SoundCraft UREI 1603 - Manual (Page 12)

12
MAKING ADJUSTMENTS AND FITTING SPARES
CAUTION: THE FOLLOWING SECTION IS FOR USE BY QUALIFIED
SERVICE PERSONNEL ONLY. TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE THE TOP FASCIA OR THE FADER PANEL TO
PERFORM ANY SERVICING OR OTHER TASKS, UNLESS YOU ARE
QUALIFIED TO DO SO.
BEFORE REMOVING THE TOP FASCIA OR THE FADER PANEL ENSURE
THE UNIT IS DISCONNECTED FROM THE MAINS SUPPLY.
ONLY REMOVE THE ALLEN SCREWS INDICATED ON THE DIAGRAM OPPOSITE.
WARNING: DO NOT OVER-TIGHTEN THE SCREWS AFTERWARDS.
It is necessary to remove the top panel fascia in order to carry out one or more of the following tasks:
Setting the pre-trim pads during installation, and setting of the gain stages / output pads.
Adjusting the external mute mic level control
It is necessary to remove the fader panel only in order to replace any of the faders, including the cross-fader.
Removing The Top Panel Fascia
To remove the top panel fascia proceed as follows:
Pull off all the pot knobs.
Undo the 9 (for 1605) or 8 (for 1603) retaining Allen screws using a 2mm Allen key. The fascia can now be lifted clear of
the subframe underneath. Take care not to bend the panel.
The diagrams opposite show views of the 1605 mixer without top fascias fitted. The 1603 is similar but has fewer retaining screws.
Setting The Pre-trim Gain Stages
These pads are used to adjust the input level to individual channels, e.g. to reduce the input when using a piece of equipment with
a high output level.
There are 2 pads on each of the input channels. The +14dB gain stage switch is nearest to the faders, and the -10dB pad is nearest
to the rear panel. The switches are push-on push-off types. The pads are in-circuit when the switches are depressed.
If both switches are inadvertently depressed the -10dB pad is selected. The +14dB selection is designed to boost the signal from
low level portable devices such as mp3 players.
Setting The Master Output Pads
There are two pads on the master outputs, -10dB and -20dB. Depress the -10dB to select the -10dB pad, depress both switches to
select the-20dB pad: if only the -20dB switch is depressed no pad will be selected.
Adjusting The External Mute Mic Level Control
If the external mute facility is going to be used, the installation engineer can check and adjust the level at which the DJ channel 1 mic
signal will appear at the master outputs. To simulate an external mute condition depress the mute test button. The main output will
then only be the output from DJ channel 1. Under the external mute condition its level at the output is unaffected by any mixer control
except for the preset ext mute mic level pot. When the pot is fully anti-clockwise the mute the signal.
Removing The Fader Panel
To remove the top panel fascia proceed as follows:
Pull off the cross-fader knob only (the channel faders are attached to the panel and will lift away with it).