourself, your first step  
is to decide where to install it. The instructions in these pages will  
guide you through the remaining steps:  
(Please refer to the “WARNING” statement above.)  
THICKNESS  
MIN. 4.75 mm {3/16}  
MAX. 5.56 mm {7/32}  
• Identify and label the car wires.  
• Connect the vehicle wires to the wires of the power connector.  
• Install the unit in the dashboard.  
53 mm {2-3/32}  
• Check the operation of the unit.  
182 mm {7-5/32}  
If you encounter problems, please consult your nearest profes-  
sional installer.  
Caution  
This unit operates with a 12 V DC negative ground auto battery  
system only. Do not attempt to use it in any other system.  
Doing so could cause serious damage.  
Before you begin installation, look for the item which is packed  
with your unit.  
Installation Hardware…Needed for in-dash installation.  
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CQ-5250U  
18  
Preparation  
Installation Hardware  
No.  
Item  
Diagram Q’ty  
Warning  
q
Mounting Collar*  
1
If your vehicle is equipped with air bag and/or anti-theft sys-  
tems, specific procedures may be required for connection and  
disconnection of the battery to install this product.  
w
e
r
t
y
u
i
Plain washer (5 mmø)  
Spring Washer (5 mmø)  
Hex. Nut (5 mmø)  
2
2
2
1
1
1
2
Before attempting installation of this electronic component,  
contact your vehicle dealer or manufacturer to determine the  
required procedure and strictly follow their instructions.  
FAILURE TO FOLLOW THE PROCEDURE MAY RESULT IN THE  
UNINTENDED DEPLOYMENT OF AIR BAGS OR ACTIVATION  
OF THE ANTI-THEFT SYSTEM RESULTING IN DAMAGE TO  
THE VEHICLE AND PERSONAL INJURY.  
Rear Support Strap  
• Disconnect the cable from the negative (–) battery terminal (see  
warning and caution below).  
Hex. Bolt  
(5 mmø × 25 mm)  
• Remove Mounting Collar q from the main unit temporarily,  
which are already mounted at shipment.*  
Toothed Lock Washer  
(5 mmø)  
Removal Tool  
(U-shaped)  
Caution  
Various settings that have been stored in the memory in other  
on-board equipment (vehicle navigation etc.) may be lost if the  
battery terminals are disconnected.  
Therefore, we recommend to make a record of or to back up  
the settings before disconnecting the terminals.  
After completing installation of the main unit, set the equip-  
ment again according to the record.  
• Unit should be installed in a horizontal position with the front  
end up at a convenient angle, but not more than 30˚.  
0 – 30°  
Dashboard Installation  
Installation Opening  
This unit can be installed in any dashboard having an opening as  
shown below. The dashboard should be 4.75 mm {3/16”} – 5.56  
mm {7/32”} thick in order to be able to support the unit.  
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19  
CQ-5250U  
Installation (continued)  
Mounting and removing the Main Unit  
Mounting Procedures (When using Mounting Collar q)  
The included Mounting Collar q is designed specially for this unit. Do not use it to attach any other model.  
Insert Mounting Collar q into the  
dashboard, and bend the mounting  
tabs out with a screwdriver.  
1
The tabs to be bent vary depending on  
the vehicle. To securely install the  
unit, fully bend a number of the tabs  
so that there is no rattling.  
Example:  
Tab  
q Mounting  
Collar  
Power Connector  
Mounting Holes  
Mounting Bolt  
Establish the rear connection of the unit.  
After fixing Power Connector, fix the rear of the  
unit to the vehicle body by either method (a) or (b)  
shown in the next page.  
2
3
Mounting springs (C)  
After installation reconnect the negative  
(–) battery terminal.  
Engage the Mounting  
Springs (C) in the  
mounting holes of  
the Mounting Collar  
q firmly.  
