NAIM CD555, Owner'S Manual

E7

CDX2

8.2 CDX2 Connected to XPS Power Supply

Mains input 

and fuse

Note

: When used with an external power supply the CDX2 

player must be disconnected from the mains. Disconnect the 
player from the mains before connecting the power supply.

Cable
direction
marker

9 CDX2 In Use

9.1 Signal Output Selection

The CDX2 can provide either analogue or S/PDIF format digital 
signal output. The analogue output is carried by either a single 
DIN socket or a pair of RCA phono sockets. The digital output 
is carried by a single 75Ω BNC socket.

Digital and analogue outputs may not be used simultaneously. 
Selection is achieved by using the rear panel mounted switch. 
The CDX2 must be switched off before the output selection 
switch is operated. Ensure the correct cables are connected 
before switching the  
CDX2 back on.

Note:

 Your local retailer will be able to offer advice on digital 

output cables.

9.2 Disc Loading

To load a compact disc pull open the CD drawer using the 
handle on the left hand side of the player. Place the disc on 
the platter followed by the magnetic puck. Do not use a puck 
from any other Naim CD player. Different Naim CD players use 
dissimilar pucks.

Note:

 If an HDCD® encoded compact disc is loaded the CDX2 

will automatically recognise and decode it. The display will 
temporarily read HDCD after play is selected.

9.3 Power Supply Upgrade

The CDX2 can be upgraded by the addition of a CD 555PS, XPS 
or XP5 XS Power Supply. The external supply takes over from 
the internal power supply of the CDX2 and offers both a greater 
number of separate supplies and more sophisticated voltage 
regulation.

The external supply is connected to the CDX2 via a heavy duty 
“Burndy” cable. Switch off both the power supply and CDX2 
when making connections and remove the CDX2 mains cable. 
Remove the CDX2 link plug and connect the Burndy cable 
ensuring that the connectors are securely attached and their 
twist lock mechanisms are engaged. Switch on the power 
supply from its front panel power button. After a short while 
the CDX2 will function as normal.

9.4 Player Maintenance

It is important for reliable operation of the CDX2 to ensure that 
the surfaces of the transport platter and the underside of the 
puck are free of dust or debris which can prevent the disc from 
sitting properly and cause it to slip.

To clean the transport platter, take a piece of Blu-Tack and 
lightly apply it to the top surface of the magnetic metal hub, 
picking up any material attached to it. Brush the plastic outer 
edge lightly with your finger or a soft brush to ensure that it 
is dust and particle free. Similarly, clean the puck with Blu-
Tack, to remove debris from its underside. Do not, under any 
circumstances, use any solvents or fluids for the cleaning 
process.

Note:

 If a CD 555PS Power Supply is used to power a CDX2 

player use only power supply output Socket 1.

CD Burndy Cable