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27

Troubleshooting

If you have any trouble using the CD receiver, look for a solution in this section.

Can’t turn on the CD receiver.

• Make sure that the power cord is properly plugged into the wall outlet (see page 15).
• Make sure that the power cord is properly plugged into the CD receiver’s AC INLET (see page 15).
• Unplug the power cord from the wall outlet, wait 30 minutes or more, then plug it in again.

The CD receiver turns off unexpectedly.

• If the sleep timer has been set and the SLEEP indicator is shown on the display, the CD receiver will turn off 

automatically after a specified period (see page 26).

• The CD receiver will automatically enter standby mode when Auto Standby has been set and launches (see page 24).

There’s no sound.

• Make sure the CD receiver’s volume is not set too low (see page 16).
• Make sure the correct input source is selected (see page 16).
• Make sure the CD receiver is not muted (see page 16).
• Check all connections and correct as necessary (see pages 13 to 15).
• While headphones are connected, the speakers output no sound (see page 16).
• If there’s no sound from an external device connected to LINE IN, check whether the external device’s audio output 

level (volume) might be too low.

The sound quality is not good.

• Make sure the speaker cables are connected with the correct polarity (see page 13).
• Make sure all audio connecting 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 devices that emit high-intensity radio waves near the CD receiver, such as a cellular phone that’s being 

used to make a call, the CD receiver may output noise.

• The CD receiver’s precision drive mechanism may emit a faint hissing sound while reading discs during playback or 

when searching for tracks. You may be able to hear this noise in extremely quiet environments.

Audio output is intermittent when the CD receiver is subjected to vibration.

• The CD receiver is not a portable device. Use it in a location that’s not subject to shock or vibration.
• Make sure that the included cork floor pads are attached to the speakers (see page 6).

Headphones output is intermittent or there’s no sound.

• This may be due to dirty contacts. Clean the headphones plug. See your headphones’ instruction manual for cleaning 

information. Also, make sure that the headphones cable is not broken or damaged.

Power

Audio

If you can’t resolve the issue yourself, try resetting the CD receiver before 
contacting your Onkyo dealer.

To reset the receiver to its factory defaults, turn it on and, while holding down 
the CD receiver’s stop [

2

] button, press the [

8

ON/STANDBY] button.

When the display indicates “RESET,” release the buttons. After a while, the 
CD receiver will enter standby mode.

Note that resetting the CD receiver will delete your radio presets and custom settings.

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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