Mounting  
Hole  
Mounting Spring  
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CQ-5250U  
20  
Method for Fixing the Rear of the Unit  
(b) Using the rubber cushion (option)  
(a) Using the rear support strap t  
Fire Wall of Vehicle  
wPlain Washer  
Rear support bracket  
(provided on the vehicle)  
yHex. Bolt  
(5 mmø x 25 mm)  
Rubber cushion (option)  
eSpring Washer  
rHex. Nut  
uToothed Lock Washer  
rHex. Nut (5 mmø)  
eSpring Washer  
Mounting bolt  
(5 mmø)  
wPlain Washer  
q Mounting collar  
tRear Support Strap  
Mounting Bolt (5 mmø)  
qMounting Collar  
To Remove the Unit from the vehicle's dashboard  
Insert each Removal Tool i and pull.  
i Removal Tool  
(U-shaped)  
Note: Do not lose Removal Tools. They will be needed to remove the unit from the vehicle's dashboard.  
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21  
CQ-5250U  
Electrical Connections  
Caution  
• This wiring information is for experienced technical individual, for safety reason, please your dealer wire this connection.  
• This product is designed to operate with a 12 V DC, negative ground battery system.  
• To prevent damage to the unit, be sure to follow the connection diagram below.  
• Do not insert the power connector into the unit until the wiring is completed.  
• Be sure to insulate any exposed wires from a possible short-circuit from the vehicle chassis. Bundle all cables and keep cable  
terminals free from touching any metal parts.  
• Remember, if your vehicle has a drive computer or a navigation computer, the data of its memory maybe erased when the bat-  
tery terminals are disconnected.  
Wiring Diagram  
10 12 14 16  
9
7
11 13 15  
CD Receiver  
CQ-5250U  
5
3
1
8
6
4
2
Antenna  
(Rear Side)  
Detail of power connector  
NO.  
1
2
3
4
5
6
7
8
FUNCTION  
BATTERY +12 V  
GROUND  
ŔŔŔŔ  
ŔŔŔŔ  
ŔŔŔŔ  
POWER +12 V ACC 14  
ŔŔŔŔ  
ŔŔŔŔ  
NO.  
9
10  
11  
12  
13  
FUNCTION  
Power Connector  
REAR SP R (–)  
REAR SP R (+)  
FRONT SP R (–)  
FRONT SP R (+)  
FRONT SP L (–)  
FRONT SP L (+)  
REAR SP L (–)  
REAR SP L (+)  
Ĵ
The power connector does not come  
along with the unit. If need, please  
consult your dealer.  
15  
16  
Accessory Power(ACC)  
(+12 V DC, negative ground  
only)  
(Red)  
ACC  
Ground Lead  
(Connect to a clean, bare  
metallic part of your vehicle)  
(Black)  
Ground  
Battery  
(Yellow)  
Battery Lead  
(Connect to vehicle battery)  
(Orange)  
Illumination  
Illumination Lead  
(Not used)  
(Violet/Black)  
(Gray/Black)  
(white)  
(Gray)  
(Green)  
(Violet)  
(Green/Black)  
(White/Black)  
Left Speaker  
(Front)  
Right Speaker  
(Front)  
Left Speaker  
(Rear)  
Right Speaker  
(Rear)  
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CQ-5250U  
22  
Troubleshooting  
If You Suspect Something Wrong  
Check and take steps as described below.  
Warning  
¡ Do not use the unit in an irregular condition, for  
example, without sound, or with smoke or a foul  
smell, which can cause ignition or electric shock.  
Immediately stop using the unit and consult your  
dealer.  
If the described suggestions do not solve the problem, it is  
recommended to take the unit to your nearest authorized Panasonic  
Servicenter. The product should be serviced only by qualified personnel.  
Please refer the checking and the repair to professionals. Panasonic  
shall not be liable for any accidents arising out of neglect of checking the  
unit or your own repair after your checking.  
Never take measures especially for those other than indicated by ital-  
ic letters in “Possible Solution” described below because those are  
too dangerous for users to handle themselves.  
¡ Never try to repair the unit by yourself because it is  
dangerous to do so.  
Common  
Possible cause  
Possible solution  
Problem  
a
The power cord (battery, power and ground) is connected in the wrong way.  
a Check the wiring.  
No power to the unit  
Fuse blows out.  
a Eliminate the cause of fuse blowout and replace the fuse with new one.  
Consult your dealer.  
