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3

Precautions

1. Recording Copyright

—Unless it’s for personal use 

only, recording copyrighted material is illegal 
without the permission of the copyright holder.

2. AC Fuse

—The AC fuse inside the unit is not user-

serviceable. If you cannot turn on the unit, contact 
your Onkyo dealer.

3. Care

—Occasionally you should dust the unit all over 

with a soft cloth. For stubborn stains, use a soft cloth 
dampened with a weak solution of mild detergent and 
water. Dry the unit immediately afterwards with a 
clean cloth. Don’t use abrasive cloths, thinners, 
alcohol, or other chemical solvents, because they 
may damage the finish or remove the panel lettering.

4. Power

WARNING

BEFORE PLUGGING IN THE UNIT FOR THE 
FIRST TIME, READ THE FOLLOWING 
SECTION CAREFULLY.
AC outlet voltages vary from country to country. 
Make sure that the voltage in your area meets the 
voltage requirements printed on the unit’s rear panel 
(e.g., AC 230 V, 50 Hz or AC 120 V, 60 Hz).

The power cord plug is used to disconnect this unit 
from the AC power source. Make sure that the plug 
is readily operable (easily accessible) at all times.

For models with [POWER] button, or with both 
[POWER] and [ON/STANDBY] buttons:
Pressing the [POWER] button to select OFF mode 
does not fully disconnect from the mains. If you do 
not intend to use the unit for an extended period, 
remove the power cord from the AC outlet.

For models with [ON/STANDBY] button only:
Pressing the [ON/STANDBY] button to select 
Standby mode does not fully disconnect from the 
mains. If you do not intend to use the unit for an 
extended period, remove the power cord from the 
AC outlet.

5. Preventing Hearing Loss

Caution

Excessive sound pressure from earphones and 
headphones can cause hearing loss.

6. Batteries and Heat Exposure

Warning

Batteries (battery pack or batteries installed) shall 
not be exposed to excessive heat as sunshine, fire or 
the like.

7. Never Touch this Unit with Wet Hands

—Never 

handle this unit or its power cord while your hands 
are wet or damp. If water or any other liquid gets 
inside this unit, have it checked by your Onkyo 
dealer.

8. Handling Notes

• If you need to transport this unit, use the original 

packaging to pack it how it was when you 
originally bought it.

• Do not leave rubber or plastic items on this unit 

for a long time, because they may leave marks on 
the case.

• This unit’s top and rear panels may get warm 

after prolonged use. This is normal.

• If you do not use this unit for a long time, it may 

not work properly the next time you turn it on, so 
be sure to use it occasionally.

• When you’ve finished using this unit, remove all 

discs and turn off the power.

9. Installing this Unit

• Install this unit in a well-ventilated location.
• Ensure that there’s adequate ventilation all 

around this unit, especially if it’s installed in an 
audio rack. If the ventilation is inadequate, the 
unit may overheat, leading to malfunction.

• Do not expose this unit to direct sunlight or heat 

sources, because its internal temperature may 
rise, shortening the life of the optical pickup.

• Avoid damp and dusty places, and places subject 

to vibrations from loudspeakers. Never put the 
unit on top of, or directly above a loudspeaker.

• Install this unit horizontally. Never use it on its 

side or on a sloping surface, because it may cause 
a malfunction.

• If you install this unit near a TV, radio, or VCR, 

the picture and sound quality may be affected. If 
this occurs, move this unit away from the TV, 
radio, or VCR.

10. Moisture Condensation

Moisture condensation may damage this unit.

Read the following carefully:
Moisture may condense on the lens of the optical 
pickup, one of the most important parts inside this 
unit.
• Moisture condensation can occur in the following 

situations:
– The unit is moved from a cold place to a warm 

place.

– A heater is turned on, or cold air from an air 

conditioner is hitting the unit.

– In the summer, when this unit is moved from 

an air conditioned room to a hot and humid 
place.

– The unit is used in a humid place.

• Do not use this unit when there’s the possibility 

of moisture condensation occurring. Doing so 
may damage your discs and certain parts inside 
this unit.

If condensation does occur, unplug the power cord 
and leave the unit for two to three hours in the room 
temperature.

This unit contains a semiconductor laser system and is 
classified as a “CLASS 1 LASER PRODUCT”. So, to 
use this model properly, read this Instruction Manual 
carefully. In case of any trouble, please contact the store 
where you purchased the unit.
To prevent being exposed to the laser beam, do not try to 
open the enclosure.

CAUTION:

CLASS 1M VISIBLE AND INVISIBLE LASER 
RADIATION WHEN OPEN. DO NOT VIEW 
DIRECTLY WITH OPTICAL INSTRUMENTS.

Summary of Contents for CR-255

Page 1: ...it in Following the instructions in this manual will enable you to obtain optimum performance and listening enjoyment from your new CD Receiver System Please retain this manual for future reference G...

Page 2: ...aratus does not operate normally by following the operating instructions Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may resul...

Page 3: ...astic items on this unit for a long time because they may leave marks on the case This unit s top and rear panels may get warm after prolonged use This is normal If you do not use this unit for a long...

Page 4: ...e needs to be replaced the replacement fuse must approved by ASTA or BSI to BS1362 and have the same ampere rating as that indicated on the plug Check for the ASTA mark or the BSI mark on the body of...

Page 5: ...sconnecting cables 7 Microphone feedback The speakers contain powerful magnets Do not put metal items such as screwdrivers close to the speakers as they may be attracted toward the magnet causing inju...

