User manual

dCS 950 / 952 User Manual Manual for Software Version 6.2x
dCS Ltd 22
nd
May 2000
Manual part no: DOC0029526B1 Page 50 Document No: OS-MA-D0002-952.6B1
Contact dCS on + 44 1799 531 999 email to: [e-mail]
(inside the UK replace + 44 with 0) web site: www.dcsltd.co.uk
The unit fails to respond to the controls -
• While locking to a source or changing some settings (e.g. Filter), the
microcontroller inside the unit is busy and will not respond to new
commands for a few seconds.
• Short mains supply drop-outs may cause the microcontroller to lock up.
Switch off the unit, wait 10 seconds then switch on again. If this does not
clear the fault, please contact your dealer.
• The Remote Control disables the front panel controls.
The audio output is low or absent -
• Check that all cables are connected correctly and not damaged. Damaged
cables are a VERY common source of malfunctions!
• Check that the source and destination equipment are switched on and
correctly set up.
• Check that the unit is locked to the source you want to monitor.
• Ensure Mute is not enabled - LED off.
• Set the Volume control 0.0dB.
• Ensure the source is sending audio data.
The level trimmers on the rear panel do not change the output level
• Ensure the trim tool or flat-bladed screwdriver you are using is narrow
enough to reach the adjuster (about 2.5mm or 0.1” diameter) and long
enough (at least 12mm or 0.5”).
• The trimmer may be at the end of its travel - try turning it several times the
other way. It is a 20-turn device.
• The level trimmers do NOT affect the unbalanced outputs.
The Left and Right channels are swapped
• Check that Flip is Off.
• Check that the audio output cables are not reversed.
• Check that the channels are not swapped elsewhere in the system.
• In Dual AES mode (dCS 952 only), ensure that the AES1 input is connected
to the output on the source equipment for the Left channel data (probably
labelled AES 1, AES A or Left) and AES 2 input is connected to the output
on the source equipment for the Right channel data (probably labelled AES
2, AES B or Right). See the manual of the source equipment for information.
• In SDIF-2 mode, ensure the Ch1 and Ch2 inputs are connected correctly.
One output channel is low or absent -
• Check that all cables are connected correctly and not damaged. Damaged
cables are a VERY common source of malfunctions!
• Check that the balance is not offset elsewhere in the system.
• If the level trimmers on the rear panel have been adjusted, check that one
has not been set much lower than the other.
• In SDIF-2 mode, ensure both Ch1 and Ch2 inputs as well as the Word
Clock are connected correctly.
The output is monophonic -
• If the unit is locked to one wire of a Dual AES source, the left channel signal
will appear on both channels. Select the correct inputs.
• The source may actually be monophonic.
• Check that the signal is not mono’ed elsewhere in the system.