MUTE is set to ON.  
a Set MUTE to OFF.  
There is contact between the external mute lead and the chassis.  
a Connect the external mute lead correctly. If the lead is unused, insulate it.  
Sound is not generated.  
The wiring of speaker lines are not correct, or a break or poor contact arises.  
a Check the wiring in accordance with the wiring diagram.  
There is an electromagnetic-wave generator such as a cellular phone near the unit or  
its electrical lines.  
a Keep an electromagnetic-wave generator such as a cellular phone away from  
the unit and the wiring of the unit. In case that noise cannot be eliminated  
due to the wiring harness of the car, consult your dealer.  
Noise  
The contact of the ground lead is poor.  
a Make sure that the ground lead is connected to an unpainted part of the chas-  
sis securely.  
Alternator noise comes from the car.  
a Change the wiring position of the ground lead.  
a Mount a noise filter on the power supply.  
Noise is made in step with  
engine revolutions.  
Some operations are not executable in particular modes such as menu mode.  
a Read the operating instructions carefully and cancel the mode. If the unit is  
Some operations are not  
executable.  
still out of order, consult your dealer.  
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23  
CQ-5250U  
Troubleshooting (continued)  
BALANCE/FADER setting is not appropriate.  
a Readjust BALANCE/FADER.  
No sound from speaker(s)  
There is a break, a short circuit, poor contact or wrong wiring regarding the speaker  
wiring.  
a Check the speaker wiring.  
The speaker channels are  
reversed between right and  
left.  
The speaker wiring is confused between right and left.  
a Perform the speaker wiring in accordance with the wiring diagram.  
The sound field is not clear in  
the stereo mode. Central  
sound does not settled.  
The plus and minus terminals at right and left channels of speakers are connected  
reversely.  
a Perform the speaker wiring in accordance with the wiring diagram.  
The safety device works.  
a Consult your dealer, or your nearest Panasonic Servicenter.  
The power fails  
unintentionally.  
Radio  
Antenna installation or wiring of antenna cable is faulty.  
a Check whether the antenna mounting position and its wiring are correct. In  
addition, check to see whether the antenna ground is securely connected to  
the chassis.  
Poor reception or noise  
No power is supplied to the antenna amplifier (when using a film antenna, etc.).  
a Check the wiring of the antenna battery lead.  
The number of receivable stations is less than 6.  
a Move to an area where receivable stations number is maximum, and try pre-  
The number of auto preset  
stations is less than 6.  
setting.  
The contact of the battery lead is poor, or the battery lead is not always powered.  
a Make sure that the battery lead is connected securely, and preset stations  
Preset stations cannot be  
stored.  
again.  
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CQ-5250U  
24  
CD  
The disc is inserted upside down.  
a Insert a disc correctly.  
No playback or disc ejected  
There is a flaw or foreign material on the disc.  
a Remove the foreign material, or use a flawless disc.  
There is a flaw or foreign material on the disc.  
a Remove the foreign material, or use a flawless disc.  
Sound skipping or noise  
The unit is not sufficiently secured.  
a Secure the unit to the console box.  
Sound skipping due to  
vibration  
The unit is tilted at over 30˚ in the front-to-end direction.  
a Make the angle 30˚ or less.  
Something such as a peeled label obstructs the disc coming out.  
a Consult your dealer.  
Disc unejectable  
The microcontroller in the unit operates abnormally due to noise or other factors.  
a Unplug the power cord and plug it again. In case the unit is still out of order,  
consult your dealer.  
MP3/WMA  
The disc has unplayable formatted data.  
a Check the file format.  
No playback or disc ejected  
The playability of some CD-Rs/RWs may depend on the combination of media,  
recording software and recorder to be used even if these CD-Rs/RWs are playable  
on other devices such as a PC.  
The CD-R/RWs that are  
playable on other devices are  
not playable on this unit.  
a Make CD-R/RWs in different combination of media, recording software and  
recorder after referring to the description about the compressed audio player.  
There is a flaw or foreign material on the disc.  
a Remove the foreign material, or use a flawless disc.  
Sound skipping or noise  
Playing VBR (Variable Bit Rate) files may cause sound skipping.  
a Play Non-VBR files.  
