After installing a software upgrade the unit no longer
recognises all of the information on the database
In order to synchronise the software upgrade with the hard drive
content, it may be necessary to rescan the database. If this does not
rectify the issue, reset the database, then rescan (refer to the
information on Data management in the 'Settings Menus' section of this
manual). This procedure will not remove or alter content on the hard
drive.
I have a large quantity of music on my PC, which the
640H is unable to recognise or scan
For larger music collections, please refer to the 'Content Management'
section in the 640H Networking Guides available for download on the
Cambridge Audio website.
My 640H is still making noises after I have put it into
standby
The unit is performing tasks such as background compression, file and
database management, and self checks. This is part of normal
operation, and will often occur for a few minutes after the unit is placed
in standby. If there is a large amount of music on the hard drive awaiting
compression, this procedure will take longer than usual.
For more frequently asked questions (FAQ’s), technical advice and
information on getting the most out of your 640H, please visit the
Cambridge Audio website:
www.cambridgeaudio.com/support.php
640H
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19
Despite our selection of the very highest quality components and
extensive testing regime the 640H, like all units using a hard disk drive,
is subject to occasional random failure. In the unlikely event of a hard-
drive failure, some or all of the music content stored on the 640H’s
hard-drive may be lost. It is therefore strongly recommended that all
music content is regularly backed up to another storage medium to
prevent lengthy re-ripping or transferring of content in this event.
Cambridge Audio cannot be held responsible for any consequential
damage caused by hard-drive failures.
There is no power
Ensure the AC power cord is connected securely.
Ensure the plug is fully inserted into the wall socket and is switched on.
Check fuse in the mains plug or adaptor.
The player will not read the disc
Check the disc is not loaded upside down.
Check that the disc is not too scratched or dirty.
There is no sound
Ensure that the amplifier is set correctly.
Check that the interconnects are inserted correctly.
The disc is skipping
Check that the disc is not too scratched or dirty.
Ensure the player is on a firm surface and not subject to vibrations.
There is a hum coming from the speaker
Ensure that all cable connections are secure.
The remote handset will not function
Check that the batteries have not expired.
Ensure that nothing is blocking the remote sensor.
Check the remote is in the correct mode - 640H, Amp or AV mode (see
the ‘Remote control’ section of this manual for more information).
There are no menus displayed on a connected monitor
The monitor/TV must be connected to the 640H before you turn on
power via the On/Off switch on the rear panel of the 640H.
The player will not burn tracks to disc
Ensure the CD is not scratched or dirty. The CD must also be blank and
the correct format for burning (CD-R and CD-RW).
The connected device is not accessible
Ensure the USB cable is connected securely to the portable device and
the 640H, and the USB has power.
The unit freezes
Allow a reasonable amount of time before switching the 640H Off on the
rear panel of the unit, as the 640H may still be processing a function.
The 640H is not connecting to a network
Double-check all the settings, restart the computers and the 640H in
your network and try again.
Troubleshooting
ENGLISH