Page 6: ...ably try replacing the batteries If you intend not to use the remote controller for a long time remove the batteries to prevent damage from leakage or corrosion Expired batteries should be removed as...

Page 7: ...ash Drive MP3 playback from USB flash drives Timer and Clock Programmable timer Sleep timer The alarm play function of the iPod iPhone can power on the CD receiver and switch the input to iPod iPhone...

Page 8: ...htness 16 Playing CDs Playing CDs 17 Playing CDs 17 Displaying CD Information 17 Selecting MP3 Files 18 Displaying MP3 Information 19 Random Playback 19 Repeat Playback 19 Playing Your iPod iPhone Pla...

Page 9: ...ious 7 PRESET e button 17 21 23 d Next 6 PRESET r button 17 21 23 e Stop 2 button 17 21 27 f Play Pause 1 3 button 17 18 24 g VOLUME buttons 16 21 h Headphones jack 16 i USB port 24 j Display k Disc t...

Page 10: ...MUTING indicator g Playback mode indicators h TIMER indicators i Tuning indicators j RDS indicator k FILE indicator l TRACK indicator m Message area n DISC TOTAL and REMAIN indicators a FM ANTENNA jac...

Page 11: ...17 21 23 5 4 TUNING e r 17 21 22 buttons f VOLUME buttons 16 21 g MENU button 21 h Arrow q w e r buttons and ENTER button i MODE button 18 22 j DIMMER button 16 k SHUFFLE button 19 21 l PLAYLIST q w b...

Page 12: ...um of 299 folders can be recognized on a single CD A maximum of 648 files can be recognized in a single folder Playback from USB Flash Drives MP3 files recorded on a USB flash drive can be played with...

Page 13: ...istatic agents etc Never use volatile chemicals such as benzine or paint thinner as they can impregnate the disc surface Connecting Speakers Connect the right speaker to the CD receiver s right R SPEA...

Page 14: ...M antenna well away from tall buildings preferably with a clear line of sight to your local FM transmitter Outdoor antenna should be located away from possible noise sources such as neon signs busy ro...

Page 15: ...nect the included power cord to any other device Doing so may cause malfunctions or accidents Do not unplug the power cord from the AC INLET while the other end of the cord is still connected to an AC...

Page 16: ...is set to standby You can connect a pair of stereo headphones 3 5 mm phone plug to the CD receiver s headphones jack for private listening Note Always turn down the volume before connecting your head...

Page 17: ...st forward or the Fast Reverse 5 button to fast reverse To remove the CD Press the CD receiver s 0 button to open the disc tray Information Displayed When Playback is Stopped Selecting Tracks To retur...

Page 18: ...an press the ENTER button to return to the upper level folder 3 Use the arrow q w buttons to select the MP3 files within the folder The name of the MP3 file inside the folder is displayed To select a...

Page 19: ...f MP3 files the same song might be played Random playback can be set when the input source is set to CD or USB 1 Press the SHUFFLE button until the RANDOM indicator appears 2 To start random playback...

Page 20: ...the display of the CD receiver If your iPod iPhone is not connected properly No Device appears Note To prevent damage to the Lightning connector do not twist or force your iPod iPhone into the dock a...

Page 21: ...ress the Next 6 button repeatedly to select subsequent tracks Fast Forward or Fast Reverse During playback press and hold the Fast Forward 4 button to fast forward or the Fast Reverse 5 button to fast...

Page 22: ...function you can automatically preset all of the FM radio stations available in your area in one go Presets make it easy to select your favorite stations and eliminate the need to tune the radio manu...

Page 23: ...he PRESET e button to select the previous preset Press the PRESET r button to select the next preset Tip If you press the remote controller s TUNER button while the CD receiver is on Standby it will t...

Page 24: ...is shipped from the factory the time display format is set to 24 hour time Set the current hour as it would appear in 24 hour time If you want to set the current hour as 12 hour time press the DISPLAY...

Page 25: ...vious display will reappear 3 Use the arrow q w buttons to select the source and then press ENTER You can select the following sources FM CD iPod USB LINE In the display TIMER and a number indication...

Page 26: ...nts Canceling the Sleep Timer To cancel the sleep timer press the SLEEP button repeatedly until Sleep Off appears Note If the timer turns the power on the SLEEP indication will light If you perform an...

Page 27: ...plugs are pushed in all the way see page 15 The sound quality can be affected by strong magnetic fields such as that from a TV Try moving any such devices away from the CD receiver If you have any de...

Page 28: ...ed to the iPod dock will be selected as a priority and the iPod iPhone connected to the USB port with the USB cable cannot be played Make sure your iPod iPhone is properly seated in the CD receiver s...

Page 29: ...e page 14 Move the CD receiver away from a nearby TV or computer Cars or airplanes can cause noisy interference The radio signal will be weakened if it has to pass through a concrete wall before reach...

Page 30: ...e display indicates when you press the CLOCK CALL button A power failure has occurred and the clock has stopped Set the clock again see page 24 Standby power consumption Charging will begin when you c...

Page 31: ...50 MHz 108 00 MHz Preset channel 30 Playable media CD and CD R CD RW music CDs and MP3 CDs Playable media USB Flash Drive MP3 Power supply AC 220 240 V 50 60 Hz Power consumption 30 W No sound power...

Page 32: ...m Unit 19 Building 6 Croxley Green Business Park Hatters Lane Watford WD18 8YH UK Tel 44 0 8712 00 19 96 Fax 44 0 8712 00 19 95 Unit 1033 10 F Star House No 3 Salisbury Road Tsim Sha Tsui Kowloon Hong...

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