Note: Refer to “Notes on MP3/WMA”. (a Page 30)  
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25  
CQ-5250U  
Troubleshooting (continued)  
USB  
The USB device and USB extension cable are not connected correctly.  
a Connect the USB device and USB extension cable correctly.  
There is no music stored in a format that is supported on this unit.  
a Check if there is any music data that can be played stored on the USB device.  
Music is not played back even  
if the USB device is  
connected.  
The file system of the USB device is not compatible with this unit.  
a Use a USB device with a FAT12/16/32 file system.  
The current consumption of the USB device exceeds 500 mA.  
a Use a USB device with a current consumption lower than 500 mA.  
A USB hub is connected.  
a Do not use a USB hub.  
“READING” is displayed but  
music is not played back.  
Too many recorded folders/files exist.  
a When there are too many recorded folders/files, it may take a long time to  
read all of the files.  
Product Servicing  
If the suggestions in the charts do not solve the problem, we recommend that you take it to your nearest authorized Panasonic  
Servicenter. The product should be serviced only by a qualified technician.  
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CQ-5250U  
26  
Error Display Messages  
CD/MP3/WMA  
Possible cause  
Possible solution  
a
Display  
The disc is dirty, or is upside down.  
a Check the disc.  
The disc has scratches.  
a Check the disc.  
No operation by some cause.  
a Unplug the power cord and plug it again. In case the unit is still out of order,  
consult your dealer.  
The player for some reason cannot read the file you are trying to play. (File recorded  
in an unsupported file system, compression scheme, data format, file name exten-  
sion, damaged data, etc.)  
a Select a file that the player can read. Check the type of data recorded on the  
disc. Create a new disc if necessary.  
A WMA file can be copyrighted.  
a The file protected by copyright is not playable.  
No disc in the player.  
a Insert disc into the disc slot.  
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27  
CQ-5250U  
Error Display Messages (continued)  
USB  
A USB device is not connected or the connected device cannot be recognized.  
a Use the type of USB memory that is suitable for this unit.  
Your USB device has no playable file.  
a Download playable file to your USB device.  
A USB device the capacity of which exceeds the acceptable current was connected.  
For some reason, an over-current was detected.  
a Use a USB device that has a consumption current of less than 500 mA.  
a Switch the source, and select the USB mode again.  
a Check that the USB connector section is not dirty, and that there is no foreign  
material.  
No operation by some cause.  
a Turn off the power and turn on the power again, or turn the key to the ACC OFF  
position and turn the key to ACC ON position again. If this does not solve the  
problem, unplug the power cord and plug it in again. In case the unit is still  
out of order, consult your dealer.  
The player for some reason cannot read the file you are trying to play. (File recorded  
in an unsupported file system, compression scheme, data format, file name  
extension, damaged data, etc.)  
a Confirm that the USB extension cable is firmly connected, and reconnect if  
not. Select a file that the player can read. Check the type of data stored in the  
USB device. Format the USB device if necessary.  
A WMA file can be copyrighted.  
a The file protected by copyright is not playable.  
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CQ-5250U  
28  
Maintenance  
Cleaning this Unit  
Your product is designed and manufactured to ensure a  
minimum of maintenance. Use a dry soft cloth for routine  
exterior cleaning. Never use benzine, thinner or other sol-  
vents.  
To remove stubborn stains  
1 Moisten the soft cloth in dishwashing  
soap diluted with water and wring well.  
2 Wipe lightly. Go over the same surface  
with a dry cloth.  
Alcohol  
Alcohol  
Pesticide  
Pesticide  
Note:  
¡Since there is the possibility of water drops getting  
inside of the unit, do not directly apply cleanser to the  
surface.  
Wax  
Thinner  
Wax  
Thinner  
¡Do not scratch the screen with your nails or other hard  
objects. The resulting scratches or marks will obscure  
the images.  
Benzine  
Benzine  
Caution  
¡If water drops or similar wet substances get inside the  
unit, it may cause a malfunction.  
Caution  
This product is designed without a fuse inside due to fuses already exist in your vehicle. We would recommend to use fuses  
of the specified rating (15 A). Using fuses that exceed the prescribed capacity could cause this product to start smoking,  
ignite or other malfunction.  
