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dCS 954 User Manual Manual for Standard Software Version 1.5x
dCS Ltd June 2000
Manual part no: DOC136954 iss 2B1
Page 78
file 135954ma2b1.pdf available from website
Contact
dCS
on + 44 1799 531 999 email to: more@dcsltd.co.uk
(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. Turning DSD mode on and off occupies the
microcontroller for about 15 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 equipments 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.
• If the Ref In menu item is set to ddC, change it to Route. With PCM inputs,
DDC mode disables the analogue outputs.
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, ensure that the AES 1 (or AES 3) 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 (or AES 4) 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 Quad AES or 4-wire DSD modes, ensure that AES 1, 2, 3 & 4 inputs are
correctly connected to the corresponding outputs on the source equipment.
See the manual of the destination equipment for information.
• In SDIF or DSD modes, 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 or DSD modes, ensure both Ch1 and Ch2 inputs as well as the
Word Clock are connected correctly.