If your vehicle is without the fuse or a circuit breaker to protect this unit, please your dealer add the specified fuse 15 A or a  
circuit breaker at the BATTERY lead of your vehicle's harness. Please see page 22 to find out where "BATTERY +12V" is for  
your dealer adding the fuse or the circuit breaker.  
Refer fuse replacement to qualified service personnel. When the fuse blows out, eliminate the cause and have it replaced  
with the fuse prescribed for this unit by a qualified service engineer. Incorrect replacement of the fuse may lead to smoke,  
fire, and damage to the product.  
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29  
CQ-5250U  
Notes on MP3/WMA  
Both of MP3 (MPEG Audio Layer-3) and WMA (Windows Media™ Audio) is a format for compressed audio file. These formats allow  
users to save all the files contained in approximately 10 pieces of existing CDs on one piece of CD-R/RW.  
Note: Each of encoding software is not included with this unit.  
*MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson.  
Cautions as to compressed audio files  
Common  
MP3  
¡ High bit rate and high sampling frequency are recommended  
for high quality sounds.  
¡ It is recommended to set the bit rate to “128 kbps or more”  
and “fixed”.  
¡ Selecting VBR (Variable Bit Rate) is not recommended  
because playing time is not displayed properly and sound  
may be skipped.  
¡ The playback sound quality differs depending on the encoding  
circumstances. For details, refer to the user manual of your  
own encoding software and writing software.  
¡ Be sure to put an extension compatible with the format.  
WMA  
¡ It is recommended to set the bit rate to “64 kbps or more”  
and “fixed”.  
¡ Do not set the copy protect attribute on the WMA file to  
enable this unit to play back.  
Compression formats  
Compression method  
Bit rate  
VBR  
Yes  
Yes  
Yes  
Yes  
Sampling frequency  
32, 44.1, 48 kHz  
16, 22.05, 24 kHz  
8, 11.025, 12 kHz  
32, 44.1, 48 kHz  
MPEG 1 audio layer 3 (MP3)  
MPEG 2 audio layer 3 (MP3)  
MPEG 2.5 audio layer 3 (MP3)  
32 k – 320 kbps  
8 k – 160 kbps  
8 k – 160 kbps  
Windows Media Audio Ver. 2, 7, 8, 9* 64 k – 160 kbps  
* WMA 9 Professional/LossLess/Voice are not supported.  
Caution  
Never put an extension indicating compressed audio (such as “.mp3” and “.wma”) to files other than com-  
pressed audio files. This may not only produce noise from the speaker damage, but also damage your  
hearing.  
Cautions as to the display of this unit  
ASCII character set  
A to Z, a to z, digits 0 to 9, and the following symbols:  
(space) ! ” # $ % & ’ ( ) * + , - . / : ; < = > ? @ [ \ ] ˆ _ ` { | }  
~
Display Information  
¡ CD-TEXT  
Disc title  
¡ MP3 (ID3 tag)  
Album name,  
Title name/artist name  
Track title  
¡ MP3/WMA  
Folder name,  
File name  
¡ WMA (WMA tag)  
Album name,  
Title name/artist name  
Notes:  
¡ Characters may be garbled depending on encoding software  
to be used  
¡ Undisplayable characters and symbols will be converted into  
Displayable characters  
¡ Displayable length of file name/folder name: within 30 charac-  
ters. (Unicoded file and folder names are reduced by half in  
the number of displayable characters.)  
¡ Name files and folders in accordance with the standard of  
each file system. Refer to the instructions of writing software  
for details.  
an asterisk ( ).  
*
Windows Media, and the Windows  
logo are trademarks, or registered  
trademarks of Microsoft Corporation  
in the United States and/or other  
countries/regions.  
¡ ASCII character set and special characters in each language  
can be displayed.  
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CQ-5250U  
30  
Cautions as to compressed audio files  
Compressed audio file writing  
Folder selection order/file playback order  
CD-media/USB-device  
¡ Do not save an audio file (CD-DA file) and a compressed  
audio file on the same disc. Failure to observe this may  
result in difficulty in playing.  
Root Folder  
1
(Root Directory)  
¡ If compressed audio files formatted with two or more types  
are saved on the same disc, each format shall have a dif-  
ferent folder.  
¡ Do not write files other than compressed audio files.  
¡ Playability may depend on the combination of writing soft-  
ware and disc writer to be used.  
¡ This unit does not support the play list function.  
¡ Write files in a disc-at-once manner unless otherwise needed.  
¡ You can shorten the duration between data read and playback  
by decreasing the quantity of files or folders, or the depth of  
the hierarchy.  
2
q
Folder Selection  
4
e
r
1
8
In the order  
3
w
File Selection  
In the order  
5
6
q
y
8
t
y
7
Tree 1  
Tree 2  
Tree 3  
Tree 4  
Tree 8  
(Max.)  
Supported file systems  
CD-media  
ISO 9660 Level 1/Level 2, Apple Extension to ISO 9660,  
Joliet, Romeo  
Note: Apple HFS, UDF 1.50, Mix CD and CD Extra are not  
Maximum number of files/folders  
¡ Maximum number of files  
CD-media: 999  
USB device: 65 535  
¡ Maximum number of files in one folder  
CD-media: 255  
supported.  
USB-device  
File system is FAT12/16/32  
USB device: 999  
¡ Maximum depth of trees: 8  
¡ Maximum number of folders: 255 (Root folder is included.)  
Notes:  
¡ This unit counts the number of folders irrespective of the  
presence or absence of a compressed audio file.  
¡ If the selected folder does not contain any compressed audio  
file, the nearest compressed audio file in the order of playback  
will play.  
¡ Playback order of this unit may be different from that of other  
compressed audio players even if the same disc is used  
¡ “ROOT” appears when displaying the root folder name.  
Common  
Copyright  
It is prohibited by copyright laws to copy, distribute and deliver  
copyrighted materials such as music without the approval of  
copyright holder except enjoying yourself personally.  
No warranty  
Above description complies with our investigations as of  
December 2007. It has no warranty for reproducibility and  
displayability of MP3/WMA.  
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31  
CQ-5250U  
Notes on Discs  
How to hold the disc  
Disc insert  
¡Do not touch the underside of the disc.  
¡Do not scratch the disc.  
¡Do not bend disc.  
The surfaces of new discs tend to be slippery. Therefore,  
when using such a disc for the first time, it may not load  
satisfactorily even when it has been inserted into the unit.  
At a time like this, insert the disc into the unit as far as it  
will go until it is loaded properly.  
¡When not in use, keep disc in the case.  
Printed side  
¡When inserting a disc into or ejecting and removing it  
from the unit, insert it straight in or eject and remove  
it straight out in parallel with the unit. Otherwise, the  
disc may be scratched or marked in the process.  
¡When inserting a disc, do not put one disc on another.  
Failure to observe this may cause the discs to be  
jammed.  
Unusable discs  
Do not use discs that fit any of the descriptions given  
below. Using these discs may damage the discs or  
cause the unit to malfunction.  
Do not leave discs in the following places:  
¡Direct sunlight  
¡Special discs in a shape which is not round  
¡Near car heaters  
¡Dirty, dusty and damp areas  
¡On seats and dashboards  
¡Partly or wholly transparent disc  
Disc cleaning  
Use a dry, soft cloth to wipe from the center outward.  
Do not attach any seals or labels to your discs.  
Do not write on the disc label in a heavy pen or ballpoint  
pen.  
Wholly transparent disc*  
Partly transparent disc  
*Wholly semi-transparent disc may not be played back.  
¡Discs with adhered labels, etc. on them  
<Correct>  
<Wrong>  
Notes on CD-Rs/RWs  
Disc with adhered stickers Labels created by a printer  
or tape  
¡You may have trouble playing back some CD-R/RW  
discs recorded on CD recorders (CD-R/RW drives),  
either due to their recording characteristics or dirt, fin-  
gerprints, scratches, etc. on the disc surface.  
¡CD-R/RW discs are less resistant to high temperatures  
and high humidity than ordinary music CDs. Leaving  
them inside a car for extended periods may damage and  
make playback impossible.  
Protective films or sheets  
Disc accessories (stabiliz-  
ers, etc.)  
¡Damaged or deformed discs  
¡The unit may not successfully playback a CD-R/RW that  
was made by the combination of writing software, a CD  
recorder (CD-R/RW drives) and a disc if they are incom-  
patible with one another.  
¡This player does not play CD-R/RW discs if the session  
is not closed.  
Shoddily made discs  
Discs with cracks,  
scratches or parts missing  
¡Be sure to observe the handling instructions of CD-  
R/RW discs.  
¡This player does not play CD-R/RW discs which contain  
other than CD-DA or MP3/WMA data.  
Discs with burrs  
Please remove the burrs  
before use.  
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CQ-5250U  
32  
Specifications  
General  
Power Supply:  
12 V DC (11 V-16 V) test Voltage 14.4 V, Negative ground  
Less than 2.5 A (CD mode, 0.5 W 4-speaker)  
45 W x 4 channels at 400 Hz, Volume Control maximum  
Current consumption:  
Maximum Power Output:  
Tone adjustment range:  
Bass:  
12 dB at 100 Hz  
Treble:  
Power Output:  
12 dB at 10 kHz  
18 W per channel into 4 ohms, 40 to 30 000 Hz at 3 % THD  
Suitable Speaker Impedance:  
Dimensions (W x H x D):  
Weight:  
4-8 Ω  
15  
1
178 mm x 50 mm x 155 mm {7x 1 /16 x 6 /8}  
1.2 kg {2.65 lbs. 42.3 oz.}  
USB connector  
USB standard compatibility  
File system  
1.1/2.0 full speed  
FAT12/16/32  
Maximum supply current  
Playable audio format  
Recommended capacity  
Front AUX input  
500 mA  
MP3/WMA  
Less than 4 GB (1 partition)  
Input impedance  
Allowable external input  
Connector  
10 kΩ  
2.0 V  
3.5 mmø Stereo mini pin  
FM Stereo Radio  
Frequency Range:  
Useable Sensitivity:  
50 dB Quieting Sensitivity:  
Frequency Response:  
Alternate Channel Selectivity:  
Stereo Separation:  
87.9 MHz –107.9 MHz  
12 dBf. (1.1 µV/ 75 , S/N 30 dB)  
17 dBf. (1.8 µV/ 75 )  
30-15 000 Hz 3 dB  
75 dB  
35 dB at 1 kHz  
Signal/Noise Ratio:  
70 dB (Mono)  
AM Radio  
Frequency range:  
Usable sensitivity:  
530 kHz–1 710 kHz  
28 dB/µV (S/N 20 dB)  
Weather Band Radio  
Frequency range:  
Usable sensitivity:  
Signal/Noise Ratio (40 dB/µV):  
162.400 MHz –162.550 MHz  
3 dB/µV (S/N 20 dB)  
50 dB  
CD Player  
Sampling Frequency:  
DA Converter:  
Error Correction System:  
Pick-Up Type:  
Light Source:  
Wavalength:  
8 times oversampling  
1 bit/4 DAC System  
Spot size detection method  
3-beam  
Semiconductor laser  
790 nm  
Frequency Response:  
Signal to Noise Ratio:  
Wow and Flutter:  
Channel Separation:  
20 - 20,000 Hz ( 1 dB)  
85 dB  
Below measurable limits  
75 dB  
Above specifications comply with EIA standards.  
Note: Specifications and the design are subject to modification  
without notice due to improvements in technology.  
Power Output:  
18 W RMS x 4 Channels at 4 and 1%  
THD+N  
Signal to Noise Ratio:  
85 dBA (reference: 1 W into 4 )  
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33  
CQ-5250U  
Memorandum  
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CQ-5250U  
34  
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35  
CQ-5250U  
Panasonic Consumer  
Electronics Company,  
Division of Panasonic  
Corporation of North America  
One Panasonic Way, Secaucus,  
New Jersey 07094  
©2008 Matsushita Electric Industrial Co., Ltd. YFM264C108CA PTW0308-2058  
Printed in China  
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